Friction performance testing device for sealing element

Abstract

The invention discloses a sealing element friction performance testing device, which comprises a working table, a pressure testing mechanism and a friction testing mechanism, and is characterized in that the working table is used for bearing a sealing element; the pressure testing mechanism comprises a pressure testing component which is distributed up and down with the workbench, and the pressure testing component provides a pressure load for the sealing element through height adjustment; the friction testing mechanism is connected to the workbench, and the friction testing mechanism is used for driving the workbench to move, so that the sealing element moves with tangential friction under the pressure load. The working table bears the sealing element, the sealing element is pressed under the clamping effect along with the downward pressing effect of the pressure testing component, the working table drives the sealing element to move, the sealing element bears tangential friction force under the combined effect of movement and pressure loads, workers can conveniently test the tangential friction performance of the sealing element, and the product quality of the sealing element is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of testing devices, and in particular to a sealing friction performance testing device. Background Art

[0002] Lip seal is a self-sealing seal that relies on the lip to be close to the surface of the sealing coupling to block the leakage channel and achieve the sealing effect. The working principle of the lip seal is to use the elastic deformation and interference of the lip to achieve sealing.

[0003] Lip seals are widely used in hydraulic, pneumatic, lubrication and other systems. Compared with extrusion seals such as O-rings, lip seals have better overall performance and longer service life in reciprocating sealing processes. After the lip seals are processed, in order to ensure product quality, the lip seals need to be tested for performance. However, most of the current lip seal test devices only test the sealing performance of the lip seals. In addition, some devices with friction performance tests can only test the axial friction of the lip seals, but cannot test the tangential friction of the lip seals. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a seal friction performance test device, which can automatically test the friction performance and other parameters of the lip seal ring.

[0005] According to the seal friction performance testing device of the first aspect embodiment of the present application, the seal friction performance testing device includes a workbench, a pressure testing mechanism and a friction testing mechanism, the workbench is used to support the seal; the pressure testing mechanism includes a pressure testing component distributed above and below the workbench, and the pressure testing component provides a pressure load for the seal by adjusting the height; the friction testing mechanism is connected to the workbench, and the friction testing mechanism is used to drive the workbench to move so that the seal moves with tangential friction under the pressure load.

[0006] The seal friction performance testing device according to the embodiment of the present application has at least the following beneficial effects: the workbench carries the seal, and as the pressure test component presses downward, the seal is compressed under the clamping action, and the workbench drives the seal to move. Under the combined action of movement and pressure load, the seal is subjected to tangential friction force, which makes it convenient for the staff to test the tangential friction performance of the seal and ensure the product quality of the seal.

[0007] According to some embodiments of the present application, the seal friction performance testing device further includes a support and guide mechanism, the support and guide mechanism includes a base, the base is used to place the workbench, and the friction testing mechanism is arranged on the base.

[0008] According to some embodiments of the present application, the friction testing mechanism includes a first drive assembly and a second drive assembly, wherein the first drive assembly and the second drive assembly are connected to opposite sides of the workbench to drive the workbench to reciprocate.

[0009] According to some embodiments of the present application, the first drive assembly includes a first hydraulic cylinder and a first piston rod connected to each other, and the second drive assembly includes a second hydraulic cylinder and a second piston rod connected to each other, and the first piston rod and the second piston rod are connected to opposite sides of the workbench.

[0010] According to some embodiments of the present application, the first piston rod extends out of the first hydraulic cylinder, and the second piston rod extends out of the second hydraulic cylinder, so that the workbench moves out of the range of the base; the first piston rod extends into the first hydraulic cylinder, and the second piston rod extends into the second hydraulic cylinder, so that the workbench moves into the range of the base.

[0011] According to some embodiments of the present application, the first piston rod extends out of the first hydraulic cylinder, and the second piston rod extends into the second hydraulic cylinder, so that the workbench moves out of the range of the base; the first piston rod extends into the first hydraulic cylinder, and the second piston rod extends out of the second hydraulic cylinder, so that the workbench moves into the range of the base.

[0012] According to some embodiments of the present application, the first hydraulic cylinder and the second hydraulic cylinder are connected to each other so that the oil inside the first hydraulic cylinder and the second hydraulic cylinder can be shared.

