Retarder performance calibration instrument

Abstract

The utility model discloses a retarder performance calibration instrument, relates to retarder detection equipment, and aims to solve the problem of poor field detection accuracy caused by manual discrimination of a retarder. A rack is fixed on a steel rail through a rail grabbing assembly; the coping module is arranged on the rack and can press a cap head of the retarder down to a working distance; the pressure sensor is arranged at the bottom of the coping module and is used for acquiring oil-gas counterforce of a retarder cap fixed on a steel rail; the displacement sensor is arranged on the rack and used for obtaining the movement stroke of the retarder cap head. The beneficial effects are that through a detection structure combining the displacement sensor and the pressure sensor, the performance of the retarder on site is effectively and accurately controlled, it is guaranteed that use of marshalling of a marshalling station is not affected by unqualified performance of the retarder, and the accuracy of on-site detection of the retarder is improved.

Description

Technical Field

[0001] The utility model relates to a deceleration top detection device. Background Art

[0002] Retarder tops are widely used in speed regulation stations. The inspection and maintenance of retarder tops are directly related to the use status of the equipment and driving safety. On-site inspection of retarder top performance is the prerequisite for the repair and maintenance of retarder tops, and it is also the basis for the repair and maintenance of retarder tops, and it is also the guarantee for the normal operation of retarder tops. In the past, on-site inspections relied on the experience of maintenance personnel to manually identify retarder tops, but manual identification cannot scientifically and accurately calibrate equipment parameters, resulting in inconsistent on-site inspection standards, poor inspection accuracy, and difficulty in ensuring maintenance quality, affecting the safe use of retarder top equipment. Utility Model Content

[0003] The utility model aims to solve the problem of poor on-site detection accuracy caused by manual identification of a retarder, and proposes a retarder performance calibration instrument.

[0004] The utility model discloses a deceleration top performance calibration instrument, which comprises a frame, a top pressing module, a rail grabbing assembly, a pressure sensor and a displacement sensor;

[0005] The frame is fixed on the rail by a rail grab assembly;

[0006] The top pressing module is arranged on the frame, and the top pressing module can press the cap of the deceleration top down to the working distance;

[0007] The pressure sensor is arranged at the bottom of the top pressing module, and is used to obtain the oil and gas reaction force of the deceleration top cap head fixed on the rail;

[0008] The displacement sensor is arranged on the frame and is used to obtain the movement stroke of the deceleration top cap head.

[0009] Furthermore, the calibration instrument also includes a digital display box;

[0010] The pressure signal output end of the pressure sensor is connected to the pressure signal input end of the digital display box;

[0011] The displacement signal output end of the displacement sensor is connected to the displacement signal input end of the digital display box;

[0012] The digital display box is arranged at the top of the frame, and is used for displaying the pressure signal of the pressure sensor and the displacement signal of the displacement sensor.

[0013] Further, the top pressing module includes a pressing rod, a supporting rod, a connecting block, a guide rod, a spring, a cantilever shaft seat, a cantilever shaft, a guide rod bottom block fixing part, a pressure sensor adapter, a sensing head and a bushing;

[0014] The pressure rod is a rod-shaped structure, and one end of the pressure rod is connected to the cantilever shaft seat through the cantilever shaft;

[0015] The cantilever shaft seat is fixed on the frame;

[0016] One end of the support rod is axially connected to the middle part of the pressure rod; the other end of the support rod is axially connected to the connecting block;

[0017] The connecting block is fixed on the top of the guide rod;

[0018] The bushing is arranged inside the frame, and the guide rod passes through the bushing;

[0019] The guide rod bottom block fixing piece is fixed to the bottom end of the guide rod;

[0020] The spring is arranged along the guide rod, and the spring is located between the bushing and the connecting block;

[0021] The pressure sensor adapter fixes the pressure sensor to the bottom of the guide rod bottom block fixing piece;

[0022] The induction head is fixed at the bottom of the pressure sensor, and when the induction head contacts the center of the deceleration top cap head, the displacement sensor starts measuring.

[0023] Further, the frame includes columns and beams;

[0024] The upright post is arranged at the top of the rail grabbing assembly;

[0025] The digital display box is fixed on the top of the column;

[0026] One end of the crossbeam is fixed to the middle of the side wall of the column, and the two are perpendicular to each other;

[0027] The cantilever shaft seat is fixed to the upper part of the side wall of the column;

[0028] The bushing of the top pressing die set is arranged inside the cross beam.

