Train speed measuring device

Abstract

The utility model provides a train speed measuring device. The train speed measuring device comprises a main body support, Hall sensors are arranged at the two ends of the main body support, a plurality of fixing mechanisms are arranged on the main body support, and the fixing mechanisms are used for fixing the main body support to a railway track. The train speed measuring device provided by the utility model has the advantages that the train speed measuring device has a portable main body structure, can be conveniently and quickly fixed on steel rails of various models during use, is stable and accurate in measured data and high in measuring speed, can obtain speed data in real time, and can continuously measure for multiple times.

Description

Technical Field

[0001] The utility model relates to the technical field of speed measurement, in particular to a train speed measuring device. Background Art

[0002] Standards and related technical documents such as TB / T 2689.4-2018 "Railway Freight Containerized Transport Part 4: Disposable Container Liquid Container Bags", TB / T 3162.1-2007 "Railway Vehicle Parking Anti-Slip Device Part 1: Internal Support Parking Anti-Slip Device", and PAS1008:2016 "Specification for the performance and testing of a single-use flexitank" stipulate that the accurate train speed needs to be recorded when conducting relevant tests, and these speeds are all low speeds below 20km / h.

[0003] At present, there are several methods for measuring lower vehicle speeds:

[0004] 1. First, measure the length of a small section of the line, then use a stopwatch to record the time it takes for the train to travel from the start to the end of the line, and then calculate the speed.

[0005] Disadvantages: (1) The time recorded by manual meter is inaccurate and has large errors; (2) The speed obtained is the average speed of the entire line and cannot accurately determine the speed of the train at a specific moment.

[0006] 2. Paste a strain gauge at both ends of the rail at a distance of about 40 cm, and then use a data acquisition instrument to connect the strain gauges. When a train passes, the data acquisition instrument can collect the time it takes for the train wheels to pass through the strain gauges. Through system calculation, the vehicle speed can be obtained.

[0007] Disadvantages: Each measurement requires a strain gauge, which is not convenient for testing in a mobile location.

[0008] 3. Use a radar speed meter to measure vehicle speed.

[0009] Disadvantages: The radar speed gun uses the Doppler effect principle to measure the speed of the vehicle. The measurement principle causes the radar speed gun to produce large errors when measuring low speeds.

[0010] Therefore, it is necessary to provide a new train speed measuring device to solve the above technical problems. Utility Model Content

[0011] The technical problem solved by the utility model is to provide a train speed measuring device which adopts a portable main body structure and can be conveniently and quickly fixed on various types of rails when in use, has stable and accurate measurement data, high measurement speed, can obtain speed data instantly, and can measure multiple times continuously.

[0012] In order to solve the above technical problems, the train speed measuring device provided by the utility model includes: a main body bracket, both ends of which are provided with Hall sensors, and the main body bracket is provided with multiple fixing mechanisms, and the fixing mechanisms are used to fix the main body bracket on the truck track.

[0013] Preferably, sensor fixing frames are fixedly mounted on both ends of the main support, and the Hall sensor is fixedly mounted on the corresponding sensor fixing frames.

[0014] Preferably, the number of the fixing mechanisms is two.

[0015] Preferably, the fixing mechanism includes a lateral fixing seat fixedly mounted on the top of the main body bracket and a lower fixing seat fixedly mounted on one side of the main body bracket, and strong magnets are fixedly mounted on the top of the lower fixing seat and one side of the lateral fixing seat.

[0016] Preferably, a strip hole is provided on the lower fixing seat, a fixing bolt is provided on one side of the main body bracket, the fixing bolt passes through the strip hole, and the lower fixing seat is connected to the main body bracket through the fixing bolt.

[0017] Compared with the related art, the train speed measuring device provided by the utility model has the following beneficial effects:

[0018] The utility model provides a train speed measuring device with a stable and ingenious structure, which can be used for various types of rails; the measuring device is portable and easy to move, and can be used in various on-site environments; the measured data is fast, stable and accurate; and the speed can be measured continuously for multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic structural diagram of a preferred embodiment of a train speed measuring device provided by the present invention.

