Auxiliary tool for ground assembly of overhead line system cantilever

Abstract

The utility model discloses an auxiliary tool for ground assembly of an overhead line system cantilever. The auxiliary tool comprises a horizontal supporting assembly, a flat cantilever rod type insulator clamping groove, an installation height auxiliary measuring scale and a structure height auxiliary measuring scale. The horizontal supporting assembly is connected with a clamping groove through a triangular fixing plate, a long through groove is formed in the clamping groove and used for containing a flat cantilever rod type insulator, and a flat cantilever insulator earhole fixing clamping column is arranged at the other end of the clamping groove. The installation height auxiliary measuring scale vertically extends from the clamping groove and is provided with a plurality of insertion holes, and the inclined cantilever insulator fixing clamping columns can be selectively inserted into the insertion holes. The structure height auxiliary measuring scale is movably installed at the end of the horizontal supporting assembly through the locking sleeve and can be adjusted and locked. The tool integrates a three-dimensional measurement basis, can quickly position key components such as a flat cantilever, an inclined cantilever and a carrier cable base, realizes one-time assembly forming of the cantilever on the ground, remarkably reduces measurement steps, and improves assembly precision and efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to contact net assembly device technical field, concretely relates to a contact net wrist arm ground assembly auxiliary tool. BACKGROUND

[0002] The contact net is the important component part of electrified railway power supply system, is responsible for providing stable electric energy supply to train. The contact net wrist arm is as the support assembly of the load cable and wire, and its installation quality and precision have direct influence on the power supply safety and operation quality of train. Therefore, in the railway line construction, overhaul and later maintenance process, how to efficiently and accurately complete the assembly and installation of contact net wrist arm is very important.

[0003] In daily production operation, the assembly of contact net wrist arm is usually completed by 2-4 operating personnel on the ground. When assembling, according to the wrist arm design drawing and construction standard, the flat wrist arm, inclined wrist arm, positioning tube, various connecting pieces and insulator parts are combined in turn, and through continuous measurement and adjustment, it is ensured that the important parameters such as installation height, structure height, side limit, pull-out value meet the technical requirements. For example, according to the current relevant operation instruction document (such as WJGD-2016-P-JCW 《Ordinary speed railway contact net operation instruction book》), the wrist arm assembly needs to accurately ensure that the flat wrist arm, inclined wrist arm and positioning tube meet the requirements of the same vertical plane or the specified angle, and make each connecting part and insulator meet the requirements of bolt direction, fastening torque, drain hole direction and other aspects. However, in the traditional operation process, there is still lack of a set of special auxiliary tool, and most of the operation links can only rely on artificial visual judgment and conventional measuring tools (such as steel tape) to measure, compare and try to install multiple times.

[0004] Because there is no fixed reference datum in the ground assembly, and manual operation is easily affected by environment, personnel proficiency and other factors, the traditional operation method has the following shortcomings: first, measurement is frequent and error is large: when judging whether the horizontal and inclined arm is in the same vertical plane, and determining the angles of 90°, 70°-90°, 30°-60°, etc., the workers mainly rely on visual measurement and tape measurement, which not only consumes time, but also easily produces large deviation. Second, it is difficult to fix the insulator: during the assembly process, the two rod insulators need to be kept in the specified position and ensure the correct direction of the ear hole, but the existing operation mode often cannot effectively fix them, which leads to easy slipping or collision of the insulators, and further affects the assembly quality. Third, the installation height and positioning are not easy to control: without auxiliary tooling, the key dimensions such as installation height, structure height, side limit (position of the cable support base), and pull-out value need to be measured and repeatedly corrected during the assembly process; in order to obtain accurate values, multiple people often need to work together and take a long time. Fourth, the operation efficiency is low: when there is no auxiliary tool, the installation and position calibration of each component need to be repeatedly adjusted and measured, the process is complicated, and the overall operation efficiency is difficult to improve. At the same time, once there is an assembly deviation, it needs to be reworked and disassembled, which further increases the labor and time cost.

