Circuit breaker handcart applied to low-voltage complete equipment

Abstract

The utility model relates to the technical field of circuit breaker handcarts, in particular to a circuit breaker handcart applied to low-voltage complete equipment, which comprises a circuit breaker handcart body and a base, the circuit breaker handcart body is mounted on the upper portion of the base, and a driving device capable of driving the base to move is arranged on one side of the base. A through hole is formed in the middle of the driving device, the driving device comprises a rotating roller, the rotating roller is installed in the through hole through a bearing, a crank is slidably installed in the rotating roller, and a storage pipe capable of containing the crank is installed at the position, close to the side of the base, of the through hole of the driving device. A tooth groove is formed in the inner wall of the end, close to the storage pipe, of the rotating roller, the crank comprises a first section, a second section and a third section, the first section and the second section are connected through a hinge, the second section and the third section are connected through a hinge, and teeth capable of being matched with the tooth groove are arranged at the end, away from the second section, of the first section.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker trolley technology, specifically a circuit breaker trolley used in low-voltage complete sets of equipment. Background Technology

[0002] Circuit breaker trolleys are usually installed inside switch cabinets. When the circuit breaker trolley needs to be moved between the test position and the working position inside the switch cabinet, a crank is required. After inserting the crank into the operating hole at the bottom of the trolley, the crank is turned clockwise or counterclockwise to drive the lead screw at the bottom of the trolley to rotate, thereby pushing the trolley forward or backward on the guide rail to reach the designated position.

[0003] In some cases, the opening and closing operations of the circuit breaker trolley also need to be completed using a crank handle. By operating the crank handle, the internal mechanical mechanism of the circuit breaker can be driven to move, thereby closing or opening the circuit and controlling the circuit's continuity.

[0004] The existing circuit breaker trucks have the following problems:

[0005] 1. When the circuit breaker truck needs to be moved, the operator needs to carry the crank handle, which increases the workload. When pushing the circuit breaker truck in and out, the operator must first find and carry the crank handle, which not only wastes time but may also prevent quick operation in emergency situations.

[0006] 2. After operation, the crank handle needs to be properly stored to prevent loss or damage. In some work environments with limited space, storing the crank handle can be a challenge. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a circuit breaker trolley for use in low-voltage complete sets of equipment. By resetting the Z-shaped crank handle into a rod-shaped structure and then pushing the rod-shaped crank handle to re-insert it into the storage tube, the whole process is convenient and quick, and there is no need for the operator to carry the crank handle with them.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A circuit breaker trolley used in low-voltage switchgear includes a circuit breaker trolley body and a base. The circuit breaker trolley body is mounted on the upper part of the base. A drive device capable of moving the base is provided on one side of the base. A through hole is opened in the middle of the drive device. The drive device includes a rotating roller. The rotating roller is installed inside the through hole through a bearing. A crank is slidably installed inside the rotating roller. A receiving tube capable of accommodating the crank is installed at the through hole on the side of the drive device near the base. A toothed groove is opened on the inner wall of the rotating roller near the receiving tube. The crank includes a first segment, a second segment, and a third segment. The first segment and the second segment, as well as the second segment and the third segment, are all connected by hinges. The end of the first segment away from the second segment is provided with teeth that can be adapted to the toothed groove. The crank can drive the rotating roller to drive the drive device.

[0010] Preferably, the first, second, and third segments of the crank handle have the same diameter, and the diameter of the crank handle is adapted to the inner diameter of the storage tube.

[0011] Preferably, the drive device has mounting holes on both ends near the base, a threaded rod is installed in the mounting hole, the base has a threaded hole adapted to the threaded rod, a transmission belt connects the rotating roller and the threaded rod, and rollers are provided on both sides of the base.

[0012] Preferably, the third segment has an annular mounting groove, a sleeve is fitted onto the mounting groove, and a limit ring is provided at the end of the third segment away from the second segment.

[0013] Preferably, the drive device has limit devices at both ends, each limit device including a fixed plate mounted on both sides of the rotating roller. The drive device has pin holes at both ends, and the drive device has sliding grooves on both sides of the crank handle, with handles provided in the sliding grooves. An inner tube is provided on the side of the fixed plate away from the rotating roller, and an outer tube is fitted onto the inner tube. A mounting plate is provided on the end of the outer tube away from the fixed plate. An elastic element is provided inside the outer tube that can abut against the end of the inner tube and the side of the mounting plate. A limit pin that can pass through the pin hole is mounted on the mounting plate.

[0014] Preferably, both the rotating roller and the threaded rod are provided with transmission teeth, and the transmission belt is a chain that can be adapted to the transmission teeth.

