CN213689332U

CN213689332U - Structure fretting corrosion measuring equipment for testing long-term reciprocating motion

Info

Publication number: CN213689332U
Application number: CN202022728783.9U
Authority: CN
Inventors: 郭子学; 张草; 刘宏亮
Original assignee: Beijing Hongkangruida Medical Technology Co ltd
Current assignee: Liu Hongliang
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-13
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a test long-term reciprocating motion's structure fine motion corrodes measuring equipment, including workstation, installation base, upright bucket, bearing fixed plate, motor, drive cam, camshaft, control panel and transmission, the installation base is located on the workstation, it locates on the installation base to found the bucket, the bearing fixed plate is located and is found on the bucket lateral wall, the workstation is equipped with the drive and deposits the chamber, the motor is located the drive and deposits the intracavity, camshaft one end is rotated and is located on the installation base, the camshaft runs through the installation base and links to each other with motor output shaft, drive cam locates on the camshaft, control panel locates on the workstation lateral wall, transmission locates bearing fixed plate bottom. The utility model relates to a tester technical field specifically provides a can have easy operation, can quantify, can the constant speed, decide circulation, workable and the long-term reciprocating motion's of test structure fine motion corrosion measurement equipment of change.

Description

Structure fretting corrosion measuring equipment for testing long-term reciprocating motion

Technical Field

The utility model relates to a tester technical field specifically is a test long-term reciprocating motion's structure fine motion corrodes measuring equipment.

Background

The bone fracture plate and bone screw are important medical instruments in orthopedics medical implant series, and the aims of restoration and fixation are achieved by connecting and fixing the broken ends of the fracture according to the shape of the human skeleton. After the bone screw and the bone plate are implanted into a human body, the metal interface between the bone screw and the bone plate is corroded due to micromotion except bearing working load; the state has strict regulations on bone plates and bone screws, including appearance size, service performance, physical and chemical properties, hygienic indexes and the like. The quality of the bone plates and bone screws determines the ease of operation for the surgeon and the safety of the patient. At present, most of the bone fracture plates and bone screws in the market are measured singly and cannot accurately simulate the abrasion generated when the bone fracture plates and the bone screws are used in a matching way in a human body.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned condition, for overcoming current technical defect, the utility model provides a can have easy operation, can quantify, can the constant speed, decide circulation, workable and the long-term reciprocating motion's of test structure fine motion corrosion measurement equipment of easy change.

The utility model adopts the following technical scheme: the utility model relates to a test long-term reciprocating motion's structure fine motion corrodes measuring equipment, including workstation, installation base, upright bucket, bearing fixed plate, motor, drive cam, camshaft, control panel and transmission, the installation base is located on the workstation, upright bucket locates on the installation base, the bearing fixed plate locates on the upright bucket lateral wall, be equipped with the drive hole in the upright bucket, the workstation is equipped with the drive and deposits the chamber, the motor is located the drive and deposits the intracavity, camshaft one end is rotated and is located on the installation base, the camshaft is located the drive and deposits the intracavity, the camshaft runs through the installation base and links to each other with the motor output shaft, the drive cam is located on the camshaft, control panel locates on the workstation lateral wall, transmission locates bearing fixed plate bottom, motor and control panel electrical control; the transmission device comprises a bearing seat, a transmission rod, a shaft pin, a rolling bearing, a sliding bearing, a shaft sleeve, a spring, a retainer ring, an outer plastic rod, an inner plastic rod, a bone fracture plate and a bone screw, wherein the bearing seat is arranged at the bottom of a bearing fixing plate, the sliding bearing is arranged at one side, close to a driving hole, of an inner ring of the bearing seat, the shaft sleeve is arranged in the inner ring of the bearing seat in a sliding manner, the shaft sleeve is arranged on the transmission rod, the retainer ring is arranged at the other side of the inner ring of the bearing seat, one end of the spring is arranged on the retainer ring, the spring is positioned in the inner ring of the bearing seat, the other end of the spring is arranged on the shaft sleeve, the transmission rod is sequentially arranged in the sliding bearing and the retainer ring in, the wear of the camshaft and the transmission rod can be effectively reduced through the transition of the rolling bearing, so that the service life of the equipment is prolonged; the end of the transmission rod, which is far away from the driving hole, is provided with an internal threaded hole, the two ends of the internal plastic rod are respectively provided with a first upper end threaded hole and a first lower end threaded hole, an internal screw is connected between the first upper end threaded hole and the internal threaded hole, the transmission rod and the internal plastic rod are tightly connected through the internal screw, the bearing fixing plate is provided with a tightening chute, the two ends of the external plastic rod are respectively provided with a second upper end threaded hole and a second lower end threaded hole, an external screw is connected between the tightening chute and the second upper end threaded hole, the bearing fixing plate and the external plastic rod are tightly connected through the external screw, the bone screws are provided with two groups, the two groups of bone screws are respectively external bone screws and internal bone screws, the external bone screws are connected in the second lower end threaded hole through threads, and the bone fracture plate is connected on the external bone screws, the bone fracture plate and the outer plastic rod are fastened and connected through an outer bone fracture screw, the inner bone fracture screw is connected in a threaded hole at the first lower end through threads, the bone fracture plate is connected in a threaded hole at the inner bone fracture screw, and the bone fracture plate and the inner plastic rod are fastened and connected through the inner bone fracture screw; the drive cam is arranged in a regular hexagon structure, the bearing fixing plate and the transmission device are arranged corresponding to six side walls of the drive cam, a plurality of groups of bone fracture plates and bone screws can be tested simultaneously, and the reciprocating deviation of 2 degrees of the internal plastic rod is realized through different contact positions of the drive cam and the rolling bearing, so that the bone screws generate micro motion.