[0005] In recent years, with the continuous improvement of railway construction scale and train running speed, the skill training and technical competition of catenary workers are becoming more and more frequent, which puts forward higher requirements for the assembly precision and efficiency of the arm. At the same time, the number of new employees increases, and the grasping ability of different level operators to size and angle is uneven in actual assembly, which further highlights the importance of standardization and simplification of the operation process. However, at present, there is still a lack of a practical tool that can provide a quick, accurate and reusable positioning reference during the ground assembly stage, so as to reduce the measurement operation, improve the assembly quality and avoid common mistakes. SUMMARY

[0006] The utility model aims at providing a catenary arm ground assembly auxiliary tool to at least solve the problems of complicated measurement, inaccurate positioning and low installation efficiency in the prior art catenary arm ground assembly.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0008] A catenary arm ground assembly auxiliary tool, comprising a horizontal support assembly, a horizontal arm rod insulator clamping groove, an installation height auxiliary measuring scale and a structure height auxiliary measuring scale;

[0009] One end of the horizontal support assembly is connected to one end of the horizontal arm rod insulator clamping groove through a triangular fixing plate;

[0010] The flat-arm rod insulator clamping groove comprises a clamping groove body and a clamping block support, the clamping groove body is in a rectangular structure as a whole, a long through groove is arranged in the clamping groove body, and the long through groove is used to accommodate the flat-arm rod insulator; the clamping block support is integrally arranged at the other end of the clamping groove body, a flat-arm insulator ear hole fixing clamping column is vertically arranged on the clamping block support, and the flat-arm insulator ear hole fixing clamping column is used to position the flat-arm rod insulator.

[0011] The installation height auxiliary measuring scale is arranged in a vertical direction from the clamping block support and maintains a 90° angle with the horizontal support assembly, a plurality of plug-in holes are arranged at intervals on the installation height auxiliary measuring scale, and an inclined-arm insulator fixing clamping column is selectively arranged in the plurality of plug-in holes, and the inclined-arm insulator fixing clamping column is used to position the inclined-arm rod insulator.

[0012] The structure height auxiliary measuring scale is movably arranged at the end of the horizontal support assembly through a locking sleeve, the structure height auxiliary measuring scale is arranged in a vertical direction of the horizontal support assembly and maintains a 90° angle with the horizontal support assembly.

[0013] Further, the clamping sleeve is provided with a positioning bolt.

[0014] Further, the plug-in holes of the installation height auxiliary measuring scale are arranged at equal intervals along the axial direction of the scale body, 7 plug-in holes are arranged from 1600 mm to 1900 mm, and the center distance of any two adjacent plug-in holes is 50 mm.

[0015] Further, the inclined-arm insulator fixing clamping column is a detachable cylindrical structure, the outer diameter of the inclined-arm insulator fixing clamping column matches the hole diameter of the plug-in hole and the ear hole diameter of the inclined-arm rod insulator, and a anti-falling platform is arranged at the bottom of the column body.

[0016] Further, the locking sleeve is provided with a locking thread, and the structure height auxiliary measuring scale is positionally locked through the locking thread.

[0017] Further, a scale from 1100 mm to 1600 mm is arranged on the scale body of the structure height auxiliary measuring scale, and the scale is marked at intervals of 100 mm.

[0018] Further, the triangular fixing plate and the horizontal support assembly are detachably connected through bolts, and the triangular fixing plates are distributed in an equilateral triangle.

[0019] Further, a handle is fixedly arranged at the upper part of the installation height auxiliary measuring scale.

[0020] Further, the axial length of the locking sleeve is 40 mm-60 mm, and the fitting gap between the locking sleeve and the structure height auxiliary measuring scale is less than 0.2 mm.

