Photovoltaic module cable sag prevention method

Abstract

A method for preventing photovoltaic module cables from sagging is disclosed. In existing technologies, photovoltaic module cables are mostly naturally hung or simply bound for fixation. This method affects the safety and lifespan of the photovoltaic system and may cause cable joints to loosen, leading to poor contact. This invention includes the following steps: Ground stakes are inserted into rectangular fixing plates around the bottom flange to firmly fix the device to the ground; during height adjustment, rotating the handle drives a single-headed worm gear to rotate, which meshes with a worm wheel, causing the B synchronous pulley welded to the worm wheel to rotate. This rotation is transmitted via a synchronous belt to the A synchronous pulley fixed to the main shaft, thereby driving the main shaft and secondary shaft to rotate; gears fixed on the two secondary shafts mesh with two support column racks, causing the support columns to rise and fall along the A slide rail, thus adjusting the height of the upper clamping device. This invention is used to prevent photovoltaic module cables from sagging.

Description

Technical Field

[0001] This invention relates to a method for preventing photovoltaic module cables from sagging. Background Technology

[0002] In existing technologies, the cables of photovoltaic modules are mostly naturally hanging or simply bound and fixed. This method has many problems: On the one hand, long-term hanging will cause the cables to bear a lot of tension, especially in environments with large temperature differences and strong winds. The cables are prone to accelerated aging and insulation damage due to repeated pulling, which will affect the safety and service life of the photovoltaic system. On the other hand, simple binding and fixing lacks a reliable adjustment mechanism. When the cables expand and contract due to temperature changes or are displaced due to external environmental influences, the tension and position of the cables cannot be adjusted adaptively, which may lead to loose cable joints and failures such as poor contact. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a method for preventing photovoltaic module cables from sagging.

[0004] The above objectives are achieved through the following scheme: A method for preventing photovoltaic module cables from sagging, the method comprising the following steps: (1) Insert ground stakes into the rectangular fixing plate around the bottom flange to firmly fix the device to the ground; when adjusting the height, turn the rotating handle to drive the single-head worm to rotate, the single-head worm meshes with the worm wheel to make the B synchronous pulley welded to the worm wheel rotate, and transmits the rotation to the A synchronous pulley fixed to the main shaft through the synchronous belt, thereby driving the main shaft and the auxiliary shaft to rotate. (2) The gears fixed on the two secondary shafts mesh with the racks of the two support columns respectively, so that the support columns rise and fall along the A slide rail, thereby adjusting the height of the upper clamping device. The self-locking function of the single-head worm and worm wheel ensures the stability of the position of the clamping device. The limit plate, limit column and limit block can prevent the support columns from rising and falling excessively. (3) When clamping and adjusting, the cable is placed into the clamping cylinder and initially limited by the placement arc. The hollow clamping plates on both sides are adaptively clamped according to the cable diameter under the action of the spring. The hollow clamping plates are connected to the rollers of the guide post to convert the sliding friction with the cable into rolling friction. The rubber pad at the bottom of the clamping cylinder can also buffer and protect. The device provides friction protection and anti-sagging protection for the photovoltaic cable as a whole, and is compatible with cables of different specifications.

[0005] The method for preventing photovoltaic module cables from sagging, wherein the clamping device is fixed above the lifting device; The lifting device includes a lifting cylinder and a limiting plate. The limiting plate is fixed inside the lifting cylinder. Two support columns are symmetrically arranged above the limiting plate. The upper end of each support column is fixed to the lifting device, the lower end is fixed to the limiting column, the front end is fixed to the rack, and the rear end is slidably connected to the A slide rail. The two racks are connected to the driving device. The clamping device includes a clamping cylinder and two hollow clamping plates. One end of each hollow clamping plate is fixed to the inner wall of the clamping cylinder by a spring, and the other end is connected to multiple rollers by a guide post. The hollow clamping plate is slidably connected to the B slide rail at the bottom of the clamping cylinder, and a rubber pad is fixed in the middle part of the two B slide rails.

[0006] The method for preventing photovoltaic module cables from sagging includes a driving device comprising two secondary shafts and two gears. The two gears are respectively fixed on the two secondary shafts and mesh with the two racks respectively. One end of the two secondary shafts is symmetrically fixed to the inner wall of the lifting cylinder above the limiting plate via bearing units. The other end of the two secondary shafts is connected to both ends of the main shaft via couplings.

