CN207516193U - One kind falls tower ring block frictional wear test device - Google Patents

One kind falls tower ring block frictional wear test device Download PDF

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Publication number
CN207516193U
CN207516193U CN201721581075.9U CN201721581075U CN207516193U CN 207516193 U CN207516193 U CN 207516193U CN 201721581075 U CN201721581075 U CN 201721581075U CN 207516193 U CN207516193 U CN 207516193U
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CN
China
Prior art keywords
ring
sample
block
seat
ball
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CN201721581075.9U
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Chinese (zh)
Inventor
屈盛官
段勇
黄丽满
李小强
杨超
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华南理工大学
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Priority to CN201721581075.9U priority Critical patent/CN207516193U/en
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Publication of CN207516193U publication Critical patent/CN207516193U/en

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Abstract

The utility model discloses one kind to fall tower ring block frictional wear test device, including load load maintainer, block test sample clamping mechanism, ring test sample clamping mechanism, frictional power device and is fixedly installed on the rack for falling tower and falling in cabin;Rack has the first support plate, the second support plate and the power plant fixed seat for installing frictional power device, and the first support plate and the second support plate difference are setting up and down;The utility model, which may be mounted at, to be fallen among cabin, carries out Microgravity Falling Tower frictional wear experiment, more actually stimulated microgravity and can explore the influence worn to mechanism friction of microgravity.

Description

One kind falls tower ring block frictional wear test device
Technical field
The utility model is related to microgravity tribological fields more particularly to one kind to fall tower ring block frictional wear test device.
Background technology
With the development of China's aerospace industry, various space mechanisms are increasingly used in space practice, space mechanism It is mainly influenced for a long time by environmental factors such as microgravity, high vacuum, alternating temperature-changing, radiation during one's term of military service in space.For Gao Zhen The research of the environmental factors such as sky, alternating temperature-changing, radiation is more extensive, and takes effective safeguard procedures.It is however right It is also seldom in the research of influence of the microgravity to motion fretting wear, it is also substantially at blank stage at home.
Influence of the microgravity to space mechanism/movable part abrasion is studied, probes into the abrasion mechanism of mechanism under space environment, it is right It solves the problems, such as all kinds of permanently effective military services of Complex Spacecraft system, improves the technical and economic performance index of all kinds of space mechanisms, with And engineer application, technical perfection and theoretical developments of China's aerospace industry in space mechanism field have a very important significance.
Microgravity environment ground simulation experiment method mainly falls tower method, parabolic flight method, water float glass process, hang spring counterweight at present Method, air floating platform etc..Although water float glass process, hang spring counterweight method, air floating platform can it is long when stimulated microgravity, authenticity compared with Difference.Because the existing simulation test means such as sink, suspention, air supporting do not simply fail to solve the three-dimensional motion ground face mould of complicated track Plan problem, and because of factors such as rope is flexible, the movement inertias of resistances such as friction in equipment, big quality mechanism so that it is effectively Property is unsatisfactory.Fall Ta Fa and aircraft parabolic flight can more actually stimulated microgravity, but aircraft parabolic flight It is of high cost, it is limited to mechanism research usage range.And the microgravity time for falling the formation of tower method is short, and to bear big impact It is limited with by cabin environment is fallen, there is presently no the friction wear testing machine that can be suitably used for drop tower experiment, so domestic at present right Fretting wear under drop tower experiment research microgravity environment is just in blank.
Utility model content
For the technical problems in the prior art, the purpose of this utility model is:One kind is provided and falls tower ring block friction Abrasion test device really stimulated microgravity and can explore the influence worn to mechanism friction of microgravity.
The another object of the utility model is:A kind of method for falling tower ring block friction-wear test is provided.
