Low-voltage lead access device based on transformer area insulation bus duct

Abstract

The invention relates to the technical field of lead access, and discloses a low-voltage lead access device based on a transformer area insulation bus duct, which comprises a fixed frame, four groups of connectors are mounted on the fixed frame, and lead auxiliary positioning assemblies are further mounted on the connectors. According to the invention, a bidirectional positioning structure is formed by the guide bump, the inclined chute, the pressing plate and the clamping plate, so that accurate positioning of lead connection under low voltage can be realized, and the wiring reliability is greatly improved; the side, close to the connector, of the sliding groove is designed to be lower in an inclined mode, when the pressing plate slides along the sliding groove, the pressing plate can directly drive the low-voltage lower lead to be close to the connector, and accurate guiding in the vertical direction is completed. Meanwhile, balls at the tail ends of inserting rods on the side walls of the clamping plates are always attached to slopes on the surfaces of guide protruding blocks, the pressing plates move towards the lower positions of sliding grooves, the gradient of the guide protruding blocks is gradually increased, the balls are extruded, the inserting rods are pushed to drive the clamping plates to get close to the middle, clamping and positioning in the left-right direction are achieved, and accurate butt joint of the wiring ends and the connector is further guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of lead wire connection technology, specifically relating to a low-voltage lead wire connection device based on the insulated busbar trunking of a transformer substation. It is particularly suitable for the efficient and accurate connection of the insulated busbar trunking and low-voltage lead wires during the construction and operation of low-voltage distribution transformer substations. It can be widely used in various power distribution scenarios such as industrial plants, residential communities, and commercial complexes, providing key technical support for the stable operation of power distribution systems. Background Technology

[0002] In the construction and operation of low-voltage distribution substations, insulated busbar trunking, as a key carrier for power transmission, directly affects the stability and security of the power supply system through its reliable connection with low-voltage leads. It is a core element in ensuring normal power transmission and meeting user electricity needs. Currently, the low-voltage lead connection work for insulated busbar trunking in distribution substations mainly relies on traditional manual positioning and wiring methods, or simple clamping devices to assist in the operation. These technical solutions have formed a relatively mature application system in practice, and in early scenarios where the load on distribution substations was low and the demand for lead connection was minimal, they could basically meet the basic wiring requirements.

[0003] However, with the rapid development of the social economy, the load density of distribution substations continues to increase, the number of various electrical devices has surged, and the demand for lead wire access is constantly increasing, making the inherent defects of traditional technical solutions increasingly prominent. In existing technologies, low-voltage lead wire access cannot simultaneously ensure both vertical guidance and horizontal clamping of the lead wire, resulting in low mating accuracy between the lead wire terminals and the busbar connectors. This easily leads to positioning deviations, causing problems such as poor contact and loose wiring. These problems not only increase the workload of subsequent operation and maintenance, consuming significant manpower, material resources, and time costs, but may also cause safety hazards such as overheating and burnout due to excessive contact resistance. In severe cases, they can even lead to power distribution system failures and outages, affecting the normal power supply of surrounding users and causing adverse social impacts.

[0004] Furthermore, the process of threading and positioning the leads requires operators to repeatedly adjust their positions, resulting in a cumbersome and inefficient procedure. Especially when multiple sets of leads are connected simultaneously, the positioning and adjustment of a single set of leads is time-consuming, and the consistency of positioning across different sets is difficult to guarantee, further reducing the overall quality and efficiency of the wiring operation and failing to meet the actual needs of efficient construction and maintenance of current power distribution substations. To solve these technical problems and improve the accuracy, reliability, and convenience of low-voltage lead connection, this invention was developed.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is to design a low-voltage lead wire access device based on the transformer substation insulated busbar trunking. By optimizing the structural design, bidirectional precise positioning is achieved during the low-voltage lead wire access process, thereby improving wiring reliability and ease of operation.

[0008] A low-voltage lead wire access device based on the insulated busbar trunking of a transformer substation includes a fixing frame. The fixing frame serves as the basic load-bearing structure of the device and is made of high-strength alloy material. It has good structural stability and corrosion resistance and can adapt to the needs of long-term outdoor or complex indoor environments.

