A roller device for cable laying

Abstract

A roller device for cable laying includes a bracket, a first roller, a second roller, a third roller, and a fourth roller. The bracket includes a fixed base, a column, a horizontal column, and a curved column. The column is vertically mounted on the fixed base. The first and second rollers are arranged vertically on the column, and at least one of the rollers is adjustable in position. The horizontal column is horizontally mounted on the column and located below the second roller. The third roller is adjustable in position on the horizontal column. The curved column is laterally movable and located on the side of the third roller away from the column. The curved column is connected to a spring, which provides an elastic force to move the curved column toward the column. The first, second, third, and fourth rollers enclose a cable hole for accommodating the cable. This device converts the sliding friction of the cable into rolling friction, effectively reducing the traction burden, improving laying efficiency, and protecting the cable from damage to the trench bottom. It is suitable for complex trench conditions.

Description

Technical Field

[0001] This utility model relates to the field of cable laying equipment technology, and in particular to a roller device for cable laying. Background Technology

[0002] Currently, the common method for laying cables in cable trenches is manual pulling. However, due to the large weight of the cables, the numerous bends in the trench, and the rough and uneven surface of the trench bottom, the laying process is subject to high resistance and difficulties. This not only results in low work efficiency and high labor intensity for workers, but also poses risks such as easy wear and tear on the cable sheath and damage to the insulation layer, affecting the cable's service life and the quality of the laying. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a roller device for cable laying. This device can construct a low-friction, highly directional, and adaptive continuous rolling support system in the cable trench, enabling smooth, efficient, and low-damage cable laying.

[0004] To achieve the above objectives, the present invention employs the following technical solution: a roller device for cable laying, characterized in that it comprises a support, a first roller, a second roller, a third roller, and a fourth roller. The support includes a fixed base, a column, a horizontal column, and a curved column. The column is vertically mounted on the fixed base. The first and second rollers are arranged vertically on the column, and at least one of the rollers is adjustable in position along the column. The horizontal column is horizontally mounted on the column and located below the second roller. The third roller is adjustablely mounted on the horizontal column. The curved column is laterally movable and located on the side of the third roller away from the column. The curved column is connected to a spring, which provides an elastic force to move the curved column toward the column. The fourth roller is mounted on the curved column. The first, second, third, and fourth rollers together form a cable hole for accommodating a cable.

[0005] As a further improvement of this utility model, the column is provided with at least two adjustment holes along its length direction. The first roller is mounted on the column by a bearing. The outer ring of the bearing is connected to the first roller, and the inner ring is provided with a connecting part. The connecting part has a connecting hole. A bolt passes through the connecting hole and is fixed to any one of the adjustment holes, so that the position of the first roller on the column can be adjusted.

[0006] As a further improvement of this utility model, the cross column is provided with at least two adjustment holes along its length direction, the third roller is mounted on the cross column by a bearing, the outer ring of the bearing is connected to the third roller, and the inner ring is provided with a connecting part, which has a connecting hole. A bolt passes through the connecting hole and is fixed to any of the adjustment holes, so that the position of the third roller on the cross column can be adjusted.

[0007] As a further improvement of this utility model, a movable groove is provided on the horizontal column along its length direction, the curved column is movably disposed on the movable groove, a spring seat is provided on the horizontal column, and the spring is connected between the spring seat and the curved column.

[0008] As a further improvement of this utility model, the fixing base is configured as a ground-breaking cone or an M-shaped fixing column.

[0009] As a further improvement of this utility model, each roller is provided with a ring of arc-shaped grooves around its periphery.

[0010] As a further improvement of this utility model, a handle is provided at the top of the column.

[0011] As a further improvement of this utility model, each roller is mounted on a corresponding column via bearings.

[0012] As a further improvement of this utility model, a diagonal brace is also connected between the upright column and the horizontal column.

[0013] As a further improvement of this utility model, a fixing plate is horizontally provided on the top of the column and on the fixing base respectively, and the length of the fixing plate is configured such that both ends can be embedded into the left and right side walls of the cable trench.

[0014] The beneficial effects of this invention are as follows: During cable laying, the roller device can be arranged in the cable trench, and the cable passes through the cable hole formed by the rollers, thus providing effective support and guidance for the cable. This transforms sliding friction into rolling friction, significantly reducing the labor intensity of manually pulling the cable, improving laying efficiency, saving time and effort, and accelerating the construction progress. Simultaneously, this device avoids direct friction and dragging of the cable against the rough surface of the cable trench bottom or sharp stones, effectively preventing damage to the cable sheath. Furthermore, its guiding function allows for a smooth transition of the cable at bends within the trench, avoiding sharp bends that could cause cable damage or stress concentration. This roller device also has strong applicability; the position of each roller can be adjusted to accommodate cables of different diameters. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2This is a front view of the overall structure of this utility model;

[0017] Marking description: bracket 1, fixed base 11, column 12, adjustment hole 121, handle 122, horizontal column 13, adjustment hole 131, moving groove 132, spring seat 133, limiting component 134, curved neck column 14, diagonal brace 15, fixed plate 16, first roller 2, second roller 3, third roller 4, fourth roller 5, bolt 6, connecting part 61, bolt 7, connecting part 71, spring 8, cable hole 9, cable 10. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0019] like Figure 1-2 As shown, a roller device for cable laying includes a bracket 1, a first roller 2, a second roller 3, a third roller 4, and a fourth roller 5.

