Shock absorber strength detection device

Abstract

The present application relates to the technical field of strength detection, and particularly relates to a shock absorber strength detection device, fixed support columns and movable support columns are arranged on a base, the movable support columns can slide along guide rails on the base; first and second vertical columns are arranged on the base, the upper end of the first vertical column is rotatably connected with a cross beam, the other end of the cross beam is positionally connected with a clamping groove arranged on the second vertical column; a downward hydraulic cylinder is fixed below the cross beam. Guide rods are arranged on the upper ends of the fixed support columns and the movable support columns, and are used for supporting through the ear plates at the two ends of a measured viscous damper; a push-pull cylinder is arranged between the first vertical column and the movable support column, and is used for driving the movable support column to slide along the guide rails to adjust the support span, so that the measured viscous damper is placed in the state of the shortest stroke or the longest stroke, and then the downward bending load is applied. An installation plate and a camera are arranged on the base, and are used for image interpretation of cracks and bending degrees. The device is reliable in positioning, convenient in adjustment, and is suitable for the detection of bending strength under extreme stroke working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strength detection, in particular to a shock absorber strength detection device. BACKGROUND

[0002] The bending strength and failure mode of the shock absorber (viscous damper) widely used in bridge and track engineering in China are directly related to the safety performance of the structure under the action of earthquake, wind or vehicle load. The existing detection equipment is mainly based on axial pressure or simple three-point bending, and usually loads near the single, middle stroke. When the measured shock absorber is in the extreme position of the shortest stroke or the longest stroke, the internal damping medium distribution, the stress state of the piston and the sealing element, and the constraint mode of the end plate are different from those in the middle stroke, resulting in significant working condition dependence of the bending strength and crack initiation position in the extreme working condition.

[0003] The existing device has the following problems: 1. The supporting span is not adjustable or inconvenient to adjust, and it is difficult to quickly place the measured part in the extreme stroke state; 2. The upper loading member has poor reliability in positioning and limiting, and poor repeatability; 3. There is a lack of visual interpretation of cracks and deflection during loading.

[0004] Therefore, the present application designs a strength detection device which can conveniently switch the stroke state of the measured shock absorber, implement downward bending loading under stable positioning, and image and interpret cracks and deflection. SUMMARY

[0005] The present application provides a shock absorber strength detection device to overcome the shortcomings of the prior art.

[0006] A shock absorber strength detection device, comprising a base, a fixed support and a movable support arranged on the base, a first column and a second column arranged on the base, a cross beam rotatable relative to the first column, and a hydraulic cylinder arranged below the cross beam, a guide rod for supporting the two ends of the measured viscous damper, characterized in that:

[0007] The movable support can slide along the guide rail arranged on the base, and a push-pull cylinder is connected between the first column and the movable support for driving the movable support to move relative to the fixed support to adjust the supporting span, so as to place the viscous damper in the state of the shortest stroke or the longest stroke; the other end of the cross beam can be positioned and connected with the clamping groove fixed on the second column to position the cross beam during loading, and the hydraulic cylinder is arranged downward for applying bending load to the viscous damper for strength detection after positioning the clamping groove.

[0008] Further, in order to better implement the present application, the clamping groove is " " shaped, and a latch is arranged on the opening side of the clamping groove for limiting and preventing the cross beam from being disengaged after the cross beam is inserted.

[0009] Further, in order to better realize the present application, the guide rail is arranged on the base, and the movable support is in sliding connection with the guide rail.

[0010] Further, in order to better realize the present application, the fixed support and the upper end of the movable support are both provided with an upward guide rod for supporting through the hole of the ear plate at both ends of the viscous damper.

[0011] Further, in order to better realize the present application, the cross beam is rotatably connected with the first column, so that the cross beam can be rotated and positioned and connected with the clamping groove when loaded.

[0012] Further, in order to better realize the present application, the first column and the second column are respectively fixed on the left side and the right side of the base.

