Circuit breaker handcart

Abstract

The utility model discloses a breaker handcart, which comprises a height adjusting mechanism and a guide mechanism, the height adjusting mechanism is provided with a fixed end and a movable end capable of moving up and down relative to the fixed end, and a plurality of rollers are arranged below the fixed end; and the guide mechanism comprises a guide plate, the guide plate is fixed at the movable end, and the guide plate is used for allowing the circuit breaker to slide. The circuit breaker handcart provided by the utility model has the beneficial effects that the height of the guide plate is adjusted through the height adjusting mechanism, so that the height of the guide plate can be flush with the height of the inner bottom surface of the case, a circuit breaker on the guide plate can be conveniently pushed into the case, the labor intensity of workers is reduced, and the working efficiency is improved. And meanwhile, the circuit breaker can be accurately mounted at a preset position in the case.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker assembly technology, specifically to a circuit breaker trolley. Background Technology

[0002] Circuit breakers are essential protective devices in power systems. A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. They can be classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application range. The distinction between high and low voltage is somewhat blurred; generally, circuit breakers above 3kV are considered high-voltage electrical appliances. The main functions of a circuit breaker are to disconnect and connect load circuits, as well as to disconnect faulty circuits, prevent the escalation of accidents, and ensure safe operation.

[0003] When assembling a circuit breaker, it needs to be installed into the chassis. The specific method is to first open the side cover of the chassis, then put the circuit breaker into the chassis, and then close the side cover. Since many types of circuit breakers are quite heavy, it is very difficult to put the circuit breaker into the chassis, which is labor-intensive for workers and also makes it difficult to accurately install the circuit breaker into the intended position. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a circuit breaker trolley to solve the technical problems in the prior art where it is very laborious to put the circuit breaker into the chassis, the labor intensity of workers is high, and it is not easy to accurately install the circuit breaker into the predetermined position.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a circuit breaker trolley, comprising:

[0007] A height adjustment mechanism having a fixed end and a movable end that can move up and down relative to the fixed end, wherein a plurality of rollers are mounted below the fixed end; and,

[0008] A guiding mechanism, comprising a guide plate fixed to the movable end, the guide plate being used for sliding of the circuit breaker.

[0009] In some embodiments, the height adjusting mechanism comprises a lower frame, an upper frame, a lower fixing member, a lower sliding member, an upper fixing member, an upper sliding member, a first fork arm, a second fork arm and a telescopic member, the lower frame and the upper frame are arranged in parallel, the lower fixing member is fixed to one end of the lower frame, the lower sliding member is slidingly arranged at the other end of the lower frame, the upper fixing member is fixed to one end of the upper frame, the upper sliding member is slidingly arranged at the other end of the upper frame, the lower end of the first fork arm is hingedly connected to the lower fixing member, the upper end of the first fork arm is hingedly connected to the upper sliding member, the center of the second fork arm is hingedly connected to the center of the first fork arm, the lower end of the second fork arm is hingedly connected to the lower sliding member, the upper end of the second fork arm is hingedly connected to the upper fixing member, one end of the telescopic member is hingedly connected to the lower connecting plate, the other end of the telescopic member is hingedly connected to the fixed rod.

[0010] In some embodiments, the lower frame comprises two parallel lower rails and a lower connecting plate, the two ends of the lower connecting plate are respectively fixed to the two lower rails, the upper frame comprises two parallel upper rails and an upper connecting plate, the two ends of the upper connecting plate are respectively fixed to the two upper rails, the lower fixing member comprises two lower fixing blocks, the two lower fixing blocks are respectively fixed to one end of the two lower rails, the upper fixing member comprises two upper fixing blocks, the two upper fixing blocks are respectively fixed to one end of the two upper rails, the lower sliding member comprises two lower sliding blocks and a lower round rod, the two lower sliding blocks are respectively slidingly arranged at the other end of the two lower rails, the two ends of the lower round rod are respectively fixed to the two lower sliding blocks, the upper sliding member comprises two upper sliding blocks and an upper round rod, the two upper sliding blocks are respectively slidingly arranged at the other end of the two upper rails, the two ends of the upper round rod are respectively fixed to the two upper sliding blocks, the first fork arm comprises two first inclined rods and a fixed rod, the two ends of the fixed rod are respectively fixedly connected to the two first inclined rods, the lower ends of the two first inclined rods are respectively hingedly connected to the two lower fixing blocks, the upper ends of the two first inclined rods are hingedly connected to the upper round rod, the second fork arm comprises two second inclined rods, the upper ends of the two second inclined rods are respectively hingedly connected to the two upper fixing blocks, the lower ends of the two second inclined rods are hingedly connected to the lower round rod, one end of the telescopic member is hingedly connected to the lower connecting plate, the other end of the telescopic member is hingedly connected to the fixed rod.

