Turnout height detection device

Abstract

The utility model discloses a turnout height detection device, and belongs to the technical field of railway tracks. The device comprises two supports which are connected through a chord line, one end of the chord line is connected with a rotating shaft on one support and wound on the rotating shaft, and the other end of the chord line is connected with a force sensor on the other support. Therefore, after the two supports are fixed on the surface of a steel rail, the chord line can be tensioned by rotating the rotating shaft, the tension force of the chord line can be measured by the force sensor, the sagging amount of each position of the chord line can be calculated according to the measured tension force, and the height correction structure of each position of the chord line can be obtained by combining the height of each position of the chord line obtained by actual measurement. According to the utility model, the correction height of each position after a chord line droops during turnout height detection can be provided, and the turnout height detection accuracy is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway tracks, in particular to a device for detecting the height of a turnout, which is used for detecting the straightness of the center line position of the rail top surface within a length range of 10m of a straight steel rail after the turnout is assembled. Background Art

[0002] At present, TB / T412-2020 "Standard Gauge Railway Turnouts" and TB / T3307.1-2020 "Technical Conditions for Manufacturing High-Speed ​​Railway Turnouts Part 1: Manufacturing and Assembly" stipulate the turnout height acceptance standards (2mm / 10m) and measuring tools (chord and plate ruler), but there is no specific description of the inspection implementation method.

[0003] Turnout production, supervision and use units generally use string and plate ruler to detect the height of turnouts, such as Figure 1 As shown, the chord is erected on the rail top through supports A and B, with the support points at both ends of the chord 10 meters apart. The reference value of the distance between the chord and the rail top at the support point is 10 mm or 20 mm. Then use a steel ruler to measure the vertical distance from the rail top to the chord at each measuring point within a 10m range. The difference between the maximum and minimum values ​​measured cannot exceed 2mm to be judged as qualified.

[0004] Because the string is affected by gravity, each part naturally sags, and it is not actually an ideal straight line. The sag increases gradually from the support point to the midpoint, and the sag in the middle is the largest. Figure 2 Therefore, in theory, the measured data needs to be corrected, but in reality, some units make corrections while others do not; some units set the maximum correction value at 1mm while others set the maximum correction value at 2mm, which is not standardized, scientific, or accurate. Summary of the invention

[0005] The utility model provides a turnout height detection device, which can effectively improve the turnout height detection accuracy.

[0006] The utility model of a turnout height detection device comprises a first support, a second support and a string line; two ends of the string line are respectively connected to the first support and the second support; the utility model is characterized in that it also comprises a rotating shaft and a force sensor.

[0007] The rotating shaft is installed on the first support, and both ends are connected to the first support to form a rotating pair; a rocker is installed at one end of the rotating shaft. One end of the force sensor is fixed on the second support, and the data line of the force sensor is connected to the display through the wiring hole on the second support. One end of the string is wound around the rotating shaft, and the other end is connected to the force sensor.

[0008] By fixing two supports on the surface of the rail and rotating the shaft, the string can be tensioned. The tension of the string can be measured by a force sensor. The sag amount of each position of the string can be calculated based on the measured tension. Combined with the actual measured height of each position of the string, the height correction structure of each position of the string can be obtained.

[0009] The advantages of the utility model are:

[0010] (1) The turnout height detection device of the utility model can quickly and accurately adjust the tightness of the string and display it accurately and intuitively, so as to realize the correction of the string height measurement value.

[0011] (2) The utility model of the turnout height detection device enables different personnel to adjust the string tension to the same value, so that the measurement accuracy is consistent;

[0012] (3) Compared with the existing chord detection method, the turnout height detection device of the utility model has higher measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the existing turnout height measurement method;

[0014] Figure 2 It is a schematic diagram of the sag of the string line;

[0015] Figure 3 The utility model is a schematic diagram of the structure of a turnout height detection device.

[0016] In the figure:

[0017] 1- First support 2- Second support 3- String

[0018] 4-Force sensor 5-Display 6-Magnet

[0019] 7- shaft 8- ratchet 9- pawl

[0020] 10-Connection plate DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] The utility model of the turnout height detection device comprises a first support 1, a second support 2, a string 3, a force sensor 4 and a display screen 5. Figure 3 shown.

[0023] The first support 1 and the second support 2 have grooves at the bottom, and magnets 6 are installed in the grooves. After the magnets 6 are installed, the surface of the magnets 6 does not exceed the bottom surface of the support. The first support 1 and the second support 2 are adsorbed and fixed to the top of the rail by magnets, and remain motionless. The first support 1 and the second support 2 can also be designed as a structure with a U-shaped groove at the bottom, which is snapped onto the rail head through the C-shaped groove during installation and fixed to the rail head by bolts.