The purpose of this utility model is achieved through the following technical solutions:One kind falls tower ring block frictional wear test device, packet It includes load load maintainer, block test sample clamping mechanism, ring test sample clamping mechanism, frictional power device and is fixedly installed on and falls tower and fall Rack in cabin;
Rack has the first support plate, the second support plate and is fixed for installing the power plant of frictional power device Seat, the first support plate and the second support plate difference are setting up and down;
Block test sample clamping mechanism includes guideway, transmission shaft and block sample mounting base, is offered in the second support plate Mounting hole, guideway are connected in mounting hole, and transmission shaft passes through guideway, and transmission shaft axial end face is protruding with spherical shape and connects Contacting surface, transmission shaft are in contact by ball type of contact surface with load load maintainer, and block sample mounting base is installed on the transmission shaft other end Portion;
Ring test sample clamping mechanism includes ring sample pressure plate, clamping screw and is installed for the ring sample of mounting ring sample Axis, ring sample pressure plate are arranged on the side of ring sample loading, and ring sample pressure plate passes through clamping screw and ring sample installation axle Connection, ring sample is fixed in ring sample installation axle, ring sample is made to be in contact with block sample, frictional power device and ring sample Installation axle is connected, and is rotated for drive ring sample.
Preferably, ring test sample clamping mechanism further includes floating connection mechanism, and floating connection mechanism includes floating buss, floats Connecting pin and float ball;
For floating buss one end fixing sleeve loaded in ring sample installation axle, the floating buss other end is set in frictional power device Transmission main shaft on, the floating buss for being set in part on transmission main shaft offers the first pin connection hole, and transmission main shaft corresponds to pin Connecting hole radially offers the second pin connection hole, and floating connection pin is connected in the first pin connection hole and the second pin connection hole, will Floating buss is connected with transmission main shaft;
The first arc groove, transmission main shaft and ring sample are offered on the ring sample installation axle end face opposite with transmission main shaft The second arc groove is offered on the opposite end face of installation axle, float ball is arranged between ring sample installation axle and transmission main shaft, And it is in contact respectively with the first arc groove and the second arc groove.
Preferably, ring test sample clamping mechanism is additionally provided with ball seat, and ball seat takes the shape of the letter U, and ball, ball are offered on ball seat bottom wall Loaded on transmission main shaft, ball seat corresponds to the first pin connection hole and/or the position in the second pin connection hole and radially offers third cover for seat Pin connection hole, floating connection pin are connected in the first pin connection hole, third pin connection hole and the second pin connection hole, float ball appearance Face is in contact respectively with ball, the first arc groove and the second arc groove.
Preferably, floating connection pin diameter is less than the straight of the first pin connection hole, the second pin connection hole and third pin connection hole Diameter.
Preferably, load load maintainer includes following two structure types:
Structure type one:Load load maintainer include loading handwheel, loading screw rod, spring dipper crowding gear, loading spring with And spring mounting seat, loading handwheel connect with loading screw rod, are rotated for drive load screw rod, and spiral shell is offered in the first support plate Line through-hole, loading screw rod pass through the tapped through hole of the first support plate, and loading screw rod outer surface thread is connect with tapped through hole, spring Dipper crowding gear is connect with the loading screw rod across tapped through hole, and loading spring both ends are installed respectively with spring dipper crowding gear and spring Seat connection, spring mounting seat are in contact with ball type of contact surface.
Structure type two:Load load maintainer includes stepper motor, ball screw, spring push plate, loading spring, spring peace Dress seat and guide rail, stepper motor power output shaft are connect with ball screw, and the sliding nut of spring push plate and ball screw connects It connects, guide rail setting parallel with ball screw, spring push plate is slidably connected on guide rail, and loading spring both ends push away respectively with spring Plate is connected with spring mounting seat, and spring mounting seat is in contact with ball type of contact surface.
Preferably, spring dipper crowding gear includes setting gradually the locking nut loaded on screw rod, holding nut and stop Thrust bearing, locking nut and holding nut are arranged on the first support plate both sides, and the first support plate is located at locking nut and support spiral shell Between mother, thrust bearing is connected with loading spring;
The pressure sensor for detecting loading force size is additionally provided with, pressure sensor is fixed on spring mounting seat, There is force block, the ball type of contact surface is set on force block, ball type of contact surface and pressure sensing on transmission shaft axial end portion Device is in contact.