[0015] Preferably, the receiving tube is detachably connected to the side of the driving device, and the third segment has a detachable mounting limit ring.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model has a simple structure. By pulling the third section outward, the second section of the crank can be pulled out, and the first section is driven into the rotating roller. This ensures that the teeth at the end of the first section can effectively mesh with the rotating roller. Since the first, second, and third sections are all connected by hinges, it is easy for the operator to bend the rod-shaped crank to form a Z-shaped structure. This allows the operator to drive the rotating roller to rotate using the Z-shaped crank. When the rotating roller rotates, it drives the drive device to work, thereby moving the base closer to or away from the drive device. After the work is completed, the operator can reset the Z-shaped crank back into a rod-shaped structure and then push the rod-shaped crank back into the storage tube. The whole process is convenient and quick, eliminating the need for the operator to carry the crank, reducing the operator's workload, ensuring that the circuit breaker trolley can be moved quickly in an emergency, and eliminating concerns about the storage of the crank, preventing loss or damage.

[0018] 2. The first section of the crank handle of this device is provided with teeth at its end, and the inner wall of the rotating roller is provided with a groove that matches the teeth. Therefore, the teeth and the groove can cooperate with each other, which not only ensures that the crank handle can effectively drive the rotating roller, but also prevents the first section from falling out of the rotating roller when the crank handle is pulled out of the storage tube, thus playing a certain limiting role. Since the end of the first section is provided with teeth, its end diameter is increased. Since the inner diameter of the storage tube is larger than the diameter of the crank handle, it is easy for the toothed end of the first section to be inserted into the storage tube, ensuring the practicality of this device.

[0019] 3. When the rotating roller is driven by the crank handle, the rotating roller can drive the threaded rod to rotate through the transmission belt. Since the base has a threaded groove that matches the threaded rod, the rotating rod can drive the base to move closer to or away from the driving device. The rollers set on both sides of the base can effectively reduce the friction between the base and the bottom of the cabinet when the base moves, ensuring the smoothness of the base movement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the internal structure of the base;

[0023] Figure 4 This is a schematic diagram of the internal structure of the drive unit;

[0024] Figure 5This is a cross-sectional view showing the connection between the crank handle and the rotating roller.

[0025] In the diagram: 1. Circuit breaker trolley body; 2. Base; 3. Drive unit; 4. Storage tube; 5. Handle; 6. First section; 7. Second section; 8. Third section; 9. Rotating roller; 10. Threaded rod; 11. Drive belt; 12. Roller; 13. Gear groove; 14. Tooth; 15. Sleeve; 16. Slide groove; 17. Handle; 18. Fixing plate; 19. Mounting plate; 20. Outer tube; 21. Limit pin; 22. Inner tube. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] A circuit breaker trolley used in low-voltage switchgear has the following structure: Figures 1-5 As shown, the circuit breaker trolley body 1 and base 2 are included. The circuit breaker trolley body 1 is mounted on the upper part of the base 2. A drive device 3 capable of moving the base 2 is provided on one side of the base 2. A through hole is provided in the middle of the drive device 3. The drive device 3 includes a rotating roller 9. The rotating roller 9 is installed inside the through hole through a bearing. A crank handle 5 is slidably installed inside the rotating roller 9. A receiving tube 4 capable of accommodating the crank handle 5 is installed at the through hole on the side of the drive device 3 near the base 2. A toothed groove 13 is provided on the inner wall of the rotating roller 9 near the receiving tube 4. The crank handle 5 includes a first segment 6, a second segment 7 and a third segment 8. The first segment 6 and the second segment 7, and the second segment 7 and the third segment 8 are all connected by hinges. The end of the first segment 6 away from the second segment 7 is provided with teeth 14 that can be adapted to the toothed groove 13. The crank handle 5 can drive the rotating roller 9 to drive the drive device 3 to work.

[0029] When it is necessary to move the circuit breaker trolley body 1, the first section 6, the second section 7, and the third section 8 of the crank handle 5 are aligned. The crank handle 5 is in a rod shape and stored inside the storage tube 4. The operator can pull out the second section 7 of the crank handle 5 by pulling the third section 8 outward, and cut the first section 6 into the rotating roller 9. This ensures that the teeth 14 at the end of the first section 6 can effectively mesh with the rotating roller 9. Since the first section 6, the second section 7, and the third section 8 are all connected by hinges, it is convenient for the operator to bend the rod-shaped crank handle 5 so that the first section 6, the second section 7, and the third section 8 form a Z-shaped structure. This allows the operator to drive the rotating roller 9 to rotate through the Z-shaped crank handle 5. When the rotating roller 9 rotates, it can drive the drive device 3 to work, thereby moving the base 2 closer to or away from the drive device 3.

