Device for detecting compression resistance of high-deformation-resistance O-shaped sealing ring

Abstract

The invention belongs to the technical field of compression resistance detection, and particularly relates to high-deformation-resistance O-shaped sealing ring compression resistance detection equipment which comprises a supporting table, a periodic pressurizing mechanism, a deformation quantity measuring mechanism and a reset quantity measuring mechanism. The periodic pressurizing mechanism has a first state for pressurizing the top of the sealing ring, a second state for maintaining the pressure when the top of the sealing ring is pressurized to a certain position, and a third state for resetting after maintaining the pressure for a period of time; when the periodical pressurizing mechanism is switched to the first state, the deformation quantity measuring mechanism is automatically driven to work, the deformation quantity of the sealing ring is amplified and then measured, and when the periodical pressurizing mechanism is switched to the third state, the reset quantity measuring mechanism is automatically driven to work, the reset quantity of the sealing ring is measured, and the problem that in the detection process, the detection accuracy is high is solved. And the actual dynamic working condition cannot be effectively simulated, so that the effectiveness of the detection result is poor.

Description

Technical Field

[0001] The invention relates to the technical field of pressure resistance detection, in particular to a device for detecting the pressure resistance performance of an O-type sealing ring with high deformation resistance. Background Art

[0002] A sealing ring is an accessory used for sealing. It has the characteristics of corrosion resistance, tear resistance, compression deformation resistance, ozone resistance, sunlight resistance, and weather resistance. Therefore, a sealing ring is needed in the installation process of many mechanical parts.

[0003] The compression test of O-rings is usually to evaluate their deformation ability and sealing performance when subjected to pressure loads. It is one of the test equipment that must be used after the production of the seals. It mainly tests the compression resistance of the seals by sampling inspection. Generally, the pressure applied to the seals is maintained for a certain period of time, and during the test, the deformation of the rubber seals is carefully observed, including the degree of compression, rebound performance and sealing performance, and then the data and observations during the test are recorded.

[0004] The operating environment of sealing rings is often high-frequency dynamic pressure. However, the existing O-ring compression resistance testing mostly uses hydraulic static pressurization or electronic sensors to monitor deformation. The equipment is complex, costly, and difficult to simulate dynamic working conditions. As a result, the test results often cannot correspond to the actual usage conditions, so the effectiveness of the test is poor. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present invention is to provide a highly deformable O-ring compression resistance testing device to replace the traditional O-ring compression resistance testing method, thereby avoiding the problem of inability to effectively simulate actual dynamic working conditions during the testing process, thereby causing poor effectiveness of the test results.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A highly anti-deformation O-ring compression performance testing device, comprising:

[0009] A support platform, the top of which is provided with a positioning groove for placing a sealing ring and a mounting frame;

[0010] A periodic pressurizing mechanism, which is installed on the mounting frame and has a first state of pressurizing the top of the sealing ring, a second state of maintaining the pressure when the pressure reaches a certain position, and a third state of resetting after maintaining the pressure for a certain period of time, wherein the periodic pressurizing mechanism automatically switches in a cycle in the order of the first state, the second state and the third state when working;

[0011] A deformation variable measuring mechanism is installed on the top of the support platform, wherein when the periodic pressurizing mechanism switches from the first state to the second state, the deformation variable measuring mechanism is automatically driven to work, the deformation variable of the sealing ring is amplified and measured, and self-locking is performed;

[0012] A reset amount measuring mechanism is installed on the support platform, wherein when the periodic pressurizing mechanism switches to the third state and drives the deformation measuring mechanism to release the self-locking, the reset amount measuring mechanism is automatically driven to work to measure the reset amount of the sealing ring.

[0013] As a preferred solution of the high deformation resistance O-ring pressure resistance testing equipment described in the present invention, the periodic pressurizing mechanism includes a pressurizing component movably mounted on the mounting frame and a driving component mounted on the mounting frame and transmission connected to the pressurizing component.

[0014] As a preferred solution of the high deformation resistance O-ring pressure resistance testing equipment described in the present invention, the pressure assembly includes a reciprocating push rod movably mounted on the mounting frame, a pressure plate located at the bottom of the reciprocating push rod, and a first elastic member located on both sides of the reciprocating push rod and the top of which is connected to the top of the inner wall of the mounting frame.

