An inverter contactor disassembly and assembly device

Abstract

This utility model discloses an inverter contactor assembly / disassembly device, comprising a support frame, a fixed frame, a traction rope, a one-way pulley, and a moving component. The support frame is disposed outside the distribution box. The fixed frame is detachably connected to the contactor. The first end of the traction rope is detachably connected to the fixed frame, and the second end of the traction rope passes over the one-way pulley and is a free end. The one-way pulley is used to control the upward movement of the fixed frame. The moving component is disposed on the support frame and is used to drive the one-way pulley to move horizontally. This utility model, through the function of the moving component driving the one-way pulley to move horizontally, allows the operator to flexibly adjust the operating position according to the specific location of the contactor within the distribution box, reducing the difficulty and labor intensity of operation. Simultaneously, the combined use of the traction rope and the one-way pulley improves the convenience and efficiency of operation.

Description

Technical Field

[0001] This utility model relates to the field of inverter technology, specifically to an inverter contactor disassembly and assembly device. Background Technology

[0002] With the increasing deterioration of the environment and the deepening of people's environmental awareness, photovoltaic power generation, as one of the green and clean energy sources, is being used more and more, and the number and scale of photovoltaic power plants are also growing. In the field of photovoltaic power generation, creating good operational efficiency is fundamental to the survival and sustainable development of solar photovoltaic power plants, and the currently feasible solutions are: improving the utilization rate of electrical equipment and ensuring the safe and stable operation of the equipment.

[0003] In photovoltaic power generation, the electricity generated by solar panels is direct current (DC). To improve output efficiency and match the power grid, the common practice is to convert DC to alternating current (AC) and increase the voltage to reduce transmission losses. The main function of the inverter is to convert DC to AC. After conversion, the contactor, as the main component of the inverter, is installed in the inverter cabinet, i.e., the distribution box. Taking the Sungrow V5 inverter as an example, this contactor weighs 21 kg and its lowest point is 1.3 meters off the ground. During contactor replacement, the limited operating space makes it difficult to accommodate multiple people, posing numerous safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide an inverter contactor disassembly and assembly device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides an inverter contactor disassembly and assembly device, which includes a support frame, a fixed frame, a traction rope, a one-way pulley, and a moving component. The support frame is set outside the distribution box, the fixed frame is detachably connected to the contactor, the first end of the traction rope is detachably connected to the fixed frame, the second end of the traction rope passes around the one-way pulley and is a free end, the one-way pulley is used to control the fixed frame to move upward, and the moving component is set on the support frame to drive the one-way pulley to move horizontally.

[0006] Furthermore, the support frame includes a crossbar and a foot rail. The crossbar is installed on the top of the distribution box, the top of the foot rail is detachably connected to the crossbar, and the bottom of the foot rail is in contact with the ground.

[0007] Furthermore, the crossbar includes a U-shaped rod and a tapered insert. The U-shaped rod is positioned above the distribution box. There are two tapered inserts, each adapted to one of the two lifting lugs on the distribution box. The tops of the two tapered inserts are respectively installed at both ends of the U-shaped rod, and their bottoms are respectively inserted into the lifting lugs of the distribution box.

[0008] Furthermore, the crossbar is connected to the footed track by positioning bolts.

[0009] Furthermore, the footed track is hollow inside and opens downwards, and the moving component includes a translation trolley, which is disposed inside the footed track and slidably connected to the inner wall of the footed track.

[0010] Furthermore, a connecting rod is installed at the bottom of the translation trolley, and the bottom of the connecting rod passes through the opening of the footed track and is connected to the one-way pulley.

[0011] Furthermore, the one-way pulley is provided with a one-way fork inside, which is used to control the one-way pulley to move the fixed frame downward.

[0012] Furthermore, the fixing frame is welded from multiple square tubes, and multiple fixing blocks adapted to the copper busbars of the upper and lower leads of the contactor are installed on the upper and lower sides of the fixing frame. Two adjacent fixing blocks on the same horizontal plane are connected by fixing bolts and form a limiting opening, and the copper busbar is located in the limiting opening.

[0013] Furthermore, a lifting eye bolt is installed on the fixing frame for fixing the first end of the traction rope.

[0014] The beneficial effects of this utility model are as follows: By using a movable component to drive a one-way pulley for horizontal movement, this utility model allows operators to flexibly adjust their operating position according to the specific location of the contactor within the distribution box. This eliminates the need for operators to frequently move their bodies or change their operating posture to adapt to the contactor's position, reducing operational difficulty and labor intensity. Simultaneously, the combined use of the traction rope and the one-way pulley enables remote operation of the contactor. Operators can pull the traction rope from a relatively safe and comfortable position to complete the contactor's assembly and disassembly, improving operational convenience and efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the moving component and the footed track installation structure according to an embodiment of the present utility model.

