Labor-saving line pipe arc bending tool

Abstract

The invention relates to the technical field of electric wire arc bending, and particularly discloses a labor-saving wire pipe arc bending tool which comprises an arc bending part and a power part, and the power part is arranged on the rear side of the arc bending part; a plurality of limiting pins are detachably arranged on a top plate of the bent arc part; a sliding long hole is formed in the bent arc part in the front-back direction. A plurality of sliding rods are movably arranged in the sliding long holes, and the lower portions of the sliding rods penetrate out of the bent arc parts. A gap limiting block is detachably arranged at the lower part of the sliding rod; a top head is arranged at the top of the sliding rod; the gap limiting block is used for limiting the distance between the adjacent top heads; the limiting pins are arranged on the left side and the right side of the ejector head. The power part is provided with a telescopic rod, and the telescopic rod is used for pushing the sliding rod to move. According to the invention, the standard and working efficiency of cable arc bending operation can be obviously improved, and the safety of cable starting after wiring is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric wire bending, and in particular to a labor-saving wire tube bending tool. Background Art

[0002] In the field of cable and line construction, it is necessary to bend the wire or cable to a specific curvature, such as to enable the wire core to pass through the appropriate proposed installation configuration smoothly. At present, in actual operation, the most commonly used bending method is manual bending. For the existing technology of manual bending, its main structure relies solely on the hands of the construction personnel. From the perspective of the use effect, manual bending has obvious defects. First, manual bending requires construction personnel to exert great effort. This is because during the bending process, the construction personnel need to overcome the rigidity of the wire or cable core itself and the possible internal stress, and it is difficult to easily complete the bending operation by relying solely on hand strength. Secondly, when bending with manual bare hands, the curvature of the bend is difficult to accurately control and may not reach the appropriate angle. This is because there is an error in the human eye when judging the curvature, and the hand strength is difficult to maintain uniformity and stability during the operation, resulting in a large randomness in the bending result. This inaccurate bending curvature will bring many inconveniences to subsequent installation and use. For example, if the bending curvature is too large or too small, the wire tube may not be accurately matched with other installation configurations, affecting the stability and safety of the entire line system.

[0003] As for wiring needs, if multiple cables need to be bent concentrically according to the standard and there are clear requirements for the minimum spacing between cables during installation based on the thickness or voltage of different cables, in actual wiring, if an auxiliary bending device is used, how to achieve the standard concentricity of the bending areas of multiple cables and the controllable arc radius, and improve work efficiency are technical problems that need to be solved in actual construction. Summary of the invention

[0004] In order to solve the defects of the prior art, the present invention provides a labor-saving wire tube arc bending tool to solve the problems of convenient arc bending with good effect.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A labor-saving wire tube bending tool comprises a bending part and a power part, wherein the power part is arranged at the rear side of the bending part; the top plate of the bending part is detachably provided with a plurality of limit pins; the bending part is provided with long sliding holes along the front and rear directions; a plurality of sliding rods are movably provided in the long sliding holes, and the lower part of the sliding rods passes through the bending part; the lower part of the sliding rod is detachably provided with a gap limit block; the top of the sliding rod is provided with a head; the gap limit block is used to limit the distance between adjacent head; the limit pins are provided on the left and right sides of the head; the power part is provided with a telescopic rod, and the telescopic rod is used to push the sliding rod to move.

[0007] Optionally, the power unit is a telescopic cylinder or a screw drive assembly.

[0008] Optionally, the gap limiting block is disc-shaped, with a connecting hole provided at the center; the connecting hole is detachably connected to the lower part of the sliding rod.

[0009] Optionally, the gap limiting block is provided with a plurality of different diameter specifications for adjusting the spacing between adjacent plugs.

[0010] Optionally, an active cavity is provided between the top plate and the bottom plate of the curved portion along the front-to-back direction, and the long sliding hole passes through the active cavity; and the telescopic rod is provided on the rear side of the active cavity.

[0011] Optionally, a bushing is provided on the rear side of the movable cavity, and the telescopic rod passes through the bushing and can be slidably provided on the bushing.

[0012] Optionally, a plurality of insertion holes are provided on the top plate of the curved portion; and the limit pins are detachably connected to the insertion holes.

[0013] Optionally, a sliding groove is provided on the front and rear sides of the upper edge of the top plate of the curved portion, and the sliding groove is provided on the top of the sliding long hole; a limiting slider is provided in the sliding groove, and the limiting slider is connected to the sliding rod.

