Transient high-speed high-pressure friction and wear experimental device

Abstract

The application discloses a kind of transient high-speed high-pressure friction and wear experimental device, belongs to the technical field of friction and wear test.It includes rack, energy storage mechanism, power device, machine structure and friction testing device;The power device, energy storage mechanism and friction testing device are installed on the rack from left to right, the power device drives energy storage mechanism, the machine structure is installed on the rack at the compression of energy storage mechanism, the top rod of energy storage mechanism is opposite the center part of the pipe mouth of friction testing device, and the sensor assembly of friction testing device is respectively installed in friction testing device and on the rack.The application controls the interference between friction pin sample and friction cylinder sample to control friction pressure;Key parameters such as friction pressure, speed, friction force in the whole process of friction are measured, and the application has the advantages of simple structure, large energy storage of power source, convenient testing, and can realize instantaneous high-speed high-pressure friction and wear at the same time in the experimental process.

Description

Technical Field

[0001] This invention pertains to friction and wear testing technology, specifically relating to a transient high-speed high-pressure friction and wear experimental device. Background Technology

[0002] Friction is a widespread phenomenon in daily production and life. The friction process inevitably involves energy loss and the loss or migration of materials on the friction surface, resulting in wear. Wear is one of the main causes of mechanical equipment failure. Transient high-speed and high-pressure friction and wear refers to friction speeds exceeding 20 meters per second, friction pressures exceeding 100 MPa to near the material's yield strength, and friction times on the order of milliseconds. With the development of production and technological progress, the demand for high-speed, heavy-load mechanical equipment is increasing, and friction and wear problems are becoming more and more serious. They are widely found in aerospace, shipbuilding, weaponry, high-speed trains, and grinding processing, where friction and wear problems are particularly prominent.

[0003] Friction and wear testing is the most direct and effective means of studying friction and wear problems. Its purpose is to simulate actual working conditions, analyze the influence of various factors on friction and wear performance, optimize design parameters according to requirements, and evaluate design, material selection, surface treatment, and other solutions. Although existing pin-disc friction and wear testing equipment can achieve high-speed friction, the equipment is complex and large in size. Limited by motor power, when the linear velocity is tens of meters per second, the friction pressure can only reach a few megapascals to tens of megapascals, making it difficult to simultaneously achieve high-speed and high-pressure friction and unable to simulate the actual transient high-speed and high-pressure friction and wear environment. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a transient high-speed high-pressure friction and wear test device, which can solve the problem that the existing friction and wear test equipment is complicated and cannot simultaneously achieve high-speed and high-pressure friction and wear.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solution, which includes a frame, an energy storage mechanism, a power unit, a fastening structure, and a friction testing device. The power unit, the energy storage mechanism, and the friction testing device are mounted on the frame from left to right. The power unit drives the energy storage mechanism. The fastening structure is installed on the frame at the compression point of the energy storage mechanism. The top rod of the energy storage mechanism is directly opposite the center of the nozzle of the friction testing device. The sensor components of the friction testing device are respectively installed inside the friction testing device and on the frame.

[0006] The principle of the transient high-speed high-pressure friction and wear test of this invention is:

[0007] The friction pin sample is mounted on the top rod of the energy storage mechanism, and the friction cylinder sample is placed inside the friction testing device. The outer diameter of the friction pin sample is larger than the inner diameter of the friction cylinder sample. By controlling the interference fit between the two, the friction pressure is controlled to achieve high-pressure friction. Before the test, the power unit drives the energy storage mechanism to retract, and the locking mechanism locks the energy storage mechanism. When the locking mechanism unlocks, the energy storage mechanism drives the friction pin sample to achieve an instantaneous high-speed movement to the position of the friction cylinder sample and then quickly squeezes into the friction cylinder sample, so that the outer cylindrical surface of the friction pin sample rubs against the inner cylindrical surface of the friction cylinder sample. The corresponding sensor components measure the friction pressure, friction force, and friction speed.

[0008] The technical effects of this invention are:

[0009] 1. The energy storage mechanism is slowly driven by the power device to store energy, and the stored energy is released transiently to provide power for the friction and wear test process. The power source has a simple structure and large energy storage capacity, which avoids the difficulty of reaching the maximum speed and pressure at the same time due to the limitation of motor power in the high-speed and high-pressure friction process.

