A frequency converter copper bar connecting and fixing device

Abstract

The utility model relates to the technical field of frequency converter copper bar, specifically relates to a kind of frequency converter copper bar connecting fixing device, including bottom plate, and the connecting copper bar is equipped in bottom plate upper end, and two symmetrical connecting seats are fixedly connected in bottom plate upper end, and threaded hole is gouged in connecting seat upper end, and U-shaped connecting plate is equipped in connecting seat upper end, and screw rod is threadedly connected in U-shaped connecting plate upper end, and screw rod is located in threaded hole and is threadedly connected with threaded hole, and connecting copper bar is located between two U-shaped connecting plates, and connecting copper bar includes two side plates in U-shaped connecting plate, and connecting plate is equipped between two side plates, and U-shaped groove is gouged in side plate upper end, and L-shaped connecting plate is fixedly connected in the end of two side plates mutually close, and bottom contact plate is fixedly connected in L-shaped connecting plate outer end, can be realized when replacing connecting copper bar, screw rod is not needed to be unloaded, and the structure in connecting copper bar can be replaced by screw rod loosening, improve the work efficiency of technical personnel.

Description

Technical Field

[0001] This utility model relates to the field of inverter copper busbar technology, specifically an inverter copper busbar connection and fixing device. Background Technology

[0002] In the field of power electronics, frequency converters, as devices that can change the frequency and voltage of power supplies, are widely used in many industries such as industrial production, transportation, and home appliances. By adjusting the operating frequency and voltage of the motor, they can achieve precise control of the motor speed and torque, thereby achieving the goals of energy saving, improving production efficiency, and improving product quality. As an important conductive component in frequency converters, copper busbars undertake the key task of transmitting large currents, and the reliability and stability of their connection directly affect the performance and safety of frequency converters.

[0003] Currently, although some improved copper busbar connection and fixing devices have appeared on the market, most of them still have problems such as complex structure, high cost, and inconvenient operation. For example, some devices use complex snap-fit ​​structures or hydraulic devices to fix the copper busbars. Although this improves the stability of the connection to a certain extent, it increases the manufacturing cost and maintenance difficulty of the device, which is not conducive to large-scale promotion and application.

[0004] Therefore, a copper busbar connection and fixing device for frequency converters is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a frequency converter copper busbar connection and fixing device, which allows for the replacement of a specific structure within the copper busbar without removing the screw. This improves the work efficiency of technicians.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a frequency converter copper busbar connection and fixing device, comprising a base plate, a connecting copper busbar on the upper end of the base plate, two mutually symmetrical connecting seats fixedly connected to the upper end of the base plate, threaded holes drilled on the upper end of the connecting seats, a U-shaped connecting plate on the upper end of the connecting seats, a screw threadedly connected to the upper end of the U-shaped connecting plate, the screw located in the threaded hole and threadedly connected to the threaded hole, the connecting copper busbar located between the two U-shaped connecting plates, the connecting copper busbar including two side plates located within the U-shaped connecting plates, a connecting plate between the two side plates, the upper end of the side plates being... The two side plates are chiseled with U-shaped grooves, and L-shaped connecting plates are fixedly connected to the ends of the two side plates that are close to each other. A bottom contact plate is fixedly connected to the outer end of the L-shaped connecting plate. Contact springs are fixedly connected to the ends of the L-shaped connecting plate and the bottom contact plate that are close to each other. Two arc-shaped slots matching the contact springs are chiseled at the upper and lower ends of the connecting plate. Two symmetrical support blocks are fixedly connected to the upper end of the bottom plate. The support blocks are located directly below the bottom contact plate. This design allows for the replacement of a specific structure in the connecting copper busbar without removing the screw. The screw can be loosened to replace the busbar, thus improving the work efficiency of technicians.

[0007] Preferably, an elastic washer is fixedly connected to the upper end of the connector. The elastic washer is located outside the threaded hole and is made of rubber. By setting the elastic washer, the U-shaped connecting plate is less likely to be excessively squeezed when it contacts the connector, thus preventing damage to the connector and improving its service life.

[0008] Preferably, the upper end of the screw is chiseled with an adjustment groove, the cross-section of which is a regular hexagon. By setting the adjustment groove, technicians can easily adjust the screw with a wrench, thereby improving the efficiency of technicians in installing, disassembling and connecting copper busbars.

