A friction plate product level anti-slip performance torsion test device

Abstract

The application discloses a kind of friction plate product grade anti-sliding performance torsion test equipment, it is related to wind power generation technical field;Friction plate product grade anti-sliding performance torsion test equipment second clamping piece is rotatable relative to first clamping piece around vertical direction axis;Pressing device is used to apply vertical downward pressing force to second clamping piece;Loading device is used to apply push-pull force to second clamping piece;Detection device is used to detect the pressure information, push-pull force information and displacement information of second clamping piece;Data processing device is used for data processing according to received information.The friction plate product grade anti-sliding performance torsion test equipment provided by the application can be used to simulate the pressure and torsion force suffered by the to-be-tested product under actual use state, and the product application level performance parameters can be obtained to better guide the design optimization related to the to-be-tested product.

Description

A torsional testing device for the anti-slip performance of friction pads (product grade) Technical Field

[0001] This invention relates to the field of wind power generation technology, and more specifically, to a torsional testing device for the anti-slip performance of friction pads at the product level. Background Technology

[0002] In the field of wind power generation technology, the anti-slip performance of the mating surfaces of the wind turbine drive system directly determines the torque transmission capability. Abnormal slippage of the mating surfaces can adversely affect the normal operation of the unit. To increase the friction coefficient between the mating surfaces and thus improve the torque transmission capability of the joint, methods such as adding friction pads or modifying the surface quality are used to increase the friction coefficient between the mating surfaces. The anti-slip performance of the connecting surfaces of components in the wind turbine drive system is not only affected by a combination of factors such as materials, operating conditions, surface quality, contact conditions, and environmental conditions, but also by the complex loads experienced by the connecting surfaces of the two components, including vertical loads, horizontal loads, bending moments, and torques.

[0003] In related technologies, research on the friction-enhancing performance of adding friction pads is still at the laboratory stage, and it is impossible to test actual products. On the one hand, the anti-slip performance of the connection surface obtained by standard friction testing machines and testing methods is very different from that in actual applications, and usually cannot provide accurate guidance for design optimization in the R&D process. On the other hand, conducting full-scale testing of the fan drive system faces difficulties such as huge testing costs and long testing cycles.

[0004] Existing laboratory testing equipment cannot simulate the actual assembly state of friction pad products, cannot achieve product-level testing, and the measured data differs greatly from that in actual applications. Furthermore, the testing time is long and the cost is high.

[0005] In summary, how to provide a torsional testing device for the anti-slip performance of friction pads at the product level is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a torsional testing device for the anti-slip performance of friction pads at the product level, which can be used to simulate the torsional and pressure conditions experienced by friction pads in actual use, and to achieve torsional testing of the anti-slip performance of friction pads at the product level.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A torsional testing device for the anti-slip performance of friction pads at the product level, comprising:

[0009] Install base plate;

[0010] A first clamping member and a second clamping member are provided. The first clamping member is fixed to the mounting base plate. The second clamping member is rotatable relative to the first clamping member about a vertical axis and is located above the first clamping member. The product to be tested is located between the first clamping member and the second clamping member.

[0011] A clamping device is used to apply a vertically downward clamping force to the second clamping member to simulate the pressure experienced by the product under test during actual use, and to give the second clamping member only the degree of freedom to rotate about the vertical axis relative to the first clamping member.

[0012] A loading device is used to apply a push-pull force to the second clamping member to simulate the torque experienced by the product under test during actual use, and to make the second clamping member rotate relative to the first clamping member.

[0013] The detection device is used to detect the pressure information of the pressure on the second clamping member, the push-pull force information of the second clamping member, and the displacement information of the second clamping member relative to the first clamping member when rotating; and to transmit the pressure information, the push-pull force information, and the displacement information to the data processing device.

[0014] A data processing device is connected to the detection device, and the data processing device is used to process data based on the received pressure information, push-pull force information, and displacement information.

[0015] Optionally, the clamping device includes at least one clamping bolt for providing clamping force, the clamping bolt being used to simulate the pressure distribution when the product under test is actually used; the screw of the clamping bolt passes through the second clamping member and is threadedly connected to the first clamping member, and the nut of the clamping bolt is disposed at the portion of the screw that extends out of the second clamping member, with the lower surface of the nut facing the upper surface of the second clamping member.