[0010] 2. The friction pressure can be controlled by adjusting the interference fit between the friction pin sample and the friction cylinder sample. The friction pressure adjustment is convenient, and a large friction pressure can be achieved during the friction and wear test.

[0011] 3. The buckle structure utilizes the lever principle to achieve the transient release of the pre-pressure of the energy storage mechanism. The structure is convenient, and through the load transfer path of the buckle structure, the release force of the buckle structure is ultimately greatly reduced.

[0012] 4. Frictional force is directly measured by force sensor components, frictional pressure is obtained by combining circumferential strain testing of friction cylinder samples with thick-walled cylinder theory, and frictional velocity is obtained by measuring the differential displacement during the friction process using a laser displacement sensor. The testing method is simple and can obtain key parameters such as pressure, velocity, frictional force, and friction coefficient throughout the entire friction process.

[0013] 5. Different friction speeds can be obtained by adjusting the spring stiffness, compression stroke, and mass of the impact block at the front end of the energy storage mechanism. The speed range is large and the adjustment is convenient, making it easy to obtain a large friction speed. Attached Figure Description

[0014] The accompanying drawings of this invention are described below:

[0015] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A sectional view;

[0017] Figure 3 This is a structural diagram of the buckle mechanism;

[0018] Figure 4 Diagram showing the interlocking state of the latching mechanism;

[0019] Figure 5 Diagram showing the unlocked state of the latching mechanism;

[0020] Figure 6 This is a schematic diagram of a strain gauge mounted on the outer circumferential surface of a friction cylinder sample.

[0021] In the diagram, 1 is the frame; 11 is the base; 12 is the main body of the frame; and 13 is the rubber block.

[0022] 2. Energy storage mechanism; 21. Impact block; 22. Pad block; 23. Spring; 24. Spindle;

[0023] 3. Power unit; 31. Power source; 32. Drive rod;

[0024] 4. Fastening mechanism; 41. Baffle; 410. Baffle return torsion spring; 42. Hook; 43. Trigger; 44. Front electromagnet; 45. Rear electromagnet; 46. Trigger return torsion spring; 47. Baffle shaft; 48. Hook shaft; 49. Pulley;

[0025] 5. Friction testing device; 51. Cylindrical sample holder; 52. Force sensor; 53. Laser displacement sensor; 54. Strain gauge;

[0026] 6. Screws; 7. Friction pin specimens; 8. Friction cylinder specimens. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] To clearly describe the invention, this patent application uses the directional terms "front," "rear," "left," and "right." "Front" refers to the direction of movement of the impact block when the latching mechanism is unlocked. "Left" and "right" are determined based on the arrangement of the above figures. If the actual use direction of the invention changes, the terminology of the orientation will change accordingly, and this should not be regarded as a limitation on the scope of patent protection.

[0029] like Figure 1 and Figure 2 As shown, this embodiment includes a frame 1, an energy storage mechanism 2, a power unit 3, a fastening structure 4, and a friction testing device 5. The power unit 3, the energy storage mechanism 2, and the friction testing device 5 are mounted on the frame 1 from left to right. The power unit 3 is connected to the energy storage mechanism 2 and drives the energy storage mechanism 2. The fastening structure 4 is installed on the frame 1 at the compression point of the energy storage mechanism 2. The top rod of the energy storage mechanism 2 is directly opposite the center of the nozzle of the friction testing device 5. The sensor components of the friction testing device 5 are respectively installed inside the friction testing device 5 and on the frame 1.

[0030] The operation process of this invention is as follows:

[0031] Friction pin sample 7 is mounted on the top rod of energy storage mechanism 2, and friction cylinder sample 8 is placed inside friction testing device 5. The outer diameter of friction pin sample 7 is larger than the inner diameter of friction cylinder sample 8. By controlling the interference fit between the two, the friction pressure is controlled to achieve high-pressure friction. Before testing, power device 3 drives energy storage mechanism 2 to retract, and locking mechanism 4 locks energy storage mechanism 2. When locking mechanism 4 unlocks, energy storage mechanism 2 drives friction pin sample 7 to the position of friction cylinder sample 8 and then quickly squeezes into friction cylinder sample 8, so that the outer cylindrical surface of friction pin sample 7 rubs against the inner cylindrical surface of friction cylinder sample 8. Each sensor component measures the friction pressure, friction force, and friction speed accordingly.