[0013] According to some embodiments of the present application, the base is provided with a bracket extending outward, the first hydraulic cylinder is fixedly connected to the bracket, the first piston rod is detachably connected to the workbench, and a first connecting component that can rotate horizontally is provided between the first piston rod and the workbench.

[0014] According to some embodiments of the present application, the second piston rod is detachably connected to the workbench, and a second vertically rotatable connecting component is provided between the second piston rod and the workbench.

[0015] According to some embodiments of the present application, the support and guide mechanism also includes a support seat, which is spaced apart from the base up and down and connected by a guide component, and the pressure testing component is located between the base and the support seat, and the pressure testing component adjusts its height along the guide component.

[0016] According to some embodiments of the present application, the pressure testing mechanism further includes a third driving assembly disposed on the support seat, and the third driving assembly is used to drive the pressure testing component to adjust its height.

[0017] According to some embodiments of the present application, the seal friction performance testing device also includes a driving mechanism, which is disposed on the support seat. The driving mechanism includes a control valve group, and the control valve group is used to control the movement process of the third driving component.

[0018] According to some embodiments of the present application, the seal friction performance testing device also includes a seal installation mechanism, which is arranged on the outside of the base, and the seal installation mechanism includes a slide rail. The workbench moves back and forth along the slide rail to move the workbench out of the range of the base or into the range of the base.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the technical solution disclosed in the present application and constitute a part of the specification. Together with the embodiments disclosed in the present application, they are used to explain the technical solution disclosed in the present application and do not constitute a limitation on the technical solution disclosed in the present application.

[0021] Figure 1 This is a schematic diagram of the front structure of a sealing friction performance testing device according to an embodiment of the present application;

[0022] Figure 2 This is a front view of a sealing friction performance testing device according to an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the rear structure of the sealing friction performance testing device according to an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of the pressure testing mechanism in the friction performance testing device for seals according to an embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the structure of the friction testing mechanism in the friction performance testing device for seals according to an embodiment of the present application;

[0026] Figure 6 It is a cross-sectional view of a friction testing mechanism in a sealing friction performance testing device according to the first embodiment of the present application;

[0027] Figure 7 A cross-sectional view of a friction testing mechanism in a sealing friction performance testing device according to a second embodiment of the present application;

[0028] Figure 8 This is the friction performance testing device of the seal in the embodiment of the present application Figure 4A partial enlarged view of part A;

[0029] Fig. 9 This is the friction performance testing device of the seal in the embodiment of the present application Figure 4 A partial enlarged view of part B;

[0030] Fig.10 This is a schematic diagram of the structure of the seal installation mechanism in the seal friction performance testing device of the embodiment of the present application;

[0031] Fig.11 This is a schematic diagram of the structure of the seal tooling in the seal friction performance testing device according to an embodiment of the present application.

[0032] Reference numerals:

[0033] Workbench 101; sealing tool 102;

[0034] Pressure testing mechanism 200; pressure testing component 201; third driving assembly 202;

[0035] Friction testing mechanism 300; first driving assembly 301; second driving assembly 302;

[0036] Support guide mechanism 400; base 401; bracket 402; first connecting assembly 403; second connecting assembly 404; support base 405; guide member 406; latch 407; ladder 408; protective net 409;

[0037] Control valve group 501; hydraulic oil tank 502; driver 503;

[0038] Sealing member installation mechanism 600; Slide rail 601. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0040] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0043] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, the embodiment of the present application provides a seal friction performance test device, which is used to test the tangential friction performance of the seal. Specifically, the seal involved in the present application is a lip seal. The seal friction performance test device includes a workbench 101, a pressure test mechanism 200 and a friction test mechanism 300.

[0045] Among them, the workbench 101 is used to carry the seal, and the pressure testing mechanism 200 is used to apply a pressure load to the seal, so as to test the pressure resistance of the seal. At the same time, applying a pressure load to the seal can also provide a basis for testing the tangential friction performance of the seal. The friction testing mechanism 300 is used to drive the workbench 101 to move, which is convenient for replacing the seal, the workbench 101 and the seal tooling 102 on the workbench 101. In addition, when the seal is under pressure load, the movement of the workbench 101 can simulate the process of the seal being subjected to tangential friction, which is convenient for testing the tangential friction performance of the seal.

[0046] In some examples, the workbench 101 is formed as a plate-like structure with a flat support surface, the seal fixture 102 can be fixedly mounted on the support surface of the workbench 101, and the seal is loaded on the seal fixture 102, so that the movement of the workbench 101 can drive the seal fixture 102 and the seal to move together. Specifically, the workbench 101 is kept in a horizontal state.

