Multifunctional rack for friction-wear testing machine in low-temperature vacuum hydrogen environment

Abstract

The invention discloses a multifunctional rack for a friction-wear testing machine in a low-temperature vacuum hydrogen environment, and relates to the technical field of auxiliary test equipment. A multifunctional rack for a friction-wear testing machine in a low-temperature vacuum hydrogen environment comprises a frame mechanism, the frame mechanism comprises a thickened profile, an upper bottom plate is fixedly embedded in an upper port of the thickened profile, a lower bottom plate is fixedly embedded in a lower port of the thickened profile, and reinforcing ribs are vertically supported at four corners of the inner side of the thickened profile. A thickened profile is fixedly connected to the upper end face of the lower bottom plate, metal plate surrounding plates are fixedly connected to end openings of the side faces of the thickened profile respectively, an annular plate groove is formed in one side of the upper surface of the lower bottom plate, an opening and closing door is embedded in each metal plate surrounding plate, a base mechanism is arranged below the frame mechanism and comprises an annular bottom baffle, and the thickened profile is fixedly connected to the upper end face of the bottom baffle. According to the multifunctional rack for the friction-wear testing machine in the low-temperature vacuum hydrogen environment, the overall noise reduction performance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary test equipment, in particular to a multifunctional stand for a low-temperature vacuum hydrogen environment friction and wear tester. Background Art

[0002] Low temperature vacuum friction and wear testing machine (hereinafter referred to as testing machine) simulates actual working conditions under certain pressure, certain speed, low temperature vacuum and special gas (hydrogen) protection environment, and conducts tests by controlling and changing load, speed, time and other parameters to evaluate the comprehensive friction and wear properties of materials such as friction coefficient and wear amount. It can meet the needs of users in various industries such as petrochemical, machinery, energy, metallurgy, aerospace and other industries in tribology research to develop and test various emerging materials development, new process research and other friction and wear tests.

[0003] The specimen size can be installed in a variety of ways. The spindle and loading method are servo-driven. Closed-loop testing is performed through an industrial computer control system. The test data is displayed in real time in the computer software, and the corresponding data curve can be drawn to analyze the specimen status. After the test is completed, the data curve and report can be printed to facilitate post-test analysis and data storage.

[0004] The testing machine generally adopts a vertical installation structure, which is mainly composed of a workbench, a loading device, a drive system, a specimen friction pair, a refrigeration device, a vacuum system, a measuring device, a protective device, a computer control unit and accessory tools.

[0005] At present, most of the workbenches equipped with testing machines on the market are only used as brackets to support the vacuum chamber of the testing machine. The workbench is relatively rigid in function and cannot be flexibly used with existing testing machines, nor can it facilitate the use of the testing machine. Therefore, there is an urgent need for a multifunctional bench for low-temperature vacuum hydrogen environment friction and wear testing machines to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a multifunctional test stand for a low-temperature vacuum hydrogen environment friction and wear testing machine to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional stand for a low-temperature vacuum hydrogen environment friction and wear testing machine, comprising a frame mechanism, the frame mechanism comprising a thickened profile, the upper end of the thickened profile is fixedly embedded with an upper bottom plate, the lower end of the thickened profile is fixedly embedded with a lower bottom plate, the inner four corners of the thickened profile are vertically supported with reinforcing ribs, the side ends of the thickened profile are respectively fixedly connected with sheet metal enclosures, and a circular plate groove is opened on one side of the upper surface of the lower bottom plate; each of the sheet metal enclosures is embedded with a switch door; A base mechanism is provided below the frame mechanism, and the base mechanism includes an annular bottom stopper, the upper end surface of the bottom stopper is fixedly connected to a thickened profile, and the side of the bottom stopper is symmetrically clamped with a leg assembly for support; Each of the leg assemblies includes a shock-absorbing support leg assembly, and a universal load-bearing wheel assembly is installed near the shock-absorbing support leg assembly; Each of the leg assemblies also includes a matching assembly for linking the shock-absorbing support leg assembly and the universal load-bearing wheel assembly, and the matching assembly includes a rail plate that penetrates and is embedded in the bottom stop, and the lower side of the rail plate is fixedly connected to a pasting plate that penetrates and is embedded in the bottom stop; the surface of the rail plate is penetrated by an L-shaped first slide groove and a straight-shaped second slide groove; a slide plate is slidably inserted on the rail plate, and an inclined third slide groove is penetrated on the surface of the slide plate; the end side of the slide plate is fixedly connected to a connecting plate, and a hand column that is slidably inserted into the second slide groove is fixedly connected to the middle part of the surface of the connecting plate, and the end of the hand column away from the connecting plate is inserted into the second slide groove and fixedly connected to the hand wheel; A base assembly is arranged on the lower base plate.

