Gauge measuring system

Abstract

A track gauge measuring system comprises two wireless digital display displacement meters, a sliding block, a sliding base, a prism set and an elastic piece, the two wireless digital display displacement meters are symmetrically arranged and installed on the lower sides, close to the left end and the right end, of a track measuring vehicle through connecting bases respectively, one wireless digital display displacement meter is connected with the sliding block, the sliding block is connected to the inner side of the sliding base in a sliding mode, and the prism set is connected with the elastic piece. The sliding base is connected to the lower side of the track measuring vehicle, the elastic piece is connected between one wireless digital display displacement meter and the sliding block, the lower side of the sliding block penetrates through the sliding base and then is connected with a first rolling piece, and the first rolling piece is connected to the standard gauge position on the inner side of a track in a rolling mode. The lower end of the prism set penetrates through the sliding base and then is connected to the upper side of the sliding block, the central axis of a prism rod is located over the contact portion of the first rolling piece and the inner side line of the rail, the movable measuring end of the other wireless digital display displacement meter is connected with a second rolling piece, and the second rolling piece is connected to the standard gauge position on the inner side of the rail in a rolling mode. According to the design, the measuring precision is high, and the service life is long.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit technical field especially relates to a track gauge measuring system. BACKGROUND

[0002] At present, track gauge ruler is generally used for track gauge measurement in the process of track construction acceptance and routine maintenance, and the track gauge ruler is usually measured by manual operation, which leads to low measurement efficiency and difficulty in finding track gauge mutation position. Meanwhile, there is also a way of using portal type sensing module to measure track gauge, which usually fixes displacement sensor on the top of portal and connects it with moving portal column to measure displacement value of the portal column and obtain track gauge value. However, the position of moving portal column tension point deviates from the normal position of the measuring point, so that the hinge node stress deformation will cause measurement error, and the track gauge value is easy to produce large or more peak value in the measurement process, which will also affect the fine adjustment effect. SUMMARY

[0003] The utility model aims at overcoming the defects and problems of low measurement efficiency and low precision in the prior art, and provides a track gauge measuring system with high measurement efficiency and high precision.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows: a track gauge measuring system, comprising two wireless digital display displacement meters, a sliding block, a sliding seat, a prism group and an elastic member, the two wireless digital display displacement meters are symmetrically arranged and installed on the lower side of the track measurement vehicle near the left and right ends through the connecting seat, the moving measurement end of one of the wireless digital display displacement meters is connected with the sliding block, the sliding block is slidingly connected to the inner side of the sliding seat, the sliding seat is connected to the lower side of the track measurement vehicle, the elastic member is connected between the sliding block and the other wireless digital display displacement meter, the lower side of the sliding block is connected with a first rolling member after passing through the sliding seat, the first rolling member is rollingly connected to the standard track gauge position on the inner side of the track, the lower end of the prism group is connected to the upper side of the sliding block after passing through the sliding seat, the central axis of the prism rod of the prism group is located directly above the contact position of the first rolling member and the inner side of the track, the moving measurement end of the other wireless digital display displacement meter is connected with a second rolling member, and the second rolling member is rollingly connected to the standard track gauge position on the inner side of the track.

[0005] The prism group comprises a prism and a prism rod, the lower end of the prism rod is connected with the upper side of the sliding block, the prism is connected to the upper end of the prism rod, the reflection center of the prism is located directly above the contact position of the first rolling member and the inner side of the track, and the prism is matched with an automatic total station.

[0006] The slide block is dovetail-shaped, and a groove is provided on the upper side of the slide block along the vertical track direction, with the prism rod located in the groove.

[0007] The slider is dovetail-shaped and is vertically arranged inside the track. The lower side of the slide block has a dovetail groove that matches the slider.

[0008] The first rolling element includes a rubber-coated rolling bearing and a connecting rod. The rubber-coated rolling bearing is arranged horizontally and its inner ring is fitted onto the lower end of the connecting rod. The outer ring of the rubber-coated rolling bearing is rolledly connected to the standard gauge section inside the track.

[0009] The second rolling element includes a roller fork, in which a rubber-coated roller is rotatably connected, and the rubber-coated roller is rotatably connected to the standard gauge section inside the track.

[0010] The connecting base includes two spaced-apart bases, which are connected to the underside of the track measuring vehicle. The wireless digital displacement gauge has mounting ends at both ends, and the two mounting ends are respectively mounted on the underside of the two bases.

[0011] The base is T-shaped, and a threaded hole is provided on the upper side of the base. A bolt is threaded into the threaded hole and is threaded to the lower side of the track measuring vehicle.

[0012] The base has a mounting groove on its lower side, the mounting end is located in the mounting groove, and a fastening screw is threaded between the two side walls of the mounting groove.

