Track parallelism measuring device

Abstract

The utility model relates to the field of railway track laying auxiliary equipment, and discloses a track parallelism measuring device which aims at solving the problems that the length of a track is long, the track distance needs to be measured at multiple positions for multiple times in order to guarantee the track parallelism, time and labor are wasted, and the efficiency is low. Two trolley handles and two ultrasonic sensor fixing seats are arranged on a connecting shaft of the axle; a shell of the encoder is fixed to the end of the connecting shaft, the distance between the tracks is measured through the two ultrasonic sensors, the two gears drive the encoder motor to rotate when the main wheel rotates, the number of turns of rotation of the main wheel can be known through changes of pulse signals received by the encoder, and then the advancing distance of the track parallelism measuring device can be known. And high-precision detection of the parallelism of the double tracks at different positions is realized.

Description

Technical Field

[0001] The utility model relates to the field of railway track laying auxiliary equipment, and more specifically, to a track parallelism measuring device. Background Art

[0002] Track parallelism is of great significance to the normal running safety of vehicles. If the two laid tracks are not parallel in the forward direction, or even not parallel within a very short certain distance, it may cause a rollover accident. Therefore, the parallelism of the laid tracks must meet the relevant engineering requirements. Track parallelism is generally reflected by the change in the span of a set of tracks at different mileages. When there is no deformation of the track, the distance between the straight lines represented by the two tracks is equal to the theoretical span of the track. At present, the distance between the two tracks is usually measured by the operator using a track gauge to measure the distance between the two tracks. Each time the track distance is measured, the operator must bend down to locate, calibrate, and read the data. Due to the long length of the track, a large number of measurements are required. The existing measurement method requires the operator to spend a lot of physical strength for track measurement and is very inefficient. Under the conditions of today's technological development, how to achieve convenient and accurate detection of the parallelism of railway tracks while minimizing the labor intensity and fatigue of workers has become a problem that needs to be solved urgently. Summary of the invention

[0003] In view of the above problems, the utility model provides a track parallelism detection device, which can more conveniently and accurately measure the track spacing and ensure the parallelism of the tracks.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A track parallelism measuring device comprises a main wheel, an auxiliary wheel and an axle, wherein the two ends of the axle are rotatably connected to the main wheel and the auxiliary wheel respectively; a first distance measuring component for measuring the track width is arranged in the middle of the axle; two ultrasonic sensor fixing seats are arranged on the connecting shaft of the axle; a second distance measuring component for measuring the track length is arranged on the outer side of the main wheel, and the second distance measuring component comprises a first gear, a second gear and an encoder, the center of the first gear coincides with the center of the circle of the main wheel, and the second gear is fixed to the side of the main wheel and meshes with the first gear.

[0006] Furthermore, the axle also includes two trolley handles, one end of which is fixedly connected to the connecting shaft, and the other end of which is provided with a bending structure for easy hand-held pushing.

[0007] Furthermore, the two ultrasonic sensor fixing seats are located on both sides of the center position of the connecting shaft and are symmetrical about the center position of the connecting shaft, and the bottom surface of the ultrasonic sensor fixing seat is parallel to the ground.

[0008] Furthermore, an ultrasonic sensor is provided at one end of the ultrasonic sensor fixing base away from the connecting shaft, and the probe of the ultrasonic sensor faces the direction of a track close to the ultrasonic sensor itself.

[0009] Furthermore, the housing of the encoder is fixed on the end of the connecting shaft; and the first gear is fixed on the rotating shaft of the encoder motor.

[0010] In summary, the beneficial effects of the utility model are:

[0011] The utility model places a main wheel and an auxiliary wheel on the track and advances along the track laying direction. The rotation of the main wheel drives the rotation of the encoder motor. The number of rotations of the encoder motor is the number of rotations of the wheel. The distance the main wheel advances is obtained according to the number of rotations and the circumference of the main wheel. The parallelism of the track is judged by using the track spacings at multiple different positions of the track. If the track spacings at different positions meet the laying parameters, it can be determined that the track parallelism within the measurement range meets the requirements. The distance between the two ultrasonic sensors is a fixed value. The distance between the ultrasonic sensors and the track on one side close to the ultrasonic sensors is measured by the two ultrasonic sensors, so as to obtain the distance between the two tracks. The distance measurement by the ultrasonic sensor is convenient and fast with high measurement accuracy, and it is convenient to timely grasp the change of distance. The track parallelism can be judged by comparing the spacings of the tracks at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is the front view of the utility model;

[0014] Figure 3 It is a side view of the utility model;

[0015] Figure 4 yes Figure 3 A partial enlarged view of part A;

[0016] Figure 5 It is a distance measurement schematic diagram of the utility model.