[0009] Preferably, a washer is fitted on the outer end of the screw, and the washer is located on the upper side of the U-shaped connecting plate. By setting the washer, the possibility of the screw contacting the U-shaped connecting plate during rotation and damaging the U-shaped connecting plate can be reduced, thereby improving the service life of the U-shaped connecting plate.

[0010] Preferably, a polished layer is provided at the contact point between the U-shaped connecting plate and the side plate. By providing a polished layer, the U-shaped connecting plate can be inserted into the side plate more smoothly, thereby improving the work efficiency of technicians.

[0011] Preferably, both the bottom contact plate and the contact spring are made of elastic metal material, and the surface of the contact spring is smooth. By using elastic metal material to make the bottom contact plate and the contact spring, when the connecting plate moves along the L-shaped connecting plate, the contact spring can be inserted into the arc-shaped slot, thereby locking the connecting plate.

[0012] Preferably, the upper end of the support block is chiseled with a strip groove, and the bottom end of the bottom contact plate is fixedly connected with a locking block that matches the strip groove. By setting the locking block and the strip groove, after the U-shaped connecting plate is threadedly assembled with the connecting seat, the support block abuts against the bottom contact plate, and the locking block is locked into the strip groove, making the connection copper busbar more stably locked.

[0013] Compared with the prior art, this utility model provides a copper busbar connection and fixing device for frequency converters, which has the following advantages:

[0014] 1. When replacing the connecting copper busbar, this device does not require removing the screw. Simply loosen the screw to detach the bottom contact plate and the L-shaped connecting plate. This allows technicians to easily replace the side plate or connecting plate according to the actual damage. This design greatly simplifies the replacement process, saves operation time, significantly improves the work efficiency of technicians, and reduces maintenance costs.

[0015] 2. The elastic washer at the upper end of the connector of this device is made of rubber material, which can play a buffering role when the U-shaped connecting plate contacts the connector, avoiding excessive compression and damage to the connector, and extending its service life. At the same time, the washer at the outer end of the screw can reduce contact damage with the U-shaped connecting plate during rotation, further improving the overall durability of the device and ensuring long-term stable operation.

[0016] 3. The bottom contact plate and contact spring of this device are made of elastic metal material. The surface of the contact spring is smooth. When the connecting plate moves along the L-shaped connecting plate, the contact spring can be smoothly inserted into the arc-shaped slot to lock the connecting plate. Moreover, the strip groove on the support block matches the locking block at the bottom of the bottom contact plate. After the U-shaped connecting plate and the connecting seat are threaded together, the copper busbar is locked more stably, effectively preventing loosening. Attached Figure Description

[0017] Figure 1 This is a perspective view of the entire utility model;

[0018] Figure 2 This is a perspective view of the base plate portion of this utility model;

[0019] Figure 3 This is a perspective view of the connecting plate portion of this utility model;

[0020] Figure 4 This is a perspective view of the U-shaped connecting plate portion of this utility model;

[0021] Figure 5 This is a perspective view of the side plate and U-shaped connecting plate of this utility model;

[0022] Figure 6 This is a perspective view of the L-shaped connecting plate portion of this utility model.

[0023] In the diagram: 1. Base plate; 2. Connecting plate; 3. Connecting seat; 301. Elastic washer; 4. Threaded hole; 5. U-shaped connecting plate; 6. Screw; 601. Adjusting groove; 602. Shim; 7. Side plate; 8. U-shaped groove; 9. L-shaped connecting plate; 10. Bottom contact plate; 1001. Locking block; 11. Contact spring; 12. Arc-shaped locking groove; 13. Support block; 1301. Strip groove. Detailed Implementation

[0024] 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.

