Friction-wear testing machine in high-low temperature vacuum hydrogen environment
By introducing a clamping device with sliding rod and hinge structure in the vacuum friction and wear test machine, combined with a rotating device driven by the motor, automated testing in high and low temperature vacuum hydrogen environment is realized, and low testing efficiency and safety risks in the prior art are solved The problem improves the accuracy of the test and the evaluation of material performance.
Patent Information
- Application Number
- CN202411405687.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing vacuum friction and wear tester cannot be tested in high and low temperature vacuum hydrogen environment, and the items need to be manually removed after polishing, which poses safety hazards and low efficiency problems.
A high and low temperature vacuum hydrogen environment friction and wear test machine is designed, using a sliding rod and hinge structure clamping device, combined with a motor-driven rotating device to realize automated item movement and testing, and can simulate friction and wear in high and low temperature vacuum environments. , intuitively display the experimental results.
It realizes automated friction and wear testing in high and low temperature vacuum hydrogen environments, improves the accuracy and safety of the test, simplifies the operation process, enhances the ability to evaluate material wear resistance, and ensures the application of materials in complex environments. performance.
Smart Images
Figure CN119198419A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of friction and wear testing machines, in particular to a high-low temperature vacuum hydrogen environment friction and wear testing machine. Background Art
[0002] The vacuum friction and wear tester is a special equipment used to study the friction and wear properties of materials under vacuum conditions. The vacuum friction and wear tester is mainly used to simulate the friction and wear conditions in a vacuum environment to evaluate the performance of materials in extreme environments. This type of tester has many unique design features and can run multiple tests on the same platform, such as friction, wear, lubrication, scratches and hardness. They usually have high vacuum, wide temperature range, and controllable force and speed to analyze the performance of materials under different environmental conditions. When using the existing vacuum friction and wear tester, it can only be polished by a grinding block, and the position of the object cannot be moved. This situation often reduces the effect of polishing. In addition, it needs to be manually removed after polishing. Especially in the case of temperature imbalance, it is easy to cause certain harm to the human body. Therefore, a high and low temperature vacuum hydrogen environment friction and wear tester is invented to solve the above problems. Summary of the invention
[0003] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a high and low temperature vacuum hydrogen environment friction and wear testing machine.
[0004] (II) Technical solution To achieve the above object, the present invention provides the following technical solutions: A high and low temperature vacuum hydrogen environment friction and wear testing machine, comprising a frame, a vacuum hydrogen reduction furnace is fixedly connected to the top of the frame, a door panel is movably connected to the outside of the vacuum hydrogen reduction furnace, a friction block is movably connected to the hollow inside of the vacuum hydrogen reduction furnace, a movable device is correspondingly connected to the bottom of the friction block, a sliding rod is movably connected to the front end of the frame, and a hinge is movably connected to the connection between the sliding rod and the frame, a clamping device is movably connected to the top of the sliding rod, and the movable device comprises a sliding device and a rotating device, and when the sliding device is extended and retracted back and forth by power, it will drive the rotating device connected to the top to move, so that the rotating device will also slide back and forth continuously, which is convenient for the use of the friction block corresponding to the top; The clamping device includes a rectangular block and an L-shaped block. When the rectangular block is pulled backward, it will drive the L-shaped block to move backward together, so that the two clamping jaws movably connected to the L-shaped block can move toward the center at the same time, thereby clamping the friction-finished material and moving it out.
[0005] Preferably, the sliding device includes a base plate, two support plates are fixedly connected to the center of the top of the base plate, hollow plates are movably connected to the top of the two support plates, a long plate is fixedly connected to the bottom end of the base plate, and the front end of the long plate is fixedly connected to the bottom ends of the two support plates.
[0006] Preferably, a motor is fixedly connected to the top of one end of the base plate, a push rod is fixedly connected to the output shaft end of the motor, and a rotating device is fixedly connected to the top end of the push rod.
[0007] Preferably, the rotating device includes a convex plate, and the rear end of the convex plate is fixedly connected to the top end of the push rod, the front end of the convex plate is fixedly connected to a U-shaped block, the center groove of the U-shaped block is movably connected to a first rotating shaft, and the outer surface of the first rotating shaft is movably connected to a gear.
