Photoelectric encoder testing device

Abstract

The utility model discloses a photoelectric encoder testing device, which belongs to the technical field of equipment detection and comprises a testing host. The testing host is provided with a bottom plate. A straight plate is arranged at the top of the bottom plate; a driving assembly is mounted in the straight plate close to the test host; the other two groups of straight plates are provided with synchronous locking assemblies, and are in fit contact with the photoelectric encoder; the synchronous locking assembly comprises a translation assembly, a crimping assembly and a lock rod. The lock rod is fixedly installed on the side wall, away from the driving assembly, of the straight plate making contact with the photoelectric encoder. And elastic connecting assemblies are arranged between the two groups of photoelectric encoders and between the photoelectric encoder close to the driving assembly and the driving assembly. Through the above mode, the two groups of photoelectric encoders can be conveniently and rapidly installed on the straight plate, batch detection is realized at the same time, the detection efficiency is high, the consistency between the two groups of photoelectric encoders is detected at the same time, and the two groups of photoelectric encoders can be used in an application scene that the two groups of photoelectric encoders are coaxially arranged when the consistency is detected.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment detection, in particular to a photoelectric encoder testing device. Background Art

[0002] Photoelectric encoders are widely used in rail vehicle driver controllers to collect position signals from the driver controller handle and convert the position signals into digital electrical signals for controlling the traction and braking of the vehicle. Photoelectric encoders need to be tested after production.

[0003] For example, Chinese patent CN206627093U discloses an angle meter detection device, including: a base plate, a bracket, an inclination sensor, a height adjuster, a fixed plate, a photoelectric encoder, an instrument and an angle meter to be measured; the lower surface of the base plate is connected to a plurality of height adjusters; the bracket is vertically welded to the upper surface of the base plate; the inclination sensor is connected to the upper surface of the base plate; the photoelectric encoder is vertically connected to the middle of the first surface of the fixed plate, and the photoelectric encoder and the fixed plate are fixed on the bracket and can maintain a constant distance from the base plate for rotational movement, wherein the fixed plate is perpendicular to the base plate; the middle of the second surface of the fixed plate is connected to the angle meter to be measured; the photoelectric encoder and the inclination sensor are respectively connected to the instrument for communication; the angle meter to be measured is connected to the instrument line. By leveling the entire detection device before detecting the measurement accuracy of the angle meter, the entire device is in a horizontal state, and the stability of the center of gravity of the measuring device is ensured, thereby improving the accuracy of the measurement accuracy of the angle meter.

[0004] However, the above structure can only detect one set of photoelectric encoders at a time, and the detection efficiency is low. At the same time, the rail vehicle driver controller generally uses two sets of photoelectric encoders at the same time. After the individual photoelectric encoders are detected and then assembled, the consistency of the two sets of photoelectric encoders cannot be guaranteed.

[0005] Based on this, the utility model designs a photoelectric encoder testing device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a photoelectric encoder testing device.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A photoelectric encoder testing device comprises a testing host;

[0009] A bottom plate is provided on one side of the test host;

[0010] Three sets of identical straight boards are fixedly connected at equal intervals on the top of the bottom plate;

[0011] A driving assembly for rotational driving is installed in the straight plate close to the test host;

[0012] The other two groups of straight plates are connected with synchronous locking components for simultaneously fixing and limiting the positions of the two groups of photoelectric encoders, and the other two groups of straight plates are in close contact with the photoelectric encoders;

[0013] The synchronous locking assembly includes a translation assembly, a crimping assembly and a locking rod. The locking rod is fixedly mounted on the side wall of the straight plate that contacts the photoelectric encoder and is away from the driving assembly. The translation assembly is fixedly mounted on the top of the bottom plate. The translation assembly is fixedly connected with two sets of crimping assemblies. The crimping assemblies are plugged into the locking rod, and the crimping assemblies are in contact with the end surface of the photoelectric encoder that is away from the driving assembly.

[0014] Elastic connection components are provided between the two groups of photoelectric encoders and between the photoelectric encoder close to the driving component and the driving component. The two ends of one group of elastic connection components are respectively plugged with the output end of the driving component and the end of the transverse axis connected to the photoelectric encoder close to the driving component close to the driving component, and the two ends of the other group of elastic connection components are plugged with the end of the transverse axis connected to the photoelectric encoder close to the driving component far away from the driving component and the end of the transverse axis connected to the photoelectric encoder far away from the driving component close to the driving component, and both groups of photoelectric encoders are connected to the test host.