[0032] The frame 1 includes a base 11, a frame body 12, and a rubber block 13. The frame body 12 is fixed in the middle of the base 11. A power unit 3 bracket is installed on the base 11 on the left side of the frame body 12, and a friction testing device 5 bracket is installed on the base 11 on the right side of the frame body 12. The frame body 12 includes two plate-shaped pillars on the left and right and a horizontal plate connecting the two plate-shaped pillars. An energy storage mechanism 2 is fixedly installed between the two plate-shaped pillars of the frame body 12. The rubber block 13 is attached to the inner side of the plate-shaped pillar on the right side of the frame body 12 to absorb the remaining energy of the energy storage mechanism 2 after the friction between the friction pin sample 7 and the friction cylinder sample 8 is completed.

[0033] The power unit 3 includes a power source 31 and a drive rod 32. As an example, the power source 31 is a hydraulic cylinder, and the drive rod 32 is a piston rod connected to a hydraulic piston.

[0034] In another embodiment, the power source 31 of the power device 3 is an electric motor, and the drive rod 32 is an electric push rod driven by the electric motor. For the specific structure, please refer to Chinese patent document CN215186261 U.

[0035] The energy storage mechanism 2 includes an impact block 21, a pad block 22, a spring 23, and a spindle 24. The impact block 21 is a movable block with a hole and slot on the protrusion at the center of its left side that mates with the drive rod 32, and a push rod extending forward from the center of its right side. The impact block has through holes around the spindle 24. The spindle 24 is horizontally fixed between two plate-shaped supports of the frame body 12. In this embodiment, four horizontal spindles 24 are installed. The spring 23 is fitted onto the spindle 24 and is clamped between the left plate-shaped support surface of the frame body 12 and the impact block 23. The drive rod 32 of the power device 3 is connected to the hole and slot of the protrusion at the center of the impact block 21, and the push rod of the impact block 21 passes through the right plate-shaped support of the frame body 12 and faces the opening of the friction testing device 5.

[0036] The power unit 3 drives the impact block 21 to reciprocate along the axial direction via the drive rod 32; when the drive rod 32 pulls the impact block 21 backward to compress the spring 23 to the position of the two symmetrically arranged latching structures 4, the latching structures 4 lock and lock the front end face of the impact block 21.

[0037] As an embodiment of the connection between the drive rod and the impact block, the front end of the drive rod 32 is a T-shaped end face. The large diameter of the T-shaped end face of the drive rod 32 is smaller than the diameter of the hole in the center of the impact block 21. After two horizontally slotted pads 22 are placed on the T-shaped end face of the drive rod, the drive rod 32 pulls the impact block 21 backward through the pads 22 to compress the spring 23. There is still a gap between the T-shaped end face of the drive rod and the bottom surface of the impact block's hole. After the energy storage mechanism 2 is locked by the locking structure 4, the pads 22 can be manually removed along the slot. After the pads are removed, the drive rod 32 is disengaged from the impact block 21, and the load pulled by the energy storage mechanism 2 is unloaded during the friction experiment.

[0038] like Figure 3 As shown, the latching structure 4 includes: a baffle 41, a hook 42, a trigger 43, a front electromagnet 44, a rear electromagnet 45, a baffle return torsion spring 410, a trigger return torsion spring 46, a baffle shaft 47, a hook shaft 48, and a pin 49; the baffle 41 and the trigger 43 are mounted on the left side opening of the horizontal plate or bottom plate of the frame body 12 via the baffle shaft 47; the baffle 41 is a triangular plate, with the baffle shaft 47 passing through the right angle of the baffle; the trigger 43 is a strip-shaped block, with a swing end and a shaft end, the shaft end of the trigger 43 being threaded through the gap section of the baffle shaft 47, and the trigger 43 and the baffle 41... 1. Located on the opposite side of the baffle shaft; baffle return torsion spring 410 is sleeved on the baffle 41 mounting side of the baffle shaft 47, with both ends fixed to the baffle 41 and the frame body 12 respectively; trigger return torsion spring 46 is sleeved on the trigger 43 mounting side of the baffle shaft 47, with both ends fixed to the trigger 43 and the frame body 12 respectively; front electromagnet 44 is installed on the frame body 12 at the locked position of the trigger 43, with the front of the swing end of the trigger 43 attached to the front electromagnet 44; rear electromagnet 45 is installed on the frame body 12 at the unlocked position of the trigger 43, with the back of the swing end of the trigger 43 attached to the rear electromagnet 45.