[0013] Further, in order to better realize the present application, the fixed support is fixedly arranged on the right side of the base, and the movable support is arranged on the guide rail and can be adjusted in distance relative to the fixed support.

[0014] Further, in order to better realize the present application, the base is provided with a mounting plate, and a camera is arranged on the mounting plate for image recognition and interpretation of the crack or bending degree of the viscous damper during loading.

[0015] The present application has the following beneficial effects:

[0016] Under the condition of one clamping, the supporting span is quickly adjusted along the guide rail under the driving of the push-pull cylinder, so that the measured viscous damper is conveniently switched to two extreme states of the shortest stroke and the longest stroke, the working conditions that are difficult to characterize in the traditional middle stroke are covered, and the test preparation time is significantly shortened.

[0017] The upper loading path is formed by the rotation of the cross beam at the first column, the positioning of the clamping groove on the second column, and the mechanical locking of the latch, and is matched with the downward loading of the hydraulic cylinder, so as to effectively suppress eccentricity and lateral interference, and has stable positioning, high repeatability, strong data comparability, and improved reliability and safety of strength detection.

[0018] Through the combination of the simply supported support at both ends of the guide rod and the imaging interpretation of the camera on the mounting plate, the crack and deflection evolution can be recorded synchronously, and the failure process is objectively quantified; the device has strong universality, efficient adjustment, is suitable for different specifications of products, and reduces the detection cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a schematic diagram of the three-dimensional structure of the present application;

[0020] Fig. 2 is a schematic diagram of the three-dimensional structure of the present application;

[0021] Fig. 3 This is the third three-dimensional structure schematic diagram of the present invention.

[0022] In the figure,

[0023] 1. Base, 2. Fixed support column, 3. Movable support column, 4. First upright column, 5. Second upright column, 6. Cross beam, 7. Card slot, 8. Mounting plate, 9. Guide rod, 10. Viscous damper, 101. Guide rail, 401. Push-pull cylinder, 601. Hydraulic cylinder, 701. Bolt, 801. Camera. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Figs. 1-3 This is a specific embodiment of the present invention. This embodiment is a shock absorber strength detection device. A fixed support column 2 is fixed on the right side of the base 1. A guide rail 101 is provided on the base 1. The movable support column 3 is slidably connected to the guide rail 101 and can move linearly along the guide rail 101 to adjust the support span between it and the fixed support column 2.

[0027] The first upright column 4 and the second upright column 5 are respectively fixed on the left side and the right side of the base 1. The upper end of the first upright column 4 is rotatably connected to the cross beam 6. The cross beam 6 can be flipped around the connection point. The other end of the cross beam 6 can be embedded in the card slot 7 fixed at the upper end of the second upright column 5 after flipping. The card slot 7 is a "C" - shaped structure, and a bolt 701 is provided on its open side. When the cross beam 6 is embedded in the card slot 7, the bolt 701 is inserted to limit and prevent the cross beam 6 from coming off, thereby forming a stable upper - part force - bearing closed path and ensuring the consistency of the loading position.

[0028] A downward - facing hydraulic cylinder 601 is fixedly installed below the cross beam 6. After the cross beam 6 is positioned with the card slot 7 and limited by the bolt 701, the hydraulic cylinder 601 starts to work. Its piston rod moves downward and directly acts on the predetermined force - bearing position of the viscous damper 10 to implement downward bending loading to obtain data on bending strength and failure mode

[0029] The upper end of the fixed pillar 2 and the movable pillar 3 is provided with an upward guide rod 9, which is used to pass through the ear plate hole of the viscous damper 10 at both ends, and reliably supports the measured member at both ends. In order to make the viscous damper 10 in the installed state can be placed in different stroke state, the first column 4 and the movable pillar 3 are connected with the push-pull cylinder 401, the extension of the push-pull cylinder 401 drives the movable pillar 3 to slide along the guide rail 101, so as to change the span between the two pillars, so that the viscous damper 10 in the installed state can be placed in the extreme position of the shortest stroke or the longest stroke; then the hierarchical loading is implemented through the hydraulic cylinder 601, and the bending strength and deformation response under the extreme condition are obtained, respectively.