[0008] Preferably, racks are meshingly connected on both sides of the outer surface of the gear, long blocks are fixedly connected to the bottom of the two racks, and the bottoms of the two long blocks are fixedly connected to the two sides of the top of the hollow plate, two connecting columns are fixedly connected to the center top of the two long blocks, and placement blocks are fixedly connected to the tops of the four connecting columns.
[0009] Preferably, the clamping device includes a conical plate, and the raised portion at the bottom of the conical plate is movably connected to the groove at the top of the sliding rod, a first movable rod is fixedly connected to the groove at the top of the conical plate, a first movable block is movably connected to the outer surface of the first movable rod, a rectangular block is fixedly connected to the top of the first movable block, the raised portions on both sides of the top of the rectangular block are movably connected to one end of an L-shaped block, two second rotating shafts are movably connected to the centers of the two L-shaped blocks, and the bottoms of the two second rotating shafts are fixedly connected to the top of the conical plate.
[0010] Preferably, the bottom of the raised part at the other end of the two L-shaped blocks are movably connected to a second movable block, the grooves at the bottom of the two second movable blocks are movably connected to a second movable rod, and the bottom of the second movable rod is fixedly connected to the top of the bottom end of the conical plate, and the tops of the two second movable blocks are fixedly connected to clamps.
[0011] (III) Beneficial effects Compared with the prior art, the present invention provides a high and low temperature vacuum hydrogen environment friction and wear testing machine, which has the following beneficial effects: 1. The high and low temperature vacuum hydrogen environment friction and wear testing machine sets a sliding rod on the top of the frame and connects a hinge at the folding part of the sliding rod to facilitate the use of the clamping device connected to the groove of the sliding rod. With the support of the sliding rod, the clamping device moves the objects rubbed by the friction and wear testing machine for display, intuitively showing the application effect of the friction and wear testing machine and helping the audience to better understand the functions and advantages of the friction and wear testing machine. When it does not need to be moved, the sliding rod will bend the hinge to drive the clamping device to fold parallel to the front end of the frame, which will not hinder daily use.
[0012] 2. The high and low temperature vacuum hydrogen environment friction and wear testing machine sets a hollow plate on the top of two support plates so that the hollow plate can slide back and forth along the top of the support plate driven by the top rotating device. A motor is connected to one end of the top of the bottom plate, and the output shaft end of the motor is fixed to the bottom of the push rod. Therefore, the push rod can only pull the rotating device fixedly connected to the top of the push rod back and forth when driven by the electric power of the motor. The objects placed on the top of the rotating device can be simulated in a high and low temperature vacuum environment. In this environment, the wear resistance of the material can be measured, so as to select a suitable material.
[0013] 3. The high and low temperature vacuum hydrogen environment friction and wear testing machine, by connecting the convex plate with the top of the push rod, can use the movement of the push rod to push the U-shaped block connected to the front end of the convex plate, so that the gear connected to the inner groove of the U-shaped block drives the meshing racks on both sides to continue to extend forward under the rotation of the first rotating shaft. When the rack moves, the long block fixedly connected to the bottom of the rack will carry the placement block on the top of the connecting column to move back and forth at the bottom of the friction block. The objects in the placement block can be placed in the vacuum hydrogen friction and wear testing machine to simulate the friction and wear conditions under different actual working conditions. This comprehensive testing method can more accurately evaluate the friction and wear performance of the material, ensure that the material can withstand various complex working environments in actual applications, thereby improving the overall performance and durability of the product.
[0014] 4. The high and low temperature vacuum hydrogen environment friction and wear testing machine sets a conical plate at the top groove of the sliding rod to facilitate the sliding of the clamping device as a whole above the sliding rod. When the first movable block slides on the outer surface of the first movable rod, it will move with the rectangular block fixed on the top, and both sides of the top of the rectangular block are movably connected to one end of the L-shaped block. Therefore, when the two L-shaped blocks move backward under the pull of the rectangular block, they will drive the two second movable blocks movably connected at the other end to slide on the outer surface of the second movable rod, thereby quickly moving the two clamping claws on both sides of the second movable rod toward the center at the same time, clamping the friction-completed object for movement display, and directly observing the experimental results. This intuitive display method helps to better understand the purpose and results of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the front folding structure of the clamping jaw device of the present invention; Figure 3 It is a structural schematic diagram of the connection relationship between the sliding device and the rotating device of the present invention; Figure 4 It is a schematic diagram of the structure of the sliding device of the present invention; Figure 5 It is a schematic diagram of the structure of the rotating device of the present invention; Figure 6 This is a schematic diagram of the connection relationship between the U-shaped block and the gear of the present invention; Figure 7 This is a schematic structural diagram of the connection relationship between the push rod and the convex plate of the present invention; Figure 8 It is a schematic diagram of the structure of the clamping jaw device of the present invention.