[0039] A pin 49 parallel to the baffle shaft 47 is provided on the side of the baffle 41 near the trigger 43 at the short acute angle; a hook shaft 48 is installed parallel to the baffle shaft 47 on the right side of the opening of the horizontal plate or bottom plate of the frame body 12, and a hook 42 is installed on the hook shaft 48. The free end of the hook 42 has a fork that cooperates with the pin 49. The outer wall of the fork can be inserted into or removed from the notch at the end of the trigger 43 shaft handle.

[0040] The operation process of the buckle structure 4 is as follows:

[0041] At the start of the experiment, the latching structure 4 is in the unlocked state, the locking surface of the baffle 41 turns to the horizontal, and the drive rod 32 pulls the impact block 21 backward to the end of the locking surface of the baffle 41 of the latching structure 4, and the latching structure performs the locking function.

[0042] Figure 4 The diagram shows the locked state of the latching structure 4. The baffle 41 blocks the front end of the impact block 21. Under the preload of the spring 23, the impact block 3 tends to move forward, causing the baffle 41 to tend to rotate counterclockwise around the baffle axis 47. The pin 49 on the baffle 41 engages in the fork of the hook 42, causing the hook 42 to tend to rotate clockwise around the hook axis 48. The outer wall of the fork of the hook 42 engages in the recess at the end of the trigger 43 shaft, causing the trigger 43 to tend to rotate counterclockwise around the baffle axis 47. Because the front electromagnet 44 provides tension to prevent the trigger 43 from rotating counterclockwise, the latching structure 4 is in the locked state, and the impact block 21 cannot move forward. After locking, the latching structure 4 holds the impact block 21, and the spring 23 stores energy. The compression reaction force of spring 23 is entirely borne by the buckle structure 4. At this time, the drive rod 32 and the impact block 21 are not under load. The power source 31 drives the drive rod 32 to move forward until the drive rod 32 and the end face of the pad 22 are no longer in contact. The pad 22 is then manually pulled out. The drive rod 32 and the impact block 21 are no longer connected.

[0043] When unlocking, the front electromagnet 44 is de-energized, the attraction preventing the trigger 43 from rotating disappears, the baffle 41 rotates counterclockwise around the baffle axis 47, the hook 42 rotates clockwise around the hook axis 48, the trigger 43 rotates counterclockwise around the baffle axis 47, and the trigger reset torsion spring 46 and the baffle reset torsion spring 410 respectively store force; when the locking surface of the baffle 41 changes from vertical to horizontal, the impact block 21 accelerates forward rapidly under the pre-compression of the spring 23;

[0044] Unlocked state of the device Figure 5 As shown, the restoring force of the trigger return torsion spring 46 makes the trigger 43 tend to return to the locked state, and the restoring force of the baffle return torsion spring 410 makes the baffle 41 tend to return to the locked state. However, the baffle 41 is always blocked by the tail block of the impact block 21 during the unlocking process, while the trigger 43 is pulled by the rear electromagnet 45 and kept in a fixed position. The hook 42 is tightly fitted with the hook shaft 48. When the hook 42 rotates clockwise around the hook shaft 48, it stops at the deflection position due to frictional resistance.

[0045] After the latching structure 4 is unlocked, the impact block 21 accelerates rapidly under the preload of the spring 23, converting the elastic potential energy of the spring 23 into the kinetic energy of the impact block 21, so that the impact block 21 moves to the free length position of the spring with a high instantaneous speed; different instantaneous speeds can be obtained by selecting the stiffness of the spring 23, the compression stroke and the mass of the impact block 21.

[0046] like Figure 2As shown, the friction testing device 5 includes a cylindrical sample holder 51, a force sensor 52, a laser displacement sensor 53, and a strain gauge 54. The cylindrical sample holder 51 is horizontally mounted on the top of the corresponding support of the frame 1. The cylindrical sample holder 51 is a cylinder with a stepped hole. The large-diameter hole of the cylindrical sample holder 51 is used to mount the friction cylindrical sample 8. The force sensor 52 is mounted on the stepped surface of the inner hole of the cylindrical sample holder 51 at the bottom of the friction cylindrical sample 8. The laser displacement sensor 53 is fixed to the support column of the friction testing device. Figure 6 As shown, strain gauge 54 is attached to the circumferential direction of the outer cylindrical surface of friction cylinder sample 8.