Further, the vertical barrel is arranged in a regular hexagon structure.

Furthermore, a beaker is arranged on the mounting base and is positioned below the bone fracture plate and the bone screws.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: this scheme a test long-term reciprocating motion's structure fretting corrosion measuring equipment realizes reciprocating vibration friction between coaptation board and the bone screw through motor and transmission cooperation to detect the degree of wear that the friction produced between coaptation board and the bone screw, so that predict coaptation board and bone screw cooperation life, through multiunit transmission simultaneous working, can save time, improve work efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the micro-motion corrosion measuring device of the present invention for testing long-term reciprocating motion;

FIG. 2 is a schematic view of the top view of the structural fretting corrosion measuring device of the present invention for testing long-term reciprocating motion;

FIG. 3 is a schematic structural view of a transmission device of a structural fretting corrosion measuring apparatus for testing long-term reciprocating motion according to the present invention;

fig. 4 is a partially enlarged view of a portion a of fig. 3.

The automatic bone setting machine comprises a working table 1, a working table 2, an installation base 3, a vertical barrel 4, a bearing fixing plate 5, a motor 6, a driving cam 7, a cam shaft 8, a control panel 9, a transmission device 10, a bearing seat 11, a transmission rod 12, a shaft pin 13, a rolling bearing 14, a sliding bearing 15, a shaft sleeve 16, a spring 17, a retainer ring 18, an outer plastic rod 19, an inner plastic rod 20, a bone fracture plate 21, an outer bone screw 22, a driving hole 23, an inner screw 24, a fastening chute 25, an outer screw 26, an inner bone screw 27 and a beaker.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-4, the technical scheme adopted by the utility model is as follows: a structure micro-motion corrosion measuring device for testing long-term reciprocating motion comprises a workbench 1, an installation base 2, a vertical barrel 3, a bearing fixing plate 4, a motor 5, a driving cam 6, a cam shaft 7, a control panel 8 and a transmission device 9, wherein the installation base 2 is arranged on the workbench 1, the vertical barrel 3 is arranged on the installation base 2, the bearing fixing plate 4 is arranged on the side wall of the vertical barrel 3, a driving hole 22 is arranged in the vertical barrel 3, the workbench 1 is provided with a driving storage cavity, the motor 5 is arranged in the driving storage cavity, one end of the cam shaft 7 is rotatably arranged on the installation base 2, the cam shaft 7 is positioned in the driving storage cavity, the cam shaft 7 penetrates through the installation base 2 to be connected with an output shaft of the motor 5, the driving cam 6 is arranged on the cam shaft 7, the control panel 8 is arranged on the side wall of the workbench 1, the transmission device 9 is arranged, the motor 5 is electrically controlled by the control panel 8; the transmission device 9 comprises a bearing seat 10, a transmission rod 11, a shaft pin 12, a rolling bearing 13, a sliding bearing 14, a shaft sleeve 15, a spring 16, a retainer ring 17, an outer plastic rod 18, an inner plastic rod 19, a bone fracture plate 20 and bone screws, wherein the bearing