[0015] As a preferred solution of the high deformation resistance O-ring compression performance testing device described in the present invention, the driving assembly includes a driving motor mounted on the top of the mounting frame and a cam member having one end connected to the output end of the driving motor and the other end connected to the reciprocating push rod;

[0016] The cam member includes a pressurizing portion, a pressure-maintaining portion and a resetting portion;

[0017] The top of the reciprocating push rod is provided with an extrusion head corresponding to the cam member.

[0018] As a preferred solution of the high deformation resistance O-ring compression performance testing equipment described in the present invention, the deformation variable measuring mechanism includes a deformation amplification component, a deformation dial and a self-locking component for locking the deformation amplification component.

[0019] As a preferred embodiment of the compression resistance detection device for a highly deformation-resistant O-ring according to the present invention, the deformation amplification assembly includes a connecting frame mounted on the top of the support table and a lever assembly with one end hinged to the connecting frame.

[0020] As a preferred embodiment of the compression resistance detection device for a highly deformation-resistant O-ring according to the present invention, the lever assembly includes a connecting plate with one end hinged to the connecting frame and a second elastic member at the top, and an arc-shaped block located at the end of the connecting plate away from the connecting frame and having saw teeth on the outer side wall.

[0021] The side wall of the reciprocating push rod has a pressing plate corresponding to the connecting plate.

[0022] The side wall of the connecting frame has a mounting block with the other end of the second elastic member connected to the bottom.

[0023] The top of the arc-shaped block has a first marking strip corresponding to the deformation scale dial.

[0024] The self-locking component is a ratchet engaged with the saw teeth on the side wall of the arc-shaped block, and the ratchet is mounted on the side wall of the ratchet mounting seat located on the top of the support table.

[0025] As a preferred embodiment of the compression resistance detection device for a highly deformation-resistant O-ring according to the present invention, the reset amount detection mechanism includes a support frame mounted on one side of the ratchet mounting seat, a reset scale plate located on the top of the support frame, a gravity sliding block movably mounted on the side wall of the reset scale plate, and a transmission component with one end drivingly connected to the gravity sliding block and the other end drivingly connected to the ratchet.

[0026] As a preferred embodiment of the compression resistance detection device for a highly deformation-resistant O-ring according to the present invention, the transmission component includes a threaded cylinder mounted on one side of the ratchet mounting seat and connected to the side wall of the ratchet through a rotating shaft, a limiting frame mounted on one side of the ratchet mounting seat, and a threaded rod located inside the threaded cylinder and having a limiting sliding groove on the side wall. The inner wall of the limiting frame has a limiting convex block corresponding to the limiting sliding groove.

[0027] The end of the threaded rod away from the threaded cylinder has a limiting block, and the side of the gravity sliding block adjacent to the limiting block is an inclined surface corresponding to the limiting block.

[0028] The side wall of the gravity sliding block has a second marking strip corresponding to the reset scale plate.

[0029] A torsion spring is sleeved on the connecting shaft between the ratchet and the ratchet mounting seat.

[0030] As a preferred solution of a compression resistance performance detection device for a highly deformation-resistant O-ring according to the present invention, an adjusting assembly for adjusting the pre-tightening force of the first elastic member is provided on the reciprocating push rod. The adjusting assembly includes a moving block slidably mounted on the reciprocating push rod, a fixed block fixedly sleeved on the reciprocating push rod, and an adjusting nut mounted on the moving block and the fixed block.

[0031] Wherein, the bottom of the first elastic member is connected to the top of the moving block.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows. For this compression resistance performance detection device for a highly deformation-resistant O-ring, the periodic pressurizing mechanism sequentially pressurizes, holds pressure, and resets the O-ring, thereby simulating a dynamic alternating load, which is more in line with the actual working environment of the O-ring. The deformation measurement mechanism magnifies and measures the deformation of the O-ring when the pressure reaches the maximum amount, so that the deformed amount is easier to stably observe and measure after magnification. And when self-locking, an observation and measurement time is reserved. When the self-locking is released, the reset amount measurement mechanism automatically measures the reset amount of the O-ring when it is reset. Thus, after periodic measurement, multiple groups of deformation data and reset amount data that are convenient for comparison are obtained, replacing the traditional method of detecting the compression resistance of O-rings, avoiding the problem that the actual dynamic working conditions cannot be effectively simulated during the detection process, and further resulting in poor effectiveness of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0034] Figure 1 It is a schematic structural diagram of a compression resistance performance detection device for a highly deformation-resistant O-ring of the present invention when not pressurized;