[0029] Furthermore, the frame also includes an angle bracket;

[0030] The angle code is arranged at the fixing position of the cross beam and the column.

[0031] Furthermore, the frame also includes a handle;

[0032] The handle is U-shaped, the open end of the U-shaped handle is fixed on the side wall of the column, and the handle is located between the crossbeam and the digital display box.

[0033] Furthermore, the frame also includes an armrest;

[0034] The handrail is arranged on the upper surface of the crossbeam.

[0035] Furthermore, the calibration instrument also includes a displacement sensor bracket;

[0036] The displacement sensor bracket is arranged on the upper surface of the cross beam, and the displacement sensor is fixed on the displacement sensor bracket.

[0037] Further, the rail grabbing assembly includes a contact plate and a fastener;

[0038] The contact plate is a plate-shaped structure, and the contact plate is arranged between the frame and the rail;

[0039] The cross section of the fastener is "L" shaped; and the fastener is fixedly connected to the contact plate to form a fixing groove, and the fixing groove is used to clamp the upper end of the rail inside it.

[0040] Furthermore, the calibration instrument also includes a cantilever bearing seat and a bearing;

[0041] The cantilever bearing seat is fixed on the rail grabbing assembly, and the cantilever of the cantilever bearing seat extends toward the speed reducer top;

[0042] The bearing is fixed at the front end of the cantilever bearing seat, and when the rail grabbing assembly is separated from the rail, the bearing contacts the upper end surface of the rail.

[0043] Compared with the prior art, the utility model has the following beneficial effects: through the structural coordination of the frame and the pressure top module, it is possible to measure the oil and gas reaction force of the deceleration top by using a pressure sensor, and it is also possible to measure the movement stroke of the deceleration top cap head by using a displacement sensor; and then display it through a digital display box; it is possible to effectively identify deceleration tops with unqualified performance, and through a detection structure that combines a displacement sensor with a pressure sensor, it is possible to effectively and accurately control the performance of the on-site deceleration top, and ensure that the deceleration top does not affect the use of the marshaling yard due to unqualified performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the front structure of a retarder performance calibration instrument described in the first specific implementation mode;

[0045] Figure 2 It is a structural schematic diagram of a retarder performance calibration instrument in a pre-pressing state before a pressure top test according to a specific implementation mode 1;

[0046] Figure 3 It is a schematic structural diagram of a top pressing module motion state of a retarder top performance calibration instrument in a top pressing test according to a specific implementation mode 1;

[0047] Figure 4 It is a structural schematic diagram of a digital display box in a specific implementation mode 1;

[0048] Figure 5 This is a structural schematic diagram of the top pressure module in the third specific implementation mode;

[0049] Figure 6 It is a cross-sectional view of the top pressure module in the third specific implementation mode;

[0050] Figure 7 It is a structural schematic diagram of a rack in a fourth specific implementation mode;

[0051] Figure 8 It is a structural schematic diagram of a retarder performance calibration instrument in a tenth specific implementation mode in a normal running state;

[0052] Among them, 1 is a rail; 2 is a deceleration top; 3 is a frame; 3-1 is a column; 3-2 is a crossbeam; 3-3 is an angle code; 3-4 is a handle; 3-5 is an armrest; 4 is a pressure top module; 4-1 is a pressure rod; 4-2 is a support rod; 4-3 is a connecting block; 4-4 is a guide rod; 4-5 is a spring; 4-6 is a cantilever shaft seat; 4-7 is a cantilever shaft; 4-8 is a guide rod bottom block fixing part; 4-9 is a pressure sensor adapter; 4-10 is a sensing head; 4-11 is a bushing; 5 is a rail grab assembly; 5-1 is a contact plate; 5-2 is a fastener; 6 is a digital display box; 7 is a pressure sensor; 8 is a displacement sensor; 9 is a displacement sensor bracket; 10 is a bearing; 11 is a cantilever bearing seat. DETAILED DESCRIPTION

[0053] Specific implementation method 1. Combination Figures 1 to 3 To illustrate this embodiment, the calibration instrument described in this embodiment includes a frame 3, a top pressing module 4, a rail grabbing assembly 5, a pressure sensor 7 and a displacement sensor 8;

[0054] The frame 3 is fixed on the rail 1 through the rail grabbing assembly 5;

[0055] The top pressing module 4 is arranged on the frame 3, and the top pressing module 4 can press the cap of the deceleration top 2 down to the working distance;

[0056] The pressure sensor 7 is arranged at the bottom of the top pressing module 4, and is used to obtain the oil and gas reaction force of the cap head of the deceleration top 2 fixed on the rail 1;

[0057] The displacement sensor 8 is arranged on the frame 3 and is used to obtain the movement stroke of the cap head of the deceleration top 2.

