A catenary cantilever assembly tool

Abstract

The utility model relates to the technical field of wrist arm assembly, and disclose a contact net wrist arm assembly frock, include: support rail, support rail one end top has at least one positioning hole, and the one end of flat wrist arm is fixedly connected with the positioning hole through first bolt, and the other end top of support rail has a plurality of adjusting hole, and the one end of inclined wrist arm is fixedly connected with corresponding adjusting hole through second bolt, and install on the support rail and align assembly, for making flat wrist arm axis and support rail long side vertical, a plurality of support stool, support stool is used for supporting the one end of wrist arm away from support rail, the utility model discloses utilize support rail and support stool, and the assembly personnel can move at will to adjust the assembly position, and the multiple positioning holes and adjusting hole are set up on the support rail, can assemble the wrist arm of commonly used specification on market, improve the scope of application.

Description

Technical Field

[0001] This utility model relates to the field of catenary assembly technology, specifically a catenary assembly fixture for overhead contact lines. Background Technology

[0002] The overhead contact system is a high-voltage power transmission line erected in a zigzag pattern above the rails in electrified railways, supplying current to the pantograph. It is the main framework of railway electrification engineering, a special type of power transmission line that supplies power to electric locomotives. It consists of several parts: contact suspension, support devices, positioning devices, supports, and foundations. In actual installation, a cantilever structure is typically used to support and secure the contact line.

[0003] The cantilever structure typically consists of a flat cantilever and an angled cantilever. One end of each cantilever is connected to a contact wire support via a rod insulator, while the other ends are interconnected. Precision in the pre-assembly and assembly of the cantilever structure is crucial to the entire construction process. However, the standard assembly method often involves transporting each cantilever component separately to the installation site for assembly. This approach is prone to errors, especially for contact wire cantilevers requiring high installation precision, and necessitates multiple calibrations during installation, reducing work efficiency. While some existing cantilever pre-assembly platforms can simplify on-site installation, they are generally large, requiring personnel to climb onto the platform to assemble cantilever components, which is inconvenient. Furthermore, the installation positions are often fixed, making it difficult to adjust the position and size, thus limiting applicability. Utility Model Content

[0004] This utility model provides a catenary cantilever assembly fixture. By adapting the support rail and the support stool, the cantilever cantilever can be assembled on the ground or platform. Personnel can adjust the position at will, and the support stool can be flexibly adjusted and added or removed according to the assembly needs, thus solving the problems of inconvenient assembly and poor applicability mentioned in the background art.

[0005] This utility model provides the following technical solution: A catenary cantilever arm assembly fixture includes: a support rail, wherein at least one positioning hole is provided at the top of one end of the support rail, one end of a flat cantilever arm is fixedly connected to the positioning hole by a first bolt, and multiple adjustment holes are provided at the top of the other end of the support rail, one end of an inclined cantilever arm is fixedly connected to the corresponding adjustment hole by a second bolt, and an alignment component is installed on the support rail to make the axis of the flat cantilever arm perpendicular to the long side of the support rail; and multiple support stools, which are used to support the end of the cantilever arm away from the support rail.

[0006] As a preferred embodiment of this utility model, the alignment component includes at least one laser collimator. A fixing frame is installed at the bottom of one end of the support rail. The laser collimator is detachably connected to the fixing frame. The emitting end of the laser collimator faces the flat arm and is perpendicular to the long side of the support rail. The axis of the laser collimator is spatially perpendicular to the axis of the positioning hole. In the horizontal projection, the distance between the axis of the laser collimator and the axis of the positioning hole is greater than the radius of the flat arm.

[0007] As a preferred technical solution of this utility model, the fixing frame has an L-shaped structure. One end of the fixing frame is detachably connected to the support rail by a third bolt. The fixing frame has an oblong hole, and the laser collimator is detachably connected in the oblong hole. The oblong hole is used to adjust the position of the laser collimator up and down.

