device for preventing truck entering/leaving in Vacuum Circuit Breaker

专利摘要:
The present invention relates to a vacuum circuit breaker, by varying the configuration of the pull-out portion, the prevention device of the conventional vacuum circuit breaker, the horizontal movement plate is reliably operated and durability is improved within a certain range, thereby preventing safety accidents as well This is to improve the stability of the device and to prevent damage. To this end, the present invention, within the casing 338, a lead screw 310 for transmitting a rotational force for movement, a nut 320 is screwed to one side of the lead screw to selectively transmit a rotational force of the lead screw, A fixed frame 330 fixedly installed around the nut, a pair of clamping members 331 installed on both sides of the fixed frame and selectively fitted to the nut 320 to interrupt rotation of the nut 320; In the trolley portion of the vacuum circuit breaker having a horizontal movable plate 334 for moving the clamping member 331 to clamp or release the clamping member 331 while being moved left and right in contact with the clamping member The roller 332 is rotatably installed on the upper portion of the horizontal movable plate 334, and one end is coupled to the horizontal movable plate 334, and the other end is coupled to the casing 338 so that the horizontal movable plate 334 is provided. Home position when moving to one side An elastic spring 410 for applying a restoring force to return to the upper surface, a guide frame 341 fixed to the casing 338 so as to be adjacent to the horizontal movable plate 334, and an upper portion of the guide frame 341 in a state perpendicular to the guide frame. Operation pin 340 is moved up and down by the guide frame 341 guided by the pressing operation, and the horizontal moving plate 334 is coupled to the operation pin and in contact with the roller 332 during the vertical movement of the operation pin 340 ) Is characterized by consisting of the inclined block 430 for transmitting a moving force to be moved in the left and right directions.
公开号:KR20020092537A
申请号:KR1020010031196
申请日:2001-06-04
公开日:2002-12-12
发明作者:박민규
申请人:엘지산전 주식회사；
IPC主号:

专利说明:

Device for preventing truck entering / leaving in Vacuum Circuit Breaker}
[14] The present invention relates to the field of vacuum circuit breaker, and in more detail, in conjunction with the opening and closing operation of the vacuum circuit breaker to prevent the damage of the device as well as to secure the safety of the device by preventing the introduction and withdrawal of the device when the vacuum circuit breaker is in operation. It is.
[15] In general, a vacuum interrupter is a protective device that quickly cuts off the power system in case of any failure in the power system in addition to carrying out the power transmission, switching, and stopping of the power by using a vacuum interrupter as the arc extinguishing medium. Arc products generated at the time of opening and closing of the current and blocking the fault current are rapidly diffused and extinguished in the vacuum vessel, thereby quickly separating circuits, thereby protecting circuits and devices.
[16] In FIG. 1, such a vacuum circuit breaker is generally composed of a cradle 1, a main circuit part 2, a bogie part 3 and auxiliary devices, the bogie part 3 being integrally coupled with the main circuit part 2. And a variety of mechanical devices for selectively moving the main circuit part 2 to the cradle 1.
[17] The vacuum circuit breaker must be put into electrical connection with the cradle 1 in order to perform a task. The vacuum circuit breaker being put in means that the trolley portion 3 of the vacuum circuit breaker is completely moved toward the cradle 1 so that the trolley portion ( It refers to a state in which each contact of the main circuit unit 2 integrally coupled to the front of 3) is completely bound to the cradle 1.
[18] Therefore, when the vacuum circuit breaker is being introduced, serious safety accidents or damage to the device may be caused by the introduction and withdrawal of the cart, so that the vacuum circuit breaker is pulled in and out to prevent the above accidents. There is a need for a separate pull-out and prevent-out device.
[19] Then, a brief look at the conventional inlet, outflow prevention device of the vacuum circuit breaker bogie according to the embodiment as follows.
[20] In Figure 1, the casing 338 of the trolley portion 3 is provided with a lead screw 310 for applying a rotational force so that the trolley portion is movable in the front and rear direction, and the lead screw receives a rotational force of the lead screw to the trolley portion. The nut 320 is screwed to impart a moving force. The pull-out prevention device intermittently rotates the nut 320 to prevent the cart 3 from being unnecessarily pulled in and out of the nut 320. It is an added form.
[21] The inlet and outlet preventing device includes a clamping member 331 installed around the nut 320, a clamping member 331 installed on both sides of the nut 320 of the fixing frame, and a clamping member in contact with the clamping member. It is composed of a horizontal movable plate 334 for moving up and down, and a horizontal movable plate manipulator 336 coupled to one side of the horizontal movable plate to add a moving force to selectively horizontally move the horizontal movable plate 334.
[22] The clamping member 331 is provided with a roller 332 at one end and a locking piece 333 is integrally formed at the other end, and the locking piece is selectively fitted into the locking groove 321 formed in the nut 320. By loading, the rotational force of the lead screw 310 is interrupted.
[23] The horizontal movable plate 334 is horizontally moved left and right by a horizontal movable plate operating unit, and the roller 332 of the clamping member 331 is inserted into the sliding groove 335 formed on one side of the upper and lower ends to selectively insert and detach the clamping member. The locking piece 333 of the 331 is clamped or released by the locking groove 321 of the nut 320.
[24] Here, the configuration of the horizontal movable plate operating part 336 is the first link member 337 is hinged directly to the horizontal movable plate 334, one end is hinged to the other end of the first link member A second link member 339 hinged to the casing 338, and an operation pin 340 installed so as to vertically move according to a pressing operation while being hinged to the middle of the second link member 339; A guide frame 341 for guiding the vertical movement in a state in which the operation pin is wrapped, and a coil spring 342 installed between the operation pin 340 and the guide frame to repel compression.
[25] Looking at the operation of such components, in Figure 3 in the normal state, the operation pin 340 is protruded upward by the elastic force of the coil spring 342, so the second link member 339 hinged thereto is also positioned upwards. In addition, since the second link member is hinged to the first link member 337 again, the horizontal movable plate 334 is moved to the right in the drawing by the first link member. In this case, the nut 320 Since the roller 332 of the clamping member 331 installed on both sides of the) is deeply inserted into the sliding groove 335 of the horizontal movable plate 334, the engaging piece 333 of the clamping member 331 is accordingly The nut 320 is not in the state of being fitted into each of the engaging grooves 321 of the.
[26] Therefore, in this state, since the nut 320 is fixed, the cart 3 is movable as the lead screw 310 rotates in one direction.
[27] However, in the state where the vacuum circuit breaker is completely inserted into the cradle 1 (when it is being put in), the vacuum circuit breaker should be fixed so that the vacuum circuit breaker cannot be pulled in or out. In this case, the rotating piece 343 installed above the operation pin 340 is As the drawing is rotated in the clockwise direction, the operation pin is pressed, and in the state where the operation pin 340 is moved downward, the first and second link members 337 and 339 coupled thereto are straightened in a straight line. The horizontal movable plate 334 is pushed to the left in the drawing.
[28] At this time, the roller 332 of the clamping member 331 inserted into the sliding groove 335 of the horizontal movable plate is pushed up and down along the sliding groove 335, respectively, so that the clamping member 331 is a nut 320 Since the nut 320 is rotated together with the lead screw 310 because it is separated from the locking groove 321 of the) will be idle to prevent the balance (3) to move.
[29] Therefore, in this state, the vacuum circuit breaker cannot be drawn in or drawn out by the rotational force of the lead screw 310, so that unnecessary drawing and exit is prevented when the vacuum circuit breaker is put in.
[30] However, in the conventional pull-out and pull-out device of such a vacuum circuit breaker, since a large friction occurs at each part including the operation pin and the link member as the clamping operation of the nut is repeated, each part deforms or breaks during operation. In the case of a malfunction or failure in the inlet / outlet prevention device due to the above problem, the inlet and outlet occurs during the input of the vacuum circuit breaker, causing serious damage to the device and safety accidents.
[31] The present invention has been made to solve the above-mentioned problems, by varying the configuration of the conventional pull-out, withdrawal device to ensure that the horizontal moving plate in a certain range and to improve the durability, thereby preventing safety accidents as well It is an object of the present invention to provide a device for preventing the introduction and withdrawal of a loan portion of a vacuum circuit breaker to improve the stability of the device and to prevent damage to the device.
[1] Figure 1 is a side cross-sectional view showing a brief configuration of a general vacuum circuit breaker
[2] Figure 2 is a plan view of the main portion shown by partially cutting the conventional vacuum circuit breaker bogie
[3] Figure 3 is a schematic diagram showing a simplified horizontal moving plate operation unit constituting the prevention of pull-out, pull-out of the conventional vacuum circuit breaker
[4] 4 is an enlarged schematic view of the lead screw and the clamping member in FIG.
[5] 5 is a plan view of a main portion of the vacuum circuit breaker bogie part of the present invention partially cut away
[6] Figure 6 is a schematic diagram showing a simplified horizontal moving plate operation unit constituting the prevention unit pull-out, out of the vacuum breaker of the present invention
[7] <Explanation of symbols for the main parts of the drawings>
[8] 3: loan portion 310: lead screw
[9] 320: nut 330: fixed frame
[10] 331: clamping member 334: horizontal transfer plate
[11] 340: operation pin 341: guide frame
[12] 410: elastic spring 420: roller
[13] 430: inclined block
[32] According to the present invention for achieving the above object, in the casing, a lead screw for transmitting the rotational force for movement, a nut screwed to one side of the lead screw to selectively transmit the rotational force of the lead screw, and the circumference of the nut A fixing frame fixed to the fixing frame, a pair of clamping members installed on both sides of the fixing frame and selectively fitted to the nut to interlock the rotation of the nut, and moving left and right in contact with the clamping member. A trolley portion of a vacuum circuit breaker having a horizontal movable plate for applying a moving force to clamp or unclamp a nut, comprising: a roller rotatably mounted on an upper portion of the horizontal movable plate, and one end coupled to the horizontal movable plate; The other end is connected to the casing, and the restoring force is added to return to the original position when the horizontal plate moves to one side. Is an elastic spring, a guide frame fixed to the casing to be adjacent to the horizontal moving plate, installed in a state perpendicular to the guide frame and the operation pin is moved up and down by the guidance of the guide frame as the upper part is pressed operation, The pull-out unit of the vacuum breaker, coupled to the operation pin of the vacuum circuit breaker, characterized in that consisting of an inclined block that transfers the movement force to move the horizontal moving plate in the horizontal direction while contacting the rollers when moving up and down the operation pin Is provided.
[33] Hereinafter, the present invention will be described in more detail with reference to FIG. 5 or FIG. 6.
[34] 5 is a plan view showing a main portion of the vacuum circuit breaker of the present invention with a partial cutaway, and FIG. 6 is a schematic view of a horizontal movable plate operating unit constituting the apparatus for preventing the entry and withdrawal of the body of the vacuum circuit breaker of the present invention. In the same components as those of the conventional components among the components of the invention, the description thereof will be omitted. However, in the drawings, the numbers given in the related art will be given as they are.
[35] Hereinafter, the main configuration of the apparatus according to the present invention will be described in detail.
[36] One end is fixed to the upper portion of the horizontal movable plate 334 by the bolt and the other end is fixed to the casing 338 so that the elastic spring 410 is installed so that the horizontal movable plate 334 moves to the left when the horizontal movable plate 334 is moved to the left side. The roller 420 is rotatably installed on the right side of the elastic spring.
[37] In addition, the inclined block 430 having an inclined surface 431 formed on one side is fixed to the stop portion of the operation pin 340 inserted into the guide frame 341 so that the inclined surface is directly above the roller 420. It is located in.
[38] Referring to the operation of the present invention configured as described above, since the elastic spring 410 is pulling the horizontal movable plate 334 to the right in the normal state, the roller 332 of the clamping member is the sliding groove 335 of the horizontal movable plate. The locking piece 333 of the clamping member 331 is inserted into the locking groove 321 of the nut 320 so as not to be rotated. Then, when the vacuum circuit breaker is inserted, the rotating piece 343 is inserted into the locking groove 321 of the nut 320. As it rotates in a clockwise direction in this drawing, the operation pin 340 is pushed downward.
[39] Therefore, when the operation pin 340 is pressed down and moved downwards, the inclined block 430 fixedly coupled thereto is also moved downwards. At this time, the roller 420 is located directly below the inclined surface 431 of the inclined block. Therefore, as the inclined block 430 is moved, the roller 420 is in contact with the inclined surface, and as the inclined block 430 is moved further downward, the roller 420 performs a rolling motion along the inclined surface 431. Done.
[40] Therefore, since the roller 420 is rolled along the inclined surface, the horizontal moving plate coupled to the lower side is also moved to the left in the drawing to operate the clamping member.
[41] At this time, since the roller 420 has almost no friction during rolling motion, the roller 420 can be moved to the left very smoothly. The horizontal plate 334 is moved to the left by the above-described action. At this time, the roller 332 of the clamping member 331 is separated from each other up and down by sliding the sliding groove 335 of the horizontal moving plate, so that the nut 320 is released by clamping so that the pull-out part 3 can be prevented.
[42] On the other hand, when the vacuum circuit breaker is released, the rotating piece 343 is rotated in the reverse direction, so that the operation pin 340 receives elasticity of the elastic spring 410 and the coil spring 342, thereby moving upwards. Since the moving plate 334 is also moved to the right again to the original position, the nut 320 is locked so as not to rotate. In this case, the vacuum circuit breaker becomes movable by the rotation of the lead screw 310.
[43] The apparatus for preventing the draw-in and pull-out of the vacuum breaker of the present invention is different from the conventional configuration, so that the horizontal moving plate is reliably operated in a certain range, thereby reducing the operating error, thereby improving the reliability of the device and improving the durability of the device. It does not cause malfunction.
[44] For the above reason, when the vacuum circuit breaker is being put in, unnecessary pulling and unloading of the trolley is reliably prevented. Therefore, there is a beneficial effect of preventing damage to the device due to various safety accidents, contact resistance, temperature rise and insulation breakdown.