[0058] The working principle of a deceleration top performance calibrator described in the present embodiment is as follows: the frame 3 is fixed on the rail 1 by using the rail grabbing assembly 5, so that the frame 3 remains in a vertical state, and the pressing top module of the frame 3 is aligned with the center of the cap of the deceleration top 2; the pressing top module 4 is used to manually apply pressure, so that the cap of the deceleration top 2 is pressed down to the working distance; in the process of pressing down of the pressing top module 4, the oil and gas reaction force of the deceleration top 2 is measured by the pressure sensor 7, and the movement stroke of the cap of the deceleration top 2 is measured by the displacement sensor; finally, the oil and gas reaction force of the deceleration top 2 and the movement stroke of the cap of the deceleration top 2 are judged to determine whether the detected deceleration top 2 is qualified, thereby improving the accuracy of on-site detection of the deceleration top 2; effectively and accurately controlling the performance of the on-site deceleration top 2 ensures that the deceleration top does not affect the use of the marshaling yard due to unqualified performance.

[0059] In this embodiment, Figure 2 To calibrate the instrument for the pre-pressing state before the top-pressing test, the frame 3 is fixed on the rail 1 through the rail grabbing assembly 5, and the cap of the speed reducer 2 is pressed down to the working distance through the top-pressing module 4 to start the test; Figure 3 To calibrate the instrument, the pressure module moves in the pressure test state. Hold the frame 3 with your left hand and manually apply pressure on the pressure module 4. After pressing the cap of the speed reducer 2 down to the working distance and stabilizing it, release the manual pressure and reset the pressure module 4. After completing the above steps, repeat the above steps to test the next speed reducer 2 until all speed reducers 2 are tested.

[0060] Specific implementation method 2: Combination Figure 4 This embodiment is described. This embodiment further limits the decelerator performance calibration instrument described in the specific embodiment 1. In this embodiment, the calibration instrument further includes a digital display box 6;

[0061] The pressure signal output end of the pressure sensor 7 is connected to the pressure signal input end of the digital display box 6;

[0062] The displacement signal output end of the displacement sensor 8 is connected to the displacement signal input end of the digital display box 6;

[0063] The digital display box 6 is arranged at the top of the frame 3 , and is used to display the pressure signal of the pressure sensor 7 and the displacement signal of the displacement sensor 8 .

[0064] In this embodiment, if Figure 4As shown, the digital display box 6 has four buttons, a charging connector, a data connection interface and a digital display screen. The digital display screen can accurately display various values ​​and data, and the digital display box 6 has the function of storing and transmitting data, which is convenient and fast; at the same time, it can alarm and mark erroneous data to ensure the accuracy of the data; the charging connector is used to charge the digital display box 6 to ensure the power consumption of the digital display box 6; a data connection interface is used to facilitate the transmission of data; the four buttons are: power button, stop button, start button and confirmation button; among them, the function of the power button is to turn on the power of the digital display box 6; the function of the stop button is to alarm after the digital display box 6 identifies erroneous data, use the stop button to end the alarm, and put the digital display box 6 into a non-working standby state; the function of the start button is to put the digital display box 6 into the start test working state; the function of the confirmation button is to adjust the digital display screen of the digital display box 6 to the zero state. After the test is completed, close the digital display box 6 and take it back to charge, check whether the overall structure of the calibrator is loose, and complete the calibration test of the deceleration top 2; click the start button of the digital display box 6, and adjust the digital display screen of the digital display box 6 to the zero state. This state is the best state for the use test of the deceleration top performance calibrator; manually apply pressure on the pressure top module 4; press the cap of the deceleration top 2 down to exceed the standard working distance (60mm) and then reset it. The digital display box 6 automatically collects the instantaneous pressure value of 60mm as the displayed value. The tester checks and records the test value to determine whether the test value of the deceleration top meets the requirements. Repeat the above steps to test the next deceleration top 2 until all deceleration tops 2 are tested.

