A cable laying anti-drop guide pulley device

Abstract

This application provides a cable laying anti-detachment guide pulley device, including a vertical frame and a horizontal frame connected to each other to form an L-shaped mounting frame. Three rollers are provided on the inner side of the mounting frame. The first and second rollers are rotatably connected to the vertical frame, horizontally arranged side-by-side, with their rotation axes perpendicular to the horizontal frame. The third roller is rotatably connected to the horizontal frame, located between the first and second rollers, with its rotation axis perpendicular to the vertical frame. A limiting roller mechanism is connected between the opposite sides of the vertical and horizontal frames. The limiting roller mechanism can cooperate with the three rollers to surround the outside of the cable. The limiting roller mechanism includes two roller assemblies, each comprising a connecting shaft and a roller rotatably connected to the connecting shaft. One end of the connecting shaft is hinged to the mounting frame, and the other end is hinged to the end of another connecting shaft. This device, through the limiting roller mechanism and the three rollers, can surround the cable, preventing it from detaching from the device, causing derailment, and affecting cable traction.

Description

Technical Field

[0001] This utility model relates to the field of cable laying technology, specifically to an anti-detachment guide pulley device for cable laying. Background Technology

[0002] Cable laying is a core component of infrastructure construction for power, communications, and other industries. It involves laying cables underground, in utility tunnels, or on overhead supports according to design requirements to ensure the safe and stable transmission of electrical energy or signals. Cable laying pulleys are used during the laying process to reduce traction resistance and protect the cable's outer protective sheath from wear or damage.

[0003] Figure 1 This is a pulley system used in current cable laying operations, applicable to both straight laying and bends. During laying, the cable slides within the angle formed by the cooperation of horizontal and vertical pulleys. However, most cables are quite rigid, especially some thicker cables, and when pulled from the cable reel, they extend in a spiral bend, passing through... Figure 1 When the pulley is used for aligning the cable, the cable is curved and can easily jump out from the angle between the horizontal and vertical pulleys, causing derailment. This does not achieve the advantages of using a pulley. It requires constant manual inspection and adjustment, which is a waste of manpower and not convenient enough. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a cable laying anti-detachment guide pulley device.

[0005] The technical solution of this utility model is as follows:

[0006] A cable laying anti-detachment guide pulley device includes a vertical frame and a horizontal frame, which are connected to each other to form an L-shaped mounting frame. The inner side of the mounting frame is provided with three rollers, wherein the first roller and the second roller are rotatably connected to the vertical frame, are horizontally arranged side by side, and their rotation axes are perpendicular to the horizontal frame; the third roller is rotatably connected to the horizontal frame, located between the first roller and the second roller, and its rotation axis is perpendicular to the vertical frame.

[0007] A limiting wheel mechanism is connected between the edges of the vertical frame and the horizontal frame that are far apart from each other. The limiting wheel mechanism can cooperate with three rollers to surround the outside of the cable.

[0008] The limiting wheel mechanism includes two wheel assemblies. Each wheel assembly includes a connecting shaft and a wheel rotatably connected to the connecting shaft. One end of the connecting shaft is hinged to the mounting bracket, and the other end is hinged to the end of another connecting shaft.

[0009] Furthermore, a hinge is axially slidably connected to the connecting shaft. The hinge is detachably hinged to the mounting bracket. A spring is provided between the connecting shaft and the hinge, thereby enabling the rotating wheel to move axially. This allows the limiting rotating wheel mechanism to arch up as a whole, increasing the area enclosed by it and the three rollers, so that even if the cable has a large bend, it can pass through smoothly.

[0010] Furthermore, the hinge is in the shape of an angle plate, in which two plates are perpendicularly connected to each other. One plate is hinged to the mounting bracket, and the other plate is provided with a sliding hole. One end of the connecting shaft passes through the sliding hole and is provided with a fixing nut at the end. The spring is sleeved on the connecting shaft and is located between the sliding hole and the fixing nut.

[0011] Furthermore, the two rotating wheel assemblies are able to swing in the vertical plane of the vertical frame and the horizontal frame, and the included angle between the two rotating wheel assemblies is opposite to the included angle between the vertical frame and the horizontal frame, and is less than 180 degrees.

[0012] Preferably, the included angle between the two rotating wheel assemblies varies from 90 to 120 degrees.

[0013] Furthermore, the two wheel assemblies are staggered and located in two vertical planes of the vertical frame and the horizontal frame, respectively.