[0016] In the figure: 1. frame; 2. vacuum hydrogen reduction furnace; 3. door panel; 4. friction block; 5. movable device; 51. sliding device; 511. bottom plate; 512. support plate; 513. hollow plate; 514. long plate; 515. motor; 516. push rod; 52. rotating device; 521. convex plate; 522. U-shaped block; 523. first rotating shaft; 524. gear; 525. rack; 526. long strip block; 527. connecting column; 528. placement block; 6. sliding rod; 61. hinge; 7. clamping claw device; 71. conical plate; 72. first movable rod; 73. first movable block; 74. rectangular block; 75. L-shaped block; 76. second rotating shaft; 77. second movable block; 78. second movable rod; 79. clamping claw. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] See also Figure 1-Figure 8A high and low temperature vacuum hydrogen environment friction and wear testing machine comprises a frame 1, a vacuum hydrogen reduction furnace 2 is arranged on the top of the frame 1, and the top of the frame 1 is fixedly connected to the bottom of the vacuum hydrogen reduction furnace 2, a door panel 3 is arranged on the outside of the vacuum hydrogen reduction furnace 2, and the outside of the vacuum hydrogen reduction furnace 2 is movably connected to the inside of the door panel 3, a friction block 4 is arranged at the hollow part inside the vacuum hydrogen reduction furnace 2, and the hollow part inside the vacuum hydrogen reduction furnace 2 is movably connected to the top of the friction block 4, a movable device 5 is arranged at the bottom of the friction block 4, and the bottom of the friction block 4 is correspondingly connected to the top of the movable device 5, a sliding rod 6 is arranged at the front end of the frame 1, and the front end of the frame 1 is connected to the sliding rod 6 The top is movably connected, and the connection between the sliding rod 6 and the frame 1 is movably connected with a hinge 61. By setting the sliding rod 6 at the top of the frame 1 and connecting the hinge 61 at the folding part of the sliding rod 6, it is convenient to use the clamping device 7 connected to the groove of the sliding rod 6, so that the clamping device 7 can move the friction-finished items of the friction and wear tester for display under the support of the sliding rod 6, intuitively display the application effect of the friction and wear tester, and help the audience better understand the functions and advantages of the friction and wear tester. When it is not necessary to move, the sliding rod 6 will bend under the hinge 61, and drive the clamping device 7 to fold parallel to the front end of the frame 1, which will not hinder daily use. The top of the sliding rod 6 is provided with a clamping device 7, and the top of the sliding rod 6 is movably connected to the bottom of the clamping device 7. The movable device 5 includes a sliding device 51 and a rotating device 52. When the sliding device 51 is extended and retracted back and forth by power, it will drive the rotating device 52 connected to the top to move, so that the rotating device 52 will also slide back and forth continuously, which is convenient for the use of the corresponding friction block 4 at the top; The clamping device 7 includes a rectangular block 74 and an L-shaped block 75. When the rectangular block 74 is pulled backward, it will drive the L-shaped block 75 to move backward together, so that the two clamping jaws 79 movably connected to the L-shaped block 75 can move toward the center at the same time, thereby clamping the friction-finished material and moving it out.
[0019] The sliding device 51 includes a bottom plate 511, two supporting plates 512 are arranged at the top center of the bottom plate 511, and the top center of the bottom plate 511 is fixedly connected to the bottom of the two supporting plates 512, a hollow plate 513 is arranged on the top of the two supporting plates 512, and the top of the two supporting plates 512 is movably connected to the bottom of the hollow plate 513, a long plate 514 is arranged at the bottom end of the bottom plate 511, and the bottom end of the bottom plate 511 is fixedly connected to the bottom of the long plate 514, and the front end of the long plate 514 is fixedly connected to the bottom of the two supporting plates 512.