[0047] At the same time, if Figure 4 As shown, the pressure testing mechanism 200 includes a pressure testing component 201, and the pressure testing component 201 is distributed above and below the workbench 101. Specifically, the pressure testing component 201 is located on the top of the workbench 101. The pressure testing component 201 can move in the vertical direction. During the movement, the pressure testing component 201 approaches or moves away from the seal. When the pressure testing component 201 approaches the seal, the pressure testing component 201 gradually presses the seal, thereby providing a pressure load for the seal; when the pressure testing component 201 moves away from the seal, the seal is no longer affected by the pressure testing component 201, which facilitates the replacement of the seal.

[0048] Furthermore, the friction test mechanism 300 is connected to the workbench 101. Specifically, the friction test mechanism 300 is a driving mechanism and is used to drive the workbench 101 to move. When the seal is under pressure load, the seal is subjected to tangential friction as the workbench 101 moves, which is convenient for testing the friction performance of the seal; when the seal is under no pressure load, the workbench 101 moves freely, thereby shifting the position of the seal, which is convenient for replacing the seal.

[0049] In some examples, such as Figure 5 As shown, the seal friction performance test device also includes a support guide mechanism 400, which includes a base 401. The base 401 is fixed and is used to place a movable workbench 101, so that the base 401 and the workbench 101 can move relative to each other. It can be understood that the top surface of the workbench 101 is relatively flat, which facilitates the workbench 101 to be placed on the top of the base 401.

[0050] In some examples, the friction testing mechanism 300 includes a first drive assembly 301 and a second drive assembly 302, both of which output linear motion. The first drive assembly 301 and the second drive assembly 302 are connected to opposite sides of the workbench 101, and the first drive assembly 301 and the second drive assembly 302 jointly drive the workbench 101 to perform linear reciprocating motion.

[0051] It is understandable that when the seal is tested on the workbench 101 , the workbench 101 is within the range of the base 401 ; when the seal needs to be replaced, the workbench 101 is moved out of the range of the base 401 .

[0052] It is worth noting that if the workbench 101 is connected to a single drive assembly on only one side, the workbench 101 can also move back and forth in a straight line under the push and pull of the single drive assembly. The drive assembly can not only provide the workbench 101 with power for linear movement, but also can position the workbench 101 vertically to a certain extent. However, the side opposite to the position where the workbench 101 is connected to the drive assembly does not have such positioning in the vertical direction, which can easily cause the side opposite to the position where the workbench 101 is connected to the drive assembly to be lifted, affecting the test accuracy of the friction performance.

[0053] The first drive component 301 and the second drive component 302 of the present application are connected to the opposite sides of the workbench 101 to form two connection points. The first drive component 301 and the second drive component 302 can provide a certain vertical positioning for the workbench 101 at the two connection points, so that the workbench 101 is stabilized in a horizontal state, avoiding the situation where one side of the workbench 101 is lifted up, and improving the accuracy of the friction performance test.

[0054] In some examples, the first drive assembly 301 includes a first hydraulic cylinder and a first piston rod connected to each other, and the first piston rod is inside the first hydraulic cylinder. As the amount of hydraulic oil in the first hydraulic cylinder is adjusted, the first piston rod can slide in the first hydraulic cylinder and provide power for the workbench 101. It is understandable that several first drive assemblies 301 can be provided, and several second drive assemblies 302 can also be provided.

[0055] Similarly, the second drive assembly 302 includes a second hydraulic cylinder and a second piston rod connected to each other, and the second piston rod is inside the second hydraulic cylinder. As the amount of hydraulic oil in the second hydraulic cylinder is adjusted, the second piston rod can also slide in the second hydraulic cylinder and provide power for the workbench 101.

[0056] The positions of the first hydraulic cylinder and the second hydraulic cylinder are stable, and the first piston rod and the second piston rod are connected to opposite sides of the workbench 101 .

[0057] Specifically, the first drive assembly 301 and the second drive assembly 302 drive the workbench 101 to move back and forth in a straight line by pushing and pulling, and the thrust and pull provided by the two can be controlled, thereby assisting the workbench 101 to reduce wear and derailment caused by unbalanced torque. In addition, the first drive assembly 301 and the second drive assembly 302 have built-in sensors to collect and output data such as friction force, push and pull force, etc., making the performance test of the seal more stable and accurate.