[0013] The elastic element includes a compression spring, which is sleeved on the outside of the moving measuring end of the wireless digital displacement meter. One end of the compression spring is connected to one side of the slider, and the other end of the compression spring is connected to the mounting end of the wireless digital displacement meter.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model discloses a track gauge measurement system that employs a wireless digital displacement meter design. This allows for real-time display and transmission of track gauge values ​​to a storage device for program recall. The digital displacement meter measures the track gauge's extension and retraction along the normal line of the rail to be measured, avoiding the drawbacks of existing wire sensors, such as tension slack loss and significant data fluctuations due to vibration. By connecting the track gauge measurement system to a track inspection vehicle, synchronous movement measurement can be achieved using the vehicle body, eliminating the need for manual operation. The first rolling element is connected to the rail, while the prism assembly is suspended above the slide block and does not contact the rail, thus preventing wear caused by direct contact between the prism assembly and the rail. The elastic element ensures continuous and close contact between the first rolling element and the rail, guaranteeing measurement accuracy. The sliding connection between the slider and slide block makes the rolling element and prism assembly more stable during linear movement measurement following the track inspection vehicle. Therefore, this utility model offers high measurement accuracy and a long service life.

[0016] 2. In this utility model's track gauge measurement system, accuracy is ensured by acquiring the three-dimensional coordinates of the standard track gauge location and then calculating the absolute track gauge value through coordinate inversion. The relative track gauge value is obtained through the extension and retraction of the wireless digital display displacement meter, ensuring measurement speed. The prism group uses a prism in conjunction with an automatic total station for tracking measurement, which can directly measure the continuous three-dimensional coordinates of the track. By rotating the track inspection vehicle 180 degrees, the continuous three-dimensional coordinates of another track can be directly measured, thus obtaining the spatial alignment changes of the entire track. The absolute track gauge value between the left and right tracks can then be obtained through coordinate inversion. This value can be directly compared with the design value to finely adjust the distance between the left and right tracks. At the same time, the system can accurately locate the track gauge non-compliance position based on the coordinate values ​​without on-site marking. The relative track gauge between the left and right tracks can be obtained by adding the elongation value of the wireless digital displacement gauge to the fixed installation length between them, and the value can be directly displayed on site, resulting in faster speed and higher efficiency. The slider and slide block connected to the digital displacement gauge both adopt a dovetail design, which has high structural stability to ensure measurement accuracy. The tight fit between the slot and the tenon allows the side digital displacement gauge and the top prism assembly to freely extend and retract along the normal direction of the inner side of the track, effectively preventing loosening and detachment. Installation is simple; just insert the tenon into the slot. Therefore, this invention is highly reliable, easy to use, and simple to install and disassemble.

[0017] 3. In this track gauge measurement system, the first rolling element uses a rubber-coated rolling bearing to contact the standard track gauge on the inner side of one track, while the second rolling element uses a rubber-coated roller to contact the standard track gauge on the inner side of the other track. Because the rubber materials inside the rolling bearing and the roller have good wear resistance and electrical insulation, they effectively prevent the measured track gauge value from increasing due to wear on the outer ring of the roller, thus ensuring measurement accuracy. Insulation between the left and right tracks is also guaranteed during track gauge contact measurement. A mounting slot is provided for installing a wireless digital displacement meter, ensuring its initial position remains unchanged each time it is installed. After installation, the horizontal position of the wireless digital displacement meter can be finely adjusted using tightening screws, facilitating track gauge value calibration before each use. The base is connected to the track inspection vehicle via a threaded connection, facilitating installation and disassembly. Therefore, this invention offers high stability, ease of use, and convenient installation and disassembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a partial structural schematic diagram of one of the wireless digital displacement gauges, tracks, and track measuring vehicles in this utility model.

[0020] Figure 3 This is a structural schematic diagram of the wireless digital displacement gauge, connecting seat, first rolling element, slider, slide block, and prism assembly in this utility model.

[0021] Figure 4 This is a schematic diagram of the slide block in this utility model.

[0022] Figure 5 This is a structural schematic diagram of the base in this utility model.

[0023] Figure 6 This is a partial structural schematic diagram of another wireless digital displacement gauge, track, and track measuring vehicle in this utility model.