[0020] The support 1 is made of metal tubing and includes a fixing base 11, a vertical column 12, a horizontal column 13, a curved column 14, and a diagonal brace 15. The fixing base 11 is configured as a ground-breaking cone or an M-shaped fixing column, and in this embodiment, an M-shaped fixing column is preferred.

[0021] The column 12 is vertically welded and fixed to the mounting base 11. The first roller 2 and the second roller 3 are rotatably mounted on the column 12, and are arranged vertically spaced apart. The first roller 2 can adjust its installation height along the vertical direction of the column 12.

[0022] In this embodiment, to implement height adjustment of the first roller 2, the column 12 is machined with at least two adjustment holes 121 along its length. The first roller 2 is mounted on the column 12 in an adjustable manner via bearings and bolts 6. Specifically, the outer ring of the bearing is connected to the first roller 2, and the inner ring is provided with a connecting part 61. The connecting part 61 has a connecting hole, and the bolt 6 passes through the connecting hole and is fixed to either adjustment hole 121, so that the position of the first roller 2 on the column 12 is adjustable to accommodate cables 10 of different diameters.

[0023] The horizontal column 13 is horizontally and fixedly welded to the left side of the column 12, and its fixed position is below the second roller 3. The third roller 4 is mounted on the horizontal column 13 by bearings and bolts 7, and its position can be adjusted along the horizontal direction of the horizontal column 13. Specifically, the horizontal column 13 is also machined with at least two adjustment holes 131 along its length. The outer ring of the bearing is connected to the third roller 4, and the inner ring is provided with a connecting part 71. The connecting part 71 has a connecting hole, and the bolt 7 passes through the connecting hole and is fixed to either adjustment hole 131, so that the position of the third roller 4 on the horizontal column 13 is adjustable. The third roller 4 cooperates with the first roller 2 to change the size of the cable hole 9 for accommodating the cable 10. The horizontal column 13 is also provided with a limiting member 134 on the side of the third roller 4 near the second roller 3. The limiting member 134 prevents the third roller 4 from colliding with the second roller 3 due to being too close.

[0024] The curved neck column 14 is laterally movable on the horizontal column 13 and is located on the side of the third roller 4 away from the vertical column 12, specifically on the left side of the third roller 4 in this embodiment. The fourth roller 5 is mounted on the curved neck column 14 via a bearing. Specifically, the horizontal column 13 has a moving groove 132 extending along its length. The bottom of the curved neck column 14 is provided with a slider structure (not shown in the figure) that cooperates with the moving groove 132, allowing it to slide along the moving groove 132. A spring seat 133 is fixedly installed at the leftmost end of the horizontal column 13. The two ends of a spring 8 are respectively connected to the spring seat 133 and the curved neck column 14. Under the preload of the spring 8, the curved neck column 14 is always subjected to an elastic thrust toward the vertical column 12. Through this structure, the cable 10 can be gently but reliably pressed toward the center of the cable hole 9, stably constraining the cable 10 in the cable hole 9 and preventing the cable 10 from slipping laterally during laying due to tension changes, bumps, or slight bends.

[0025] The second roller 3 and the fourth roller 5 are also mounted on the column 12 and the curved column 14 via bearings. Specifically, the outer ring of the bearing is connected to the roller, and the inner ring is welded and fixed to the corresponding column, thereby realizing the installation of the roller.

[0026] The first roller 2, the second roller 3, the third roller 4, and the fourth roller 5 are each surrounded by an arc-shaped groove, which together form an approximately circular cable hole 9 through which the cable 10 can pass. These rollers collectively support and guide the cable 10, maximizing the rolling contact area and effectively converting sliding friction into rolling friction.

[0027] To facilitate the handling and installation of the device by operators, a handle 122 is welded to the top of the column 12. In addition, to further enhance the overall structural strength and stability of the support 1, a diagonal brace 15 is welded between the column 12 and the horizontal column 13.