[0065] Specific implementation method 3: Combination Figure 5 and Figure 6 This embodiment is described. This embodiment further defines a deceleration top performance calibration instrument described in the specific embodiment 1. In this embodiment, the top pressing module 4 includes a pressing rod 4-1, a supporting rod 4-2, a connecting block 4-3, a guide rod 4-4, a spring 4-5, a cantilever shaft seat 4-6, a cantilever shaft 4-7, a guide rod bottom block fixing part 4-8, a pressure sensor adapter 4-9, a sensor head 4-10 and a bushing 4-11;

[0066] The pressure rod 4-1 is a rod-shaped structure, and one end of the pressure rod 4-1 is connected to the cantilever shaft seat 4-6 through the cantilever shaft 4-7;

[0067] The cantilever shaft seat 4-6 is fixed on the frame 3;

[0068] One end of the support rod 4-2 is axially connected to the middle part of the pressure rod 4-1; the other end of the support rod 4-2 is axially connected to the connecting block 4-3;

[0069] The connecting block 4-3 is fixed on the top of the guide rod 4-4;

[0070] The bushing 4-11 is arranged inside the frame 3, and the guide rod 4-4 passes through the bushing 4-11;

[0071] The guide rod bottom block fixing member 4-8 is fixed to the bottom end of the guide rod 4-4;

[0072] The spring 4-5 is arranged along the guide rod 4-4, and the spring 4-5 is located between the bushing 4-11 and the connecting block 4-3;

[0073] The pressure sensor adapter 4-9 fixes the pressure sensor 7 to the bottom of the guide rod bottom block fixing piece 4-8;

[0074] The induction head 4-10 is fixed at the bottom of the pressure sensor 7, and when the induction head 4-10 contacts the center of the cap head of the deceleration top 2, the displacement sensor 8 starts measuring.

[0075] In this embodiment, the pressure rod 4-1 is used as a medium for manually applying pressure; the pressure rod 4-1 is operated to press downward, and through the principle of lever, the cantilever shaft seat 4-6 and the cantilever shaft 4-7 are used as fulcrums, and the guide rod 4-4, the pressure sensor 7, and the induction head 4-10 are driven downward by pressing downward to press the deceleration top 2 to the working distance; after the pressure rod 4-1 stops manually applying pressure, the spring force of the spring 4-5 sequentially lifts the connecting block 4-3, the support rod 4-2 and the pressure rod 4-1 to realize the automatic reset of the top pressing module 4. The function of the bushing 4-11 is to reduce the friction between the guide rod 4-4 and the frame 3, and has a limiting effect on the guide rod 4-4 to prevent the force direction from shifting; the pressure sensor adapter 4-9 is used to facilitate the fixing of the pressure sensor 7.

[0076] Specific implementation method 4. Combination Figure 7 This embodiment is described. This embodiment further defines a deceleration top performance calibration instrument described in the specific embodiment 3. In this embodiment, the frame 3 includes a column 3-1 and a beam 3-2;

[0077] The column 3-1 is arranged at the top of the rail grabbing assembly 5;

[0078] The digital display box 6 is fixed on the top of the column 3-1;

[0079] One end of the crossbeam 3-2 is fixed to the middle of the side wall of the column 3-1, and the two are perpendicular to each other;

[0080] The cantilever shaft seat 4-6 is fixed to the upper part of the side wall of the column 3-1;

[0081] The bushing 4 - 11 of the top pressing die set 4 is arranged inside the cross beam 3 - 2 .

[0082] In this embodiment, the frame 3 composed of the column 3-1 and the beam 3-2 can better and more conveniently set the top pressing module 4. The column 3-1 is the main force-bearing structure and is made of HFS8-4080 profile. The beam 3-2 is a moving track component that limits the guide rod 4-4, which is also made of HFS8-4080 profile.

[0083] Specific implementation method 5. This implementation method further limits the deceleration top performance calibration instrument described in specific implementation method 4. In this implementation method, the frame 3 also includes an angle code 3-3;

[0084] The angle code 3-3 is arranged at the fixing position of the cross beam 3-2 and the column 3-1.

[0085] In this embodiment, the angle bracket 3-3 adopts the HFS88-4040 type angle bracket, and the setting of the angle bracket 3-3 is to increase the stability of the structure of the beam 3-2 and the column 3-1.

[0086] Specific implementation method 6. This implementation method further limits the deceleration top performance calibration instrument described in specific implementation method 4. In this implementation method, the frame 3 further includes handles 3-4;

[0087] The handle 3 - 4 is U-shaped, the open end of the U-shaped handle 3 - 4 is fixed on the side wall of the column 3 - 1 , and the handle 3 - 4 is located between the crossbeam 3 - 2 and the digital display box 6 .