Preferably, friction tension detection mechanism is further included, friction tension detection mechanism includes plate washer, driver plate and frictional force and passes Sensor, plate washer fixed setting, driver plate are fixedly connected with transmission shaft, and block sample mounting base is installed on the bottom end face of transmission shaft On, the axle center of block sample mounting base center and transmission shaft is staggered setting, and friction force sensor is arranged on plate washer or driver plate And on the position that plate washer and driver plate are in contact in test.
Preferably, block test sample clamping mechanism further includes clamping mechanism bearing block, seat of honour baffle, lower seat baffle and axle sleeve axis Hold, clamping mechanism bearing block is fixedly installed in mounting hole, and axle sleeve bearing is set in clamping mechanism bearing block, seat of honour baffle and Lower seat baffle is separately positioned in clamping mechanism bearing block upper opening and lower openings, and guideway is installed on axle sleeve bearing In, transmission shaft passes through seat of honour baffle, guideway and lower seat baffle;
Frictional power device includes motor and transmission main shaft, and power plant fixed seat includes motor support mechanism and master Axis supporting mechanism, motor are installed in motor support mechanism, and the line shaft of motor leads to after passing through the bearing in motor support mechanism It crosses and drive ring test sample clamping mechanism is connect with transmission main shaft, wear and be connected in the bearing of main shaft support mechanism in the middle part of transmission main shaft.
Preferably, rack includes support column, and support column bottom, which is fixed on, falls the falling in cabin of tower, the fixed setting of the first support plate In upper part of the supporting column, the second support plate is fixedly connected in the middle part of support column;
It is the cooperation conical surface that ring sample installation axle, which is used for the matched face of ring sample, and ring sample medial surface is with coordinating the conical surface The assembling conical surface to match.
The utility model is had the following advantages relative to the prior art and effect:
1st, the utility model is simple in structure, precision is higher, stabilized structure, strong shock resistance, and each entirely by reference to tower is fallen Item index Design, may be mounted at and fall among cabin, carries out Microgravity Falling Tower frictional wear experiment, can more actually simulate micro- heavy The influence that force environment and exploration microgravity wear mechanism friction makes up mechanism friction abrasion examination under true microgravity environment at present The blank tested preferably explores the influence that microgravity wears space mechanism.
2nd, the fretting wear that the utility model can really under stimulated microgravity for drop tower test.
3rd, since the microgravity time for falling tower formation is short, the part of data acquisition of the utility model uses high speed acquisition instrument Device, can high speed acquire frictional force data highly densely, conducive to experimental analysis.
4th, the ring specimen clamping part of the utility model uses floating connection mechanism, is conducive to mitigation and falls cabin dropping process pair The impact of sample and fixture influences, simultaneously as fixture using floating connection there are gap, after microgravity environment is entered, by In the disappearance of gravity, the movement of relocation mechanism can be caused to change so that experimental phenomena is more obvious.
5th, the utility model can also be used individually on ground, for common ring block friction-wear test.
Description of the drawings
Fig. 1 is the structure diagram of the utility model;
Fig. 2 is the schematic diagram of the load load maintainer of the utility model;
Fig. 3 is the schematic diagram of the ring test sample clamping mechanism of the utility model;
Fig. 4 is the structure diagram of the load load maintainer of the utility model embodiment five;
Fig. 5 is the enlarged drawing of load load maintainer part in Fig. 4.
Wherein, 1 cabin, is fallen, the 2, first support plate, the 3, second support plate, 4, loading handwheel, 5, loading screw rod, 6, loading bullet Spring, 7, spring mounting seat, 8, guideway, 9, transmission shaft, 10, block sample mounting base, 11, ring sample pressure plate, 12, locking screw Bolt, 13, ring sample installation axle, 14, block sample, 15, ring sample, 16, floating buss, 17, floating connection pin, 18, float ball, 19th, ball seat, 20, pressure sensor, 21, plate washer, 22, driver plate, 23, friction force sensor, 24, clamping mechanism bearing block, 25, Seat of honour baffle, 26, lower seat baffle, 27, axle sleeve bearing, 28, motor, 29, transmission main shaft, 30, motor support mechanism, 31, main shaft Supporting mechanism, 32, locking nut, 33, holding nut, 34, thrust bearing, 35, support column, 36, force block, 37, ball contact Face, 38, stepper motor, 39, ball screw, 40, spring push plate, 41, loading spring, 42, spring mounting seat, 43, guide rail, 44, Sliding nut.
