Support sliding plate seismic mitigation and isolation test platform

Abstract

The utility model belongs to the technical field of seismic mitigation and isolation test platforms, and discloses a support sliding plate seismic mitigation and isolation test platform. The main technical characteristics are as follows: the die comprises a frame body, an upper die, a movable die and a lower die, the upper die is fixedly connected with an upper servo hydraulic cylinder fixed on the frame body through an upper vertical load sensor, a lower servo hydraulic cylinder is arranged on the frame body below the lower die, the lower die is fixedly connected with a lower servo hydraulic cylinder fixed on the frame body through a lower vertical load sensor, and the movable die is fixedly connected with the lower servo hydraulic cylinder through a lower vertical load sensor. A movable mold vertical displacement detection plate is arranged on the side face of the movable mold, a laser displacement sensor corresponding to the movable mold vertical displacement detection plate is arranged on the frame body above the movable mold, and the laser displacement sensor is in control connection with the upper servo hydraulic cylinder and the lower servo hydraulic cylinder. Compared with the prior art, the movable die only moves horizontally and does not move vertically relative to the frame body, horizontal friction force borne by the horizontal load sensor and the movable die is the same, test data are more accurate, and in the moving process of the movable die, the phenomenon that support sliding plates in the upper die and the lower die are abraded eccentrically is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration reduction and isolation test platforms, in particular to a bearing slide plate vibration reduction and isolation test platform. Background Art

[0002] During the production process of the support skateboard, in order to test the performance of the support skateboard, it is necessary to use a support skateboard vibration isolation test platform to conduct a wear resistance test on the support skateboard. The currently used support skateboard vibration isolation test platform includes a frame, an upper mold, a movable mold and a lower mold. The rear end of the movable mold is provided with a horizontal connecting rod. The rear end of the horizontal connecting rod is movably connected to the horizontal push rod of the horizontal push-pull hydraulic cylinder through a connecting pin. A horizontal load sensor is provided on the horizontal push rod. The upper mold is fixedly connected to the upper servo hydraulic cylinder fixed on the frame through the upper vertical load sensor. The lower mold is fixed on the frame below the lower mold. The two support skateboards are respectively installed in the upper mold and the lower mold, and the upper hydraulic cylinder is used to press down so that the two support skateboards are pressed against the friction plate of the movable mold. The movable mold is pushed forward and pulled backward by the horizontal push-pull hydraulic cylinder, and the movable mold slides between the upper and lower support skateboards. The friction coefficient and other parameters of the support skateboard are obtained. The above-mentioned support skateboard vibration isolation test platform has the following defects:

[0003] First, because the lower mold is fixed on the frame, the vertical pressure comes from the upper hydraulic cylinder. During the test, the support slide and the movable mold will wear due to friction. Because the lower mold is fixed, the upper mold and the movable mold will move downward. The center position of the movable mold and the telescopic axis of the horizontal push-pull hydraulic cylinder are not in a straight line. Therefore, during the pulling process of the horizontal push-pull hydraulic cylinder, the horizontal friction force exerted on the horizontal load sensor and the movable mold is different, and the obtained test data is inaccurate. In addition, during the movement of the movable mold, the support slides in the upper and lower molds are prone to wear.

[0004] Secondly, in order to test the degree of wear of the support slide, a first displacement sensor is provided on the frame above the upper mold. The first telescopic rod of the first displacement sensor is connected to the side of the upper vertical load sensor. In this way, the degree of wear is recorded in real time. Since a support slide is placed in the upper mold and the lower mold, the existing support slide vibration isolation test platform can only test the joint wear of two support slides, and cannot test the wear of each support slide separately, so the test data is inaccurate. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a bearing slide plate vibration reduction and isolation test platform with more accurate test data and no bearing slide plate wearing deviation.

