CN114659880A - Multi-motion mode artificial joint frictional wear experimental device - Google Patents
Multi-motion mode artificial joint frictional wear experimental device Download PDFInfo
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- CN114659880A CN114659880A CN202210393871.9A CN202210393871A CN114659880A CN 114659880 A CN114659880 A CN 114659880A CN 202210393871 A CN202210393871 A CN 202210393871A CN 114659880 A CN114659880 A CN 114659880A
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- 230000033001 locomotion Effects 0.000 claims abstract description 53
- 238000012360 testing method Methods 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 239000004570 mortar (masonry) Substances 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000002474 experimental method Methods 0.000 claims description 4
- 210000004394 hip joint Anatomy 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 210000000629 knee joint Anatomy 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 208000012659 Joint disease Diseases 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
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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
- G01N19/00—Investigating materials by mechanical methods
-
- 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
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- 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
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses a multi-motion mode artificial joint friction wear experimental device which comprises a rack, a joint buckling transmission module, a joint internal and external rotation micromotion module, a loading module and a control system, wherein the rack is provided with a plurality of support rods; the invention utilizes the characteristics of the crank and the rocker, and the length of the stepless speed regulation telescopic rod is used for regulating, so that the swing amplitude of the artificial joint is changed, and the friction and abrasion test of the artificial joint swinging at different angles in different motion modes is realized; the reciprocating motion is utilized to simulate the internal and external rotation motion, so that the interference of friction scratches caused by the whole-circle motion on the joint ball test piece is avoided; the connector in the fixing device is utilized to achieve the switching between single motion and synthetic motion, and the stable operation can still be ensured after the switching; the functions are coupled in a synergistic manner, so that the friction and wear working condition of the artificial joint can be effectively tested, the capability of testing the friction and wear of different joint parts and different motion modes of the artificial joint is improved, and a synthetic motion test and a single motion test are effectively carried out.
Description
Technical Field
The invention relates to the field of artificial joints, in particular to a friction and wear testing device which can be used for carrying out multi-motion-mode friction and wear experimental tests on artificial hips and knee joints.
Background
Since the introduction of the artificial joint technology, the artificial joint is widely applied, thereby bringing good news to patients with the joint diseases and relieving the pain of the patients. But at the same time brings about technical problems. The existing types of artificial joint simulation testing machines are more, wherein the swing shaft type simulates the swing motion of a hip joint on three planes by means of the relative motion between a base and an inclined base, but the swing angles of the testing machines in all directions are different and the testing machines cannot perform synthetic motion; the multi-axis type swing angle is controlled by different shafting, so that different angle adjustment can be carried out, but the multi-axis type swing angle also causes the mechanism design to be complex, thereby increasing a plurality of additional factors and causing the experiment accuracy to be reduced; the pin-disc type experiment machine can better analyze the frictional wear performance of a test sample, but can not achieve the motion synthesis and can not test the maximum damage of the motion to the artificial joint. Therefore, an artificial joint friction and wear experimental device is needed at present, which can perform synthetic motion, measure the friction and wear of a single motion mode and reduce the interference of other factors caused by too many shafting. The existing friction and wear testing machine only performs experimental tests on a single joint and cannot test friction and wear of different parts such as knee joints, hip joints and the like.
Disclosure of Invention
In order to solve the prior technical problems, the invention aims to provide a multi-motion mode frictional wear experimental device, a joint flexion transmission module of the device can simulate the flexion of the sagittal plane and the abduction and adduction of the coronal plane of an artificial joint; the joint internal and external rotation micromotion module can simulate the rotation of the cross section of the artificial joint; the loading module adjusts the movement mode of the device and switches between multiple movements or single movement; all the large modules are coupled in a coordinated mode, and the friction and wear test of the artificial joint in a multi-motion mode can be realized. The method can test the most serious friction and wear mode in a single motion mode and can also measure the friction and wear conditions in multiple motion modes. The test device can test the friction and wear conditions at different angles and under different stress sizes, has extremely strong comprehensive performance, and provides reliable experimental data for the friction and wear test of the artificial joint. Meanwhile, the abrasion condition of the device is observed, the friction condition of the device is explored under different lubricating conditions, and the friction experiment performed in multiple motion modes is more scientific and practical.