权利要求:
Claims (3)
[1" claim-type="Currently amended] In the casing, a lead screw for transmitting the rotational force for movement, a nut screwed to one side of the lead screw to selectively transmit the rotational force of the lead screw, a fixed frame fixedly fixed around the nut, and the fixed frame A pair of clamping members installed on both sides and selectively fitted to the nut to control the rotation of the nut, and a moving force is applied to the clamping member to clamp or release the clamping member while being moved left and right in contact with the clamping member. In the trolley portion of the vacuum circuit breaker having a horizontal movable plate,
A roller rotatably installed on an upper portion of the horizontal movable plate;
One end is coupled to the horizontal movable plate and the other end is coupled to the casing elastic spring for adding a restoring force to return to the original position when the horizontal movable plate moves to one side;
A guide frame fixed to the casing to be adjacent to the horizontal movable plate;
An operation pin installed vertically to the guide frame and moved up and down by the guide frame as the upper part is pressed and operated;
Coupled to the operation pin, the trolley pull-out, prevention device of the vacuum circuit breaker, characterized in that consisting of an inclined block that transfers the movement force so that the horizontal plate moves in the horizontal direction while in contact with the roller when the operation pin moves up and down.
[2" claim-type="Currently amended] The method of claim 1,
The inclined block is a pull-out portion of the vacuum breaker, it characterized in that the inclined surface is formed in the portion located directly above the roller.
[3" claim-type="Currently amended] The method of claim 1,
Between the guide frame and the operation pins, the pull-out portion of the vacuum circuit breaker, it characterized in that the coil spring is provided so that the operation pin is more easily returned upward.