[0008] As a preferred technical solution of the present invention, the shock-absorbing support leg assembly includes a connecting block, the end surface of which is fixedly connected with a block rod that is slidably inserted into the first slide groove and the third slide groove at the same time, and both ends of the block rod are loaded with a card pad for limiting; A hollow cylinder is vertically penetrated and fixedly connected to the middle of the connecting block, a vertical pole is inserted and inserted into the lower wall of the cylinder, a base is fixedly connected to the lower end of the vertical pole, an inner plate adapted for inserting the cylinder is fixedly connected to the upper end of the vertical pole, and a first elastic member is fixedly connected between the inner plate and the lower wall of the cylinder.

[0009] The universal load-bearing wheel assembly comprises a wheel shell fixedly connected to a plate, the upper surface of the wheel shell is provided with a square first shell groove, the lower surface of the wheel shell is provided with a circular second shell groove, the first shell groove and the second shell groove are connected; the four sides of the lower inner wall of the first shell groove are provided with inner grooves; A flat plate is slidably inserted in the first shell groove, and a universal wheel adapted to be inserted into the second shell groove is installed on the lower surface of the flat plate. Second elastic members are fixedly connected to four sides of the lower surface of the flat plate, and the lower end of the second elastic member is correspondingly inserted into the inner groove.

[0010] As a preferred technical solution of the present invention, the base assembly includes a blocking mechanism, the blocking mechanism includes a support plate, the lower surface of the support plate is fixedly connected to the lower base plate, the support plate corresponds to the plate groove, the outer diameter of the support plate is the same as the inner diameter of the plate groove; the upper surface of the support plate is fixedly connected with a sponge pad.

[0011] The enclosure mechanism further includes an enclosure, the lower end surface of which is fixedly connected to the lower bottom plate, the enclosure corresponds to the plate groove, and the inner diameter of the enclosure is the same as the outer diameter of the plate groove; A notch is provided on one side of the enclosure, and a first sound-absorbing cotton is fixedly embedded on the inner wall surface of the enclosure.

[0012] The base assembly also includes a shell protection mechanism, which includes a base assembly, and the base assembly includes a shell protection adapted to plug in the enclosure, and the lower end surface of the shell protection is fixedly connected to a shell bottom adapted to plug in the board slot, and the shell bottom is movably connected to the board slot through a bearing, and the shell bottom is adapted to plug in the support plate; A notch corresponding to the notch of the enclosure is provided on one side of the protective shell; The inner wall surface of the protective shell is fixedly connected with a second sound-absorbing cotton, and the second sound-absorbing cotton is embedded in the notch on one side corresponding to the notch, and air holes are evenly and equidistantly penetrated on the surface of one side where the second sound-absorbing cotton is embedded in the notch.

[0013] The base assembly is provided with a loading assembly, and the loading assembly includes a centrally symmetrical movable clamp assembly; Each of the movable clamping assemblies comprises a clamping rod penetrating the side wall of the upper port of the protective shell, the inner end of the clamping rod is fixedly connected to a ring frame in the shape of a ring frame, the inner vertical frame of the ring frame is movably sleeved with a sticking roller, and a spring wound around the outer side of the clamping rod is fixedly connected between the outer vertical frame of the ring frame and the protective shell; An annular sleeve gasket is arranged on the lower side of the movable clamp assembly, the inner wall of the sleeve gasket is flush with the inner side of the roller, and a blocking belt penetrating the second sound-absorbing cotton is fixedly connected between the outer wall of the sleeve gasket and the protective shell; The lower side of the ring frame is fixedly engaged with a stop belt.

