• 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:
    A cutting device for a pile which can be connected to a work machine, comprising a cutting unit (1) with a frame (2), and a rotatable blade (8) for sawing off the pile. The cutting unit (1) has a pivot shaft (11) on which the blade (8) is fastened by means of a fastening arrangement (16), and pivoting means (12) for rotating the pivot shaft (11), which pivot shaft (11) is arranged at a distance from the axis of rotation (9) of the blade (8).
    公开号:FI20195388A1
    申请号:FI20195388
    申请日:2019-05-10
    公开日:2020-11-11
    发明作者:Teemu Häkkinen
    申请人:Haekkinen Teemu；
    IPC主号:
    专利说明:

    The invention relates to a pile cutting device which can be connected to a working machine. By means of piling, loads from foundations and / or structures above the foundation are transferred to the load-bearing soil or rock. Piling makes it possible to set up different structures when the base soil is too weak in load-bearing capacity. Today, the most common types of piles are reinforced concrete piles and steel pipe piles. Piling takes place with piling machines, in which case the end of the pile is struck with a - largest object. As a result of the impact applied to the end of the pile, the tip of the pile sinks into the ground. Piling is continued until a load-bearing base, such as bedrock, is reached. After piling, the parts of the reinforced concrete piles above the ground surface are cut to the desired length. Usually, the pile is cut by sawing the end steels in the corners of the pile and part of the concrete across the desired height, after which the part to be cut is removed by striking the wedge into the sawn joint. Pile sawing is performed manually with an angle grinder and a diamond blade. The detachable part of the pile must be supported with an excavator during sawing to prevent accidents due to premature pile breakage. As manual sawing and cutting is a physically very heavy job, pile cutting devices to be connected to the machine have been developed in which the pile is cut. These have the disadvantage of the complexity of the structure and the linear movement of the sawing means, such as the diamond blade, during sawing, which may cause the sawing device to bounce and thus impair the durability of the sawing means and the sawing pattern.
    E O 30 It is an object of the present invention to provide an improved pile cutting device.
    The objects of the invention are achieved by a pile cutting device according to claim 1. The pile cutting device according to the invention comprises a frame, and a rotatable blade for sawing the pile. In addition, the cutting device comprises a rotating shaft to which the blade is fixed by means of a fastening arrangement and rotating means for rotating the rotating shaft. The axis of rotation is arranged at a distance from the axis of rotation of the blade. The solution according to the invention achieves considerable advantages. Compared to manual cutting, with the cutting device according to the invention, the pile can be cut faster and with less physical load. The rotation of the blade of the pile cutting device according to the invention about the axis of rotation during sawing reduces the bounce of the saw blade and improves the sawing result and the durability of the blade. The cutting device of the invention can also be made compact and simple in construction, which makes the cutting device easy to move and secure.
    The invention will now be described in more detail by way of example with reference to the accompanying drawings, in which Figure 1 shows a front view of a pile cutting device according to one embodiment of the invention, Figure 2 shows the cutting device of Figure 1 without front support, Figure 5 shows the cutting device of Figure 1 Fig. 4 shows a bottom view of the cutting device of Fig. 1 without a base plate. = N The pile cutting device according to the drawings is used for cutting piles, especially 3 reinforced concrete piles. Reinforced concrete pile with a square or 2 30 - rectangular cross - section. The side length of a reinforced concrete pile is typically 20-45 cm. Reinforced concrete piles are mainly concrete, but there are longitudinal end steels in the corners of the pile. The pile to be cut is mounted on the ground in such a way that
    that the end of the pile is above the ground. After installation, the above-ground part of the pile is cut to the desired length. The cutting device can be connected to an implement, such as an excavator, tractor or crane.
