Subway train braking distance testing device

Abstract

The utility model discloses a subway train braking distance testing device, which relates to the technical field of braking distance testing and comprises a bearing plate, a placing box is fixedly arranged on the top surface of the bearing plate, a supporting rod is fixedly arranged on the inner bottom wall of the placing box, a mounting box is fixedly arranged on the top surface of the supporting rod, and a flexible rule is arranged on the mounting box. And a driving mechanism is arranged in the mounting box. According to the utility model, through the arrangement of the testing mechanism and the flexible rule, a worker can directly measure the brake distance, and the flexible rule is kept in a horizontal state, so that large-amplitude deviation in the vertical direction and the horizontal direction cannot occur in the moving process, and the accuracy and the reliability of measured data are ensured; clear water can be added into the containing box, so that the overall weight of the containing box is reduced, the overall stability is improved, and compared with bolt installation, the method does not need to permanently change the ground and is more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of braking distance testing equipment, in particular to a braking distance testing device for a subway train. Background Art

[0002] The subway is an urban rail transit system that mainly operates underground. Due to its large carrying capacity, fast speed and punctuality, the subway has gradually become the first choice for more and more citizens to travel. Since the subway carries a large number of passengers, the operation of the subway must be absolutely safe, so the subway must undergo strict quality and performance inspections before it is officially put into operation.

[0003] The subway braking distance test is an important test item. Due to the high speed and large mass of the subway, when encountering an emergency, the subway must have good braking and stopping performance. At present, when testing the subway braking distance, it is necessary to install the subway braking distance test equipment on the subway. During installation, the test equipment needs to be fixed in the corresponding position by bolts and other fasteners. Due to the large number of bolts that need to be fixed, the installation and disassembly of the test equipment is cumbersome, which is not conducive to the rapid maintenance of the test equipment. In addition, the bolts are prone to rust and lock during long-term use, which causes many inconveniences for later disassembly. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0005] A subway train braking distance testing device comprises a load-bearing plate, a placement box is fixedly arranged on the top surface of the load-bearing plate and a support rod is fixedly arranged on the inner bottom wall of the placement box, a mounting box is fixedly arranged on the top surface of the support rod and a tape measure is arranged on the mounting box, a driving mechanism is arranged inside the mounting box and the driving mechanism is used to reel the tape measure into the mounting box, a testing mechanism is arranged at one end of the tape measure away from the mounting box and the testing mechanism is used to measure the braking distance.

[0006] Furthermore, the driving mechanism includes a rotating rod rotatably connected to the bottom wall of the placement box, the top end of the rotating rod passes through the installation box and a handle is fixedly provided at the end, and the outer wall of the rotating rod is fixedly connected to the tape measure.

[0007] Furthermore, the testing mechanism includes a rectangular hole constructed on one side of the end of the tape measure, and the inner wall of the rectangular hole is slidably connected to a first measuring ruler, the outer wall of the first measuring ruler is marked with first scale lines, and the end of the first measuring ruler is slidably connected to a second measuring ruler, and the outer wall of the second measuring ruler is marked with second scale lines.

[0008] Furthermore, a drain pipe is installed on one side of the outer wall of the placement box, and a control water valve is installed on one side of the outer wall of the drain pipe.

[0009] Furthermore, the outer wall of the handle is covered with a rubber sleeve.

[0010] Furthermore, a fixing ring is fixedly provided on one side of the top surface of the installation box, a connecting sleeve is fixedly provided on one side of the outer wall of the handle and a spring is fixedly provided on the inner bottom wall of the connecting sleeve, a movable plate is fixedly provided on one end of the spring away from the inner bottom wall of the connecting sleeve and a connecting rod is fixedly provided on the bottom surface of the movable plate, a limiting ring is fixedly provided on one end of the connecting rod away from the movable plate, and a notch is constructed on one side of the outer wall of the limiting ring.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. In the utility model, through the setting of the testing mechanism and the tape measure, the staff can directly measure the braking distance, and keep the tape measure in a horizontal state, and there will be no large upward, downward, leftward or rightward deviation during the movement, thereby ensuring the accuracy and reliability of the measurement data.