[0017] In the figure: main wheel 1, auxiliary wheel 2, axle 3, connecting shaft 31, ultrasonic sensor fixing seat 32, trolley handle 33, ultrasonic sensor 4, first gear 5, second gear 6, encoder 7. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0019] like Figure 1 and Figure 2As shown: the track parallelism measuring device includes a main wheel 1, an auxiliary wheel 2 and an axle 3; the two ends of the axle 3 are rotatably connected to the main wheel 1 and the auxiliary wheel 2 respectively; a first distance measuring component for measuring the track width is provided in the middle of the axle 3; a connecting shaft 31 of the axle 3 is provided with two ultrasonic sensor fixing seats 32, the two ultrasonic sensor fixing seats 32 are located on both sides of the center position of the connecting shaft 31, and are symmetrical about the center position of the connecting shaft 31, and the bottom surface of the ultrasonic sensor fixing seat 32 is parallel to the ground; an ultrasonic sensor 4 is provided at one end of the ultrasonic sensor fixing seat 32 away from the connecting shaft 31, and the probe of the ultrasonic sensor 4 faces the direction of the track on one side close to the ultrasonic sensor 4 itself, and the axle 3 also includes two trolley handles 33, one end of the trolley handle 33 is fixedly connected to the connecting shaft 31, and the other end is provided with a bending structure that is convenient for hand-held pushing, so that the user can easily push the utility model to move on the track.

[0020] The outer side of the main wheel 1 is provided with a second distance measuring assembly for measuring the length of the track, and the second distance measuring assembly includes a first gear 5, a second gear 6 and an encoder 7. The center of the first gear 5 coincides with the center of the circle of the main wheel 1, and the second gear 6 is fixed to the side of the main wheel 1 and meshes with the first gear 5; the housing of the encoder 7 is fixed to the end of the connecting shaft 31, the first gear 5 is fixed to the rotating shaft of the encoder 7 motor, the second gear 6 is relatively stationary with the main wheel 1, and the second gear 6 drives the first gear 5 to rotate as the main wheel 1 rotates, and the motor of the encoder 7 rotates under the action of the first gear 5. The encoder 7 motor rotates to complete the counting, and the travel distance of the main wheel 1 can be calculated according to the circumference of the main wheel 1 and the encoder count. The encoder 7 adopts an incremental encoder in the utility model, and the pulse signal output by the encoder is converted into a digital signal by the encoder, and the counting result is displayed on the computer.

[0021] The working process of the utility model is as follows: moving forward along the track laying direction, the rotation of the wheel drives the rotation of the encoder motor, the number of rotations of the encoder motor is the number of rotations of the wheel, and the number of rotations of the wheel multiplied by the circumference of the wheel is the distance the track parallelism measuring device moves forward.

[0022] The utility model is used in the following process: Figure 5 As shown: The ultrasonic sensor is a sensor that converts ultrasonic signals into electrical signals. Since ultrasonic waves will produce significant reflections when they hit the interface to form reflected echoes, when the utility model is used to measure the track spacing, the distance actually measured by the ultrasonic sensor 4 is the distance from the probe of the ultrasonic sensor 4 to the inner side of the track close to the ultrasonic sensor 4 itself, that is, Figure 5The distance d1 and distance d3 are shown in the figure, and the distance d2 between the two ultrasonic sensor probes can be measured with a ruler, and the distance d2 is a fixed value. The sum of the distances d1, d2, and d3 is the track spacing. By comparing the track spacings at different positions, the change in the track spacing represents the parallelism of the tracks. If the difference in the track spacing meets the specific construction requirements, it can be determined that the track parallelism in different measurement position intervals meets the requirements.

[0023] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A track parallelism measuring device, characterized in that: The vehicle comprises a main wheel (1), an auxiliary wheel (2) and an axle (3), wherein two ends of the axle (3) are rotatably connected to the main wheel (1) and the auxiliary wheel (2); A first distance measuring component for measuring the track width is provided in the middle of the axle (3); a connecting shaft (31) of the axle (3) is provided with two ultrasonic sensor fixing seats (32); A second distance measuring assembly for measuring the length of a track is arranged on the outer side surface of the main wheel (1), the second distance measuring assembly comprising a first gear (5), a second gear (6) and an encoder (7), the center of the first gear (5) coincides with the center of a circle of the main wheel (1), and the second gear (6) is fixed to the side surface of the main wheel (1) and meshes with the first gear (5).

2. The track parallelism measuring device according to claim 1, characterized in that: The axle (3) also includes two trolley handles (33), one end of which is fixedly connected to the connecting shaft (31), and the other end of which is provided with a bending structure that is convenient for hand-held pushing.

3. The track parallelism measuring device according to claim 1, characterized in that: The two ultrasonic sensor fixing seats (32) are located on both sides of the center position of the connecting shaft (31) and are symmetrical about the center position of the connecting shaft (31); the bottom surface of the ultrasonic sensor fixing seat (32) is parallel to the ground.

4. The track parallelism measuring device according to claim 1 or 3, characterized in that: An ultrasonic sensor (4) is provided at one end of the ultrasonic sensor fixing seat (32) away from the connecting shaft (31), and the probe of the ultrasonic sensor (4) faces the direction of a side track close to the ultrasonic sensor (4) itself.

5. The track parallelism measuring device according to claim 1, characterized in that: The housing of the encoder (7) is fixed to the end of the connecting shaft (31); the first gear (5) is fixed to the rotating shaft of the encoder (7) motor.

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