Portable bending device for cable laying site

Abstract

The utility model discloses a portable bending device on a cable laying site. The portable bending device comprises a cable placing support, a monkey climbing rod jack, an arc-shaped pressing plate and a horizontal stress rod. A horizontal placing rod of the cable placing support is erected along a cable laying path and is used for bearing a cable. A self-ejection locking mechanism of the monkey pole-climbing jack is connected with the handle, and the lifting plate and the top supporting rod are driven to move on the top supporting rod with the hole according to the state change of the handle. The arc-shaped pressing plate is installed at the end of the top supporting rod, and the inner side face is an arc-shaped groove wall matched with a cable and can be replaced according to needs. The horizontal stress rod is fixed below the adjacent placing rods and connected with the lifting plate to transmit stress, and the two ends of the horizontal stress rod are hung on the placing rods through sliding positioning hanging pieces with hooks to achieve stability. The lifting plate is provided with a clamping groove and anti-skid concave-convex grains, and the arc-shaped pressing plate is provided with a reinforcing rib and a flexible or elastic cushion. The cable bending device is ingenious in structure, capable of bending cables efficiently and accurately, suitable for various cable specifications, convenient to operate and capable of protecting the cables.

Description

Technical Field

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

[0002] During operation, cables expand and contract due to thermal expansion and contraction caused by current flow and changes in ambient temperature. If cables are laid in a straight line, the stress generated by expansion when the temperature rises has nowhere to dissipate, potentially leading to cable deformation, damage, or even breakage. A serpentine laying pattern, with its intentionally designed bends, provides a certain amount of leeway for cable expansion and contraction. When the cable expands due to heat, it can stretch in the serpentine bends to absorb the expansion; when the temperature drops, the cable contracts, and the serpentine bends can contract accordingly, thus avoiding damage caused by excessive stress from thermal expansion and contraction. When cables are subjected to external mechanical vibrations, the vibration waves propagate along the cable. The bends in a serpentine laying pattern can alter the propagation path of these vibration waves, causing reflection, scattering, and interference at the bends, effectively dissipating vibration energy and reducing the impact of vibration on the cable. Furthermore, serpentine cables possess a degree of flexibility and elasticity, which can buffer and absorb vibration to some extent, reducing fatigue damage and wear caused by vibration.

[0003] In existing technologies, electric bending devices are commonly used to assist in bending cables. However, the process of installing and dismantling such devices is cumbersome and time-consuming. Often, several devices need to work simultaneously to improve efficiency, which leads to increased costs in various aspects. Therefore, providing a convenient, efficient, and easy-to-use device is a current technological need. Summary of the Invention

[0004] To address the shortcomings and deficiencies of the existing technology, the inventor has designed a convenient device specifically for bending cables during cable laying. This device aims to efficiently, accurately, and conveniently handle the bending and shaping work required during cable laying, ensuring the smooth progress and quality of the cable laying project. Specifically, this invention is implemented as follows:

[0005] A convenient cable bending device for cable laying sites includes: a cable placement bracket installed along the path where the cable needs to be laid, including several horizontally extending placement rods; a jack including a lifting plate, a self-locking mechanism, a handle, and a perforated top support rod; the self-locking mechanism is connected to the operating handle and can alternately lever-drive the lifting plate and the perforated top support rod to move relative to each other by changing the state of the operating handle; an arc-shaped pressure plate is installed at the bottom or top end of the perforated top support rod, with an arc-shaped groove wall on the inner side; a horizontal force-bearing rod is fixed below adjacent placement rods at the same horizontal position, and the lower or upper part of the middle part is in contact with the lifting plate to bear the force when the operating handle is used.

[0006] Furthermore, the front surface of the lifting plate has a groove, the width of which is not less than the width of the horizontal force-bearing rod.

[0007] Furthermore, the horizontal force-bearing rod is fitted with sliding positioning brackets at both ends, and each sliding positioning bracket extends upward with at least one hook. The shape and size of the hook are adapted to the width and thickness of the placement rod, and can be hooked onto the placement rod.

[0008] Furthermore, the arc-shaped pressure plate is installed in a replaceable manner, and has arc-shaped pressure plates of various sizes and specifications. The arc shape of the arc-shaped pressure plate is adapted to the thickness of the cable that needs to be bent.

[0009] Furthermore, the outer back of the arc-shaped pressure plate is provided with vertically placed reinforcing ribs, and the inner side is provided with flexible pads or elastic pads.

[0010] Furthermore, the front surface of the lifting plate is provided with anti-slip textured grooves.