[0025] Example:

[0026] Please see Figure 1 - Figure 6 This embodiment of a frequency converter copper busbar connection and fixing device includes a base plate 1. A connecting copper busbar is provided on the upper end of the base plate 1. Two symmetrical connecting seats 3 are fixedly connected to the upper end of the base plate 1. Threaded holes 4 are drilled on the upper end of each connecting seat 3. A U-shaped connecting plate 5 is provided on the upper end of each connecting seat 3. A screw 6 is threadedly connected to the upper end of the U-shaped connecting plate 5. The screw 6 is located inside and threadedly connected to the threaded hole 4. The connecting copper busbar is located between the two U-shaped connecting plates 5. The connecting copper busbar includes two side plates 7 located within the U-shaped connecting plates 5. A connecting plate 2 is provided between the two side plates 7. A U-shaped groove 8 is drilled on the upper end of each side plate 7. The two side plates 7 are mutually connected. An L-shaped connecting plate 9 is fixedly connected to one end of each connecting plate 2. A bottom contact plate 10 is fixedly connected to the outer end of the L-shaped connecting plate 9. Contact springs 11 are fixedly connected to the close ends of the L-shaped connecting plate 9 and the bottom contact plate 10. Two arc-shaped slots 12 matching the contact springs 11 are cut at both the upper and lower ends of the connecting plate 2. Two symmetrical support blocks 13 are fixedly connected to the upper end of the bottom plate 1. The support blocks 13 are located directly below the bottom contact plate 10. This allows for the replacement of a specific structure in the connecting copper busbar without removing the screw. The screw can be loosened to replace the structure, thus improving the work efficiency of technicians.

[0027] The contact spring 11 has a certain elasticity and can deform when subjected to external force and return to its original shape after the external force disappears. The upper and lower ends of the connecting plate 2 are both chiseled with two arc-shaped slots 12 that match the contact spring 11. When the connecting plate 2 is placed between the L-shaped connecting plate 9 and the bottom contact plate 10, the contact spring 11 will be inserted into the arc-shaped slot 12 to achieve the initial positioning and locking of the connecting plate 2 and prevent the connecting plate 2 from moving in the horizontal direction.

[0028] When installing the connecting copper busbar, the technician first places the connecting plate 2 between the L-shaped connecting plate 9 and the bottom contact plate 10, so that the contact spring 11 is engaged in the arc-shaped slot 12, completing the initial positioning of the connecting plate 2; then, the side plate 7 is placed into the U-shaped connecting plate 5, so that the screw 6 passes through the U-shaped groove 8, and then the screw 6 is rotated, and the screw 6 moves downward in the threaded hole 4, pushing the U-shaped connecting plate 5 downward until the U-shaped connecting plate 5 and the connecting seat 3 are pressed together; during this process, the support block 13 is in full contact with the bottom contact plate 10, and with the elasticity of the bottom contact plate 10 and the engagement of the contact spring 11 and the arc-shaped slot 12, the bottom contact plate 10 and the L-shaped connecting plate 9 clamp the connecting plate 2 tightly, realizing the stable installation of the connecting copper busbar.

[0029] Please see Figure 2 and Figure 4 An elastic washer 301 is fixedly connected to the upper end of the connecting seat 3. The elastic washer 301 is located outside the threaded hole 4. The elastic washer 301 is made of rubber material. By setting the elastic washer 301, the U-shaped connecting plate 5 is not easily over-compressed when it comes into contact with the connecting seat 3, which would damage the connecting seat 3, thereby improving the service life of the connecting seat 3. An adjustment groove 601 is chiseled at the upper end of the screw 6. The cross-section of the adjustment groove 601 is a regular hexagon. By setting the adjustment groove 601, technicians can easily adjust the screw 6 with a wrench, thereby improving the efficiency of technicians in installing and disassembling the connecting copper busbar. A washer 602 is sleeved on the outer end of the screw 6. The washer 602 is located on the upper side of the U-shaped connecting plate 5. By setting the washer 602, the possibility of the screw 6 contacting the U-shaped connecting plate 5 and damaging the U-shaped connecting plate 5 when rotating can be reduced, thereby improving the service life of the U-shaped connecting plate 5.

[0030] Please see Figure 4-6 A polished layer is provided at the contact point between the U-shaped connecting plate 5 and the side plate 7. This polishing layer allows the U-shaped connecting plate 5 to be inserted more smoothly into the side plate 7, thereby improving the work efficiency of technicians. Both the bottom contact plate 10 and the contact spring 11 are made of elastic metal material. The surface of the contact spring 11 is smooth. By using elastic metal material for the bottom contact plate 10 and the contact spring 11, the contact spring 11 can be engaged when the connecting plate 2 moves along the L-shaped connecting plate 9. The arc-shaped groove 12 is used to lock the connecting plate 2. The upper end of the support block 13 has a strip groove 1301. The bottom contact plate 10 is fixedly connected to a locking block 1001 that matches the strip groove 1301. By setting the locking block 1001 and the strip groove 1301, after the U-shaped connecting plate 5 is threadedly assembled with the connecting seat 3, the support block 13 abuts against the bottom contact plate 10, and the locking block 1001 is locked into the strip groove 1301, making the connection copper busbar more stably locked.