[0009] The mounting bracket is equipped with four sets of connectors. Each set of connectors is used to connect with the low-voltage lead wire. The connectors are made of copper alloy with excellent conductivity and the surface is treated with special anti-oxidation to ensure the conductivity stability after connection with the low-voltage lead wire. Each set of connectors is also equipped with a wire lead wire auxiliary positioning component to achieve accurate positioning of the low-voltage lead wire.

[0010] The auxiliary positioning component includes positioning plates installed on both sides of the low-voltage lead wire. The positioning plates are fastened to the fixing frame with bolts, which is secure and easy to disassemble and maintain. The positioning plates are provided with a pair of sliding grooves, and pressure plates are slidably arranged on the sliding grooves. The height of the sliding groove near the connector wiring end is lower than the height of the other end, forming an inclined structure design. The pressure plates slide along the sliding grooves to vertically position the low-voltage lead wire, ensuring that the lead wire is accurately aligned with the connector wiring end in the vertical direction.

[0011] A pair of clamping plates are slidably arranged at the bottom of the pressure plate. Anti-slip rubber pads are provided on the inner side of the clamping plates, which can enhance the clamping stability of the low-voltage lead wire and avoid damage to the lead wire surface during clamping. The low-voltage lead wire is located in the gap between the pair of clamping plates. The side wall of the positioning plate is also equipped with a guide protrusion. The guide protrusion and the positioning plate are made of integrated molding process, which has high structural strength. The guide protrusion is parallel to the slide groove. The surface of the guide protrusion is provided with a slope with a smooth transition design. During the movement of the pressure plate, the pair of clamping plates move towards the low-voltage lead wire through the squeezing of the guide protrusion, positioning the low-voltage lead wire left and right and achieving horizontal clamping and fixing.

[0012] A push plate is installed on the positioning plate by bolts, and the push plate is slidably connected to the pressure plate. The push plate moves down to drive the pressure plate to slide synchronously. The smooth movement of the pressure plate is achieved by driving the push plate, which ensures the stability of the positioning process.

[0013] In a preferred embodiment of the present invention, a sliding plate is installed at the bottom of the fixing frame. The sliding plate and the fixing frame are fixed by welding, resulting in high connection strength. A pair of parallel slide rails are provided on the sliding plate. The slide rails are made by precision machining, resulting in high smoothness of sliding. The slide rails are used to connect with the external frame, facilitating the overall position adjustment and fixing of the device. The fixing frame is also provided with mounting holes with internal threads, which can be used with bolts to further tighten the connection between the device and the external structure, improving the overall stability of the device after installation.

[0014] In a preferred embodiment of the present invention, a guide plate is provided on the positioning plate. The guide plate and the positioning plate are an integrated structure. The guide plate is in an inclined state with an inclination angle of 30-45 degrees. This angle range can maximize the convenience of lead wire insertion. The guide plate is used to guide the lead wire under low voltage to be smoothly inserted into the gap between a pair of clamps, reducing the difficulty of alignment when inserting the lead wire and improving the operating efficiency.

[0015] In a preferred embodiment of the present invention, a connecting seat is installed on the top of the pressure plate. The connecting seat and the pressure plate are detachably connected by bolts, which facilitates later maintenance and replacement. A slide rod is installed through the connecting seat, and the slide rod and the connecting seat are fitted with a clearance fit. A slider is installed on the slide rod, and the slider and the slide rod are fixed by welding. The slider is slidably connected to the surface of the slide groove. The surface of the slider is treated with a wear-resistant coating to extend its service life. A ball bearing is installed on the top of the connecting seat. The ball bearing is a high-strength wear-resistant ball bearing. The ball bearing is slidably connected to the lower surface of the push plate, which converts sliding friction into rolling friction, reduces frictional resistance, and makes the push plate drive the pressure plate to move more smoothly and effortlessly.

[0016] In a preferred embodiment of the present invention, a guide rod is installed through the inside of the slide groove. The guide rod is fixed to the positioning plate by an interference fit. The guide rod is movable through the slider. The guide rod plays a precise guiding role for the sliding of the slider and avoids the slider from deviating during the sliding process. A compression spring is sleeved on the outer wall of the guide rod. The compression spring is made of high-strength elastic material and has good elastic recovery performance. One end of the compression spring is clamped to the end of the slide groove, and the other end of the compression spring is clamped to the side wall of the slider. The compression spring is used to push the pressure plate to the highest point of the slide groove, providing sufficient operating space for the lead wire to pass through. At the same time, it can automatically drive the pressure plate to reset after the wiring is completed.