[0016] Optionally, the clamping device includes a plurality of clamping bolts, the positions of which are used to simulate the pressure distribution experienced by the product under test in actual use.

[0017] Optionally, a pad is provided between the nut and the upper surface of the second clamping member, the pad is sleeved on the screw, and the height of the pad is different in different clamping bolts.

[0018] Optionally, the loading device includes:

[0019] A loader having a movable force-applying end, the loader being mounted on the first clamping member;

[0020] The load transfer assembly has one end connected to the force-applying end and the other end connected to the second clamping member, so as to apply a load to the second clamping member through the loader and cause the second clamping member to rotate relative to the first clamping member.

[0021] Optionally, the load transfer component includes:

[0022] A force transmission component is fixedly mounted on the second clamping component;

[0023] A connector, one end of which is connected to the force-applying end of the loader, and the other end of which is connected to the force-transmitting component;

[0024] A force-transmitting bolt passes through the second clamping member, with one end of the force-transmitting bolt connected to the force-transmitting member and the other end fixed to the second clamping member.

[0025] Optionally, the detection component includes:

[0026] A pressure detection element is disposed on the clamping device and is used to detect the pressure information applied by the clamping device to the second clamping member;

[0027] A push-pull force detection component is disposed on the load transmission assembly and is used to detect the push-pull force information applied by the loading device to the second clamping member;

[0028] A displacement detection element is disposed on the mounting base plate and is used to detect the displacement of the second clamping element relative to the first clamping element;

[0029] The pressure detection device, the push-pull force detection device, and the displacement detection device are all connected to the data processing device.

[0030] Optionally, the pressure detection element includes a pressure sensor and a first strain gauge disposed on the clamping device; the push-pull force detection element includes a push-pull force sensor and a second strain gauge disposed on the load transmission assembly; and the displacement detection element includes a displacement sensor.

[0031] The pressure sensor, the first strain gauge, the push-pull force sensor, the second strain gauge, and the displacement sensor are all connected to the data processing device.

[0032] Optionally, the mounting base plate is provided with a limiting member to prevent displacement of the first clamping member.

[0033] Optionally, it further includes a rotating shaft passing through the first clamping member and the second clamping member, wherein the first clamping member is provided with a first mounting hole, the second clamping member is provided with a second mounting hole, and the rotating shaft is disposed in the first mounting hole and the second mounting hole;

[0034] One end of the rotating shaft is fixed to the mounting base plate, and the other end extends out of the second clamping member. A bearing is sleeved on the outer periphery of the rotating shaft, and the outer ring of the bearing contacts the inner wall of the first mounting hole or the inner wall of the second mounting hole. The second clamping member is rotatable about the rotating shaft relative to the first clamping member.

[0035] In the process of using the friction pad product-grade anti-slip performance torsion testing equipment provided by this invention, the product to be tested is first placed between the first clamping member and the second clamping member, and the position of the second clamping member is adjusted and fixed. A vertically downward clamping force is applied to the second clamping member by a clamping device to simulate the pressure experienced by the product under test during actual use. A push-pull force is applied to the second clamping member by a loading device to simulate the torsional force experienced by the product under test during actual use, so that the second clamping member rotates relative to the first clamping member. During this process, the detection device detects the pressure information of the pressure applied to the second clamping member by the clamping device, the push-pull force information of the push-pull force applied to the second clamping member by the loading device, and the displacement information of the second clamping member, and transmits the pressure information, push-pull force information, and displacement information to the data processing device. The data processing device is used to process the received pressure information, push-pull force information, and displacement information, calculate the friction force experienced by the product under test, and obtain the product-grade performance parameters of the product under test.

[0036] The friction plate product-level anti-slip performance torsion testing equipment provided by this invention can be used to simulate the pressure and torque experienced by the product under actual use. The obtained product-level performance parameters of the product under test can provide data support for the design optimization of the wind turbine drive chain system and provide practical guidance for the design optimization of the wind turbine drive system. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0038] Figure 1 is a schematic diagram of the connection relationship of each part of the torsional testing equipment for the anti-slip performance of friction pads provided by the present invention.