In order to achieve the purpose, the design idea of the invention is as follows:
the utility model provides a many motion modes artificial joint friction wear experimental apparatus which characterized in that: the device comprises a rack (E), a joint buckling transmission module (A), a joint internal and external rotation micro-motion module (C), a loading module (B) and a control system (D);
the joint buckling transmission module is composed of a stepping motor (A-1), a stepless speed regulation telescopic rod (A-2), a connecting rod (A-3), a support rail (A-4), a joint ball head test piece (A-5) and a pneumatic cylinder (A-6), the components form a crank rocker mechanism, the stepless speed regulation telescopic rod (A-2) transmits the power of the stepping motor (A-1) to the connecting rod (A-3), and the connecting rod (A-3) drives the pneumatic cylinder (A-6) to swing along the support rail (A-4) so as to realize a joint buckling motion mode;
the joint internal and external rotation micro-motion module is composed of a mortar cup (C-1), a clamping plate (C-2), a mortar cup supporting table (C-3), a thrust bearing (C-4), a transmission shaft (C-5), a rotary platform reducer (C-6) and a variable speed motor (C-7), wherein the clamping plate (C-2) is connected with the mortar cup supporting table (C-3) through bolts, the position of the bolts is adjusted, the clamping plate (C-2) is moved, mortar cups (C-1) with different specifications can be replaced, the variable speed motor (C-7) is connected with the rotary platform reducer (C-6), power is output to the transmission shaft (C-5), the mortar cup supporting table (C-3) is driven to perform reciprocating micro-motion, and an internal and external rotation motion mode of the joint is realized;
the loading module is composed of a fixing device (B-1), a connector (B-2) and a pressure sensor (B-3), the pressure sensor (B-3) is installed on the side face of the pneumatic cylinder (A-6), the connector (B-2) is arranged in the fixing device (B-1), when only the internal and external rotation motion of the artificial joint is simulated, the connector (B-1) can be connected with the pneumatic cylinder (A-6) to fix the pneumatic cylinder (A-6), when only the buckling motion of the artificial joint or the buckling motion and the internal and external rotation combined motion of the artificial joint is simulated, the connector (B-2) is separated from the pneumatic cylinder (A-6), and the pneumatic cylinder (A-6) can swing to realize the switching of multiple motion modes;
the control system comprises a console (D-1), a temperature control box (D-2) and an illuminating lamp (D-3), wherein the temperature control box (D-2) provides working environment temperature for the artificial joint, the illuminating lamp (D-3) provides illumination for observation, and the console (D-1) is cooperated with a control circuit and controls the operation of the whole equipment;
the artificial joint friction wear experimental device under the multi-motion mode is characterized in that: the length of the connecting rod (A-3) is 165mm, the telescopic range of the stepless speed regulation telescopic rod (A-2) is 35-80 mm, and the swing range of the pneumatic cylinder (A-6) is 0-110 degrees, so that friction and wear experimental tests when the artificial joint swings at different angles are realized.
The artificial joint friction wear experimental device under the multi-motion mode is characterized in that: the diameter range of the joint ball head test piece (A-5) is 18-28 mm, and the joint ball head test piece is used for simulating joints of different parts of a body and adjusting the pressure of the pneumatic cylinder (A-6), so that the friction and wear test of the artificial joint under different load pressures is realized.
The artificial joint friction wear experimental device under the multi-motion mode is characterized in that: the support rail (A-4) can limit the sliding track of the pneumatic cylinder (A-6), guarantee that pressure can be transmitted to the joint ball test piece (A-5), angle scales are arranged on the support rail (A-4), and when the pneumatic cylinder (A-6) swings, the support rail (A-4) can correspondingly display angles.
The artificial joint friction wear experimental device under the multi-motion mode is characterized in that: the variable speed motor (C-7) can adjust the micro-motion frequency and amplitude, thereby simulating the internal and external rotation of the hip joint at 0-60 degrees and simulating the internal and external rotation of the knee joint at 0-5 degrees.
Compared with the prior art, the invention has the advantages that: the device can be used for friction and wear test of different joint parts; the device can be used for friction and wear experimental tests in a multi-motion mode, and motion simulation of the coronal plane, the sagittal plane and the cross section of the artificial joint is realized; the device can simulate the friction and wear condition of the cross section within a certain angle, and compared with the whole-circle rotation, the device can simulate the motion condition of the artificial joint more truly; the function cooperation coupling can test the friction and wear condition of a single motion mode to the artificial joint, and can perform motion synthesis on buckling, internal and external rotation and extension to test the friction and wear condition under a multi-motion mode, so that the friction and wear condition of different joints can be tested, the application range is wider, and the universality is strong.
