• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1481946 Debranching apparatus DEERE & CO 20 April 1976 [21 April 1975] 15881/76 Heading B5L A tree harvesting machine comprises a mobile base carrying a delimber assembly 30, a feed unit 40 for pulling a tree through the delimber assembly and a boom assembly 46 for handling a tree and presenting it to the delimber assembly and feed unit, the delimber assembly having open and closed states controlled by a delimber actuator, for respectively receiving a tree and encircling the tree so as to effect delimbing thereof as it is pulled through the delimber assembly, the feed unit having open and closed states, controlled by a feed unit actuator, for respectively receiving a tree and engaging the tree for pulling it through the delimber assembly when drive is imparted to the feed unit, and a control system responsive to a start signal to provide a sequence of control signals with predetermined delays therebetween and to apply these signals to the said actuators and the feed unit to initiate the closed states of the delimber assembly and feed unit and drive of the feed unit, the control system being responsive to a reset signal to initiate the open states of the delimber assembly and feed unit and terminate the drive of the feed unit. The control system may be switched to manual control and in the automatic mode may be switched so that the feed rolls 42 close first i.e. before the jaws 34 of the delimber, or vice versa. The use of an automatic control system is stated to allow the felling of a further tree by means of the felling device 48 while the previously felled tree is in process of being debranched, thus improving the cost effectiveness of the machine.
    公开号:SU1186072A3
    申请号:SU762352451
    申请日:1976-04-21
    公开日:1985-10-15
    发明作者:Фарлей Пенфолд Гарн；Пол Редман Эндрю
    申请人:Диир Энд Компани (Фирма)；
    IPC主号:
    专利说明:

    and rollers to the initial state, another input of which is electrically connected with the GPI elements at the other inputs of the triggers, and the output is connected to one of the inputs of the trigger Trigger signal and through the elements of the S1I connected to the input of the time delay element of the trigger signal reset, to other inputs of knives and rollers triggering and rotation of the latter, the trigger triggers are connected to one of the inputs of the OR elements electrically connected with master devices whose other inputs are electrically connected A manual control circuit, the FLITII element electrically connected to the driver of the drive, is connected to the latter through the time delay element ipHBo; ja rotation, the rotation of the knives and rollers and the rotation of the latter are connected to - one of the inputs of the trigger trigger trigger signal, the output of the roller dilution trigger to one of the inputs of the trigger return signal generation circuit, and the other inputs of the shaping circuit are connected to the manual control circuit i to the cat connected swarm setting unit Raversi rollers output element triggers time delay reset signal state is connected to another input of the start signal generating circuit and thereby triggers. the OR elements with other inputs of knife and roller breeding triggers, and solenoids are electrically connected to the outputs of the set points.
    The invention relates to the field of forestry and can be used for each branch and for removing i-i branches from them.
    The closest to the technical essence of this is the Interview - and the timber processing machine, which contains Samokho, 1, the chassis, the device for gripping the tree insert, the device for cutting branches in the form of knives, the device for clamping and pulling the tree trunk, and The device for pruning and the fjfifi device for clamping and pulling the tree trunk is designed to be folded and hydraulically driven. solenoids connected to a control circuit connected to a power source and comprising a manual control circuit and an automatic control circuit with a start switch, which are interconnected by means of the mode selector switch ij.
    A disadvantage of the known machine is low reliability due to the presence of limit and stop switches and connecting wires between the switches and the control circuit; as well as low productivity due to intermediate inclusions of feeding operations, as well as work on / rigid, predetermined program, which does not allow to choose the order of switching on the drives of the device for clamping and the device for pruning branches depending on different branches of branches.
    The purpose of the invention is to increase the reliability and performance of the machine.