[0014] The base assembly is also provided with a power assembly, which includes a pulley, and connecting rods are evenly and equidistantly fixedly connected between the pulley and the protective shell, and a belt is sleeved on the outer side of the pulley.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) A multifunctional test bench for a low-temperature vacuum hydrogen environment friction and wear testing machine, which wraps the lower air port of a molecular pump inside a protective shell mechanism to block the noise generated by the molecular pump. Through the effects of a first silencer cotton and a second silencer cotton, the additional noise generated by the operation of the molecular pump is reduced, thereby improving the noise reduction performance of the test bench.

[0016] (2) A multifunctional test bench for a low-temperature vacuum hydrogen environment friction and wear testing machine. The rollers of the movable clamping assemblies on the four sides fit and stabilize the molecular pump. The sleeve gasket is further fixed to the molecular pump housing by the retaining belt and the ring frame, so that the molecular pump can be loaded by simple plug-in, thereby improving the ease of application of the test bench.

[0017] (3) A multifunctional stand for a low-temperature vacuum hydrogen environment friction and wear testing machine, wherein a relative movement occurs between the notch and the gap of the enclosure. When the two are aligned with each other, gas exchange and heat dissipation of the molecular pump are carried out through the air hole, thereby ensuring timely heat dissipation of the molecular pump and improving the service life of the testing machine itself.

[0018] (4) A multifunctional test bench for a low-temperature vacuum hydrogen environment friction and wear testing machine. When the test machine generates vibration during operation, the vibration is delayed by a first elastic member, which can not only eliminate the noise generated by the operation of the test machine, but also improve the vibration reduction performance of the test machine bench.

[0019] (5) A multifunctional stand for a low-temperature vacuum hydrogen environment friction and wear testing machine, which uses the first elastic member of the shock-absorbing support leg assembly to further press down the flat plate through the bottom foot, so that the universal wheel moves out of the second shell groove and contacts the ground, which is convenient for transportation of the testing machine. At the same time, the universal wheel is docked through the shock-absorbing support leg assembly, which can also resist bumps during transportation.

[0020] (6) A multifunctional test bench for a low-temperature vacuum hydrogen environment friction and wear testing machine. By setting a switch door on the sheet metal enclosure, the sheet metal enclosure can be easily opened, so that the base assembly, molecular pump and rotating motor carried in the thickened profile can be exposed, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the framework mechanism of the present invention; Figure 3 It is a schematic diagram of the plate slot of the present invention; Figure 4 It is a schematic diagram of the base mechanism of the present invention; Figure 5 This is a schematic diagram of the first state of the leg assembly of the present invention; Figure 6 It is a schematic diagram of the second state of the leg assembly of the present invention; Figure 7 It is a schematic diagram of the rail plate of the present invention; Figure 8 It is a schematic diagram of the skateboard of the present invention; Fig. 9 It is a schematic diagram of the shock-absorbing support leg assembly of the present invention; Fig.10 This is a schematic diagram of the connection of the cylinder column of the present invention; Fig.11 This is a schematic diagram of the interior of the universal load-bearing wheel assembly of the present invention; Fig.12 It is a schematic diagram of the wheel housing of the present invention; Fig.13 It is a schematic diagram of the position of the base assembly of the present invention; Fig.14 It is a schematic diagram of the connection of the base assembly of the present invention; Fig.15 It is a schematic diagram of the enclosure mechanism of the present invention; Fig.16 It is a schematic diagram of the base assembly of the present invention; Fig.17 It is a schematic diagram of the loading assembly of the present invention; Fig.18 It is a schematic diagram of the power assembly of the present invention.