[0035] Figure 2 It is a schematic structural diagram of a compression resistance performance detection device for a highly deformation-resistant O-ring of the present invention when pressurized;

[0036] Figure 3 It is a structural exploded view of a compression resistance performance detection device for a highly deformation-resistant O-ring of the present invention;

[0037] Figure 4 It is a schematic structural diagram of a pressurizing assembly of a compression resistance performance detection device for a highly deformation-resistant O-ring of the present invention;

[0038] Figure 5Schematic structural diagram of the cam member of a compression performance testing device for a highly deformation-resistant O-ring of the present invention;

[0039] Figure 6 Exploded view of the deformation measurement structure of a compression performance testing device for a highly deformation-resistant O-ring of the present invention;

[0040] Figure 7 Exploded view of the reset amount measurement mechanism of a compression performance testing device for a highly deformation-resistant O-ring of the present invention.

[0041] In the figure: 100, support platform; 110, positioning groove; 120, clamping member; 130, mounting bracket; 200, periodic pressure applying mechanism; 210, pressure applying assembly; 210a, reciprocating push rod; 210a-1, extrusion head; 210a-2, adjustment assembly; 210a-21, moving block; 210a-22, fixed block; 210a-23, adjusting nut; 210a-3, pressing plate; 210b, pressure plate; 210c, first elastic member; 220, driving assembly; 220a, driving motor; 220b, cam member; 220b-1, pressure applying portion; 220b-2, pressure maintaining portion; 220b-3, reset portion; 300, deformation measurement mechanism; 310, deformation amplification assembly; 310a, connecting frame; 310a-1, mounting block; 310b, lever assembly; 310b-1, connecting plate; 310b-11, second elastic member; 310b-2, arc-shaped block; 320, deformation scale; 330, self-locking assembly; 400, reset amount measurement mechanism; 410, support frame; 420, reset scale plate; 430, gravity sliding block; 440, transmission assembly; 440a, threaded barrel; 440b, limiting frame; 440c, threaded rod; 440c-1, limiting block. Detailed implementation manners

[0042] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings.

[0043] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general ratio, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0044] To make the purpose, technical solutions, and advantages of the present invention clearer, the following will further describe in detail the embodiments of the present invention with reference to the accompanying drawings.

[0045] The present invention provides a detection device for the compressive performance of a highly deformation-resistant O-ring, which replaces the traditional method of detecting the compressive resistance of an O-ring and avoids the problem that in the process of detection, the actual dynamic working conditions cannot be effectively simulated, resulting in poor effectiveness of the detection results.

[0046] Figures 1-7 Shown is a structural schematic diagram of a detection device for the compressive performance of a highly deformation-resistant O-ring according to the present invention. Please refer to Figures 1-7 for a detailed introduction to this detection device for the compressive performance of a highly deformation-resistant O-ring.

[0047] Embodiment 1

[0048] Reference Figures 1-7 , the present invention discloses a detection device for the compressive performance of a highly deformation-resistant O-ring, the main part of which includes a support table 100, a periodic pressurizing mechanism 200, a deformation measurement mechanism 300, and a reset measurement mechanism 400.

[0049] Reference Figures 1-3 , the support table 100 is used to carry the entire device and the O-ring to be measured. The top of the support table 100 has a positioning groove 110 for placing the O-ring and a mounting frame 130. The positioning groove 110 is used to facilitate the placement of the O-ring to be measured for positioning, and the mounting frame 130 is used to conveniently install the periodic pressurizing mechanism 200. Clamping members 120 are provided on both sides of the positioning groove 110 at the top of the support table 100 for clamping and fixing the O-ring to prevent the O-ring from tipping to both sides during pressurization.

[0050] Reference Figures 1-3 , the periodic pressurizing mechanism 200 is used to periodically and reciprocally press the O-ring during operation to simulate a dynamic alternating load. The periodic pressurizing mechanism 200 includes a first state of pressing the top of the O-ring when installed on the mounting frame 130, a second state of maintaining the pressure when pressing to a certain position, and a third state of resetting after maintaining the pressure for a certain period of time. Among them, when the periodic pressurizing mechanism 200 works, it automatically cycles and switches in the order of the first state, the second state, and the third state. Thus, when the periodic pressurizing mechanism 200 works, it continuously and periodically switches among the first state, the second state, and the third state, and then periodically pressurizes, maintains the pressure, and resets the O-ring.