[0015] Furthermore, the translation assembly includes a cylinder, a T-shaped plate, a connecting seat and a guide rail assembly. The guide rails of the cylinder and the guide rail assembly are fixedly installed on the base plate. The cylinder driving end is fixedly connected to the connecting seat. The connecting seat is fixedly connected to the T-shaped plate. The bottom of the T-shaped plate is fixedly connected to the slider of the guide rail assembly. Both ends of the upper end of the T-shaped plate are connected to crimping assemblies.

[0016] Furthermore, the crimping assembly includes a C-shaped plate, a protrusion and a socket. The C-shaped plate is fixedly installed on the end of the T-shaped plate. The bottom of the upper rear end and the top of the lower side of the C-shaped plate are symmetrically fixed with protrusions. The protrusion is provided with a socket, which is connected to the locking rod.

[0017] Furthermore, the elastic connection component includes a guide transmission component, an elastic component, a guide plug-in component and an abutment component. The elastic component is fixedly connected to the middle end of the outer wall of the guide transmission component, and the guide plug-in components are fixedly connected to both ends of the elastic component. The guide plug-in component is connected to the guide transmission component in a limited sliding manner, and the guide plug-in component is connected to the abutment component away from the guide transmission component. The guide plug-in component is plugged into the drive component and the second connecting block.

[0018] Furthermore, the guide transmission assembly includes a central axis and a limit slider, the outer wall of the central axis is symmetrically fixedly connected to the limit slider, and the guide plug-in assembly is limitedly slidably connected to the limit slider.

[0019] Furthermore, the elastic component includes a fixing ring and a spring. The fixing ring is fixedly installed at the middle end of the central axis. The two side walls of the central axis are fixedly connected with the spring. The outer end of the spring is fixedly connected with the guide plug-in component.

[0020] Furthermore, the guide plug-in assembly includes a sleeve and a limiting groove. The inner wall of the sleeve is slidably connected to the outer wall of the central axis, the sleeve is fixedly connected to the outer end of the spring, and the limiting groove is symmetrically provided on the inner wall of the sleeve. The limiting groove is slidably connected to the limiting sliding block, and the limiting groove is also plugged into the second connecting block and the driving assembly.

[0021] Furthermore, the driving assembly includes a first motor, a connecting shaft and a first connecting block. The straight plate close to the test host is fixedly connected to the first motor, the driving end of the first motor is fixedly connected to the connecting shaft, the end of the connecting shaft away from the first motor is symmetrically fixedly connected to the first connecting block, and the first connecting block is plugged into a limiting slide groove close to the first motor.

[0022] Beneficial effect: The utility model connects the photoelectric encoder with the locking rod of the synchronous locking assembly, and the translation assembly drives the crimping assembly to move. The crimping assembly contacts the locking rod and presses the photoelectric encoder against the side wall of the straight plate, so that the two groups of photoelectric encoders can be easily and quickly installed on the straight plate. At the same time, a group of elastic connection components is connected to the driving assembly and the end of the transverse axis connected to the photoelectric encoder close to the driving assembly is close to the driving assembly, and then the two ends of the other group of elastic connection components are connected to the end of the transverse axis connected to the photoelectric encoder close to the driving assembly away from the driving assembly and connected to the end of the transverse axis connected to the photoelectric encoder away from the driving assembly away from the driving assembly. The driving assembly drives a group of elastic connection components to rotate, and a group of elastic connection components drives the transverse axis close to the driving assembly to rotate. The transverse axis close to the driving assembly drives the transverse axis away from the driving assembly to rotate through another group of elastic connection components. The two groups of photoelectric encoders perform synchronous detection to realize batch detection with high detection efficiency. At the same time, the consistency between the two groups of photoelectric encoders is detected. When there is consistency, the two groups of photoelectric encoders can be used in the application scenario of coaxially arranging two groups of photoelectric encoders. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a three-dimensional diagram of the main structure of a photoelectric encoder testing device of the utility model;

[0025] Figure 2 The bottom plate and its connection structure of the utility model are three-dimensional Figure 1 ;

[0026] Figure 3This is a front view of the bottom plate and its connection structure of the utility model;

[0027] Figure 4 This is a left view of the bottom plate and its connection structure of the utility model;

[0028] Figure 5 The bottom plate and its connection structure of the utility model are three-dimensional Figure 2 ;

[0029] Figure 6 The bottom plate and its connection structure of the utility model are three-dimensional Figure 3 ;

[0030] Figure 7 For along Figure 4 AA direction cross-sectional view;

[0031] Figure 8 for Figure 6 Enlarged view of the structure at B.