Specific embodiment
The utility model is described in further detail with reference to embodiment and attached drawing, but the implementation of the utility model Mode is without being limited thereto.
Embodiment one:
One kind falls tower ring block frictional wear test device, including rack, load load maintainer, block test sample clamping mechanism, ring Test sample clamping mechanism and frictional power device;
Rack, which is fixedly installed on, falls the falling in cabin of tower, and rack has the first support plate, the second support plate and for installing The power plant fixed seat of frictional power device, the first support plate and the second support plate difference are setting up and down;
Load load maintainer packet loading handwheel, loading screw rod, spring dipper crowding gear, loading spring and spring mounting seat, Loading handwheel is connect with loading screw rod, is rotated for drive load screw rod, and tapped through hole is offered in the first support plate, loads spiral shell Bar passes through the tapped through hole of the first support plate, and loading screw rod outer surface thread is connect with tapped through hole, and spring dipper crowding gear is with wearing The loading screw rod connection of tapped through hole is crossed, loading spring both ends are connect respectively with spring dipper crowding gear and spring mounting seat;
Block test sample clamping mechanism includes guideway, transmission shaft and the block sample mounting base for mounting blocks sample, the Mounting hole is offered in two support plates, guideway is connected in mounting hole, and transmission shaft passes through guideway, transmission shaft axial end Face is protruding with ball type of contact surface, and transmission shaft is in contact by ball type of contact surface with spring mounting seat so that spring mounting seat and (point contact) is contacted for point face, it is ensured that between transmission shaft when vibrated, when the loading force loaded passes to transmission shaft Not vibrated influence, while the frictional force between spring mounting seat and transmission shaft can be also reduced, it reduces and generates torsion in transmission shaft Influence during square, so as to which friction force sensor be enable more accurately to be detected.It is another that block sample mounting base is installed on transmission shaft End, transmission shaft is mounted in guideway so that transmission shaft driven is sensitive, and compact-sized, precision is high, and fixed.
Ring test sample clamping mechanism includes ring sample pressure plate, clamping screw and is installed for the ring sample of mounting ring sample Axis, ring sample pressure plate install axis connection by clamping screw and ring sample, ring sample are fixed in ring sample installation axle, is made Ring sample is in contact with block sample, and frictional power device is connected with ring sample installation axle, is rotated for drive ring sample.
Preferably, ring test sample clamping mechanism further includes floating connection mechanism, and floating connection mechanism includes floating buss, floats Connecting pin and float ball;
For floating buss one end fixing sleeve loaded in ring sample installation axle, the floating buss other end is set in frictional power device Transmission main shaft on, the floating buss for being set in part on transmission main shaft offers the first pin connection hole, and transmission main shaft corresponds to pin Connecting hole radially offers the second pin connection hole, and floating connection pin is connected in the first pin connection hole and the second pin connection hole, will Floating buss is connected with transmission main shaft;
The first arc groove, transmission main shaft and ring sample are offered on the ring sample installation axle end face opposite with transmission main shaft The second arc groove is offered on the opposite end face of installation axle, float ball is arranged between ring sample installation axle and transmission main shaft, And it is in contact respectively with the first arc groove and the second arc groove.
Preferably, ring test sample clamping mechanism is additionally provided with ball seat, and ball seat takes the shape of the letter U, and ball, ball are offered on ball seat bottom wall Loaded on transmission main shaft, ball seat corresponds to the first pin connection hole and/or the position in the second pin connection hole and radially offers third cover for seat Pin connection hole, floating connection pin are connected in the first pin connection hole, third pin connection hole and the second pin connection hole, float ball appearance Face is in contact respectively with ball, the first arc groove and the second arc groove.
Preferably, floating connection pin diameter is less than the straight of the first pin connection hole, the second pin connection hole and third pin connection hole Diameter.
