Special measuring combination tool for height of vehicle-mounted signal underbody equipment

Abstract

The utility model relates to the technical field of special height measurement combination tools, in particular to a special height measurement combination tool for vehicle-mounted signal underbody equipment. Comprising a U-shaped strip, a round hole is formed in the U-shaped strip, a polytetrafluoroethylene rod is connected into the round hole in a sliding mode, and a fixing assembly is connected to the polytetrafluoroethylene rod in a sliding mode. The number of the U-shaped strips is two, and the opposite ends of the two U-shaped strips are connected through a hinge. According to the utility model, through the arrangement of the U-shaped strip, the polytetrafluoroethylene rod and the iron disc, the height measurement precision is greatly improved; at the same time, the original three-person measurement needs mutual coordination of wire drawing, leveling and measurement, and now, only one person is needed to complete the measurement, so that the labor cost is reduced, and the measurement efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of height-specific measurement combination tools, in particular to a height-specific measurement combination tool for vehicle-mounted signal undercarriage equipment. Background Art

[0002] The query transponder antenna realizes the train positioning function by continuously reading two trackside beacons and calculating with the speed sensor;

[0003] The proximity sensor provides additional position information to the vehicle on-board controller (VOBC) during the station stop to achieve accurate stopping of the train, allowing the platform\train doors to open for passengers to get on and off the train.

[0004] The physical height of the query transponder antenna and the physical height of the proximity sensor (physical height, i.e. the vertical distance from the bottom surface of the device to the upper surface of the rail), and the accuracy of the sensing height are related to the train positioning and accurate train parking. They need to be accurately measured during maintenance. However, the traditional measuring tools in the industry are relatively simple (proximity sensor test disc (metal disc), long rope, tape measure). The measurement method is as follows:

[0005] (1) Query the physical height of the transponder antenna and proximity sensor. Traditional tool measurement method: Two people straighten a long rope and place it on the top of two steel rails. The third person uses a steel ruler to press against the bottom surface of the equipment. The scale where the steel ruler intersects with the bottom surface of the long rope is the height of the equipment.

[0006] (2) The traditional tool measurement method for proximity sensor sensing height is as follows: one person holds the proximity sensor test disk with both hands and slowly moves it upward from the bottom of the proximity sensor. When the proximity sensor indicator light turns red, the test disk is manually suspended in the air, and another person holds a steel tape measure to measure the height.

[0007] Existing measurement tools have the following five defects:

[0008] (1) The long rope used in the measurement process needs to be manually leveled and straightened. It is inevitable that the long rope will fall to a certain extent in the middle due to gravity or insufficient tension, affecting the measurement accuracy;

[0009] (2) The long rope used for measurement is easily damaged due to its own material and long-term excessive straightening, and needs to be replaced frequently;

[0010] (3) The steel tape measure used for measurement is too small to ensure that it is perpendicular to the equipment to be tested. The measurement is completely dependent on the measurement personnel's visual judgment of whether it is perpendicular, which makes it easy to tilt and affect the measurement accuracy;

[0011] (4) When measuring the sensing height of the proximity sensor, the proximity plate is heavy and needs to be supported to slowly approach the sensor test plate for measurement. It is easy to shake up and down and left and right, resulting in low measurement accuracy.

[0012] (5) The corners on both sides of the upper surface of the proximity sensor test plate are curved, and the area of ​​the proximity sensor test plate is larger than the proximity sensor. When measuring, the proximity sensor test plate needs to be placed directly below the proximity sensor. As a result, the steel tape measure cannot use the lower surface of the proximity sensor as the measurement starting point. When reading parameters, the specific values ​​cannot be accurately determined and need to be manually estimated, which affects the measurement accuracy.

[0013] When using the existing tools to measure the physical height of the query transponder, the physical height of the proximity sensor, and the sensing height value, the cooperation of multiple people is required and the error is large.

[0014] Due to the large error in the measured values, trains often fail to meet the mark, lose the beacon, or fail to stop due to inaccurate train alignment, which poses a certain safety hazard to driving. The measurement method that requires the cooperation of multiple people wastes manpower costs for on-site equipment maintenance. In addition, the long rope used in measurement is often damaged, so a set of effective measuring tools is urgently needed on site to solve this problem. Utility Model Content

[0015] The purpose of the utility model is to provide a special measurement combination tool for the height of vehicle-mounted signal undercarriage equipment. By setting up U-shaped bars, polytetrafluoroethylene rods and test iron plates, the measurement accuracy can be effectively improved, the labor cost can be reduced, and the measurement efficiency can be improved to solve the problems raised in the above-mentioned background technology.

[0016] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special height measurement combination tool for vehicle-mounted signal undercarriage equipment, comprising a U-shaped bar, a circular hole is opened on the U-shaped bar, a polyfluoro rod is slidably connected in the circular hole, a test iron plate is slidably connected to the polyfluoro rod, and a fixing component is installed at the bottom of the test iron plate.

