Pulley for laying power cable of photovoltaic power station

Abstract

The utility model provides a pulley for improving power cable laying efficiency of a photovoltaic power station, and belongs to the technical field of power cable laying of photovoltaic power stations. A pulley for laying a power cable of a photovoltaic power station comprises a pulley base, a pulley frame and rollers, the bottom of the pulley frame is fixedly connected with the pulley base, and the rollers are arranged on the pulley frame; the pulley frame comprises a fixed support and a movable support, the bottom end of the fixed support is fixedly connected with the pulley base, and the side, close to the top end, of the fixed support is connected with the movable support. The fixed support comprises a first fixed support and a second fixed support, one end of the movable support is rotatably connected with the second fixed support, and the other end is fixedly connected with the first fixed support through a bolt; and the pulley base is buried in soil or fixed on a cable bridge. The pulley provided by the utility model can greatly improve the cable laying efficiency, facilitates the cable laying, flexibly adjusts the installation position of the cable pulley, reduces the number of redundant pulleys, and reduces the laying cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic power station power cable laying, and specifically relates to a pulley for improving the laying efficiency of photovoltaic power station power cables. Background Art

[0002] At present, the pulleys used for laying photovoltaic power station power cables usually adopt flat pulleys, straight-run pulleys, turning

[0003] angle pulleys, etc. The conventional pulleys on the market are light in weight, and the cables are prone to deviation during laying, and the cables are easy to slip out of the pulleys. Moreover, for universal pulleys, there are disadvantages such as the surrounding brackets being closed. Although it can ensure that the cable laying is fast and safe, since the pulley is welded and closed around, the pulley cannot be removed from the cable after the cable is laid. For power stations, especially photovoltaic power stations, the length of a single power cable is relatively long. When laying the cable, the stability of the pulley and the timely adjustment of the pulley position should be considered to meet the requirements of laying the power cable quickly and well. Summary of the Utility Model

[0004] In order to solve the deficiencies in the prior art, the utility model provides a pulley for laying photovoltaic power station power cables, which overcomes the problems that the pulley cannot be removed from the cable and the pulley is unstable during cable laying in traditional pulleys.

[0005] The utility model adopts the following technical solutions.

[0006] A pulley for laying photovoltaic power station power cables includes a pulley base, a pulley frame and rollers. The bottom of the pulley frame is fixedly connected to the pulley base, and the rollers are arranged on the pulley frame.

[0007] The pulley frame includes a fixed bracket and a movable bracket. The bottom end of the fixed bracket is fixedly connected to the pulley base, and one side of the fixed bracket near the top is connected to the movable bracket.

[0008] The fixed bracket includes a first fixed bracket and a second fixed bracket. One end of the movable bracket is rotatably connected to the second fixed bracket, and the other end is fixedly connected to the first fixed bracket through bolts.

[0009] The pulley base is buried in the soil or fixed on the cable tray.

[0010] Further, the pulley base includes an upper bottom plate, a lower bottom plate and height-adjusting bolts. One end of the height-adjusting bolts is connected to the upper bottom plate, and the other end is connected to the lower bottom plate.

[0011] Further, the upper bottom plate is welded to the first fixed bracket and the second fixed bracket. The lower bottom plate is a movable bottom plate, and the distance between the lower bottom plate and the upper bottom plate is adjusted by the height-adjusting bolts.

[0012] Furthermore, reserved holes for connecting the height-adjusting bolts are provided on the upper bottom plate and the lower bottom plate.

[0013] Furthermore, the number of the rollers is four. The first roller is connected to the bottom of the movable bracket; one end of the second roller is connected to the first fixed bracket and the other end is connected to the second fixed bracket; both ends of the third roller are connected to the first fixed bracket, and both ends of the fourth roller are connected to the second fixed bracket.

[0014] Furthermore, the first roller and the second roller are parallel and perpendicular to the fixed bracket; the third roller and the fourth roller are parallel to the fixed bracket.