[0006] In order to solve the above problems, the technical solution adopted by the support slide plate seismic isolation test platform of the present invention is: it includes a frame, an upper mold, a movable mold and a lower mold, a horizontal connecting rod is provided at the rear end of the movable mold, and the rear end of the horizontal connecting rod is movably connected to the horizontal push rod of the horizontal push-pull hydraulic cylinder through a connecting pin, a horizontal load sensor is provided on the horizontal push rod, the upper mold is fixedly connected to the upper servo hydraulic cylinder fixed on the frame through the upper vertical load sensor, a lower servo hydraulic cylinder is provided on the frame below the lower mold, and the lower mold is fixedly connected to the lower servo hydraulic cylinder fixed on the frame through the lower vertical load sensor, a movable mold vertical displacement detection plate is provided on the side of the movable mold, and a laser displacement sensor corresponding to the movable mold vertical displacement detection plate is provided on the frame above the movable mold, and the laser displacement sensor is control-connected to the upper servo hydraulic cylinder and the lower servo hydraulic cylinder.

[0007] Its additional technical features are:

[0008] A first displacement sensor is provided on the frame above the upper mold, and the first telescopic rod of the first displacement sensor is connected to the side of the upper mold. A second displacement sensor is provided on the frame below the lower mold, and the second telescopic rod of the second displacement sensor is connected to the side of the lower vertical load sensor.

[0009] Compared with the prior art, the support slide plate vibration isolation test platform provided by the present invention has the following advantages: First, since it includes a frame, an upper mold, a movable mold and a lower mold, a horizontal connecting rod is provided at the rear end of the movable mold, and the rear end of the horizontal connecting rod is movably connected to the horizontal push rod of the horizontal push-pull hydraulic cylinder through a connecting pin, a horizontal load sensor is provided on the horizontal push rod, the upper mold is fixedly connected to the upper servo hydraulic cylinder fixed on the frame through the upper vertical load sensor, a lower servo hydraulic cylinder is provided on the frame below the lower mold, and the lower mold is connected to the upper servo hydraulic cylinder through the lower vertical load sensor. The device is fixedly connected to the lower servo hydraulic cylinder fixed on the frame, a movable mold vertical displacement detection plate is provided on the side of the movable mold, and a laser displacement sensor corresponding to the movable mold vertical displacement detection plate is provided on the frame above the movable mold. The laser displacement sensor is controlled and connected with the upper servo hydraulic cylinder and the lower servo hydraulic cylinder. During the test, when the support slide becomes thinner due to friction, the movable mold will move downward, and the distance between the laser displacement sensor on the frame above the movable mold and the vertical displacement detection plate will become longer. The laser displacement sensor transmits the signal to the upper servo hydraulic cylinder. The hydraulic cylinder and the lower servo hydraulic cylinder, by retracting the push rod of the upper servo hydraulic cylinder and raising the push rod of the lower servo hydraulic cylinder a corresponding distance, cause the movable mold to move only horizontally relative to the frame, without vertical movement. In this way, the vertical centerline of the movable mold is always on the same horizontal plane as the central axis of the horizontal push rod of the horizontal push-pull hydraulic cylinder. In other words, the horizontal friction force exerted on the horizontal load sensor and the movable mold is the same, resulting in more accurate test data. During the movement of the movable mold, the support slides in the upper and lower molds will not wear out. Secondly, a first displacement sensor is provided on the frame above the upper mold, the first telescopic rod of the first displacement sensor is connected to the side of the upper mold, and a second displacement sensor is provided on the frame below the lower mold, the second telescopic rod of the second displacement sensor is connected to the side of the lower vertical load sensor. During the test, since the movable mold does not move vertically, the displacement value generated by the first displacement sensor is the wear amount of the support slide located in the upper mold, and the displacement value generated by the second displacement sensor is the wear amount of the support slide located in the lower mold, resulting in more accurate data. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram of the support slide plate vibration isolation test platform of the utility model;

[0011] Figure 2 for Figure 1 AA section view of the bearing slide isolation test platform;

[0012] Figure 3 This is a top view of the bearing slide plate seismic isolation test platform. DETAILED DESCRIPTION

