A trolley type circuit breaker maintenance device

Abstract

The present invention discloses a trolley type circuit breaker maintenance device, comprising a flatbed car, a lifting mechanism is arranged on the flatbed car, a support plate with a U-shaped cross section is arranged on the upper end of the lifting mechanism, a pair of guide grooves for clamping the pulley of the circuit breaker chassis car are arranged facing each other along the length direction on the inner side surfaces of the two parallel plates of the support plate, a front end support mechanism for providing a support point for the circuit breaker to be repaired is arranged on the upper front end of the flatbed car, a pulling mechanism for providing a pulling force for the circuit breaker to be repaired is arranged on the upper rear end of the flatbed car, and a control mechanism for coordinating and controlling the lifting mechanism, the front end support mechanism and the pulling mechanism is arranged on the flatbed car. The present invention can pull the trolley type circuit breaker to be repaired out of the cabinet and stably clamp it in the guide groove, and has the advantages of simple structure and convenient operation.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker maintenance, and in particular to a trolley type circuit breaker maintenance device. Background Art

[0002] "Vacuum circuit breaker" is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and arc extinguishing without maintenance, and is widely used in distribution networks. The trolley type circuit breaker, as the name suggests, is installed on a removable trolley. Since the trolley cabinet has good interchangeability, it can greatly improve the reliability of power supply. If this one breaks down, it can be replaced with a spare trolley.

[0003] When a circuit breaker fails and needs to be repaired, there are generally three options:

[0004] 1. Return to the manufacturer for resolution and processing. The disadvantage is that it cannot be supplied in time in the event of emergency maintenance, the delivery cycle is slow, and a spare circuit breaker must be available to ensure replacement.

[0005] 2. On-site or in a suitable location, a lifting rod is set up and used with hand winches, lifting ropes and other tools to lift the circuit breaker to a certain working height from the ground. The maintenance personnel then disassemble and repair the circuit breaker from the bottom of the circuit breaker. The disadvantages of this solution are that the initial preparation time is long, the tools are bulky and occupy a large area of ​​land, the maintenance personnel are required to have a large number of personnel, the unexpected risks are high, and the working space is limited and the operation is difficult.

[0006] 3. Lift, flip and disassemble the circuit breaker for maintenance in the distribution room. During this process, several maintenance personnel are required to lift the circuit breaker off the lower operating trolley, and use illegal methods to move the circuit breaker to the ground and flip it 180 degrees to an inverted state for disassembly and maintenance. This method is very likely to cause the circuit breaker to fall as a whole, the pole head contacts to be squeezed and deformed, and the spring mechanism to be skewed and damaged, thereby causing greater damage.

[0007] The above three solutions all have the problems of slow progress, low efficiency, high labor intensity, and ineffective guarantee of personnel and equipment safety. Therefore, it is necessary to develop a device for the maintenance of handcart-type circuit breakers.

[0008] The invention patent application with application publication number CN 108321710 A discloses: a multifunctional trolley-type circuit breaker maintenance vehicle, including a vehicle frame, an upper and lower sliding unit, a slewing support bearing, a rotating load-bearing fixed plate, two ball linear guide pairs, a left and right rotating screw, a screw nut, two opening and closing movable plates, two L-shaped load-bearing rails, two Z-shaped movable fixed plates, a locking movable rod bolt, a clamping channel steel, a load-bearing upper steel beam, a pulley block, a hand-cranked winch and a traction wire rope, wherein the upper and lower sliding units are arranged on the vehicle frame, the rotating load-bearing fixed plate is located approximately in the middle of the maintenance vehicle and is connected to the upper and lower sliding units, the slewing support bearing is fixedly connected to the upper and lower sliding units and the rotating load-bearing fixed plate, a ball linear guide pair is transversely arranged on the upper and lower parts of the rotating load-bearing fixed plate, and a slider is passed on the ball linear guide pair Two longitudinally arranged opening and closing movable plates are connected, and the left and right movement of the opening and closing movable plates is controlled by the left and right rotating screw and the nut. The lower ends of the two opening and closing movable plates are each connected to an L-shaped load-bearing track, and the L-shaped load-bearing track is used to cooperate with the roller of the circuit breaker chassis vehicle. The two Z-shaped movable fixed plates are respectively fixed to the two opening and closing movable plates. The fixed clamping channel steel is fixedly connected to the two Z-shaped movable fixed plates and is arranged horizontally. The fixed locking movable rod bolt is used to realize the fixed locking of the Z-shaped movable fixed plate and the circuit breaker body. The load-bearing upper steel beam is located at the top of the frame body, and the pulley block is installed on the load-bearing upper steel beam. The traction wire rope passes through the pulley block and is connected to the upper and lower sliding units at one end and the hand-cranked winch at the other end to realize the lifting and lowering movement of the upper and lower sliding units. This invention application can greatly improve the efficiency of maintenance and repair work, but its structure is too complicated and the manufacturing cost is high.