[0014] Optionally, the curved portion and the lower portion of the power portion are respectively provided with supports.

[0015] Optionally, a power control button is provided on the power unit.

[0016] The beneficial effects of the present invention are:

[0017] The present invention is provided with a sliding long hole and adopts a synchronous driving mode of multiple plugs, so that the concentric bending operation of multiple cables can be realized (that is, it can simulate the actual wiring and significantly improve the standardization of cable construction), and the spacing between the cables is controllable and adjustable, which effectively avoids the problem of failure to achieve standard concentricity of each cable in actual wiring due to inconsistent bending points of each cable when bending the cables one by one, thereby greatly improving the cable construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 is a cross-sectional view of the present invention;

[0020] Figure 2 is a partial top view of the present invention;

[0021] Figure 3 is a partial bottom view of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the limit pin of the present invention;

[0023] Figure 5 It is a top view of the arc bending operation of multiple cables of the present invention;

[0024] Figure 6 It is a top view of the wiring of multiple cables after being bent according to the present invention. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] like Figures 1 to 6 As shown, a labor-saving wire tube bending tool comprises a bending part 20 and a power part 1, wherein the power part 1 is arranged at the rear side of the bending part 20; a plurality of limit pins 5 are detachably arranged on the top plate of the bending part 20; a plurality of plug holes 21 are arranged on the top plate of the bending part 20; the limit pins 5 are detachably connected to the plug holes 21, and in this embodiment, the plug holes 21 are threaded holes. Figure 4 As shown, a threaded section 5 - 1 is provided at the lower portion of the limiting pin 5 . When in use, the limiting pin 5 is flexibly inserted into the insertion hole 21 , and then detachable fixation can be achieved through threaded connection.

[0027] The curved portion 20 is provided with a long sliding hole 7 along the front and rear directions; a plurality of sliding rods 3 are movably provided in the long sliding hole 7, and the lower part of the sliding rod 3 passes through the curved portion 20; a gap limit block is detachably provided at the lower part of the sliding rod 3; a top head 4 is provided at the top of the sliding rod; the gap limit block is used to limit the spacing between adjacent top heads 4; Figure 1 or Figure 3 As shown, the gap limit block is disc-shaped, and a connecting hole such as a threaded hole is provided at the center thereof; the gap limit block is provided with several different diameter specifications, including a first specification gap limit block 11, a second specification gap limit block 13, a third specification gap limit block 14, etc., the purpose is to adjust the spacing between adjacent said top heads by the size of different diameters. In this embodiment, a thread is provided at the lower part of the sliding rod 3, because the gap limit block cannot be completely tightened to ensure that the sliding rod 3 can move smoothly. Therefore, in some embodiments, a second nut can also be provided at the lower part of the gap limit block, that is, similar to the double nut principle, to improve the connection firmness. The limit pin 5 is provided on the left and right sides of the top head 4; the power unit 1 is provided with a telescopic rod 2, and the telescopic rod 2 is used to push the sliding rod 3 to move. The power unit is a telescopic cylinder 18 or a screw drive assembly. When in use, the operating principle is as follows: the telescopic cylinder 18 is started, causing the telescopic rod 2 to extend, and then pushing the sliding rod 3 on the rear side to move, while the other sliding rods 3 on the front side are pushed by the gap limit block.

[0028] In order to improve the stability of the operation of the sliding rod 3, in this embodiment, Figures 1-2 As shown, an active cavity 9 is provided between the top plate and the bottom plate of the curved portion 20 along the front-to-back direction, and the sliding long hole 7 passes through the active cavity 9; the telescopic rod 2 is provided at the rear side of the active cavity 9. A sliding groove 6 is provided along the front-to-back direction on the top plate of the curved portion, and the sliding groove 6 is provided at the top of the sliding long hole 7; a limit slider 14 is provided in the sliding groove 6, and the limit slider 14 is connected to the sliding rod 3. In this embodiment, as shown in FIG. Figure 1 As shown, rolling parts are arranged on both sides of the limit slider 14, and rolling friction is adopted to reduce friction. Figure 2 As shown, the limit slider 14 has a rectangular structure in a top view and is arranged in the sliding groove 6 along the left and right directions, playing an upper limit role on the front and rear displacement of the sliding rod 3, and the gap limit block plays a lower limit role on the sliding rod 3, thereby prompting the movable sliding rod 3 to form an I-shape on the cross-sectional surface, and then the telescopic rod 2 pushes from the middle to improve the stability of the overall movement of the sliding rod 3 and the top head 4.