[0020] A motor 515 is provided at the top of one end of the bottom plate 511, and the top of the bottom plate 511 is fixedly connected to the bottom of the motor 515. A push rod 516 is provided at the output shaft end of the motor 515, and the output shaft end of the motor 515 is fixedly connected to the bottom end of the push rod 516. By setting the hollow plate 513 on the top of the two support plates 512, the hollow plate 513 can slide back and forth along the top of the support plate 512 driven by the top rotating device 52. The top end of the bottom plate 511 is connected to the motor 515, and the output shaft end of the motor 515 is fixed to the bottom of the push rod 516. Therefore, the push rod 516 can only pull the rotating device 52 fixedly connected to the top of the push rod 516 back and forth when driven by the electric power of the motor 515. The objects placed on the top of the rotating device 52 can be simulated tested in a high and low temperature vacuum environment, and in this environment, the wear resistance of the material can be measured to select a suitable material. The top of the push rod 516 is provided with a rotating device 52 , and the top of the push rod 516 is fixedly connected to the bottom of the rotating device 52 .
[0021] The rotating device 52 includes a convex plate 521, and the rear end of the convex plate 521 is fixedly connected to the top of the push rod 516, a U-shaped block 522 is provided at the front end of the convex plate 521, and the front end of the convex plate 521 is fixedly connected to the rear end of the U-shaped block 522, a first rotating shaft 523 is provided at the center groove of the U-shaped block 522, and the center groove of the U-shaped block 522 is movably connected to both ends of the first rotating shaft 523, a gear 524 is provided on the outer surface of the first rotating shaft 523, and the outer surface of the first rotating shaft 523 is movably connected to the center of the gear 524.
[0022] Racks 525 are provided on both sides of the outer surface of the gear 524, and both sides of the outer surface of the gear 524 are meshed with the outer surface of the rack 525. Long blocks 526 are provided at the bottom of the two racks 525, and the bottoms of the two racks 525 are fixedly connected to the tops of the long blocks 526, and the bottoms of the two long blocks 526 are fixedly connected to the two sides of the top of the hollow plate 513. Two connecting columns 527 are provided at the center tops of the two long blocks 526, and the center tops of the two long blocks 526 are fixedly connected to the bottoms of the two connecting columns 527. Placement blocks 528 are provided on the tops of the four connecting columns 527. By connecting the convex plate 521 with the top of the push rod 516, the movement of the push rod 516 can be used to push the convex plate 521. The movement of the U-shaped block 522 connected to the front end of the plate 521 causes the gear 524 connected to the inner groove of the U-shaped block 522 to drive the meshing racks 525 on both sides to continue to extend forward under the rotation of the first rotating shaft 523. When the rack 525 moves, the long block 526 fixedly connected to the bottom of the rack 525 will carry the placement block 528 on the top of the connecting column 527 to move back and forth at the bottom of the friction block 4. The friction and wear conditions of the items in the placement block 528 can be simulated under different actual working conditions by the vacuum hydrogen friction and wear tester. This comprehensive testing method can more accurately evaluate the friction and wear performance of the material, ensure that the material can withstand various complex working environments in actual applications, and thus improve the overall performance and durability of the product. The tops of the four connecting columns 527 are fixedly connected to the bottom of the placement block 528.
[0023] The clamping device 7 includes a conical plate 71, and the raised portion at the bottom of the conical plate 71 is movably connected to the groove at the top of the sliding rod 6; a first movable rod 72 is provided at the groove at the top of the conical plate 71, and the groove at the top of the conical plate 71 is fixedly connected to the bottom of the first movable rod 72; a first movable block 73 is provided on the outer surface of the first movable rod 72, and the outer surface of the first movable rod 72 is movably connected to the groove at the bottom of the first movable block 73; a rectangular block 74 is provided on the top of the first movable block 73, and the top of the first movable block 73 is fixedly connected to the bottom of the rectangular block 74; L-shaped blocks 75 are provided on the raised portions on both sides of the top of the rectangular block 74, and the raised portions on both sides of the top of the rectangular block 74 are movably connected to one end of the L-shaped block 75; a second rotating shaft 76 is provided at the center of the two L-shaped blocks 75, and the centers of the two L-shaped blocks 75 are movably connected to the top of the second rotating shaft 76, and the bottoms of the two second rotating shafts 76 are fixedly connected to the top of the conical plate 71.
