Electro-hydraulic servo shock absorber double-movement durability testing machine

Abstract

This utility model belongs to the field of testing machines, and relates to the durability testing of shock absorbers, particularly to a dual-action durability testing machine for electro-hydraulic servo shock absorbers. It includes a support frame and upper and lower electro-hydraulic servo actuators mounted on the support frame. Both the upper and lower electro-hydraulic servo actuators are connected to mounting bases, and each mounting base is connected to a hinge base. The hinge base has a U-shaped cross-section, and an oil box is provided between the mounting base and the hinge base. The oil box includes two oil grooves that collect oil from both sides of the hinge base. In this utility model, the hinge base is hinged to the shock absorber. Oil leaking from the shock absorber falls onto the hinge base. Because the hinge base is U-shaped, the oil falls from both sides of the hinge base. The oil box is located below the hinge base, and the two oil grooves are on both sides of the hinge base. Therefore, the oil falling from the hinge base enters the oil box, preventing contamination of the support frame and the lower electro-hydraulic servo actuator.

Description

Technical Field

[0001] This utility model belongs to the field of testing machines, and relates to the durability testing of shock absorbers, and in particular to a dual-action durability testing machine for electro-hydraulic servo shock absorbers. Background Technology

[0002] The main components of the electro-hydraulic servo shock absorber double-action durability testing machine include two electro-hydraulic servo actuators, one above the other. These two actuators repeatedly press against the middle shock absorber to test its damping performance and service life. One important aspect of testing the shock absorber's service life is assessing the wear and aging rate of the oil seal. When the oil seal is severely damaged, the shock absorber begins to leak oil, reducing or even completely eliminating its damping performance. Therefore, during the test, oil will drip from the shock absorber, contaminating the testing machine and making cleaning difficult. Summary of the Invention

[0003] This invention addresses the problem of oil leakage from shock absorbers contaminating the testing machine by providing an electro-hydraulic servo shock absorber dual-action durability testing machine capable of collecting the oil.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an electro-hydraulic servo dual-action durability testing machine, including a bracket and an upper electro-hydraulic servo actuator and a lower electro-hydraulic servo actuator mounted on the bracket. The upper electro-hydraulic servo actuator and the lower electro-hydraulic servo actuator are both connected to a mounting base. The mounting base is connected to a hinge seat. The hinge seat has a U-shaped cross-section. An oil box is provided between the mounting base and the hinge seat. The oil box includes two oil grooves that receive oil from both sides of the hinge seat.

[0005] Preferably, the two oil tanks are connected to a positioning plate at the same end.

[0006] Preferably, the hinge seat includes a screw rod, the mounting base includes a frustum, the frustum has a screw hole at its center, the screw rod is threadedly connected to the screw hole, and an end cap is also threadedly connected to the screw rod, the end cap pressing against the frustum.

[0007] Preferably, the end cap has a protrusion on the side away from the frustum.

[0008] Preferably, the width of the protrusion is smaller than the diameter of the screw.

[0009] Preferably, the oil trough includes a base plate for overlapping with the side of the end cap away from the frustum.

[0010] Preferably, the base plate has grooves corresponding to the protrusions.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] In this invention, the hinge seat is hinged to the shock absorber. The oil leaking from the shock absorber falls onto the hinge seat. Since the hinge seat is U-shaped, the oil falls from both sides of the hinge seat. The oil box is located below the hinge seat, and there are two oil grooves on both sides of the hinge seat. Therefore, the oil falling from the hinge seat enters the oil box, avoiding contamination of the bracket and the lower electro-hydraulic servo actuator.

[0013] The oil box in this invention can be directly inserted between the mounting base and the hinge base, making it easy to install and use, and it will not fall off due to vibration. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an electro-hydraulic servo dual-action durability testing machine;

[0016] Figure 2 This is a structural schematic diagram of the mounting base and hinge base;

[0017] Figure 3 This is a schematic diagram of the oil box structure;

[0018] Figure 4 This is a schematic diagram of the oil box installation.