Drawings
FIG. 1 is a schematic structural diagram of an artificial joint frictional wear experimental device in a multi-motion mode
FIG. 2 is a schematic structural diagram of a joint flexion transmission module
FIG. 3 is a schematic view of the structure of the retractable rod
FIG. 4 is a schematic view of the structure of the joint internal and external rotation micromotion module
FIG. 5 is a schematic view of the structure of the cup support platform and the clamping device
FIG. 6 is a schematic view of the fixing device and the connector
Labeled as: a-1 variable speed motor; a-2, a stepless speed regulation telescopic rod; a-3 connecting rod; a-4, supporting a rail; a-5, a joint ball test piece; a-6 pneumatic cylinder; b-1, a fixing device; a B-2 connector; b-3, a pressure sensor; c-1 mortar cup; c-2, clamping a plate; c-3 mortar cup supporting platform; a C-4 thrust bearing; a C-5 transmission shaft; c-6 rotating platform reducer; a C-7 variable speed motor; a D-1 console; d-2, a temperature control box; a D-3 illuminating lamp; and E, a frame.
Detailed Description
According to the above inventive concept, the present invention adopts the following embodiments:
an artificial joint friction and wear experimental device in a multi-motion mode is shown in figure 1 and comprises a rack (E), a joint buckling transmission module (A), a joint internal and external rotation micromotion module (C), a loading module (B) and a control system (D);
the joint buckling transmission module (A) is shown in figure 2 and comprises a stepping motor (A-1), a stepless speed regulation telescopic rod (A-2), a connecting rod (A-3), a supporting track (A-4), a joint ball head test piece (A-5) and a pneumatic cylinder (A-6), the components can form a crank and rocker mechanism, the stepping motor (A-1) rotates in a whole circle, power is transmitted to the connecting rod (A-3) through the stepless speed regulation telescopic rod (A-2), the connecting rod (A-3) drives the whole pneumatic cylinder (A-6) to swing, the position of a piston rod is adjusted, the joint ball head test pieces (A-5) with different specifications can be replaced, and buckling motion simulation of the joint ball head test piece is achieved.
The joint internal and external rotation micromotion module (C) is composed of a mortar cup (C-1), a clamping plate (C-2), a mortar cup supporting table (C-3), a thrust bearing (C-4), a transmission shaft (C-5), a rotary platform reducer (C-6) and a variable speed motor (C-7), wherein the variable speed motor (C-7) is connected with the rotary platform reducer (C-6) to drive the transmission shaft (C-5) and the mortar cup supporting table (C-3) to perform reciprocating micromotion, as shown in figure 5, the mortar cup (C-1) is fixed by the clamping plate (C-2), and the internal and external rotation motion simulation of the artificial joint is realized.
The loading module is composed of a fixing device (B-1), a connector (B-2) and a pressure sensor (B-3), the pressure sensor (B-3) is installed on the side face of the pneumatic cylinder (A-6), as shown in fig. 6, the connector (B-2) is arranged in the fixing device (B-1), when only the internal and external rotation motions of the artificial joint are simulated, the connector (B-1) can be connected with the pneumatic cylinder (A-6) to fix the pneumatic cylinder (A-6), when only the flexion motion of the artificial joint or the flexion motion and the internal and external rotation motions of the artificial joint are simulated, the connector (B-2) is separated from the pneumatic cylinder (A-6), and the pneumatic cylinder (A-6) can swing, so that the switching of multiple motion modes is realized;
the control system comprises a control console (D-1), a temperature control box (D-2) and an illuminating lamp (D-3), wherein the temperature control box (D-2) provides working environment temperature for the artificial joint, the control console (D-1) is cooperated with a control circuit to control the operation of the whole equipment, and the control system comprises reciprocating micro-motion control of a variable speed motor (C-7) in the joint internal and external rotation micro-motion module (C) and length adjustment of a stepless speed regulation telescopic rod (A-2) in the joint flexion transmission module (A).