[0031] The working principle of the above embodiments is as follows:

[0032] In use, the technician places the connecting plate 2 between the L-shaped connecting plate 9 and the bottom contact plate 10, so that the contact spring 11 is engaged in the arc-shaped slot 12. Then, the side plate 7 is placed into the U-shaped connecting plate 5, so that the screw 6 passes through the U-shaped slot 8. Rotating the screw 6 pushes the U-shaped connecting plate 5 downward until the U-shaped connecting plate 5 and the connecting seat 3 are pressed together, so that the support block 13 and the bottom contact plate 10 are in full contact. With the help of the elasticity of the bottom contact plate 10, the bottom contact plate 10 and the L-shaped connecting plate 9 clamp the connecting plate 2. When one or more of the side plate 7 or the connecting plate 2 are damaged, the technician only needs to loosen the screw 6 to release the bottom contact plate 10 and the L-shaped connecting plate 9 from the connecting plate 2. The technician can replace the side plate 7 or the connecting plate 2 according to the actual damage. Compared with the prior art, this utility model can realize the replacement of a certain structure in the connecting copper busbar without removing the screw. Simply loosening the screw can replace a certain structure in the connecting copper busbar, which improves the work efficiency of the technician.

[0033] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A frequency converter copper busbar connection and fixing device, comprising a base plate (1), characterized in that: The base plate (1) has a connecting copper busbar at its upper end. Two symmetrical connecting seats (3) are fixedly connected to the upper end of the base plate (1). A threaded hole (4) is drilled at the upper end of each connecting seat (3). A U-shaped connecting plate (5) is provided at the upper end of each connecting seat (3). A screw (6) is threadedly connected to the upper end of the U-shaped connecting plate (5). The screw (6) is located inside the threaded hole (4) and threadedly connected to it. The connecting copper busbar is located between the two U-shaped connecting plates (5). The connecting copper busbar includes two side plates (7) located within the U-shaped connecting plates (5). A connecting plate (2) is provided between the two side plates (7). The upper end of the side plate (7) is chiseled with a U-shaped groove (8). The two side plates (7) are fixedly connected to each other at one end. The outer end of the L-shaped connecting plate (9) is fixedly connected to a bottom contact plate (10). The L-shaped connecting plate (9) and the bottom contact plate (10) are fixedly connected to each other at one end. The upper and lower ends of the connecting plate (2) are chiseled with two arc-shaped slots (12) that match the contact springs (11). The upper end of the bottom plate (1) is fixedly connected with two mutually symmetrical support blocks (13). The support blocks (13) are located directly below the bottom contact plate (10).

2. The inverter copper busbar connection and fixing device according to claim 1, characterized in that: An elastic washer (301) is fixedly connected to the upper end of the connecting seat (3). The elastic washer (301) is located outside the threaded hole (4). The elastic washer (301) is made of rubber material.

3. The inverter copper busbar connection and fixing device according to claim 1, characterized in that: The upper end of the screw (6) is chiseled with an adjustment groove (601), and the cross section of the adjustment groove (601) is a regular hexagon.

4. The inverter copper busbar connection and fixing device according to claim 1, characterized in that: A gasket (602) is fitted on the outer end of the screw (6), and the gasket (602) is located on the upper side of the U-shaped connecting plate (5).

5. The inverter copper busbar connection and fixing device according to claim 1, characterized in that: A polished layer is provided at the contact point between the U-shaped connecting plate (5) and the side plate (7).

6. The inverter copper busbar connection and fixing device according to claim 1, characterized in that: The bottom contact plate (10) and the contact spring (11) are both made of elastic metal material, and the surface of the contact spring (11) is smooth.

7. The inverter copper busbar connection and fixing device according to claim 1, characterized in that: The upper end of the support block (13) is chiseled with a strip groove (1301), and the bottom contact plate (10) is fixedly connected with a locking block (1001) that matches the strip groove (1301).

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