[0013] 2. The utility model can add clean water to the interior of the placement box through the arrangement of the placement box, the drain pipe and the control water valve, thereby reducing the overall weight of the placement box and increasing the overall stability. Compared with bolt installation, this method does not require permanent changes to the ground and is also more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the testing mechanism of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the placement box of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the fixing ring of the utility model.

[0018] Figure numerals: 1, load-bearing plate; 2, placement box; 3, support rod; 4, installation box; 5, tape measure; 6, driving mechanism; 601, rotating rod; 602, handle; 7, testing mechanism; 701, first measuring ruler; 702, second measuring ruler; 8, drain pipe; 9, water control valve; 10, fixing ring; 11, connecting sleeve; 12, spring; 13, connecting rod; 14, limiting ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0020] The present application provides a subway train braking distance test device, which is mainly used to solve the problem that the subway braking distance test device needs to be fixed at the corresponding position by bolts and other fasteners during installation, and the installation and disassembly are relatively cumbersome, and provides the following technical solutions. Figure 1-Figure 4 Make a detailed description:

[0021] A subway train braking distance testing device comprises a load-bearing plate 1, a placement box 2 is fixedly arranged on the top surface of the load-bearing plate 1, a support rod 3 is fixedly arranged on the inner bottom wall of the placement box 2, a mounting box 4 is fixedly arranged on the top surface of the support rod 3, a flexible ruler 5 is arranged on the mounting box 4, a driving mechanism 6 is arranged inside the mounting box 4, the driving mechanism 6 is used to reel the flexible ruler 5 into the interior of the mounting box 4, a testing mechanism 7 is arranged at one end of the flexible ruler 5 away from the mounting box 4, the testing mechanism 7 is used to measure the braking distance, and its specific components are: a rectangular hole is constructed on one side of the end of the flexible ruler 5, and a first measuring ruler 701 is slidably connected to the inner wall of the rectangular hole, the outer wall of the first measuring ruler 701 is marked with a first scale line, a second measuring ruler 702 is slidably connected to the end of the first measuring ruler 701, the outer wall of the second measuring ruler 702 is marked with a second scale line, a drain pipe 8 is installed on one side of the outer wall of the placement box 2, and a control water valve 9 is installed on one side of the outer wall of the drain pipe 8.

[0022] The specific operation method and working principle of the device are as follows: during the working process, the staff can move the device to the work site, and then fill the inside of the placement box 2 with water to increase the overall weight of the device and increase the stability of the device. Then the subway train passes through the placement box 2 and starts braking until it stops completely. Then the staff can pull the first measuring ruler 701 and the second measuring ruler 702 to move, and then move to the vicinity of the train head, and then push the first measuring ruler 701 so that the first measuring ruler 701 fits the train head, and then stand the second measuring ruler 702 on the bottom surface. Then the staff can measure the braking distance according to the scale on the soft ruler 5. In addition, through the setting of the first measuring ruler 701 and the second measuring ruler 702, the staff can slide the first measuring ruler 701 up and down when measuring, so as to observe the height of the first measuring ruler 701 by observing the second scale line, so as to avoid the first measuring ruler 701 being too high or too low to affect the measurement result of the soft ruler 5.

[0023] like Figure 1 and Figure 3As shown, in some embodiments, the driving mechanism 6 includes a rotating rod 601 rotatably connected to the inner bottom wall of the installation box 4, the top of the rotating rod 601 passes through the installation box 4 and a handle 602 is fixedly provided at the end, the outer wall of the rotating rod 601 is fixedly connected to the tape measure 5, and the outer wall of the handle 602 is provided with a rubber sleeve. More specifically, the operation method and working principle of the driving mechanism 6 are that during the working process, the staff can rotate the handle 602 so that the handle 602 drives the rotating rod 601 to rotate, thereby rolling up the tape measure 5 and rolling the tape measure 5 into the interior of the installation box 4.