    The goal is achieved by the fact that in a mobile woodworking machine with a self-propelled chassis, a device is installed for gripping and inserting koml of a tree, a device for pruning knives, a device for clamping and pulling a tree trunk, and a device for pruning and the device for clamping and pulling the tree trunk is arranged to be mixed and diluted by means of a hydraulic drive with solenoids included in the control circuit connected to the power source. , and including a manual control circuit and an automatic control circuit with a start switch, which are interconnected by means of an operation mode switch, the device for clamping and pulling the tree trunk is made in the form of rotation and reverse drives, and the control circuit is inserted; drives and logic block including control information, and breeding knives and rollers and rotating the last elements OR, elements AND, triggers of mixing and breeding knives and rollers and the latter, the OR elements connected to the drivers for reducing and diluting the knives and rollers and rotating the latter, the driver for reversing the rollers, the trigger time trigger trigger and the return signal of the three heats to the initial state, the timing element of the drive start signal rotation and schemes of forming start-up trigger signals and resetting of triggers to the initial state, output of the start-up signal formation circuit through the time delay element of the start-up trigger signal of knives and rollers and They are connected to the outputs of the AND elements, connected to one of the inputs of the corresponding triggers, directly to one of the inputs of the circuit for generating the return signal of the triggers to the initial position, and to one of the inputs of the AND elements, the other inputs of which are connected to the switch selection of the turn-on sequence of the drives electrically connected with the element of the time delay of the trigger triggering signal, and the output of the circuit for generating the signal of the return of the triggers to the initial state is connected to one of the inputs This time delay of the trigger start signal and the time delay element of the return signal of the knife and roller breeding trigger trigger, the other input of which is electrically connected with the OR elements on the other trigger inputs, and the output connected to one of the inputs of the trigger trigger generation signal and . Through the OR elements associated with the input of the element of the time delay of the return signal of the triggers to the initial state, to the other inputs of the triggers of reducing the knives and rollers and rotation of the latter, the outputs of the triggers are connected to one from the inputs of the lighters that are electrically connected to the master devices, the other bytes of which are electrically connected to the manual control circuit, the OR element electrically connected to the master drive device of the rotation drive, connected to the latter through the time trigger signal of the rotational drive start, the trigger outputs data of knives and rollers and rotation of the latter are connected to one of the inputs of the trigger trigger generation signal, you (the stroke of the roll dilution trigger - to one of the inputs of the triggers to the true state, and other inputs of the formation circuits are connected to the manual control circuit, to which the roller reversing driver is connected, the output of the reset trigger time signal element is connected to another input of the trigger trigger signal formation circuit and NL is with other inputs of knife and roller dilution triggers, and solenoids are electrically connected to the outputs of the drivers. FIG. 1 shows a three-dimensional image of the proposed machine; in fig. 2 - control circuit. The machine contains a self-propelled chassis, the rest of the front 1 and rear 2 am, connected to each other with the possibility of turning about the vertical axis 3, shown partially in FIG. 1. The front and rear rails are supported by wheels 4 and 5. At the end of the front frame 1 there is attached a device for trimming branches 6 in the form of a V-shaped stationary foot 7 and two movable knives 8. The device for clamping and pulling the tree shaft is made in the form of shaft 9 with drives rotation and reversing communicating with spools 10, 11, named respectively, solenoids 12, 13, pump 14 and reservoir 15, clutch actuator 16 connected with clutch 17, gear 18, actuator 19 and engine 20, Rollers are equipped with spikes (not shown) for rigid interaction with a tree trunk, as well as a hydraulic drive for mixing and dilution, including a spool 21 with solenoids 22, 23, connected to a pump 14, a reservoir 15 and a hydraulic rod 24 with an actuator 25. The device for pruning is also hydraulic an actuator for reducing and, diluting the blades, including a spool 26 with solenoids 27, 28, connected to a pump 14, a reservoir 15 and a hydraulic cylinder 29 with a lever mechanism 30.