类似技术:

---

公开号 | 公开日 | 专利标题

---

EP1296341B1|2011-08-17|Lever fitting-type manual disconnector

---

JP4406016B2|2010-01-27|Circuit breaker for wiring

---

CN1192406C|2005-03-09|Multipolar circuit-protection assembly

---

US8129641B2|2012-03-06|Installation switchgear having a spring-loaded terminal arrangement

---

KR101117975B1|2012-03-14|Withdrawable device of main circuit for vacuum circuit breaker

---

JP5237343B2|2013-07-17|circuit breaker

---

CA1154062A|1983-09-20|Electrical switchboard having improved drawoutapparatus

---

JP4056567B2|2008-03-05|electromagnetic switch

---

KR100854384B1|2008-08-26|An automatic discharging apparatus for a closing spring of an air circuit breaker and an air circuit breaker with the apparatus

---

US4392036A|1983-07-05|Low-voltage protective circuit breaker with a forked locking lever

---

CN106449287B|2018-07-31|Breaker with removable terminal radical occlusion device

---

US20040262137A1|2004-12-30|Low-voltage circuit breaker

---

JP4677020B2|2011-04-27|Circuit breaker with automatic release link mechanism

---

JP2008103337A|2008-05-01|Air circuit breaker

---

DE10120737C1|2002-10-31|Low-voltage switchgear with a locking device for a device rack

---

CA2752795C|2018-02-27|Electrical switching apparatus and levering assembly therefor

---

US9685282B2|2017-06-20|Door interlock device for vacuum circuit breaker

---

CA2792021C|2018-02-13|Fused disconnect switch with terminal opening cover

---

CN102110545A|2011-06-29|Interlock apparatus of ground switch for vacuum circuit breaker

---

JP2011108648A|2011-06-02|Lock device of circuit breaker

---

EP2254208B1|2018-05-09|Withdrawable device of vacuum circuit breaker

---

CN103069675A|2013-04-24|Portable remote racking device for a circuit breaker

---

US20100326799A1|2010-12-30|Device for preventing withdrawing and inserting of a circuit breaker

---

US6689968B2|2004-02-10|Circuit breaker with capacitor discharge system

---

KR20060030971A|2006-04-12|Pressure trip device of the circuit breaker

同族专利:

---

公开号 | 公开日

---

KR100413480B1|2003-12-31|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

法律状态:
2001-06-04|Application filed by 엘지산전 주식회사

---

2001-06-04|Priority to KR20010031196A

---

2002-12-12|Publication of KR20020092537A

---

2003-12-31|Application granted

---

2003-12-31|Publication of KR100413480B1

优先权:

---

申请号 | 申请日 | 专利标题

---

KR20010031196A|KR100413480B1|2001-06-04|2001-06-04|device for preventing truck entering/leaving in Vacuum Circuit Breaker|