[0015] The beneficial effects of the present utility model are as follows: compared with the prior art:

[0016] (1) The pulley provided by the present utility model is fixed to the ground or the bridge bracket through the pulley base, thereby increasing the stability of the pulley during cable laying, reducing the risk of damage to the outer sheath of the cable, and saving labor costs.

[0017] (2) After the cable is laid, the pulley provided by the present utility model can open the pulley frame and take out the cable by adjusting the bolt at one end of the movable bracket, which can make the laying of the power cable more flexible and convenient, reduce the number of pulleys, and reduce costs.

[0018] (3) The design features the combination of the lightness of the pulley and the stability of the pulley during cable laying, together with the flexible and convenient opening, thus making the cable laying more efficient and less costly. Description of the Drawings

[0019] Figure 1 is the front view of the pulley for laying the power cable of the photovoltaic power station provided by the present utility model;

[0020] Figure 2 is the side view of the pulley for laying the power cable of the photovoltaic power station provided by the present utility model;

[0021] Figure 3 is the top view of the pulley for laying the power cable of the photovoltaic power station provided by the present utility model.

[0022] Wherein, the reference numerals are: 1, lower bottom plate; 2, upper bottom plate; 3, height-adjusting bolt; 41, first fixed bracket; 42, second fixed bracket; 5, movable bracket; 61, first roller; 62, second roller; 63, third roller; 64, fourth roller. Detailed Embodiment

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described in this application are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the spirit of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0024] As Figures 1-3 shown, a pulley for laying power cables in a photovoltaic power station includes a pulley base, a pulley frame and rollers. The bottom of the pulley frame is fixedly connected to the pulley base, and the rollers are arranged on the pulley frame;

[0025] The pulley frame includes a fixed bracket and a movable bracket 5. The bottom end of the fixed bracket is fixedly connected to the pulley base, and one side of the fixed bracket near the top is connected to the movable bracket 5; preferably, the movable bracket 5 is located 20 mm downward from the top of the fixed bracket.

[0026] The fixed bracket includes a first fixed bracket 41 and a second fixed bracket 42. One end of the movable bracket 5 is rotatably connected to the second fixed bracket 42, and the other end is fixedly connected to the first fixed bracket 41 by bolts; by tightening and loosening the bolts, the opening and closing of the pulley are realized, so that during the cable laying process, the position of the pulley can be flexibly adjusted.

[0027] The pulley base includes an upper base plate 2, a lower base plate 1 and a height-adjusting bolt 3. One end of the height-adjusting bolt 3 is connected to the upper base plate 2, and the other end is connected to the lower base plate 1.

[0028] The upper base plate 2 is welded to the first fixed bracket 41 and the second fixed bracket 42. The lower base plate 1 is a detachable movable base plate, which can be buried in a pit and backfilled to increase the stability of the pulley and play the role of a ground anchor. Preferably, the first fixed bracket 41 and the second fixed bracket 42 are made of 10# square steel, and the distance between the second roller 62 and the upper base plate 2 is 30 mm.

[0029] The distance between the lower base plate 1 and the upper base plate 2 is adjusted by the height-adjusting bolt 3. When laying cables in an indoor cable tray, the upper base plate 2 and the lower base plate 1 can clamp the cable tray through the height-adjusting bolt 3 to firmly fix the pulley on the cable tray. The height-adjusting bolt 3 has the function of adjusting the distance between the upper and lower base plates, and can flexibly apply the pulley to various cable laying environments. The upper base plate 2 and the lower base plate 1 are provided with reserved holes for connecting the height-adjusting bolt 3. Preferably, the upper base plate 2 and the lower base plate 1 are iron plates with dimensions of 300 mm × 300 mm × 3 mm, and one M14 reserved hole is provided at a distance of 50 mm from the edge of the base on all four sides for inserting the height-adjusting bolt 3; the height-adjusting bolt 3 can be a threaded screw with a length of 200 mm.

