CN112903499B - Rolling sliding torsion test device based on oscillating bar mechanism - Google Patents
Rolling sliding torsion test device based on oscillating bar mechanism Download PDFInfo
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- CN112903499B CN112903499B CN202110068418.6A CN202110068418A CN112903499B CN 112903499 B CN112903499 B CN 112903499B CN 202110068418 A CN202110068418 A CN 202110068418A CN 112903499 B CN112903499 B CN 112903499B
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- disc
- motor
- test piece
- boss
- swing
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- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 238000005096 rolling process Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract 4
- 230000033001 locomotion Effects 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 210000000629 knee joint Anatomy 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
Abstract
The invention discloses a rolling sliding torsion test device based on a swing rod mechanism, which comprises an installation frame, wherein the upper end of the installation frame is of a semi-sealed closed box body structure, and an upper sample assembly and a lower sample assembly are arranged on the installation frame. The upper motor drives the disc to rotate, and the swing rod is linked with the disc to realize reciprocating rotary swing in an interval of +/-30 degrees; can install the sample spare of different materials, can realize the test of dry, wet two kinds of friction forms according to experimental purpose between the contact surface: when the upper motor acts alone, the contact surface realizes single-axial reciprocating sliding; the lower motor realizes the fixed-shaft fixed-angle reciprocating torsional motion when acting alone; the two motors act simultaneously, and the sample can realize rolling, sliding and twisting combined contact motion. The device can adjust the rotation angle and speed, and the torsion angle and speed, so as to realize the matching of different experimental parameters; the measuring device can display and record relevant parameters such as contact force and contact temperature among experimental pieces in real time.
Description
Technical Field
The invention belongs to the technical field of rolling, sliding and twisting, and particularly relates to a rolling, sliding and twisting test device based on a swing rod mechanism.
Background
Roll-and-skid devices are mainly found in structures where rolling is the main form of motion, such as tires for vehicles, pulleys, joints of the lower limbs of the human body, and the like. The rolling-sliding-twisting device can simulate various motion modes such as rolling, sliding, rolling, twisting, rolling-sliding twisting and the like, and determine the mechanical property of the contact material and the geometric dimension of the appearance of the prosthesis. Therefore, the experimental equipment capable of realizing the rolling-sliding-twisting composite motion characteristic is important for verifying the mechanical property and the appearance design of the material.
Most of the current experimental devices are single sliding, rolling or simple twisting, the number of the experimental machines comprehensively considering various motion forms is small, certain influence on subsequent design links can be caused due to incompleteness of experimental data, and simultaneously, the waste of expenses and experimental space can be caused to repeated purchase of the machines.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a rolling-sliding-torsion test device based on a swing rod mechanism, which can measure the contact mechanical characteristics and the friction and wear characteristics of a contact material during rolling, sliding, rolling-sliding, torsion and rolling-sliding-torsion combined motion, such as the joint friction and wear motion of human knee joints and knee joint prostheses.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a rolling, sliding and twisting test device based on an oscillating bar mechanism comprises a mounting rack, wherein the upper end of the mounting rack is of a semi-closed box structure, an upper sample assembly and a lower sample assembly are arranged on the mounting rack, the upper sample assembly comprises a first motor, a first disc boss, a first disc, an oscillating bar, an upper test piece, an oscillating shaft and a bearing, the motor is arranged at the upper end of the mounting rack, a rotating shaft of the first motor is connected with the first disc, the first disc boss is arranged on the first disc, one end of the oscillating bar is connected with the first disc boss, the other end of the oscillating bar is connected with the oscillating shaft, the oscillating shaft is transversely arranged on the mounting rack, one end of the oscillating shaft is mounted on the side wall of the mounting rack, the bearing is arranged at the end part of the oscillating shaft, and the other end of the oscillating shaft penetrates through the side wall of the mounting rack and is connected with the upper test piece; lower sample subassembly includes test piece clamping device, disc two, proof box, motor two, to drawing the screw rod, reducing nut, disc boss two and disc three down, the proof box is fixed on the mounting bracket, and the upper end is provided with disc two and is used for installing the clamping device of test piece down, motor two is fixed on the mounting bracket, motor two's pivot with disc three is connected, be provided with disc boss two on the disc three, to drawing the screw rod transversely to set up on the mounting bracket, one end be provided with lock nut and with disc boss two is connected, the other end with the proof box is connected.