The present invention is not limited to the above embodiments, and any technical solutions similar or identical to the present invention, which are made in the light of the present invention, are within the scope of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (5)
1. The utility model provides a many motion modes artificial joint friction wear experimental apparatus which characterized in that: the device comprises a rack (E), a joint buckling transmission module (A), a joint internal and external rotation micro-motion module (C), a loading module (B) and a control system (D);
the joint buckling transmission module is composed of a stepping motor (A-1), a stepless speed regulation telescopic rod (A-2), a connecting rod (A-3), a support rail (A-4), a joint ball head test piece (A-5) and a pneumatic cylinder (A-6), the components form a crank rocker mechanism, the stepless speed regulation telescopic rod (A-2) transmits the power of the stepping motor (A-1) to the connecting rod (A-3), and the connecting rod (A-3) drives the pneumatic cylinder (A-6) to swing along the support rail (A-4) so as to realize a joint buckling motion mode;
the joint internal and external rotation micromotion module is composed of a mortar cup (C-1), a clamping plate (C-2), a mortar cup supporting table (C-3), a thrust bearing (C-4), a transmission shaft (C-5), a rotary platform reducer (C-6) and a variable speed motor (C-7), wherein the clamping plate (C-2) is connected with the mortar cup supporting table (C-3) through bolts, the position of the bolts is adjusted, the clamping plate (C-2) is moved, mortar cups (C-1) with different specifications can be replaced, the variable speed motor (C-7) is connected with the rotary platform reducer (C-6), power is output to the transmission shaft (C-5), the mortar cup supporting table (C-3) is driven to perform reciprocating micromotion, and an internal and external rotation motion mode of the joint is realized;
the loading module is composed of a fixing device (B-1), a connector (B-2) and a pressure sensor (B-3), the pressure sensor (B-3) is installed on the side face of the pneumatic cylinder (A-6), the connector (B-2) is arranged in the fixing device (B-1), when only the internal and external rotation motion of the artificial joint is simulated, the connector (B-1) can be connected with the pneumatic cylinder (A-6) to fix the pneumatic cylinder (A-6), when only the buckling motion of the artificial joint or the buckling motion and the internal and external rotation combined motion of the artificial joint is simulated, the connector (B-2) is separated from the pneumatic cylinder (A-6), and the pneumatic cylinder (A-6) can swing to realize the switching of multiple motion modes;
the control system comprises a console (D-1), a temperature control box (D-2) and an illuminating lamp (D-3), wherein the temperature control box (D-2) provides working environment temperature for the artificial joint, the illuminating lamp (D-3) provides illumination for observation, and the console (D-1) is cooperated with a control circuit and controls the operation of the whole equipment;
the joint flexion transmission module can simulate the flexion of the sagittal plane of the artificial joint and the abduction and adduction of the coronal plane; the joint internal and external rotation micromotion module can simulate the rotation of the cross section of the artificial joint; the two modules are coupled in a cooperative manner, so that the friction and wear test of the artificial joint in a multi-motion mode can be realized.
2. The device for testing frictional wear of the artificial joint in the multiple movement modes as claimed in claim 1, wherein: the length of the connecting rod (A-3) is 165mm, the telescopic range of the stepless speed regulation telescopic rod (A-2) is 35-80 mm, and the swing amplitude range of the pneumatic cylinder (A-6) is 0-110 degrees, so that friction and wear test tests when the artificial joint swings at different angles are realized.
3. The device for testing frictional wear of the artificial joint in the multiple movement modes as claimed in claim 1, wherein: the diameter range of the joint ball head test piece (A-5) is 18-28 mm, and the joint ball head test piece is used for simulating joints of different parts of a body and adjusting the pressure of the pneumatic cylinder (A-6), so that the friction and wear test of the artificial joint under different load pressures is realized.
4. The device for testing frictional wear of the artificial joint in the multiple movement modes as claimed in claim 1, wherein: the support rail (A-4) can limit the sliding track of the pneumatic cylinder (A-6), guarantee that pressure can be transmitted to the joint ball test piece (A-5), angle scales are arranged on the support rail (A-4), and when the pneumatic cylinder (A-6) swings, the support rail (A-4) can correspondingly display angles.
5. The device for testing frictional wear of the artificial joint in the multiple movement modes as claimed in claim 1, wherein: the variable speed motor (C-7) can adjust the micro-motion frequency and amplitude, so that the internal and external rotation of the hip joint at 0-60 degrees and the internal and external rotation of the knee joint at 0-5 degrees can be simulated, and the test of the rotary friction and wear experiment of different parts of the artificial joint can be realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210393871.9A CN114659880B (en) | 2022-04-14 | 2022-04-14 | Multi-motion mode artificial joint friction and wear experimental device |
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| CN202210393871.9A CN114659880B (en) | 2022-04-14 | 2022-04-14 | Multi-motion mode artificial joint friction and wear experimental device |
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| CN114659880A true CN114659880A (en) | 2022-06-24 |
| CN114659880B CN114659880B (en) | 2024-04-12 |
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| JP2002286608A (en) * | 2001-03-26 | 2002-10-03 | Tokyo Seimitsu Sokki Kk | Friction and wear testing machine for artificial joint |
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| KR20100006384A (en) * | 2008-07-09 | 2010-01-19 | 대한민국 (식품의약품안전청장) | Apparatus for providing angle movement and hip joint simulator using the same |
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2022
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| JP2002286608A (en) * | 2001-03-26 | 2002-10-03 | Tokyo Seimitsu Sokki Kk | Friction and wear testing machine for artificial joint |
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| CN114659880B (en) | 2024-04-12 |
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