[0024] like Figure 1 and Figure 4 As shown, in some embodiments, a fixing ring 10 is fixedly provided on one side of the top surface of the installation box 4, a connecting sleeve 11 is fixedly provided on one side of the outer wall of the handle 602, and a spring 12 is fixedly provided on the inner bottom wall of the connecting sleeve 11, a movable plate is fixedly provided on one end of the spring 12 away from the inner bottom wall of the connecting sleeve 11, and a connecting rod 13 is fixedly provided on the bottom surface of the movable plate, a limiting ring 14 is fixedly provided on one end of the connecting rod 13 away from the movable plate, and a notch is configured on one side of the outer wall of the limiting ring 14. More specifically, after the staff has stored the tape measure 5 into the interior of the installation box 4, the limiting ring 14 can be pulled to move the limiting ring 14 downward (at this time, the spring 12 is in a stretched state), hooking the fixing ring 10, thereby fixing the rotating rod 601 to prevent the tape measure 5 from detaching from the installation box 4 during the movement.

[0025] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A subway train braking distance testing device, characterized in that: The invention comprises a carrying plate (1), a placing box (2) is fixedly arranged on the top surface of the carrying plate (1), and a supporting rod (3) is fixedly arranged on the inner bottom wall of the placing box (2), a mounting box (4) is fixedly arranged on the top surface of the supporting rod (3), and a flexible ruler (5) is arranged in the mounting box (4), a driving mechanism (6) is arranged inside the mounting box (4), and the driving mechanism (6) is used to roll the flexible ruler (5) into the interior of the mounting box (4), and a testing mechanism (7) is arranged at one end of the flexible ruler (5) away from the mounting box (4), and the testing mechanism (7) is used to measure the braking distance.

2. A subway train braking distance testing device according to claim 1, characterized in that: The driving mechanism (6) comprises a rotating rod (601) rotatably connected to the inner bottom wall of the installation box (4), the top end of the rotating rod (601) passes through the installation box (4) and a handle (602) is fixedly provided at the end, and the outer wall of the rotating rod (601) is fixedly connected to the tape measure (5).

3. A subway train braking distance testing device according to claim 1, characterized in that: The testing mechanism (7) comprises a rectangular hole constructed at one side of the end of the tape measure (5), and a first measuring ruler (701) is slidably connected to the inner wall of the rectangular hole, and the outer wall of the first measuring ruler (701) is marked with first scale lines, and the end of the first measuring ruler (701) is slidably connected to a second measuring ruler (702), and the outer wall of the second measuring ruler (702) is marked with second scale lines.

4. A subway train braking distance testing device according to claim 1, characterized in that: A drainage pipe (8) is installed on one side of the outer wall of the placement box (2), and a control water valve (9) is installed on one side of the outer wall of the drainage pipe (8).

5. A subway train braking distance testing device according to claim 2, characterized in that: The outer wall of the handle (602) is covered with a rubber sleeve.

6. A subway train braking distance testing device according to claim 2, characterized in that: A fixing ring (10) is fixedly provided on one side of the top surface of the installation box (4), a connecting sleeve (11) is fixedly provided on one side of the outer wall of the handle (602), and a spring (12) is fixedly provided on the inner bottom wall of the connecting sleeve (11), a movable plate is fixedly provided on one end of the spring (12) away from the inner bottom wall of the connecting sleeve (11), and a connecting rod (13) is fixedly provided on the bottom surface of the movable plate, a limiting ring (14) is fixedly provided on one end of the connecting rod (13) away from the movable plate, and a notch is constructed on one side of the outer wall of the limiting ring (14).

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