[0030] After the work is completed, the operator can reset the Z-shaped crank handle 5 into a rod-shaped structure, and then push the rod-shaped crank handle 5 to insert it back into the storage tube 4. The whole process is convenient and quick, and the operator does not need to carry the crank handle 5 with him / her, which reduces the operator's workload and ensures that the circuit breaker trolley can be moved quickly in an emergency. At the same time, there is no need to worry about the storage of the crank handle 5, and to avoid the crank handle 5 being lost or damaged.

[0031] The first segment 6, the second segment 7, and the third segment 8 of the crank handle 5 all have the same diameter, and the diameter of the crank handle 5 is adapted to the inner diameter of the storage tube 4.

[0032] To facilitate the effective insertion of the crank handle 5 into the storage tube 4 after it reverts from the Z-shaped structure to a rod-shaped structure, the inner diameter of the storage tube 4 is larger than the diameters of the first segment 6, the second segment 7, and the third segment 8 of the crank handle 5. The inner diameter of the rotating roller 9 is adapted to the diameters of the first segment 6, the second segment 7, and the third segment 8, allowing the crank handle 5 to slide inside the rotating roller 9. The end of the first segment 6 of the crank handle 5 is provided with teeth 14, and one end of the inner wall of the rotating roller 9 is provided with a groove that matches the teeth 14. 13. Therefore, the teeth 14 and the grooves 13 can cooperate with each other, which not only ensures that the crank handle 5 can effectively drive the rotating roller 9, but also prevents the first section 6 from falling out of the rotating roller 9 when the crank handle 5 is pulled out of the storage tube 4, which can play a certain limiting role. Since the end of the first section 6 is provided with teeth 14, its end diameter becomes larger. Since the inner diameter of the storage tube 4 is larger than the diameter of the crank handle 5, it is convenient for the end of the first section 6 with teeth 14 to be inserted into the storage tube 4, ensuring the practicality of this device.

[0033] The drive device 3 has mounting holes on both ends near the base 2. A threaded rod 10 is installed in the mounting hole. The base 2 has a threaded hole that matches the threaded rod 10. A transmission belt 11 connects the rotating roller 9 and the threaded rod 10. Rollers 12 are provided on both sides of the base 2.

[0034] Since the threaded rod 10 is rotatably installed in the mounting holes at both ends of the drive device 3 and is connected to the rotating roller 9 through the transmission belt 11, when the operator drives the rotating roller 9 to rotate through the crank handle 5, the rotating roller 9 can drive the threaded rod 10 to rotate through the transmission belt 11. Since the base 2 has a threaded groove that matches the threaded rod 10, when the threaded rod 10 rotates, it can drive the base 2 to move closer to or away from the drive device 3. The rollers 12 set on both sides of the base 2 can effectively reduce the friction between the base 2 and the bottom of the cabinet when it moves, ensuring the smoothness of the base 2 when it moves.

[0035] The third segment 8 has an annular mounting groove, and a sleeve 15 is fitted onto the mounting groove. A limit ring is provided at the end of the third segment 8 away from the second segment 7.

[0036] Since the mounting groove of the third section 8 is fitted with a sleeve 15, when the operator shakes the handle 5, the operator's hand is conveniently placed on the sleeve 15 on the third section 8. The sleeve 15 can rotate in the mounting groove, which can prevent the operator's hand from rubbing when the handle 5 is rotated, and improve the operator's comfort when shaking the handle 5.

[0037] Both ends of the drive device 3 are provided with limiting devices. The limiting devices include a fixing plate 18, which is installed on both sides of the rotating roller 9. The two ends of the drive device 3 are provided with pin holes. Both sides of the crank handle 5 of the drive device 3 are provided with sliding grooves 16. A handle 17 is provided in the sliding groove 16. An inner tube 22 is provided on the side of the fixing plate 18 away from the rotating roller 9. An outer tube 20 is sleeved on the inner tube 22. An mounting plate 19 is provided on the end of the outer tube 20 away from the fixing plate 18. An elastic element is provided inside the outer tube 20 that can abut against the end of the inner tube 22 and the side of the mounting plate 19. A limiting pin 21 that can pass through the pin hole is installed on the mounting plate 19.

[0038] When the device is first installed into the switch cabinet, a limit hole is provided on the bottom inner side of the cabinet near the door. When the operator pushes the device into the cabinet, it can be pushed by the handle 17. When the drive device 3 approaches the door and needs to enter the cabinet, since the handle 17 is set in the slide groove 16, the operator can bring the two handles 17 together and drive the two outer tubes 20 to be fitted onto the two corresponding inner tubes 22 respectively. This ensures that the limit pins 21 on the mounting plates 19 at the ends of the two outer tubes 20 retract into the drive device 3 along the pin holes, making it easy for the drive device 3 to be pushed into the cabinet. After the push is completed, the operator releases the handle 17. Since the outer tubes 20 are provided with elastic elements, they can be driven away from the rotating roller 9, forcing the limit pins 21 on the mounting plates 19 to be inserted into the limit holes provided on the cabinet along the pin holes, so that the drive device 3 is fixedly connected to the cabinet, ensuring that the drive device 3 can effectively drive the base 2 to move inside the cabinet when it is working.