[0039] Figure 2 is a top view schematic diagram of the torsional testing equipment for the anti-slip performance of friction pads provided by the present invention.

[0040] Figure 3 is a schematic diagram of the torsional testing equipment for the anti-slip performance of friction pads provided by the present invention.

[0041] Figure 4 is a cross-sectional schematic diagram of the friction plate product-grade anti-slip performance torsion testing equipment provided by the present invention.

[0042] In Figures 1-4:

[0043] 100 is a torsional testing device for the anti-slip performance of friction plates at the product level; 101 is the main body of the testing device; 102 is a loader; 103 is a testing device; 104 is a data processing device; and 105 is a hydraulic source.

[0044] 1 is the test fixture, 11 is the second clamping component, and 12 is the first clamping component;

[0045] 2 is the load transfer assembly, 21 is the force transmission bolt, 22 is the force transmission component, and 23 is the connecting component;

[0046] 3 is the mounting base plate, 31 is the base plate body, 32 is the anchor bolt, and 33 is the limiting component;

[0047] 4 is the pin assembly, 41 is the tightening bolt pair, 42 is the rotating shaft, 43 is the pressure plate, 44 is the fastening nut, 45 is the first sleeve, 46 is the second sleeve, and 47 is the bearing;

[0048] 5 is the clamping device, 51 is the clamping bolt, 52 is the pad, and 53 is the backing plate;

[0049] 6 represents the product to be tested;

[0050] 71 is a pressure sensor, 72 is the first strain gauge, and 73 is a displacement sensor. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] The core of this invention is to provide a torsional testing device for the anti-slip performance of friction pads at the product level. This device can be used to simulate the torsional and pressure conditions experienced by friction pads in actual use, thereby enabling torsional testing of the anti-slip performance of friction pads at the product level.

[0053] Please refer to Figures 1 to 4.

[0054] This specific embodiment discloses a torsional testing device 100 for the anti-slip performance of friction pads, comprising: a mounting base plate 3, a first clamping member 12, a second clamping member 11, a clamping device 5, a loading device, a testing device 103, and a data processing device 104; the first clamping member 12 is fixed to the mounting base plate 3, and the second clamping member 11 is rotatable relative to the first clamping member 12 about a vertical axis and is located above the first clamping member 12; the product to be tested 6 is located between the first clamping member 12 and the second clamping member 11; the clamping device 5 is used to apply a vertically downward clamping force to the second clamping member 11, simulating the pressure experienced by the product to be tested 6 during actual use, and ensuring that the second clamping member 11 only has a vertical clamping force relative to the first clamping member 12. The linear axis has a degree of freedom of rotation; the loading device is used to apply a push-pull force to the second clamping member 11 to simulate the torque experienced by the product under test 6 during actual use, and to make the second clamping member 11 rotate relative to the first clamping member 12; the detection device 103 is used to detect the pressure information of the pressure on the second clamping member 11, the push-pull force information of the second clamping member 11, and the displacement information of the second clamping member 11 when rotating relative to the first clamping member 12; and transmits the pressure information, push-pull force information, and displacement information to the data processing device 104; the data processing device 104 is connected to the detection device 103, and the data processing device 104 is used to perform data processing based on the received pressure information, push-pull force information, and displacement information.

[0055] It should be noted that the clamping device 5 mentioned in this specific embodiment can provide a vertically downward clamping force to the second clamping member 11 by raising and lowering the power component, or by tightening the screwing structure to provide a vertically downward clamping force to the second clamping member 11, or by increasing the weight of the weight set on the upper surface of the second clamping member 11 to provide a vertically downward clamping force, or other ways to increase the clamping force. The specific method is determined according to the actual situation and will not be elaborated here.

[0056] It should be noted that the surface quality of the working surfaces of the first clamping member 12 and the second clamping member 11 that are in contact with the product to be tested needs to be the same as the actual connection surface. Specifically, the machined surface includes indicators for evaluating surface quality such as surface roughness and flatness, and the thermally sprayed zinc surface includes indicators such as zinc layer thickness, in order to simulate the surface state of the connection surface of the two components in the fan transmission system.