    Solenoids 12, 13, 22, 23, 27, 28 are included in the control circuit (see FIG. 2) connected to the power source 31, the control circuit includes a manual control circuit 32, an automatic control circuit 33 with a start switch 34, and circuit 32 and 33 are connected between the saboi and the switch of operating modes 35, logic unit 36, power circuit 37 and actuating circuit 38, which includes these hydraulic drives, Logic unit 36 includes control of the knives 8 and rollers 9 respectively the elements of the LC 39 42J knife breeding managers the rollers, respectively, the elements OR 43 and 44, the elements OR 45 - 48, connected respectively to the master setting device 50 of the rolls, the master device 51 of the knife, the master driver of the roller 50, the driver of the roller 53 and the rotating device 54 of the roller OR 49 connected to the driver 54 via an element of the time lag 55 of the drive of the rotational drive of the rollers.
    Block 36 also includes a driver for reversing rollers 56, controlling the mixing of knives and rollers, respectively, elements 57 and 58, knife closing trigger 59, knife breeding trigger 60, roller driving trigger 61 and their rotation, roller driving trigger 62, timing element 63 the trigger signal of triggering the knives 5 and the rollers and the rotation of the latter, the element of time 64 of the return signal of the triggers of breeding the blades and rollers to the initial state, the element OR 65, through which outputs
    0 flip-flops 59 and 61 are connected to one of the inputs of the trigger trigger generation signal, including the OR 66 element, connected to the trigger input 67 and the AND 68 element,
    5 connected to the trigger output 67, the circuit for generating the return signal of the flip-flops to the initial state, including the RSHI element 69, connected to the trigger output 70 and the AND element 71, connected to the trigger output 70, the OR element is connected to one of the inputs of the time-delay element 63 72.
    Automatic control circuit 33
    5, in addition to the trigger switch 34, switches on the normally open switches 73, 74 and the light indicator frame 75. Manual control circuit 32
    0 turns on the switch for selecting the sequence of switching on the drives 76, the storage switch 77, the output of which is connected to the voltage regulator 78, the switch of the knives
     79, the switch of the feed rollers 80, the switch 81 of the rotational drives and the reverse of the rollers. The power circuit 37 contains a fuse switch 82 connected through and
    Q support 83 switch. Hold 84 ,. also connected to the circuit breaker 73 of the automatic control circuit, in-. the rotor 85, connected to the last and through the element AND 86 to the element OR 87, holding the solenoid 88 and the pulse timer 89,
    The output of the element 68 of the starting signal shaping circuit through the element of time delay 63 and, accordingly, the elements OR 39, 41 connected to the outputs of the elements 57 and 58 is connected to one of the inputs of the flip-flops 59, 61 directly to one of the inputs of the element 69 69 the return signal shaping circuit and one of the INPUTS of the AND 57, 58j elements, the other inputs of which are connected to an actuator 76 selection switch, electrically connected to the time amplifier element 63, and the element output And 71 of the return signal generating circuit li ne of the inputs to one vscherzhki time elements 63, 64, the other input element vscherzh time ki 64 is electrically connected. with elements OR 44, 42, 43, 40. The outputs of the flip-flops 59 to 62 are connected to one of the inputs of the elements OR 45 49 electrically connected respectively to the driver devices 50 to 54, the other inputs of which are electrically connected to the manual control circuit 32, to which the driver of the reversing roller 56 is also connected, as well as other inputs of the elements OR 66 and 69 of the signal generation circuit. The output of the trigger 62 is connected to one of. the trigger inputs 70 of the gate signal formation circuit. The output of the time latch 64 is connected to another input of the OR element 66 of the start signal generation circuit and through the elements OR 44, 43 to the other inputs of the flip-flops 60 and 62. The solenoids 12, 13, 22, 23, 27, 28 are electrically connected to the outputs, respectively. 