Railway fastener elastic base plate vertical dynamic performance test equipment

Abstract

The utility model discloses a railway fastener elastic backing plate vertical dynamic performance test equipment, which comprises a sine displacement excitation loading device, a limit rod and a connecting plate, the upper side of the sine displacement excitation loading device is fixedly connected with a railway fastener body through a bolt, the bottom end of the connecting plate is fixedly connected with an electric push rod, and the electric push rod is fixedly connected with the upper side of the sine displacement excitation loading device. The output end of the electric push rod is fixedly connected with a pressing plate, the pressing plate is connected to the limiting rod in a sleeving mode, the center of the bottom end of the pressing plate is fixedly connected with a first hammer head, the two ends of the pressing plate are fixedly connected with supporting plates, the bottom sides of the supporting plates are in threaded connection with limiting pipes, the upper sides of the limiting pipes make contact with a contact plate, and the contact plate makes contact with the pressing plate. The detachable contact plate is arranged on the bottom side of the pressing plate to increase the contact surface between the contact plate and the pressing plate, the limiting pipe, the limiting cross rod and the clamping block are used for limiting the contact plate, and then the connecting sleeve and the cushion sleeve are used for protecting the first hammer head, so that the knocking structure is convenient to adjust, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of elastic pad technology, specifically to a test device for the vertical dynamic performance of elastic pads for railway fasteners. Background Technology

[0002] Railway fastener elastic pads are elastic components used between rails and rail support structures in railway track systems. They ensure the safety and stability of train operation by buffering vibrations, distributing loads, providing insulation, and adjusting geometric position. During the production process of elastic pads, large fatigue testing machines are used to test their vertical dynamic performance.

[0003] According to Chinese Patent Publication No. CN107228760B, entitled "A Testing Equipment and Control Device for Vertical Dynamic Performance of Elastic Pads for Railway Fasteners," the device describes a mechanism that, under the action of a driving device, can raise and lower an adjusting component. Specifically, the height of the support plate connected to the adjusting component relative to the horizontal plane can rise or fall, thereby adjusting the height of the support plate. This screw jack has an automatic height adjustment function for the support plate, which can greatly reduce the cost of manual adjustment. The screw jack is mainly used to adjust the height of the loading platform after the elastic pad is installed, ensuring that the actuating head contacts the short rail and adjusting the initial preload of the elastic pad.

[0004] Common vertical dynamic performance testing equipment uses a combination of mechanisms such as a screw jack, a sinusoidal displacement excitation loading device, and a vertical loading actuator to test the vertical dynamic performance of an elastic pad. However, during the impact test, it is necessary to test high-frequency low-energy impacts and low-frequency high-energy impacts. The impact structure needs to be replaced during the test, which makes the test quite complicated.

[0005] Therefore, a vertical dynamic performance testing device for railway fastener elastic pads is proposed to solve the problem that the impact structure needs to be replaced according to the testing process, which makes the testing process more complicated. Utility Model Content

[0006] The technical problem to be solved by this utility model is to solve the problem that the hammering structure needs to be replaced according to the testing process, which makes the testing process more complicated. Therefore, a vertical dynamic performance testing device for elastic pads of railway fasteners is proposed.

[0007] The technical solution adopted by this utility model to solve the technical problem is: a vertical dynamic performance testing device for railway fastener elastic pads, including a sinusoidal displacement excitation loading device, a limiting rod, and a connecting plate. The upper side of the sinusoidal displacement excitation loading device is fixedly connected to the railway fastener body by bolts. An electric push rod is fixedly connected to the bottom end of the connecting plate. A pressure plate is fixedly connected to the output end of the electric push rod. The pressure plate is sleeved on the limiting rod. A first hammer head is fixedly connected to the center of the bottom end of the pressure plate. Support plates are fixedly connected to both ends of the pressure plate. A limiting tube is threadedly connected to the bottom side of the support plate. A contact plate is in contact with the upper side of the limiting tube. The contact plate is in contact with the pressure plate. A second hammer head is fixedly connected to the bottom end of the contact plate. Triangular prisms are evenly fixedly connected to the bottom end of the pressure plate. A recess is in contact with one side of the triangular prism, and the recess is located on the contact plate.

