A kind of power stay making steel strand bending device

Abstract

The utility model discloses a kind of electric power stay wire production steel strand bending device, including bottom plate, first connecting shaft is passed through on the bottom plate, first connecting shaft is equipped with first bending wheel, first connecting shaft is equipped with first support, second support is equipped on the first support, the first support is detachably connected with the second support, second connecting shaft is equipped on the second support, second connecting shaft is equipped with second bending wheel, handle is equipped on the second support, handle is equipped on the base. The utility model solves the problem that steel strand is difficult to conveniently take out after completing bending in the manual bending device used in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a bending device for steel strands used in power cable manufacturing. Background Technology

[0002] Steel strand is a steel product made of multiple strands of steel wire twisted together. It is mainly used in the power industry for applications such as catenary, guy wires, and grounding wires. Steel strands are usually bent manually and then wound around wedge clamps. If the steel strand is too thick, it is difficult to bend it manually. To address this, there are manual bending tools available on the market, similar to those used for steel pipes and reinforcing bars. Currently, power operators use these manual bending tools to assist in bending steel strands. However, in actual application, because the steel strand forms a fixed arc curve after bending, removing the steel strand from the bending tool requires bending it back to get it out. Since steel strands have a certain weight and strength, and the existing manual bending tools also have a certain weight, this work requires significant labor and time, resulting in low efficiency in the power line guying process. Utility Model Content

[0003] The purpose of this invention is to solve the problem that the steel strand is difficult to remove easily after bending using the manual bending tool used in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A bending device for steel strands used in power cable manufacturing includes a base plate, a first connecting shaft passing through the base plate, a first bending wheel sleeved on the first connecting shaft, a first bracket sleeved on the first connecting shaft, a second bracket on the first bracket, the second bracket being detachably connected to the first bracket, a second connecting shaft on the second bracket, a second bending wheel sleeved on the second connecting shaft, a handle on the second bracket, and a handle on the base plate.

[0005] Preferably, the second bracket has a U-shaped cross-section, a pair of inserts are provided on the second bracket, and a locking block is provided on the inserts. The first bracket has a pair of slots, and the slots engage with the inserts.

[0006] Preferably, a limiting sleeve is provided between the first bracket and the second bracket, and the limiting sleeve is fitted onto the second bracket.

[0007] Preferably, a bushing is provided between the second bending wheel and the second bracket, and the bushing is sleeved on the second connecting shaft.

[0008] Preferably, the handle is a crank.

[0009] Preferably, the base plate is provided with a limiting device, which consists of a pair of limiting blocks arranged on the base plate.

[0010] The beneficial effects proposed by this utility model are as follows: During use, the second bracket needs to be connected to the first bracket first. At this time, the first bending wheel and the second bending wheel abut against each other, forming a gap between them for the steel strand to pass through. Then, the construction worker passes the steel strand through the gap. When the steel strand has passed to the required length, the construction worker applies a pulling force to the handle, causing the second bracket to drive the first bracket to rotate. During this process, the first bracket rotates around the axis of the first connecting shaft, while the second bending wheel rotates synchronously with the first bracket under the drive of the second bracket. At this time, the first bending wheel is stationary relative to the second bending wheel. The second bending wheel uses the first bending wheel as a fulcrum, causing the steel strand to bend in the circumferential direction of the first bending wheel. The bending angle is determined by the rotation angle of the second bending wheel. Once the steel strand is bent to the desired angle, the first bracket is flipped in the opposite direction using the handle, causing the second bending wheel to return to its original position. The second bracket is then removed from the first bracket, separating the first and second bending wheels. This releases the steel strand from its restraints, allowing it to be easily removed from the first bending wheel. Finally, the first and second brackets are reconnected to complete the reset. This method allows workers to easily remove the steel strand from the bending machine after bending.