[0011] In some embodiments, the telescopic member is a foot-operated jack, the fixed end of the foot-operated jack is hingedly connected to the lower connecting plate, the movable end of the foot-operated jack is hingedly connected to the fixed rod.

[0012] In some embodiments, the height adjusting mechanism further comprises an intermediate rod, the intermediate rod passes through the centers of the two first inclined rods and the two second inclined rods respectively.

[0013] In some embodiments, the height adjusting mechanism further comprises a handrail fixed to the upper frame.

[0014] In some embodiments, the handrail is provided with a plurality of anti-skid grooves.

[0015] In some embodiments, the guide plate is fixed above the upper frame via a plurality of connecting members.

[0016] In some embodiments, the upper frame is provided with a plurality of through holes corresponding to the connecting members respectively; the connecting member comprises a screw rod, an upper nut and a lower nut, one end of the screw rod is fixed to the guide plate, the screw rod passes through the through hole, the upper nut and the lower nut are threadedly sleeved on the screw rod, and the upper nut and the lower nut are respectively in abutment with the upper end surface and the lower end surface of the upper frame.

[0017] In some embodiments, the guide mechanism further comprises two side baffles fixed to the two sides of the guide plate respectively.

[0018] Compared with the prior art, the circuit breaker handcart has the beneficial effects that: in use, first, the height of the movable end of the height adjusting mechanism is adjusted to a lower state, then the circuit breaker is carried to the guide plate, then the height adjusting mechanism is pushed to reach the vicinity of the side cover of the case, then the side cover of the case is opened, then the height of the movable end of the height adjusting mechanism is adjusted to a higher state, so that the height of the guide plate is flush with the height of the inner bottom surface of the case, then the circuit breaker on the guide plate is pushed into the case, thereby realizing the assembly of the circuit breaker, the height of the guide plate can be flush with the height of the inner bottom surface of the case through the height adjusting mechanism, so that the circuit breaker on the guide plate is conveniently pushed into the case, the labor intensity of workers is reduced, and the circuit breaker is also accurately installed to the predetermined position in the case. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective structural schematic view of the circuit breaker handcart according to an embodiment of the utility model;

[0020] Figure 2 is Figure 1 is a perspective structural schematic view of the circuit breaker handcart without the guide plate in

[0021] Figure 3 is Figure 2 is the front view of

[0022] Figure 4 is Figure 3 is the local enlarged view of the area A in

[0023] Explanation of reference signs: 1-height adjusting mechanism, 11-lower frame, 111-lower guide rail, 112-lower connecting plate, 12-upper frame, 121-upper guide rail, 122-upper connecting plate, 123-handrail, 1231-anti-skid groove, 13-lower fixing part, 131-lower fixing block, 14-lower sliding part, 141-lower sliding block, 142-lower round rod, 15-upper fixing part, 151-upper fixing block, 16-upper sliding part, 161-upper sliding block, 162-upper round rod, 17-first fork arm, 171-first inclined rod, 172-fixing rod, 18-second fork arm, 181-second inclined rod, 19-telescopic part, 191-step, 110-intermediate rod, 101-roller, 2-guiding mechanism, 21-guiding plate, 22-connecting part, 221-screw rod, 222-upper nut, 223-lower nut, 23-side baffle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0025] In order to solve the technical problem that it is very laborious to put the circuit breaker into the cabinet, the labor intensity of workers is large, and it is also not easy to accurately install the circuit breaker to the predetermined position, the utility model provides a circuit breaker handcart, which can conveniently put the circuit breaker into the cabinet.

[0026] It should be noted that the circuit breaker handcart described in the utility model is used for but not limited to circuit breaker assembly. In order to facilitate the description, in the utility model, only the circuit breaker handcart applied to the circuit breaker assembly is taken as an example for description, and the principle of the circuit breaker handcart applied to the assembly of other types of equipment is substantially the same as that applied to the circuit breaker assembly, which is not described one by one here.