    The cutting device comprises a cutting unit 1 comprising a body 2 with connecting means for connecting the cutting device to the working machine. The connecting means comprise connectors (not shown) for supplying a working medium, for example hydraulic fluid, to the cutting device 1. The connecting means also comprise a fastener (not shown) for attaching the cutting device to a working machine, for example a working machine boom. The fastener is on the top plate of the cutting unit 1. The cutting unit 1 comprises gripping means 3 for gripping the pile. The gripping means 3 can be fitted on opposite sides of the pile to be cut. The gripping means 3 comprise two opposite gripping parts 4, 5, for example a gripping groove. The first gripping part 4 is fixedly mounted on the frame 2. The second gripping part 5 is movable towards the first gripping part 4 and away from the first gripping part 4. The gripping parts 4, 5 can be placed, for example, against opposite sides of the pile. The second gripping part 5 can be curved, so that it can be placed against the corner of the pile which is closest to the tip of the second gripping part 5. The second gripping part 5 is bearing-mounted to the body 2. In addition, the cutting unit 1 comprises an actuator 6 for moving the second gripping part 5. The actuator 6 is, for example, a hydraulic cylinder, one end of which is attached to the body 2 and the other end to the other gripping part 5. 2 dS 25 The body2 comprises a front support 7, for example a front plate. The front support 7 is between the first = gripping part 4 and the second gripping part 5. The pile to be cut is against the front support 7> during cutting. The front surface of the front support 7 can be fitted against the pile to be cut so that the pile is between the first gripping part 4 and the second gripping part 5. One corner of the pile can be adjusted to the angle between the front support 7 and the first gripping part 4. The second corner of the pile can be adjusted to the angle between the front support NN 7 and the second gripping part 5.
    The cutting unit 1 comprises a blade 8 for sawing a pile. The blade 8 is a rotatable circular blade, for example a diamond blade. The blade 8 is rotatable about an axis of rotation 9. The cutting unit 1 also comprises a motor 10, for example a hydraulic motor, for rotating the blade 8. The hydraulic motor 10 is of the so-called type. a gear motor that utilizes the volume between the teeth of two opposing gears, the magnitude of which varies as the gears rotate. With a gear motor, a sufficiently high rotational speed of the blade 8 can be achieved, and it is not necessary to increase the rotational speed by means of a gear or other arrangement. The motor 10 is mounted on a shaft on which the blade 8 is rotated. The cutting unit 1 comprises only one blade 8. The cutting unit 1 also comprises a rotating shaft 11 to which the blade 8 is fixed by means of a fastening arrangement 16. In addition, the cutting unit 1 comprises rotating means 12 for rotating the rotary shaft 11. The fastening arrangement 16 is arranged to rotate - at an angle corresponding to the axis of rotation 11. The fastening arrangement 16 is, for example, a connecting piece attached to the axis of rotation 11, for example a connecting arm. The connecting piece is attached, for example, to the motor 10 rotating the blade 8 or to the bracket of the motor 10, or the shaft rotating the blade 8 is mounted on the connecting piece. - The rotary shaft 11 is arranged on the rear surface side of the front support 7. The pile to be cut and the axis of rotation 11 are on opposite sides of the front support 7 during operation of the cutting unit 1. The axis of rotation 11 is arranged at a distance from the axis of rotation of the blade
    9. The axis of rotation 11 is arranged at a distance from the axis of rotation 9 in the radial direction of the axis of rotation. The distance between the axis of rotation 11 and the axis of rotation 9 is typically at least 10 cm. The axis of rotation 9 and the axis of rotation 11 are parallel. The distance between the axis of rotation 11 and the axis of rotation 9 depends on> mm. the width of the pile to be cut, the diameter of the blade 8 and the distance between the rear surface 7 of the front support 7 of the axis of rotation 11 and E. The rotary shaft 11 is fixedly mounted on the frame 2, for example on brackets on the rear surface of the front support 7. In this case, the movement of the axis of rotation 11 in the linear direction with respect to the body 2 is prevented. The rotary shaft 11 is located in the transverse direction between the first gripping part 5 and the second gripping part 6, typically in the middle of the distance between the first gripping part 5 and the second gripping part 6.
    The rotating means 12 for rotating the axis of rotation 11 comprise, for example, a rack 14 and an actuator 18 for moving the rack 14 longitudinally, e.g. to the body 2. The arm of the hydraulic cylinder 18 can be attached to the body 2 and the cylinder part to the rack 14. In this case, the cylinder part can be between the guide 15 and the rear surface of the rack 14. In this case, the guide 15 is shaped so as to support the cylinder part against the rack 14.
    In addition, the rotating means 12 comprise a gear 17 cooperating with the rack 14 and connected to the rotary shaft 11. When the rack 14 is moved longitudinally, the gear 17 and the rotary shaft 11 rotate.