Preferably, the pressure sensor for detecting loading force size is additionally provided with, pressure sensor is fixed on spring peace It fills on seat, there is force block on transmission shaft axial end portion, the ball type of contact surface is set on force block, ball type of contact surface and pressure Force snesor is in contact.
Preferably, spring dipper crowding gear includes setting gradually the locking nut loaded on screw rod, holding nut and stop Thrust bearing, locking nut and holding nut are arranged on the first support plate both sides, and the first support plate is located at locking nut and support spiral shell Between mother, thrust bearing is connected with loading spring.
Preferably, rack includes support column, and support column bottom, which is fixed on, falls the falling in cabin of tower, the fixed setting of the first support plate In upper part of the supporting column, the second support plate is fixedly connected in the middle part of support column;
It is the cooperation conical surface that ring sample installation axle, which is used for the matched face of ring sample, and ring sample medial surface is with coordinating the conical surface The assembling conical surface to match so as to make the installation of ring sample more secured, makes test result more be bonded reality.
Embodiment two:
The present embodiment and embodiment one the difference lies in:Friction tension detection mechanism is further included, rub tension detection mechanism packet Plate washer, driver plate and friction force sensor, plate washer fixed setting are included, driver plate is fixedly connected with transmission shaft, the installation of block sample Seat is installed on the bottom end face of transmission shaft, and the axle center of block sample mounting base center and transmission shaft is staggered setting, frictional force biography Sensor is arranged on plate washer or driver plate, and on the position that plate washer and driver plate are in contact in test.
This, which is sentenced for friction force sensor is installed on plate washer, illustrates:During the test, transmission shaft rotation, which drives, passes Movable plate is rotated to plate washer, and so as to which driver plate be made to be contacted with friction force sensor, after the two contact, friction force sensor is i.e. detectable The torque that transmission shaft generates in test process, and corresponding frictional force is converted into according to the torsional forces measured, so as to measure test When, the block sample-by-produced frictional force of ring sample friction.
Embodiment three:
The present embodiment the difference lies in:Block test sample clamping mechanism further includes clamping mechanism bearing block, seat of honour baffle, lower seat Baffle and axle sleeve bearing, clamping mechanism bearing block are fixedly installed in mounting hole, and axle sleeve bearing is set to clamping mechanism bearing In seat, seat of honour baffle and lower seat baffle are separately positioned in clamping mechanism bearing block upper opening and lower openings, guideway It is installed in axle sleeve bearing, transmission shaft passes through seat of honour baffle, guideway and lower seat baffle.
Example IV:
The present embodiment the difference lies in:Frictional power device includes motor and transmission main shaft, power plant fixed seat Including motor support mechanism and main shaft support mechanism, motor is installed in motor support mechanism, and the line shaft of motor passes through electricity By connecting drive ring test sample clamping mechanism with transmission main shaft after bearing in machine supporting mechanism, worn in the middle part of transmission main shaft and be connected on master In the bearing of axis supporting mechanism.Preferably, the motor is stepper motor.
The bearing of motor support mechanism uses deep groove ball bearing, stepper motor and transmission with the bearing of main shaft support mechanism Deep groove ball bearing is respectively adopted in motor support mechanism and main shaft support mechanism in main shaft so that high transmission accuracy, and pacify Fill firm stable, strong shock resistance.
The course of work and operation principle of the utility model:
It is as follows to fall tower friction-wear test step:
The utility model is mounted on and is fallen on the installing plate in cabin, and ensures that installation is firm, is powered on and control system.
After ring sample set is attached in ring sample installation axle, ring sample pressure plate is fixed on by ring sample by clamping screw Side is packed into, so as to which ring sample is fixed in ring sample installation axle.Block sample is installed in block sample mounting base.
After block sample and ring sample install, after rotation loading handwheel loads scheduled load, cabin closing will be fallen, then Rise falls cabin and prepares drop tower experiment.Start stepper motor using controller, block sample and ring sample is made to carry out relative motion, and produce Raw friction, after rubbing stable, release falls cabin and is allowed to free-falling, then extracts in analysis of experimental data difference gravity environment, The friction condition of block sample and ring sample completes drop tower experiment.