[0051] Reference Figures 1-6The deformation measuring mechanism 300 is used to measure the deformation of the sealing ring when it is squeezed and deformed. The deformation measuring mechanism 300 is installed on the top of the support platform 100. When the periodic pressurizing mechanism 200 switches from the first state to the second state, the deformation measuring mechanism 300 is automatically driven to work, and the deformation of the sealing ring is amplified and measured, and self-locked. Therefore, after the periodic pressurizing mechanism 200 switches from the first state to the second state, the deformation measuring mechanism measures the maximum deformation of the sealing ring, and at this time, its state is self-locked to prevent the sealing ring from resetting and shaking under the action of its own elastic force, thereby facilitating the observation and measurement of data.

[0052] refer to Figures 1-6 The reset amount measuring mechanism 400 is used to measure the reset amount of the sealing ring after it is reset. The reset measuring mechanism is installed on the support platform 100. When the periodic pressurizing mechanism 200 is switched to the third state and drives the deformation measuring mechanism 300 to release the self-locking, the reset amount measuring mechanism 400 is automatically driven to work to measure the reset amount of the sealing ring. Therefore, when the periodic pressurizing mechanism 200 is switched to the third state and the deformation measuring structure contacts the self-locking, the reset amount measuring mechanism 400 starts to work to measure the reset amount of the sealing ring.

[0053] In this embodiment, the specific usage process is as follows: the sealing ring to be measured is placed in the positioning groove 110, and its two sides are clamped by the clamping member 120, and then the periodic pressurizing mechanism 200 starts to work, and the top of the sealing ring is periodically pressurized, maintained and reset, so as to simulate a dynamic working condition environment. When the periodic pressurizing mechanism switches from the first state to the second state, the deformation measurement mechanism 300 amplifies the maximum deformation of the sealing ring and self-locks its state to facilitate observation and obtain deformation data. When the periodic pressurizing mechanism 200 switches to the third state, the deformation measurement mechanism 300 releases the self-locking, and the reset measurement mechanism 400 measures the reset deformation of the sealing ring to obtain the reset data. After multiple measurement records, multiple groups of deformation and reset data are compared to facilitate analysis of the pressure resistance of the sealing ring.

[0054] Example 2

[0055] Based on Example 1, Figures 1-4 The periodic pressurizing mechanism 200 includes a pressurizing component 210 movably mounted on the mounting frame 130 and a driving component 220 mounted on the mounting frame 130 and transmission-connected to the pressurizing component 210. The pressurizing component 210 is used to squeeze the top of the sealing ring when descending, and the driving component 220 is used to periodically drive the pressurizing component 210 to pressurize, maintain pressure, and reset the top of the sealing ring.

[0056] In this embodiment, reference Figures 3-4 The pressurizing assembly 210 includes a reciprocating push rod 210a movably mounted on the mounting frame 130, a pressurizing plate 210b located at the bottom of the reciprocating push rod 210a, and a first elastic member 210c located on both sides of the reciprocating push rod 210a and connected to the top of the inner wall of the mounting frame 130 at the top. The reciprocating push rod 210a is used to facilitate the installation and connection of the pressurizing plate 210b, and the pressurizing plate 210b is used to squeeze the top of the sealing ring. The first elastic member 210c is used to facilitate the reciprocating push rod 210a to rise and reset under its own elastic force when the cam member 220b rotates to the reset portion 220b-3.

[0057] In this embodiment, reference Figures 3-5 The driving assembly 220 includes a driving motor 220a mounted on the top of the mounting frame 130 and a cam member 220b having one end connected to the output end of the driving motor 220a and the other end connected to the reciprocating push rod 210a. The driving motor 220a is used to drive the cam member 220b to rotate at a constant speed during operation, and the cam member 220b is used to periodically extrude, maintain pressure, and reset the extrusion head 210a-1 during rotation.