[0024] In the diagram: 1. Track measuring vehicle; 2. Wireless digital displacement gauge; 3. Connecting seat; 4. Base; 41. Threaded hole; 42. Mounting groove; 43. Fastening screw; 43. Slider; 5. Slide seat; 6. Slide groove; 61. Dovetail groove; 62. Prism assembly; 7. Prism; 71. Prism rod; 72. Elastic element; 8. First rolling element; 9. Rubber-coated rolling bearing; 91. Connecting rod; 92. Second rolling element; 10. Roller fork; 101. Rubber-coated roller; 102. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1:

[0027] See Figures 1 to 6 A track gauge measurement system includes two wireless digital displacement gauges 3, a slider 5, a slide block 6, a prism assembly 7, and an elastic element 8. The two wireless digital displacement gauges 3 are symmetrically arranged and mounted on the lower side of a track measuring vehicle 2 near its left and right ends via connecting seats 4. The movable measuring end 31 of one of the wireless digital displacement gauges 3 is connected to the slider 5. The slider 5 is slidably connected to the inner side of the slide block 6. The slide block 4 is connected to the lower side of the track measuring vehicle 2. The elastic element 8 is connected to one of the wireless digital displacement gauges 3 and the slider 5. Between them, the lower side of the slider 5 passes through the slide block 6 and is connected to the first rolling element 9. The first rolling element 9 is rotatably connected to the standard gauge inside the track 1. The lower end of the prism group 7 passes through the slide block 6 and is connected to the upper side of the slider 5. The central axis of the prism rod 72 of the prism group 7 is located directly above the contact point between the first rolling element 9 and the inner line of the track 1. The other moving measuring end 31 of the wireless digital displacement meter 3 is connected to the second rolling element 10. The second rolling element 10 is rotatably connected to the standard gauge inside the track 1.

[0028] The prism assembly 7 includes a prism 71 and a prism rod 72. The lower end of the prism rod 72 is connected to the upper side of the slider 5. The prism 71 is connected to the upper end of the prism rod 72. The reflection center of the prism 71 is located directly above the contact area between the first rolling element 9 and the inner line of the track 1. The prism 71 is matched with the automatic total station.

[0029] In this embodiment, the standard track gauge refers to the area within 16mm below the rail head tread on the inner side of the track 1. The elastic element 8 is initially in a compressed state. Before measurement, two wireless digital displacement gauges 3 are first installed on the lower side of the track measuring vehicle 2 through the connecting seat 4. Then, the slider 5 slides in the slide seat 5 under the elastic force of the elastic element 8, driving the first rolling element 9 to move and contact the inner side of the right track 1, and the second rolling element 10 to contact the inner side of the left track 1. At this time, the prism group 7 is located directly above the contact point between the first rolling element 9 and the inner line of the track 1. Then, the track measuring vehicle 2 starts to move on the track 1. The three-dimensional coordinate values ​​of the prism 71 are obtained by the automatic total station, and the absolute track gauge value is obtained by coordinate inverse calculation. At the same time, the relative track gauge value between the left and right tracks 1 is calculated based on the elongation value of the wireless digital displacement gauges 3 plus the fixed installation length between them.

[0030] Example 2:

[0031] The basic content is the same as in Example 1, except that:

[0032] See Figure 3 and Figure 4The slide block 6 is dovetail shaped, and a groove 61 is provided on the upper side of the slide block 6 along the direction of the vertical track 1. The prism rod 72 is located in the groove 61.

[0033] The slider 5 is dovetail-shaped and is vertically arranged inside the track 1. The lower side of the slide block 6 is provided with a dovetail groove 62 that matches the slider 5.

[0034] In this embodiment, during installation, the slider 5 is aligned with one end of the dovetail groove 62 and inserted, and then the slider 5 is released. Under the action of the elastic element 8, the slider 5 slides laterally in the slide block 6. One end of the slide groove 61 is semi-circular, which matches the shape of the prism rod 72.

[0035] Example 3:

[0036] The basic content is the same as in Example 1, except that:

[0037] See Figure 3 and Figure 6 The first rolling element 9 includes a rubber-coated rolling bearing 91 and a connecting rod 92. The rubber-coated rolling bearing 91 is arranged horizontally and its inner ring is fitted onto the lower end of the connecting rod 92. The outer ring of the rubber-coated rolling bearing 91 is rolledly connected to the standard gauge position inside the track 1.

[0038] The second rolling element 10 includes a roller fork 101, and a rubber-coated roller 102 is rotatably connected inside the roller fork 101. The rubber-coated roller 102 is rotatably connected to the standard gauge section inside the track 1.

[0039] In this embodiment, the rubber material inside the rubber-coated rolling bearing 91 and the rubber-coated roller 102 has good cushioning performance, which can effectively reduce the vibration value when the roller rolls along the inner edge of the track 1, reduce the noise during operation and the runout value when the wireless displacement meter is measured, and improve the stability of the equipment.

[0040] Example 4:

[0041] The basic content is the same as in Example 1, except that:

[0042] See Figure 3 and Figure 5 The connecting seat 4 includes two spaced-apart bases 41, which are connected to the lower side of the track measuring vehicle 2. The wireless digital displacement gauge 3 has mounting ends 32 at both ends, which are respectively mounted on the lower side of the two bases 41.

[0043] The base 41 is T-shaped, and a threaded hole 42 is provided on the upper side of the base 41. A bolt is threaded into the threaded hole 42, and the bolt is threaded to the lower side of the track measuring vehicle 2.