[0017] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of AA.

[0018] Figure 4 This is a schematic diagram of the installation structure of the one-way pulley and one-way shift fork according to an embodiment of the present utility model.

[0019] Figure 5This is a schematic diagram of the mounting structure of the fixing frame according to an embodiment of the present utility model.

[0020] The components include: 1. Support frame; 2. Fixing frame; 3. Traction rope; 4. One-way pulley; 5. Moving component; 6. Distribution box; 7. Contactor; 8. One-way shift fork; 9. Copper busbar.

[0021] 11. Crossbar; 12. Track with feet; 21. Square tube; 22. Fixing block; 23. Fixing bolt; 24. Lifting eye bolt; 51. Translation trolley; 52. Connecting rod.

[0022] 111. U-shaped rod; 112. Conical insert. Detailed Implementation

[0023] 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 one embodiment 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.

[0024] To make the objectives, technical solutions and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0025] In the following description, references to "an embodiment," "an embodiment," "an example," "example," etc., indicate that the described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitation, but not every embodiment or example necessarily includes that particular feature, structure, characteristic, property, element, or limitation. Furthermore, the repeated use of the phrase "an embodiment according to this application," while possibly referring to the same embodiment, does not necessarily refer to the same embodiment.

[0026] like Figures 1-5 As shown, this utility model discloses an inverter contactor 7 disassembly and assembly device, including a support frame 1, a fixed frame 2, a traction rope 3, a one-way pulley 4, and a moving component 5. The support frame 1 is set outside the distribution box 6, the fixed frame 2 is detachably connected to the contactor 7, the first end of the traction rope 3 is detachably connected to the fixed frame 2, the second end of the traction rope 3 passes around the one-way pulley and is a free end, the one-way pulley 4 is used to control the fixed frame 2 to move upward, and the moving component 5 is set on the support frame 1 to drive the one-way pulley to move horizontally.

[0027] Install the support frame 1 correctly on the outside of the distribution box 6, ensuring its stability and reliability. Adjust and prepare the fixing frame 2 according to the model and size of the contactor 7, ensuring a good match and detachable connection. Connect the fixing frame 2 to the contactor 7 to be disassembled, ensuring a secure connection using appropriate methods (such as bolt connection, snap-fit ​​connection, etc.) to prevent the contactor 7 from falling off during operation. A one-way pulley 4 is suspended from the moving component 5, with the traction rope 3 hanging down from both sides of the groove of the one-way pulley 4. The first end of the traction rope 3 is fixed to the fixing frame 2, and the second end is held by the operator.

[0028] Once the operator's end of the traction rope 3 is taut, the fixing screws of the contactor 7 can be loosened while holding the contactor 7 mounting bracket 2 with one hand. Then, the contactor 7 can be pulled outwards, and simultaneously, the moving component 5 moves horizontally from the inside to the outside on the support frame 1, completing the movement of the contactor 7 outside the inverter cabinet. When it is necessary to slowly lower the mounting bracket 2 (along with the contactor 7), the one-way pulley 4, through its internal mechanism (such as a ratchet and pawl structure), restricts the reverse movement of the traction rope 3, allowing the mounting bracket 2 to descend slowly and stably, preventing damage or safety accidents caused by the contactor 7 falling rapidly due to gravity. This device has a simple structure, is easy to use, and is highly safe. It can significantly improve the efficiency of disassembling and assembling the contactor 7, reduce the operator's labor intensity, and reduce safety hazards. It further ensures civilized operation and is highly practical.

[0029] This invention utilizes the function of the movable component 5 to drive the one-way pulley 4 horizontally, allowing the operator to flexibly adjust the operating position according to the specific location of the contactor 7 within the distribution box 6. This eliminates the need for the operator to frequently move their body or change their operating posture to adapt to the contactor 7's position, reducing operational difficulty and labor intensity. Simultaneously, the combined use of the traction rope 3 and the one-way pulley 4 enables remote operation of the contactor 7. The operator can pull the traction rope 3 from a relatively safe and comfortable position to complete the installation and removal of the contactor 7, improving operational convenience and efficiency.