[0009] The invention patent application with application publication number CN 105668450A discloses a circuit breaker mechanism maintenance trolley, including a gantry frame, a lifting body is arranged on the gantry frame, the connection end of the lifting body and the gantry frame is driven by a driving mechanism to perform lifting and lowering movement, a rotating body is arranged on the lifting body, the lifting body is driven by an electric mechanism to rotate the rotating body, and a docking beam for docking with the circuit breaker mechanism is arranged on the rotating body. The circuit breaker mechanism maintenance trolley can realize the circuit breaker mechanism being screwed on the docking beam of the rotating body, and the horizontal height and angle of the circuit breaker mechanism can be adjusted to a suitable maintenance position, which is efficient, safe and convenient, and saves time and effort. However, the invention also has the disadvantages of complex structure and complex operation. Summary of the invention

[0010] In view of this, the purpose of the present invention is to provide a trolley-type circuit breaker maintenance device to address the deficiencies in the prior art, which can pull the trolley-type circuit breaker to be repaired out of the cabinet and stably clamp it in the guide groove, and has the advantages of simple structure and convenient operation.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] A trolley type circuit breaker maintenance device, comprising a flatbed car, a lifting mechanism is arranged on the flatbed car, a support plate with a U-shaped cross section is arranged on the upper end of the lifting mechanism, a pair of guide grooves for clamping the pulley of the circuit breaker chassis car are arranged facing each other along the length direction on the inner side surfaces of two parallel plates of the support plate, a front end support mechanism for providing a support point for the circuit breaker to be repaired is arranged on the front end of the upper part of the flatbed car, a pulling mechanism for providing a pulling force for the circuit breaker to be repaired is arranged on the upper rear end of the flatbed car, and a control mechanism for coordinating and controlling the lifting mechanism, the front end support mechanism and the pulling mechanism is arranged on the flatbed car;

[0013] The front end support mechanism includes a plurality of automatic telescopic rods vertically arranged at the front end of the upper part of the flatbed vehicle, and a U-shaped base is commonly arranged at the upper ends of the plurality of automatic telescopic rods. A roller wheel for providing a front end rolling fulcrum for the circuit breaker to be repaired is rotatably arranged in the U-shaped base.

[0014] Furthermore, the lifting mechanism is an automatic lifting column arranged in the middle of the upper part of the flatbed truck, or two rows of automatic lifting columns arranged in parallel on the front and rear sides of the upper part of the flatbed truck.

[0015] Furthermore, the front end of the guide groove is in a flared shape.

[0016] Furthermore, the pulling mechanism includes a small winch arranged at the rear end of the upper part of the flatbed truck, a pulley bracket arranged on the upper part of the flatbed truck and located in front of the small winch, and a fixed pulley arranged on the pulley bracket. The rope on the small winch passes around the fixed pulley, and the free end of the rope on the small winch is provided with two hooks for hooking the handle of the chassis of the circuit breaker to be repaired.

[0017] Furthermore, auxiliary support mechanisms are provided on both sides of the front end of the flatbed truck, and the auxiliary support mechanism includes a platform arranged on the left or right side of the front end of the flatbed truck, and a threaded through hole is vertically provided on the platform, a threaded rod is threadedly connected to the threaded through hole, and a pad is ball-hinged at the bottom of the threaded rod.

[0018] Furthermore, a rotating handle is provided at the upper end of the threaded rod.

[0019] Furthermore, a vulcanized rubber pad is arranged at the bottom of the pad.

[0020] Furthermore, the pulley bracket is a pair of vertical plates symmetrically arranged on the front and rear sides of the flatbed truck, and a pair of the vertical plates are provided with multiple upward inclined grooves along the vertical direction near one side of the small winch, and the height of the fixed pulley can be adjusted by being arranged in the inclined grooves at different heights.

[0021] Furthermore, a vulcanized rubber layer is provided on the outer surface of the roller.

[0022] Furthermore, the control mechanism is a PLC single chip microcomputer or a microcomputer.