[0057] The loading device in this specific embodiment is mainly used to provide a pushing or pulling force to the second clamping member 11. Specifically, it can be used to rotate the second clamping member 11 relative to the first clamping member 12 by providing a pulling force, or it can be used to rotate the second clamping member 11 relative to the first clamping member 12 by providing a pushing force, depending on the actual situation.

[0058] The loading device can be a combination of a push-pull cylinder and related transmission components to provide push-pull force, or a combination of a rotating motor and related transmission components, or as shown in Figure 1, the loading device includes a loader 102 and provides power to the loader 102 through a hydraulic source 105; of course, the loader 102 can also be powered by a cylinder, motor or other structure, depending on the actual situation, which will not be elaborated here.

[0059] In using the friction pad product-grade anti-slip performance torsion testing equipment 100 provided in this specific embodiment, the product to be tested 6 is first placed between the first clamping member 12 and the second clamping member 11. The upper surface of the first clamping member 12 and the lower surface of the second clamping member 11 are the working surfaces, and the position of the second clamping member 11 is adjusted and fixed. A vertically downward clamping force is applied to the second clamping member 11 by the clamping device 5 to simulate the pressure experienced by the product to be tested 6 during actual use. A pushing and pulling force is applied to the second clamping member 11 by the loading device to simulate the torsion experienced by the product to be tested 6 during actual use. The pressure is applied to the second clamping member 11 to rotate relative to the first clamping member 12. During this process, the detection device 103 detects the pressure information of the pressure applied to the second clamping member 11 by the clamping device 5, the push-pull force information of the push-pull force applied to the second clamping member 11 by the loading device, and the displacement information of the second clamping member 11. The pressure information, push-pull force information, and displacement information are transmitted to the data processing device 104. The data processing device 104 is used to perform data processing based on the received pressure information, push-pull force information, and displacement information, calculate the frictional force on the product under test 6, and obtain the product-level performance parameters of the product under test 6.

[0060] The product to be tested 6 mentioned in this specific embodiment can be a friction plate or other products that meet the requirements, depending on the actual situation.

[0061] Compared to existing technologies, the friction plate product-level anti-slip performance torsion testing equipment 100 provided in this specific embodiment can be used to simulate the pressure and torque experienced by the product under test 6 under actual use conditions, and can adjust the pressure and torque experienced by the product under test 6 according to actual conditions, so as to obtain the application-level performance parameters of the product under test 6 (that is, the performance parameters simulating the actual installed state), which can better guide the design optimization of the product under test 6; when the product under test 6 is a wind turbine related structure, it can be used to guide the design optimization of the wind turbine drive chain.

[0062] In one specific embodiment, the clamping device 5 includes at least one clamping bolt 51, the screw of the clamping bolt 51 passes through the second clamping member 11 and is threadedly connected to the first clamping member 12, and the nut of the clamping bolt 51 is disposed at the part of the screw that extends out of the second clamping member 11, and the lower surface of the nut faces the upper surface of the second clamping member 11.

[0063] In actual use, the number of clamping bolts 51 can be multiple, depending on the actual situation. When there are multiple clamping bolts 51, the positions of the multiple clamping bolts 51 are used to simulate the pressure distribution under the actual use state of the product under test 6, so that the clamping bolts 51 provide the second clamping member 11 with the pressure under the actual use state of the product under test 6. The distribution of clamping bolts 51 can be adjusted according to different usage scenarios.

[0064] When the product under test 6 is a component related to a wind turbine, the positions of the multiple clamping bolts in the clamping assembly 5 are based on the structural settings of the actual components related to the wind turbine transmission system, in order to simulate the connection status of the components related to the wind turbine transmission system.

[0065] In practical use, by tightening the nut, a vertically downward clamping force can be applied to the second clamping member 11, and by adjusting the tightening torque, the magnitude of the vertically downward pressure provided to the second clamping member 11 can be adjusted.

[0066] It should be noted that the clamping force of the clamping bolt 51 is adjustable. In actual use, the clamping force of the clamping bolt 51 can be adjusted according to the actual equipment being simulated.