[0030] In one embodiment, the support frame 1 includes a crossbar 11 and a foot rail 12. The crossbar 11 is mounted on the top of the distribution box 6, and the top of the foot rail 12 is detachably connected to the crossbar 11, while the bottom of the foot rail 12 contacts the ground. The detachable connection between the crossbar 11 and the foot rail 12 enables the support frame 1 to be quickly assembled and disassembled, allowing for flexible adjustments to suit different scenarios.

[0031] In one embodiment, the crossbar 11 includes a U-shaped rod 111 and a tapered insert 112. The U-shaped rod 111 is disposed above the distribution box 6. There are two tapered inserts 112, each of which is adapted to two lifting lugs on the distribution box 6. The tops of the two tapered inserts 112 are respectively installed at both ends of the U-shaped rod 111, and their bottoms are respectively inserted into the lifting lugs of the distribution box 6.

[0032] Place the U-shaped rod 111 horizontally on top of the distribution box 6, adjusting its position so that both ends are aligned with the center of the lifting lugs. Holding the U-shaped rod 111, insert the tapered insert 112 vertically downwards into the lifting lugs. Because the tapered insert 112 fits well with the lifting lugs at the top of the distribution box 6, it cannot move left, right, forward, backward, or downwards. The tapered inserts 112 on both sides of the crossbar 11 and the feet of the footed rail 12 form a tripod shape, stable and safe. That is, the crossbar 11 acts as the lateral load-bearing main body, distributing the weight of the distribution box 6; the footed rail 12 acts as the longitudinal support, transferring the load to the ground, forming a stable triangular structure.

[0033] In one embodiment, the crossbar 11 and the footed rail 12 are connected by positioning bolts, facilitating disassembly and assembly by workers. In this embodiment, a square hole adapted to the footed rail 12 is provided above the crossbar 11, into which the footed rail 12 can be inserted and then fixed with positioning bolts.

[0034] In one embodiment, the footed track 12 is hollow and opens downwards. The moving component 5 includes a translation trolley 51, which is disposed inside the footed track 12 and slidably connected to the inner wall of the footed track 12. In this embodiment, the footed track 12 is made of special steel with a cross-section that is open at the bottom and has an inverted eave. The translation trolley 51 can slide freely within the profile without falling off.

[0035] In one embodiment, a connecting rod 52 is installed at the bottom of the translation trolley 51. The bottom of the connecting rod 52 passes through the opening of the foot track 12 and is connected to the one-way pulley 4, which facilitates the installation of the one-way pulley 4 by the staff.

[0036] In one embodiment, a one-way fork 8 is provided inside the one-way pulley 4 to control the one-way pulley 4 so that the fixing frame 2 moves downward, that is, by rotating or translating, it engages with the ratchet mechanism or wedge mechanism inside the one-way pulley 4 to achieve one-way locking or releasing.

[0037] In this embodiment, the one-way fork 8 includes a serrated clamp that can rotate upwards and a spring. The serrated side of the clamp contacts the traction rope 3, and the spring causes the clamp to tend to move towards the traction rope 3. When the first end of the traction rope 3 is pulled by the gravity of the contactor 7, the clamp of the one-way fork 8 will lock due to friction, that is, the clamp cannot rotate downwards when the traction rope 3 is pulled by the gravity of the contactor 7, and at the same time, the traction rope 3 will engage with the serrated structure on the clamp, preventing the rope from being pulled further and preventing the rope from slipping. When the second end of the traction rope 3 is pulled, it causes the clamp to rotate upwards, causing the traction rope 3 to disengage from the serrated structure, thereby allowing the second end of the traction rope 3 to be pulled. When the operator needs to lower the contactor 7, the one-way fork 8 is released, that is, the clamp is rotated upwards, causing the traction rope 3 to disengage from the serrated structure, and the traction rope 3 can then slide towards the ground under the gravity of the contactor 7.

[0038] In one embodiment, the fixing frame 2 is welded from multiple square tubes 21. Multiple fixing blocks 22 adapted to the copper busbars 9 of the upper and lower leads of the contactor 7 are installed on the upper and lower sides of the fixing frame 2. Two adjacent fixing blocks 22 on the same horizontal plane are connected by fixing bolts 23 and form a limiting port, and the corresponding copper busbar 9 is located in the limiting port.

[0039] In this embodiment, four fixing blocks 22 are installed on both the upper and lower sides of the fixing bracket 2. They are inserted into the side of the upper and lower lead copper busbars 9 of the contactor 7 from the direction of the cabinet door of the distribution box 6. The copper busbars 9 are secured by four fixing bolts 23 that can be tightened by hand. The contactor 7 is located between the upper and lower fixing blocks 22, so that the contactor 7 cannot move within the fixing bracket. As long as the fixing bracket of the contactor 7 is lifted, the contactor 7 is also lifted at the same time.