[0013] The structure and operating principle of the support slide plate vibration isolation test platform of the utility model are further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0014] like Figure 1 、 Figure 2 and Figure 3 As shown, the structural diagram of the support slide vibration isolation test platform of the utility model comprises a frame 1, an upper die 2, a movable die 3 and a lower die 4. A horizontal connecting rod 5 is provided at the rear end of the movable die 3. The rear end of the horizontal connecting rod 5 is movably connected to the horizontal push rod 7 of the horizontal push-pull hydraulic cylinder 6 by a connecting pin 8. A horizontal load sensor 9 is provided on the horizontal push rod 7. The upper die 2 is fixedly connected to the upper servo hydraulic cylinder 11 fixed on the frame 1 through the upper vertical load sensor 10. A lower servo hydraulic cylinder 12 is provided on the frame 1 below the lower die 4. The lower die 4 is fixedly connected to the lower servo hydraulic cylinder 12 fixed on the frame 1 through the lower vertical load sensor 13. A movable die vertical displacement detection plate 14 is provided on the side of the movable die 3. A laser displacement sensor 15 corresponding to the movable die vertical displacement detection plate 14 is provided on the frame 1 above the movable die 3. The laser displacement sensor 15 is control-connected to the upper servo hydraulic cylinder 11 and the lower servo hydraulic cylinder 12.

[0015] During the test, when the support slide becomes thinner due to friction, the movable mold 3 will move downward, and the distance between the laser displacement sensor 15 on the frame 1 above the movable mold 3 and the vertical displacement detection plate 14 will become longer. The laser displacement sensor 15 transmits the signal to the upper servo hydraulic cylinder 11 and the lower servo hydraulic cylinder 12. The top rod of the upper servo hydraulic cylinder 11 retracts and the top rod of the lower servo hydraulic cylinder 12 rises a corresponding distance, so that the movable mold 3 only moves horizontally relative to the frame 1, and does not move vertically. In this way, the vertical center line of the movable mold is always on the same horizontal plane as the center axis of the horizontal top rod of the horizontal push-pull hydraulic cylinder. In other words, the horizontal load sensor and the movable mold are subjected to the same horizontal friction force, the test data is more accurate, and during the movement of the movable mold, the support slides in the upper and lower molds will not wear out.

[0016] A first displacement sensor 16 is provided on the frame 1 above the upper mold 2, and the first telescopic rod 17 of the first displacement sensor 16 is connected to the side of the upper vertical load sensor 10. A second displacement sensor 18 is provided on the frame 1 below the lower mold 4, and the second telescopic rod 19 of the second displacement sensor 18 is connected to the side of the lower vertical load sensor 13. During the test, since the movable mold 4 does not displace in the vertical direction, the displacement value generated by the first displacement sensor 16 is the wear amount of the support slide located in the upper mold, and the displacement value generated by the second displacement sensor 18 is the wear amount of the support slide located in the lower mold, and the data is more accurate.

[0017] The protection scope of the present invention is not limited to the above embodiments. As long as the structure is the same or similar to the structure of the support slide plate vibration isolation test platform of the present invention, it falls within the protection scope of the present invention.

Claims

1. A support slide plate seismic isolation test platform, comprising a frame, an upper die, a movable die, and a lower die. The movable die is provided with a horizontal connecting rod at the rear end. The rear end of the horizontal connecting rod is movably connected to the horizontal push rod of the horizontal push-pull hydraulic cylinder via a connecting pin. A horizontal load sensor is provided on the horizontal push rod. The upper die is fixedly connected to an upper servo hydraulic cylinder fixed to the frame via an upper vertical load sensor. The following features are present: A lower servo hydraulic cylinder is provided on the frame below the lower mold, and the lower mold is fixedly connected to the lower servo hydraulic cylinder fixed on the frame through a lower vertical load sensor. A movable mold vertical displacement detection plate is provided on the side of the movable mold, and a laser displacement sensor corresponding to the movable mold vertical displacement detection plate is provided on the frame above the movable mold. The laser displacement sensor is control-connected to the upper servo hydraulic cylinder and the lower servo hydraulic cylinder.

2. The support slide plate seismic isolation test platform according to claim 1, characterized in that: A first displacement sensor is provided on the frame above the upper mold, and the first telescopic rod of the first displacement sensor is connected to the side of the upper mold. A second displacement sensor is provided on the frame below the lower mold, and the second telescopic rod of the second displacement sensor is connected to the side of the lower vertical load sensor.

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