[0058] refer to Figures 3-5 The cam member 220b includes a pressurizing portion 220b-1, a pressure-maintaining portion 220b-2 and a reset portion 220b-3. The pressurizing portion 220b-1 is used to press the extrusion head 210a-1, so that the reciprocating push rod 210a and the pressurizing block move downward to press the top of the sealing ring. The pressure-maintaining portion 220b-2 is used to keep the sealing ring in an unchanged state of being squeezed, so as to perform a long-term high-pressure simulation on the sealing ring and leave time for observing and reading the deformation data. The reset portion 220b-3 is used to stop squeezing the top of the sealing ring, so as to facilitate the automatic reset of the sealing ring.

[0059] refer to Figure 4 The top of the reciprocating push rod 210a has an extrusion head 210a-1 corresponding to the cam member 220b, which is used to reduce the wear and damage to the top of the reciprocating push rod 210a caused by the long-term rotation of the cam member 220b, thereby extending the service life of the reciprocating push rod 210a and the cam member 220b.

[0060] In this embodiment, the specific working process is as follows: When the driving motor 220a works, it drives the cam member 220b to rotate at a constant speed. When the pressing portion 220b-1 contacts the extrusion head 210a-1, the reciprocating push rod 210a and the pressing block move downward to extrude the top of the sealing ring. When the pressure maintaining portion 220b-2 contacts the extrusion head 210a-1, at this time, the sealing ring remains in the state of being extruded by high pressure, and it is convenient for the staff to observe and read the deformation data of the sealing ring. When the reset portion 220b-3 contacts the extrusion head 210a-1, at this time, under the elastic force of the first elastic member 210c, the reciprocating push rod 210a and the extrusion block move upward, and at this time, the sealing ring is reset. Thus, with the continuous operation of the driving motor 220a, the periodic extrusion work of the sealing ring is completed.

[0061] Embodiment 3

[0062] Based on Embodiment 2, referring to Figures 1-6 , the deformation measurement mechanism 300 includes a deformation amplification component 310, a deformation scale 320, and a self-locking component 330 for locking the deformation amplification component 310. The deformation amplification component 310 is used to amplify the deformation amount of the sealing ring when it is extruded, so as to facilitate the staff to stably observe and read the deformation data. The deformation scale 320 is used to cooperate with the first marking strip to facilitate the reading of the deformation amount of the sealing ring. The self-locking component 330 is used to maintain the state after the deformation amount is amplified, so as to facilitate leaving time for the staff to observe and read the data and avoid the rebound of the sealing ring from affecting the measurement and reading of its maximum deformation amount.

[0063] In this embodiment, referring to Figure 6 , the deformation amplification component 310 includes a connecting frame 310a installed on the top of the support table 100 and a lever assembly 310b hinged at one end to the connecting frame 310a. The connecting frame 310a is used to facilitate the hinging of the lever assembly 310b. The lever assembly 310b is used to amplify the deformation amount of the sealing ring when the reciprocating push rod 210a and the pressing block descend to extrude the sealing ring.

[0064] In this embodiment, referring to Figure 6 , the lever assembly 310b includes a connecting plate 310b-1 hinged at one end to the connecting frame 310a and having a second elastic member 310b-11 at the top, and an arc-shaped block 310b-2 located at the end of the connecting plate 310b-1 away from the connecting frame 310a and having sawteeth on the outer side wall. The connecting rod is used to facilitate the hinging on the connecting frame 310a to form a lever state. The second elastic member 310b-11 is used to maintain the stability of the connecting plate 310b-1. The arc-shaped block 310b-2 is used to amplify the movement when the connecting plate 310b-1 deflects and complete self-locking when the deformation reaches the maximum value through the cooperation of its own sawteeth and the ratchet wheel;

[0065] Referring toFigures 1-6 The side wall of the reciprocating push rod 210a has a pressing plate 210a-3 corresponding to the connecting plate 310b-1, which is used to squeeze one end of the connecting plate 310b-1 when the reciprocating push rod 210a moves downward for pressurization, so that the connecting plate 310b-1 deflects;

[0066] The side wall of the connecting frame 310a has a mounting block 310a-1 with the bottom connected to the other end of the second elastic member 310b-11, which is used to facilitate the installation of the second elastic member 310b-11;

[0067] The top of the arc-shaped block 310b-2 has a first marking strip corresponding to the deformation dial 320, which is used to conveniently observe and read the maximum deformation amount of the sealing ring in cooperation with the deformation dial 320;

[0068] The self-locking assembly 330 is a ratchet wheel meshing with the saw teeth on the side wall of the arc-shaped block 310b-2, which is used to cooperate with the saw teeth of the arc-shaped block 310b-2 to limit and lock the arc-shaped block 310b-2. The ratchet wheel is installed on the side wall of the ratchet wheel mounting seat located at the top of the support platform 100.