[0058] In the first embodiment, if Figure 6As shown, the first hydraulic cylinder is fixedly connected to the outside of the workbench 101, and the first piston rod is connected to the side of the workbench 101 facing away from the moving-out direction; the second hydraulic cylinder is fixedly connected to the inside of the base 401 and is located at the bottom of the workbench 101, and the second piston rod is connected to the side of the workbench 101 facing the moving-out direction. That is, the first hydraulic cylinder and the workbench 101 are arranged in parallel, and the second hydraulic cylinder and the workbench 101 are arranged in a stacked manner.

[0059] The direction in which the first hydraulic cylinder pushes out the first piston rod is the same as the moving-out direction of the workbench 101, and the direction in which the second hydraulic cylinder pushes out the second piston rod is also the same as the moving-out direction of the workbench 101. The direction in which the first piston rod extends into the first hydraulic cylinder is the same as the moving-in direction of the workbench 101, and the direction in which the second piston rod extends into the second hydraulic cylinder is also the same as the moving-in direction of the workbench 101.

[0060] According to the working principle of the hydraulic cylinder, when the workbench 101 moves out of the range of the base 401, both the first hydraulic cylinder and the second hydraulic cylinder need to perform oil filling operation; when the workbench 101 moves into the range of the base 401, both the first hydraulic cylinder and the second hydraulic cylinder need to perform oil discharge operation. It is understandable that the first hydraulic cylinder and the second hydraulic cylinder need to be equipped with corresponding oil tanks.

[0061] In the second embodiment, if Figure 7 As shown, the first hydraulic cylinder is fixedly connected to the outside of the workbench 101, and the first piston rod is connected to the side of the workbench 101 facing away from the moving-out direction; the second hydraulic cylinder is fixedly connected to the outside of the workbench 101, and the second piston rod is connected to the side of the workbench 101 facing the moving-out direction. That is, the first hydraulic cylinder is arranged in parallel with the workbench 101, and the second hydraulic cylinder is also arranged in parallel with the workbench 101.

[0062] The direction in which the first hydraulic cylinder pushes out the first piston rod is the same as the moving-out direction of the workbench 101, and the direction in which the second piston rod extends into the second hydraulic cylinder is also the same as the moving-out direction of the workbench 101. The direction in which the first piston rod extends into the first hydraulic cylinder is the same as the moving-in direction of the workbench 101, and the direction in which the second hydraulic cylinder pushes out the second piston rod is also the same as the moving-in direction of the workbench 101.

[0063] According to the working principle of the hydraulic cylinder, when the workbench 101 moves out of the range of the base 401, the first hydraulic cylinder needs to perform an oil filling operation and the second hydraulic cylinder needs to perform an oil discharge operation; when the workbench 101 moves into the range of the base 401, the first hydraulic cylinder needs to perform an oil discharge operation and the second hydraulic cylinder needs to perform an oil filling operation. In addition, the oil filling and oil discharge operations of the first hydraulic cylinder and the second hydraulic cylinder are performed simultaneously.

[0064] In the second embodiment, the first hydraulic cylinder and the second hydraulic cylinder are connected to each other, and the oil inside the first hydraulic cylinder and the second hydraulic cylinder are shared. At this time, the first hydraulic cylinder and the second hydraulic cylinder do not need to be additionally equipped with an oil tank for storing hydraulic oil.

[0065] Specifically, during the reciprocating movement of the workbench 101, when the first drive assembly 301 pushes the workbench 101, the second drive assembly 302 pulls the workbench 101; when the first drive assembly 301 pulls the workbench 101, the second drive assembly 302 pushes the workbench 101. That is, the oil filling and oil discharge processes in the first hydraulic cylinder and the second hydraulic cylinder are carried out simultaneously. Since the first hydraulic cylinder and the second hydraulic cylinder are connected, the oil filling amount and the oil discharge amount between the two are equal, ensuring that the two move synchronously. Furthermore, in order to ensure the flow of hydraulic oil in the first hydraulic cylinder and the second hydraulic cylinder, it is only necessary to set an oil pump on the pipeline connecting the first hydraulic cylinder and the second hydraulic cylinder.