[0067] As shown in Figure 4, a pad 53 is provided between the nut of the clamping bolt 51 and the second clamping member 11. The lower surface of the pad 53 contacts the upper surface of the second clamping member 11, which can make the clamping force provided by the clamping bolt 51 evenly distributed on the pad 53, and apply a vertically downward clamping force to the second clamping member 11 through the pad 53.

[0068] Preferably, when there are multiple clamping bolts 51, a spacer 52 can be provided between the nut of the clamping bolt 51 and the washer 53. The spacer 52 is sleeved on the screw, and the height of the spacer 52 is different in different clamping bolts 51, so that the nuts of multiple clamping bolts 51 are set at different heights and staggered in height, so as to provide sufficient space for tightening the nuts of the clamping bolts 51.

[0069] In one specific embodiment, the loading device includes a loader 102 and a load transfer component 2. The loader 102 has a movable force-applying end and is mounted on the first clamping member 12. The load transfer component 2 has one end connected to the force-applying end and the other end connected to the second clamping member 11, so as to apply a load to the second clamping member 11 through the loader 102 and cause the second clamping member 11 to rotate relative to the first clamping member 12.

[0070] The load transfer assembly 2 is used to connect the first clamping member 12 and the second clamping member 11, and to transfer the load applied by the loader 102 to the second clamping member 11. Specifically, as shown in FIG3, the load transfer assembly 2 may include: a force transmission member 22, which is fixed to the second clamping member 11; a connecting member 23, one end of which is connected to the force-applying end of the loader 102 and the other end of which is connected to the force transmission member 22; and a force transmission bolt 21, which passes through the second clamping member 11, with one end of the force transmission bolt 21 connected to the force transmission member 22 and the other end fixed to the second clamping member 11.

[0071] As shown in Figure 3, the force transmission component 22 is a block structure and is fixed to the second clamping component 11. The connecting component 23 is a screw structure. One end of the connecting component 23 is connected to the force application end of the loader 102, and the other end is connected to the force transmission component 22. One end of the force transmission bolt 21 is connected to the force transmission component 22, and the other end is fixed to the second clamping component 11. When a tensile force is applied to the force application end of the loader 102, the tensile force is transmitted to the force transmission component 22 through the connecting component 23. The force transmission component 22 transmits the load to the second clamping component 11 through the force transmission bolt 21, so as to drive the second clamping component 11 to rotate around the vertical axis.

[0072] In practical use, the loader 102 can be flexibly moved and the magnitude of the loading force can be changed according to the needs of different test conditions. When the loader 102 is driven by hydraulic pressure, the friction plate product-grade anti-slip performance torsion testing equipment 100 includes a hydraulic source 105. However, in this specific embodiment, the friction plate product-grade anti-slip performance torsion testing equipment 100 can not only be a hydraulically driven loader 102, but can also be composed of other devices that can provide loading force, such as an electric loader 102; the output load of the loader 102 can be achieved by changing the oil pressure of the hydraulic source 105.

[0073] Of course, the load transfer component 2 can also be in other structural forms. For example, the loader 102 can be fixed to the mounting base plate 3, and the loader 102 can provide a thrust perpendicular to the rotation axis of the first clamping member 12 to the second clamping member 11 so that the first clamping member 12 can rotate about the vertical axis. The force-applying end of the loader 102 can be directly connected to the second clamping member 11, or the load transfer component 2 can be set as a plate-shaped or rod-shaped structure connecting the force-applying end and the second clamping member 11. The power supply for the loader 102 can be a cylinder, a motor, etc., depending on the actual situation.

[0074] In one specific embodiment, the detection component includes: a pressure detection element disposed on the clamping device 5, used to detect the pressure information applied by the clamping device 5 to the second clamping member 11; a push-pull force detection element disposed on the load transmission component 2, used to detect the push-pull force information applied by the loading device to the second clamping member 11; and a displacement detection element disposed on the mounting base plate 3, used to detect the displacement of the second clamping member 11 relative to the first clamping member 12; the pressure detection element, the push-pull force detection element, and the displacement detection element are all connected to the data processing device 104.