[0069] In this embodiment, the specific working process is as follows: when the reciprocating push rod 210a moves downward to drive the pressing block to squeeze the sealing ring, at this time, as the pressing block moves, one end of the connecting plate 310b-1 is pressed. Under the hinge action of the connecting frame 310a, the arc-shaped block 310b-2 is driven to rotate. When the reciprocating push rod 210a moves to the lowest position, at this time, the deformation amount of the sealing ring is the largest, and at this time, the arc-shaped block 310b-2 rotates to the farthest position. The ratchet wheel cooperates with the saw teeth on the side wall of the arc-shaped block 310b-2 to lock the arc-shaped block 310b-2 and the connecting plate 310b-1. At this time, it is convenient for the staff to observe and read the deformation amount data through the cooperation of the first marking strip and the deformation dial 320.

[0070] Embodiment 4

[0071] On the basis of Embodiment 3, referring to Figures 1-7The reset amount detection mechanism includes a support frame 410 installed on one side of the ratchet mounting seat, a reset scale plate 420 located on the top of the support frame 410, a gravity sliding block 430 movably installed on the side wall of the reset scale plate 420, and a transmission assembly 440 having one end transmission connected to the gravity sliding block 430 and the other end transmission connected to the ratchet. The support frame 410 is used to facilitate the installation of the reset scale plate 420, the reset scale plate 420 is used to cooperate with the second marking bar to measure the movement amount of the gravity sliding block 430, the gravity sliding block 430 is used to obtain the reset amount when the sealing ring is reset when it moves downward by its own gravity, and the transmission assembly 440 is used to drive the gravity sliding block 430 to move by reversing the ratchet when the sealing ring is reset and drives the connecting plate 310b-1 and the arc block 310b-2 to reset.

[0072] In this embodiment, reference Figure 7 The transmission assembly 440 includes a threaded barrel 440a installed on one side of the ratchet mounting seat and connected to the ratchet side wall through a rotating shaft, a limiting frame 440b installed on one side of the ratchet mounting seat, and a threaded rod 440c located in the threaded barrel 440a and having a limiting groove on the side wall. The inner wall of the limiting frame 440b has a limiting protrusion corresponding to the limiting groove. The threaded barrel 440a is used to drive the threaded rod 440c to move telescopically along the threaded barrel 440a under the limiting action of the limiting frame 440b when rotating. The limiting frame 440b is used to limit the threaded rod 440c, so as to prevent the threaded barrel 440a from driving the threaded rod 440c to rotate synchronously when rotating. The threaded rod 440c is used to drive the limiting block 440c-1 to move when moving;

[0073] The end of the threaded rod 440c away from the threaded cylinder 440a has a limit block 440c-1, which is used to support and limit the inclined surface of the gravity sliding block 430, so that when the threaded rod 440c moves to drive the limit block 440c-1 to move, it is convenient for the gravity sliding block 430 to slide downward under its own gravity. At this time, the sliding displacement of the gravity sliding block 430 is positively correlated with the movement of the limit block 440c-1 driven by the threaded rod 440c. The side of the gravity sliding block 430 adjacent to the limit block 440c-1 is an inclined surface and corresponds to the limit block 440c-1.

[0074] The side wall of the gravity sliding block 430 has a second marking bar corresponding to the reset scale plate 420, which is used to facilitate observation and reading of the reset amount in cooperation with the reset scale plate 420;

[0075] A torsion spring is sleeved on the connecting shaft of the ratchet and the ratchet mounting seat. When the arc-shaped block 310b-2 is reset and the saw teeth are unlocked from the ratchet, the torsion spring drives the ratchet to reverse under its own torsion force, so as to drive the threaded cylinder 440a to reverse and then drive the threaded rod 440c and the limit block 440c-1 to return to their original positions, so as to re-squeeze the gravity sliding block 430 and make it rise again, thus facilitating the next descent measurement of the gravity sliding block 430.

