Resistance testing device convenient for replacing test piece

Abstract

The utility model discloses a resistance testing device convenient to replace a test piece, and particularly relates to the technical field of rail transit resistance testing, which comprises a base and resistance detection equipment fixedly connected with the top of the base. A rotating rod is arranged in a groove, a rotating block is arranged on the outer wall of the rotating rod, a first magnet is arranged on the outer wall of the rotating block, a second magnet is arranged on one side of the first magnet, a moving plate is arranged in the groove, a third magnet is arranged on the outer wall of the moving plate, a positioning plate is arranged on the outer wall of the moving plate, and a rotating disc is arranged on the outer wall of the rotating rod. According to the utility model, when the resistance testing device carries out a longitudinal resistance test on the steel rail, the steel rail detection member is fixed on the sleeper through the mounting column for resistance test, so that the subsequent steel rail detection member is convenient to replace after the test is completed, and the test efficiency is improved. And the problem that the subsequent test progress is influenced due to troublesome replacement of the steel rail detection piece is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit resistance testing, in particular to a resistance testing device which is convenient for replacing a testing piece. Background Art

[0002] Rails are the main components of railway tracks. Its function is to guide the wheels of locomotives and vehicles forward, bear the huge pressure of the wheels, and transmit it to the sleepers. Rails must provide a continuous, smooth and least resistant rolling surface for the wheels. In electrified railways or automatic block sections, rails can also be used as track circuits. The type of rail is expressed in kilograms of rail mass per meter. The rails used on Chinese railways are 75kg / m, 60kg / m, 50kg / m, 43kg / m and 38kg / m. The cross-sectional shape of the rail adopts an I-shaped cross-section with the best bending resistance, which consists of three parts: the rail head, the rail waist and the rail bottom. In order to enable the rail to better withstand forces from all sides and ensure the necessary strength conditions, the rail should be of sufficient height, its head and bottom should have sufficient area and height, and the waist and bottom should not be too thin.

[0003] At present, rail transit needs to conduct resistance tests on rails during production and use. In actual use, when a train runs on a track, in addition to the common vertical and lateral forces, a longitudinal horizontal force will also be generated. It is because of this force that the railway track will move toward the direction of the roadbed. This phenomenon of the rails generating a forward creeping force is the creeping of the railway line, which will pose a certain threat to the safety of railway transportation. Therefore, when the rails are produced, a resistance testing device is needed to conduct a longitudinal resistance test on the rails. Most rails will be anchored on the sleepers through fasteners for resistance testing, which makes it more troublesome to complete the subsequent rail testing and replacement. Utility Model Content

[0004] The purpose of the utility model is to provide a resistance testing device which is convenient for replacing a test piece, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A resistance testing device for facilitating replacement of test pieces comprises a resistance detection device fixedly connected to a base and a top of the base, wherein a sleeper is provided on the top of the base, a mounting groove is provided on the top of the sleeper, a mounting column is provided inside the mounting groove, a groove is provided inside the mounting column, a rotating rod is provided inside the groove, a rotating block is fixedly connected to the outer wall of the rotating rod, a first magnet is fixedly connected to the outer wall of the rotating block, a second magnet is fixedly connected to the outer wall of the rotating block located on one side of the first magnet, a movable plate is provided inside the groove, a third magnet is fixedly connected to the outer wall of the movable plate, and a positioning plate is fixedly connected to the outer wall of the movable plate away from the third magnet.

[0007] Furthermore, a positioning groove is opened inside the installation groove, one end of the positioning plate passes through the outer wall of the installation column and the positioning plate is slidably connected to the installation column, and one end of the positioning plate is slidably connected to the positioning groove. The addition of the positioning plate makes it easy to fix the position of the installation column.

[0008] Furthermore, a turntable is fixedly connected to the outer wall of the rotating rod, and a spring is provided between the outer wall of the turntable and the groove. The addition of the turntable enables the rotating rod to drive the spring to move.

[0009] Furthermore, one end of the spring is fixedly connected to the outer wall of the turntable, and the other end of the spring is fixedly connected to the inside of the groove. The addition of the spring allows the turntable to return to its initial position.

[0010] Furthermore, the top end of the rotating rod passes through the outer wall of the mounting column and the rotating rod is rotatably connected to the mounting column. The outer wall of the mounting column is fixedly connected with a blocking plate. The addition of the second magnet enables the rotating block to drive the third magnet to move.

[0011] Furthermore, a first limiting groove is opened inside the groove, a second limiting groove is opened inside the first limiting groove, the bottom end of the movable plate is fixedly connected to the first limiting plate and the first limiting plate is slidably connected to the first limiting groove, the bottom end of the first limiting plate is fixedly connected to the second limiting plate, the second limiting groove is slidably connected to the second limiting plate, and the addition of the first limiting groove limits the movement trajectory of the first limiting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The resistance testing device for facilitating replacement of test pieces described in the utility model can facilitate replacement of test pieces on the device, by arranging a rotating rod inside the groove, arranging a rotating block on the outer wall of the rotating rod, arranging a first magnet on the outer wall of the rotating block, arranging a second magnet on one side of the first magnet, arranging a movable plate inside the groove, arranging a third magnet on the outer wall of the movable plate, arranging a positioning plate on the outer wall of the movable plate, arranging a turntable on the outer wall of the rotating rod, and arranging a spring on the outer wall of the turntable so that the turntable can return to an initial position. In the utility model, when the resistance testing device performs a longitudinal resistance test on the rail, the rail detection piece will be fixed on the sleeper by the mounting column for resistance test, so that the subsequent rail detection piece can be replaced more conveniently after the test is completed, thereby preventing the problem of affecting the progress of subsequent tests due to the troublesome replacement of the rail detection piece.

