A measuring scale for side contact mounting
By using a special measuring ruler with a side-contact installation method, and combining a square tube frame with various scales, precise measurement of the contact rail can be achieved. This solves the problems of low versatility and insufficient installation accuracy of existing tools, and improves installation quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING JINCHENG RAIL TRANSPORT EQUIP
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-12
AI Technical Summary
Existing measuring tools have low versatility, can only measure specific types of rail surfaces, have low installation accuracy, and lack precise pre-installation guidance, resulting in large installation errors and increased workload.
The specialized measuring ruler, which adopts a side-contact installation method, includes a square tube frame, a mounting bracket, a first movable scale, a second movable scale, and a universal angle gauge. Through the sliding connection of each component and the stable connection of the permanent magnet, it can accurately measure the contact rail and adapt to the measurement needs of different heights and angles.
It improves measurement accuracy and adaptability, reduces installation errors, saves workload, ensures contact rail installation quality, and is suitable for C-type and I-type contact rails, adapting to small curves and steep gradient lines.
Smart Images

Figure CN224353740U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of measuring tools, and in particular to a measuring ruler with a side-contact mounting method. Background Technology
[0002] In recent years, with the continuous acceleration of urban development, the environmental pollution and traffic congestion caused by automobile-dominated transportation modes have become increasingly serious. As a result, monorail and medium-to-low speed maglev rail transit, which have low pollution, low noise, and do not affect road traffic when using elevated bridges, are becoming increasingly popular in cities.
[0003] As a crucial component of the traction power supply system in urban rail transit, the contact rail can be categorized into three types based on its installation method: top contact, bottom contact, and side contact. The side contact installation method demands the highest installation precision. Only a precisely installed rail surface can ensure smooth current transmission, reduce rail shoe wear, lower noise, and meet the requirements for smooth vehicle operation. Current technologies for measuring contact rails have limitations. When measuring side contact rails, the commonly used measuring tools are relatively limited. Some tools are primarily designed for specific types of rail surfaces; for example, some tools can only measure C-type rails. Furthermore, in the past, measurements were typically taken only after the contact rail installation was complete. During installation, the lack of pre-positioned rail supports resulted in a lack of precise pre-installation guidance. Additionally, existing measuring tools have limited measurement ranges, both horizontally and angularly.
[0004] Currently, existing measuring tools have low versatility, only capable of measuring the surface of C-type rails. They cannot measure the insulating supports and surface of I-type contact rails. In addition, the installation accuracy is low, and in the past, measurements could only be taken after the contact rail was installed. The rail support was not pre-positioned, resulting in large errors and adjustments during rail installation, which increased the workload of workers. Utility Model Content
[0005] To further improve the installation accuracy of the rail surface, this application provides a special measuring ruler for side contact installation.
[0006] This application provides a special measuring ruler with a side-contact mounting method. The technical solution adopted is as follows:
[0007] A side-contact mounting method for contact rails includes a square tube frame, a mounting bracket, a first movable scale, a second movable scale, and a universal angle gauge. The upper end of the square tube frame is mounted on the rail, and the lower end of the square tube frame is mounted on a first measuring block. The first movable scale is slidably connected to the first measuring block in the horizontal direction. A second measuring block is mounted on one end of the first movable scale. The universal angle gauge is slidably connected to the second measuring block. One end of the second movable scale is fixedly connected to the universal angle gauge. A third measuring block is slidably connected to the second movable scale in the vertical direction. The mounting bracket is mounted on the side wall of the rail support beam, and the third measuring block can abut against the upper edge of the contact rail mounting platform on the mounting bracket.
[0008] By adopting the above technical solution, the square tube, mounting bracket, first movable scale, second movable scale, and universal angle gauge can be used to measure the contact rail of the measuring contact installation method. The sliding connection between each component enables flexible movement, and precise measurement of the contact rail of the measuring contact installation method can be carried out in the horizontal, vertical and angular directions, thereby further improving the measurement accuracy.