[0032] The numbers in the figure represent:

[0033] 1. Test host 2. Bottom plate 3. Straight plate 4. Driving assembly 41. First motor 42. Connecting shaft 43. First connecting block 5. Elastic connecting assembly 51. Fixed ring 52. Spring 53. Sleeve 54. Stopper 55. Limiting slide 56. Middle axis 57. Limiting slide block 6. Straight groove 7. Synchronous locking assembly 71. Cylinder 72. T-shaped plate 73. C-shaped plate 74. Connecting seat 75. Guide rail assembly 76. Bump 77. Socket 78. Lock rod 8. Photoelectric encoder 9. Second connecting block 10. Horizontal axis. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The utility model is further described below in conjunction with embodiments.

[0036] Example 1

[0037] See also Figure 1-Figure 8 , a photoelectric encoder testing device, comprising a testing host 1;

[0038] A bottom plate 2 is provided on one side of the test host 1;

[0039] Three groups of identical straight plates 3 are fixedly connected at equal intervals on the top of the bottom plate 2;

[0040] A driving assembly 4 for rotational driving is installed in the straight plate 3 close to the test host 1;

[0041] The other two groups of straight plates 3 are connected with synchronous locking components 7 for simultaneously fixing and limiting the positions of the two groups of photoelectric encoders 8, and the other two groups of straight plates 3 are in close contact with the photoelectric encoders 8;

[0042] The synchronous locking assembly 7 includes a translation assembly, a crimping assembly and a locking rod 78. The locking rod 78 is fixedly mounted on the side wall of the straight plate 3 away from the driving assembly 4 in contact with the photoelectric encoder 8. The translation assembly is fixedly mounted on the top of the bottom plate 2. The translation assembly is fixedly connected with two sets of crimping assemblies. The crimping assemblies are plugged into the locking rod 78, and the crimping assemblies are in contact with the end surface of the photoelectric encoder 8 away from the driving assembly 4.

[0043] Elastic connection components 5 are provided between the two groups of photoelectric encoders 8 and between the photoelectric encoder 8 near the driving component 4 and the driving component 4. The two ends of one group of elastic connection components 5 are respectively plugged with the output end of the driving component 4 and the end of the transverse axis 10 connected to the photoelectric encoder 8 near the driving component 4 close to the driving component 4, and the two ends of the other group of elastic connection components 5 are plugged with the end of the transverse axis 10 connected to the photoelectric encoder 8 near the driving component 4 away from the driving component 4 and the end of the transverse axis 10 connected to the photoelectric encoder 8 far from the driving component 4 close to the driving component 4, and both groups of photoelectric encoders 8 are connected to the test host 1.

[0044] When the photoelectric encoder 8 is an incremental photoelectric encoder, the test host 1 is an incremental receiver.

[0045] When the photoelectric encoder 8 is an absolute photoelectric encoder, the test host 1 is an absolute receiver.

[0046] When the photoelectric encoder 8 is a hybrid photoelectric encoder, the test host 1 is a hybrid receiver.