When stepper motor operates, block sample-ring sample friction adjutant generates relative motion, since block sample bias fills Folder, so the frictional force between block sample-ring sample friction is secondary will generate a tangential torsional forces, this torsional forces to block sample By transmission shaft driver plate, there are one movement tendencies, are then measured by the friction force sensor between driver plate and plate washer This torsional forces is simultaneously converted into corresponding frictional force, so as to obtain frictional force data during experiment.
It is very high to analog acquisition frequency requirement since the drop tower experiment time is very short, the simulation that the utility model uses Amount frequency acquisition is 2k/s, and acquired data storage is in the chips, can export as the multiple formats such as Excel, text file, be convenient for Subsequent analysis is used with filing.
Due to fixture, using floating connection, there are gaps, after entering in microgravity environment, due to the disappearance of gravity, can lead The motor behavior of the relocation mechanism containing gap is caused to change, so as to can also influence friction behavior so that experimental phenomena is brighter It is aobvious.
This experimental provision will be completed once in gravity environment and in microgravity environment simultaneously, pass through comparative analysis microgravity Influence of the environment to friction behavior;It is run in gravity environment first steady so that friction coefficient curve is more steady, then Release falls cabin, carries out of short duration microgravity experiment, falls under cabin and falls on least significant end and can stop motor.It is in due to falling before cabin falls Gravity environment, in microgravity environment in dropping process, friction coefficient is certain to difference, and because the microgravity environment time only Have 3.6 seconds, so the method for falling tower ring block friction-wear test of the utility model is used to analyze friction coefficient.
Ring specimen clamping part uses floating connection mechanism, and after mechanism is stable in gravity environment, release falls cabin Into the microgravity stage, due to the disappearance of gravity, the motor behavior of the floating connection mechanism containing gap can be caused to change, from And it can also influence friction behavior so that experimental phenomena is more obvious, and uses high speed acquisition device, by rubbing for entire experimental stage It wipes force data to be acquired and preserve, comparative analysis goes out influence of the microgravity to fretting wear.
Main application:Utility model works are fallen in gravity in cabin, are mainly used for the material friction abrasiveness of drop tower experiment It can test and the measurement of friction coefficient.
Fall indoor environment requirement:Overall mass:≤ 75kg, complete machine height:≤ 1400mm, diameter:≤ 860mm, machine in cabin, Electricity, computer equipment impact resistance:>=20g, power supply:24V/30A, therefore, the utility model are designed to meet above-mentioned requirements On it is few using the quantity of parts, and connected between parts it is compact and secured, so as to reach overall quality simple in structure in 50kg Left and right, complete machine height can be no more than 800mm, and complete machine diameter range is no more than 800mm, while also has the spy of strong shock resistance Point, while driven using stepper motor so as to meet power requirement.
Since the microgravity time only has 3.6 seconds, it is desirable that influence of the microgravity to friction coefficient can be detected in a short time, So analog acquisition frequency requirement is very high, the analog acquisition frequency that the utility model uses is 2k/s, and gathered data is deposited Storage in the chips, can export as the multiple formats such as Excel, text file, be used convenient for subsequent analysis and filing.
Ground conventional friction wear test step is as follows:
The utility model can also be mounted on ground, carry out common ring block frictional wear experiment.It before the test, will be various Sensor is connected with computer, and various data are observed in real time so as to convenient.Then start motor by the parameter specifically needed Friction-wear test is carried out, completes experiment.
Embodiment five:
The present embodiment the difference lies in:Load load maintainer includes stepper motor, ball screw, spring push plate, loading Spring, spring mounting seat and guide rail, stepper motor power output shaft are connect with ball screw, spring push plate and ball screw Sliding nut connects, and guide rail setting parallel with ball screw, spring push plate is slidably connected on guide rail, loading spring both ends point It is not connect with spring push plate and spring mounting seat, spring mounting seat is in contact with ball type of contact surface.