50 - 54, 56. The machine operates as follows: The operator turns on the ignition switch 82, connects the electrical power source 31 to the operating mode switch 35. When the automatic control of the branch removal switch is performed, the operator switches the mode switch 35 and in the middle position Vzhlyucheno: Auto position, following which Corollary power source 31 is connected to zapominayupschm switch 77 and the trigger 34. In the initial start-up switch 34 is closed in the installation position. The installation signal goes to the element OR 87, which supplies power to the holding Solenoid 88 for a time sufficient to close the switch 84, resulting in an input signal to the And 86 element, from the output: yes, if there is also an inverter signal at the input 85 and the presence of a signal from the switch 73, the signal is fed to the input element OR. 87, which locks the position of the closed holding switch 84. Next, the setup signal turns on the memory switch 77, connects the power source 31 to the voltage regulator 78, and then to the logic unit 36. The memory switch 77 memorizes the pulse signal and responds to the opening of the operating mode switch 35 from Automatic or opening, the ignition switch 82, from the key the power source 31 from the logic unit 36. At the same time, the installation signal is fed to the inputs of the elements OR 40, 43, 42, 44, from the outputs of which Loose signals arrive at the inputs of the flip-flops 59, 60, 61, 62 ,. setting their outputs Q to O. The installation signal goes to the inputs of the elements OR 66, 69 of the formation circuit for starting and returning triggers to the initial state, from the output of which goes to triggers 67, 70, as a result of which signals appear at their outputs Q that arrive at the inputs of the elements And b8, 71 of the formation schemes. Next, the signal arrives at the input of the OR element 72, the output signal of which sets the initial elements of the delay of the start and return signals 63, 64 to initial state. When the power circuit 37 and logic unit 36 are reset, the operator sets the machine between the trees and adjusts the articulated chassis, closes the switch 74, which turns on the frame alignment indicator light 75 and connects the power source 31 to the element-g input. mA 68. Then, the operator selects a suitable tree and, depending on the distance from the branches of the tree, the branches are set, sets the selection switch for actuating the drives 76 to the position for reducing the knives and rollers. For example, if the branches are located close to the butt, then it is desirable to reduce the knives 8 before converting the feed rollers 9, if the branches are located a small distance from the butt, then it is desirable to first reduce the rollers 9 and then the knives 8. If the rollers are to be reduced first, then the selector switch the sequence of switching on the drives 76 will connect the power source 31 to the input of the element 57, if the rollers 9 must first be brought together, then the power source 31 will be connected to the input of the element 58. To activate the control circuit in automatic mode From this, the operator sets the start switch 34 to the Start position, giving a signal through the And 68 element, and includes a time delay element 63 of this signal, which is about; clearly after 1.1 s. outputs an output pulse. The output signal of the element And 68, in addition, is fed to the input of the element OR 69, transferring the trigger 70 to the initial state, which provides an input signal to the element And 71. The output signal of the element And 68 also goes to the input of the elements And 57, 58. If it is necessary to close the initial knives of the device for cutting branches, the switch 76 is set to the position in which the power source is connected to the element And 57 When the input element of the element And 57 is present, the switch 76 and the element 76 and the first element 68 which enters the input element OR 39, the signal from which is fed to the input 5 of the knob trigger setup 59, the output Q of which is the output signal that arrives at the input of the element OR 45, the signal from which includes the specifying knife knob that supplies power to the solenoid 27 which sets the spool 26 to connect the pump 14 and the tank 15 to the hydraulic cylinder 29, the actuator 30 of which drives the blades 8, the output signal of the trigger 59, 45
    in addition, it enters the input of the element OR 65, as a result of which the signal from the output Q of the flip-flop 67 to the input of the element 68 is stopped, which prevents the subsequent activation of the control circuit of the additional impulse start signals ,.
    The output signal of the time lump 63 after 1.1 s: since the moment when the output signal from the element AND 68 is received, enters the input of the element OR 41, the code
    . after.time delay as indicated.