[0047] The testing process of friction testing device 5 is as follows:

[0048] The friction pin specimen 7 is fitted with the impact block 21 push rod and fixed by screw 6. The outer diameters of both the impact block 21 push rod and screw 6 are smaller than the outer diameter of the friction pin specimen 7. The friction cylinder specimen 8 is fitted with the cylinder specimen clamp 51 with clearance. Screw 6 is used to abut against the outer cylindrical surface of the friction cylinder specimen 8 to adjust the coaxiality of the friction cylinder specimen 8 and the impact block 21 push rod. After the impact block 21 push rod moves to the position of the friction cylinder specimen 8 at a high instantaneous speed, it is quickly squeezed into the friction cylinder specimen 8, causing the outer cylindrical surface of the friction pin specimen 7 to rub against the inner cylindrical surface of the friction cylinder specimen 8.

[0049] Force sensor 52 measures the axial force, i.e., frictional force, during the transient high-speed and high-pressure friction process between friction pin sample 7 and friction cylinder sample 8. As an example, a piezoelectric force sensor can be used. Laser displacement sensor 53 measures the real-time distance between its installation position and the front end face of the impact block rod to obtain the displacement curve of the impact block. The differential is the frictional velocity. Strain gauge 54 measures the circumferential strain of the outer cylindrical surface of friction cylinder sample 8. The frictional pressure is calculated based on the thick-walled cylinder theory formula (1).

[0050]

[0051] In equation (1), P is the friction pressure, E is the elastic modulus of the friction cylinder sample 8 material, ε is the measured circumferential strain of the outer cylindrical surface of the friction cylinder sample 8, a is the inner radius of the friction cylinder sample 8, and b is the outer radius of the friction cylinder sample 8. Among these, E, a, and b are fixed values, and the strain ε is proportional to the pressure P.

[0052] After friction is completed, the impact block 21 push rod passes through the friction cylinder sample 8, the impact block 21 impacts the rubber block 13, absorbs the remaining energy of the energy storage mechanism 2 after the friction between the friction pin sample 7 and the friction cylinder sample 8 is completed, and finally the friction pin sample 7 completely passes through the friction cylinder sample 8; after each experiment is completed, the impact block push rod fixing screw 6 is removed, the friction pin sample 7 is taken out, and whether to replace it with a new friction sample is considered according to the experimental purpose and needs.

[0053] At the start of the next experiment, the drive rod 32 pulls the impact block 21 backward to the end of the locking surface of the baffle 41 of the latching structure 4. Under the action of the baffle return torsion spring 410, the baffle 41 rotates 90° clockwise around the baffle shaft 47. During the rotation, the pin 49 of the baffle 41 re-enters the fork of the hook 42 and drives the hook 42 to rotate clockwise around the hook shaft 48 to the locked position. At this time, the rear electromagnet 45 is de-energized, and the trigger 43 rotates clockwise around the baffle shaft 47 to the front electromagnet 44 under the action of the trigger return torsion spring 46. The front electromagnet 44 is energized to provide pulling force, pulling the trigger 43, and the latching structure 4 is in the locked state. The transient high-speed high-pressure friction and wear experiment is repeated.