After block sample and ring sample install, start stepper motor driving ball screw rotation, spring push plate is along guide rail Sliding through loading spring makes spring mounting seat discharge plus-pressure to transmission shaft, so as to be loaded into scheduled load.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiment of the utility model is not by above-mentioned The limitation of embodiment, the change made under other any Spirit Essences and principle without departing from the utility model are modified, are replaced In generation, simplifies combination, should be equivalent substitute mode, is included within the scope of protection of the utility model.

Claims (9)

1. one kind falls tower ring block frictional wear test device, it is characterised in that:Including load load maintainer, block specimen clamping machine It structure, ring test sample clamping mechanism, frictional power device and is fixedly installed on and falls the rack that tower is fallen in cabin;
Rack has the first support plate, the second support plate and the power plant fixed seat for installing frictional power device, the One support plate and the second support plate difference are setting up and down;
Block test sample clamping mechanism includes guideway, transmission shaft and block sample mounting base, and installation is offered in the second support plate Hole, guideway are connected in mounting hole, and transmission shaft passes through guideway, and transmission shaft axial end face is protruding with ball contact Face, transmission shaft are in contact by ball type of contact surface with load load maintainer, and block sample mounting base is installed on transmission shaft the other end;
Ring test sample clamping mechanism includes ring sample pressure plate, clamping screw and the ring sample installation axle for mounting ring sample, Ring sample pressure plate is arranged on the side of ring sample loading, and ring sample pressure plate is connected by clamping screw and ring sample installation axle It connects, ring sample is fixed in ring sample installation axle, ring sample is made to be in contact with block sample, frictional power device is pacified with ring sample Dress axis is connected, and is rotated for drive ring sample.
2. according to claim 1 fall tower ring block frictional wear test device, it is characterised in that:Ring test sample clamping mechanism is also Including floating connection mechanism, floating connection mechanism includes floating buss, floating connection pin and float ball;
For floating buss one end fixing sleeve loaded in ring sample installation axle, the floating buss other end is set in the biography of frictional power device On dynamic main shaft, the floating buss for being set in part on transmission main shaft offers the first pin connection hole, and transmission main shaft corresponds to pin connection Aperture is connected in the first pin connection hole and the second pin connection hole, will float to the second pin connection hole, floating connection pin is offered Axle sleeve is connected with transmission main shaft;
The first arc groove is offered on the ring sample installation axle end face opposite with transmission main shaft, transmission main shaft is installed with ring sample The second arc groove is offered on the opposite end face of axis, float ball is arranged between ring sample installation axle and transmission main shaft, and point It is not in contact with the first arc groove and the second arc groove.
3. according to claim 2 fall tower ring block frictional wear test device, it is characterised in that:Ring test sample clamping mechanism is also Ball seat is provided with, ball seat takes the shape of the letter U, and ball is offered on ball seat bottom wall, and ball seat is set on transmission main shaft, and ball seat corresponds to first The position in pin connection hole and/or the second pin connection hole radially offers third pin connection hole, and floating connection pin is connected to the first pin In connecting hole, third pin connection hole and the second pin connection hole, floating outer surface of ball respectively with ball, the first arc groove and second Arc groove is in contact.
4. according to claim 3 fall tower ring block frictional wear test device, it is characterised in that:Floating connection pin diameter is small Diameter in the first pin connection hole, the second pin connection hole and third pin connection hole.
5. according to claim 1 fall tower ring block frictional wear test device, it is characterised in that:Load load maintainer includes Following two structure types:
Structure type one:Load load maintainer includes loading handwheel, loading screw rod, spring dipper crowding gear, loading spring and bullet Spring mounting base, loading handwheel connect with loading screw rod, are rotated for drive load screw rod, and offering screw thread in the first support plate leads to Hole, loading screw rod pass through the tapped through hole of the first support plate, and loading screw rod outer surface thread is connect with tapped through hole, and spring pushes Mechanism is connect with the loading screw rod across tapped through hole, and loading spring both ends connect respectively with spring dipper crowding gear and spring mounting seat It connects, spring mounting seat is in contact with ball type of contact surface;
Structure type two:Load load maintainer includes stepper motor, ball screw, spring push plate, loading spring, spring mounting seat And guide rail, stepper motor power output shaft are connect with ball screw, the sliding nut connection of spring push plate and ball screw is led Rail setting parallel with ball screw, spring push plate are slidably connected on guide rail, loading spring both ends respectively with spring push plate and Spring mounting seat connects, and spring mounting seat is in contact with ball type of contact surface.