    The axis of rotation 11 is arranged to rotate at least 180 degrees, typically at least 200 degrees. The rotational movement of the rotary shaft 11 is limited by the rear surface of the front plate 7, on which some part rotating with the rotary shaft 11, for example the bracket or spacer 16 of the motor 10, hits the end of the rotational movement and stops the rotational movement in both extreme positions. The distance of the axis of rotation 11 from the front support 6 and the distance between the axis of rotation 11 and the axis of rotation 9 are chosen so that the rotational movement of the axis of rotation 11 stops when the blade 8 is at the desired, optimal depth in the pile. In both extreme positions and = between the extreme positions of rotation of the rotary shaft 11, the axis of rotation 9 of the blade is behind the front support 7, i.e. the N 25 pile to be cut and the axis of rotation 9 are on opposite sides of the front support 7. In the first extreme position of rotation = the blade 8 is in the transverse direction between the axis of rotation 11 and> the first gripping part 4. In the second extreme position of the rotational movement, the blade E 8 is in the transverse direction between the axis of rotation 11 and the second gripping part 5. In the cutting unit 1 according to the drawings 8, sawing is performed without the linear movement of the blade 8 3 30. During the sawing of the pile, the blade 8 is only rotated about the axis of rotation NN 9 and the axis of rotation 11 is rotated, whereby the blade 8 rotates about the axis of rotation 11. Thus, the sawing movement of the blade 8 is achieved only by the rotational movement of the blade about the axis of rotation 9 and by the rotational movement of the axis of rotation 11.
    The pile cutting unit 1 also comprises means for supplying coolant to the blade 8, for example a hose (not shown in the figures). A constriction element is removably attached to the first gripping part 4, by means of which the center of the pile between the gripping grooves 4, 5 - can be centered transversely to the axis of rotation 11.
    The taper element can be removed from the first gripping part 4 or replaced with a narrower one if the pile to be cut is wide.
    If the pile to be cut is narrower, a wider cutting element can be attached to the first gripping part 4.
    When the center of the pile is at the axis of rotation 11, the end steels in the corners in the vicinity of the gripping parts 4, 5 can be cut and the pile can be sawn evenly with the blade 8.
    The pile cutting device according to the drawings works as follows.
    The cutting unit 1 is brought close to the pile to be cut.
    The cutting unit 1 is moved to a position where the pile to be cut is against the front surface of the front support 7 between the first gripping part 4 and the second gripping part 5.
    The height position of the cutting unit 1 is selected so that the blade 8 is at the level of the desired cutting point.
    The second gripping part 5 is moved towards the first gripping part 4, whereby the gripping parts 4, 5 come against the pile.
    The second gripping part 5 is placed against the corner of the pile which is closest to the tip of the second gripping part 5.
    The blade 8 is rotated by a motor 10 about an axis of rotation 9.
    Coolant is applied to the blade 8.
    The rotating shaft 11 is rotated, whereby the blade 8 turns / rotates against the pile to be cut.
    The blade 8 partially rotates to the front of the front support 7 either under the front support or through a slot in the front support 7.
    The axis of rotation 11 is further rotated, whereby the blade 7 sinks into the pile, and the main steel E of the pile at the corner between one gripping part 4, 5, e.g. the first gripping part 4, and the front support 7 is cut.
    The rotational movement of the rotating shaft 11 is limited by the rear surface 8 of the front support 7.
    In this case, a part rotating with the axis of rotation 11, for example the bracket or connecting piece 16 of the motor 3 30 10, hits the rear surface of the front support 7, whereby the rotational movement of the axis of rotation 11 stops.
    The axis of rotation 11 is then rotated in the opposite direction, whereby the blade 8 moves completely to the rear side of the front support 7 and further rotates to the opposite side of the axis of rotation 11 against the pile. The blade 8 sinks into the pile, and the main steel of the pile at the corner between the second gripping part 5 and the front support 7 is sawn crosswise. The rotational movement of the rotating shaft 11 is limited by the rear surface of the front support 7 as described above. In this case, the part rotating with the axis of rotation 11, for example the bracket or connecting piece 11 of the motor 10, strikes the rear surface of the front support 7, whereby the rotational movement of the axis of rotation 11 stops. The blade 8 is then completely screwed back to the rear of the front support 7. Between the extreme positions, the axis of rotation 11 is rotated - at least 180 degrees, typically at least 200 degrees. The gripping parts 4, 5 are detached from the pile and the cutting device 1 is turned 180 degrees. The gripping parts 4, 5 are re-fitted against the pile, after which the end steels at the other two corners of the pile are cut as described above. When the end steels have been cut, the pile is cut at the sawing point, for example by folding.
    The cutting unit 1 can be provided with detectors which indicate when the axis of rotation 11 has rotated to its extreme positions. The detector can be, for example, a pin projecting from the body 2.