[0008] As a preferred embodiment of this utility model, the plurality of adjustment holes are equidistantly distributed along the long side of the support rail, and the axial distance between adjacent adjustment holes is 50 or 100 mm.

[0009] As a preferred technical solution of this utility model, the adjustment hole is provided in five parts, corresponding to six specifications of wrist arms of 1400mm, 1500mm, 1600mm, 1700mm, 1750mm and 1800mm respectively.

[0010] As a preferred technical solution of this utility model, both ends of the support rail are fixedly connected to support legs with a triangular structure. The triangle is an isosceles triangle, and the angle between the two sides is in the range of 120°-160°.

[0011] As a preferred embodiment of this utility model, the support rail is a C-shaped steel.

[0012] As a preferred embodiment of this utility model, a rubber pad is fixedly connected to the top of the support stool.

[0013] Compared with the prior art, this utility model provides a catenary cantilever arm assembly fixture, which has the following beneficial effects: 1. In this overhead contact line cantilever assembly fixture, by placing the support rails and support stools on the ground or platform, the assembly personnel can freely move and adjust the assembly position, completing the precise assembly of the cantilever on the ground, improving assembly efficiency and accuracy. This improves cantilever assembly efficiency and ensures safety during high-altitude cantilever erection. Multiple positioning and adjustment holes are provided on the support rails, enabling the assembly of cantilevers with different upper and lower cantilever spacing specifications on different lines, thus expanding its applicability.

[0014] 2. In this overhead contact line cantilever assembly fixture, by using a support stool in conjunction with a support rail, the support position of the cantilever can be adjusted via the support stool, thereby increasing its applicability. Moreover, after assembly, the support rail and support stool are easy to store, reducing space occupation and improving the usage effect.

[0015] 3. In this overhead contact line cantilever assembly fixture, the laser straightener under the flat cantilever base allows the cantilever to be confined within the laser-limited range during assembly, ensuring that the vertical or vertical offset distance between the flat cantilever and the support rail is controllable. This greatly reduces the error in ground cantilever assembly, and in particular improves the accuracy and efficiency of cantilever installation during emergency repairs of railway overhead contact line faults. The invention of this device is helpful for the operation and maintenance of railway overhead contact lines.

[0016] The parts not covered in this device are the same as or can be implemented using existing technologies. This utility model utilizes a support rail and a support stool, allowing assemblers to move freely to adjust the assembly position. Multiple positioning holes and adjustment holes are provided on the support rail, enabling the assembly of commonly used carpal arms on the market, thus expanding the scope of application. The installation of a laser calibrator can improve the accuracy and efficiency of carpal arm assembly. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a first planar schematic diagram of the present invention; Figure 3 This is a schematic diagram of the second plane of the present invention; Figure 4 This is a three-dimensional schematic diagram of the support rail of this utility model; Figure 5 This is a three-dimensional schematic diagram of the support stool of this utility model.