[0011] It should be noted that the bending sections of both the first bending wheel and the second bending wheel are V-shaped. This method helps to limit the movement of the circular cross-section steel strand, reducing the risk of the steel strand coming out of the gap during bending, thereby improving the bending effect. Attached Figure Description

[0012] Figure 1 This utility model proposes a three-dimensional bending device for steel strands used in the manufacture of power cables. Figure 1 ; Figure 2 This utility model proposes a three-dimensional bending device for steel strands used in the manufacture of power cables. Figure 2 ; Figure 3 A schematic diagram showing the connection between the first bending wheel and the second bending wheel of a steel strand bending device for power cable manufacturing proposed in this utility model; Figure 4 Exploded views of the first and second supports of a steel strand bending device for power cable manufacturing proposed in this utility model.

[0013] In the diagram: 1. Base plate; 2. First connecting shaft; 3. First bracket; 4. First bending wheel; 5. Second bracket; 6. Second connecting shaft; 7. Second bending wheel; 8. Handle; 9. Insert block; 10. Slot; 11. Locking block; 12. Limiting sleeve; 13. Bushing; 14. Limiting block; 15. Gap; 16. Handle. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figures 1 to 4A wire bending device for producing steel strands in power cable manufacturing includes a base plate 1, a first connecting shaft 2 passing through the base plate 1, a first bending wheel 4 sleeved on the first connecting shaft 2, a first bracket 3 sleeved on the first connecting shaft 2, a second bracket 5 mounted on the first bracket 3, the second bracket 5 being detachably connected to the first bracket 3, a second connecting shaft 6 mounted on the second bracket 5, a second bending wheel 7 sleeved on the second connecting shaft 6, a handle 8 mounted on the second bracket 5, and a handle 16 mounted on the base plate 1. Specifically, during use, the second bracket 5 needs to be installed and connected to the first bracket 3 firstly. At this time, the first bending wheel 4 and the second bending wheel 7 abut against each other, forming a gap 15 between them for the steel strand to pass through. The construction workers then pass the steel strand through the gap 15. Once the steel strand has been passed through to the required length, the construction workers first hold the handle 16 and apply a pulling force to the handle 8, causing the second bracket 5 to drive the first bracket 3 to rotate. During this process, the first bracket 3 rotates around the axis of the first connecting shaft 2, while the second bending wheel 7 rotates synchronously with the first bracket 3 under the drive of the second bracket 5. At this time, the first bending wheel 4 is stationary relative to the second bending wheel 7. The second bending wheel 7 uses the first bending wheel 4 as a fulcrum, causing the steel strand to bend in the circumferential direction of the first bending wheel 4. The bending angle is determined by the rotation angle of the second bending wheel 7. Once the steel strand is bent to the required angle, the first bracket 3 is flipped in the opposite direction using the handle 8, causing the second bending wheel 7 to return to its original position. Then, the second bracket 5 is removed from the first bracket 3, separating the first bending wheel 4 and the second bending wheel 7. At this point, the gap 15 releases the restriction on the steel strand, allowing it to be easily removed from the first bending wheel 4. Finally, the first bracket 3 and the second bracket 5 are reconnected to complete the reset. This method allows workers to easily remove the steel strand from the bending machine after bending.

[0016] It should be noted that the bending sections of the first bending wheel 4 and the second bending wheel 7 are both V-shaped. This method helps to limit the circular cross-section of the steel strand, reducing the risk of the steel strand coming out of the gap 15 during the bending process, thereby improving the bending effect.

[0017] Specifically, the second bracket 5 has a U-shaped cross-section and a pair of inserts 9 on it. Each insert 9 has a locking block 11. The first bracket 3 has a pair of slots 10, which engage with the inserts 9. During the installation and connection of the second bracket 5 and the first bracket 3, the second bracket 5 moves the inserts 9 towards the slots 10, allowing them to pass through. Then, under the action of the locking blocks 11, the inserts 9 are fixed to the slots 10, thus achieving a fixed connection between the second bracket 5 and the first bracket 3. During the disassembly of the second bracket 5 from the first bracket 3, because the second bracket 5 has a U-shaped cross-section, pressure is applied to both sides of the second bracket 5, causing it to deform. This shortens the distance between the U-shaped openings of the second bracket 5, allowing the locking blocks 11 to pass through the slots 10, thereby separating the inserts 9 from the slots 10 and completing the separation of the second bracket 5 from the first bracket 3.