[0007] The method for preventing photovoltaic module cables from sagging includes a synchronous pulley A fixed on the main shaft, a synchronous pulley A connected to a synchronous pulley B below the limiting plate via a synchronous belt, a synchronous pulley B welded to a worm gear, a worm gear connected to shaft A, shaft A fixed to the inner wall of the lifting cylinder via a bearing unit, a worm gear meshing with a single-headed worm, and the other end of the single-headed worm passing through the outer wall of the lifting cylinder and fixed to a rotating handle. The method for preventing photovoltaic module cables from sagging includes a limiting block fixed at the lower end of the limiting post.

[0008] In the method for preventing photovoltaic module cables from sagging, the A-slide rail is fixed between the limiting plate and the top of the lifting cylinder.

[0009] The method for preventing photovoltaic module cables from sagging is described above, wherein the clamping cylinder is hollow at both ends and has an opening at the top, and a placement arc is symmetrically fixed on both sides of the opening.

[0010] The method for preventing photovoltaic module cables from sagging includes a rectangular flange fixed to the lower end of the lifting cylinder, and rectangular fixing plates symmetrically fixed around the rectangular flange. Beneficial effects

[0011] 1. The lifting device of the present invention uses a transmission structure of "rotating handle - single-head worm gear - worm wheel - synchronous pulley - main shaft - secondary shaft - gear - rack" to manually control the lifting of the support column, thereby adjusting the height of the clamping device, avoiding the cable from drooping too loosely or shaking repeatedly when the wind is strong, and improving the safety and service life of the photovoltaic module cable.

[0012] 2. The clamping device of the present invention adopts a spring-connected hollow clamping plate design. The spring can clamp the cable and is suitable for photovoltaic cables of different specifications. At the same time, the hollow clamping plate is connected to multiple rollers through guide posts. These rollers can reduce the friction between the cable and the clamping plate, which can facilitate the slight displacement caused by the thermal expansion and contraction of the cable and avoid scratching and damage to the cable insulation layer during the clamping process.

[0013] 3. The rectangular flange fixed at the lower end of the lifting cylinder and the rectangular fixing plate symmetrically arranged around it can quickly fix the device to the ground through ground piles, thereby improving installation efficiency and the stability of the invention. Attached Figure Description

[0014] Figure 1 This is a front view of the present invention; Figure 2 This is a right view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a front perspective view of the lifting device of the present invention; Figure 5 This is a right perspective view of the lifting device of the present invention; Figure 6 This is a front perspective view of the clamping device of the present invention; Figure 7 This is a perspective view of the present invention; Figure 8 This is a top view of the limiting plate of the present invention; In the diagram: 1. Clamping device; 2. Lifting device; 3. Clamping cylinder; 4. Lifting cylinder; 5. Rectangular flange; 6. Rectangular fixing plate; 7. Storage arc; 8. Opening; 9. Spring; 10. Rotating handle; 11. Single-headed worm gear; 12. Rubber pad; 13. B slide rail; 14. Hollow clamp plate; 15. Idler roller; 16. Guide column; 17. Worm gear; 18. Bearing unit; 19. Rack; 20. A shaft; 21. Main shaft; 22. Secondary shaft; 23. Gear; 24. Support column; 25. A synchronous pulley; 26. B synchronous pulley; 27. Synchronous belt; 28. Coupling; 29. ​​Limiting column; 30. Limiting block; 31. Limiting plate; 32. A slide rail; 33. Drive device. Detailed Implementation

[0015] Reference Figures 1-8 A method for preventing photovoltaic module cables from sagging, the method comprising the following steps: (1) Insert ground stakes into the rectangular fixing plate around the bottom flange to firmly fix the device to the ground; when adjusting the height, turn the rotating handle to drive the single-head worm to rotate, the single-head worm meshes with the worm wheel to make the B synchronous pulley welded to the worm wheel rotate, and transmits the rotation to the A synchronous pulley fixed to the main shaft through the synchronous belt, thereby driving the main shaft and the auxiliary shaft to rotate. (2) The gears fixed on the two secondary shafts mesh with the racks of the two support columns respectively, so that the support columns rise and fall along the A slide rail, thereby adjusting the height of the upper clamping device. The self-locking function of the single-head worm and worm wheel ensures the stability of the position of the clamping device. The limit plate, limit column and limit block can prevent the support columns from rising and falling excessively. (3) When clamping and adjusting, the cable is placed into the clamping cylinder and initially limited by the placement arc. The hollow clamping plates on both sides are adaptively clamped according to the cable diameter under the action of the spring. The hollow clamping plates are connected to the rollers of the guide post to convert the sliding friction with the cable into rolling friction. The rubber pad at the bottom of the clamping cylinder can also buffer and protect. The device provides friction protection and anti-sagging protection for the photovoltaic cable as a whole, and is compatible with cables of different specifications.