[0019] In the diagram: 1. Support rail; 101. Support leg; 102. Positioning hole; 103. Adjustment hole; 2. Support stool; 201. Rubber pad; 3. Fixing frame; 301. Waist-shaped hole; 4. Laser collimator. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Reference Figures 1-5A catenary cantilever arm assembly fixture includes: a support rail 1, which is preferably a C-shaped steel with its opening facing the side. The length of the support rail 1 is greater than 1.8m, preferably 2m. At least one positioning hole 102 is provided on the top of one end of the support rail 1, preferably two, which are equidistantly distributed along the long side of the support rail 1 with a spacing of 50mm. One end of the flat cantilever arm is fixedly connected to one of the positioning holes 102 by a first bolt. Multiple adjustment holes 103 are provided on the top of the other end of the support rail 1. One end of the inclined cantilever arm is fixedly connected to the corresponding adjustment hole 103 by a second bolt. The support rail 1 is similar to a catenary support post, except that the support rail 1 is placed horizontally. That is, after the assembly is completed on the support rail 1, the cantilever arm is removed from the support rail 1 and transported to the site, where it can be directly installed on the catenary support post. Furthermore, multiple adjustment holes 103 are equidistantly distributed along the long side of the support rail 1, and the centers of the multiple adjustment holes 103 and the two positioning holes 102 on the top end face of the support rail 1 are located on the same straight line, and the axial distance between adjacent adjustment holes 103 is 100mm. Here, five adjustment holes 103 are provided, corresponding to six specifications of cantilever arms: 1400mm, 1500mm, 1600mm, 1700mm, 1750mm, and 1800mm. The five specifications of cantilever arms of 1400mm, 1500mm, 1600mm, 1700mm, and 1800mm are based on the outer positioning hole 102, while 1750mm is based on the positioning hole 102 closest to the adjustment hole 103, that is, the inner positioning hole 102. The above specifications are the distance between the ends of the flat cantilever arm and the inclined cantilever arm that are not connected. In use, by providing multiple positioning holes 102 and adjustment holes 103 on the support rail 1, cantilever arms of commonly used specifications on the market can be assembled, thus improving the applicability. Furthermore, an alignment component is installed on the support rail 1 to ensure that the axis of the flat wrist arm is perpendicular to the long side of the support rail 1. During use, the angle between the flat wrist arm and the support rail 1 can be adjusted using the alignment component. In actual use, the axis of the flat wrist arm should be kept perpendicular to the support rail 1 (within the allowable error range) to ensure the dimensional accuracy of the assembled wrist arm and improve the performance. Multiple support stools 2 are provided to support the end of the wrist arm away from the support rail 1. There are two to ten support stools 2, preferably five. By using the support stools 2 to support the other end of the flat and inclined wrist arms, not only can the flat and inclined wrist arms be effectively supported, but they can also be flexibly moved and their positions adjusted, thus improving the performance.

[0022] When in use, by placing the support rail 1 and support stool 2 on the ground or platform, the assembler can move them freely to adjust the assembly position, reducing the discomfort of working at height and improving work safety. The support rail 1 has multiple positioning holes 102 and adjustment holes 103, which can be used to assemble commonly used cantilever arms on the market, thus increasing the applicability.

[0023] Reference Figure 1 and Figure 4 Here, the positive component includes at least one laser collimator 4, model MLXA-D12-640-10, preferably two, symmetrical about the axis of the outermost positioning hole 102. A fixing bracket 3 is installed at the bottom of one end of the support rail 1. The laser collimator 4 is detachably connected to the fixing bracket 3. The emitting end of the laser collimator 4 faces the flat arm and is perpendicular to the long side of the support rail 1. The axis of the laser collimator 4 is spatially perpendicular to the axis of the positioning hole 102, and the distance between the axis of the laser collimator 4 and the axis of the positioning hole 102 in the horizontal projection is greater than the radius of the flat arm, which is 10-30 mm greater than its radius, preferably 20 mm. In use, the light emitted by the laser collimator 4 is used as a reference to adjust the angle of the flat arm on the support rail 1 so that the flat arm is perpendicular to the support rail 1. After the flat arm and the inclined arm are fixed by the arm support, they can be removed from the support rail 1, which can ensure the dimensional accuracy after assembly and improve the use effect. Of course, in other embodiments, the alignment component can also be a right-angle ruler, with the two right-angled sides of the right-angle ruler abutting against the support rail 1 and the outer wall of the flat arm, so as to adjust the flat arm.

[0024] Reference Figure 4 The mounting bracket 3 has an L-shaped structure. One end of the mounting bracket 3 is detachably connected to the support rail 1 via a third bolt. The mounting bracket 3 has an oblong hole 301. The laser collimator 4 is detachably connected to the oblong hole 301. That is, the laser collimator 4 is passed through the oblong hole 301 and then a nut is threaded onto the laser collimator 4 to fix it in the oblong hole 301. When installing the laser collimator 4, an angle ruler and a right-angle ruler should be used to measure the angle between the light emitted by the laser collimator 4 and the side wall of the support rail 1 to keep it perpendicular. The oblong hole 301 is used to adjust the position of the laser collimator 4 up and down.