[0088] In this embodiment, the handles 3 - 4 are provided to facilitate the use of the calibrator and to facilitate the movement and transportation of the calibrator.

[0089] Specific implementation method VII. This implementation method further limits the deceleration top performance calibration instrument described in specific implementation method 4. In this implementation method, the frame 3 further includes handrails 3-5;

[0090] The handrail 3-5 is arranged on the upper surface of the beam 3-2.

[0091] In this embodiment, the armrests 3 - 5 are provided to facilitate the use of the calibrator and to facilitate the movement and transportation of the calibrator.

[0092] Specific implementation eight, this implementation further limits the deceleration top performance calibration instrument described in specific implementation four. In this implementation, the calibration instrument further includes a displacement sensor bracket 9;

[0093] The displacement sensor bracket 9 is arranged on the upper surface of the cross beam 3 - 2 , and the displacement sensor 8 is fixed on the displacement sensor bracket 9 .

[0094] In this embodiment, a displacement sensor bracket 9 is added to facilitate fixing the displacement sensor 8 .

[0095] Specific implementation method 9. This implementation method further defines the deceleration top performance calibration instrument described in specific implementation method 4. In this implementation method, the rail grabbing assembly 5 includes a contact plate 5-1 and a fastener 5-2;

[0096] The contact plate 5 - 1 is a plate-shaped structure, and the contact plate 5 - 1 is arranged between the frame 3 and the rail 1;

[0097] The cross section of the fastener 5 - 2 is “L” shaped; and the fastener 5 - 2 is fixedly connected to the contact plate 5 - 1 to form a fixing groove, and the fixing groove is used to clamp the upper end of the rail 1 inside it.

[0098] In this embodiment, the frame 3 is fixed by the cooperation of the contact plate 5-1 and the fastener 5-2, and the fixation is also convenient, making the calibration instrument more practical.

[0099] Specific implementation method 10. Combination Figure 8 This embodiment is described. This embodiment further limits the decelerator performance calibration instrument described in the fourth embodiment. In this embodiment, the calibration instrument further includes a cantilever bearing seat 11 and a bearing 10;

[0100] The cantilever bearing seat 11 is fixed on the rail grabbing assembly 5, and the cantilever of the cantilever bearing seat 11 extends toward the deceleration top 2;

[0101] The bearing 10 is fixed to the front end of the cantilever bearing seat 11 , and when the rail grabbing assembly 5 is separated from the rail 1 , the bearing 10 contacts the upper end surface of the rail 1 .

[0102] In this embodiment, the model of the bearing 10 is UMBH6-20; in order to facilitate the testing of multiple speed reducers 2, a cantilever bearing seat 11 and a bearing 10 are added, and the addition of the cantilever bearing seat 11 and the bearing 10 makes the calibration instrument easy to move; Figure 8 The calibrator is in a normal running state. In this state, check whether the parts of the calibrator are tightened and whether the digital display box 6 is normal. If they are normal, place the outer rim of the bearing 10 on the upper end surface of the rail 1. When running, ensure that the outer rims of multiple bearings 10 are in contact with the upper end surface of the rail 1; the hand-held frame 3 runs on the rail 1, and uses the force in the inward direction to drive the calibrator to run on the rail 1; it stops at the front end of the deceleration top 2, aligns the top pressing module 4 with the center of the cap of the deceleration top 2, buckles the rail grabbing assembly on the outside of the rail, and the running state ends.

[0103] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A retarder performance calibrator, characterized in that: The calibration instrument comprises a frame (3), a top pressing die set (4), a rail grabbing assembly (5), a pressure sensor (7) and a displacement sensor (8); The frame (3) is fixed on the rail (1) via a rail grabbing assembly (5); The top pressing module (4) is arranged on the frame (3), and the top pressing module (4) is capable of pressing the cap of the speed reducer (2) down to a working distance; The pressure sensor (7) is arranged at the bottom of the top pressing module (4) and is used to obtain the oil and gas reaction force of the cap head of the deceleration top (2) fixed on the rail (1); The displacement sensor (8) is arranged on the frame (3) and is used to obtain the movement stroke of the cap head of the deceleration top (2).