[0021] Further, the horizontal support assembly, the flat arm rod type insulator clamping groove, the installation height auxiliary measuring scale, the structure height auxiliary measuring scale, the flat arm insulator ear hole fixing clamping column, the inclined arm insulator fixing clamping column and the handle are all made of aluminum alloy profiles, and the surfaces are subjected to anodic oxidation treatment.

[0022] Compared with the prior art, the utility model has the beneficial effects as follows:

[0023] Compared with the prior art, the auxiliary tool for catenary arm ground assembly provided by the utility model integrates the flat arm rod type insulator clamping groove, the installation height auxiliary measuring scale and the structure height auxiliary measuring scale on the horizontal support assembly, cooperates with the detachable flat arm, the inclined arm insulator fixing clamping column and the locking sleeve and other structures, integrates the installation datum, and accurately positions the angle and height in the ground assembly process; the measuring scales are all provided with scales or plug-in holes at millimeter level intervals, can directly complete the rapid checking of three key parameters of the side limit, the installation height and the structure height, significantly reduces the repeated manual measurement and adjustment; the overall tool adopts anodized aluminum alloy profiles, is light in weight, high in strength and corrosion resistant, and in combination with the detachable design of the bolts and the positioning pins, is convenient for carrying and rapid assembly, is also favorable for the on-site maintenance and part replacement; meanwhile, the rigid connection and the stiffening structure of the triangular fixing plate effectively ensure the assembly accuracy and stability, and the above can greatly improve the efficiency and quality of the arm ground assembly, reduce the human error, and reduce the risk of insulator bumping and rework. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings of embodiments can also be obtained according to these drawings without creating labor.

[0025] Figure 1 It is the straight line intermediate column positive positioning (straight chain type) arm assembly drawing suitable for the assembly auxiliary tool of the utility model;

[0026] In the drawing, the mark is:

[0027] 1-flat arm base, 2-flat arm rod type insulator, 3-flat arm, 4-sleeve double ear, 5-load bearing cable base, 6-pipe cap, 7-support pipe clamp, 8-positioning pipe support, 9-support pipe clamp, 10-pipe cap, 11-positioner, 12-positioning wire clamp, 13-positioning ring, 14-positioning pipe, 15-inclined arm, 16-inclined arm rod type insulator, 17-inclined arm base, 18-arm support.

[0028] Figure 2It is the whole structure schematic view of the embodiment of the utility model;

[0029] Figure 3 It is the whole structure schematic view of the embodiment of the utility model;

[0030] Figure 4 It is the assembly process schematic view of the embodiment of the utility model.

[0031] Marked as in the figure:

[0032] 19-horizontal support assembly, 20-triangle fixed plate, 21-flat wrist arm stick type insulator clamping groove, 22-handle, 23-long slot, 24-clamping block bearing platform, 25-flat wrist arm insulator ear hole fixed clamping column, 26-installation height auxiliary measuring scale, 27-insertion hole, 28-inclined wrist arm insulator fixed clamping column, 29-structure height auxiliary measuring scale, 30-locking sleeve. DETAILED DESCRIPTION

[0033] In order to facilitate understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0034] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0035] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, set, or can be detachably connected, set, or integrally connected, set. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] It should be pointed out that the size, proportional relationship and component position shown in the embodiment are only used to illustrate the principle of the utility model; without departing from the core idea, those skilled in the art can make equivalent replacement or improvement.

[0037] Embodiment:

[0038] The utility model discloses a contact net arm ground assembly auxiliary tool. Figures 1-4 The utility model discloses a contact net arm ground assembly auxiliary tool.