[0009] In one specific implementation scheme, the square tube frame includes a first square tube, a second square tube, and a third square tube. The first square tube is placed horizontally and connected to the lower end of the track. The second square tube is fixedly connected to the first square tube and is set perpendicular to the first square tube. The second square tube abuts against the tip of the F-rail to form a vertical reference perpendicular to the track surface. The third square tube is installed on the end of the second square tube away from the first square tube and is set parallel to the first square tube. The first measuring block is installed on the third square tube.
[0010] By adopting the above technical solution, the square tube frame is made into a specific structure that is easy to install on the track and the position of the first measuring block is reasonably arranged, which is conducive to the subsequent use of the first measuring block in conjunction with other components to realize the measurement of the contact rail in the opposite side contact installation method.
[0011] In one specific implementation, a permanent magnet is also included, which is mounted on the first square tube. The first square tube is connected to the track via the permanent magnet to form a horizontal reference parallel to the track surface.
[0012] By adopting the above technical solution, a permanent magnet is installed on the first square tube, and the first square tube is connected to the track through the permanent magnet. This enhances the stability of the connection between the square tube frame and the track, ensuring the smooth progress of the measurement process.
[0013] In one specific implementation, the second square tube includes a sleeve and a rod. The upper end of the sleeve is connected to the first square tube. A sliding groove is provided inside the sleeve and extends through the lower side wall of the sleeve. The rod is slidably connected in the sliding groove, and one end of the rod extends out of the sliding groove. The first measuring block is installed on the end of the rod away from the sleeve. A lifting assembly for controlling the up and down movement of the rod is installed on the sleeve.
[0014] By adopting the above technical solution, the second square tube includes a sleeve and a rod, and the sleeve has a lifting component that controls the up and down movement of the rod, which realizes the adjustment of the height of the first measuring block, so that the special measuring ruler can adapt to the measurement needs of different heights, improving the flexibility and adaptability of measurement. At the same time, when the first square tube and the second square tube are not set perpendicular to each other due to installation errors, they can be adjusted by the lifting component, which facilitates further improvement of measurement accuracy.
[0015] In one specific implementation, the lifting assembly includes a drive handwheel and a lifting screw. The lifting screw is rotatably connected inside the sleeve along the length of the sleeve and extends into the slide groove. The upper end of the lifting screw passes through the upper side wall of the sleeve. The lifting screw is drivenly connected to the rod body. The drive handwheel is installed at the upper end of the lifting screw.
[0016] By adopting the above technical solution, the lifting screw is rotated by driving the handwheel, so that the rod moves up and down along the slide groove of the sleeve, realizing the flexible adjustment of the height of the first measuring block and meeting the needs of different measurement scenarios.
[0017] In one specific implementation, a stainless steel pad is installed on the third-party pipe, and the first detection block is installed on the stainless steel pad to connect with the third-party pipe.
[0018] By adopting the above technical solution, a stainless steel pad is installed at the lower end of the third-party tube, and the first measuring block is installed on the stainless steel pad and connected to the rod. The good corrosion resistance of stainless steel can be used to ensure the long-term stable use of the structure, and avoid the rod and the first measuring block from being affected by corrosion, thus affecting the accuracy and service life of the measuring ruler. This ensures that the special measuring ruler can more reliably measure the side contact rail.
[0019] In one specific implementation scheme, the first movable ruler, the second movable ruler, the first measuring block, the second measuring block, and the third measuring block are all provided with scale lines.
[0020] By adopting the above technical solution, scale lines are set on the first moving scale, the second moving scale, the first measuring block, the second measuring block, and the third measuring block, which facilitates accurate reading of measurement data and improves the accuracy of contact rail measurement in the opposite contact installation method.
[0021] In one specific implementation, a strip-shaped stop is installed on the third measuring block.