[0019] In the above figures, 1. Upper electro-hydraulic servo actuator; 2. Lower electro-hydraulic servo actuator; 3. Mounting base; 31. Frustum; 32. End cap; 321. Protrusion; 4. Hinge seat; 41. Screw; 5. Oil box; 51. Oil groove; 52. Positioning plate; 53. Base plate; 54. Groove; 6. Shock absorber. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an electro-hydraulic servo dual-action durability testing machine includes a support frame and an upper electro-hydraulic servo actuator 1 and a lower electro-hydraulic servo actuator 2 mounted on the support frame. Both the upper electro-hydraulic servo actuator 1 and the lower electro-hydraulic servo actuator 2 are connected to a mounting base 3. The mounting base 3 is connected to a hinge seat 4. The hinge seat 4 has a U-shaped cross-section and is used to hinge one end of a shock absorber 6. Therefore, the oil leaking from the shock absorber 6 will first drip onto the hinge seat 4. In order to prevent the oil from dripping onto the support frame, this utility model provides an oil box 5 between the mounting base 3 and the hinge seat 4. The oil box 5 is located below the shock absorber 6. The oil box 5 includes two oil grooves 51 that receive oil from both sides of the hinge seat 4.

[0023] The method of using this utility model is as follows: Since the hinge seat 4 is U-shaped, the oil falls from both sides of the hinge seat 4 and enters the two oil grooves 51.

[0024] To facilitate the installation and removal of the oil box 5;

[0025] Furthermore, the two oil grooves 51 are connected to the positioning plate 52 at the same end, and the distance between the two oil grooves 51 is slightly larger than the diameter of the screw 41.

[0026] Furthermore, the hinge seat 4 includes a screw 41, and the mounting seat 3 includes a frustum 31 with a screw hole at the center. The screw 41 is threadedly connected to the screw hole, and an end cap 32 is also threadedly connected to the screw 41. The end cap 32 presses against the frustum 31, thereby fixing the hinge seat 4 to the mounting seat 3.

[0027] Furthermore, a protrusion 321 is provided on the side of the end cap 32 away from the frustum 31, and the edge of the protrusion 321 smoothly transitions with the surface of the frustum 31.

[0028] Furthermore, the width of the protrusion 321 is smaller than the diameter of the screw 41.

[0029] Furthermore, the oil trough 51 includes a base plate 53 for overlapping with the side of the end cap 32 away from the frustum 31.

[0030] Furthermore, the base plate 53 is provided with a groove 54 corresponding to the protrusion 321.

[0031] The steps for installing the oil box 5 are as follows: Insert the oil box 5 between the hinge seat 4 and the end cap 32, and adjust the direction before insertion. The two oil grooves 51 are respectively on both sides of the screw 41 and the hinge seat 4, so that the bottom plate 53 passes over the protrusion 321. When the bottom plate 53 passes over the protrusion 321, it deforms and bends upward. Then the protrusion 321 can enter the groove 54, and the bottom plate 53 returns to its original position, so that the horizontal movement and rotation of the oil groove 51 are blocked, thereby positioning the oil box 5.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A dual-action durability testing machine for an electro-hydraulic servo damper, comprising a support frame and an upper electro-hydraulic servo actuator and a lower electro-hydraulic servo actuator mounted on the support frame, wherein both the upper and lower electro-hydraulic servo actuators are connected to a mounting base, and the mounting base is connected to a hinge seat, the hinge seat having a U-shaped cross-section, characterized in that... An oil box is provided between the mounting base and the hinge base, and the oil box includes two oil grooves that receive oil from both sides of the hinge base.

2. The electro-hydraulic servo damper double-action durability testing machine according to claim 1, characterized in that, The two oil tanks are connected to a positioning plate at the same end.

3. The electro-hydraulic servo damper double-action durability testing machine according to claim 2, characterized in that, The hinge seat includes a screw rod, and the mounting base includes a frustum. A screw hole is provided at the center of the frustum. The screw rod is threadedly connected to the screw hole. An end cap is also threadedly connected to the screw rod, and the end cap presses against the frustum.

4. The electro-hydraulic servo damper double-action durability testing machine according to claim 3, characterized in that, The end cap has a protrusion on the side away from the truncated cone.

5. The electro-hydraulic servo damper double-action durability testing machine according to claim 4, characterized in that, The width of the protrusion is smaller than the diameter of the screw.

6. The electro-hydraulic servo damper double-action durability testing machine according to claim 5, characterized in that, The oil trough includes a base plate for overlapping with the side of the end cap away from the frustum.

7. The electro-hydraulic servo damper double-action durability testing machine according to claim 6, characterized in that, The base plate has grooves corresponding to the protrusions.

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