[0044] The base 41 has a mounting groove 43 on its lower side, the mounting end 32 is located in the mounting groove 43, and a fastening screw 44 is threaded between the two side walls of the mounting groove 43.

[0045] The elastic element 8 includes a compression spring, which is sleeved on the outside of the moving measuring end 31 of the wireless digital displacement meter 3. One end of the compression spring is connected to one side of the slider 5, and the other end of the compression spring is connected to the mounting end 32 of the wireless digital displacement meter 3.

[0046] In this embodiment, during installation, the mounting end 32 of the wireless digital displacement meter 3 is first placed into the mounting slot 43, and then the fastening screw 44 is tightened. At the same time, the moving measuring end 31 of the wireless digital displacement meter 3 is passed through the compression spring and connected to the slider 5.

Claims

1. A track gauge measurement system, characterized in that: The system includes two wireless digital displacement gauges (3), a slider (5), a slide block (6), a prism assembly (7), and an elastic element (8). The two wireless digital displacement gauges (3) are symmetrically arranged and mounted on the lower side of the track measuring vehicle (2) near the left and right ends via connecting seats (4). The sliding measuring end (31) of one of the wireless digital displacement gauges (3) is connected to the slider (5). The slider (5) is slidably connected to the inner side of the slide block (6), which is connected to the lower side of the track measuring vehicle (2). The elastic element (8) is connected between one of the wireless digital displacement gauges (3) and the slider (5). The lower side of the slider (5) passes through the slide block (6) and is connected to the first rolling element (9). The first rolling element (9) is tactilely connected to the standard gauge inside the track (1). The lower end of the prism group (7) passes through the slide block (6) and is connected to the upper side of the slider (5). The central axis of the prism rod (72) of the prism group (7) is located directly above the contact point between the first rolling element (9) and the inner line of the track (1). The moving measuring end (31) of the other wireless digital displacement meter (3) is connected to the second rolling element (10). The second rolling element (10) is tactilely connected to the standard gauge inside the track (1).

2. The track gauge measurement system according to claim 1, characterized in that: The prism assembly (7) includes a prism (71) and a prism rod (72). The lower end of the prism rod (72) is connected to the upper side of the slider (5). The prism (71) is connected to the upper end of the prism rod (72). The reflection center of the prism (71) is located directly above the contact point between the first rolling element (9) and the inner line of the track (1). The prism (71) is matched with the automatic total station.

3. The track gauge measurement system according to claim 2, characterized in that: The slide block (6) is dovetail shaped, and a groove (61) is provided on the upper side of the slide block (6) along the direction of the vertical track (1). The prism rod (72) is located in the groove (61).

4. The track gauge measurement system according to claim 3, characterized in that: The slider (5) is dovetail-shaped and is vertically arranged inside the track (1). The lower side of the slide block (6) is provided with a dovetail groove (62) that matches the slider (5).

5. The track gauge measurement system according to claim 1, characterized in that: The first rolling element (9) includes a rubber-coated rolling bearing (91) and a connecting rod (92). The rubber-coated rolling bearing (91) is arranged horizontally and its inner ring is fitted onto the lower end of the connecting rod (92). The outer ring of the rubber-coated rolling bearing (91) is rolledly connected to the standard gauge of the inner side of the track (1).

6. The track gauge measurement system according to claim 1, characterized in that: The second rolling element (10) includes a roller fork (101), in which a rubber-coated roller (102) is rotatably connected, and the rubber-coated roller (102) is rotatably connected to the standard gauge of the inner side of the track (1).

7. The track gauge measurement system according to claim 1, characterized in that: The connecting seat (4) includes two spaced-apart bases (41), which are connected to the lower side of the track measuring vehicle (2). The wireless digital displacement gauge (3) has mounting ends (32) at both ends, and the two mounting ends (32) are respectively mounted on the lower side of the two bases (41).

8. The track gauge measurement system according to claim 7, characterized in that: The base (41) is T-shaped, and a threaded hole (42) is provided on the upper side of the base (41). A bolt is threaded into the threaded hole (42), and the bolt is threaded to the lower side of the track measuring vehicle (2).

9. A track gauge measurement system according to claim 8, characterized in that: The base (41) has a mounting groove (43) on its lower side, and the mounting end (32) is located in the mounting groove (43). A fastening screw (44) is threaded between the two side walls of the mounting groove (43).

10. A track gauge measurement system according to claim 7, characterized in that: The elastic element (8) includes a compression spring, which is sleeved on the outside of the moving measuring end (31) of the wireless digital displacement meter (3). One end of the compression spring is connected to one side of the slider (5), and the other end of the compression spring is connected to the mounting end (32) of the wireless digital displacement meter (3).

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