[0014] Furthermore, the wheels are conical, and the smaller diameter end of each wheel is close to the hinge point.

[0015] Furthermore, the axial length of the rotary wheel is less than the length of the roller, but greater than 3 / 4 of the length of the roller.

[0016] Furthermore, the limiting roller mechanism is located between the third roller and the first roller or the second roller.

[0017] Furthermore, all three rollers are tapered, with the smaller diameter end located near the connection between the vertical and horizontal frames.

[0018] This utility model provides a cable laying anti-detachment guide pulley device. Through a limiting rotating wheel mechanism, it can surround the cable with three rollers, preventing the cable from detaching from the device, thus avoiding derailment and affecting cable traction. Furthermore, the rotating wheels in the two rotating wheel assemblies can slide axially with the connecting shaft, increasing the area enclosed by the limiting rotating wheel mechanism and the three rollers, improving cable passage, and also providing a clamping effect on the cable. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of an existing pulley;

[0021] Figure 2 This is a schematic diagram of the anti-detachment guide pulley device of this utility model.

[0022] The components represented by the various reference numerals in the diagram are:

[0023] 1. Mounting bracket; 11. Vertical bracket; 12. Horizontal bracket; 2. Roller; 21. First roller; 22. Second roller; 23. Third roller; 3. Limiting roller mechanism; 31. Roller assembly; 311. Connecting shaft; 312. Roller; 313. Hinge; 314. Spring; 315. Fixing nut. Detailed Implementation

[0024] like Figure 2 As shown, this utility model embodiment provides a cable laying anti-detachment guide pulley device, including a vertical frame 11 and a horizontal frame 12, which are connected to each other to form an L-shaped mounting frame 1. The inner side of the mounting frame 1 is provided with three rollers 2, wherein the first roller 21 and the second roller 22 are rotatably connected to the vertical frame 11, are horizontally arranged side by side, and the rotation axis is perpendicular to the horizontal frame 12. The third roller 23 is rotatably connected to the horizontal frame 12, located between the first roller 21 and the second roller 22, and the rotation axis is perpendicular to the vertical frame 11.

[0025] A limiting wheel mechanism 3 is connected between the edges of the vertical frame 11 and the horizontal frame 12 that are far apart from each other. The limiting wheel mechanism 3 can cooperate with three rollers 2 to surround the outside of the cable.

[0026] The limiting wheel mechanism 3 includes two wheel assemblies 31. Each wheel assembly 31 includes a connecting shaft 311 and a wheel 312 rotatably connected to the connecting shaft 311. One end of the connecting shaft 311 is hinged to the mounting bracket 1, and the other end is hinged to the end of the other connecting shaft 311.

[0027] The cable laying anti-detachment guide pulley device of this application can surround the cable with three rollers 2 through the limiting wheel mechanism 3, so as to prevent the cable from detaching from the device, causing the cable to derail and affecting the cable traction.

[0028] In detail, the mounting frame 1 can be made by bending and welding steel pipes. The mounting frame 1 is equipped with a fixing part, which is connected to the ground or other objects to fix the mounting frame 1 in place. (As in this...) Figure 2 As shown in the figure, in this embodiment, the horizontal frame 12 is provided with two metal strips, and bolt holes are opened on the metal strips. The mounting frame 1 is fixed by bolts or pins cooperating with the metal strips.

[0029] Three rollers 2 are located inside the mounting frame 1. Both the horizontal frame 12 and the vertical frame 11 have several support parts protruding inwards from the mounting frame 1. The two ends of the rotating shafts of the first roller 21 and the second roller 22 are connected to the support parts of the vertical frame 11, and the two ends of the rotating shaft of the third roller 23 are connected to the support parts of the horizontal frame 12. Among them, the first roller 21 and the second roller 22 are arranged side by side horizontally along the vertical frame 11 with their rotating shafts extending vertically, and the rotating shaft of the third roller 23 extends horizontally, perpendicular to the vertical frame 11, and the end of the third roller 23 closest to the vertical frame 11 is located between the lower ends of the first roller 21 and the second roller 22.

[0030] In this embodiment, all three rollers 2 are conical wheels, with the smaller diameter end close to the connection between the vertical frame 11 and the horizontal frame 12, so that when the cable slides on the three rollers 2, the three rollers 2 generate an axial component force on the cable, which helps to keep the cable in the included angle formed by the three rollers 2.