[0024] The bottom of the raised part at the other end of the two L-shaped blocks 75 is provided with a second movable block 77, and the bottom of the raised part at the other end of the two L-shaped blocks 75 is movably connected to one side of the top of the second movable block 77, and the second movable rods 78 are provided at the bottom grooves of the two second movable blocks 77, and the bottom grooves of the two second movable blocks 77 are movably connected to the top of the second movable rod 78. By setting the conical plate 71 at the top groove of the sliding rod 6, it is convenient for the clamping device 7 to slide on the top of the sliding rod 6 as a whole, and the first movable block 73 is on the surface of the first movable rod 72. When the surface slides, it will move with the rectangular block 74 fixed at the top, and both sides of the top of the rectangular block 74 are movably connected to one end of the L-shaped block 75. Therefore, when the two L-shaped blocks 75 move backward under the pull of the rectangular block 74, they will drive the two second movable blocks 77 movably connected at the other end to slide on the outer surface of the second movable rod 78, thereby quickly moving the two clamps 79 located on both sides of the second movable rod 78 toward the center at the same time, clamping the friction-completed objects for moving and display, and directly observing the experimental results. This intuitive display method helps to better understand the purpose and results of the experiment. The bottom of the second movable rod 78 is fixedly connected to the top of the bottom end of the conical plate 71, and the tops of the two second movable blocks 77 are both provided with clamps 79, and the tops of the two second movable blocks 77 are both fixedly connected to the bottom of the clamps 79.
[0025] When in use, the clamping device 7 is first driven to slide to the door of the vacuum hydrogen reduction furnace 2 by the parallel support of the sliding rod 6, and then the items polished by the movable device 5 inside the vacuum hydrogen reduction furnace 2 are taken out by the activity of the clamping device 7, so as to more intuitively observe the polishing effect of the friction and wear tester. When it is not needed, the sliding rod 6 is folded to the front end of the frame 1 with the clamping device 7 under the bending of the hinge 61, so as to save space. The movable device 5 includes a sliding device 51 and a rotating device 52. The two support plates 512 in the sliding device 51 are movably connected to the bottom of the hollow plate 513 at the top, and the top of the hollow plate 513 is fixedly connected to the bottom of the rotating device 52. Therefore, when the motor 515 at one end of the top of the bottom plate 511 generates electricity to drive the push rod 516 fixedly connected to the output shaft end to move back and forth, it will be connected to drive the rotating device 52 to move together, so that the rotating device 52 can continuously move its position during polishing. The rotating device 52 includes a convex plate 521. The bottom of the convex plate 521 is fixedly connected to the top of the push rod 516, so that the convex plate 521 can drive the U-shaped block 522 fixedly connected to the top of the convex plate 521 and the gear 524 movably connected at the internal groove to move back and forth under the push of the push rod 516. The outer surface of the gear 524 is meshed with racks 525 on both sides, so the rack 525 will continue to extend forward under the rotation of the gear 524. When the rack 525 moves its position under the rotation of the gear 524, the rack 525 will drive the long strip block 526 fixedly connected at the bottom to swing back and forth together, so that the two connecting columns 527 at the top of the long strip block 526 and the placement block 528 constantly change their positions at the bottom of the friction block 4. This method helps to ensure that the selected material exhibits good wear resistance in actual applications and improves the reliability and life of equipment and products. The clamping device 7 includes a first movable block 73, which can slide back and forth on the outer surface of the first movable rod 72. When the first movable block 73 moves backward, it will drive the rectangular block 74 fixedly connected on the top to move backward together. At this time, the L-shaped blocks 75 on both sides of the top of the rectangular block 74 are movably connected in the direction of movement of the raised part of the rectangular block 74. The second movable block 77 movably connected at the other end of the two L-shaped blocks 75 drives the clamping jaws 79 to slide toward the center on the outer surface of the second movable rod 78, so that the two clamping jaws 79 can grab the polished objects and move them out of the vacuum hydrogen reduction furnace 2. By observing the objects after friction and wear, the wear of the materials can be intuitively seen, thereby understanding the physical properties of the materials such as wear resistance and hardness. In summary, the use of a vacuum hydrogen friction and wear tester for friction testing can not only improve the accuracy and reliability of the test, but also simulate the friction and wear conditions under actual working conditions, providing a more accurate basis for the selection and application of materials. This testing method is particularly important in application fields that require high wear resistance, such as aerospace.