[0017] Furthermore, two groups of U-shaped bars are provided, and opposite ends of the two groups of U-shaped bars are connected by hinges.

[0018] Furthermore, the fixing assembly includes an iron plate fixing seat, which is installed at the bottom of the test iron plate, is fastened to the test iron plate by threads, and is slidably connected to the polytetrafluoroethylene rod.

[0019] Furthermore, a fastening bolt is threadedly connected to the side wall of the iron plate fixing seat, an iron plate fixing seat knob is installed on one end of the fastening bolt, and the other end of the fastening bolt is fitted on the polytetrafluoroethylene rod.

[0020] Furthermore, the PTFE rod is made of polytetrafluoroethylene material, and the shape of the PTFE rod is designed to be a cylinder that is wide at the top and narrow at the bottom. The top is 40mm in diameter and 5mm in thickness, and the bottom cylinder has a diameter of 20mm for easy carrying and use, and a length of 400mm.

[0021] Furthermore, the U-shaped bar is made of U-shaped aluminum bar material, and the lengths of the two groups of U-shaped bars are both 900 mm. The circular hole is opened at 760 mm of one group of U-shaped bars, and the diameter of the circular hole is 21 mm.

[0022] The beneficial effects of the utility model are:

[0023] The utility model greatly improves the measurement accuracy of height by arranging U-shaped bars, polytetrafluoroethylene rods and test iron plates; at the same time, during the original measurement, two people were required to pull the wire, one person was required to level, and three people were required to cooperate and coordinate with each other to complete the measurement, but now only one person is needed to complete it, which reduces labor costs and improves measurement efficiency.

[0024] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure according to an embodiment of the utility model is shown;

[0027] Figure 2 A schematic structural diagram of an iron plate according to an embodiment of the utility model is shown.

[0028] In the figure: 110, U-shaped bar; 120, round hole; 210, polytetrafluoroethylene rod; 310, iron plate; 340, iron plate fixing seat; 350, fastening bolt; 360, iron plate fixing seat knob. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-2 The utility model provides a technical solution: a special height measurement combination tool for vehicle-mounted signal undercarriage equipment. The utility model comprises a U-shaped bar 110, a round hole 120 is formed on the U-shaped bar 110, a polytetrafluoroethylene rod 210 is slidably connected in the round hole 120, a test iron plate 310 is slidably connected to the polytetrafluoroethylene rod 210, and a fixing component is installed at the bottom of the test iron plate 310.

[0031] The test iron plate 310 is set to be rectangular, and the test iron plate 310 can detect the sensor more accurately, that is, the test iron plate 310 can completely cover the sensor.

[0032] A support plate is also provided on the top of the polytetrafluoroethylene rod 210, and the support plate is attached to the bottom of the sensor, so that the polytetrafluoroethylene rod 210 can be attached to the sensor vertically.

[0033] The U-shaped bars 110 are provided in two groups, and opposite ends of the two groups of U-shaped bars 110 are connected by hinges.

[0034] The fixing assembly includes a fastening bolt 350 , which is threadedly connected to the side wall of the iron plate fixing seat 340 , and an iron plate fixing seat knob 360 is installed at one end of the fastening bolt 350 .

[0035] The U-shaped bar 110 is made of a lightweight U-shaped aluminum bar that is not easily deformed. The track gauge is 1435mm. Two U-shaped aluminum bars are designed, each with a length of 900mm. A round hole with a diameter of 21mm is opened at a length of 760mm in one of the bars. The two U-shaped bars 110 are connected by a hinge in the middle. The U-shaped bar 110 is strong, not easily deformed, light, and easy to carry. The shortcomings of long ropes that are difficult to straighten, the middle section that is easy to sag, and easy to be damaged and need to be frequently replaced are solved. In order to facilitate operation and carrying, the U-shaped bar is designed to be foldable.

[0036] The PTFE rod 210 developed in this project is made of polytetrafluoroethylene material, commonly known as the "king of plastics". It is white and waxy and can be used for a long time at -180 to 260°C. This material has an extremely low friction coefficient, strong hardness, light weight, and is not easy to deform, making it easy to carry. The shape of the PTFE rod 210 is designed to be a cylinder that is wide at the top and narrow at the bottom. The top is 40mm in diameter and 5mm in thickness, which is easy to contact the object being measured vertically. The bottom cylinder has a diameter of 20mm, which is convenient for people to carry and use. The length is 400mm, which is of moderate size. Considering the problem of convenient reading, the surface of the PTFE rod 210 is scaled with a laser to facilitate accurate reading by the operator.