[0075] Specifically, as shown in Figure 4, the pressure detection component includes a pressure sensor 71 and a first strain gauge 72 disposed on the clamping device 5. In actual use, the pressure sensor 71 is used to clamp the pressure applied by the bolt 51 to the second clamping member 11; the first strain gauge 72 is disposed on the screw of the clamping bolt 51 and is used to detect the deformation of the screw of the clamping bolt 51. The data processing device 104 can calculate the pressure on the second clamping member 11 based on the deformation of the screw of the clamping bolt 51. In the specific processing, when the pressure measured by the pressure sensor 71 and the deformation measured by the first strain gauge 72 are compared, the pressure is adjusted accordingly. When there is a difference between the pressure on the second clamping member 11 calculated by the variable, the average value of the pressure measured by the pressure sensor 71 and the pressure on the second clamping member 11 calculated based on the deformation measured by the first strain gauge 72 can be taken as the pressure on the second clamping member 11. When there are multiple clamping bolts 51, the pressure sensor 71 can be directly set at the position where the pressure plate 43 contacts the second clamping member 11, or the pressure sensor 71 can be set between the nut of each clamping bolt 51 and the pressure plate 43. The sum of the pressures measured by the pressure sensor 71 in each clamping bolt 51 is the pressure on the second clamping member 11.

[0076] It should be noted that the surface quality of the bonding of the clamping bolt 51 needs to meet the requirements of the strain sensor in order to measure the change of clamping force of the product under test 6 during the test.

[0077] Specifically, the push-pull force detection component can include a push-pull force sensor and a second strain gauge disposed on the load transfer assembly 2. In actual use, the push-pull force sensor can be disposed on the force application end of the loader 102, and the second strain gauge can be disposed on the load transfer assembly 2. In actual use, the push-pull force sensor can directly detect the push-pull force applied by the force application end of the loader 102. The second strain gauge is used to detect the deformation of the load transfer assembly 2 and transmits the deformation data to the data processing device 104. The data processing device 104 calculates the push-pull force on the second clamping member 11 based on the deformation value detected by the second strain gauge. When there is a difference between the push-pull force measured by the push-pull force sensor and the push-pull force on the second clamping member 11 calculated based on the deformation value detected by the second strain gauge, the average value of the push-pull force measured by the push-pull force sensor and the push-pull force on the second clamping member 11 calculated based on the deformation value detected by the second strain gauge can be used as the push-pull force on the second clamping member 11.

[0078] As shown in Figures 2 and 3, the displacement detection component includes a displacement sensor 73, which is fixed to the mounting base plate 3 and used to measure the displacement of the second clamping member 11 relative to the first clamping member 12. Specifically, the displacement sensor 73 can be a laser displacement sensor or other sensors that meet the requirements.

[0079] As shown in Figure 2, the mounting base plate 3 is provided with limiting members 33 to prevent displacement of the first clamping member 12. Specifically, limiting members 33 can be provided at both ends of the first clamping member 12 to limit the displacement of the first clamping member 12.

[0080] As shown in Figure 3, the mounting base plate 3 includes a base plate body 31, which is fixed to the ground by anchor bolts 32 so that the base plate body 31 is completely fixed during the test. The limiting block is fixed to the upper surface of the base plate body 31 to limit and fix the first clamping member 12.

[0081] In one specific embodiment, the friction pad product-grade anti-slip performance torsion testing equipment 100 further includes a rotating shaft 42 passing through the first clamping member 12 and the second clamping member 11. The first clamping member 12 is provided with a first mounting hole, and the second clamping member 11 is provided with a second mounting hole. The rotating shaft 42 is disposed in the first mounting hole and the second mounting hole. One end of the rotating shaft 42 is fixed to the mounting base plate 3, and the other end extends out of the second clamping member 11. A bearing 47 is sleeved on the outer periphery of the rotating shaft 42, and the outer ring of the bearing 47 contacts the inner sidewall of the first mounting hole or the inner sidewall of the second mounting hole. The second clamping member 11 is rotatable about the rotating shaft 42 relative to the first clamping member 12.