[0022] In the figure: 1, frame mechanism; 101, upper bottom plate; 102, lower bottom plate; 103, thickened profile; 104, reinforcing rib; 105, sheet metal enclosure; 106, plate groove; 2, base mechanism; 201, bottom stop; 202, track plate; 203, pasting plate; 204, first slide groove; 205, second slide groove; 206, slide plate; 207, third slide groove; 208, connecting plate; 209, hand column; 210, hand wheel; 211, connecting block; 212, block rod; 213, cylinder column; 214, vertical rod; 215, foot; 216, inner plate; 217, first elastic member; 2 18. wheel shell; 219. first shell groove; 220. second shell groove; 221. inner groove; 222. flat plate; 223. universal wheel; 224. second elastic member; 3. enclosure mechanism; 301. support plate; 302. enclosure; 303. first sound-absorbing cotton; 4. shell protection mechanism; 401. shell protection; 402. shell bottom; 403. notch; 404. second sound-absorbing cotton; 405. air hole; 406. clamping rod; 407. ring frame; 408. sticking roller; 409. spring; 410. sleeve; 411. blocking belt; 412. pulley; 413. connecting rod; 414. belt. DETAILED DESCRIPTION

[0023] 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.

[0024] Example: See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.13 , Fig.14A multifunctional stand for a low-temperature vacuum hydrogen environment friction and wear testing machine comprises a frame mechanism 1, the frame mechanism 1 comprises a thickened profile 103, the thickened profile 103 carries a rotating motor of the testing machine and a molecular pump for vacuuming, the upper end of the thickened profile 103 is fixedly embedded with an upper base plate 101, the upper surface of the upper base plate 101 carries a vacuum chamber and a main body of the testing machine, a pump pipe of the molecular pump passes through the upper base plate 101 and is connected to the vacuum chamber of the testing machine, the lower end of the thickened profile 103 is fixedly embedded with a lower base plate 102, and the inner four corners of the thickened profile 103 are vertically supported. The upper bottom plate 101, the lower bottom plate 102 and the reinforcing ribs 104 are supported, and the side ports of the thickened profile 103 are fixedly connected with sheet metal panels 105. The upper bottom plate 101, the lower bottom plate 102 and the reinforcing ribs 104 are made of national standard engineering steel Q235-A, which are processed as a whole according to the size and are aging-treated. They are stable and reliable and meet the requirements of structural space and test rigidity (safety factor 3.0). A circular plate groove 106 is opened on one side of the upper surface of the lower bottom plate 102; the sheet metal panels 105 are decorated by spraying technology, and each sheet metal panel 105 is embedded with a switch door to facilitate observation and maintenance inside the equipment; A base mechanism 2 is provided below the frame mechanism 1. The base mechanism 2 includes an annular bottom block 201. The upper end surface of the bottom block 201 is fixedly connected to the thickened profile 103. The sides of the bottom block 201 are symmetrically clamped with leg components for support. Each leg assembly includes a shock-absorbing support leg assembly, which is used to absorb the vibration generated when the test machine is running, to ensure that the test machine moves smoothly, with low noise and high movement accuracy (vibration is no more than 5mm / s, noise is no more than 75db, and mechanical accuracy is ≤0.01mm). A universal load-bearing wheel assembly is installed near the shock-absorbing support leg assembly. The test machine can be moved at will through the universal load-bearing wheel assembly by simply moving the shock-absorbing support leg assembly upward; Each leg assembly also includes a matching assembly for linking the shock-absorbing support leg assembly and the universal load-bearing wheel assembly, the matching assembly includes a rail plate 202 that penetrates and embeds the bottom stop 201, and a plate 203 that penetrates and embeds the bottom stop 201 is fixedly connected to the lower side of the rail plate 202; an L-shaped first slide groove 204 and a straight second slide groove 205 are provided on the surface of the rail plate 202; a slide plate 206 is slidably inserted on the rail plate 202, and an inclined third slide groove 207 is provided on the surface of the slide plate 206, and a connecting plate 208 is fixedly connected to the end side of the slide plate 206, and a hand column 209 that slides and inserts the second slide groove 205 is fixedly connected to the middle of the surface of the connecting plate 208, and the end of the hand column 209 away from the connecting plate 208 is inserted into the second slide groove 205 and fixedly connected to the hand wheel 210; initially, the lower end of the third slide groove 207 corresponds to the lower end of the first slide groove 204; The lower base plate 102 is provided with a base assembly for assisting the molecular pump of the loading test machine.