[0008] As a preferred technical solution of this utility model, a support rod is threadedly connected to the upper end of the pressure plate, and a support sleeve is sleeved at the bottom end of the support rod. The support sleeve is fixedly connected to the second hammer head. By setting the support rod and the support sleeve, the stability of the second pressure plate when it is struck can be improved.

[0009] As a preferred technical solution of this utility model, a connecting sleeve is fixedly connected to the upper end of the second hammer head, and a pad is glued inside the connecting sleeve. The pad corresponds to the first hammer head. By setting the connecting sleeve and the rubber sleeve, the wear between the first hammer head and the contact plate is reduced when it is idle.

[0010] As a preferred technical solution of this utility model, the contact plate is provided with adaptation grooves on both sides, and a sliding ball is rotatably embedded in the adaptation groove. By setting the adaptation groove and the sliding ball, the movement stability of the contact plate can be improved by the contact limiting rod.

[0011] As a preferred technical solution of this utility model, the bottom end of the contact plate contacts a locking block, and a limiting crossbar is sleeved on the locking block. Both ends of the limiting crossbar are inserted into a limiting tube. By setting the limiting crossbar and the limiting tube, the stability of the contact plate and the second hammer head during impact can be further improved.

[0012] This utility model has the following advantages: by setting a detachable contact plate on the bottom side of the pressure plate to increase the contact surface between the contact plate and the pressure plate, the limiting tube, the limiting crossbar and the locking block are used to limit the contact plate, and the connecting sleeve and the pad can protect the first hammer head, thereby facilitating the adjustment of the striking structure and improving the detection efficiency. Attached Figure Description

[0013] Figure 1 This is a side view of a preferred embodiment of a railway fastener elastic pad vertical dynamic performance testing device.

[0014] Figure 2This is a three-dimensional structural diagram of the contact plate of a railway fastener elastic pad vertical dynamic performance testing device according to a preferred embodiment of the present invention.

[0015] Figure 3 This is a side view of the contact plate of a railway fastener elastic pad vertical dynamic performance testing device according to a preferred embodiment of the present invention.

[0016] Explanation of reference numerals in the attached drawings: 1. Sinusoidal displacement excitation loading device; 2. Limiting rod; 3. Connecting plate; 4. Electric push rod; 5. Pressure plate; 6. First hammer; 7. Support plate; 8. Limiting tube; 9. Contact plate; 10. Second hammer; 11. Railway fastener body; 12. Triangular prism; 13. Support rod; 14. Support sleeve; 15. Connecting sleeve; 16. Adaptive groove; 17. Sliding ball; 18. Limiting crossbar; 19. Locking block. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to the following: Figure 1-3 The device shown is a vertical dynamic performance testing device for a railway fastener elastic pad, comprising a sinusoidal displacement excitation loading device 1, a limiting rod 2, and a connecting plate 3. A railway fastener body 11 is bolted to the upper side of the sinusoidal displacement excitation loading device 1. The elastic pad is located on the upper side of the contact surface between the railway fastener body 11 and the sinusoidal displacement excitation loading device 1, and a spiral lifting device is installed between them for the vertical movement of the railway fastener body 11. An electric push rod 4 is fixedly connected to the bottom end of the connecting plate 3. The extension of the electric push rod 4 causes a pressure plate 5 to move downwards. The output end of the electric push rod 4 is fixedly connected to the pressure plate 5, which is sleeved on the limiting rod 2. A first hammer is fixedly connected to the center of the bottom end of the pressure plate 5. 6. The rapid vibration of the first hammer head 6 in conjunction with the electric push rod 4 can generate a high-frequency, low-energy impact, simulating the high-frequency vibration of the wheel and rail of a high-speed train. The slow vibration of the second hammer head 10 in conjunction with the electric push rod 4 enables the support plates 7 to be fixedly connected to both ends of the pressure plate 5. The bottom side of the support plate 7 is threaded with a limit tube 8. The upper side of the limit tube 8 contacts a contact plate 9. The contact plate 9 contacts the pressure plate 5. The bottom end of the contact plate 9 is fixedly connected with the second hammer head 10. The bottom end of the pressure plate 5 is uniformly fixedly connected with triangular prisms 12. The triangular prisms 12 cooperate with the recesses to increase the support surface and improve the stability of the contact plate 9 connecting to the pressure plate 5. One side of the triangular prism 12 contacts a recess, which is located on the contact plate 9.