[0016] A method for preventing photovoltaic module cables from sagging includes: a lifting device 2 and a clamping device 1, wherein the clamping device is fixed above the lifting device; The lifting device includes a lifting cylinder 4 and a limiting plate 31. The limiting plate is fixed inside the lifting cylinder. Two support columns 24 are symmetrically arranged above the limiting plate. The upper end of each support column is fixed to the lifting device, the lower end is fixed to the limiting column 29, the front end is fixed to the rack 19, and the rear end is slidably connected to the slide rail A 32. The two racks are connected to the driving device 33. The clamping device includes a clamping cylinder 3 and two hollow clamping plates 14. One end of each hollow clamping plate is fixed to the inner wall of the clamping cylinder by a spring 9, and the other end is connected to multiple rollers 15 by a guide post 16. The hollow clamping plates are slidably connected to the B slide rail 13 at the bottom of the clamping cylinder. A rubber pad 12 is fixed in the middle part of the two B slide rails. The rollers are rotatable and can move with the cable when the cable enters the clamping device or when the cable undergoes a small displacement, thereby reducing friction.

[0017] The drive device includes two auxiliary shafts 22 and two gears 23. The two gears are respectively fixed on the two auxiliary shafts and mesh with the two racks respectively. One end of the two auxiliary shafts is symmetrically fixed to the inner wall of the lifting cylinder above the limiting plate through bearing unit 18. The other end of the two auxiliary shafts is connected to both ends of the main shaft 21 through coupling 28.

[0018] A synchronous pulley 25 is fixed on the main shaft. The synchronous pulley 25 is connected to a synchronous pulley 26 below the limiting plate via a synchronous belt 27. The synchronous pulley 26 is welded to a worm gear 17. The worm gear is connected to shaft A 20. Shaft A is fixed to the inner wall of the lifting cylinder via a bearing unit. The worm gear meshes with a single-headed worm 11. The other end of the single-headed worm passes through the outer wall of the lifting cylinder and is fixed to the rotating handle 10, and is also fixed to the outer wall of the lifting cylinder via a bearing unit. The transmission between the single-headed worm and the worm gear is a self-locking transmission to ensure stable position after lifting.

[0019] The lower end of the limiting column is fixed with a limiting block 30. The limiting plate, the limiting column and the limiting block are used to limit the lifting and lowering of the support column, thereby limiting the lifting and lowering of the clamping device.

[0020] The A slide rail is fixed between the limiting plate and the top of the lifting cylinder.

[0021] The clamping cylinder is hollow at both ends and has an opening 8 at the top. A placement arc 7 is symmetrically fixed on both sides of the opening. The placement arc has an arc-shaped structure and the middle opening of the two placement arcs is larger, which is used to limit the cable and prevent the cable from slipping out when the clamping device is raised.

[0022] A rectangular flange 5 is fixed to the lower end of the lifting cylinder, and rectangular fixing plates 6 are symmetrically fixed around the rectangular flange. The rectangular fixing plates are used to insert ground stakes to fix the lifting device to the ground and ensure the stability of the device.

[0023] Working principle: This invention first inserts ground stakes into the rectangular fixing plates around the bottom flange, firmly fixing the device to the ground. For height adjustment, rotating the handle drives a single-headed worm gear to rotate. The worm gear meshes with a worm wheel, causing the B synchronous pulley welded to the worm wheel to rotate. This rotation is transmitted via a synchronous belt to the A synchronous pulley fixed to the main shaft, which in turn drives the main shaft and secondary shaft to rotate. Gears fixed to the two secondary shafts mesh with the racks of the two support columns, causing the support columns to rotate along A... The sliding rails are raised and lowered to adjust the height of the upper clamping device. The self-locking function of the single-head worm gear and worm wheel ensures the stability of the clamping device's position. Limit plates, limit posts, and limit blocks prevent the support columns from rising or falling excessively. During clamping adjustment, the cable is placed into the clamping cylinder and initially limited by the placement arc. The hollow clamping plates on both sides adaptively clamp according to the cable diameter under the action of springs. The rollers connected to the guide posts of the hollow clamping plates convert the sliding friction with the cable into rolling friction. The rubber pad at the bottom of the clamping cylinder also provides cushioning and protection. This device provides friction protection and anti-sagging protection for the entire photovoltaic cable and is compatible with cables of different specifications.