[0030] The number of rollers is four. The first roller 61 is connected to the bottom of the movable bracket 5. One end of the second roller 62 is connected to the first fixed bracket 41, and the other end is connected to the second fixed bracket 42. Both ends of the third roller 63 are connected to the first fixed bracket 41, and both ends of the fourth roller 64 are connected to the second fixed bracket 42.

[0031] The first roller 61 is parallel to the second roller 62 and perpendicular to the fixed bracket. The third roller 63 and the fourth roller 64 are parallel to the fixed bracket.

[0032] This device is particularly suitable for the power cables in photovoltaic plants where the length of a single cable is long and the laying path is simple. It can greatly reduce the number of pulleys used, flexibly adjust the positions of the pulleys during the cable laying process, easily take the cable out of and place it into the pulleys, and improve the cable laying efficiency and save the pulley cost.

[0033] When laying cables in sandy land with the pulley provided by the present utility model, the pulley base can be placed in a pit, which can improve the stability of the pulley, overcome the drawback that traditional pulleys are prone to tipping over, reduce the number of pulley maintenance personnel and the maintenance time during cable laying, and directly improve the cable laying efficiency. The application of the movable bracket 4 that can be opened at the top of the pulley can achieve flexible adjustment of the pulley position and easily take the cable out of the pulley, greatly improving the laying efficiency.

[0034] The pulley provided by the present utility model can also meet the requirements of indoor cable laying. When laying cables on the cable tray in the power station indoor, the upper bottom plate 2 and the lower bottom plate 1 of this device can also be firmly fixed on the cable tray or the bracket. It can play a very good guiding and protecting role during cable laying.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit it. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: still modifications or equivalent replacements can be made to the specific implementation manners of the present utility model, and any modification or equivalent replacement that does not depart from the spirit and scope of the present utility model shall be covered by the protection scope of the claims of the present utility model.

Claims

1. A pulley for laying power cables in a photovoltaic power station, comprising a pulley base, a pulley frame and a roller, characterized in that: The bottom of the pulley frame is fixedly connected to the pulley base, and the roller is arranged on the pulley frame; The pulley frame comprises a fixed bracket and a movable bracket (5), the bottom end of the fixed bracket is fixedly connected to the pulley base, and the side of the fixed bracket close to the top end is connected to the movable bracket (5); The fixed bracket comprises a first fixed bracket (41) and a second fixed bracket (42); one end of the movable bracket (5) is rotatably connected to the second fixed bracket (42), and the other end is fixedly connected to the first fixed bracket (41) by means of bolts; The pulley base is buried in the soil or fixed on the cable bridge.

2. The pulley for laying power cables in photovoltaic power stations according to claim 1, characterized in that: The pulley base comprises an upper base plate (2), a lower base plate (1) and a height adjustment bolt (3); one end of the height adjustment bolt (3) is connected to the upper base plate (2) and the other end is connected to the lower base plate (1).

3. The pulley for laying power cables in photovoltaic power stations according to claim 2 is characterized in that: The upper base plate (2) is welded to the first fixing bracket (41) and the second fixing bracket (42); the lower base plate (1) is a movable base plate; the distance between the lower base plate (1) and the upper base plate (2) is adjusted by adjusting the height bolts (3).

4. The pulley for laying power cables in photovoltaic power stations according to claim 3 is characterized in that: The upper base plate (2) and the lower base plate (1) are provided with reserved holes for connecting height adjustment bolts (3).

5. The pulley for laying power cables in photovoltaic power stations according to claim 1, characterized in that: There are four rollers, the first roller (61) is connected to the bottom of the movable bracket (5); one end of the second roller (62) is connected to the first fixed bracket (41), and the other end is connected to the second fixed bracket (42); both ends of the third roller (63) are connected to the first fixed bracket (41), and both ends of the fourth roller (64) are connected to the second fixed bracket (42).

6. The pulley for laying power cables in photovoltaic power stations according to claim 5, characterized in that: The first roller (61) is parallel to the second roller (62) and perpendicular to the fixed bracket; the third roller (63) and the fourth roller (64) are parallel to the fixed bracket.

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