[0022] By adopting the above technical solution, when using a side-contact mounting method for a dedicated measuring ruler for contact rails, the strip block is used to confirm the relative position of the center of the insulating support in the vertical direction.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. This utility model can perform separate vehicle inspections on the insulating support and the installed contact rail. When applying it, the insulating support can be measured and roughly positioned first, and the position of the contact rail can be precisely positioned after the contact rail is installed. This reduces the installation error of the contact rail, greatly reduces the amount of installation adjustment, improves accuracy, and saves workload.
[0025] 2. It can accurately measure the relevant parameters of the contact rail, ensure the installation quality of the contact rail, and provide a guarantee for the power supply stability of locomotives and rolling stock;
[0026] 3. This utility model has a large measuring range and a wide range of applications. It can be used as an installation tool for C-type and I-type contact rails and is suitable for the installation needs of contact rails on small curves and steep slopes.
[0027] 4. The sliding connection of each component allows for flexible adjustment of the measurement position and angle, facilitating the acquisition of more accurate measurement data. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure when an embodiment of this application is in operation.
[0029] Figure 2 This is a structural schematic diagram of an embodiment of this application.
[0030] Figure 3 This is a front view of an embodiment of this application.
[0031] Figure 4 This is a sectional view of a square tube frame.
[0032] Explanation of reference numerals in the attached drawings: 1. Square tube frame; 11. First square tube; 12. Second square tube; 121. Tube sleeve; 122. Rod body; 13. Third third tube; 2. Mounting bracket; 3. First movable ruler; 4. Second movable ruler; 5. Universal angle gauge; 6. First measuring block; 7. Second measuring block; 8. Third measuring block; 9. Permanent magnet; 10. Lifting assembly; 101. Drive handwheel; 102. Lifting screw; 11a. Stainless steel pad. Detailed Implementation
[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0034] This application discloses a special measuring ruler with a side-contact installation method.
[0035] like Figure 1 As shown, the special measuring ruler for side contact installation includes a square tube frame 1, a mounting bracket 2, a first movable ruler 3, a second movable ruler 4, and a universal angle gauge 5. The upper end of the square tube frame 1 is mounted on the track, and the lower end is mounted on a first measuring block 6. The first movable ruler 3 is slidably connected to the first measuring block 6 in the horizontal direction. A second measuring block 7 is mounted on one end of the first movable ruler 3 near the track support beam supporting the track. An arc-shaped groove is provided on the second measuring block 7 corresponding to the universal angle gauge 5. The universal angle gauge 5 is slidably connected in the arc-shaped groove and is set in a quarter-circle shape. The lower end of the second movable ruler 4 is fixedly connected to one end of the universal angle gauge 5. A third measuring block 8 is slidably connected to the second movable ruler 4 in the vertical direction. The mounting bracket 2 is mounted on the side wall of the track support beam. The third measuring block 8 can abut against the mounting bracket 2, achieving the effect of accurate measurement and positioning of the insulating support.
[0036] like Figure 2 and 3 As shown, the first movable scale 3 is generally a long, thin strip, made of stainless steel, which has good wear resistance and corrosion resistance. Alternatively, it can be made of specially treated carbon steel. It is horizontally slidably connected to the first measuring block 6, which is typically a block structure with guide rails or slots for the first movable scale 3 to slide on. A second measuring block 7 is mounted at one end of the first movable scale 3, either by welding or screwing. The second measuring block 7 is also a block structure, providing a base for the universal angle gauge 5 to slide. The universal angle gauge 5 is slidably connected to the second measuring block 7, and can slide flexibly within the arc-shaped groove of the second measuring block 7, measuring a maximum deviation of 30°. One end of the second movable scale 4 is fixedly connected to the universal angle gauge 5. It is also long and thin, made of a similar material to the first movable scale 3. A third measuring block 8 is vertically slidably connected to the second movable scale 4, and this third measuring block 8 is a structure that can slide up and down on the second movable scale 4.