Claims

1. A transient high-speed high-pressure friction and wear experimental device, characterized in that: It includes a frame (1), an energy storage mechanism (2), a power unit (3), a fastening structure (4), and a friction testing device (5); the power unit (3), the energy storage mechanism (2), and the friction testing device (5) are mounted on the frame (1) from left to right. The power unit (3) drives the energy storage mechanism (2). The fastening structure (4) is installed on the frame (1) at the compression point of the energy storage mechanism (2). The top rod of the energy storage mechanism (2) is directly opposite the center of the nozzle of the friction testing device (5). The sensor components of the friction testing device (5) are respectively installed inside the friction testing device and on the frame. The friction testing device (5) includes a cylindrical sample holder (51), a force sensor (52), a laser displacement sensor (53), and a strain gauge (54). The cylindrical sample holder (51) is horizontally installed on the top of the friction testing device support of the frame (1). The cylindrical sample holder (51) is a cylinder with a stepped hole. The large diameter hole of the cylindrical sample holder (51) is used to fit the friction cylindrical sample (9). The force sensor (52) is installed on the stepped surface of the inner hole of the cylindrical sample holder (51) at the bottom of the friction cylindrical sample (9). The laser displacement sensor (53) is fixed on the column of the friction testing device support. The strain gauge (54) is attached to the circumferential direction of the outer cylindrical surface of the friction cylindrical sample (9). The power device (3) has a power source (31) and a drive rod (32) driven by the power source; the energy storage mechanism (2) includes an impact block (21), a spring (23) and a spindle (24). The impact block (21) is a moving block. The protrusion at the center of the left side has a slot that mates with the drive rod (32), and a push rod extends forward from the center of the right side. The impact block has a through hole that passes through the spindle (24) around its periphery. The spindle (24) is horizontally fixed between two plate-shaped supports of the frame body (12). The spring (23) is fitted on the spindle (24). The spring is clamped between the left plate-shaped support surface of the frame body (12) and the impact block (21). The drive rod (32) is connected to the slot of the protrusion at the center of the impact block (21). The push rod of the impact block passes through the right plate-shaped support of the frame body (12) and faces the opening of the friction test device (5). The latching structure (4) includes a baffle (41), a hook (42), a trigger (43), a front electromagnet (44), a rear electromagnet (45), a trigger return torsion spring (46), a baffle shaft (47), a hook shaft (48), a pin (49), and a baffle return torsion spring (410). The baffle (41) and the trigger (43) are mounted on the left side of the opening of the horizontal plate or bottom plate of the frame body (12) via the baffle shaft (47). The baffle (41) is a triangular plate, and the baffle shaft (47) is sleeved at the right angle of the baffle. The trigger (43) is a strip block, and the trigger (43) has a swing end and a shaft end. The shaft end of the trigger (43) is sleeved in the gap section of the baffle shaft (47). The trigger (43) and the baffle (44) are connected. 1) Located on the opposite side of the baffle shaft; the trigger return torsion spring (46) is sleeved on the trigger (43) mounting side of the baffle shaft (47), and both ends are fixed on the trigger (43) and the frame body (12) respectively; the baffle return torsion spring (410) is sleeved on the baffle (41) mounting side of the baffle shaft (47), and both ends are fixed on the baffle (41) and the frame body (12) respectively; the front electromagnet (44) is installed on the frame body (12) at the locked position of the trigger (43), and the front of the swing end of the trigger (43) is attached to the front electromagnet (44); the rear electromagnet (45) is installed on the frame body (12) at the unlocked position of the trigger (43), and the back of the swing end of the trigger (43) is attached to the rear electromagnet (45); A pin (49) parallel to the baffle shaft (47) is provided on the side of the baffle (41) near the trigger (43) at the short acute angle of the baffle (41); the hook shaft (48) is parallel to the baffle shaft (47) and is installed on the right side of the opening of the horizontal plate or bottom plate of the frame body (12). The hook shaft (48) is equipped with a hook (42), and the free end of the hook (42) has a fork that cooperates with the pin (49). The outer wall of the fork can be inserted into or removed from the notch at the end of the trigger (43) shaft.

2. The transient high-speed high-pressure friction and wear experimental apparatus according to claim 1, characterized in that: The frame (1) includes a base (11), a frame body (12) and a rubber block (13). The frame body (12) is fixed in the middle of the base (11). A power unit bracket is installed on the base 11 on the left side of the frame body (12), and a friction testing device bracket is installed on the base 11 on the right side of the frame body (12). The frame body (12) includes two plate-shaped pillars on the left and right and a horizontal plate connecting the two plate-shaped pillars. An energy storage mechanism (2) is fixedly installed between the two plate-shaped pillars of the frame body (12). The rubber block (13) is attached to the inner side of the plate-shaped pillar on the right side of the frame body (12).

3. The transient high-speed high-pressure friction and wear experimental apparatus according to claim 2, characterized in that: The front end of the drive rod (32) is a T-shaped end face. The large diameter of the T-shaped end face of the drive rod is smaller than the diameter of the hole in the center of the impact block (21). After two horizontally slotted pads (22) are placed on the T-shaped end face of the drive rod (32), there is a gap between the T-shaped end face of the drive rod and the bottom surface of the hole in the impact block.

4. The transient high-speed high-pressure friction and wear experimental apparatus according to claim 3, characterized in that: The power source (31) is a hydraulic cylinder, and the drive rod (32) is a piston rod connected to the hydraulic piston.

5. The transient high-speed high-pressure friction and wear experimental apparatus according to claim 4, characterized in that: The power source (31) is a motor, and the drive rod (32) is an electric push rod driven by the motor.

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