[0023] Furthermore, the number of the inclined slots is 2-5.

[0024] Furthermore, a fixing mechanism for temporarily fixing the chassis vehicle of the circuit breaker to be repaired is provided at the inner rear end of the support plate, and the fixing mechanism includes a limiting beam arranged between two parallel plates of the support plate, a socket arranged on the limiting beam, and a plug inserted in the socket, and the position of the socket matches the position of the handle on the chassis vehicle of the trolley-type circuit breaker to be repaired.

[0025] The beneficial effects of the present invention are:

[0026] The present invention aims at the problems of slow progress, low efficiency, high labor intensity and ineffective protection of personnel and equipment safety when repairing circuit breakers. The present invention provides a trolley-type circuit breaker repair device, comprising a flatbed car, a lifting mechanism is arranged on the flatbed car, a support plate with a U-shaped cross-section is arranged at the upper end of the lifting mechanism, a pair of guide grooves for clamping the pulley of the circuit breaker chassis car are arranged facing each other along the length direction on the inner side surfaces of two parallel plates of the support plate, a front end support mechanism for providing a support point for the circuit breaker to be repaired is arranged at the front end of the upper part of the flatbed car, a pulling mechanism for providing a pulling force for the circuit breaker to be repaired is arranged at the rear end of the upper part of the flatbed car, and a control mechanism for coordinating and controlling the lifting mechanism, the front end support mechanism and the pulling mechanism is arranged on the flatbed car.

[0027] Among them, the front-end supporting mechanism includes a plurality of automatic telescopic rods vertically arranged at the front end of the upper part of the flatbed truck, and a U-shaped base is commonly arranged at the upper ends of the plurality of automatic telescopic rods. A roller wheel for providing a front-end rolling fulcrum for the circuit breaker to be repaired is rotatably arranged in the U-shaped base. When the trolley-type circuit breaker is just pulled out a part, the roller wheel whose height is adjusted by the automatic telescopic rod can be used for support, and at the same time the trolley-type circuit breaker can be guided to the guide groove.

[0028] In addition, the front end of the guide groove is in a flared shape so that the wheels of the chassis vehicle of the circuit breaker to be inspected can be easily inserted; in order to increase the stability of the device during use and avoid the rear end of the device from tilting due to excessive weight at the front end when moving the circuit breaker to be inspected, auxiliary support mechanisms are provided on both sides of the front end of the flatbed vehicle, and the auxiliary support mechanism includes a platform arranged on the left or right side of the front end of the flatbed vehicle, a threaded through hole is vertically provided on the platform, a threaded rod is threadedly connected to the threaded through hole, and a pad is ball-hinged at the bottom of the threaded rod.

[0029] In addition, in order to facilitate manual rotation of the threaded rod, a rotating handle is provided at the upper end of the threaded rod; at the same time, in order to prevent the auxiliary support mechanism of the device from damaging the ground, a vulcanized rubber pad is provided at the bottom of the pad.

[0030] In addition, in order to facilitate the adjustment of the height of the fixed pulley, the pulley bracket is a pair of vertical plates symmetrically arranged on the front and rear sides of the flatbed truck, and a plurality of upward inclined grooves are vertically opened on one side of the pair of vertical plates close to the small winch, and the fixed pulley is arranged in the inclined grooves at the same height on a pair of vertical plates on the inclined grooves.

[0031] The working principle of the present invention is as follows: first, the height of the fixed pulley, the height of the roller in the front-end support mechanism and the height of the guide groove on the support plate are adjusted according to the height of the installation position of the handcart-type circuit breaker to be inspected, and then two hooks are respectively hooked on the two handles of the chassis vehicle of the circuit breaker to be inspected, and the small winch is turned on. The rope on the small winch is retracted to drive the circuit breaker to be inspected to move outward. When the outermost end of the circuit breaker to be inspected moves outward for a short distance, the rollers on the front-end support mechanism located at the front end of the flatbed vehicle can support the extended circuit breaker to be inspected. Then, driven by the retraction of the rope on the small winch, the rollers on both sides of the chassis vehicle of the circuit breaker to be inspected are stuck in the guide groove until the circuit breaker to be inspected is completely moved out of the cabinet. At this time, the guide groove can play a guiding role on the one hand, and on the other hand, it can limit the circuit breaker to be inspected in the guide groove to avoid tilting, so as to facilitate the inspection and maintenance of the circuit breaker.