[0011] The working principle of this utility model is as follows: This utility model mainly consists of a cable placement bracket, a monkey-climbing jack, an arc-shaped pressure plate, and horizontal force-bearing rods. Several horizontal extension rods of the cable placement bracket support cables and other facilities, and also provide basic force support for bending operations. The monkey-climbing jack, as the core power and operating component, achieves its operation through the interaction of its lifting plate, self-locking mechanism, handle, and perforated top support rod. The arc-shaped pressure plate is installed at the end of the perforated top support rod, directly contacting the cable and applying pressure to bend it downwards or upwards during operation. The horizontal force-bearing rod transmits operating force and fixes the position of related components. The self-locking mechanism is connected to the operating handle. When the operator operates the handle, the self-locking mechanism, based on the change in the handle's state, lever-driven the lifting plate and the perforated top support rod to move relative to each other. Specifically, the operation of the handle changes the state of the self-locking mechanism, allowing it to drive the lifting plate to move upwards or downwards relative to the perforated top support rod. Since the horizontal force-bearing rod is in contact with the lifting plate, the operating force is transmitted to the entire device through the horizontal force-bearing rod, causing the perforated top support rod and its end arc-shaped pressure plate to move accordingly, thereby bending the cable placed on the cable placement bracket's placement rod. The horizontal force-bearing rod is fixed at the same horizontal position below the adjacent placement rod, with its middle section in contact with the lifting plate. On one hand, it effectively transmits the force applied by the maneuvering jack's operating handle, ensuring coordinated operation of the entire device. On the other hand, the sliding positioning brackets fitted at both ends of the horizontal force-bearing rod are hooked onto the cable placement bracket's placement rod, ensuring the relative stability of the horizontal force-bearing rod during operation, eliminating the need for manual support and allowing it to remain stable even during intermittent operation.

[0012] The beneficial technical effects of this utility model are as follows: The overall structure of the device is reasonably designed, and all components work together in coordination. By operating the handle of the monkey-climbing jack, and utilizing the lever-like actions between the self-spring locking mechanism, lifting plate, and perforated top support rod, a single person can easily and quickly perform cable bending operations. The operation process is relatively simple, requiring no complicated procedures or excessive manpower. It can perform cable bending work at fixed points and in fixed quantities on-site. The arc-shaped pressure plate adopts a replaceable installation method and is available in various arc sizes. It can be flexibly selected and adapted according to the thickness of the cable to be bent, ensuring that a suitable pressure plate fits when bending cables of different specifications. This guarantees the bending effect while expanding the applicability of the device, and can meet the bending needs of various cable laying scenarios. The manual bending device has a relatively simple structure, fewer parts, and is easy to install and set up. At the construction site, workers can quickly install and set up cable placement brackets and rapidly assemble other components such as jacks, curved pressure plates, and horizontal support bars. Unlike electric bending devices, which require complex electrical connections, debugging, and parameter settings, manual bending devices save significant preparation time and allow for faster deployment of cable bending operations. Electric bending devices are typically designed and manufactured to meet specific standards or common cable specifications. For special or non-standard cable laying scenarios, additional adjustments or replacements of equipment components may be necessary, potentially involving specialized technicians and lengthy preparation time. Manual bending devices, with their simple structure and easily replaceable curved pressure plates, can more quickly adapt to cables of different thicknesses and materials, as well as various complex laying path requirements. They can be adjusted and put into operation more quickly in special conditions. Maintenance of manual bending devices is relatively easy; typically, only periodic checks of loose connections and proper lubrication are required, without the need for specialized electrical repair skills or complex testing equipment. Even if minor malfunctions occur during operation, they can generally be quickly diagnosed and repaired using simple tools and methods, without significantly impacting work progress. Furthermore, the failure rate is much lower than that of electric bending devices, making it more popular with operators in certain specialized situations. Attached Figure Description

[0013] Figure 1 A three-dimensional structural diagram of a convenient bending device for cable laying sites;

[0014] Figure 2 A three-dimensional structural diagram of a monkey-climbing pole jack, a convenient bending device for cable laying sites;

[0015] Figure 3 A schematic diagram illustrating the usage effect of a convenient cable bending device at a cable laying site.

[0016] Figure 4 , 5 A schematic diagram illustrating the motion principle of a monkey-climbing pole jack, a convenient bending device for cable laying sites.

[0017] Among them: 1—Cable placement bracket, 2—Cable, 3—Placement rod, 4—Monkey climbing pole jack, 5—Lifting plate, 6—Self-spring locking mechanism, 7—Handle, 8—Top support rod with hole, 9—Arc-shaped pressure plate, 10—Horizontal force-bearing rod, 11—Slot, 12—Sliding positioning bracket, 13—Reinforcing rib. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0019] Example 1: Practical operation example of a convenient cable bending device for cable laying sites:

[0020] First, according to the path that cable 2 needs to be laid, the cable placement bracket 1 is installed along the wall. The bracket consists of several horizontally extending placement rods 3, which provide a stable base platform for the subsequent placement of cable 2 and the entire bending operation.

[0021] Next, select an appropriately sized arc-shaped pressure plate 9 and install it on the bottom end of the perforated top support rod 8 of the monkey climbing jack 4. Here, we assume the bottom end is used to bend the cable 2 downwards. The selection is based on the thickness of the cable 2 to be bent, ensuring that the arc shape of the pressure plate 9 matches the cable 2 to achieve a good bending effect and avoid damage to the cable 2. The vertical reinforcing ribs 13 on the outer back of the arc-shaped pressure plate 9 enhance its structural strength, while the flexible or elastic pads on the inner side protect the cable 2 during bending.