Claims

1. A method for preventing photovoltaic module cables from sagging, characterized in that: The method includes the following steps: (1) Insert ground stakes into the rectangular fixing plate around the bottom flange to firmly fix the device to the ground; when adjusting the height, turn the rotating handle to drive the single-head worm to rotate, the single-head worm meshes with the worm wheel to make the B synchronous pulley welded to the worm wheel rotate, and transmits the rotation to the A synchronous pulley fixed to the main shaft through the synchronous belt, thereby driving the main shaft and the auxiliary shaft to rotate. (2) The gears fixed on the two secondary shafts mesh with the racks of the two support columns respectively, so that the support columns rise and fall along the A slide rail, thereby adjusting the height of the upper clamping device. The self-locking function of the single-head worm and worm wheel ensures the stability of the position of the clamping device. The limit plate, limit column and limit block can prevent the support columns from rising and falling excessively. (3) When clamping and adjusting, the cable is placed into the clamping cylinder and initially limited by the placement arc. The hollow clamping plates on both sides are adaptively clamped according to the cable diameter under the action of the spring. The hollow clamping plates are connected to the rollers of the guide post to convert the sliding friction with the cable into rolling friction. The rubber pad at the bottom of the clamping cylinder can also buffer and protect. The device provides friction protection and anti-sagging protection for the photovoltaic cable as a whole, and is compatible with cables of different specifications.

2. The method for preventing photovoltaic module cables from sagging according to claim 1, characterized in that: The clamping device is fixed above the lifting device; The lifting device includes a lifting cylinder and a limiting plate. The limiting plate is fixed inside the lifting cylinder. Two support columns are symmetrically arranged above the limiting plate. The upper end of each support column is fixed to the lifting device, the lower end is fixed to the limiting column, the front end is fixed to the rack, and the rear end is slidably connected to the A slide rail. The two racks are connected to the driving device. The clamping device includes a clamping cylinder and two hollow clamping plates. One end of each hollow clamping plate is fixed to the inner wall of the clamping cylinder by a spring, and the other end is connected to multiple rollers by a guide post. The hollow clamping plate is slidably connected to the B slide rail at the bottom of the clamping cylinder, and a rubber pad is fixed in the middle part of the two B slide rails.

3. The method for preventing photovoltaic module cables from sagging according to claim 2, characterized in that: The drive device includes two auxiliary shafts and two gears. The two gears are respectively fixed on the two auxiliary shafts and mesh with the two racks respectively. One end of the two auxiliary shafts is symmetrically fixed to the inner wall of the lifting cylinder above the limiting plate through bearing units. The other end of the two auxiliary shafts is connected to both ends of the main shaft through couplings.

4. The method for preventing photovoltaic module cables from sagging according to claim 3, characterized in that: A synchronous pulley A is fixed on the main shaft. The synchronous pulley A is connected to the synchronous pulley B below the limiting plate via a synchronous belt. The synchronous pulley B is welded to a worm gear. The worm gear is connected to shaft A. Shaft A is fixed to the inner wall of the lifting cylinder via a bearing unit. The worm gear meshes with a single-headed worm. The other end of the single-headed worm passes through the outer wall of the lifting cylinder and is fixed to the rotating handle.

5. A method for preventing photovoltaic module cables from sagging according to claim 4, characterized in that: A limit block is fixed at the lower end of the limiting post.

6. A method for preventing photovoltaic module cables from sagging according to claim 5, characterized in that: The A slide rail is fixed between the limiting plate and the top of the lifting cylinder.

7. A method for preventing photovoltaic module cables from sagging according to claim 6, characterized in that: The clamping cylinder is hollow at both ends and has an opening at the top. A placement arc is symmetrically fixed on both sides of the opening.

8. A method for preventing photovoltaic module cables from sagging according to claim 7, characterized in that: A rectangular flange is fixed to the lower end of the lifting cylinder, and rectangular fixing plates are symmetrically fixed around the rectangular flange.

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