[0014] 2. The resistance testing device for facilitating replacement of test pieces described in the utility model can conveniently limit the position of the positioning plate in the device by setting a first limiting plate on the outer wall of the movable plate, setting a first limiting groove inside the groove, setting a second limiting groove inside the first limiting groove, and setting a second limiting plate inside the second limiting groove, so that the position of the movable plate can be conveniently limited. In the utility model, when the movable plate moves, the first limiting plate, the second limiting plate, the first limiting groove and the second limiting groove can limit the position of the movable plate, so that the subsequent positioning plate will not completely enter the groove, so that the mounting column can be conveniently fixed in position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a main cross-sectional view of the installation column of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the positioning plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of the rotating block of the utility model.

[0020] In the figure: 1. base; 2. resistance detection device; 3. sleeper; 4. mounting groove; 5. mounting column; 6. groove; 7. rotating rod; 8. rotating block; 9. first magnet; 10. second magnet; 11. moving plate; 12. third magnet; 13. positioning plate; 14. positioning groove; 15. turntable; 16. spring; 17. blocking plate; 18. first limiting groove; 19. second limiting groove; 20. first limiting plate; 21. second limiting plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] See also Figure 1 , Figure 2 and Figure 4 The utility model provides a resistance testing device that is convenient for replacing test pieces, and the technical solution is as follows:

[0023] A resistance testing device for facilitating replacement of test pieces comprises a base 1 and a resistance detection device 2 fixedly connected to the top of the base 1, a sleeper 3 is provided on the top of the base 1, a mounting groove 4 is provided on the top of the sleeper 3, a mounting column 5 is provided inside the mounting groove 4, a groove 6 is provided inside the mounting column 5, a rotating rod 7 is provided inside the groove 6, a rotating block 8 is fixedly connected to the outer wall of the rotating rod 7, a first magnet 9 is fixedly connected to the outer wall of the rotating block 8, a second magnet 10 is fixedly connected to the outer wall of the rotating block 8 on one side of the first magnet 9, a movable plate 11 is provided inside the groove 6, a third magnet 12 is fixedly connected to the outer wall of the movable plate 11, and a positioning plate 13 is fixedly connected to the outer wall of the movable plate 11 away from the third magnet 12.

[0024] In a preferred embodiment, a positioning groove 14 is opened inside the installation groove 4, one end of the positioning plate 13 passes through the outer wall of the installation column 5 and the positioning plate 13 is slidably connected to the installation column 5, and one end of the positioning plate 13 is slidably connected to the positioning groove 14. When the positioning plate 13 moves, the positioning plate 13 can move inside the groove 6, so that one end of the positioning plate 13 can be separated from the positioning groove 14.

[0025] In a preferred embodiment, a turntable 15 is fixedly connected to the outer wall of the rotating rod 7, and a spring 16 is provided between the outer wall of the turntable 15 and the groove 6. When the rotating rod 7 moves, the rotating rod 7 can drive the turntable 15 to move, so that the turntable 15 can drive the spring 16 to move.

[0026] In a preferred embodiment, one end of the spring 16 is fixedly connected to the outer wall of the turntable 15, and the other end of the spring 16 is fixedly connected to the inside of the groove 6. When the rotating rod 7 moves, the rotating rod 7 can drive the rotating block 8 to move, so that the rotating block 8 drives the first magnet 9 to move.

[0027] Working principle of the utility model: when the device is used and the track test piece needs to be replaced, the rotating rod 7 is rotated at this time to make the rotating rod 7 rotate inside the groove 6, and the rotating rod 7 drives the rotating disk 15 to move at the same time, so that the rotating disk 15 rotates inside the groove 6, and the rotating disk 15 drives the spring 16 to move at the same time, so that the spring 16 is twisted and squeezed, and the rotating rod 7 drives the rotating block 8 to move at the same time, so that the rotating block 8 rotates inside the groove 6, and the rotating block 8 drives the first magnet 9 to move at the same time, so that the first magnet 9 moves in a circular motion inside the groove 6, and at the same time the rotating block 8 drives the second magnet 10 to move, so that the second magnet 10 moves in a circular motion inside the groove 6, so that the first magnet 9 can move away from the third magnet 12, so that the second magnet 10 reaches the side of the third magnet 12, and the second magnet 10 and the third magnet 12 attract each other, so that the third magnet 12 can move toward the rotating block 8, and the third magnet 12 drives the moving plate 11 to move, so that the moving plate 11 is inside the groove 6 When the first and second cams 13 are in contact with each other, the first and second cams 13 are in contact with each other, so that the track test piece is located at the top of the sleeper 3. At this time, the bottom of the mounting post 5 passes through the round hole in the track test piece and enters the mounting groove 4, so that the blocking plate 17 squeezes the track test piece. When one end of the positioning plate 13 reaches one side of the positioning groove 14, the rotating rod 7 is released, and the elastic force of the spring 16 causes the turntable 15 to return to the initial position, thereby causing the subsequent first magnet 9 to reach the side of the third magnet 12. The first magnet 9 and the third magnet 12 repel each other, so that the third magnet 12 drives the moving plate 11 to move, so that the moving plate 11 can drive one end of the positioning plate 13 to enter the positioning groove 14, so that the subsequent track test piece can be easily replaced.