[0032] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the first embodiment of the present invention;

[0034] Figure 2 It is a schematic right view of the structure of the first embodiment of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the second embodiment of the present invention;

[0036] Figure 4 It is a right side schematic diagram of the structure of the second embodiment of the present invention;

[0037] Figure 5 It is a schematic diagram of the front view of the structure of the third embodiment of the present invention;

[0038] Figure 6It is a schematic diagram of the front view of the structure of the fourth embodiment of the present invention;

[0039] Figure 7 It is a schematic front view of the structure of a fifth embodiment of the present invention. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0041] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or coupling. The term "and / or" used herein includes any unit and all combinations of one or more associated listed items.

[0042] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such here. It should be understood that in order to make the technical solution clearer, the terms used herein such as "front, back, left, right, up, down" and the like to indicate directions are all relative to the present invention. Figure 1 The directional noun does not change due to the change of view.

[0043] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0044] Example 1

[0045] like Figure 1 and Figure 2 As shown, a trolley-type circuit breaker maintenance device comprises a flatbed truck 1, a lifting mechanism 2 is arranged on the flatbed truck 1, a support plate 3 with a U-shaped cross-section is arranged on the upper end of the lifting mechanism 2, a pair of guide grooves 3b for clamping the pulley of the circuit breaker chassis truck are arranged facing each other along the length direction on the inner side surfaces of the two parallel plates 3a of the support plate 3, a front end support mechanism for providing a support point for the circuit breaker to be repaired is arranged on the upper front end of the flatbed truck 1, a pulling mechanism for providing a pulling force for the circuit breaker to be repaired is arranged on the upper rear end of the flatbed truck 1, and a control mechanism 4 for coordinating and controlling the lifting mechanism 2, the front end support mechanism and the pulling mechanism is arranged on the flatbed truck 1.

[0046] The front end support mechanism includes two automatic telescopic rods 5 vertically arranged at the front end of the upper part of the flatbed vehicle 1, and a U-shaped base 6 is commonly arranged at the upper ends of the plurality of automatic telescopic rods 5. A roller 7 is rotatably arranged inside the U-shaped base 6 to provide a front end rolling fulcrum for the circuit breaker to be repaired.

[0047] The lifting mechanism 2 is an automatic lifting column arranged in the middle of the upper part of the flatbed vehicle 1 .

[0048] The pulling mechanism includes a small winch 8 arranged at the upper rear end of the flatbed truck 1, a pulley bracket 9 arranged on the upper part of the flatbed truck 1 and located in front of the small winch 8, and a fixed pulley 10 arranged on the pulley bracket 9. The rope 11 on the small winch 8 passes around the fixed pulley 10, and the free end of the rope 11 on the small winch 8 is provided with two hooks 12 for hooking the handle of the chassis of the circuit breaker to be repaired.

[0049] The control mechanism 4 is a PLC single chip microcomputer or a microcomputer.

[0050] In this embodiment, a trolley-type circuit breaker maintenance device is provided, including a flatbed truck, a lifting mechanism is arranged on the flatbed truck, a support plate with a U-shaped cross-section is arranged at the upper end of the lifting mechanism, a pair of guide grooves for clamping the pulley of the circuit breaker chassis truck are arranged facing each other along the length direction on the inner side surfaces of two parallel plates of the support plate, a front end support mechanism for providing a support point for the circuit breaker to be repaired is arranged at the front end of the upper part of the flatbed truck, a pulling mechanism for providing a pulling force for the circuit breaker to be repaired is arranged at the rear end of the upper part of the flatbed truck, and a control mechanism for coordinating and controlling the lifting mechanism, the front end support mechanism and the pulling mechanism is arranged on the flatbed truck.

[0051] Among them, the front-end supporting mechanism includes two automatic telescopic rods vertically arranged at the front end of the upper part of the flatbed truck, and a U-shaped base is jointly arranged at the upper ends of the two automatic telescopic rods. A roller for providing a front-end rolling fulcrum for the circuit breaker to be repaired is rotatably arranged in the U-shaped base. When the trolley-type circuit breaker is just pulled out a part, it can be supported by the roller whose height is adjusted by the automatic telescopic rod, and the trolley-type circuit breaker can be guided to the guide groove at the same time. In this embodiment, the number of automatic telescopic rods is selected as 2, and obviously more can also be selected, such as 3, 4 or 5.