[0031] The limiting wheel mechanism 3 is positioned between the third roller 23 and the first roller 21 or the second roller 22, so that the limiting wheel mechanism 3 is as close as possible to the rollers 2 on the horizontal frame 12 and the vertical frame 11, thereby improving the limiting effect of the limiting wheel mechanism 3.

[0032] In some other embodiments, two limiting wheel mechanisms 3 may be provided, located between the third roller 23 and the first roller 21, and between the third roller 23 and the second roller 22, respectively, to further improve the limiting effect of the limiting wheel mechanism 3.

[0033] The two rotating wheel assemblies 31 have identical structures. The rotating wheel 312 of the rotating wheel assembly 31 is rotatably connected to the connecting shaft 311 via bearings. The end of the two connecting shafts 311 that is hinged to each other extends a short distance beyond the rotating wheel 312 to avoid a large gap between the two rotating wheels 312, thereby preventing the cable from being clamped when applied to thinner cables. The other end of the connecting shaft 311 extends a longer distance beyond the rotating wheel 312, and a hinge member 313 is axially slidably connected to the connecting shaft 311 at this end. The hinge member 313 is detachably hinged to the mounting bracket 1, and a spring 314 is provided between the connecting shaft 311 and the hinge member 313.

[0034] The hinge 313 allows for easy disassembly and assembly of the rotating wheel assembly 31, facilitating storage and transportation. Simultaneously, the connecting shaft 311 can slide axially relative to the hinge 313, stretching the limiting rotating wheel mechanism 3 as a whole. As the limiting rotating wheel mechanism 3 is stretched, the two rotating wheel assemblies 31 rotate outwards within the vertical plane of the vertical frame 11 and the horizontal frame 12, causing the limiting rotating wheel mechanism 3 to arch, increasing the area enclosed by it and the three rollers 2, allowing the cable to pass smoothly even with significant bending.

[0035] More specifically, the hinge 313 is shaped like an angle plate. Of the two perpendicularly connected plates, one plate is hinged to the mounting bracket 1, and the other plate has a sliding hole. One end of the connecting shaft 311 passes through the sliding hole and has a fixing nut 315 at its end. The spring 314 is sleeved on the connecting shaft 311 and is located between the sliding hole and the fixing nut 315. When the cable bends, it will drag the connecting shaft 311 away from the hinge 313. At this time, the spring 314 is compressed, and a binding force is applied to the cable through the spring 314, so that the cable returns as far as possible between the three rollers 2.

[0036] A retaining ring is also provided on the connecting shaft 311. The retaining ring is located between the rotating wheel 312 and the hinge 313 to prevent the rotating wheel 312 from rubbing against the hinge 313.

[0037] The hinge 313 is provided with a hinge ring, and the mounting frame 1 is provided with an ear ring on the side near the rotating wheel assembly 31. The hinge 313 is detachably hinged to the mounting frame 1 by bolts passing through the hinge ring and the ear ring. In use, the device of this embodiment can first place the cable on the roller 2, then hinge one end of the limiting rotating wheel mechanism 3 to the side of the horizontal frame 12, then rotate the limiting rotating wheel mechanism 3 so that it hooks from the outside of the cable to the side of the vertical frame 11, and then connect the other end of the limiting rotating wheel mechanism 3 with bolts.

[0038] In this embodiment, one end of each of the two rotating wheel assemblies 31 is hinged to each other, allowing them to swing within the vertical plane of the vertical frame 11 and the horizontal frame 12. An angle is formed between the two rotating wheel assemblies 31, which is opposite to the angle between the vertical frame 11 and the horizontal frame 12, and is less than 180 degrees. The reason for preferably setting the angle between the two rotating wheel assemblies 31 to less than 180 degrees is to ensure that the axes of the two rotating wheels 312 are not parallel or collinear. This ensures that the outer surface of the cable contacts the rotating wheel 312 rather than the edge between the two rotating wheels 312, preventing the cable from getting stuck in the gap between the two rotating wheels 312 or from rubbing against the edge of the rotating wheel 312 end, causing cuts or damage.

[0039] Preferably, the included angle between the two rotating wheel assemblies 31 varies from 90 to 120 degrees.

[0040] Furthermore, the two rotating wheel assemblies 31 are staggered and located in the two vertical planes of the vertical frame 11 and the horizontal frame 12, respectively, thereby allowing the ends of the two rotating wheels 312 to be closer to each other.