[0027] Please refer to Figure 1 , Figure 1 It is a three-dimensional structure schematic view of the circuit breaker handcart in an embodiment of the utility model, and the circuit breaker handcart comprises a height adjusting mechanism 1 and a guiding mechanism 2.

[0028] The height adjusting mechanism 1 has a fixed end and a movable end which can move up and down relative to the fixed end, a plurality of rollers 101 are installed below the fixed end, preferably, the rollers 101 are rollers with brakes; the guiding mechanism 2 comprises a guiding plate 21, the guiding plate 21 is fixed to the movable end, and the guiding plate 21 is used for sliding the circuit breaker.

[0029] In use, first, the height of the movable end of the height adjusting mechanism 1 is adjusted to a lower state, then the circuit breaker is carried to the guide plate 21, then the height adjusting mechanism 1 is pushed to reach the vicinity of the side cover of the cabinet, then the side cover of the cabinet is opened, then the height of the movable end of the height adjusting mechanism 1 is adjusted to a higher state, so that the height of the guide plate 21 is flush with the height of the bottom surface in the cabinet, then the circuit breaker on the guide plate 21 is pushed into the cabinet, thereby realizing the assembly of the circuit breaker. The height of the guide plate 21 can be flush with the height of the bottom surface in the cabinet through the height adjusting mechanism, so that the circuit breaker on the guide plate 21 can be conveniently pushed into the cabinet, thereby reducing the labor intensity of workers. Meanwhile, before pushing the circuit breaker, the position of the circuit breaker relative to the cabinet can be adjusted by moving the whole handcart, so that the circuit breaker is pre-aligned with the mounting position in the cabinet, thereby helping to accurately install the circuit breaker to the predetermined position in the cabinet.

[0030] In one embodiment, referring to Figures 1-3 , the height adjusting mechanism 1 comprises a lower frame 11, an upper frame 12, a lower fixing part 13, a lower sliding part 14, an upper fixing part 15, an upper sliding part 16, a first fork arm 17, a second fork arm 18 and a telescopic part 19. The lower frame 11 and the upper frame 12 are arranged in parallel. The lower fixing part 13 is fixed to one end of the lower frame 11. The lower sliding part 14 is slidingly arranged at the other end of the lower frame 11. The upper fixing part 15 is fixed to one end of the upper frame 12. The upper sliding part 16 is slidingly arranged at the other end of the upper frame 12. The lower end of the first fork arm 17 is hingedly connected to the lower fixing part 13. The upper end of the first fork arm 17 is hingedly connected to the upper sliding part 16. The center of the second fork arm 18 is hingedly connected to the center of the first fork arm 17. The lower end of the second fork arm 18 is hingedly connected to the lower sliding part 14. The upper end of the second fork arm 18 is hingedly connected to the upper fixing part 15. One end of the telescopic part 19 is hingedly connected to the lower frame 11. The other end of the telescopic part 19 is hingedly connected to the first fork arm 17.

[0031] In this embodiment, in use, when the length of the telescopic part 19 increases, the first fork arm 17 is pushed to rotate upward, and when the first fork arm 17 rotates upward, the second fork arm 18 is driven to rotate upward, so that the lower sliding part 14 and the upper sliding part 16 move synchronously in the direction of approaching the lower fixing part 13 and the upper fixing part 15, and the height of the upper frame 12 increases, thereby increasing the height of the guide plate 21. Conversely, when the length of the telescopic part 19 decreases, the height of the upper frame 12 decreases, thereby decreasing the height of the guide plate 21.

[0032] Specifically, the telescopic part 19 can be a telescopic cylinder, a telescopic hydraulic cylinder or other device with length adjusting function.