[0020] Numbers in the figure: 1. Hall sensor, 2. Sensor fixing bracket, 3. Lower fixing seat, 4. Strong magnet, 5. Side fixing seat, 6. Main body bracket. DETAILED DESCRIPTION

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

[0022] Please refer to Figure 1 ,in, Figure 1 The schematic diagram of the structure of a preferred embodiment of the train speed measuring device provided by the utility model comprises: a main frame 6, both ends of the main frame 6 are provided with Hall sensors 1, and the main frame 6 is provided with a plurality of fixing mechanisms, and the fixing mechanisms are used to fix the main frame 6 on the truck track.

[0023] Sensor fixing frames 2 are fixedly mounted on both ends of the main frame 6 , and the Hall sensor 1 is fixedly mounted on the corresponding sensor fixing frames 2 .

[0024] In this embodiment, the number of the fixing mechanisms is two.

[0025] The fixing mechanism includes a lateral fixing seat 5 fixedly mounted on the top of the main support 6 and a lower fixing seat 3 fixedly mounted on one side of the main support 6. Strong magnets 4 are fixedly mounted on the top of the lower fixing seat 3 and one side of the lateral fixing seat 5.

[0026] The side surface of the strong magnet 4 on the side fixing seat 5 is adsorbed on the side of the rail head; the top of the strong magnet 4 on the lower fixing seat 3 is adsorbed on the lower side of the rail head.

[0027] A mounting block is rotatably mounted on the lower fixed seat 3, and a strong magnet 4 on the lower fixed seat 3 is fixedly mounted on the mounting block, so that the strong magnet 4 on the lower fixed seat 3 is set to a swingable structure, so as to better adsorb the rail.

[0028] The lower fixing seat 3 is provided with a strip hole, and one side of the main support 6 is provided with a fixing bolt, and the fixing bolt passes through the strip hole. The lower fixing seat 3 is connected to the main support 6 through the fixing bolt.

[0029] The utility model is mainly composed of a main support 6, a side fixing seat 5, a lower fixing seat 3, a sensor fixing frame 2, a strong magnet 4, a Hall sensor 1 and other components. The lower fixing seat 3 is adjustable up and down through a strip hole and a fixing bolt. The height of the lower fixing seat 3 can be adjusted by adjusting the position of the fixing bolt in the strip hole to adapt to the size of rails of different models. The lower fixing seat is a swingable structure, so that the strong magnet 4 on the lower fixing seat 3 is closely attached to the rail and firmly sucked.

[0030] When measuring the train speed, the measuring device can be directly installed on the rail where the speed measurement is required, and then the side fixing seat 5 and the lower fixing seat 3 are adjusted according to the rail model, so that the strong magnet 4 is firmly attached to the side and lower side of the rail head. Finally, the Hall sensor 1 is connected to the dynamic data acquisition instrument through a connecting line. When the wheel passes each Hall sensor 1, the dynamic data acquisition instrument will collect an excitation signal. The dynamic signal acquisition instrument can obtain the accurate train speed through precise calculation.

[0031] Compared with the related art, the train speed measuring device provided by the utility model has the following beneficial effects:

[0032] The utility model provides a train speed measuring device with a stable and ingenious structure, which can be used for various types of rails; the measuring device is portable and easy to move, and can be used in various on-site environments; the measured data is fast, stable and accurate; and the speed can be measured continuously for multiple times.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A train speed measuring device, characterized in that: include: A main body bracket, both ends of which are provided with Hall sensors, and the main body bracket is provided with a plurality of fixing mechanisms, and the fixing mechanisms are used to fix the main body bracket on the railway track.

2. The train speed measuring device according to claim 1, characterized in that: Sensor fixing frames are fixedly mounted on both ends of the main frame, and the Hall sensors are fixedly mounted on the corresponding sensor fixing frames.

3. The train speed measuring device according to claim 1, characterized in that: The number of the fixing mechanisms is two.

4. The train speed measuring device according to claim 1, characterized in that: The fixing mechanism comprises a lateral fixing seat fixedly mounted on the top of the main frame and a lower fixing seat fixedly mounted on one side of the main frame, and a strong magnet (4) is fixedly mounted on the top of the lower fixing seat and one side of the lateral fixing seat.

5. The train speed measuring device according to claim 4, characterized in that: A strip hole is provided on the lower fixing seat, a fixing bolt is provided on one side of the main body bracket, the fixing bolt passes through the strip hole, and the lower fixing seat is connected to the main body bracket through the fixing bolt.

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