[0039] Referring to Figure 1 The structure is the typical assembly state of the straight middle column positive positioning (straight chain type) arm: the flat arm base 1 is fixed on the lateral of the support column, the flat arm 3 and the inclined arm 15 form a triangular support system through the arm support 18; the positioning tube 14, the positioner 11 and the positioning wire clamp 12 and other components limit the earth coordinates of the bearing and guiding system; the height of the load-bearing cable base 5 and the horizontal position of the positioning wire clamp 12 directly determine the side limit of the wire and the pull-out value. The structure puts forward the precision requirement of millimeter level and angle division for the verticality of the flat arm and the inclined arm rod insulator (2, 16), the ear hole orientation and the included angle between the two arms, and the assembly process must meet the three key parameters of installation height, structure height and side limit at one time, otherwise hidden troubles such as wire deviation or pull-out value out-of-tolerance will be caused when hoisted on the support column subsequently. Therefore, an auxiliary tool that can quickly establish a three-dimensional reference on the ground and can simultaneously limit the relative position of the flat arm and the inclined arm is needed to ensure the assembly efficiency and the size consistency.

[0040] As Figure 2 and Figure 3 Indicated, in the overall structure aspect, the contact net arm ground assembly auxiliary tool of the utility model embodiment is by horizontal support subassembly 19, triangle fixed plate 20, flat arm rod insulator slot 21, installation height auxiliary measuring scale 26 and structure height auxiliary measuring scale 29 are composed, and are equipped with handle 22 to facilitate carrying, and the each component is made of anodized aluminum alloy section material, reduces the dead weight significantly while guaranteeing the strength and rigidity, triangle fixed plate 20 adopts equilateral triangle cloth hole, through bolt and horizontal support subassembly 19 detachable connection, both ensure the assembly rigidity, and be convenient for on-site dismounting and maintenance.

[0041] The clamping groove 21 of the flat-arm rod insulator is integrally formed by a clamping groove body and a clamping block platform 24; a long through groove 23 is formed in the clamping groove body, the groove width is slightly larger than the outer diameter of the flat-arm rod insulator by 2 mm, and the groove depth is not less than 1.2 times of the outer diameter, so that the insulator is kept vertical after being inserted and is not loose; the clamping block platform 24 is located at the other end of the clamping groove body, a flat-arm insulator ear hole fixing clamping column 25 is vertically arranged on the clamping block platform 24, the outer diameter of the flat-arm insulator ear hole fixing clamping column 25 is precisely matched with the ear hole of the insulator, and the flat-arm vertical reference point can be directly limited; an installation height auxiliary measuring scale 26 extends downward from the clamping block platform 24 and is at an angle of 90° with the horizontal support assembly 19. In order to meet the requirements of different arm structure heights, seven plug-in holes 27 are arranged at equal intervals on the scale body axis from 1600 mm to 1900 mm, the center distance of each hole is 50 mm, and the inclined-arm insulator fixing clamping column 28 can be selected and plugged according to the needs of the site; the inclined-arm insulator fixing clamping column 28 is a detachable cylindrical part, a anti-falling platform is arranged at the bottom end, the top end is precisely matched with the ear hole of the inclined-arm rod insulator, and the assembly and disassembly are fast; a handle 22 is fixedly arranged at the upper end of the scale body, and the whole set of tools can be moved by one person.

[0042] The structure height auxiliary measuring scale 29 is slidably matched with the horizontal support assembly 19 through a locking sleeve 30; the axial length of the locking sleeve 30 is controlled to be 40 mm to 60 mm, the inner wall is processed with locking threads, and the scale body can be locked at the target elevation after being screwed; the gap between the two parts is less than 0.2 mm, so as to ensure the reading accuracy; the scale body is provided with 1100 mm to 1600 mm scales on the outside, and the line spacing is 100 mm, so as to facilitate the rapid comparison of the structure height of the cable seat or the positioning pipe support.