[0066] In some examples, such as Figure 8 As shown, the base 401 is provided with a bracket 402 extending outward, the first hydraulic cylinder is fixedly connected to the bracket 402, and the first piston rod is detachably connected to the workbench 101.

[0067] A first connecting assembly 403 is provided between the first piston rod and the workbench 101 . The first connecting assembly 403 ensures a detachable connection between the first piston rod and the workbench 101 on one hand, and a rotatable connection between the first piston rod and the workbench 101 on the other hand.

[0068] Specifically, a hinge is provided in the first connecting assembly 403, so as to ensure that the first piston rod and the workbench 101 can rotate relative to each other and be detachably connected. At the same time, the hinge in the first connecting assembly 403 can rotate in the horizontal direction.

[0069] In some examples, such as Fig. 9 As shown, the second piston rod is detachably connected to the workbench 101 , and a second connecting assembly 404 that can rotate vertically is provided between the second piston rod and the workbench 101 .

[0070] Specifically, a hinge is provided in the second connecting assembly 404, thereby ensuring that the second piston rod and the workbench 101 can rotate relative to each other and are detachably connected.

[0071] The workbench 101 extends a certain distance toward the bottom at the edge and is then connected to the second piston rod through the second connecting assembly 404 , so that the second connecting assembly 404 avoids the installation space of the workbench 101 , which is convenient for the installation of the sealing tool 102 .

[0072] It is understandable that the workbench 101 can be replaced, thereby improving the durability of the device. During the replacement process of the workbench 101, the first connecting component 403 and the second connecting component 404 are disassembled, and the workbench 101 can be separated from the device along the removal direction. It is understandable that the process of installing the workbench 101 is the reverse of the above process.

[0073] It is worth noting that the hinge of the second connecting assembly 404 can realize vertical rotation, which is convenient for disassembly and assembly of the second connecting assembly 404. At the same time, the hinge of the first connecting assembly 403 can realize horizontal rotation, which prevents the vertical relative movement between the workbench 101 and the first piston rod, and further prevents the workbench 101 from tilting on one side.

[0074] In some examples, such as Figure 1 As shown, the support and guide mechanism 400 further includes a support seat 405 , which is spaced apart from the base 401 in the upper and lower parts, and is located at the top of the base 401 .

[0075] Furthermore, the support seat 405 and the base 401 are connected via a guide component 406 , and a plurality of guide components 406 may be provided, and the guide component 406 is used as a movable slide rail 601 of the pressure test component 201 .

[0076] The pressure test component 201 is located between the base 401 and the support base 405, and the guide component 406 is formed as a guide rod. The pressure test component 201 is sleeved on the guide component 406, and the two are slidably connected, so that the pressure test component 201 adjusts its height along the guide component 406. Specifically, four guide components 406 are provided, distributed at the edge of the base 401 at an angle.

[0077] In some examples, the pressure testing mechanism 200 further includes a third driving assembly 202 , and the third driving assembly 202 also adopts a hydraulic driving method of a hydraulic cylinder and a piston rod.

[0078] Further, the third driving assembly 202 is fixedly disposed on the support seat 405. When the length of the third driving assembly 202 is large, the third driving assembly 202 can penetrate the support seat 405. The output end of the third driving assembly 202 extends to the bottom of the support seat 405 and is connected to the pressure test component 201, thereby driving the pressure test component 201 to adjust the height.

[0079] In some examples, the seal friction performance testing device further includes a driving mechanism, which is disposed on the support seat 405 and is located on the top of the support seat 405 .

[0080] The driving mechanism includes a control valve group 501, and the control valve group 501 is used to control the movement process of the third driving component 202. When the third driving component 202 is a hydraulic component, the control valve group 501 controls the oil injection and oil discharge process of the third driving component 202.

[0081] Furthermore, the driving mechanism further includes a driver 503 and a hydraulic oil tank 502. The driver 503 is electrically connected to the control valve group 501. The control valve group 501 is in communication with the hydraulic oil tank 502 and is also in communication with the third driving assembly 202. The driver 503 provides power to the control valve group 501 and other structures, and drives the control valve group 501 to perform the oil filling and oil discharge process of the third driving assembly 202.

[0082] The third driving assembly 202 contains hydraulic oil flowing from the hydraulic oil tank 502, thereby driving the pressure test component 201 to reciprocate along the guide component 406. The pressure provided by the third driving assembly 202 to the pressure test component 201 is controlled by the control valve group 501 and recorded and transmitted through the built-in sensor, so as to accurately obtain the specific working condition experimental conditions and data.