    Setting switch 76 to prime position
    The rollers also provide a signal to the start time signal element 63 to change the duration of the time delay. After a specified delay
    2.2 seconds sufficient to reduce the rollers and engage the clutch 17, the time lag element of the signal 63 outputs a signal to the input of the OR element 39, the signal of which is fed to the input of the setting of the roll down trigger 61, which outputs the signal fi (input the element OR A7, the output of which includes the roller setting device 52, which sets the spool 21 to the position of connection of the pump 14 and the tank 15 to the hydraulic cylinder 24, the lever mechanism of which reduces the feed rollers.The data output trigger of the rollers 61, cr In addition, the input element OR 49, the signal from which is fed to the time-delay element of the rotational drive start signal 55, whose output signal after a predetermined delay, 1.1 s enters the input of the driver of the rotation of the rollers 54, which includes through the solenoid 12 the clutch 17 , and the motor 0 begins to rotate the rollers 9. When the rollers first come together, the turn-on switch for actuators 76 connects the power supply to element 58, which, in the presence of signals from switch 76 and element 68 enters the signal to the input of the element OR 41, the output of which is fed to the input 5 of the roll down trigger and the rotation of the last 61 in state 1, the output of which is a signal arriving at the input of the OR block 47, the output of which includes the roll down setting device 52, applying power to the solenoid 22, ensuring that the feeding rollers are knocked down, as indicated. The output signal of the trigger of rollers 61, in addition, provides the output signal on the output O of the trigger 67 and includes a clutch 17 11 that is fed to the input s of the trigger of the reduction of the knives 59, the output signal from which is fed to the input of the trigger 67 and closes the knives 8 ka indicated. After the trunk of the tree went through the devices for clamping and pulling the trunk and cutting the branches and was completely cleared of branches, it falls on the ground. The operator then prepares to process the next tree, which is selected and cut during the branching cycle, by setting the switch to the position Return to the initial state, thereby giving a return signal; the initial state on the element 71. Since the set and start signals determine the presence of a signal at the output Q of the flip-flop 70, then the element 71 produces a signal at the input of the element OR 72, which sends a signal to the input of the installation at the element . With the output element And 71 signal. enters the inputs of the elements OR 40, 42, which impart a signal to the outputs of the installation in O of the triggering rollers and knives 59, 61 and nullify their outputs. In addition, the signal from AND 71 enters the inputs of the knife breeding triggers and rollers 60, 62. The knife breeding trigger 60 transmits a signal to the element OR 46, which includes the driver of the knife 51, energizing the solenoid 28, which through the spool 26 acts on the hydraulic cylinder 29, which spreads the knives 8. At the same time, the trigger of the dilation of the rollers 62 produces a signal to the element OR 48, which includes the driver of the dilution of the rollers 53, co. The second supplies power to the solenoid 2 which, through the spool 21, acts on the hydraulic cylinder 24 driving rollers 9. The signal from the output of the trigger 62 enters the input of the trigger 70, at the output Q of which the condition O appears, as a result the signal to one of the inputs of the element is And 71, and the subsequent inclusion of additional return signals into the original 2 state is prevented until a start signal is received. . The output signal of the element 71 is inputted to the installation of the time element of the return signal of the flip-flop trigger 64, which outputs an output signal with a delay of 1.1 s, which returns the time-delay element of the start signal 63 to the initial state. 60 and 62. In the automatic mode, there are two main ways to stop the branching cycle. The first is the instantaneous switching of the start switch 34 to the Installation position, as a result, a reset signal is automatically given to the flip-flops 59-62, as a result their outputs are nullified, the power supply to the solenoids 12, 13, 22, 23, 27 stops , 28, the spools 26, 21, 10, 11 are returned to the position in which their bore holes are closed or connected to the reservoir. The second method consists in instantaneous setting of the switch 73 to the Stop position, as a result of which the source 31 is connected to the inverter 85, which turns off the And 86 element, cutting off the power supply to the holding solenoid 88 and opening the switch 84, turning off the control circuit. To manually control the operation of the rollers and knives, the operator sets the mode switch 35 to the Manual position, the latter connecting the power source 31 to the timer 89, which outputs a pulse signal to the input of the OR element 87, from which power is supplied to the holding solenoid 88 and closed is kept in a closed state for a time sufficient for the time from the power source 31 through the element AND 86 and the element OR 87 power is supplied to the holding solenoid 88. Such a device allows you to turn off the power e from the executive circuit 38 by setting switch 73 to the Stop position even when working in the manual mode. In manual mode, the switch 35, in addition, connects the power source 31 to the switch 8 of the rotary drives and the reverse of the rollers. By selectively closing the switches 80, 79, the operator can individually reduce and spread the knives and rollers. By setting the switch 18 to the drive on position, the operator connects the input of the element OR 49 to the power source 31. The output signal of the element OR 49 is fed to the element of time 55, turning on the clutch 17 after a delay of 1.1s.