[0082] It should be noted that the pin assembly 4 is mainly used to constrain the degree of freedom of the second clamping member 11, so that it can only rotate around the rotating shaft 42 and translate along the axial direction of the rotating shaft 42. The first mounting hole on the first clamping member 12, the second mounting hole on the second clamping member 11 and the rotating shaft 42 must maintain sufficient coaxiality. The axial direction of the rotating shaft 42 and the base plate body 31 must maintain sufficient perpendicularity to ensure the accuracy of the movement direction of the second clamping member 11 and the load transmission direction of the loader 102.

[0083] As shown in Figure 3, the pin assembly 4 includes two connecting rods. A pressure plate 43 is mounted on the upper end of each connecting rod. The pressure plate 43 is positioned below the tightening bolt assembly 41 and is fitted onto the outer circumference of the rotating shaft 42, pressing against the upper part of the fastening nut 44. The height of the pressure plate 43 can be adjusted by tightening the tightening bolt assembly 41, thus securing the rotating shaft 42. The lower end of the rotating shaft 42 is tightened to the base plate by fastening screws. The bearing 47 adjusts the angular deviation between the two axes during rotation and can also withstand a certain axial force to avoid the danger of the second clamping member 11 overturning during experimental misoperation, ensuring the safety of the experimental process. Additionally, the fastening nut 44 applies pressure to the bearing 47 to eliminate clearance, the first sleeve 45 adjusts the bearing 47 spacing and presses the inner and outer rings of the bearing 47, and the second sleeve 46 adjusts the height and separates the movement of the second clamping member 11 and the first clamping member 12.

[0084] In one specific embodiment, as shown in FIG3, the test fixture 1 includes a first clamping member 12, a second clamping member 11, a mounting base plate 3, and a load transfer assembly 2. The first clamping member 12 is fixed to the mounting base plate 3, and the load transfer assembly 2 is used to transfer the force of the force-applying end of the loader 102 to the second clamping member 11.

[0085] As shown in Figure 1, the friction plate product-grade anti-slip performance torsional testing equipment 100 includes a testing equipment body 101, a data processing device 104, and a hydraulic source 105. The testing equipment body 101 includes the testing fixture 1 shown in Figure 3, a loader 102, and a detection device 103. The hydraulic source 105 provides power to the loader 102. The detection device 103 is used to detect the pressure information of the pressure on the second clamping member 11, the push-pull force information of the push-pull force on the second clamping member 11, and the displacement information of the second clamping member 11 relative to the first clamping member 12 when rotating. The pressure information, push-pull force information, and displacement information are transmitted to the data processing device 104. The data processing device 104 is used to process the received pressure information, push-pull force information, and displacement information to obtain the product-grade anti-slip performance of the product under test 6 and ensure the test effect.

[0086] The terms "first" and "second" in the first clamping member 12 and the second clamping member 11, the first sleeve 45 and the second sleeve 46 mentioned in this application are only for distinguishing different positions and do not indicate any order.

[0087] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this invention is within the scope of protection of this invention and will not be elaborated upon here.

[0088] The torsional testing equipment 100 for the anti-slip performance of friction pads provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A torsional testing device for the anti-slip performance of friction pads at the product level, characterized in that, include: Mounting base plate (3); first clamping member (12) and second clamping member (11), the first clamping member (12) is fixed to the mounting base plate (3), the second clamping member (11) is rotatable about a vertical axis relative to the first clamping member (12) and is located above the first clamping member (12); the product to be tested (6) is located between the first clamping member (12) and the second clamping member (11); a clamping device (5) is used to apply a vertically downward clamping force to the second clamping member (11) to simulate the pressure experienced by the product to be tested (6) during actual use, and to make the second clamping member (11) relative to the first clamping member (12) rotate about a vertical axis and be located above the first clamping member (12); the product to be tested (6) is located between the first clamping member (12) and the second clamping member (11); a clamping device (5) is used to apply a vertically downward clamping force to the second clamping member (11) to simulate the pressure experienced by the product to be tested (6) during actual use, and to make the second clamping member (11) rotate about a vertical axis relative to the first clamping member (12) and be located above the second ... The first clamping member (12) has only one degree of freedom to rotate about a vertical axis; the clamping device (5) includes at least one clamping bolt (51) for providing clamping force, the screw of the clamping bolt (51) passes through the second clamping member (11) and is threadedly connected to the first clamping member (12), the nut of the clamping bolt (51) is disposed at the part of the screw that extends out of the second clamping member (11), and the lower surface of the nut faces the upper surface of the second clamping member (11); a loading device is used to apply a push-pull force to the second clamping member (11) to simulate the actual use of the product under test (6). The loading device includes a loader (102) and a load transfer assembly (2). The loader (102) has a movable force-applying end and is mounted on the first clamping member (12). One end of the load transfer assembly (2) is connected to the force-applying end, and the other end is connected to the second clamping member (11) to apply a load to the second clamping member (11) through the loader (102) and cause the second clamping member (11) to rotate relative to the first clamping member (12). The measuring device (103) is used to detect the pressure information of the pressure on the second clamping member (11), the push-pull force information of the second clamping member (11), and the displacement information of the second clamping member (11) when rotating relative to the first clamping member (12); and transmits the pressure information, the push-pull force information and the displacement information to the data processing device (104); the data processing device (104) is connected to the measuring device (103), and the data processing device (104) is used to perform data processing based on the received pressure information, the push-pull force information and the displacement information.