6. according to claim 5 fall tower ring block frictional wear test device, it is characterised in that:Spring dipper crowding gear includes Locking nut, holding nut and the thrust bearing on loading screw rod are set gradually, locking nut and holding nut are arranged on First support plate both sides, between locking nut and holding nut, thrust bearing is connected the first support plate with loading spring;
The pressure sensor for detecting loading force size is additionally provided with, pressure sensor is fixed on spring mounting seat, transmission There is force block, the ball type of contact surface is set on force block, ball type of contact surface and pressure sensor phase on axis axial end portion Contact.
7. according to claim 1 fall tower ring block frictional wear test device, it is characterised in that:Further include frictional force detection Mechanism, friction tension detection mechanism include plate washer, driver plate and friction force sensor, plate washer fixed setting, driver plate and transmission Axis is fixedly connected, and block sample mounting base is installed on the bottom end face of transmission shaft, the axis of block sample mounting base center and transmission shaft The heart is staggered setting, and friction force sensor is arranged on plate washer or driver plate and is in contact positioned at plate washer and driver plate in test Position on.
8. according to claim 1 fall tower ring block frictional wear test device, it is characterised in that:Block test sample clamping mechanism is also Installation is fixedly installed in including clamping mechanism bearing block, seat of honour baffle, lower seat baffle and axle sleeve bearing, clamping mechanism bearing block Kong Zhong, axle sleeve bearing are set in clamping mechanism bearing block, and seat of honour baffle and lower seat baffle are separately positioned on clamping mechanism bearing Seat upper opening and lower openings on, guideway is installed in axle sleeve bearing, transmission shaft pass through seat of honour baffle, guideway and Lower seat baffle;
Frictional power device includes motor and transmission main shaft, and power plant fixed seat includes motor support mechanism and main shaft branch Support mechanism, motor are installed in motor support mechanism, the line shaft of motor pass through after the bearing in motor support mechanism by with Transmission main shaft connects drive ring test sample clamping mechanism, wears and is connected in the bearing of main shaft support mechanism in the middle part of transmission main shaft.
9. according to claim 1 fall tower ring block frictional wear test device, it is characterised in that:Rack includes support column, Support column bottom, which is fixed on, falls the falling in cabin of tower, and the first support plate is fixedly installed on upper part of the supporting column, and the second support plate, which is fixed, to be connected It is connected in the middle part of support column;
It is the cooperation conical surface that ring sample installation axle, which is used for the matched face of ring sample, and ring sample medial surface is with coordinating conical surface phase The assembling conical surface matched.
CN201721581075.9U 2017-11-22 2017-11-22 One kind falls tower ring block frictional wear test device CN207516193U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110672282A (en) * 2019-09-23 2020-01-10 天津大学 Method for testing dynamic sealing performance of sliding friction pair
CN110686838A (en) * 2019-09-23 2020-01-14 天津大学 Method for evaluating dynamic sealing performance of sliding friction pair
CN110686839A (en) * 2019-09-23 2020-01-14 天津大学 Sliding friction pair dynamic sealing performance testing equipment based on gas pressure source
CN110686840A (en) * 2019-09-23 2020-01-14 天津大学 Sliding friction pair dynamic sealing performance testing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110672282A (en) * 2019-09-23 2020-01-10 天津大学 Method for testing dynamic sealing performance of sliding friction pair
CN110686838A (en) * 2019-09-23 2020-01-14 天津大学 Method for evaluating dynamic sealing performance of sliding friction pair
CN110686839A (en) * 2019-09-23 2020-01-14 天津大学 Sliding friction pair dynamic sealing performance testing equipment based on gas pressure source
CN110686840A (en) * 2019-09-23 2020-01-14 天津大学 Sliding friction pair dynamic sealing performance testing system

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