[0033] In one of the embodiments, please refer to Figures 1-3 The lower frame 11 comprises two parallel lower rails 111 and a lower connecting plate 112, two ends of the lower connecting plate 112 are fixed to the two lower rails 111 respectively, the upper frame 12 comprises two parallel upper rails 121 and an upper connecting plate 122, two ends of the upper connecting plate 122 are fixed to the two upper rails 121 respectively, the lower fixing part 13 comprises two lower fixing blocks 131, the two lower fixing blocks 131 are fixed to one end of the two lower rails 111 respectively, the upper fixing part 15 comprises two upper fixing blocks 151, the two upper fixing blocks 151 are fixed to one end of the two upper rails 121 respectively, the lower sliding part 14 comprises two lower sliding blocks 141 and a lower round rod 142, the two lower sliding blocks 141 are slidingly arranged at the other end of the two lower rails 111 respectively, two ends of the lower round rod 142 are fixed to the two lower sliding blocks 141 respectively, the upper sliding part 16 comprises two upper sliding blocks 161 and an upper round rod 162, the two upper sliding blocks 161 are slidingly arranged at the other end of the two upper rails 121 respectively, two ends of the upper round rod 162 are fixed to the two upper sliding blocks 161 respectively, the first fork arm 17 comprises two first inclined rods 171 and a fixed rod 172, two ends of the fixed rod 172 are fixedly connected with the two first inclined rods 171 respectively, lower ends of the two first inclined rods 171 are hingedly connected with the two lower fixing blocks 131 respectively, upper ends of the two first inclined rods 171 are hingedly connected with the upper round rod 162, the second fork arm 18 comprises two second inclined rods 181, upper ends of the two second inclined rods 181 are hingedly connected with the two upper fixing blocks 151 respectively, lower ends of the two second inclined rods 181 are hingedly connected with the lower round rod 142, one end of the telescopic part 19 is hingedly connected with the lower connecting plate 112, the other end of the telescopic part 19 is hingedly connected with the fixed rod 172. The above design can improve the stability of the height adjusting mechanism 1.

[0034] In one of the embodiments, please refer to Figures 1-3 The telescopic part 19 is a foot-operated jack, a fixed end of the foot-operated jack is hingedly connected with the lower connecting plate 112, a movable end of the foot-operated jack is hingedly connected with the fixed rod 172. The foot-operated jack can facilitate the adjustment of the length of the telescopic part 19.

[0035] In one of the embodiments, please refer to Figures 1-3 The height adjusting mechanism 1 further comprises an intermediate rod 110, the intermediate rod 110 passes through the centers of the two first inclined rods 171 and the two second inclined rods 181 respectively, so that the hingedly connection of the first inclined rods 171 and the second inclined rods 181 can be realized.

[0036] In one of the embodiments, please refer toFigures 1-3 The height adjustment mechanism also includes a handrail 123, which is fixed to the upper frame 12, facilitating the movement of the entire vehicle body. The foot pedal 191 of the foot-operated jack is located below the handrail for easy use.

[0037] In one embodiment, please refer to Figure 1 and Figure 2 The handrail 123 is provided with several anti-slip grooves 1231 to prevent slipping.

[0038] In one embodiment, please refer to Figure 3 and Figure 4 The guide plate 21 is fixed above the upper frame 12 via several connectors 22. Specifically, the upper frame 12 has several through holes corresponding to each connector 22. Each connector 22 includes a screw 221, an upper nut 222, and a lower nut 223. One end of the screw 221 is fixed to the guide plate 21, and the screw 221 passes through the through hole. The upper nut 222 and the lower nut 223 are threaded onto the screw 221, and the upper nut 222 and the lower nut 223 abut against the upper and lower end faces of the upper frame 12, respectively, thereby achieving a fixed connection between the guide plate 21 and the screw 221.

[0039] In one embodiment, please refer to Figure 3 and Figure 4 The guide mechanism 2 also includes two side baffles 23, which are fixed to both sides of the guide plate 21, thereby limiting the sliding of the circuit breaker on the guide plate 21.

[0040] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below: In use, firstly, the height of the movable end of the height adjustment mechanism 1 is adjusted to a lower state. Then, the circuit breaker is moved onto the guide plate 21. Next, the height adjustment mechanism 1 is pushed so that it reaches the vicinity of the side cover of the chassis. Then, the side cover of the chassis is opened, and the height of the movable end of the height adjustment mechanism 1 is adjusted to a higher state so that the height of the guide plate 21 is flush with the height of the bottom surface inside the chassis. Then, the circuit breaker on the guide plate 21 is pushed into the chassis, thereby realizing the assembly of the circuit breaker. This utility model adjusts the height of the guide plate 21 through the height adjustment mechanism, so that the height of the guide plate 21 can be flush with the height of the bottom surface inside the chassis, thereby facilitating the pushing of the circuit breaker on the guide plate 21 into the chassis and reducing the labor intensity of workers. At the same time, before pushing the circuit breaker, the position of the circuit breaker relative to the chassis can be adjusted by moving the entire handcart, so that the circuit breaker is pre-aligned with the installation position inside the chassis, thereby helping to accurately install the circuit breaker into the predetermined position inside the chassis.