[0043] Referring to Figure 4 During assembly, the operator first inserts the flat-arm rod insulator vertically into the long through groove 23, so that the ear hole is embedded with the clamping column 25, thereby determining the flat-arm reference. Then, the appropriate plug-in hole 27 is selected on the installation height auxiliary measuring scale 26 according to the design requirements, the inclined-arm insulator fixing clamping column 28 is inserted and locked, and the inclined-arm rod insulator is inserted into the corresponding clamping column to complete the positioning. The structure height auxiliary measuring scale 29 is adjusted to the specified scale through the locking sleeve 30, thereby providing a vertical elevation reference for the cable seat and other parts. By using the X-Y orthogonal coordinate reference formed by the horizontal support assembly 19 and the installation height scale 26, the flat-arm, inclined-arm and positioning pipe can be simultaneously calibrated in the vertical plane, the angle and the pull-out value in one assembly process, thereby omitting the traditional repeated measurement and calibration process.

[0044] In order to verify the efficiency improvement effect of the utility model, the applicant selects three groups of different proficiency personnel (4 people in each group) to respectively adopt the traditional measuring tool method and the auxiliary tool to perform ground assembly comparison test, and the statistical results are shown in Table 1.

[0045] Conventional work method (S) Auxiliary tool work method (S) New staff 9′37″ 8′16″ Ordinary staff 7′56″ 6′43″ Business backbone personnel 6′08″ 4′49″

[0046] Table 1 assembly time consumption comparison

[0047] As shown in Table 1, regardless of the proficiency of personnel, the use of the utility model can shorten the overall assembly time by about 15%~25%, and because the flat, inclined arm and positioning device are positioned at one time, the assembly error is maintained within ±2mm, effectively avoiding rework and insulator bumping phenomenon. Combined with lightweight profiles and detachable design, the tool is easy to carry and maintain on site, suitable for daily repair, skill competition and new employee training and other scenarios.

[0048] The above uses specific examples to describe the utility model, which is only used to help understand the utility model and does not limit the utility model. For those skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, transformations or substitutions can be made.

Claims

1. An auxiliary tool for catenary arm ground assembly, characterized in that, The horizontal support assembly, the flat-arm rod type insulator clamping groove, the installation height auxiliary measuring scale and the structure height auxiliary measuring scale are included. One end of the horizontal support assembly is horizontally connected to one end of the flat-arm rod type insulator clamping groove through a triangular fixing plate. The flat-arm rod type insulator clamping groove includes a clamping groove body and a clamping block support platform. The installation height auxiliary measuring scale is vertically arranged on the clamping block support platform and forms a 90° angle with the horizontal support assembly. The structure height auxiliary measuring scale is movably arranged on the end of the horizontal support assembly through a locking sleeve.

2. The overhead contact line arm ground assembly aid according to claim 1, characterized in that The locking sleeve is provided with a positioning bolt.

3. The catenary arm ground assembly aid tool of claim 1, wherein, The insertion holes of the installation height auxiliary measuring scale are equidistantly arranged along the axial direction of the scale body.

4. The overhead contact line arm ground assembly aid according to claim 3, characterized in that The locking sleeve is provided with a locking thread.

5. The catenary arm ground assembly aid of claim 1, wherein, The scale body of the structure height auxiliary measuring scale is provided with a scale from 1100mm to 1600mm and is marked at intervals of 100mm.

6. The overhead contact line arm ground assembly aid according to claim 5, characterized in that The triangular fixing plate is detachably connected to the horizontal support assembly through bolts.

7. The catenary arm ground assembly aid of claim 1, wherein, The upper part of the installation height auxiliary measuring scale is fixedly provided with a handle.

8. The catenary arm ground assembly aid tool of claim 1, wherein, The axial length of the locking sleeve is 40mm-60mm, and the fitting gap between the locking sleeve and the structure height auxiliary measuring scale is less than 0.2mm.

9. The catenary arm ground assembly aid tool of claim 1, wherein, The horizontal support assembly, the flat-arm rod type insulator clamping groove, the installation height auxiliary measuring scale, the structure height auxiliary measuring scale, the flat-arm insulator ear hole fixing clamping column, the inclined-arm insulator fixing clamping column and the handle are all made of aluminum alloy profiles and are subjected to anodic oxidation treatment.

10. The catenary arm ground assembly aid of claim 1, wherein, ​

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