[0037] The function of the test iron plate 310 is the same as that of the proximity sensor test plate. The test iron plate 310 is designed to be 300*172mm according to the size of the proximity test plate. A 27mm diameter round hole is opened in the middle of the test iron plate 310. The test iron plate 310 is designed with an iron plate fixing seat 340 and an iron plate fixing seat knob 360 with an inner diameter of 20.4mm to ensure that the test iron plate 310 can be smoothly moved up and down without obstruction when it is put on the PTFE rod 210. The iron plate fixing seat 340 is also equipped with a fastening bolt 350 for the measurement personnel to fasten the bolt 350 with one hand after measuring the sensing height to fix the position of the measurement test iron plate 310, which is convenient for fast and accurate reading.

[0038] Method for measuring the physical height of the transponder antenna:

[0039] When measuring the height of the equipment, fold and open the two folded U-shaped bars 110, and place the flat side horizontally between the two rails. Adjust the position of the U-shaped bar 110 left and right so that the round hole of the U-shaped bar 110 faces the flat bottom of the equipment. Insert the polytetrafluoroethylene rod 210 into the round hole, and the wide base of the upper surface of the polytetrafluoroethylene rod 210 rests on the flat surface of the transponder antenna. Observe with the human eye that the lower surface of the U-shaped bar 110 is flush with the scale value of the polytetrafluoroethylene rod 210. This scale is the physical height of the transponder antenna.

[0040] Proximity sensor sensing height measurement method:

[0041] Before measurement, put the test iron plate 310 on the cylinder of the PTFE rod 210, and horizontally press the top of the larger diameter side of the PTFE rod 210 cylinder against the lower surface of the proximity sensor. The measurement personnel slowly move the test iron plate 310 up and down until the proximity sensor working light turns red. At this time, rotate the iron plate fixing seat knob 360 with one hand, and read the scale of the test iron plate 310 on the cylinder of the PTFE rod 210 at this time, which is the measured sensing height value.

[0042] Proximity sensor physical height measurement method:

[0043] When measuring the height of the equipment, fold and open the two folded U-shaped bars 110, and place the flat side horizontally between the two rails. Adjust the position of the U-shaped bar 110 left and right so that the round hole of the U-shaped bar 110 faces the flat bottom of the equipment. Insert the polytetrafluoroethylene rod 210 into the round hole. The wide base of the upper surface of the polytetrafluoroethylene rod 210 rests against the center of the lower surface of the proximity sensor. The human eye observes the lower surface of the U-shaped bar 110 and the scale value of the polytetrafluoroethylene rod 210 flush. This scale is the physical height of the proximity sensor.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special height measurement combination tool for vehicle-mounted signal undercarriage equipment, characterized in that: The invention comprises a U-shaped bar (110), wherein a round hole (120) is formed on the U-shaped bar (110), a polyfluorocarbon rod (210) is slidably connected in the round hole (120), a test iron plate (310) is slidably connected to the polyfluorocarbon rod (210), and a fixing component is installed at the bottom of the test iron plate (310).

2. A vehicle-mounted signal vehicle undercarriage equipment height special measurement combined tool according to claim 1, characterized in that: Two groups of the U-shaped bars (110) are provided, and opposite ends of the two groups of the U-shaped bars (110) are connected via hinges.

3. A vehicle-mounted signal vehicle undercarriage equipment height special measurement combination tool according to claim 2, characterized in that: The fixing assembly comprises an iron plate fixing seat (340), the iron plate fixing seat (340) being mounted on the bottom of the test iron plate (310), the iron plate fixing seat (340) being fastened to the test iron plate (310) by means of threads, and the iron plate fixing seat (340) being slidably connected to the polytetrafluoroethylene rod (210).

4. A vehicle-mounted signal vehicle undercarriage equipment height special measurement combined tool according to claim 3, characterized in that: A fastening bolt (350) is threadedly connected to the side wall of the iron plate fixing seat (340), an iron plate fixing seat knob (360) is mounted on one end of the fastening bolt (350), and the other end of the fastening bolt (350) is attached to the polytetrafluoroethylene rod (210).

5. A vehicle-mounted signal vehicle undercarriage equipment height special measurement combined tool according to claim 4, characterized in that: The tetrafluoroethylene rod (210) is made of polytetrafluoroethylene material. The tetrafluoroethylene rod (210) is designed to be a cylinder that is wide at the top and narrow at the bottom. The top has a diameter of 40 mm and a thickness of 5 mm. The bottom has a diameter of 20 mm for easy carrying and use. The length is 400 mm.

6. A vehicle-mounted signal undercarriage equipment height special measurement combined tool according to claim 5, characterized in that: The U-shaped bars (110) are made of U-shaped aluminum bars, and the lengths of the two groups of U-shaped bars (110) are both 900 mm. The circular holes (120) are opened at 760 mm of one group of U-shaped bars (110), and the diameter of the circular holes (120) is 21 mm.

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