Furthermore, a bolt is arranged on the oscillating bar and is connected with the first disc boss through the bolt; and the opposite-pulling screw rod is provided with a bolt and is connected with the second disc boss through the bolt.
Further, the oscillating shaft drives the upper test piece to rotate, and the positive and negative rotation angle is +/-30 degrees.
Furthermore, a stepped shaft is vertically arranged in the test box, a disc IV is arranged on the stepped shaft, a disc boss III is arranged on the disc IV, the counter-pulling screw rod is connected with the disc boss III, and the top of the stepped shaft is connected with the disc II and a clamping device for mounting a lower test piece.
Furthermore, the length of the counter-pulling screw rod is adjustable, and the stepped shaft is pushed by the counter-pulling screw rod, so that the second disk is driven to twist, and the twisting angle is +/-35 degrees.
Furthermore, a motor fixing frame is arranged on the mounting frame, and the second motor is fixedly connected with the motor fixing frame through a fixing bolt.
Further, the first motor and the second motor are stepping motors.
The invention has the advantages of simple structure, stable operation, adjustable movement mode, real-time measurement and recording of experiment parameters, long service life, capability of carrying out various combined designs according to actual experiment objects and requirements, capability of solving the experimental research on the friction and wear condition of materials in the rolling-sliding-torsion combined movement mode in the prior art, and the following advantages compared with the prior art:
1. the swing rod device can complete an angle-controllable experiment;
2. the double-swing-rod devices are matched with each other, so that relatively complex rolling, sliding and twisting motion can be realized;
3. the liquid holding device can realize wet friction movement under various temperature conditions in cooperation with the heating device.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a roll-slide-torsion test device based on a swing link mechanism;
FIG. 2 is a schematic view of the upper test piece swinging;
FIG. 3 is a schematic diagram of the structure within the test chamber;
in the figure, 1, a first motor, 2, a first disk boss, 3, a first disk, 4, a first bolt, 5, a swing rod, 6, a mounting rack, 7, an upper test piece, 8, a clamping device, 9, a second disk, 10, a test box, 11, a fixing bolt, 12, a second motor, 13, a split screw, 14, a lock nut, 15, a second disk boss, 16, a second bolt, 17, a swing shaft, 18, a bearing, 19, a stepped shaft, 20, a fourth disk, 21, a third disk boss, 22 and a motor fixing rack.
Detailed Description
In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
An embodiment, please refer to fig. 1-3, a rolling sliding torsion testing apparatus based on a swing link mechanism, includes a mounting frame 6, an upper end of the mounting frame 6 is a semi-sealed closed box structure, and an upper sample assembly and a lower sample assembly are arranged on the mounting frame 6, the upper sample assembly includes a motor 1, a disc boss 2, a disc 3, a swing link 5, an upper sample 7, a swing shaft 17 and a bearing 18, the motor 1 is arranged at an upper end of the mounting frame 6, a rotating shaft of the motor 1 is connected with the disc 3, the disc 3 is provided with the disc boss 2, one end of the swing link 5 is connected with the disc boss 2, the other end is connected with the swing shaft 17, the swing shaft 17 is transversely arranged on the mounting frame 6, one end is mounted on a side wall of the mounting frame 6, and an end portion is provided with the bearing 18, the other end of the test piece penetrates through the side wall of the mounting rack 6 and is connected with the upper test piece 7; lower sample subassembly includes test piece clamping device 8, two 9, proof box 10, two 12 motors, to drawing screw 13, reduce nut 14, two 15 and the disc three, proof box 10 fixes on mounting bracket 6, and the upper end is provided with two 9 discs and is used for installing clamping device 8 of test piece down, two 12 motors fix on mounting bracket 6, two 12 motors's pivot with three connections of disc, be provided with two 15 disc bosses on the disc three, to drawing screw 13 transversely to setting up on mounting bracket 6, one end be provided with lock nut 14 and with two 15 disc bosses are connected, the other end with proof box 10 is connected.