seat 10 is arranged at the bottom of a bearing fixing plate 4, the sliding bearing 14 is arranged at one side, close to a driving hole 22, of an inner ring of the bearing seat 10, the shaft sleeve 15 is arranged in the inner ring of the bearing seat 10 in a sliding manner, the shaft sleeve 15 is arranged on the transmission rod 11, the retainer ring 17 is arranged at the other side of the inner ring of the bearing seat 10, one end of the spring 16 is arranged on the retainer ring 17, the spring 16 is arranged in the inner ring of the bearing seat 10, the other end of the spring 16 is arranged on the shaft sleeve 15, the transmission rod 11 is sequentially arranged in, the rolling bearing 13 is rotatably arranged at one end of the transmission rod 11, the rolling bearing 13 is slidably arranged on the side wall of the driving cam 6, and the abrasion between the camshaft 7 and the transmission rod 11 can be effectively reduced through the transition of the rolling bearing 13, so that the service life of the equipment is prolonged; one end of the transmission rod 11, which is far away from the driving hole 22, is provided with an internal threaded hole, two ends of the internal plastic rod 19 are respectively provided with a first upper end threaded hole and a first lower end threaded hole, an internal screw 23 is connected between the first upper end threaded hole and the internal threaded hole, the transmission rod 11 and the internal plastic rod 19 are fastened and connected through the internal screw 23, the bearing fixing plate 4 is provided with a fastening sliding groove 24, two ends of the external plastic rod 18 are respectively provided with a second upper end threaded hole and a second lower end threaded hole, an external screw 25 is connected between the fastening sliding groove 24 and the second upper end threaded hole, the bearing fixing plate 4 and the external plastic rod 18 are fastened and connected through the external screw 25, the bone screws are provided with two groups, the two groups of bone screws are respectively an external bone screw 21 and an internal bone screw 26, the external bone screw 21 is connected and arranged in the second, the bone plate 20 is arranged on the outer side bone screw 21 in a threaded connection mode, the bone plate 20 is fixedly connected with the outer side plastic rod 18 through the outer side bone screw 21 in a fastening mode, the inner bone screw 26 is arranged in the first lower end threaded hole in a threaded connection mode, the bone plate 20 is arranged on the inner bone screw 26 in a threaded connection mode, and the bone plate 20 is fixedly connected with the inner plastic rod 19 through the inner bone screw 26 in a fastening mode; the drive cam 6 is arranged in a regular hexagon structure, the bearing fixing plate 4 and the transmission device 9 are arranged corresponding to six side walls of the drive cam 6, a plurality of groups of bone fracture plates 20 and bone screws can be tested simultaneously, and reciprocating deviation of 2 degrees of the internal plastic rods is realized through different contact positions of the drive cam 6 and the rolling bearing 13, so that the bone screws generate micro motion.

Wherein, the upright barrel 3 is arranged in a regular hexagon structure. A beaker 27 is arranged on the mounting base 2, and the beaker 27 is positioned below the bone plate 20 and the bone screws. The driving cam 6 is arranged in a regular hexagon structure.