[0083] In some examples, such as Fig.10 As shown, the seal friction performance testing device further includes a seal installation mechanism 600 . The seal installation mechanism 600 is disposed on the outside of the base 401 . The seal installation mechanism 600 includes a slide rail 601 .

[0084] Furthermore, the height of the slide rail 601 is adapted to the height of the base 401 , so as to facilitate receiving the workbench 101 removed from the base 401 , and the raised portion on the slide rail 601 extends to the top of the base 401 .

[0085] A guide groove is provided at the bottom of the workbench 101 , and the guide groove and the raised portion are engaged with each other to form a sliding connection, thereby guiding the reciprocating linear movement of the workbench 101 .

[0086] It is understandable that a support rod and an adjustment seat are provided at the bottom of the slide rail 601, and the adjustment seat is placed on the bottom surface and supports the slide rail 601 through the support rod. Specifically, the adjustment seat is used to adjust the height of the slide rail 601.

[0087] In some examples, such as Fig.11 As shown, the workbench 101 is used to install a sealing tool 102 , and the sealing tool 102 is used to position the sealing member so as to keep the sealing member on the workbench 101 .

[0088] Furthermore, there is a positioning groove on the top of the sealing tool 102, and the seal is placed in the positioning groove. The sealing tool 102 cooperates with the pressure testing component 201 on the top to clamp the seal, thereby completing the closed positioning of the seal.

[0089] When the seal on the workbench 101 needs to be replaced, the device is started, the workbench 101 is pushed out by the friction test mechanism 300, and reaches the limit position along the slide rail 601. According to the required seal, a specific seal fixture 102 is installed on the workbench 101, and then the workbench 101 is pushed and pulled into the range of the base 401 through the friction test mechanism 300. In this application, the performance test of lip seals of different sizes and models can be completed by only disassembling and replacing seal fixtures 102 of different sizes, dimensions and models, which is simple, convenient and versatile.

[0090] In some examples, the support seat 405 is provided with a latch 407, and the pressure test component 201 is provided with a matching component extending upward, and when the pressure test component 201 is at a relatively high position, the interval between the pressure test component 201 and the support seat 405 is relatively small, so that the matching component can reach the position of the latch 407. The latch 407 is used to lock the matching component, so that the height of the pressure test component 201 is fixed, and the safety of the equipment and personnel when it is not started is ensured.

[0091] In some examples, the ladder 408 is fixedly disposed on the support guide mechanism 400 to facilitate maintenance personnel to inspect and repair, and the protective net 409 is fixedly disposed on both sides of the support guide mechanism 400 to prevent accidental contact or even injury to the workers during testing.

[0092] In the actual implementation process, the seal friction performance test device is provided with a driving mechanism, a support guide mechanism 400, a pressure test mechanism 200, a seal installation mechanism 600 and a friction test mechanism 300 that cooperate with each other, and a data acquisition system for detecting the normal hydraulic pressure, tangential push-pull force and friction force of the seal is provided on the pressure test mechanism 200 and the friction test mechanism 300. This data acquisition system can also test the reliability of the seal under front loading conditions and parallel relative motion conditions. The collected data includes friction, pressure, temperature, etc., which improves work efficiency, can meet various testing requirements, and has low cost.

[0093] During the test, it is first necessary to ensure that the hydraulic oil tank 502 reaches the working hydraulic oil volume and the driver 503 operates normally; after the preparation work is completed, the sealing performance of the seal when subjected to pressure load is tested, and the tensile force and friction force of the seal under the push and pull test of the friction testing mechanism 300 under pressure load are tested.

[0094] Among them, for the sealing test condition, after the sealing tool 102 and the sealing are installed on the workbench 101, the driving pin 407 releases the matching component, so that the pressure test component 201 can move downward along the guide component 406, and the third driving component 202 drives the pressure test component 201 to move downward according to the required experimental pressure and squeeze the sealing component. The pressure test component 201 adds a medium with a certain pressure and volume to the sealing component through the pressurization port. This medium is used to test the sealing performance of the sealing component. During this period, the pressure value of the third driving component 202 is recorded by the sensor.