[0025] Reference Figure 1 and Figure 4 At the bottom of both ends of the support rail 1, there are fixed support legs 101 with a triangular structure. The triangle is an isosceles triangle with an angle between the two sides ranging from 120° to 160°, preferably 150°. By fixing the support legs 101 to the bottom of the support rail 1, the support rail 1 can not only be supported and raised, but also kept stable when the flat arm is in a cantilever state, reducing tilting or tipping and improving the use effect.

[0026] Reference Figure 5A rubber pad 201 is fixedly connected to the top of the support stool 2. The support stool 2 is made of folded and welded steel plates, with a simple structure and easy manufacturing. The rubber pad 201 fixedly connected to the top of the support stool 2 can prevent scratches on the wrist arm, ensure the surface quality of the wrist arm, and improve the performance. The height difference between the top support surface of the rubber pad 201 and the top support surface of the support rail 1 is such that when the two ends of the flat wrist arm are placed on the top support surface of the support rail 1 and the top support surface of the rubber pad 201 respectively, the axis of the flat wrist arm is horizontal (within the allowable error range).

[0027] Components not described in detail in this article are existing technologies.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fixture for assembling a catenary cantilever arm, characterized in that, include: Support rail (1). The support rail (1) has at least one positioning hole (102) at the top of one end, and one end of the flat arm is fixedly connected to the positioning hole (102) by a first bolt. The support rail (1) has multiple adjustment holes (103) at the top of the other end, and one end of the inclined arm is fixedly connected to the corresponding adjustment hole (103) by a second bolt. The support rail (1) is equipped with an alignment component to make the axis of the flat arm perpendicular to the long side of the support rail (1). Multiple support stools (2) are used to support the end of the wrist arm away from the support rail (1).

2. The overhead contact line cantilever assembly fixture according to claim 1, characterized in that, The alignment assembly includes at least one laser collimator (4). A mounting bracket (3) is installed at the bottom of one end of the support rail (1). The laser collimator (4) is detachably connected to the mounting bracket (3). The emitting end of the laser collimator (4) faces the flat arm and is perpendicular to the long side of the support rail (1). The axis of the laser collimator (4) is spatially perpendicular to the axis of the positioning hole (102). In the horizontal projection, the distance between the axis of the laser collimator (4) and the axis of the positioning hole (102) is greater than the radius of the flat arm.

3. The overhead contact line cantilever assembly fixture according to claim 2, characterized in that, The fixing frame (3) has an L-shaped structure. One end of the fixing frame (3) is detachably connected to the support rail (1) by a third bolt. The fixing frame (3) has an oblong hole (301). The laser collimator (4) is detachably connected in the oblong hole (301). The oblong hole (301) is used to adjust the position of the laser collimator (4) up and down.

4. The overhead contact line cantilever assembly fixture according to claim 1, characterized in that, The multiple adjustment holes (103) are equidistantly distributed along the long side of the support rail (1), and the axial distance between adjacent adjustment holes (103) is (100) mm.

5. The overhead contact line cantilever assembly fixture according to claim 4, characterized in that, The adjustment hole (103) has five holes, corresponding to six different sizes of cantilever arms: 1400mm, 1500mm, 1600mm, 1700mm, 1750mm and 1800mm.

6. The overhead contact line cantilever assembly fixture according to claim 1, characterized in that, Both ends of the support rail (1) are fixedly connected to support legs (101) with a triangular structure. The triangle is an isosceles triangle with an angle between the two sides ranging from 120° to 160°.

7. The overhead contact line cantilever assembly fixture according to claim 1, characterized in that, The support rail (1) is a C-shaped steel.

8. The overhead contact line cantilever assembly fixture according to claim 1, characterized in that, The top of the support stool (2) is fixedly connected to a rubber pad (201).

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