[0041] The axial length of the roller 312 is less than the length of the roller 2, but greater than 3 / 4 of the length of the roller 2. When the roller 312 is not in contact with the cable, the end of the roller 312 near the hinge 313 does not exceed the outermost contour of the roller 2 next to the hinge 313. The outermost contour of the roller 2 is the busbar of the roller 2 that is farthest from the mounting bracket 1.

[0042] In this embodiment, the rotating wheel 312 is preferably a conical wheel, and the smaller diameter end of the two rotating wheels 312 is close to the hinge point between them. This allows the rotating wheel 312 to apply a component force to the cable, which moves towards the hinge point of the two rotating wheels 312, pushing the cable towards the angle between the two rotating wheel assemblies 31. This avoids the cable sliding towards the angle formed between the rotating wheel 312 and the roller 2. In this way, it is not necessary to design the rotating wheel 312 to be longer to avoid the problem of gaps between the rotating wheel 312 and the roller 2 caused by the axial sliding of the rotating wheel 312 with the connecting shaft 311, thereby reducing material usage and lowering costs.

Claims

1. A cable laying anti-drop guide pulley device characterized by, It includes a vertical frame (11) and a horizontal frame (12), which are connected to each other to form an L-shaped mounting frame (1). The inner side of the mounting frame (1) is provided with three rollers (2), wherein the first roller (21) and the second roller (22) are rotatably connected to the vertical frame (11), are horizontally arranged side by side, and the axis of rotation is perpendicular to the horizontal frame (12). The third roller (23) is rotatably connected to the horizontal frame (12), located between the first roller (21) and the second roller (22), and the axis of rotation is perpendicular to the vertical frame (11). A limiting wheel mechanism (3) is connected between the sides of the vertical frame (11) and the horizontal frame (12) that are far apart from each other. The limiting wheel mechanism (3) can cooperate with three rollers (2) to surround the outside of the cable. The limiting wheel mechanism (3) includes two wheel assemblies (31). The wheel assembly (31) includes a connecting shaft (311) and a wheel (312) rotatably connected to the connecting shaft (311). One end of the connecting shaft (311) is hinged to the mounting bracket (1), and the other end is hinged to the end of another connecting shaft (311).

2. The anti-drop guide pulley device for cable laying according to claim 1, characterized in that, A hinge (313) is axially slidably connected to the connecting shaft (311). The hinge (313) is detachably hinged to the mounting bracket (1). A spring (314) is provided between the connecting shaft (311) and the hinge (313).

3. The cable laying anti-detachment guide pulley device as described in claim 2, characterized in that, The hinge (313) is in the shape of an angle plate. Of the two plates that are perpendicular to each other, one plate is hinged to the mounting bracket (1), and the other plate is provided with a sliding hole. One end of the connecting shaft (311) passes through the sliding hole and is provided with a fixing nut (315) at the end. The spring (314) is sleeved on the connecting shaft (311) and is located between the sliding hole and the fixing nut (315).

4. The cable laying anti-detachment guide pulley device as described in claim 3, characterized in that, The two wheel assemblies (31) are able to swing in the vertical plane of the vertical frame (11) and the horizontal frame (12). The angle between the two wheel assemblies (31) is opposite to the angle between the vertical frame (11) and the horizontal frame (12) and is less than 180 degrees.

5. The cable laying anti-detachment guide pulley device as described in claim 4, characterized in that, The angle between the two rotating wheel assemblies (31) varies from 90 to 120 degrees.

6. The cable laying anti-detachment guide pulley device as described in claim 3, characterized in that, The two rotating wheel assemblies (31) are staggered and located in the two vertical planes of the vertical frame (11) and the horizontal frame (12), respectively.

7. The cable laying anti-detachment guide pulley device as described in claim 1, characterized in that, The rotating wheel (312) is a conical wheel, and the smaller diameter end of the two rotating wheels (312) is close to the hinge point.

8. The cable laying anti-detachment guide pulley device as described in claim 1, characterized in that, The axial length of the rotating wheel (312) is less than the length of the roller (2) and greater than 3 / 4 of the length of the roller (2).

9. A cable laying anti-derailment guide pulley device as described in any one of claims 1-8, characterized in that, The limiting wheel mechanism (3) is located between the third roller (23) and the first roller (21) or the second roller (22).

10. The cable laying anti-detachment guide pulley device as described in claim 1, characterized in that, All three rollers (2) are conical, with the smaller diameter end close to the connection between the vertical frame (11) and the horizontal frame (12).

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