When the bone fracture plate is used, the bone fracture plate 20 is fixedly connected with the outer plastic rod 18 and the inner plastic rod 19 respectively through the outer side bone screws 21 and the inner bone screws 26 by using a torque wrench, the torque force of the bone fracture plate is ensured to generate 400N pressure at the interface of the screws and the bone fracture plate 20, the transmission rod 11 and the inner plastic rod 19 are fixedly connected through the inner screws 23 by using the torque wrench, the position of the outer screws 25 in the fastening sliding grooves 24 is adjusted according to the length of the bone fracture plate 20, the outer plastic rod 18 and the bearing fixing plate 4 are fixedly connected through the outer screws 25 by using the torque wrench, the six groups of transmission devices 9 are installed in the same mode, the bone fracture plate 20 and the bone screws are placed in a solution in the beaker 27, and the plastic rods are ensured to keep a distance of more than; starting the motor 5, controlling the rotating speed of the motor 5 by using a control board, setting the rotating speed of the motor 5 to be 60 degrees/S, driving the cam shaft 7 by the rotation of the motor 5 so as to drive the driving cam 6 to rotate, applying reciprocating motion to the rolling bearings 13 uniformly distributed on the circumference of the driving cam 6 so as to enable the transmission rod 11 to reciprocate, realizing the reciprocating offset of 2 degrees of the inner plastic rod through different contact positions of the driving cam 6 and the rolling bearings 13, enabling the inner plastic rod 19 to generate angular motion with the outer plastic rod 18 every second, causing the mutual friction between the bone fracture plate 20 and the bone screws, setting the cycle number to be 100 ten thousand, automatically stopping the motor 5 after 100 ten thousand cycles, removing the beaker 27 at the moment, carefully disassembling the bone fracture plate 20 and the bone screws, observing, judging the abrasion and corrosion degrees between the bone fracture plate 20 and the bone screws, driving the cam 6 to drive a plurality of groups of transmission, time can be saved, and working efficiency is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a test long-term reciprocating motion's structure fretting corrosion measuring equipment which characterized in that: the device comprises a workbench, an installation base, a vertical barrel, a bearing fixing plate, a motor, a driving cam, a cam shaft, a control panel and a transmission device, wherein the installation base is arranged on the workbench, the vertical barrel is arranged on the installation base, the bearing fixing plate is arranged on the side wall of the vertical barrel, a driving hole is formed in the vertical barrel, the workbench is provided with a driving storage cavity, the motor is arranged in the driving storage cavity, one end of the cam shaft is rotatably arranged on the installation base, the cam shaft is positioned in the driving storage cavity, the cam shaft penetrates through the installation base and is connected with a motor output shaft, the driving cam is arranged on the cam shaft, the control panel is arranged on the side wall of the workbench, the transmission device is arranged at the bottom of the bearing fixing plate; the transmission device comprises a bearing seat, a transmission rod, a shaft pin, a rolling bearing, a sliding bearing, a shaft sleeve, a spring, a retainer ring, an outer plastic rod, an inner plastic rod, a bone fracture plate and a bone screw, the bearing seat is arranged at the bottom of the bearing fixing plate, the sliding bearing is arranged at one side of the inner ring of the bearing seat close to the driving hole, the shaft sleeve is arranged in the inner ring of the bearing seat in a sliding manner, the shaft sleeve is arranged on the transmission rod, the check ring is arranged on the other side of the inner ring of the bearing seat, one end of the spring is arranged on the retaining ring, the spring is positioned in the inner ring of the bearing seat, the other end of the spring is arranged on the shaft sleeve, the transmission rod is sequentially arranged in the sliding bearing and the retainer ring in a penetrating way, the shaft pin is arranged at one end of the transmission rod in the driving hole in a penetrating way, the rolling bearing is arranged on the shaft pin, the rolling bearing is rotatably arranged at one end of the transmission rod, and the rolling bearing is slidably arranged on the side wall of the driving cam; the end of the transmission rod, which is far away from the driving hole, is provided with an internal threaded hole, the two ends of the internal plastic rod are respectively provided with a first upper end threaded hole and a first lower end threaded hole, an internal screw is connected between the first upper end threaded hole and the internal threaded hole, the transmission rod and the internal plastic rod are tightly connected through the internal screw, the bearing fixing plate is provided with a tightening chute, the two ends of the external plastic rod are respectively provided with a second upper end threaded hole and a second lower end threaded hole, an external screw is connected between the tightening chute and the second upper end threaded hole, the bearing fixing plate and the external plastic rod are tightly connected through the external screw, the bone screws are provided with two groups, the two groups of bone screws are respectively external bone screws and internal bone screws, the external bone screws are connected in the second lower end threaded hole through threads, and the bone fracture plate is connected on the external bone screws, the bone fracture plate and the outer plastic rod are fastened and connected through an outer bone fracture screw, the inner bone fracture screw is connected in a threaded hole at the first lower end through threads, the bone fracture plate is connected in a threaded hole at the inner bone fracture screw, and the bone fracture plate and the inner plastic rod are fastened and connected through the inner bone fracture screw; the drive cam is in a regular hexagon structure, and the bearing fixing plate and the transmission device are arranged corresponding to six side walls of the drive cam.

2. The apparatus for testing long-term reciprocating structural fretting corrosion measurement according to claim 1, wherein: the vertical barrel is arranged in a regular hexagon structure.

3. The apparatus for testing long-term reciprocating structural fretting corrosion measurement according to claim 1, wherein: the mounting base is provided with a beaker which is positioned below the bone fracture plate and the bone screw.