[0028] See also Figure 1 and Figure 3 The utility model provides a technical solution: the top of the rotating rod 7 passes through the outer wall of the mounting column 5 and the rotating rod 7 is rotatably connected to the mounting column 5. The outer wall of the mounting column 5 is fixedly connected with a blocking plate 17. When the rotating block 8 moves, the rotating block 8 can move inside the groove 6, and the rotating block 8 can drive the second magnet 10 to move.

[0029] In a preferred embodiment, a first limiting groove 18 is opened inside the groove 6, a second limiting groove 19 is opened inside the first limiting groove 18, a first limiting plate 20 is fixedly connected to the bottom end of the movable plate 11 and the first limiting plate 20 is slidably connected to the first limiting groove 18, a second limiting plate 21 is fixedly connected to the bottom end of the first limiting plate 20, and the second limiting groove 19 is slidably connected to the second limiting plate 21. When the first limiting plate 20 moves, the first limiting plate 20 can move inside the first limiting groove 18, and the first limiting plate 20 can drive the second limiting plate 21 to move.

[0030] The working principle of the utility model is as follows: when the movable plate 11 moves, the movable plate 11 will drive the first limiting plate 20 to move, so that the first limiting plate 20 can slide inside the groove 6, and the first limiting plate 20 can slide inside the first limiting groove 18. The first limiting plate 20 simultaneously drives the second limiting plate 21 to move, so that the second limiting plate 21 can slide inside the second limiting groove 19. At the same time, the movable plate 11 can drive the positioning plate 13 to move, so that the first limiting plate 20, the second limiting plate 21, the first limiting groove 18 and the second limiting groove 19 can limit the position of the movable plate 11, so that the subsequent positioning plate 13 will not completely enter the groove 6, so that the mounting column 5 can be easily fixed in position.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A resistance testing device that facilitates replacement of a test piece, comprising a base (1) and a resistance detection device (2) fixedly connected to the top of the base (1), characterized in that: A rail sleeper (3) is provided on the top of the base (1), a mounting groove (4) is provided on the top of the rail sleeper (3), a mounting column (5) is provided inside the mounting groove (4), a groove (6) is provided inside the mounting column (5), a rotating rod (7) is provided inside the groove (6), a rotating block (8) is fixedly connected to the outer wall of the rotating rod (7), a first magnet (9) is fixedly connected to the outer wall of the rotating block (8), a second magnet (10) is fixedly connected to the outer wall of the rotating block (8) on one side of the first magnet (9), a moving plate (11) is provided inside the groove (6), a third magnet (12) is fixedly connected to the outer wall of the moving plate (11), and a positioning plate (13) is fixedly connected to the outer wall of the moving plate (11) on the side away from the third magnet (12).

2. The resistance testing device for facilitating replacement of test pieces according to claim 1, characterized in that: A positioning groove (14) is provided inside the installation groove (4), one end of the positioning plate (13) passes through the outer wall of the installation column (5) and the positioning plate (13) is slidably connected to the installation column (5), and one end of the positioning plate (13) is slidably connected to the positioning groove (14).

3. The resistance testing device for facilitating replacement of test pieces according to claim 1, characterized in that: A rotating disk (15) is fixedly connected to the outer wall of the rotating rod (7), and a spring (16) is provided between the outer wall of the rotating disk (15) and the groove (6).

4. The resistance testing device for facilitating replacement of test pieces according to claim 3, characterized in that: One end of the spring (16) is fixedly connected to the outer wall of the rotating disk (15), and the other end of the spring (16) is fixedly connected to the inside of the groove (6).

5. The resistance testing device for facilitating replacement of test pieces according to claim 1, characterized in that: The top end of the rotating rod (7) passes through the outer wall of the mounting column (5) and the rotating rod (7) is rotatably connected to the mounting column (5). The outer wall of the mounting column (5) is fixedly connected with a blocking plate (17).

6. The resistance testing device for facilitating replacement of test pieces according to claim 1, characterized in that: A first limiting groove (18) is provided inside the groove (6), a second limiting groove (19) is provided inside the first limiting groove (18), a first limiting plate (20) is fixedly connected to the bottom end of the movable plate (11), and the first limiting plate (20) is slidably connected to the first limiting groove (18), a second limiting plate (21) is fixedly connected to the bottom end of the first limiting plate (20), and the second limiting groove (19) is slidably connected to the second limiting plate (21).

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