[0052] In addition, the lifting mechanism adopts an automatic lifting column set in the middle of the upper part of the flatbed truck. The automatic lifting column is automatically lifted and lowered under the control of the control mechanism. Obviously, in order to make the lifting mechanism more stable as a whole, the lifting mechanism can also adopt two rows of automatic lifting columns set in parallel on the front and rear sides of the upper part of the flatbed truck; at the same time, the control mechanism adopts a PLC single-chip microcomputer, and obviously a microcomputer can also play a control role.

[0053] Example 2

[0054] like Figure 3 and Figure 4 As shown, a trolley-type circuit breaker maintenance device comprises a flatbed truck 1, a lifting mechanism 2 is arranged on the flatbed truck 1, a support plate 3 with a U-shaped cross-section is arranged on the upper end of the lifting mechanism 2, a pair of guide grooves 3b for clamping the pulley of the circuit breaker chassis truck are arranged facing each other along the length direction on the inner side surfaces of the two parallel plates 3a of the support plate 3, a front end support mechanism for providing a support point for the circuit breaker to be repaired is arranged on the upper front end of the flatbed truck 1, a pulling mechanism for providing a pulling force for the circuit breaker to be repaired is arranged on the upper rear end of the flatbed truck 1, and a control mechanism 4 for coordinating and controlling the lifting mechanism 2, the front end support mechanism and the pulling mechanism is arranged on the flatbed truck 1.

[0055] The front end support mechanism includes two automatic telescopic rods 5 vertically arranged at the front end of the upper part of the flatbed vehicle 1, and a U-shaped base 6 is commonly arranged at the upper ends of the two automatic telescopic rods 5. A roller 7 for providing a front end rolling fulcrum for the circuit breaker to be repaired is rotatably arranged in the U-shaped base 6.

[0056] The lifting mechanism 2 is an automatic lifting column arranged in the middle of the upper part of the flatbed vehicle 1 .

[0057] The front end of the guide groove 3b is in a flared shape 3c.

[0058] The pulling mechanism includes a small winch 8 arranged at the upper rear end of the flatbed truck 1, a pulley bracket 9 arranged on the upper part of the flatbed truck 1 and located in front of the small winch 8, and a fixed pulley 10 arranged on the pulley bracket 9. The rope 11 on the small winch 8 passes around the fixed pulley 10, and the free end of the rope 11 on the small winch 8 is provided with two hooks 12 for hooking the handle of the chassis of the circuit breaker to be repaired.

[0059] Auxiliary support mechanisms are provided on both sides of the front end of the flatbed truck 1, and the auxiliary support mechanisms include a platform 13 arranged on the left or right side of the front end of the flatbed truck 1, and a threaded through hole 14 is vertically provided on the platform 13. A threaded rod 15 is connected to the inner thread of the threaded through hole 14, and a pad 16 is ball-hinged at the bottom of the threaded rod 15.

[0060] The control mechanism 4 is a microcomputer.

[0061] In this embodiment, the front end of the guide groove is in a flared shape so that the wheels of the chassis vehicle of the circuit breaker to be inspected can be easily inserted; in order to increase the stability of the device during use and avoid the rear end of the device from tilting due to excessive weight at the front end when moving the circuit breaker to be inspected, auxiliary support mechanisms are provided on both sides of the front end of the flatbed vehicle, and the auxiliary support mechanism includes a platform arranged on the left or right side of the front end of the flatbed vehicle, a threaded through hole is vertically provided on the platform, a threaded rod is threadedly connected to the threaded through hole, and a pad is ball-hinged at the bottom of the threaded rod.

[0062] Example 3

[0063] like Figure 5 As shown, the difference between it and embodiment 2 is that a rotating handle 17 is provided at the upper end of the threaded rod 15 .

[0064] A vulcanized rubber pad 18 is disposed at the bottom of the pad 16 .

[0065] In this embodiment, in order to facilitate manual rotation of the threaded rod, a rotating handle is provided at the upper end of the threaded rod; at the same time, in order to prevent the auxiliary support mechanism of the device from damaging the ground, a vulcanized rubber pad is provided at the bottom of the pad.

[0066] Example 4

[0067] like Figure 6 As shown, the difference from Example 3 is that the pulley bracket 9 is a pair of vertical plates 19 symmetrically arranged on the front and rear sides of the flatbed vehicle 1, and a pair of the vertical plates 19 are provided with four upward inclined grooves 20 along the vertical direction near one side of the small winch 8, and the height of the fixed pulley 10 can be adjusted by being arranged in the inclined grooves at different heights.

[0068] The outer surface of the roller 7 is provided with a vulcanized rubber layer.