[0030] In order to facilitate the observation of crack initiation and deflection change, the base 1 is provided with a mounting plate 8, and a camera 801 is installed on the mounting plate 8. The camera 801 collects the surface and contour images of the viscous damper 10 in the loading process, and can cooperate with conventional image recognition to judge the crack and bending degree, so as to improve the objectivity and efficiency of detection.

[0031] The embodiment realizes the quick switching of the measured member between the shortest stroke and the longest stroke through "sliding distance adjustment of the movable pillar 3 along the guide rail 101 + driving of the push-pull cylinder 401"; the stable positioning of the upper loading member is ensured through "the rotatable horizontal beam 6 at the first column 4, and the positioning cooperation of the clamping groove 7 on the second column 5 and the bolt 701 limiting"; the repeated downward bending loading condition is formed through "the downward loading of the hydraulic cylinder 601 cooperating with the guide rod 9 at both ends"; and the image collection of the mounting plate 8 and the camera 801 realizes the visual recording of the strength and failure process.

[0032] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application. Other modifications or equivalent replacements to the technical solutions of the present application made by those skilled in the art should be covered in the scope of the claims of the present application, as long as they do not deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A shock absorber strength detection device, comprising a base (1), a fixed support column (2) and a movable support column (3) arranged on the base (1), a first column (4) and a second column (5) arranged on the base (1), a crossbeam (6) rotatable relative to the first column (4), a hydraulic cylinder (601) arranged below the crossbeam (6), and a guide rod (9) for supporting both ends of a measured viscous damper (10), characterized in that: the movable support column (3) is slidable along a guide rail (101) arranged on the base (1), a push-pull cylinder (401) is connected between the first column (4) and the movable support column (3) for driving the movable support column (3) to move relative to the fixed support column (2) to adjust the support span, so as to place the viscous damper (10) in a state of shortest stroke or longest stroke; the other end of the crossbeam (6) is positionally connected with a clamping groove (7) fixed on the second column (5) for positioning the crossbeam (6) during loading, and the hydraulic cylinder (601) is arranged downward for applying a bending load to the viscous damper (10) for strength detection after the clamping groove (7) is positioned; the clamping groove (7) is " " shaped, and a latch (701) is arranged on the opening side of the clamping groove (7) for limiting and preventing the crossbeam (6) from being disengaged after the crossbeam (6) is inserted; the upper ends of the fixed support column (2) and the movable support column (3) are both provided with upward guide rods (9) for penetrating through the ear plate holes at both ends of the viscous damper (10) to support.

2. The shock absorber strength detection device according to claim 1, characterized in that: the guide rail (101) is arranged on the base (1), and the movable support column (3) is slidably connected with the guide rail (101).

3. The shock absorber strength detection device according to claim 1, characterized in that: the crossbeam (6) is rotatably connected relative to the first column (4) so that the crossbeam (6) can rotate and be positionally connected with the clamping groove (7) during loading.

4. The shock absorber strength detection device according to claim 1, characterized in that: the first column (4) and the second column (5) are respectively fixed on the left side and the right side of the base (1).

5. The shock absorber strength detection device according to claim 1, characterized in that: the fixed support column (2) is fixedly arranged on the right side of the base (1), and the movable support column (3) is arranged on the guide rail (101) and can be adjusted in distance relative to the fixed support column (2).

6. The shock absorber strength detection device according to claim 1, characterized in that: an installation plate (8) is arranged on the base (1), and a camera (801) is arranged on the installation plate (8) for image recognition and interpretation of cracks or bending degree of the viscous damper (10) during loading. ​ ​ ​ ​ ​ ​

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