[0017] In a preferred embodiment of the present invention, a plug rod is installed on the side wall of the clamping plate. The plug rod is threadedly connected to the clamping plate for easy disassembly and replacement. A limit seat is movably inserted into the outer side wall of the plug rod. The limit seat is welded to the pressure plate. The bottom of the limit seat is installed at the bottom of the pressure plate. A ball bearing is installed at the end of the plug rod. The ball bearing adopts a high-precision rolling bearing structure. The end of the ball bearing is slidably connected to the side wall of the guide protrusion to reduce frictional loss between the plug rod and the guide protrusion and improve the service life of the device.

[0018] In a preferred embodiment of the present invention, a limiting plate is installed on the insertion rod. The limiting plate and the insertion rod are integrally molded. A limiting spring is sleeved on the insertion rod located between the limiting plate and the limiting seat. The limiting spring has good elastic extension and contraction performance. One end of the limiting spring is snapped onto the limiting plate, and the other end of the limiting spring is snapped onto the limiting seat. The limiting spring is used to push the ball to slide against the side wall of the guide protrusion, ensuring that the ball is always in close contact with the guide protrusion, thus ensuring the reliability of the clamping action of the clamping plate.

[0019] In a preferred embodiment of the present invention, a fixing block is installed on the top of the push plate. The fixing block and the push plate are fixed by welding, and the connection is firm and stable. A synchronization plate is installed on the fixing block. The synchronization plate and the fixing block are fastened together by bolts. A locking bolt is screwed onto the synchronization plate. The locking bolt is made of high-strength stainless steel, and the end of the locking bolt is rotatably connected to the end of the positioning plate. By turning the locking bolt, the lifting and lowering of the push plate can be precisely controlled. At the same time, the position of the push plate can be locked after positioning to prevent the pressure plate from shifting during the wiring process.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This invention utilizes a bidirectional positioning structure comprised of a guide protrusion, an inclined groove, a pressure plate, and a clamping plate. This structure enables precise positioning of the low-voltage lead wire, significantly improving wiring reliability and effectively solving problems such as poor contact and loose wiring caused by positioning deviations in traditional technologies. The groove features a lower inclination design closer to the connector. When the pressure plate slides along the groove, it directly guides the low-voltage lead wire towards the connector, achieving precise vertical guidance and ensuring accurate alignment between the lead wire terminal and the connector wiring position. Simultaneously, the ball bearings at the end of the insert rod on the side wall of the clamping plate remain in contact with the slope of the guide protrusion. As the pressure plate moves towards the lower part of the groove, the slope of the guide protrusion gradually increases, squeezing the ball bearings and pushing the insert rod to bring the clamping plate closer together, achieving clamping and positioning in both directions. This further ensures precise connection between the terminal and the connector, providing stable and reliable positioning support for wiring operations.

[0022] The device features a rational overall structural design and convenient, efficient operation. Through the coordination of the synchronization plate and locking bolts, multiple pressure plates can operate synchronously, ensuring consistent positioning when multiple leads are connected, significantly improving wiring efficiency and reducing operator workload. Furthermore, all components are made of high-strength, wear-resistant, and corrosion-resistant materials, coupled with precision machining processes, resulting in a long service life and low maintenance costs. It can adapt to various complex distribution substation environments, possessing broad application prospects and promotional value. Balancing positioning accuracy and ease of operation, it provides an efficient and reliable technical solution for the construction and maintenance of low-voltage distribution substations.

[0023] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0024] In the attached diagram:

[0025] Figure 1 A three-dimensional diagram of a low-voltage lead connection device based on a transformer substation insulated busbar trunking;

[0026] Figure 2 This is an overall diagram of a low-voltage lead connection device based on a transformer substation insulated busbar trunking.

[0027] Figure 3 This is a partial view of a low-voltage lead connection device based on a transformer substation insulated busbar trunking. Figure 1 ;

[0028] Figure 4 This is a partial view of a low-voltage lead connection device based on a transformer substation insulated busbar trunking. Figure 2 ;

[0029] Figure 5 A three-dimensional view of the sliding groove of a low-voltage lead connection device based on a transformer substation insulated busbar trunking;

[0030] Figure 6 A low-voltage lead connection device based on the insulated busbar trunking of a transformer substation. Figure 5 A bottom view.