In the structure, a bolt I4 is arranged on the swing rod 5 and is connected with the disc boss I2 through the bolt I4; and a second bolt 16 is arranged on the opposite-pulling screw rod 13 and is connected with a second disk boss 15 through the second bolt 16.
A stepped shaft 19 is vertically arranged in the test box 10, a disc IV 20 is arranged on the stepped shaft 19, a disc boss III 21 is arranged on the disc IV 20, the counter-pulling screw 13 is connected with the disc boss III 21, and the top of the stepped shaft 19 is connected with the disc II 9 and a clamping device 8 for mounting a lower test piece.
It should be noted that the motor I1 provides a power source and transmits power to the swing rod 5 through the disc I3, and the swing rod 5 drives the transmission shaft 15 to move so as to enable the upper test piece 7 to move. The upper sample assembly realizes the forward and reverse rotation of the upper sample 7 by a swing guide mechanism, and the rotation angle is set to be +/-30 degrees (as shown in fig. 2, B1C1 and B2C2 are rotation tracks), so that the sliding characteristic can be simulated. The lower test piece is installed on the second disc 9 through the clamping device 8, the second motor 12 provides a power source and is transmitted to the stepped shaft 19 of the lower test piece through the opposite-pulling screw 13, the torsion motion of the lower test piece is achieved, the lower test piece assembly is designed to be a crank-rocker mechanism, the change of the torsion angle of the lower test piece can be achieved by changing the length of the opposite-pulling screw 13, the torsion of different angles of the knee joint can be achieved, and the torsion angle adjustable range is +/-35 degrees. The additional liquid holding device is adopted, and the heating device is matched to realize wet friction movement under various temperature conditions. The first motor 1 and the second motor 12 are preferably stepping motors.
It should be noted that a motor fixing frame 22 is arranged on the mounting frame 6, and the second motor 12 is fixedly connected with the motor fixing frame 22 through a fixing bolt 11.
The invention has the advantages that: when a motor in the upper sample assembly drives the disc to rotate, the oscillating bar is linked with the disc, and the oscillating bar can rotate and oscillate in a reciprocating manner within an interval of +/-30 degrees; sample spare that upper and lower sample clamping device can install different materials can realize dry, wet two kinds of friction forms according to the experiment purpose between the contact surface: when the upper motor acts independently, the contact surface realizes unidirectional reciprocating sliding; when a motor in the lower sample assembly acts alone, fixed-shaft fixed-angle reciprocating torsional motion is realized; when the two motors act simultaneously, the contact sample can realize a rolling-sliding-twisting composite contact state. The device can adjust the rotation angle and speed, and the torsion angle and speed, so as to realize different experimental parameter matching; the measuring device can display and record the contact force between the experimental pieces, the contact temperature and other related parameters in real time. The experiment machine is simple in structure, easy to operate, various in experiment functions, accurate in test and long in service life.
The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (7)
1. The rolling sliding torsion testing device based on the swing rod mechanism is characterized by comprising a mounting frame (6), wherein the upper end of the mounting frame (6) is of a semi-sealed closed box structure, an upper sample assembly and a lower sample assembly are arranged on the mounting frame (6), the upper sample assembly comprises a motor I (1), a disc boss I (2), a disc I (3), a swing rod (5), an upper test piece (7), a swing shaft (17) and a bearing (18), the motor I (1) is arranged at the upper end of the mounting frame (6), a rotating shaft of the motor I (1) is connected with the disc I (3), the disc boss I (2) is arranged on the disc I (3), one end of the swing rod (5) is connected with the disc boss I (2), the other end of the swing rod is connected with the swing shaft (17), the swing shaft (17) is transversely arranged on the mounting frame (6), one end of the test piece is arranged on the side wall of the mounting frame (6), the end part of the test piece is provided with the bearing (18), and the other end of the test piece penetrates through the side wall of the mounting frame (6) and is connected with the upper test piece (7); lower sample subassembly includes test piece clamping device (8), two (9) of disc, proof box (10), two (12) of motor, split screw (13), lock nut (14), two (15) of disc boss and disc three down, proof box (10) are fixed on mounting bracket (6), and the upper end is provided with clamping device (8) of two (9) of disc and test piece under being used for the installation, two (12) of motor are fixed on mounting bracket (6), the pivot of two (12) of motor with disc three is connected, be provided with two (15) of disc boss on the disc three, split screw (13) transversely sets up on mounting bracket (6), one end be provided with lock nut (14) and with two (15) of disc boss are connected, the other end with proof box (10) are connected.