[0076] In this embodiment, the specific working process is as follows: when the reciprocating push rod 210a and the pressing block move upward, at this time, the sealing ring is reset, and the end of the connecting plate 310b-1 is no longer pressed by the pressing plate 210a-3. At this time, under the elastic force of the second elastic member 310b-11, the connecting plate 310b-1 is reset, so that after the arc-shaped block 310b-2 is reset, it drives the ratchet to rotate, so as to drive the threaded cylinder 440a to rotate. When the threaded cylinder 440a rotates, it drives the threaded rod 440c to move and contract into the threaded cylinder 440a under the limiting action of the limiting frame 440b, driving the limit block 440c-1 to gradually move away from the gravity sliding block 430. At this time, the inclined surface of the gravity sliding block 430 moves downward during the process of gradually separating from the limit block 440c-1, so as to cooperate with the reset scale plate 420 to observe and read the reset amount. After multiple periodic pressurizations, pressure preservations and resets, multiple groups of reset amount data are obtained, so as to facilitate the analysis of the compressive performance of the sealing ring under actual dynamic working conditions. At the same time, by measuring the elastic recovery amount of the sealing ring by gravity, the error caused by manual operation is avoided.

[0077] Embodiment 5

[0078] On the basis of Embodiment 4, in order to facilitate the adjustment of the reset speed of the reciprocating push rod 210a, referring to Figure 4 , an adjusting assembly 210a-2 for adjusting the pre-tightening force of the first elastic member 210c is arranged on the reciprocating push rod 210a. The adjusting assembly 210a-2 includes a moving block 210a-21 slidably mounted on the reciprocating push rod 210a, a fixed block 210a-22 fixedly sleeved on the reciprocating push rod 210a, and an adjusting nut 210a-23 mounted on the moving block 210a-21 and the fixed block 210a-22. The moving block 210a-21 is used to facilitate the installation of the bottom of the first elastic member 210c, and by moving the moving block 210a-21, the first elastic member 210c is stretched and deformed, so as to adjust the pre-tightening force of the first elastic member 210c. The fixed block 210a-22 is used to facilitate the installation of the adjusting nut 210a-23, and the adjusting nut 210a-23 is used to adjust the distance between the moving block 210a-21 and the fixed block 210a-22 when rotating, so as to adjust the length of the first elastic member 210c;

[0079] Among them, the bottom of the first elastic member 210c is connected to the top of the moving block 210a-21. When the adjusting nut 210a-23 is rotated to drive the moving block 210a-21 to move, the first elastic member 210c is stretched or compressed, so as to adjust the initial pre-tightening force of the first elastic member 210c. Thus, when resetting, the restoring force of the first elastic member 210c is greater, and further the reset speed of the reciprocating push rod 210a is adjusted.

[0080] Although the present invention has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high anti-deformation O-ring compressive performance detection device, characterized in that, include: A support platform (100) having a positioning groove (110) for placing a sealing ring and a mounting frame (130) on its top; A periodic pressurizing mechanism (200), comprising a first state for pressurizing the top of the sealing ring, a second state for maintaining the pressure when the pressure reaches a certain position, and a third state for resetting after maintaining the pressure for a certain period of time, wherein when the periodic pressurizing mechanism (200) is in operation, it automatically switches cyclically in the order of the first state, the second state, and the third state; A deformation measurement mechanism (300) is installed on the top of the support platform (100), wherein when the periodic pressurizing mechanism (200) switches from the first state to the second state, the deformation measurement mechanism (300) is automatically driven to work, the deformation of the sealing ring is amplified and measured, and self-locking is performed; A reset amount measuring mechanism (400) is installed on the support platform (100), wherein when the periodic pressurizing mechanism (200) is switched to the third state and drives the deformation amount measuring mechanism (300) to release the self-locking, the reset amount measuring mechanism (400) is automatically driven to work to measure the reset amount of the sealing ring.

2. The compressive performance detection device for a high anti-deformation O-ring seal according to claim 1, characterized in that, The periodic pressurizing mechanism (200) comprises a pressurizing component (210) movably mounted on the mounting frame (130) and a driving component (220) mounted on the mounting frame (130) and drivingly connected to the pressurizing component (210).