[0018] Specifically, a limiting sleeve 12 is provided between the first bracket 3 and the second bracket 5, and the limiting sleeve 12 is fitted onto the second bracket 5. During the connection process between the second bracket 5 and the first bracket 3, in order to maintain the stability of the intermittent connection, the limiting sleeve 12 is provided on the second bracket 5. When the insert 9 engages with the slot 10, the first bending wheel 4 and the second bending wheel 7 abut against each other. However, in this process, the second bracket 5 is limited solely by the interaction force between the first bending wheel 4 and the second bending wheel 7, which places a significant burden on them and increases the risk of deformation over long-term use. Therefore, by installing the limiting sleeve 12 on the second bracket 5, the relative position between the first bending wheel 4 and the second bending wheel 7 can be limited after the insert 9 penetrates the slot 10, ensuring that the distance between them is at a reasonable level. This reduces the mutual pressure when they come into contact, which helps to reduce the risk of deformation and improve service life.

[0019] Specifically, a bushing 13 is provided between the second bending wheel 7 and the second bracket 5, and the bushing 13 is sleeved on the second connecting shaft 6. The bushing 13 is used to reduce the risk of axial displacement of the second bending wheel 7 during operation. During the use of the second bending wheel 7, pressure is applied to the steel strand, which generates reverse resistance and causes positional displacement of the steel strand on the second bending wheel 7, thus causing displacement of the second bending wheel 7 on the second connecting shaft 6. The bushing 13 can limit the position of the second bending wheel 7 and also allows the second bending wheel 7 to be disassembled relative to the second connecting shaft 6 for replacement.

[0020] Specifically, the handle 8 is a crank. The handle 8 is preferably a crank, which can save the labor of construction workers in driving the handle 8. At the same time, while achieving the same saving effect, the crank is smaller in size than a straight handle, making it easier to carry outdoors.

[0021] Specifically, the base plate 1 is provided with a limiting device, which consists of a pair of limiting blocks 14 symmetrically arranged on the base plate 1. The limiting device is used to limit the rotation range of the first support 3. Preferably, the rotation angle range of the first support 3 is 0-180 degrees. This range allows the maximum bending shape of the steel strand to be a U-shape, thereby adapting to the bending shape required for the steel strand in power line pulling operations.

[0022] Based on the above, this device has a simple structure, is small and lightweight, and is convenient for power construction workers to carry when working outdoors.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bending device for steel strands used in power cable manufacturing, comprising a base plate, characterized in that: A first connecting shaft runs through the base plate, a first bending wheel is fitted on the first connecting shaft, a first bracket is fitted on the first connecting shaft, a second bracket is fitted on the first bracket, the second bracket is detachably connected to the first bracket, a second connecting shaft is fitted on the second connecting shaft, a second bending wheel is fitted on the second connecting shaft, a handle is fitted on the second bracket, and a handle is fitted on the base plate.

2. The electric wire strand bending device according to claim 1, characterized in that: The second bracket has a U-shaped cross-section and a pair of inserts on it. Each insert has a locking block. The first bracket has a pair of slots that engage with the inserts.

3. The electric wire strand bending device according to claim 2, characterized in that: A limiting sleeve is also provided between the first bracket and the second bracket, and the limiting sleeve is fitted onto the second bracket.

4. The electric wire strand bending device according to claim 3, characterized in that: A bushing is provided between the second bending wheel and the second bracket, and the bushing is sleeved on the second connecting shaft.

5. The electric wire strand bending device according to claim 4, characterized in that: The handle is a crank.

6. The electric wire strand bending device according to claim 5, characterized in that: The base plate is provided with a limiting device, which consists of a pair of limiting blocks arranged on the base plate.

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