2. The roll-slide-torsion testing device based on the swing rod mechanism is characterized in that a first bolt (4) is arranged on the swing rod (5) and is connected with a first disc boss (2) through the first bolt (4); and a second bolt (16) is arranged on the opposite-pulling screw rod (13) and is connected with a second disk boss (15) through the second bolt (16).
3. The roll-slide-torsion test device based on the swing link mechanism is characterized in that the swing shaft (17) drives the upper test piece (7) to rotate, and the positive and negative rotation angle is +/-30 degrees.
4. The roll-slide-torsion test device based on the swing rod mechanism is characterized in that a stepped shaft (19) is vertically arranged in the test box (10), a disc four (20) is arranged on the stepped shaft (19), a disc boss three (21) is arranged on the disc four (20), the opposite-pull screw (13) is connected with the disc boss three (21), and the top of the stepped shaft (19) is connected with the disc two (9) and a clamping device (8) for mounting a lower test piece.
5. The roll-slide-torsion testing device based on the swing link mechanism is characterized in that the length of the counter-pull screw (13) is adjustable, the stepped shaft (19) is pushed by the counter-pull screw (13) to drive the second disc (9) to twist, and the twisting angle is +/-35 degrees.
6. The roll-slide-torsion testing device based on the swing rod mechanism is characterized in that a motor fixing frame (22) is arranged on the mounting frame (6), and the second motor (12) is fixedly connected with the motor fixing frame (22) through a fixing bolt (11).
7. The roll-slide-torsion testing device based on the swing rod mechanism is characterized in that the first motor (1) and the second motor (12) are stepping motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068418.6A CN112903499B (en) | 2021-01-19 | 2021-01-19 | Rolling sliding torsion test device based on oscillating bar mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068418.6A CN112903499B (en) | 2021-01-19 | 2021-01-19 | Rolling sliding torsion test device based on oscillating bar mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112903499A CN112903499A (en) | 2021-06-04 |
| CN112903499B true CN112903499B (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110068418.6A Expired - Fee Related CN112903499B (en) | 2021-01-19 | 2021-01-19 | Rolling sliding torsion test device based on oscillating bar mechanism |
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| Country | Link |
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| CN (1) | CN112903499B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6865954B2 (en) * | 2003-03-10 | 2005-03-15 | Spinecore, Inc. | Joint simulator testing machine |
| CN101963563B (en) * | 2010-09-13 | 2012-06-13 | 西南交通大学 | Test device for torsional composite fretting friction wear test |
| US8549891B2 (en) * | 2010-10-27 | 2013-10-08 | Honda Motor Co., Ltd. | Scratch resistance test methods and apparatus |
| CN104181098B (en) * | 2014-09-11 | 2016-04-27 | 四川大学 | High/low temperature slide rolling friction performance experiment table |
| JP6481888B2 (en) * | 2015-01-08 | 2019-03-13 | 学校法人早稲田大学 | Attaching the biological tissue fixture |
| CN108267376B (en) * | 2017-12-15 | 2020-04-24 | 江苏师范大学 | Rolling-sliding-torsion experimental device |
| CN108827811B (en) * | 2018-06-14 | 2021-02-19 | 江苏师范大学 | Four-rod rolling sliding-twisting experimental device |
| CN108469392A (en) * | 2018-07-02 | 2018-08-31 | 江苏师范大学 | A kind of knee joint friction wear testing machine of temperature-controllable |
| CN209460079U (en) * | 2018-09-07 | 2019-10-01 | 南昌大学 | A kind of artificial ankle joint friction wear testing machine |
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2021
- 2021-01-19 CN CN202110068418.6A patent/CN112903499B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN112903499A (en) | 2021-06-04 |
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Granted publication date: 20220719 |