[0024] The first support 1 has two parallel side plates on the left and right sides, a rotating shaft 7 is arranged between the two side plates, the axis of the rotating shaft 7 is perpendicular to the left and right side plates, and both ends are respectively connected to the left and right side plates to form a rotating pair.

[0025] One end of the string 3 is fixed to the rotating shaft 7 and wound in a winding groove designed in the circumferential direction of the middle part of the rotating shaft 7. The other end of the string 3 is connected to one end of a force sensor 4 (DS2-S series external digital display push-pull force gauge); the other end of the force sensor 4 is installed on a longitudinal connecting plate 10 designed on the second support 2; the data line of the force sensor 4 is connected to the display screen 5 through a wiring hole opened on the side wall of the second support 2, and the display screen 5 displays the measurement value of the force sensor 4 in real time.

[0026] A rocker is installed at the end of the rotating shaft 7, which is used to rotate the rotating shaft 7 so as to wind the string and tighten the string 3. When the rotating shaft 7 is rotated to the right position, the rotating shaft 7 can be locked by selecting a rocker with a locking function, such as a rocker hinged between the rotating shaft 7. When the remote lever is coaxial with the rotating shaft 7, the remote lever is controlled by the handle at the end of the remote lever perpendicular to the remote lever to drive the rotating shaft 7 to rotate; when the rotating shaft is rotated to the right position, the rocker is rotated 90 degrees horizontally to make the handle at the end of the rocker cooperate with the outer wall of the support to achieve the rotation limit of the rocker. In order to improve the accuracy of the tension of the string 3 after the rocker is rotated to the right position, an ordinary rocker can also be used, and the rotation limit of the rocker can be achieved by installing a ratchet mechanism on the side plate of one side of the first support 1; wherein the ratchet 8 of the ratchet mechanism is coaxially fixed to the end of the rotating shaft 7, and the ratchet 9 is installed on the side plate; and the ratchet mechanism is covered with a protective shell on the outside, and the protective shell is fixed on the outer wall of the side plate to protect the ratchet mechanism.

[0027] In the turnout height detection device of the utility model, the first support 1 and the second support 2 are placed at the center of the top of the rail to be tested at a distance of 10m, and the chord 3 is tensioned by rotating the rotating shaft 7. At this time, the tensioned chord 3 is along the center line of the top of the rail, and the tension of the chord 3 at this time can be obtained by the force sensor 4. When the tension measured by the force sensor 4 reaches the required size, the height values ​​of multiple measuring points on the rope are measured and determined, and the height correction values ​​at each measuring point can be obtained by adding the droop of the selected chord 3 at each measuring point under the given tension calculated by the suspension cable deflection calculation formula; further, the maximum value and the minimum value in the correction value are subtracted, and recorded as the height difference. This value is qualified if it does not exceed the 2mm specified in the standard.

Claims

1. A turnout height detection device, comprising a first support, a second support and a string; the two ends of the string are respectively connected to the first support and the second support; characterized in that: Also includes a rotating shaft and a force sensor; The rotating shaft is installed on the first support, and both ends are connected to the first support to form a rotating pair; a rocker is installed at one end of the rotating shaft; One end of the force sensor is fixed on the second support, and a data line of the force sensor is routed through a routing hole on the second support to connect to the display; One end of the string is wound around the rotating shaft, and the other end is connected to the force sensor.

2. A fork height detection device as claimed in claim 1, characterized in that: The bottom surfaces of the first support and the second support are grooved, and magnets are installed in the grooves.

3. A fork height detection device as claimed in claim 1, characterized in that: The bottom of the first support and the second support are designed with a C-shaped groove that matches the top of the rail. The C-shaped groove is buckled with the top of the rail and fixed to the top of the rail by bolts.

4. A fork height detection device as claimed in claim 1, characterized in that: A winding groove is provided on the rotating shaft, and the string is wound in the winding groove.

5. A fork height detection device as claimed in claim 1, characterized in that: The rocker is hinged to the shaft, and a handle is provided at the end of the rocker; when the shaft is rotated to the right position, the rocker is rotated 90 degrees horizontally, and the handle at the end of the rocker cooperates with the outer wall of the support to achieve position limiting.

6. A fork height detection device as claimed in claim 1, characterized in that: A ratchet mechanism is installed on a side plate of the first support to limit the rotation of the rocker; wherein the ratchet of the ratchet mechanism is coaxially fixed to the end of the rotating shaft, and the pawl is installed on the side plate.

7. A fork height detection device as claimed in claim 6, characterized in that: The ratchet mechanism is covered with a protective shell on the outside, and the protective shell is fixed on the outer wall surface of the side plate.

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