[0037] In practical use, the square tube frame 1 provides a stable support structure for the entire measuring ruler. The first square tube 11 is connected to the track, allowing the measuring ruler to be fixed on the track; the arrangement of the second square tube 12 and the third square tube 13 ensures a reasonable spatial layout of the frame.
[0038] It also includes a permanent magnet 9, which is installed at one end of the bottom surface of the first square tube 11 near the track. The permanent magnet 9 is generally block-shaped with a smooth surface and can be made of high-strength neodymium iron boron, exhibiting strong and stable magnetism. The first square tube 11 is connected to the track via the permanent magnet 9. This connection method is convenient and quick; simply bringing the permanent magnet 9 close to the track achieves a firm adhesion, and installation and disassembly are easy. When it is necessary to change the measurement position, the permanent magnet 9 can be directly separated from the track. Different numbers of permanent magnets 9 can be installed according to the length of the first square tube 11 to ensure the stability of the connection.
[0039] The second square tube 12 includes a sleeve 121 and a rod 122. The upper end of the sleeve 121 is connected to the first square tube 11, which can be done by welding or bolting. A groove is provided inside the sleeve 121, extending through the lower side wall of the sleeve 121. The rod 122 is slidably connected within the groove, with one end extending out of the groove. The first measuring block 6 is installed on the end of the rod 122 opposite to the sleeve 121. The sleeve 121 is typically a hollow tubular structure with a smooth inner wall to ensure smooth sliding of the rod 122. The rod 122 is generally a hollow columnar structure, made of a material matching the sleeve 121.
[0040] like Figure 3 As shown, a lifting assembly 10 for controlling the vertical movement of a control rod 122 is installed on the sleeve 121. The lifting assembly 10 includes a drive handwheel 101 and a lifting screw 102. The lifting screw 102 is installed inside the sleeve 121 along its length, with one end extending into a groove. The upper end of the lifting screw 102 penetrates the upper side wall of the sleeve 121, and the drive handwheel 101 is installed at this end. The drive handwheel 101 is typically circular for easy operation. By rotating the drive handwheel 101, the lifting screw 102 is rotated, which in turn causes the rod 122 to move vertically within the groove. This facilitates the adjustment of the relative positions of the first moving scale 3, the second moving scale 4, and the mounting bracket 2, thereby ensuring the accuracy of the measurement results.
[0041] A stainless steel pad 11a is installed at the lower end of the rod 122. The stainless steel pad 11a is generally a square or round block structure, made of stainless steel, which is corrosion-resistant. The first detection block is installed on the stainless steel pad 11a, thus connecting to the rod 122. The stainless steel pad 11a plays a role in buffering and stabilizing, preventing the first detection block from being directly rigidly connected to the rod 122, and reducing the impact of vibration on the measurement results.
[0042] The first movable scale 3, the second movable scale 4, the first measuring block 6, the second measuring block 7, and the third measuring block 8 are all equipped with scale lines. These scale lines are clear and accurate, and are generally produced through laser engraving or etching processes. The scale lines allow measurement personnel to directly read the measurement data, making the process convenient and quick.
[0043] A strip-shaped stop is installed on the third measuring block 8. The strip-shaped stop is generally long and narrow, and its material can be the same as that of the third measuring block 8. Its function is to provide a clear limit and reference during measurement, ensuring the accuracy of the measurement. For example, when the third measuring block 8 abuts against the mounting bracket 2, the strip-shaped stop can more accurately indicate the measurement position.