[0031] In the picture:

[0032] 1. Fixing frame; 2. Slide plate; 3. Slide rail; 4. Mounting hole; 5. Connector; 6. Pressure plate; 7. Positioning plate; 8. Guide plate; 9. Slide rod; 10. Slider; 11. Slide groove; 12. Guide rod; 13. Compression spring; 14. Guide protrusion; 15. Clamping plate; 16. Insert rod; 17. Ball bearing; 18. Limit seat; 19. Limit plate; 20. Limit spring; 21. Connecting seat; 22. Ball bearing; 23. Push plate; 24. Fixing block; 25. Synchronizing plate; 26. Locking bolt. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0034] Example 1:

[0035] like Figures 1 to 6 As shown, a low-voltage lead connection device based on the transformer substation insulated busbar trunking includes a fixing frame 1.

[0036] The mounting bracket 1 is equipped with four sets of connectors 5. Each set of connectors 5 is used to connect with the low-voltage lead wire. Each set of connectors 5 is also equipped with a lead wire auxiliary positioning component.

[0037] The auxiliary positioning component includes positioning plates 7 installed on both sides of the low-voltage lower lead. A pair of sliding grooves 11 are provided on the positioning plates 7. A pressure plate 6 is slidably disposed on the sliding grooves 11. The height of the sliding groove 11 near the wiring end of the connector 5 is lower than the height of the other end, and the pressure plate 6 slides along the sliding groove 11 to vertically position the low-voltage lower lead.

[0038] A pair of clamping plates 15 are slidably provided at the bottom of the pressure plate 6, and the low-pressure lower lead wire is located in the gap between the pair of clamping plates 15. A guide protrusion 14 is also installed on the side wall of the positioning plate 7, and the guide protrusion 14 is parallel to the slide groove 11. The surface of the guide protrusion 14 is provided with a slope. During the movement of the pressure plate 6, the pair of clamping plates 15 move towards the low-pressure lower lead wire by the squeezing of the guide protrusion 14, and the low-pressure lower lead wire is positioned left and right.

[0039] A push plate 23 is installed on the positioning plate 7 by bolts, and the push plate 23 is slidably connected to the pressure plate 6. The push plate 23 moves down to drive the pressure plate 6 to slide synchronously.

[0040] like Figures 1 to 6 As shown in the specific embodiment, a sliding plate 2 is installed at the bottom of the mounting bracket 1. A pair of parallel slide rails 3 are provided on the sliding plate 2. The slide rails 3 are used to connect with the external frame. The mounting bracket 1 is also provided with mounting holes 4. The slide rails 3 on the sliding plate 2 allow the device to slide and adjust relative to the external frame, which facilitates the alignment and installation of the device with the external structure. The mounting holes 4 further enhance the stability of the device after installation and prevent displacement during use.

[0041] Example 2:

[0042] The difference between the above embodiments and this embodiment is that: Figures 1 to 6As shown, a guide plate 8 is provided on the positioning plate 7. The guide plate 8 is in an inclined state and is used to guide the lead wire to smoothly pass through the gap between the pair of clamps 15. The inclined guide plate 8 can guide the low-voltage lead wire, reduce the difficulty of alignment when the lead wire passes through the gap of the clamps 15, and improve the convenience of the lead wire insertion operation.

[0043] like Figures 1 to 6 As shown, in a specific embodiment, a connecting seat 21 is installed on the top of the pressure plate 6, a slide rod 9 is installed through the connecting seat 21, a slider 10 is installed on the slide rod 9, and the slider 10 is slidably connected to the surface of the slide groove 11. A ball bearing 22 is installed on the top of the connecting seat 21, and the ball bearing 22 is slidably connected to the lower surface of the push plate 23. The cooperation between the slider 10 and the slide groove 11 improves the smoothness and stability of the sliding of the pressure plate 6. The ball bearing 22 converts the sliding friction between the push plate 23 and the connecting seat 21 into rolling friction, reducing frictional resistance and making it easier for the push plate 23 to drive the pressure plate 6.