    By setting the switch 81 to the reverse of the drive, the operator connects the power source 31 to the input of the element OR 49 with the driver for the reverse of the rollers 56, which through the solenoid 13 and the spool 11 connects the actuator 19 with the pump and the mechanism 19 rotates the rollers in the opposite direction, pushing the tree trunk in the direction of the front end of the machine.
    The proposed machine allows to increase reliability and productivity due to the operative selection of operating modes.
    H.R ::
    .55i gr
    five
    h
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    W
     I
    .
    权利要求:
    Claims (1)
    [1]
    A MOBILE FOREST PROCESSING MACHINE containing a self-propelled chassis — on which a device for gripping and nesting a tree lodge, a device for trimming knots in the form of knives, a device for clamping and pulling a tree trunk, and a device for trimming knots and a device for clamping and dragging a tree trunk are mounted the possibility of their information and dilution by means of a hydraulic drive with solenoids included in the control circuit connected to an electric energy source and including a manual control circuit control and circuit (automatic control with a start switch, which are interconnected using a mode switch, characterized in that, in order to increase the reliability and performance of the machine, the device for clamping and dragging the tree trunk is made in the form of rollers with rotational and reverse drives and in the control circuit, a switch for selecting the sequence of turning on the drives and a logic block is introduced, including control knives and rollers for mixing and raising and rotation of the last elements OR, AND elements, t trigger knives and rollers mixing and rolling and rotation of the latter, OR elements connected to the master knives and rollers mixing and rolling and rotation of the latter, the roller reversal driver, delay elements of the trigger start signal and the trigger return signal to the initial state, shutter element · time of the start signal of the rotation drive and the trigger generation signal generation circuit and the triggers return to its initial state, the output of the start signal generation circuit through the signal time delay element Launching triggers to reduce knives and rollers and rotate the latter and OR elements connected to the outputs of AND elements. Connected to one of the inputs of the corresponding triggers, directly to one of the inputs of the signal generation circuit of the triggers to the initial state and to one of the inputs of AND elements, other inputs of which are connected to the switch for selecting the sequence of turning on the drives, electrically connected to the delay element of the start signal, triggers, and the output of the circuit for generating the return signal of tripers to the original the state is connected to one of the inputs of the time delay element of the trigger start signal and the time delay element of the return of the knives and rollers withdrawal triggers to the initial state, the other input of which is electrically connected to the OR elements on the other inputs of the triggers, and the output is connected to one of the inputs of the signal conditioning circuit trigger triggering and through OR elements associated with the input of the time delay element of the trigger return signal to its original state, to other inputs of the triggers to reduce knives and rollers and rotate First, the trigger outputs are connected to one of the inputs of the OR elements electrically connected to the driver, the other inputs of which are electrically connected to the Manual control circuit, the OR element electrically connected to the driver of the rotation drive connected to the latter through the delay element of the drive start signal rotations, the outputs of the triggers for converting knives and rollers and the rotations of the latter are connected to one of the inputs of the formation circuit; generation of a trigger start signal, the output of the roll dilution trigger to one from the inputs of the formation circuit of the trigger return signal to the initial state, and the other inputs of the formation circuits are connected by a manual control circuit · to which the roll reversing driver is connected, the output of the delay element of the trigger return signal is connected to the other input of the trigger triggering signal generation circuit and through. elements OR with. other inputs of knives and rollers breeding triggers, and solenoids are electrically connected to the outputs of the master devices.