[0025] See also Fig. 9 , Fig.10 , Fig.11 , Fig.12 The shock-absorbing support leg assembly includes a connecting block 211, the end surface of which is fixedly connected with a block rod 212 that is slidably inserted into the first slide groove 204 and the third slide groove 207, and both ends of the block rod 212 are loaded with card pads for limiting; A hollow column 213 is vertically penetrated and fixedly connected to the middle of the connecting block 211, and a vertical rod 214 is inserted and inserted into the lower wall of the column 213. The lower end of the vertical rod 214 is fixedly connected to a base foot 215 made of rubber material, and the upper end of the vertical rod 214 is fixedly connected to an inner plate 216 adapted to be inserted into the column 213, and a first elastic member 217 is fixedly connected between the inner plate 216 and the lower wall of the column 213.

[0026] The universal load-bearing wheel assembly includes a wheel shell 218 fixedly connected to the plate 203, the upper surface of the wheel shell 218 is provided with a square first shell groove 219, the lower surface of the wheel shell 218 is provided with a circular second shell groove 220, the first shell groove 219 and the second shell groove 220 are connected; the four sides of the lower inner wall of the first shell groove 219 are provided with inner grooves 221; A flat plate 222 is slidably inserted into the first shell groove 219, and a universal wheel 223 adapted to be inserted into the second shell groove 220 is installed on the lower surface of the flat plate 222. Initially, the universal wheel 223 is retracted into the second shell groove 220, and the four sides of the lower surface of the flat plate 222 are fixedly connected with a second elastic member 224, and the lower end of the second elastic member 224 corresponds to the inner groove 221.

[0027] See also Fig.15 , Fig.16 , Fig.17 , Fig.18 The base assembly includes a blocking mechanism 3, and the blocking mechanism 3 includes a support plate 301. The lower surface of the support plate 301 is fixedly connected to the lower base plate 102. The support plate 301 corresponds to the plate groove 106, and the outer diameter of the support plate 301 is the same as the inner diameter of the plate groove 106; the upper surface of the support plate 301 is fixedly connected with a sponge pad.

[0028] The enclosure mechanism 3 further includes an enclosure 302, the lower end surface of the enclosure 302 is fixedly connected to the lower bottom plate 102, the enclosure 302 corresponds to the plate groove 106, and the inner diameter of the enclosure 302 is the same as the outer diameter of the plate groove 106; There is a notch on one side of the enclosure 302 , and a first sound-absorbing cotton 303 is fixedly embedded on the inner wall surface of the enclosure 302 .

[0029] The base assembly also includes a protective shell mechanism 4, which includes a base assembly, and the base assembly includes a protective shell 401 adapted to plug in the enclosure 302, and the lower end surface of the protective shell 401 is fixedly connected with a shell bottom 402 adapted to plug in the board slot 106, and the shell bottom 402 is movably connected to the board slot 106 through a bearing, and the shell bottom 402 is adapted to plug in the support plate 301; A notch 403 corresponding to the notch of the enclosure 302 is formed on one side of the protective shell 401; The inner wall surface of the protective shell 401 is fixedly connected with a second sound-absorbing cotton 404 . The side of the second sound-absorbing cotton 404 corresponding to the notch 403 is embedded in the notch 403 . The surface of the side of the second sound-absorbing cotton 404 embedded in the notch 403 is uniformly penetrated with air holes 405 .