    - The cutting device may comprise a second cutting unit attached to the cutting unit 1 so that the pile to be cut can be arranged between the cutting units. In this case, the cutting unit 1 does not comprise gripping means 3 for gripping the pile. The second cutting unit is similar in structure to that described above = cutting unit 1. The second cutting unit also does not comprise gripping means for gripping the N 25 pile. The second cutting unit also does not necessarily comprise = connection means for connecting the second cutting unit to the implement.
    i a The front support 7 of the cutting unit 1 and the front support of the second cutting unit face each other 8 so that the pile to be cut can be fitted between the front supports. The distance between the front support 7 of the cutting unit 3 30 1 and the front support of the second cutting unit is adjustable NN so that the front supports can be fitted against opposite sides of the pile to be cut. The cutting unit 1 and the second cutting unit are fastened to each other, for example by means of a guide. The second cutting unit can be moved along the guide towards the cutting unit 7 and away from the cutting unit 7. The second cutting unit is moved, for example, by a hydraulic cylinder. With two opposing gripping units, the pile cutting can be accelerated because the pile can be sawed simultaneously from opposite sides. oO O OF
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    权利要求:
    Claims (14)
    [1]
    A pile cutting device connectable to a working machine, comprising a cutting unit (1) comprising a body (2) and a rotatable blade (8) for sawing a pile, characterized in that the cutting unit (1) comprises a rotary shaft (11) on which the blade (8) is fixed by means of a fixing arrangement (16), and rotating means (12) for rotating a rotating shaft (11), which rotating shaft (11) is arranged at a distance from the axis of rotation (9) of the blade.
    [2]
    Pile cutting device according to Claim 1, characterized in that the frame (2) comprises a front support (7), such as a front plate, against which the pile to be cut can be fitted, and that the axis of rotation (11) is arranged behind the front support (7). .
    [3]
    Pile cutting device according to claim 2, characterized in that the cutting unit (1) comprises gripping means (3) for gripping the pile, which gripping means (3) comprise a first gripping part (4) and a second gripping part (5) between which the front support (7) is arranged, and the pile to be cut is fit against the front surface of the front support (7) between the gripping parts (4, 5).
    [4]
    Pile cutting device according to one of the preceding claims, characterized in that the axis of rotation (11) is rotatable by at least 180 degrees. O
    [5]
    Pile cutting device, N 25 according to one of the preceding claims, characterized in that the axis of rotation (9) of the blade is behind the front support (7) during the entire rotational movement of the axis of rotation (11).
    O E
    [6]
    Pile cutting device, co according to one of the preceding claims, characterized in that the rear surface of the front support (7) limits the rotational movement of the axis of rotation (11) in both extreme positions.
    [7]
    Pile cutting device according to one of the preceding claims, characterized in that the axis of rotation (11) is fixedly mounted on the frame (2), for example on brackets on the rear surface of the front support (7).
    [8]
    Pile cutting device according to one of the preceding claims, characterized in that the sawing movement of the blade (8) is effected only by the rotational movement of the blade (8) about the axis of rotation (9) and by the rotational movement of the axis of rotation (11).
    [9]
    Pile cutting device according to one of the preceding claims, characterized in that the rotating means (12) comprise a gear (17) connected to the rotary shaft (11), a rack (14) cooperating with the gear (17), and a rack (14) of the actuator (18). to move longitudinally.
    [10]
    Pile cutting device according to one of the preceding claims, characterized in that a constriction element is removably attached to the first gripping part (4), by means of which the center of the pile between the gripping parts (4, 5) can be centered in the transverse direction.
    [11]
    Pile cutting device according to one of the preceding claims, characterized in that the first gripping part (4) is fixedly mounted on the frame (2) and the second gripping part (5) is movable towards the first gripping part (4) and away from the first gripping part (4).
    [12]
    Pile cutting device according to one of the preceding claims, characterized in that the cutting device comprises another cutting unit described in one of the preceding claims 1-2, 4-9, which is fastened to N cutting units (1) so that the pile to be cut can be adapted between the switch-off unit (1) and the second switch-off unit. E
    [13]
    Cutting device according to Claim 12, characterized in that the pile to be cut is arranged between the front support (7) of the cutting unit (1) and the front support of the second cutting unit, so that the front supports are opposite the 2 sides of the pile.
    [14]
    Cutting device according to Claim 12 or 13, characterized in that the distance between the front support (7) of the cutting unit (1) and the front support of the second cutting unit is adjustable.
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    同族专利:
    公开号 | 公开日
    FI129083B|2021-06-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2021-06-30| FG| Patent granted|Ref document number: 129083 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20195388A|FI129083B|2019-05-10|2019-05-10|Cutting device for a pile|FI20195388A| FI129083B|2019-05-10|2019-05-10|Cutting device for a pile|
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