    类似技术:
    公开号 | 公开日 | 专利标题
    US3991799A|1976-11-16|Apparatus and method of felling and bunching trees
    US3590760A|1971-07-06|Timber-harvesting machine and method
    SU1186072A3|1985-10-15|Movable tree transplanting,uprooting and felling machine
    DE1438914A1|1969-03-20|Arbitrary control for a powered device
    CA1142064A|1983-03-01|Method for cutting and splitting tree trunks, and anapparatus for implementing the method
    US3805858A|1974-04-23|Apparatus and method for delimbing felled trees
    US4313479A|1982-02-02|Draw shear
    US6578610B2|2003-06-17|Automatic feller/buncher clamp control
    US3493020A|1970-02-03|Shear type tree cutting device
    US3576202A|1971-04-27|Tree-harvesting apparatus
    US3805859A|1974-04-23|Delimbing assembly for a tree harvester
    US3532141A|1970-10-06|Tree harvesting and processing devices
    DE3536459A1|1986-05-15|Process and machine for mechanically thinning out thin timber stands
    US2949083A|1960-08-16|Sod plug planter
    CA2057680A1|1993-06-17|Felling and delimbing apparatus allowing to delimb trees in length, and its method of use
    GB1583243A|1981-01-21|Stake or log splitting devices
    DE1923162A1|1969-11-20|Mobile tree processor
    SU1430274A1|1988-10-15|Lopping and cross-cutting machine
    SU127105A1|1959-11-30|Self-propelled or trailed tracked vehicle
    US4407343A|1983-10-04|Tree feller with gravitational buncher
    US2643690A|1953-06-30|Pocket routing machine
    SU619339A1|1978-08-15|Branch-cutting head
    RU2486U1|1996-08-16|MOTOR BUTTER CUTTER
    SU1033072A1|1983-08-07|Forest extraction machine
    US4399848A|1983-08-23|Tree cutting mechanism
    同族专利:
    公开号 | 公开日
    NO140544B|1979-06-18|
    DE2615233A1|1976-11-04|
    IT1061223B|1983-02-28|
    GB1481946A|1977-08-03|
    US3938566A|1976-02-17|
    FR2308303A1|1976-11-19|
    FI59906C|1981-11-10|
    CA1027212A|1978-02-28|
    SE7604605L|1977-01-14|
    FI761046A|1976-10-22|
    NO140544C|1979-09-26|
    DE2615233C2|1982-07-08|
    AU1155676A|1977-09-08|
    FR2308303B1|1978-10-13|
    NO761221L|1976-10-22|
    SE433793B|1984-06-18|
    FI59906B|1981-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3642041A|1967-05-12|1972-02-15|Canadian Internationl Paper Co|Mobile tree-processing machine|
    US3590760A|1968-07-22|1971-07-06|Timberjack Machines Ltd|Timber-harvesting machine and method|
    US3731719A|1971-04-26|1973-05-08|Deere & Co|Delimbing machine controls|
    US3833034A|1973-03-19|1974-09-03|Deere & Co|Tree harvester|FR2625460B1|1987-12-31|1992-02-21|Armef|WORKING HEAD FOR TREE SHAPING MACHINE|
    FI106239B|1998-02-06|2000-12-29|Outokummun Metalli Oy|Coupling the control function in a multi-treatment arrangement|
    SE517563C2|2000-09-22|2002-06-18|Sp Maskiner I Ljungby Ab|Ways of regulating compressive force in a twig knife unit in a single-crop harvester assembly|
    US6962178B2|2003-05-29|2005-11-08|Alain Duval|Tree processor|
    WO2013016607A1|2011-07-27|2013-01-31|Michael Boyd Morey|Waste processing machine, vigilance control system, timer, and methods therefor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/570,203|US3938566A|1975-04-21|1975-04-21|Tree harvester delimbing control|
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