2. The torsional testing equipment for the anti-slip performance of friction pads according to claim 1, characterized in that, The clamping device (5) includes multiple clamping bolts (51), and the positions of the multiple clamping bolts (51) are used to simulate the pressure distribution under the actual use of the product under test (6).

3. The torsional testing equipment for the anti-slip performance of friction pads according to claim 2, characterized in that, A pad (52) is provided between the nut and the upper surface of the second clamping member (11). The pad (52) is sleeved on the screw, and the height of the pad (52) is different in different clamping bolts (51).

4. The torsional testing equipment for the anti-slip performance of friction pads according to claim 1, characterized in that, The load transfer assembly (2) includes: a force transmission member (22) fixedly disposed on the second clamping member (11); a connecting member (23) having one end connected to the force application end of the loader (102) and the other end connected to the force transmission member (22); and a force transmission bolt (21) passing through the second clamping member (11), with one end of the force transmission bolt (21) connected to the force transmission member (22) and the other end fixedly disposed on the second clamping member (11).

5. The torsional testing equipment for the anti-slip performance of friction pads according to claim 1, characterized in that, The detection device includes: a pressure detection element disposed on the clamping device (5) for detecting the pressure information applied by the clamping device (5) to the second clamping member (11); a push-pull force detection element disposed on the load transmission assembly (2) for detecting the push-pull force information applied by the loading device to the second clamping member (11); and a displacement detection element disposed on the mounting base plate (3) for detecting the displacement of the second clamping member (11) relative to the first clamping member (12); the pressure detection element, the push-pull force detection element, and the displacement detection element are all connected to the data processing device (104).

6. The torsional testing equipment for the anti-slip performance of friction pads according to claim 5, characterized in that, The pressure detection device includes a pressure sensor (71) and a first strain gauge (72) disposed on the clamping device (5); the push-pull force detection device includes a push-pull force sensor and a second strain gauge disposed on the load transfer assembly (2); the displacement detection device includes a displacement sensor (73); the pressure sensor (71), the first strain gauge (72), the push-pull force sensor, the second strain gauge and the displacement sensor (73) are all connected to the data processing device (104).

7. The torsional testing equipment for the anti-slip performance of friction pads according to any one of claims 1-3, characterized in that, The mounting base plate (3) is provided with a limiting member (33) to prevent the first clamping member (12) from shifting.

8. The torsional testing equipment for the anti-slip performance of friction pads according to any one of claims 1-3, characterized in that, It also includes a rotating shaft (42) that passes through the first clamping member (12) and the second clamping member (11). The first clamping member (12) is provided with a first mounting hole, and the second clamping member (11) is provided with a second mounting hole. The rotating shaft (42) is disposed in the first mounting hole and the second mounting hole. One end of the rotating shaft (42) is fixed to the mounting base plate (3), and the other end extends out of the second clamping member (11). A bearing (47) is sleeved on the outer periphery of the rotating shaft (42). The outer ring of the bearing (47) contacts the inner sidewall of the first mounting hole or the inner sidewall of the second mounting hole. The second clamping member (11) is rotatable relative to the first clamping member (12) around the rotating shaft (42).

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