[0019] Among them, the upper end of the pressure plate 5 is threaded with a support rod 13, and the bottom end of the support rod 13 is fitted with a support sleeve 14. The support sleeve 14 is fixedly connected to the second hammer head 10. By setting the support rod 13 and the support sleeve 14, a support point can be added to the second hammer head 10, thereby improving its stability.

[0020] The upper end of the second hammer head 10 is fixedly connected to a connecting sleeve 15, and a pad is glued inside the connecting sleeve 15. The pad corresponds to the first hammer head 6. By setting the connecting sleeve 15 and the pad, a buffer can be provided when the second hammer head 10 strikes.

[0021] The contact plate 9 has an adaptation groove 16 on both sides, and a slider 17 is rotatably embedded in the adaptation groove 16. By setting the adaptation groove 16 and the slider 17, the friction between the limit rod 2 and the slider 17 can be reduced, and the contact plate 9 can be easily disassembled and installed.

[0022] The bottom end of the contact plate 9 is in contact with a locking block 19, and a limiting crossbar 18 is sleeved on the locking block 19. Both ends of the limiting crossbar 18 are inserted into the limiting tube 8. By setting the locking block 19 and the limiting crossbar 18, the connection stability between the contact plate 9 and the pressure plate 5 can be further improved.

[0023] Working principle: The railway fastener body 11 is placed on the sinusoidal displacement excitation loading device 1. When the second hammer 10 needs to strike, the contact plate 9 can contact the pressure plate 5, and the limiting tube 8 is connected to the support plate 7. The limiting crossbar 18 and the locking block 19 are further installed. Then, the recess and the triangular prism 12 are used to increase the contact surface and improve the stability of the second hammer 10 striking. When the first hammer 6 needs to strike, the limiting tube 8 can be removed and the contact plate 9 can be taken out to realize the striking of the first hammer 6. This makes it easy to adjust the striking structure and improve the detection efficiency.

[0024] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0025] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A test device for the vertical dynamic performance of a railway fastener elastic pad, comprising a sinusoidal displacement excitation loading device (1), a limiting rod (2), and a connecting plate (3), wherein the upper side of the sinusoidal displacement excitation loading device (1) is fixedly connected to a railway fastener body (11) by bolts, characterized in that, An electric push rod (4) is fixedly connected to the bottom end of the connecting plate (3). A pressure plate (5) is fixedly connected to the output end of the electric push rod (4). The pressure plate (5) is sleeved on the limiting rod (2). A first hammer head (6) is fixedly connected to the center of the bottom end of the pressure plate (5). Support plates (7) are fixedly connected to both ends of the pressure plate (5). A limiting tube (8) is threadedly connected to the bottom side of the support plate (7). A contact plate (9) is in contact with the upper side of the limiting tube (8). The contact plate (9) is in contact with the pressure plate (5). A second hammer head (10) is fixedly connected to the bottom end of the contact plate (9). Triangular prisms (12) are evenly fixedly connected to the bottom end of the pressure plate (5). A recess is in contact with one side of the triangular prism (12). The recess is located on the contact plate (9).

2. The vertical dynamic performance testing equipment for railway fastener elastic pads as described in claim 1, characterized in that, The upper end of the pressure plate (5) is threaded with a support rod (13), and the bottom end of the support rod (13) is fitted with a support sleeve (14), which is fixedly connected to the second hammer (10).

3. The vertical dynamic performance testing equipment for railway fastener elastic pads as described in claim 2, characterized in that, The upper end of the second hammer (10) is fixedly connected to a connecting sleeve (15), and a pad is glued inside the connecting sleeve (15), which corresponds to the first hammer (6).

4. The vertical dynamic performance testing equipment for railway fastener elastic pads as described in claim 1, characterized in that, The contact plate (9) has adaptation grooves (16) on both sides, and a slider (17) is rotatably embedded in the adaptation groove (16).

5. The vertical dynamic performance testing equipment for railway fastener elastic pads as described in claim 4, characterized in that, The bottom end of the contact plate (9) is in contact with a locking block (19), and a limiting crossbar (18) is sleeved on the locking block (19). Both ends of the limiting crossbar (18) are inserted into the limiting tube (8).

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