[0029] Optionally, a bushing 16 is provided on the rear side of the movable cavity 9 , and the telescopic rod 2 passes through the bushing 16 and can be slidably disposed on the bushing 16 .

[0030] Optionally, the curved portion and the lower portion of the power portion are provided with a first support 8 and a second support 17 respectively.

[0031] Optionally, a power control button 19 is provided on the power unit 1 for controlling the extension and retraction of the telescopic cylinder 18 .

[0032] When using, Figure 5 As shown, the present invention can realize the simulated arc bending operation corresponding to the wiring of multiple cables 21 on site, such as Figure 6 As shown in FIG. 1 , the dashed line segment 22 is the bending point. The problem in the conventional operation is that each cable is bent separately. Although some tools can realize the standard bending operation, the bending points of the cables after bending cannot be aligned (such as the dashed line segment 22). This results in that the arcs of the cables to be routed after bending cannot be arranged in a standard concentric arrangement (because Figure 6 As shown, the straight line segments 21-1 of each cable are already fixed, and the spacing between the cables cannot be effectively adjusted. The present invention can realize the synchronous bending operation of multiple cables, thereby realizing the corresponding actual wiring scenarios (such as Figure 6 As shown, it is a top view of the cable after actual wiring. When it is necessary to determine the bending point and spacing of each cable, it is only necessary to adjust the relative position of the contact point between the corresponding cable and the limit pin 5, and the bending process can realize an intuitive simulation of the actual on-site wiring form, so that technicians in outdoor operations can make timely and effective adjustments to some operational errors, which significantly improves work efficiency. For cables with different installation spacing requirements, as mentioned above, this can be achieved by selecting gap limit blocks of appropriate specifications, which significantly improves the standardization of construction operations and improves the safety of cable activation after wiring.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A labor-saving wire tube bending tool, characterized in that: It includes an arc portion and a power portion, wherein the power portion is arranged at the rear side of the arc portion; the top plate of the arc portion is detachably provided with a plurality of limit pins; the arc portion is provided with long sliding holes along the front and rear directions; a plurality of sliding rods are movably provided in the long sliding holes, and the lower part of the sliding rods passes through the arc portion; the lower part of the sliding rod is detachably provided with a gap limit block; a top head is provided on the top of the sliding rod; the gap limit block is used to limit the distance between adjacent top heads; the limit pins are provided on the left and right sides of the top head; the power portion is provided with a telescopic rod, and the telescopic rod is used to push the sliding rod to move.

2. The labor-saving wire tube bending tool according to claim 1, characterized in that: The power unit is a telescopic cylinder or a screw drive assembly.

3. The labor-saving wire tube bending tool according to claim 1, characterized in that: The gap limiting block is in the shape of a disc, and a connecting hole is arranged at the center thereof; the connecting hole is detachably connected to the lower part of the sliding rod.

4. The labor-saving wire tube bending tool according to claim 1, characterized in that: The gap limiting blocks are provided with a plurality of different diameter specifications for adjusting the spacing between adjacent plugs.

5. The labor-saving wire tube bending tool according to claim 1, characterized in that: An active cavity is arranged between the top plate and the bottom plate of the curved portion along the front-rear direction, and the sliding long hole passes through the active cavity; and the telescopic rod is arranged at the rear side of the active cavity.

6. The labor-saving wire tube bending tool according to claim 5, characterized in that: A bushing is arranged at the rear side of the movable cavity, and the telescopic rod passes through the bushing and is slidably arranged on the bushing.

7. The labor-saving wire tube bending tool according to claim 1, characterized in that: A plurality of insertion holes are arranged on the top plate of the curved portion; and the limiting pins are detachably connected to the insertion holes.

8. The labor-saving wire tube bending tool according to claim 1, characterized in that: A sliding groove is arranged at the front and rear positions of the upper edge of the top plate of the curved portion, and the sliding groove is arranged at the top of the sliding long hole; a limiting slider is arranged in the sliding groove, and the limiting slider is connected to the sliding rod.

9. The labor-saving wire tube bending tool according to claim 1, characterized in that: The curved portion and the lower portion of the power portion are respectively provided with supports.

10. The labor-saving wire tube bending tool according to claim 1, characterized in that: The power unit is provided with a power control button.

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