2. A retarder performance calibrator according to claim 1, characterized in that: The calibration instrument also includes a digital display box (6); The pressure signal output end of the pressure sensor (7) is connected to the pressure signal input end of the digital display box (6); The displacement signal output end of the displacement sensor (8) is connected to the displacement signal input end of the digital display box (6); The digital display box (6) is arranged at the top of the frame (3), and the digital display box (6) is used to display the pressure signal of the pressure sensor (7) and the displacement signal of the displacement sensor (8).

3. A retarder performance calibrator according to claim 2, characterized in that: The top pressing mold assembly (4) comprises a pressing rod (4-1), a supporting rod (4-2), a connecting block (4-3), a guide rod (4-4), a spring (4-5), a cantilever shaft seat (4-6), a cantilever shaft (4-7), a guide rod bottom block fixing piece (4-8), a pressure sensor adapter (4-9), a sensing head (4-10) and a bushing (4-11); The pressure rod (4-1) is a rod-shaped structure, and one end of the pressure rod (4-1) is connected to the cantilever shaft seat (4-6) through a cantilever shaft (4-7); The cantilever shaft seat (4-6) is fixed on the frame (3); One end of the support rod (4-2) is axially connected to the middle part of the pressure rod (4-1); the other end of the support rod (4-2) is axially connected to the connecting block (4-3); The connecting block (4-3) is fixed on the top end of the guide rod (4-4); The bushing (4-11) is arranged inside the frame (3), and the guide rod (4-4) passes through the bushing (4-11); The guide rod bottom block fixing piece (4-8) is fixed to the bottom end of the guide rod (4-4); The spring (4-5) is arranged along the guide rod (4-4), and the spring (4-5) is located between the bushing (4-11) and the connecting block (4-3); The pressure sensor adapter (4-9) fixes the pressure sensor (7) at the bottom of the guide rod bottom block fixing member (4-8); The induction head (4-10) is fixed at the bottom of the pressure sensor (7), and when the induction head (4-10) contacts the center of the cap of the deceleration top (2), the displacement sensor (8) starts measuring.

4. A retarder performance calibrator according to claim 3, characterized in that: The frame (3) comprises a column (3-1) and a crossbeam (3-2); The upright column (3-1) is arranged at the top end of the rail grabbing assembly (5); The digital display box (6) is fixed on the top of the column (3-1); One end of the crossbeam (3-2) is fixed to the middle of the side wall of the column (3-1), and the two are perpendicular to each other; The cantilever shaft seat (4-6) is fixed on the upper part of the side wall of the column (3-1); The bushing (4-11) of the top pressing die set (4) is arranged inside the crossbeam (3-2).

5. The retarder performance calibrator according to claim 4, characterized in that: The frame (3) further comprises an angle code (3-3); The angle code (3-3) is arranged at the fixing position of the cross beam (3-2) and the column (3-1).

6. The retarder performance calibrator according to claim 4, characterized in that: The frame (3) also includes a handle (3-4); The handle (3-4) is U-shaped, the open end of the U-shaped handle (3-4) is fixed on the side wall of the column (3-1), and the handle (3-4) is located between the crossbeam (3-2) and the digital display box (6).

7. The retarder performance calibrator according to claim 4, characterized in that: The frame (3) also includes an armrest (3-5); The handrail (3-5) is arranged on the upper surface of the crossbeam (3-2).

8. The retarder performance calibrator according to claim 4, characterized in that: The calibration instrument also includes a displacement sensor bracket (9); The displacement sensor bracket (9) is arranged on the upper surface of the crossbeam (3-2), and the displacement sensor (8) is fixed on the displacement sensor bracket (9).

9. The retarder performance calibrator according to claim 1, characterized in that: The rail grabbing assembly (5) comprises a contact plate (5-1) and a fastener (5-2); The contact plate (5-1) is a plate-shaped structure, and the contact plate (5-1) is arranged between the frame (3) and the rail (1); The cross section of the fastener (5-2) is "L"-shaped; and the fastener (5-2) is fixedly connected to the contact plate (5-1) to form a fixing groove, and the fixing groove is used to clamp the upper end of the rail (1) inside it.

10. The retarder performance calibrator according to claim 1, characterized in that: The calibration instrument also includes a cantilever bearing seat (11) and a bearing (10); The cantilever bearing seat (11) is fixed on the rail grabbing assembly (5), and the cantilever of the cantilever bearing seat (11) extends toward the deceleration top (2); The bearing (10) is fixed to the front end of the cantilever bearing seat (11), and when the rail grabbing assembly (5) is separated from the rail (1), the bearing (10) contacts the upper end surface of the rail (1).

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