[0095] Furthermore, for the tangential friction test condition of the seal in the sealed state, under the above-mentioned sealing test condition, the friction testing mechanism 300 is started so that the first drive component 301 and the second drive component 302 cooperate to drive the workbench 101 to move at a constant speed, and the friction force data and curve are recorded and output through the built-in sensor.

[0096] In some selectable embodiments, the function / operation mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the function / operation involved, the two boxes shown in succession can actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiment presented and described in the flow chart of the application is provided by way of example, for the purpose of providing a more comprehensive understanding of technology. The disclosed method is not limited to the operation and logic flow presented herein. Selectable embodiments are expected, wherein the order of various operations is changed and the sub-operation of a part described as a larger operation is performed independently.

[0097] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A sealing friction performance testing device, characterized in that: include: A workbench, the workbench is used to carry the sealing member; A pressure testing mechanism, the pressure testing mechanism comprising a pressure testing component distributed above and below the workbench, the pressure testing component providing a pressure load to the sealing member by adjusting its height; A friction testing mechanism is connected to the workbench and is used to drive the workbench to move so that the sealing component moves with tangential friction under pressure load.

2. The seal friction performance testing device according to claim 1, characterized in that: The sealing component friction performance testing device further comprises a supporting and guiding mechanism, wherein the supporting and guiding mechanism comprises a base, wherein the base is used for placing the workbench, and the friction testing mechanism is arranged on the base.

3. The seal friction performance testing device according to claim 2, characterized in that: The friction testing mechanism includes a first driving assembly and a second driving assembly, wherein the first driving assembly and the second driving assembly are connected to opposite sides of the workbench and are used to drive the workbench to reciprocate.

4. The seal friction performance testing device according to claim 3, characterized in that: The first driving assembly includes a first hydraulic cylinder and a first piston rod connected to each other, and the second driving assembly includes a second hydraulic cylinder and a second piston rod connected to each other, and the first piston rod and the second piston rod are connected to opposite sides of the workbench.

5. The seal friction performance testing device according to claim 4, characterized in that: The first piston rod extends out of the first hydraulic cylinder, and the second piston rod extends out of the second hydraulic cylinder, so that the workbench moves out of the range of the base; the first piston rod extends into the first hydraulic cylinder, and the second piston rod extends into the second hydraulic cylinder, so that the workbench moves into the range of the base.

6. The seal friction performance testing device according to claim 4, characterized in that: The first piston rod extends out of the first hydraulic cylinder, and the second piston rod extends into the second hydraulic cylinder, so that the workbench moves out of the range of the base; the first piston rod extends into the first hydraulic cylinder, and the second piston rod extends out of the second hydraulic cylinder, so that the workbench moves into the range of the base.

7. The seal friction performance testing device according to claim 6, characterized in that: The first hydraulic cylinder and the second hydraulic cylinder are communicated with each other so that the oil inside the first hydraulic cylinder and the second hydraulic cylinder can be shared.

8. The seal friction performance testing device according to claim 5 or 6, characterized in that: The base is provided with a bracket extending outward, the first hydraulic cylinder is fixedly connected to the bracket, the first piston rod is detachably connected to the workbench, and a first connecting component that can rotate horizontally is provided between the first piston rod and the workbench.

9. The seal friction performance testing device according to claim 5 or 6, characterized in that: The second piston rod is detachably connected to the workbench, and a second connecting component that can rotate vertically is arranged between the second piston rod and the workbench.

10. The seal friction performance testing device according to claim 2, characterized in that: The support and guide mechanism also includes a support seat, which is spaced apart from the base and connected via a guide component. The pressure test component is located between the base and the support seat, and the pressure test component adjusts its height along the guide component.

11. The seal friction performance testing device according to claim 10, characterized in that: The pressure testing mechanism also includes a third driving assembly disposed on the support seat, and the third driving assembly is used to drive the pressure testing component to adjust its height.

12. The seal friction performance testing device according to claim 11, characterized in that: The sealing component friction performance testing device further comprises a driving mechanism, wherein the driving mechanism is disposed on the supporting seat, and the driving mechanism comprises a control valve group, wherein the control valve group is used to control the movement process of the third driving component.

13. The seal friction performance testing device according to claim 5 or 6, characterized in that: The seal friction performance testing device also includes a seal installation mechanism, which is arranged on the outside of the base. The seal installation mechanism includes a slide rail, and the workbench moves back and forth along the slide rail to move the workbench out of the range of the base or into the range of the base.

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