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A friction and wear testing machine for a high and low temperature vacuum hydrogen environment, comprising a frame (1), a vacuum hydrogen reduction furnace (2) being fixedly connected to the top of the frame (1), a door panel (3) being movably connected to the outer side of the vacuum hydrogen reduction furnace (2), a friction block (4) being movably connected to the hollowed-out portion inside the vacuum hydrogen reduction furnace (2), a movable device (5) being correspondingly connected to the bottom of the friction block (4), a sliding rod (6) being movably connected to the front end of the frame (1), and a hinge (61) being movably connected to the connection between the sliding rod (6) and the frame (1), and a clamping device (7) being movably connected to the top of the sliding rod (6), characterized in that: The movable device (5) comprises a sliding device (51) and a rotating device (52). When the sliding device (51) is extended and retracted back and forth by power, it drives the rotating device (52) connected to the top to move, so that the rotating device (52) also slides back and forth continuously, which facilitates the use of the friction block (4) corresponding to the top; The clamping jaw device (7) comprises a rectangular block (74) and an L-shaped block (75). When the rectangular block (74) is pulled backward, it will drive the L-shaped block (75) to move backward together, so that the two clamping jaws (79) movably connected to the L-shaped block (75) can move toward the center at the same time, thereby clamping the friction-finished material and moving it out.
2. A high and low temperature vacuum hydrogen environment friction and wear testing machine according to claim 1, characterized in that: The sliding device (51) comprises a bottom plate (511), the top center of the bottom plate (511) is fixedly connected to two support plates (512), the tops of the two support plates (512) are movably connected to a hollow plate (513), the bottom end of the bottom plate (511) is fixedly connected to a long plate (514), and the front end of the long plate (514) is fixedly connected to the bottom ends of the two support plates (512).
3. A high and low temperature vacuum hydrogen environment friction and wear testing machine according to claim 2, characterized in that: A motor (515) is fixedly connected to the top of one end of the bottom plate (511), a push rod (516) is fixedly connected to the output shaft end of the motor (515), and a rotating device (52) is fixedly connected to the top of the push rod (516).
4. A high and low temperature vacuum hydrogen environment friction and wear testing machine according to claim 3, characterized in that: The rotating device (52) comprises a convex plate (521), wherein the rear end of the convex plate (521) is fixedly connected to the top end of the push rod (516), the front end of the convex plate (521) is fixedly connected to a U-shaped block (522), a first rotating shaft (523) is movably connected to a central groove of the U-shaped block (522), and a gear (524) is movably connected to an outer surface of the first rotating shaft (523).
5. The high and low temperature vacuum hydrogen environment friction and wear testing machine according to claim 4, characterized in that: Racks (525) are meshedly connected on both sides of the outer surface of the gear (524), long blocks (526) are fixedly connected to the bottom of the two racks (525), and the bottoms of the two long blocks (526) are fixedly connected to the top of the hollow plate (513) on both sides, and the center tops of the two long blocks (526) are fixedly connected to two connecting columns (527), and the tops of the four connecting columns (527) are fixedly connected to placement blocks (528).
6. The high and low temperature vacuum hydrogen environment friction and wear testing machine according to claim 1, characterized in that: The clamping device (7) comprises a conical plate (71), and a raised portion at the bottom of the conical plate (71) is movably connected to a groove at the top of the sliding rod (6); a first movable rod (72) is fixedly connected to the groove at the top of the conical plate (71); a first movable block (73) is movably connected to the outer surface of the first movable rod (72); a rectangular block (74) is fixedly connected to the top of the first movable block (73); raised portions on both sides of the top of the rectangular block (74) are movably connected to one end of an L-shaped block (75); a second rotating shaft (76) is movably connected to the center of two L-shaped blocks (75); and the bottoms of the two second rotating shafts (76) are fixedly connected to the top of the conical plate (71).
7. A high and low temperature vacuum hydrogen environment friction and wear testing machine according to claim 6, characterized in that: The bottom of the raised portion at the other end of the two L-shaped blocks (75) is movably connected to a second movable block (77), the grooves at the bottom of the two second movable blocks (77) are movably connected to a second movable rod (78), and the bottom of the second movable rod (78) is fixedly connected to the top of the bottom end of the conical plate (71), and the tops of the two second movable blocks (77) are fixedly connected to a clamping claw (79).