[0039] Both the rotating roller 9 and the threaded rod 10 are equipped with transmission teeth, and the transmission belt 11 is a chain that can be adapted to the transmission teeth. Through the cooperation of the transmission teeth and the chain, it can be ensured that the rotating roller 9 can effectively drive the threaded rod 10 to rotate, thus ensuring the practicality of this device.

[0040] Example 2

[0041] Based on Embodiment 1, the receiving tube 4 is detachably connected to the side of the driving device 3, and the third segment 8 has a detachable mounting limit ring.

[0042] When the crank handle 5 of this device needs to be replaced or repaired, the limiting ring on the third section 8 can be removed, and then the storage tube 4 can be separated from the side of the drive device 3. The crank handle 5 inside the storage tube 4 can then be taken out for replacement or repair. The limiting ring on the third section ensures that a part of the third section 8 always protrudes from the drive device 3 when the crank handle 5 is inserted into the storage tube 4, making it easy for the operator to quickly pull out the crank handle 5. Through the detachable connection, when the crank handle 5 needs to be repaired or replaced, the limiting ring can be quickly removed before the crank handle 5 can be repaired or replaced, further improving the practicality of this device.

[0043] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations, additions, subtractions, or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A circuit breaker trolley used in low-voltage switchgear, comprising a circuit breaker trolley body (1) and a base (2), wherein the circuit breaker trolley body (1) is mounted on the upper part of the base (2), characterized in that, A drive device (3) capable of moving the base (2) is provided on one side of the base (2). A through hole is provided in the middle of the drive device (3). The drive device (3) includes a rotating roller (9). The rotating roller (9) is installed inside the through hole through a bearing. A crank handle (5) is slidably installed inside the rotating roller (9). A storage tube (4) capable of accommodating the crank handle (5) is installed at the through hole on the side of the drive device (3) near the base (2). The rotating roller (9) is close to the storage tube (4). The inner wall at one end is provided with a toothed groove (13). The crank handle (5) includes a first segment (6), a second segment (7) and a third segment (8). The first segment (6) and the second segment (7) are connected by hinges, and the second segment (7) and the third segment (8) are connected by hinges. The end of the first segment (6) away from the second segment (7) is provided with teeth (14) that can be adapted to the toothed groove (13). The crank handle (5) can drive the rotating roller (9) to drive the drive device (3) to work.

2. The circuit breaker trolley used in low-voltage switchgear according to claim 1, characterized in that, The first segment (6), the second segment (7), and the third segment (8) of the crank handle (5) all have the same diameter, and the diameter of the crank handle (5) is adapted to the inner diameter of the storage tube (4).

3. A circuit breaker trolley used in low-voltage switchgear according to claim 1, characterized in that, The drive device (3) has mounting holes on both ends near the base (2), and a threaded rod (10) is installed in the mounting holes. The base (2) has threaded holes that are compatible with the threaded rod (10). A transmission belt (11) is connected between the rotating roller (9) and the threaded rod (10). Rollers (12) are provided on both sides of the base (2).

4. A circuit breaker trolley used in low-voltage switchgear according to claim 1, characterized in that, The third segment (8) has an annular mounting groove, and a sleeve (15) is fitted on the mounting groove. A limit ring is provided at the end of the third segment (8) away from the second segment (7).

5. A circuit breaker trolley used in low-voltage switchgear according to claim 1, characterized in that, The drive device (3) has a limiting device at both ends. The limiting device includes a fixing plate (18) which is installed on both sides of the rotating roller (9). The drive device (3) has pin holes at both ends. The drive device (3) has a sliding groove (16) on both sides of the crank handle (5). A handle (17) is provided in the sliding groove (16). An inner tube (22) is provided on the side of the fixing plate (18) away from the rotating roller (9). An outer tube (20) is sleeved on the inner tube (22). An mounting plate (19) is provided at the end of the outer tube (20) away from the fixing plate (18). An elastic element that can abut against the end of the inner tube (22) and the side of the mounting plate (19) is provided inside the outer tube (20). A limiting pin (21) that can pass through the pin hole is installed on the mounting plate (19).

6. A circuit breaker trolley used in low-voltage switchgear according to claim 3, characterized in that, Both the rotating roller (9) and the threaded rod (10) are provided with transmission teeth, and the transmission belt (11) is a chain that can be adapted to the transmission teeth.

7. A circuit breaker trolley used in low-voltage switchgear according to claim 4, characterized in that, The receiving tube (4) is detachably connected to the side of the driving device (3), and the third segment (8) has a detachable mounting limit ring.

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