[0022] Then, the horizontal support rod 10 is installed below the adjacent placement rod 3 at the same horizontal position via the sliding positioning brackets 12 fitted at both ends. Specifically, the hooks extending upwards from the sliding positioning brackets 12 are hung on the placement rod 3. The shape and size of the hooks are adapted to the width and thickness of the placement rod 3 to ensure a stable installation. The sliding positioning brackets 12 are designed to slide on the horizontal support rod 10 to easily accommodate the spacing between two adjacent placement rods 3. After installation, the middle position of the horizontal support rod 10 will contact and connect with the lifting plate 5 of the jack 4. The width of the groove 11 on the front surface of the lifting plate 5 is not shorter than the width of the horizontal support rod 10, and the anti-slip texture within the groove 11 increases the friction when the two contact, making the connection more stable and reliable.

[0023] The operator grips the operating handle 7 of the monkey-climbing jack 4 and begins the bending operation. The operator pulls the handle 7 downwards, which changes the state of the self-locking mechanism 6, causing it to lever-drive the lifting plate 5 downwards relative to the perforated top support rod 8. Because the horizontal force-bearing rod 10, under the force of the lifting plate 5, cannot move upwards due to its two ends being fixed to the placement rod 3 by hooks, this force is transmitted to the perforated top support rod 8. This causes the perforated top support rod 8 and its end arc-shaped pressure plate 9 to move downwards, applying pressure to the cable 2 and gradually bending it.

[0024] During the bending process, the operator can flexibly adjust the amplitude and force of the operating handle 7 according to the bending condition of the cable 2 and actual needs. For example, if it is found that the bending speed of the cable 2 is too fast or the bending degree is insufficient, the operating force of the handle 7 can be appropriately reduced or increased. The principle of the self-spring locking mechanism 6 is existing technology and will not be explained in detail in this embodiment.

[0025] Once cable 2 is bent to the desired degree, the operator stops operating handle 7. At this point, the self-locking mechanism 6 locks again, maintaining the current state of the device. Cable 2 remains bent under the pressure of the arc-shaped pressure plate 9 for a period of time, allowing it to adapt to and fix this bending shape. After bending is complete, the operator can swing the reversing gear to reverse the operation of handle 7, unlocking the self-locking mechanism 6 and causing the lifting plate 5 and the perforated top support rod 8 to return to their initial positions, releasing the pressure on cable 2. At this point, the bent cable 2 can be removed from the cable placement bracket 1 for subsequent laying work, or the bending operation can be repeated for the next section of cable 2.

[0026] Example 2: Based on Example 1, when it is necessary to bend the cable 2 upwards, the arc-shaped pressure plate 9 is placed on the ground as a support. An arc-shaped pad with a suitable curvature is fitted at the bottom of the part of the cable 2 that needs to bear force, covering the side wall and bottom of the cable 2 as much as possible. A lifting ring that can be connected and disassembled is fitted around the arc-shaped pad. The lifting ring is hoisted and installed with the lifting plate 5 by the lifting rope. By pressing the pressure handle, the cable 2 can be lifted upwards, thus bending the cable 2 upwards.

[0027] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A convenient bending device for cable laying sites, characterized in that... include: The cable placement bracket (1) is installed along the path where the cable (2) needs to be laid, including several horizontally extending placement poles (3); The monkey climbing pole jack (4) includes a lifting plate (5), a self-spring locking mechanism (6), a handle (7), and a perforated top support rod (8); the self-spring locking mechanism (6) is connected to the operating handle (7), and can alternately drive the lifting plate (5) and the perforated top support rod (8) to move relative to each other by levering the state change of the operating handle (7); An arc-shaped pressure plate (9) is installed at the bottom end or top end of the perforated top support rod (8), and its inner side is an arc-shaped groove wall. A horizontal force-bearing rod (10) is fixed below adjacent placement rods (3) at the same horizontal position, and the lower or upper part of the middle part is connected to the lifting plate (5) in contact, for bearing the force when operating the handle (7).

2. The convenient bending device according to claim 1, characterized in that, The front surface of the lifting plate (5) has a slot (11), the width of which is not less than the width of the horizontal force bar (10).

3. The convenient bending device according to claim 1, characterized in that, The horizontal force-bearing rod (10) is fitted with sliding positioning hangers (12) at both ends. The sliding positioning hangers (12) extend upward with at least one hook. The shape and size of the hook are adapted to the width and thickness of the placement rod (3) and can be hooked onto the placement rod (3).

4. The convenient bending device according to claim 1, characterized in that, The arc-shaped pressure plate (9) is installed in a replaceable installation method and has arc-shaped pressure plates (9) of various sizes. The arc shape of the arc-shaped pressure plate (9) is adapted to the thickness of the cable (2) that needs to be bent.

5. The convenient bending device according to claim 1, characterized in that, The outer back of the arc-shaped pressure plate (9) is provided with vertically placed reinforcing ribs (13), and the inner side is provided with flexible pads or elastic pads.

6. The convenient bending device according to claim 1, characterized in that, The front surface of the lifting plate (5) is provided with anti-slip textured grooves.

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