[0030] A loading assembly is arranged on the base assembly, and the loading assembly includes a centrally symmetrical movable clamp assembly; Each movable clamp assembly includes a clamp rod 406 penetrating the side wall of the upper port of the protective shell 401, the inner end of the clamp rod 406 is fixedly connected to a ring frame 407 in the shape of a ring frame, the inner vertical frame of the ring frame 407 is movably sleeved with a sticking roller 408, and a spring 409 wound around the outer side of the clamp rod 406 is fixedly connected between the outer vertical frame of the ring frame 407 and the protective shell 401; An annular sleeve 410 is provided on the lower side of the movable clamp assembly, the inner wall of the sleeve 410 is flush with the inner side of the roller 408, and a blocking belt 411 penetrating the second sound-absorbing cotton 404 is fixedly connected between the outer wall of the sleeve 410 and the protective shell 401; The lower side of the ring frame 407 is fixedly engaged with the blocking belt 411; the sleeve pad 410 and the blocking belt 411 are both made of elastic material.

[0031] A power assembly is also provided on the base assembly, and the power assembly includes a pulley 412, and a connecting rod 413 is evenly and equidistantly fixedly connected between the pulley 412 and the protective shell 401. A belt 414 is sleeved on the outer side of the pulley 412, and the side of the belt 414 away from the pulley 412 is sleeved on the shaft of the rotating motor of the testing machine.

[0032] The working principle of the present invention is as follows: The noise generated by the friction and wear testing machine during operation can be reduced in a low-temperature vacuum hydrogen environment, but the molecular pump loaded in the thickened profile 103 is not in a corresponding vacuum environment, so the noise generated by the molecular pump cannot be eliminated. By setting a base assembly on one side of the upper surface of the lower base plate 102, the lower air port of the molecular pump is wrapped on the inner side of the shell mechanism 4 to block the noise generated by the molecular pump. Through the effects of the first silencer cotton 303 and the second silencer cotton 404, the additional noise generated by the molecular pump during operation is reduced, and the noise reduction performance of the testing machine stand is improved.

[0033] Through the setting of the base assembly, when the molecular pump is loaded in the thickened profile 103, there is no need to screw the molecular pump. The corresponding sleeve 410 at the lower end of the molecular pump is inserted into the inner side of the protective shell 401, so that the support feet of the molecular pump contact the support plate 301. Through the setting of the movable clamp assembly on the loading assembly, the rollers 408 of the movable clamp assembly on the four sides fit and stabilize the molecular pump. Further, through the fixed connection of the blocking belt 411 and the ring frame 407, the sleeve 410 is adapted to fit the molecular pump housing, so that the molecular pump can be loaded by simple plug-in, thereby improving the simplicity of application of the test machine bench.

[0034] Since the molecular pump needs gas exchange and heat output to work, it is connected to the rotating motor on the test machine through the setting of the power component, and the shell mechanism 4 is rotated accordingly. During the rotation of the shell mechanism 4, the notch 403 and the gap of the enclosure 302 move relative to each other. When the two are corresponding to each other, gas exchange and heat dissipation of the molecular pump are carried out through the air hole 405, thereby ensuring timely heat dissipation of the molecular pump and improving the service life of the test machine itself.

[0035] Under normal working conditions, the hand wheel 210 is turned to move the hand column 209 to one end of the second slide groove 205. At this time, the shock-absorbing support leg assembly is used to support the test bench. When the test machine generates vibration during operation, the first elastic member 217 is used to delay the vibration, which can not only eliminate the noise generated by the operation of the test machine, but also improve the vibration reduction of the test machine stand.

[0036] When it is necessary to switch the working location of the testing machine, the slide plate 206 is slid along the rail plate 202 through the matching assembly so that the hand column 209 is at the other end of the second slide groove 205. At this time, the upper end of the third slide groove 207 coincides with the upper end of the first slide groove 204, and the third slide groove 207 and the first slide groove 204 are simultaneously plugged into the block rod 212, so that the shock-absorbing support leg assembly is lifted and moved accordingly to the top of the universal load-bearing wheel assembly, and the first elastic member 217 of the shock-absorbing support leg assembly is further used to press the flat plate 222 down through the base 215, so that the universal wheel 223 moves out of the second shell groove 220 and contacts the ground, so as to facilitate the transportation of the testing machine. At the same time, the universal wheel 223 is docked through the shock-absorbing support leg assembly, and can also resist bumps during transportation.