[0040] In one embodiment, a lifting eye bolt 24 is installed on the fixing frame 2 for fixing the first end of the traction rope 3, i.e., for binding the traction rope 3.

[0041] The workflow of this utility model embodiment is as follows: First, insert the tapered inserts 112 at both ends of the crossbar 11 into the grooves of the lifting lugs above the inverter's distribution box 6. Then, insert the footed rail 12 into the square hole above the crossbar 11 and fix it with positioning bolts. In this way, the two are combined to form a three-legged hanger. It stands steadily above the inverter distribution box 6 (two legs) and on the ground (one leg).

[0042] The translation trolley 51 inside the foot track 12 is suspended by a one-way pulley 4 via a connecting rod 52. The traction rope 3 hangs down from both sides of the pulley groove. The first end of the traction rope 3 is fixed to the lifting eye bolt 24 of the fixed frame 2, and the second end is held by the operator.

[0043] From the direction of the distribution box 6 cabinet door, insert the eight fixing blocks 22 on the fixing bracket 2 into the side of the upper and lower lead copper busbars 9 of the contactor 7 respectively. Use four fixing bolts 23 that can be tightened by hand to fit the copper busbars 9. The contactor 7 is located between the upper and lower rows of fixing blocks 22, so that the contactor 7 cannot move within the fixing bracket.

[0044] After the operator tightens the traction rope 3, while holding the contactor 7 mounting bracket 2 with one hand, loosen the fixing screws of the contactor 7, and then pull the contactor 7 outward. At the same time, the translating trolley 51 moves from the inside to the outside. After the contactor 7 has moved to the outside of the inverter distribution box 6, loosen the one-way fork 8 of the one-way pulley 4, and lower the contactor 7 and mounting bracket 2 to the ground to complete the disassembly of the contactor 7. The installation of the contactor 7 is the reverse operation, which will not be described in detail.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inverter contactor disassembly and assembly device, characterized in that: The device includes a support frame, a fixed frame, a traction rope, a one-way pulley, and a moving component. The support frame is located outside the distribution box. The fixed frame is detachably connected to the contactor. The first end of the traction rope is detachably connected to the fixed frame. The second end of the traction rope passes over the one-way pulley and is a free end. The one-way pulley is used to control the fixed frame to move upward. The moving component is located on the support frame and is used to drive the one-way pulley to move horizontally.

2. The inverter contactor disassembly and assembly device according to claim 1, characterized in that: The support frame includes a crossbar and a foot rail. The crossbar is installed on the top of the distribution box, the top of the foot rail is detachably connected to the crossbar, and the bottom of the foot rail is in contact with the ground.

3. The inverter contactor disassembly and assembly device according to claim 2, characterized in that: The crossbar includes a U-shaped rod and a tapered insert. The U-shaped rod is positioned above the distribution box. There are two tapered inserts, each adapted to two lifting lugs on the distribution box. The tops of the two tapered inserts are respectively installed at both ends of the U-shaped rod, and their bottoms are respectively inserted into the lifting lugs of the distribution box.

4. The inverter contactor disassembly and assembly device according to claim 2, characterized in that: The crossbar is connected to the footed rail by positioning bolts.

5. The inverter contactor disassembly and assembly device according to claim 2, characterized in that: The footed track is hollow inside and opens downwards. The moving component includes a translation trolley, which is disposed inside the footed track and slidably connected to the inner wall of the footed track.

6. The inverter contactor disassembly and assembly device according to claim 5, characterized in that: The bottom of the translation trolley is equipped with a connecting rod, the bottom of which passes through the opening of the footed track and is connected to the one-way pulley.

7. The inverter contactor disassembly and assembly device according to claim 1, characterized in that: The one-way pulley is equipped with a one-way fork, which is used to control the one-way pulley to move the fixed frame downward.

8. The inverter contactor disassembly and assembly device according to claim 1, characterized in that: The fixing frame is welded from multiple square tubes. Multiple fixing blocks that are adapted to the copper busbars of the upper and lower leads of the contactor are installed on the upper and lower sides of the fixing frame. Two adjacent fixing blocks on the same horizontal plane are connected by fixing bolts and form a limiting opening, and the copper busbar is located in the limiting opening.

9. The inverter contactor disassembly and assembly device according to claim 1, characterized in that: The fixing frame is equipped with a lifting eye bolt for fixing the first end of the traction rope.

Images