[0044] like Figures 1 to 6 As shown, a guide rod 12 is further installed through the inside of the slide groove 11, and the guide rod 12 movably passes through the slider 10. A compression spring 13 is sleeved on the outer wall of the guide rod 12. One end of the compression spring 13 is engaged with the end of the slide groove 11, and the other end is engaged with the side wall of the slider 10. The compression spring 13 is used to push the pressure plate 6 to the highest point of the slide groove 11. The guide rod 12 guides and limits the sliding of the slider 10, preventing the slider 10 from deviating during sliding. The compression spring 13 keeps the pressure plate 6 at the highest point in the initial state, providing sufficient space for the lead wire to pass through. At the same time, it can drive the pressure plate 6 to reset after the wiring is completed.

[0045] like Figures 1 to 6 As shown, a rod 16 is installed on the side wall of the clamping plate 15. A limiting seat 18 is movably inserted into the outer side wall of the rod 16. The bottom of the limiting seat 18 is installed at the bottom of the pressure plate 6. A ball bearing 17 is installed at the end of the rod 16. The end of the ball bearing 17 is slidably connected to the side wall of the guide protrusion 14. A limiting plate 19 is installed on the rod 16. A limiting spring 20 is sleeved on the rod 16 located between the limiting plate 19 and the limiting seat 18. One end of the limiting spring 20 is engaged with the limiting plate 19, and the other end of the limiting spring 20 is engaged with the limiting seat 18. The limiting spring 20 is used to push the ball bearing 17 to slide and connect with the side wall of the guide protrusion 14. The ball bearing 17 reduces the friction between the insert rod 16 and the guide protrusion 14. The cooperation between the limit seat 18 and the insert rod ensures the stability of the movement of the clamping plate 15. The limit spring 20 can keep the ball bearing 17 in contact with the guide protrusion 14, ensuring the reliability of the clamping action of the clamping plate 15. At the same time, it can drive the clamping plate 15 to separate during reset.

[0046] like Figures 1 to 6As shown, in a specific embodiment, a fixing block 24 is installed on the top of the push plate 23, a synchronization plate 25 is installed on the fixing block 24, and a locking bolt 26 is screwed onto the synchronization plate 25, with the end of the locking bolt 26 rotatably connected to the end of the positioning plate 7. The arrangement of the synchronization plate 25 and the fixing block 24 allows multiple sets of push plates 23 to move synchronously, ensuring the positioning consistency of each pressure plate 6. The tightening method of the locking bolt 26 facilitates the operator's control of the movement of the push plate 23 and can lock the position of the push plate 23 after positioning is completed.

[0047] The implementation principle of the low-voltage lead connection device based on the transformer substation insulated busbar trunking of the present invention is as follows:

[0048] Before connecting the low-voltage leads, the device is first connected to the external frame via a pair of slide rails 3 on the bottom slide plate 2 of the fixed frame 1. This initial positioning and installation of the device is achieved. The operator can slide the device along the slide rails 3 to adjust its horizontal position according to the actual wiring requirements. After the position is adjusted, the device is further tightened to the external frame with high-strength bolts through the mounting holes 4 on the fixed frame 1. This ensures that the device remains stable during subsequent wiring operations and will not shift due to operational vibrations or other factors, providing a reliable foundation for the low-voltage lead connection and positioning.

[0049] Before the low-voltage lead wire insertion operation, the initial state of the device is as follows: Under the elastic force of the compression spring 13, the slider 10 is pushed to the highest point of the slide groove 11. At this time, the pressure plate 6 is in the highest position of the slide groove 11 along with the slider 10, leaving sufficient operating space for the insertion of the low-voltage lead wire. At the same time, under the elastic force of the limit spring 20, the ball bearing 17 on the clamping plate 15 always keeps in close contact with the side wall of the guide protrusion 14. Since the slope of the guide protrusion 14 near the highest point of the slide groove 11 is relatively gentle, the squeezing force on the ball bearing 17 is small, so that the pair of clamping plates 15 are in a state of separation from each other, further facilitating the insertion of the low-voltage lead wire. The operator can align one end of the low-voltage lead wire to be inserted with the inclined guide plate 8 on the positioning plate 7. Under the guidance of the guide plate 8, it can be smoothly inserted into the gap between the pair of clamping plates 15. The inclined structure of the guide plate 8 effectively reduces the difficulty of alignment when inserting the lead wire, eliminating the need for the operator to repeatedly adjust the lead wire angle, greatly improving the convenience and efficiency of operation.