[0037] By setting the switch door on the sheet metal enclosure 105, the sheet metal enclosure 105 can be easily opened, so that the base assembly, molecular pump and rotating motor carried in the thickened profile 103 can be exposed, which is convenient for maintenance.

[0038] 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 multifunctional stand for a low-temperature vacuum hydrogen environment friction and wear testing machine, comprising a frame structure (1), the frame structure (1) comprising a thickened profile (103), an upper end of the thickened profile (103) being fixedly embedded with an upper base plate (101), a lower end of the thickened profile (103) being fixedly embedded with a lower base plate (102), four inner corners of the thickened profile (103) being vertically supported by reinforcing ribs (104), and side ends of the thickened profile (103) being fixedly connected with sheet metal enclosures (105), characterized in that: An annular plate groove (106) is provided on one side of the upper surface of the lower base plate (102); a switch door is embedded on each of the sheet metal enclosures (105); A base mechanism (2) is provided below the frame mechanism (1), the base mechanism (2) comprising an annular bottom stopper (201), the upper end surface of the bottom stopper (201) being fixedly connected to a thickened profile (103), and the sides of the bottom stopper (201) being symmetrically clamped with leg assemblies for support; Each of the leg assemblies includes a shock-absorbing support leg assembly, and a universal load-bearing wheel assembly is installed near the shock-absorbing support leg assembly; Each of the leg assemblies further comprises a matching assembly for linking the shock-absorbing support leg assembly and the universal load-bearing wheel assembly, the matching assembly comprising a rail plate (202) penetrating and embedded in the bottom stop (201), the lower side of the rail plate (202) being fixedly connected with a sticking plate (203) penetrating and embedded in the bottom stop (201); a surface of the rail plate (202) being provided with an L-shaped first slide groove (204) and a straight-line second slide groove (205); a slide plate (206) being slidably inserted on the rail plate (202), a surface of the slide plate (206) being provided with an inclined third slide groove (207), an end side of the slide plate (206) being fixedly connected with a connecting plate (208), a hand column (209) being slidably inserted in the second slide groove (205) being fixedly connected to the middle of the surface of the connecting plate (208), and an end of the hand column (209) away from the connecting plate (208) being inserted into the second slide groove (205) and fixedly connected to a hand wheel (210); A base assembly is arranged on the lower base plate (102).

2. The multifunctional stand for low temperature vacuum hydrogen environment friction and wear testing machine according to claim 1, characterized in that: The shock-absorbing support leg assembly comprises a connecting block (211), the end surface of the connecting block (211) being fixedly connected to a block rod (212) that is slidably plugged into the first slide groove (204) and the third slide groove (207) at the same time, and both ends of the block rod (212) are loaded with clamping pads for limiting position; A hollow cylinder (213) is vertically penetrated and fixedly connected to the middle of the connection block (211); a vertical rod (214) is inserted and inserted into the lower wall of the cylinder (213); a foot (215) is fixedly connected to the lower end of the vertical rod (214); an inner plate (216) adapted to be inserted into the cylinder (213) is fixedly connected to the upper end of the vertical rod (214); and a first elastic member (217) is fixedly connected between the inner plate (216) and the lower wall of the cylinder (213).