[0044] The implementation principle of a side-contact installation method for a dedicated measuring ruler for contact rails in this application embodiment is as follows: This measuring ruler is installed on the rail via a square tube frame 1, and convenient installation and disassembly are achieved using a permanent magnet 9. Through the cooperation of the first movable scale 3, the second movable scale 4, and the universal angle gauge 5, measurement data in multiple dimensions such as horizontal distance, vertical distance, and angle can be obtained. The adjustable length design of the second square tube 12 and the lifting assembly 10 allow the measuring ruler to adapt to changes in the vertical direction of the installation position. The scale lines on the scales and measuring blocks facilitate reading, and the bar-shaped stops improve measurement accuracy. Compared with existing technologies, it has higher versatility, installation accuracy, and a larger measurement range, effectively solving the problems existing in current measuring tools and improving the quality and efficiency of contact rail installation.
[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A special measuring ruler with a side-contact mounting method, characterized in that: The system includes a square tube frame (1), a mounting bracket (2), a first movable ruler (3), a second movable ruler (4), and a universal angle gauge (5). The upper end of the square tube frame (1) is mounted on the track, and the lower end of the square tube frame (1) is mounted with a first measuring block (6). The first movable ruler (3) is slidably connected to the first measuring block (6) in the horizontal direction. A second measuring block (7) is mounted on one end of the first movable ruler (3). The universal angle gauge (5) is slidably connected to the second measuring block (7). One end of the second movable ruler (4) is fixedly connected to the universal angle gauge (5). A third measuring block (8) is slidably connected to the second movable ruler (4) in the vertical direction. The mounting bracket (2) is mounted on the side wall of the track support beam, and the third measuring block (8) can abut against the mounting bracket (2).
2. The special measuring ruler with side contact mounting method according to claim 1, characterized in that: The square tube frame (1) includes a first square tube (11), a second square tube (12), and a third square tube (13). The first square tube (11) is placed horizontally and connected to the lower end of the track. The second square tube (12) is fixedly connected to the first square tube (11) and is set perpendicular to the first square tube (11). The second square tube (12) abuts against the tip of the F-rail to form a vertical reference perpendicular to the track surface. The third square tube (13) is installed on the end of the second square tube (12) away from the first square tube (11) and is set parallel to the first square tube (11). The first measuring block (6) is installed on the third square tube (13).
3. The special measuring ruler for side contact mounting method according to claim 2, characterized in that: It also includes a permanent magnet (9), which is mounted on the first square tube (11). The first square tube (11) is connected to the track through the permanent magnet (9) to form a horizontal reference parallel to the track surface.
4. The special measuring ruler with side contact installation method according to claim 2, characterized in that: The second square tube (12) includes a sleeve (121) and a rod (122). The upper end of the sleeve (121) is connected to the first square tube (11). A sliding groove is provided inside the sleeve (121) and the sliding groove passes through the lower side wall of the sleeve (121). The rod (122) is slidably connected in the sliding groove, and one end of the rod (122) extends out of the sliding groove. The first measuring block (6) is installed on the end of the rod (122) away from the sleeve (121). A lifting assembly (10) for controlling the up and down movement of the rod (122) is installed on the sleeve (121).
5. The special measuring ruler with side contact mounting method according to claim 4, characterized in that: The lifting assembly (10) includes a drive handwheel (101) and a lifting screw (102). The lifting screw (102) is rotatably connected to the sleeve (121) along the length of the sleeve (121) and extends into the slide groove. The upper end of the lifting screw (102) is provided through the upper side wall of the sleeve (121). The lifting screw (102) is drivenly connected to the rod body (122). The drive handwheel (101) is installed on the upper end of the lifting screw (102).
6. The special measuring ruler with side contact mounting method according to claim 4, characterized in that: A stainless steel pad (11a) is installed on the third-party tube (13), and the first measuring block (6) is installed on the stainless steel pad (11a) to connect with the third-party tube (13).
7. The special measuring ruler with side contact mounting method according to claim 1, characterized in that: The first movable scale (3), the second movable scale (4), the first measuring block (6), the second measuring block (7), and the third measuring block (8) are all equipped with scale lines.
8. The special measuring ruler with side contact mounting method according to claim 1, characterized in that: A strip-shaped stop is installed on the third measuring block (8).