[0050] After the low-voltage lead wire is inserted into place, the operator manually tightens the locking bolt 26 on the synchronization plate 25. Since the end of the locking bolt 26 is rotatably connected to the end of the positioning plate 7, the tightening of the locking bolt 26 will drive the synchronization plate 25 to move slowly downward in the vertical direction under the action of thread transmission. The synchronization plate 25 drives the push plate 23 to move downward synchronously through the fixing block 24 connected at the bottom. The bottom of the push plate 23 is rolledly connected to the ball bearing 22 on the top connecting seat 21 of the pressure plate 6. The downward force of the push plate 23 is smoothly transmitted to the pressure plate 6 through the ball bearing 22, driving the pressure plate 6 to slide downward along the slide groove 11 on the positioning plate 7. At this time, the slider 10 slides synchronously along the guide rod 12 inside the slide groove 11 and squeezes the compression spring 13, causing the compression spring 13 to undergo elastic deformation and store elastic potential energy. Because the height of the slide groove 11 near the connector 5 wiring point is lower than the height of the other end, a stable tilt angle is formed. During the sliding process, the pressure plate 6 will drive the low-voltage lead wire to gradually move closer to the connector 5, and at the same time realize the vertical positioning of the low-voltage lead wire, ensuring that the lead wire wiring end is accurately aligned with the wiring position of the connector 5, and avoiding vertical positioning deviation.

[0051] As the pressure plate 6 slides along the slide groove 11, the ball bearing 17 at the end of the insert rod 16 on the side wall of the clamping plate 15 maintains sliding contact with the slope of the guide protrusion 14. As the pressure plate 6 moves towards the lower part of the slide groove 11, the slope of the guide protrusion 14 in contact with the ball bearing 17 gradually increases, and the guide protrusion 14 generates a continuously increasing inward squeezing force on the ball bearing 17. This squeezing force is transmitted to the insert rod 16 through the ball bearing 17, pushing the insert rod 16 to slide along the guide hole inside the limiting seat 18 towards the low-pressure lower lead wire. The pair of clamping plates 15 then move towards the middle synchronously, thereby clamping and positioning the low-pressure lower lead wire in the left and right directions, ensuring that the low-pressure lower lead wire remains stable in the horizontal direction and avoiding left and right deviation. During this process, the limiting plate 19 on the insert rod 16 synchronously compresses the limiting spring 20, allowing the limiting spring 20 to store elastic potential energy, preparing for the subsequent reset of the clamping plate 15. When the pressure plate 6 slides to the lowest point of the slide groove 11, the terminal of the low-voltage lower lead wire is precisely aligned with the connector 5. At this time, the clamping force of the vertical pressure plate 6 and the clamping force of the left and right clamping plates 15 work together to keep the low-voltage lower lead wire in a stable positioning state. The operator can smoothly complete the wiring operation between the low-voltage lower lead wire and the connector 5, effectively avoiding problems such as poor contact and loose wiring caused by positioning deviation.

[0052] After the wiring operation is completed, the operator reverses the tightening bolt 26, causing the synchronous plate 25 and push plate 23 to move upward, releasing the downward pressure on the pressure plate 6. At this time, the compression spring 13 releases its elastic potential energy, pushing the slider 10 to move the pressure plate 6 upward along the slide groove 11 to reset. At the same time, the limit spring 20 also releases its elastic potential energy, pushing the limit plate 19 and the insertion rod 16 to move outward, causing the clamping plate 15 to separate and loosen the clamping of the low-voltage lead wire. The operator can then reset the entire device, completing the connection of one set of low-voltage leads. If multiple sets of leads need to be connected, the above operation process can be repeated to ensure that each set of leads can be accurately positioned and reliably connected.