[0069] In this embodiment, in order to facilitate the adjustment of the height of the fixed pulley, the pulley bracket is a pair of vertical plates symmetrically arranged on the front and rear sides of the flatbed truck, and four upward inclined grooves are vertically opened on one side of the pair of vertical plates close to the small winch. The fixed pulley is arranged in the inclined grooves located at the same height on a pair of vertical plates of the inclined grooves. Obviously, the number of inclined grooves can be set according to actual needs, such as 2, 3, 5, etc.

[0070] Example 5

[0071] like Figure 7 As shown, the difference between it and Example 4 is that: a fixing mechanism for temporarily fixing the chassis vehicle of the circuit breaker to be repaired is provided at the inner rear end of the support plate 3, and the fixing mechanism includes a limiting beam 21 arranged between the two parallel plates 3a of the support plate 3, a socket 22 arranged on the limiting beam 21, and a plug 23 inserted in the socket 22, and the position of the socket 22 matches the position of the handle on the chassis vehicle of the circuit breaker to be repaired.

[0072] In this embodiment, in order to make the circuit breaker to be repaired more stable and immovable after being pulled out of the cabinet and placed in the guide grooves on the inner sides of the two parallel plates of the support plate, a fixing mechanism for temporarily fixing the chassis vehicle of the circuit breaker to be repaired is provided at the inner rear end of the support plate, and the fixing mechanism includes a limiting beam arranged between the two parallel plates of the support plate, a socket arranged on the limiting beam, and a plug inserted in the socket, and the position of the socket matches the position of the handle on the chassis vehicle of the trolley-type circuit breaker to be repaired.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A trolley type circuit breaker maintenance device, comprising a flatbed trolley, characterized in that: The flatbed car is provided with a lifting mechanism, a support plate with a U-shaped cross section is provided at the upper end of the lifting mechanism, a pair of guide grooves for clamping the pulley of the circuit breaker chassis car are provided on the inner side surfaces of the two parallel plates of the support plate facing each other along the length direction, a front end support mechanism for providing a support point for the circuit breaker to be repaired is provided at the front end of the upper part of the flatbed car, a pulling mechanism for providing a pulling force for the circuit breaker to be repaired is provided at the rear end of the upper part of the flatbed car, and a control mechanism for coordinating and controlling the lifting mechanism, the front end support mechanism and the pulling mechanism is provided on the flatbed car; The front end support mechanism comprises a plurality of automatic telescopic rods vertically arranged at the front end of the upper part of the flatbed vehicle, and a U-shaped base is commonly arranged at the upper ends of the plurality of automatic telescopic rods, and a roller wheel for providing a front end rolling fulcrum for the circuit breaker to be repaired is rotatably arranged in the U-shaped base; The pulling mechanism includes a small winch arranged at the rear end of the upper part of the flatbed vehicle, a pulley bracket arranged at the upper part of the flatbed vehicle and located in front of the small winch, and a fixed pulley arranged on the pulley bracket, the rope on the small winch passes around the fixed pulley, and the free end of the rope on the small winch is provided with two hooks for hooking the handle of the chassis vehicle of the circuit breaker to be repaired; Auxiliary support mechanisms are provided on both sides of the front end of the flatbed truck, and the auxiliary support mechanism includes a platform provided on the left or right side of the front end of the flatbed truck, a threaded through hole is vertically provided on the platform, a threaded rod is connected to the threaded through hole, and a pad is ball-hinged at the bottom of the threaded rod; The pulley bracket is a pair of vertical plates symmetrically arranged on the front and rear sides of the flatbed truck. A pair of the vertical plates are vertically opened with multiple upward inclined grooves near one side of the small winch. The height of the fixed pulley can be adjusted by being arranged in inclined grooves at different heights.

2. A trolley type circuit breaker maintenance device according to claim 1, characterized in that: The lifting mechanism is an automatic lifting column arranged in the middle of the upper part of the flatbed vehicle, or two rows of automatic lifting columns arranged in parallel on the front and rear sides of the upper part of the flatbed vehicle.

3. A trolley type circuit breaker maintenance device according to claim 2, characterized in that: A vulcanized rubber pad is arranged at the bottom of the pad.

4. A trolley type circuit breaker maintenance device according to claim 3, characterized in that: The outer surface of the roller is provided with a vulcanized rubber layer.

5. A trolley type circuit breaker maintenance device according to claim 4, characterized in that: The control mechanism is a PLC single chip microcomputer or a microcomputer.

Images