3. The compressive performance testing device for a high anti-deformation O-ring according to claim 2, characterized in that, The pressurizing assembly (210) comprises a reciprocating push rod (210a) movably mounted on the mounting frame (130), a pressurizing plate (210b) located at the bottom of the reciprocating push rod (210a), and a first elastic member (210c) located on both sides of the reciprocating push rod (210a) and the top of which is connected to the top of the inner wall of the mounting frame (130).

4. The compressive property detection device for a high anti-deformation O-ring seal according to claim 3, characterized in that, The driving assembly (220) comprises a driving motor (220a) mounted on the top of the mounting frame (130) and a cam member (220b) having one end connected to the output end of the driving motor (220a) and the other end drivingly connected to the reciprocating push rod (210a); The cam member (220b) comprises a pressurizing portion (220b-1), a pressure-maintaining portion (220b-2) and a resetting portion (220b-3); The top of the reciprocating push rod (210a) is provided with an extrusion head (210a-1) corresponding to the cam member (220b).

5. The compressive performance testing device for a highly deformation-resistant O-ring seal according to claim 4, wherein The deformation variable measuring mechanism (300) comprises a deformation amplification component (310), a deformation scale plate (320), and a self-locking component (330) for locking the deformation amplification component (310).

6. The compressive performance detection device for a high anti-deformation O-ring seal according to claim 5, characterized in that, The deformation amplification component (310) comprises a connecting frame (310a) installed on the top of the support platform (100) and a lever component (310b) one end of which is hinged to the connecting frame (310a).

7. The compressive property detection device for a high anti-deformation O-ring seal according to claim 6, characterized in that, The lever assembly (310b) includes a connecting plate (310b-1) with one end hinged to the connecting frame (310a) and a second elastic member (310b-11) at the top, and an arc-shaped block (310b-2) located at the end of the connecting plate (310b-1) away from the connecting frame (310a) and having serrations on the outer side wall; The side wall of the reciprocating push rod (210a) has a pressing plate (210a-3) corresponding to the connecting plate (310b-1); The side wall of the connecting frame (310a) has a mounting block (310a-1) with the bottom connected to the other end of the second elastic member (310b-11); The top of the arc-shaped block (310b-2) has a first marking strip corresponding to the deformation dial (320); The self-locking assembly (330) is a ratchet engaging with the serrations on the side wall of the arc-shaped block (310b-2), and the ratchet is mounted on the side wall of a ratchet mounting seat located at the top of the support platform (100).

8. An anti-deformation O-ring compressive performance detection device according to claim 7, characterized in that, The reset amount detection mechanism includes a support frame (410) mounted on one side of the ratchet mounting seat, a reset scale plate (420) located at the top of the support frame (410), a gravity sliding block (430) movably mounted on the side wall of the reset scale plate (420), and a transmission assembly (440) with one end drivingly connected to the gravity sliding block (430) and the other end drivingly connected to the ratchet; 9. An anti-deformation O-ring compressive property detection device according to claim 8, characterized in that, The transmission assembly (440) includes a threaded cylinder (440a) mounted on one side of the ratchet mounting seat and connected to the side wall of the ratchet through a rotating shaft, a limiting frame (440b) mounted on one side of the ratchet mounting seat, and a threaded rod (440c) located inside the threaded cylinder (440a) and having a limiting sliding groove on the side wall. The inner wall of the limiting frame (440b) has a limiting protrusion corresponding to the limiting sliding groove; One end of the threaded rod (440c) away from the threaded cylinder (440a) has a limiting block (440c-1), and one side of the gravity sliding block (430) close to the limiting block (440c-1) is an inclined surface and corresponds to the limiting block (440c-1); The side wall of the gravity sliding block (430) has a second marking strip corresponding to the reset scale plate (420); A torsion spring is sleeved on the connecting shaft of the ratchet and the ratchet mounting seat.

10. The compressive performance detection device for a high anti-deformation O-ring seal according to claim 3, characterized in that, An adjusting assembly (210a-2) for adjusting the pre-tightening force of the first elastic member (210c) is provided on the reciprocating push rod (210a). The adjusting assembly (210a-2) includes a moving block (210a-21) slidably mounted on the reciprocating push rod (210a), a fixed block (210a-22) fixedly sleeved on the reciprocating push rod (210a), and an adjusting nut (210a-23) mounted on the moving block (210a-21) and the fixed block (210a-22); Wherein, the bottom of the first elastic member (210c) is connected to the top of the moving block (210a-21).

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