Claims

1. A low-voltage lead connection device based on a transformer substation insulated busbar trunking, comprising a fixing frame (1), characterized in that: The mounting bracket (1) is equipped with four sets of connectors (5), each set of connectors (5) is used to connect with the low voltage lead wire, and each set of connectors (5) is also equipped with a lead wire auxiliary positioning component; The auxiliary positioning component includes positioning plates (7) installed on both sides of the low-voltage lead wire. A pair of sliding grooves (11) are provided on the positioning plates (7). A pressure plate (6) is slidably arranged on the sliding grooves (11). The height of the sliding groove (11) near the connector (5) wiring point is lower than the height of the other end, and the pressure plate (6) slides along the sliding groove (11) to vertically position the low-voltage lead wire. The bottom of the pressure plate (6) is also slidably provided with a pair of clamping plates (15), and the low-pressure lower lead wire is located in the gap between the pair of clamping plates (15). The side wall of the positioning plate (7) is also provided with a guide protrusion (14), and the guide protrusion (14) is parallel to the slide groove (11). The surface of the guide protrusion (14) is provided with a slope. During the movement of the pressure plate (6), the pair of clamping plates (15) move towards the low-pressure lower lead wire by the squeezing of the guide protrusion (14), and the low-pressure lower lead wire is positioned left and right. A push plate (23) is installed on the positioning plate (7) by bolts, and the push plate (23) is slidably connected to the pressure plate (6). The push plate (23) moves down to drive the pressure plate (6) to slide synchronously.

2. The low-voltage lead connection device based on the transformer substation insulated busbar trunking according to claim 1, characterized in that, The bottom of the fixed frame (1) is equipped with a sliding plate (2), and a pair of parallel slide rails (3) are provided on the sliding plate (2). The slide rails (3) are used to connect with the external frame. The fixed frame (1) is also provided with mounting holes (4).

3. A low-voltage lead connection device based on an insulated busbar trunking in a transformer substation according to claim 1, characterized in that, The positioning plate (7) is provided with a guide plate (8), which is in an inclined state. The guide plate (8) is used to guide the smooth insertion into the gap between a pair of clamps (15).

4. A low-voltage lead connection device based on a transformer substation insulated busbar trunking according to claim 1, characterized in that, A connecting seat (21) is installed on the top of the pressure plate (6), and a sliding rod (9) is installed through the connecting seat (21).

5. A low-voltage lead connection device based on a transformer substation insulated busbar trunking according to claim 4, characterized in that, A guide rod (12) is installed through the inside of the slide groove (11). The guide rod (12) is movably connected to the slider (10). A compression spring (13) is sleeved on the outer wall of the guide rod (12). One end of the compression spring (13) is engaged with the end of the slide groove (11), and the other end of the compression spring (13) is engaged with the side wall of the slider (10). The compression spring (13) is used to push the pressure plate (6) to the highest point of the slide groove (11).

6. A low-voltage lead connection device based on a transformer substation insulated busbar trunking according to claim 1, characterized in that, A rod (16) is installed on the side wall of the clamping plate (15). A limiting seat (18) is movably inserted into the outer side wall of the rod (16). The bottom of the limiting seat (18) is installed at the bottom of the pressure plate (6). A ball (17) is installed at the end of the rod (16). The end of the ball (17) is slidably connected to the side wall of the guide protrusion (14).

7. A low-voltage lead connection device based on a transformer substation insulated busbar trunking according to claim 6, characterized in that, A limiting plate (19) is installed on the insert rod (16), and a limiting spring (20) is sleeved on the insert rod (16) located between the limiting plate (19) and the limiting seat (18).

8. A low-voltage lead connection device based on a transformer substation insulated busbar trunking according to claim 1, characterized in that, A fixing block (24) is installed on the top of the push plate (23), and a synchronization plate (25) is installed on the fixing block (24). A locking bolt (26) is screwed onto the synchronization plate (25), and the end of the locking bolt (26) is rotatably connected to the end of the positioning plate (7).

9. A low-voltage lead connection device based on a transformer substation insulated busbar trunking according to claim 4, characterized in that, A slider (10) is installed on the slide rod (9), and the slider (10) is slidably connected to the surface of the slide groove (11). A ball bearing (22) is installed on the top of the connecting seat (21), and the ball bearing (22) is slidably connected to the lower surface of the push plate (23).

10. A low-voltage lead connection device based on a transformer substation insulated busbar trunking according to claim 7, characterized in that, One end of the limiting spring (20) is engaged with the limiting plate (19), and the other end of the limiting spring (20) is engaged with the limiting seat (18). The limiting spring (20) is used to push the ball (17) to slide and connect with the side wall of the guide protrusion (14).

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