3. The multifunctional stand for low temperature vacuum hydrogen environment friction and wear testing machine according to claim 2, characterized in that: The universal load-bearing wheel assembly comprises a wheel shell (218) fixedly connected to a plate (203); a square first shell groove (219) is provided on the upper surface of the wheel shell (218); a circular second shell groove (220) is provided on the lower surface of the wheel shell (218); the first shell groove (219) and the second shell groove (220) are communicated; and inner grooves (221) are provided on four sides of the lower inner wall of the first shell groove (219); A flat plate (222) is slidably inserted into the first shell groove (219), and a universal wheel (223) adapted to be inserted into the second shell groove (220) is installed on the lower surface of the flat plate (222). Second elastic members (224) are fixedly connected to four sides of the lower surface of the flat plate (222), and the lower end of the second elastic member (224) is correspondingly inserted into the inner groove (221).

4. The multifunctional stand for low temperature vacuum hydrogen environment friction and wear testing machine according to claim 1, characterized in that: The base assembly comprises a blocking mechanism (3), the blocking mechanism (3) comprising a support plate (301), the lower surface of the support plate (301) being fixedly connected to the lower base plate (102), the support plate (301) corresponding to the plate groove (106), the outer diameter of the support plate (301) being the same as the inner diameter of the plate groove (106); and the upper surface of the support plate (301) being fixedly connected to a sponge pad.

5. The multifunctional stand for low temperature vacuum hydrogen environment friction and wear testing machine according to claim 4, characterized in that: The enclosure mechanism (3) further comprises an enclosure (302), the lower end surface of the enclosure (302) being fixedly connected to the lower bottom plate (102), the enclosure (302) corresponding to the plate groove (106), and the inner diameter of the enclosure (302) being the same as the outer diameter of the plate groove (106); One side of the enclosure (302) has a notch, and the inner wall surface of the enclosure (302) is fixedly embedded with a first sound-absorbing cotton (303).

6. The multifunctional stand for low temperature vacuum hydrogen environment friction and wear testing machine according to claim 5, characterized in that: The base assembly further comprises a shell protection mechanism (4), the shell protection mechanism (4) comprising a base assembly, the base assembly comprising a shell protection (401) adapted to be plugged into the enclosure (302), the lower end surface of the shell protection (401) being fixedly connected to a shell bottom (402) adapted to be plugged into the board slot (106), the shell bottom (402) being movably connected to the board slot (106) via a bearing, and the shell bottom (402) being adapted to be plugged into the support plate (301); A notch (403) corresponding to the notch of the enclosure (302) is formed on one side of the protective shell (401); The inner wall surface of the protective shell (401) is fixedly connected with a second sound-absorbing cotton (404), and a side of the second sound-absorbing cotton (404) corresponding to the notch (403) is embedded in the notch (403), and air holes (405) are evenly and equidistantly penetrated on the surface of the side where the second sound-absorbing cotton (404) is embedded in the notch (403).

7. The multifunctional stand for low temperature vacuum hydrogen environment friction and wear testing machine according to claim 6, characterized in that: The base assembly is provided with a loading assembly, and the loading assembly includes a centrally symmetrical movable clamp assembly; Each of the movable clamping assemblies comprises a clamping rod (406) penetrating the side wall of the upper port of the protective shell (401); the inner end of the clamping rod (406) is fixedly connected to a ring frame (407) in the shape of a ring frame; the inner vertical frame of the ring frame (407) is movably sleeved with a sticking roller (408); and a spring (409) wound around the outer side of the clamping rod (406) is fixedly connected between the outer vertical frame of the ring frame (407) and the protective shell (401); An annular sleeve (410) is provided at the lower side of the movable clamp assembly, the inner wall of the sleeve (410) is flush with the inner side of the roller (408), and a blocking belt (411) penetrating the second sound-absorbing cotton (404) is fixedly connected between the outer wall of the sleeve (410) and the protective shell (401); The lower side of the ring frame (407) is fixedly engaged with a stop belt (411).

8. The multifunctional stand for low temperature vacuum hydrogen environment friction and wear testing machine according to claim 7, characterized in that: The base assembly is also provided with a power assembly, which comprises a pulley (412), connecting rods (413) are evenly and equidistantly fixedly connected between the pulley (412) and the protective shell (401), and a belt (414) is sleeved on the outer side of the pulley (412).

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