[0028] A fixing plate 16 is horizontally arranged on the top of the column 12 and on the fixing base 11. The length of the fixing plate 16 is configured so that both ends can be embedded into the left and right side walls of the cable trench. The top fixing plate 16 has a groove, which is the same length as the fixing plate 16 and the width is the same as or slightly wider than the fixing handle 122, so that the fixing plate 16 can be snapped onto the fixing handle 122. The bottom fixing plate 16 is directly snapped onto the M-shaped fixing column structure of the fixing base 11. When the roller device is installed on the cable trench, the left and right ends of the fixing plate 16 are embedded into the grooves on the left and right side walls of the cable trench, thereby fixing the roller device and preventing the roller device from tipping over during cable pulling.

[0029] During cable laying, the positions of the first roller 2 and the third roller 4 are adjusted by fixing the holes of bolts 6 and 7 according to the diameter of the cable 10 to be laid, forming a roughly suitable cable hole 9. Then, multiple roller devices with adjusted roller positions are arranged along the length of the cable trench. It is important to note that a roller device must be placed at the corner of the cable trench, located on the inner bend side of the corner. The angle of the roller device is adjusted so that the direction of the cable hole 9 formed by the four rollers is precisely aligned with the tangent direction of the turn, facilitating the smooth passage of the cable 10 through the corner. After the roller devices are arranged, the cable 10 is manually passed through the cable holes 9 of each roller device in sequence. The cable 10 is simultaneously supported and guided by the four rollers, and the leftmost spring 8 continuously presses the cable 10 stably into the center of the cable hole 9, effectively preventing lateral slippage. Four to six workers pull the cable 10 at the end point. Because the friction mode is changed to efficient rolling friction, the pulling process is very easy. In straight sections, cable 10 rolls smoothly forward supported by four rollers; at bends, the roller assembly precisely adjusts its direction, allowing cable 10 to transition smoothly with minimal lateral friction; the M-shaped fixing post ensures the stability of the device under traction and lateral turning forces, without swaying or displacement. This roller device is particularly suitable for complex sections with uneven trench bottoms, slopes, or bends, effectively protecting the cable 10 sheath, preventing stress concentration, and greatly reducing laying resistance.

[0030] The above-described embodiments are merely illustrative of this utility model. Any equivalent embodiments made by those skilled in the art without departing from the technical features disclosed in this utility model, and without departing from the technical features of this utility model, shall still fall within the scope of the technical features of this utility model.

Claims

1. A roller device for cable laying, characterized by: The device includes a bracket, a first roller, a second roller, a third roller, and a fourth roller. The bracket includes a fixed base, a column, a horizontal column, and a curved column. The column is vertically mounted on the fixed base. The first and second rollers are arranged vertically on the column, and at least one of the rollers is adjustable along the column. The horizontal column is horizontally mounted on the column and located below the second roller. The third roller is adjustablely mounted on the horizontal column. The curved column is laterally movable and located on the side of the third roller away from the column. The curved column is connected to a spring that provides an elastic force to move the curved column toward the column. The fourth roller is mounted on the curved column. The first, second, third, and fourth rollers together form a cable hole for accommodating a cable.

2. A roller device for cable laying according to claim 1, characterized in that: The column is provided with at least two adjustment holes along its length. The first roller is mounted on the column by a bearing. The outer ring of the bearing is connected to the first roller, and the inner ring is provided with a connecting part. The connecting part has a connecting hole. A bolt passes through the connecting hole and is fixed to any of the adjustment holes, so that the position of the first roller on the column can be adjusted.

3. A roller device for cable laying according to claim 1, characterized in that: The crossbar has at least two adjustment holes along its length. The third roller is mounted on the crossbar by a bearing. The outer ring of the bearing is connected to the third roller, and the inner ring is provided with a connecting part. The connecting part has a connecting hole. A bolt passes through the connecting hole and is fixed to any of the adjustment holes, so that the position of the third roller on the crossbar is adjustable.

4. A roller device for cable laying according to claim 1, characterized in that: A movable groove is provided on the cross column along its length direction, the curved column is movably disposed on the movable groove, a spring seat is provided on the cross column, and the spring is connected between the spring seat and the curved column.

5. A roller device for cable laying according to claim 1, characterized in that: The fixing base is configured as a ground-breaking cone or an M-shaped fixing column.

6. A roller device for cable laying according to claim 1, characterized in that: Each roller has a circular groove around its periphery.

7. A roller device for cable laying according to claim 1, characterized in that: A handle is provided at the top of the column.

8. A roller device for cable laying according to claim 1, characterized in that: Each roller is mounted on its corresponding column via bearings.

9. A roller device for cable laying according to claim 1, characterized in that: The uprights and crossbars are also connected by diagonal braces.

10. A roller device for cable laying according to claim 1, characterized in that: A fixing plate is horizontally installed on the top of the column and on the fixing base, and the length of the fixing plate is configured such that both ends can be embedded into the left and right side walls of the cable trench.

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