[0041] The specific embodiments of the present application described above do not constitute a limitation of the protection scope of the present application. Any other corresponding changes and modifications made according to the technical concept of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A circuit breaker truck characterized by, The utility model relates to a height-adjustable circuit breaker, comprising: a height-adjusting mechanism having a fixed end and a movable end that can move up and down relative to the fixed end, the fixed end being provided with a plurality of rollers below; and a guiding mechanism comprising a guiding plate fixed to the movable end, the guiding plate being used for sliding of the circuit breaker; the height-adjusting mechanism comprising a lower frame, an upper frame, a lower fixing member, a lower sliding member, an upper fixing member, an upper sliding member, a first fork arm, a second fork arm and an extension member, the lower frame and the upper frame being arranged in parallel, the lower fixing member being fixed to one end of the lower frame, the lower sliding member being slidingly arranged at the other end of the lower frame, the upper fixing member being fixed to one end of the upper frame, the upper sliding member being slidingly arranged at the other end of the upper frame, the lower end of the first fork arm being hingedly connected to the lower fixing member, the upper end of the first fork arm being hingedly connected to the upper sliding member, the center of the second fork arm being hingedly connected to the center of the first fork arm, the lower end of the second fork arm being hingedly connected to the lower sliding member, the upper end of the second fork arm being hingedly connected to the upper fixing member, one end of the extension member being hingedly connected to the lower frame, the other end of the extension member being hingedly connected to the first fork arm; the guiding plate being fixed above the upper frame via a plurality of connecting members, a plurality of through holes corresponding to the connecting members being formed in the upper frame; the connecting members comprising a screw rod, an upper nut and a lower nut, one end of the screw rod being fixed to the guiding plate, the screw rod passing through the through holes, the upper nut and the lower nut being threadedly sleeved on the screw rod, the upper nut and the lower nut being respectively abutted against the upper end surface and the lower end surface of the upper frame.

2. The circuit breaker truck of claim 1, wherein, The lower frame comprises two parallel lower rails and a lower connecting plate, two ends of the lower connecting plate are fixed to the two lower rails respectively, the upper frame comprises two parallel upper rails and an upper connecting plate, two ends of the upper connecting plate are fixed to the two upper rails respectively, the lower fixing member comprises two lower fixing blocks, the two lower fixing blocks are fixed to one end of the two lower rails respectively, the upper fixing member comprises two upper fixing blocks, the two upper fixing blocks are fixed to one end of the two upper rails respectively, the lower sliding member comprises two lower sliding blocks and a lower round rod, the two lower sliding blocks are slidingly arranged at the other ends of the two lower rails respectively, two ends of the lower round rod are fixed to the two lower sliding blocks respectively, the upper sliding member comprises two upper sliding blocks and an upper round rod, the two upper sliding blocks are slidingly arranged at the other ends of the two upper rails respectively, two ends of the upper round rod are fixed to the two upper sliding blocks respectively, the first fork arm comprises two first inclined rods and a fixed rod, two ends of the fixed rod are fixedly connected with the two first inclined rods respectively, lower ends of the two first inclined rods are hingedly connected with the two lower fixing blocks respectively, upper ends of the two first inclined rods are hingedly connected with the upper round rod, the second fork arm comprises two second inclined rods, upper ends of the two second inclined rods are hingedly connected with the two upper fixing blocks respectively, lower ends of the two second inclined rods are hingedly connected with the lower round rod, one end of the telescopic member is hingedly connected with the lower connecting plate, the other end of the telescopic member is hingedly connected with the fixed rod.

3. The circuit breaker truck of claim 2, wherein, The telescopic member is a foot-pedal type jack, a fixed end of the foot-pedal type jack is hingedly connected with the lower connecting plate, a movable end of the foot-pedal type jack is hingedly connected with the fixed rod.

4. The circuit breaker truck of claim 2, wherein, The height adjusting mechanism further comprises an intermediate rod, the intermediate rod passes through the centers of the two first inclined rods and the two second inclined rods respectively.

5. The circuit breaker truck of claim 1, wherein, The height adjusting mechanism further comprises a handrail, the handrail is fixed to the upper frame.

6. The circuit breaker truck of claim 5, wherein, A plurality of anti-skid grooves are formed in the handrail.

7. The circuit breaker truck of claim 1, wherein, The guide mechanism further comprises two side baffles, the two side baffles are fixed to the two sides of the guide plate respectively. The height adjusting mechanism further comprises a handrail, the handrail is fixed to the upper frame.

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