[0047] The photoelectric encoder 8 is plugged into the locking rod 78 of the synchronous locking component 7, and the translation component drives the crimping component to move. The crimping component contacts the locking rod 78 and presses the photoelectric encoder 8 onto the side wall of the straight plate 3, so that the two groups of photoelectric encoders 8 are conveniently and quickly installed on the straight plate 3. At the same time, one group of elastic connection components 5 is connected to the end of the transverse axis 10 connected to the photoelectric encoder 8 close to the drive component 4 and close to the drive component 4, and then the ends of the other group of elastic connection components 5 are plugged into the end of the transverse axis 10 connected to the photoelectric encoder 8 close to the drive component 4 and away from the drive component 4. The transverse axis 10 connected to the photoelectric encoder 8 of 4 is connected to the end away from the driving component 4, the driving component 4 drives a group of elastic connection components 5 to rotate, a group of elastic connection components 5 drives the transverse axis 10 close to the driving component 4 to rotate, and the transverse axis 10 close to the driving component 4 drives the transverse axis 10 away from the driving component 4 to rotate through another group of elastic connection components 5. The two groups of photoelectric encoders 8 perform synchronous detection to achieve batch detection with high detection efficiency. At the same time, the consistency between the two groups of photoelectric encoders 8 is detected. If they are consistent, the two groups of photoelectric encoders 8 can be used in the application scenario of coaxially setting two groups of photoelectric encoders.

[0048] See also Figure 1-Figure 5 The translation assembly includes a cylinder 71, a T-shaped plate 72, a connecting seat 74 and a guide rail assembly 75. The guide rails of the cylinder 71 and the guide rail assembly 75 are fixedly installed on the base plate 2. The driving end of the cylinder 71 is fixedly connected to the connecting seat 74. The connecting seat 74 is fixedly connected to the T-shaped plate 72. The bottom of the T-shaped plate 72 is fixedly connected to the slider of the guide rail assembly 75. Both ends of the upper end of the T-shaped plate 72 are connected to crimping assemblies.

[0049] The crimping assembly includes a C-shaped plate 73, a protrusion 76 and a socket 77. The C-shaped plate 73 is fixedly mounted on the end of the T-shaped plate 72. The bottom of the upper part of the rear end of the C-shaped plate 73 and the top of the lower part are symmetrically fixedly connected with the protrusion 76. The protrusion 76 is provided with a socket 77, and the socket 77 is plugged with the locking rod 78.

[0050] The photoelectric encoder 8 is plugged into the locking rod 78 of the synchronous locking assembly 7, the cylinder 71 of the translation assembly drives the connecting seat 74 to move, the connecting seat 74 drives the C-shaped plate 73 to move, and then the T-shaped plate 72 drives the C-shaped plate 73 of the crimping assembly to move under the action of the guide rail assembly 75, the C-shaped plate 73 drives the protrusion 76 to move, the protrusion 76 drives the jack 77 to plug and move with the locking rod 78, the protrusion 76 of the crimping assembly contacts the photoelectric encoder 8, and the C-shaped plate 73 presses the photoelectric encoder 8, so that the two groups of photoelectric encoders 8 can be easily and quickly installed on the straight plate 3.

[0051] See also Figure 1-Figure 5 , Figure 7 and Figure 8The elastic connection component 5 includes a guide transmission component, an elastic component, a guide plug-in component and an abutment component. The elastic component is fixedly connected to the middle end of the outer wall of the guide transmission component, and the two ends of the elastic component are fixedly connected to the guide plug-in component. The guide plug-in component is limitedly slidably connected to the guide transmission component, and the guide plug-in component is connected to the abutment component away from the guide transmission component. The guide plug-in component is plugged into the drive component 4 and the second connecting block 9.

[0052] The guide transmission assembly includes a central axis 56 and a limit slider 57 . The outer wall of the central axis 56 is symmetrically fixedly connected to the limit slider 57 . The guide plug-in assembly is limitedly slidably connected to the limit slider 57 .

[0053] The elastic component includes a fixing ring 51 and a spring 52. The fixing ring 51 is fixedly installed at the middle end of the central axis 56. The springs 52 are fixedly connected to both side walls of the central axis 56. The outer end of the spring 52 is fixedly connected to a guide plug-in component.

[0054] The guide plug-in assembly includes a sleeve 53 and a limiting groove 55. The inner wall of the sleeve 53 is slidably connected to the outer wall of the central axis 56. The sleeve 53 is fixedly connected to the outer end of the spring 52. The inner wall of the sleeve 53 is symmetrically provided with a limiting groove 55. The limiting groove 55 is slidably connected to the limiting slider 57. The limiting groove 55 is also plugged into the second connecting block 9 and the driving assembly 4.

[0055] The abutting assembly includes a stopper 54 , and the stopper 54 is fixedly mounted on the inner wall of the sleeve 53 .

[0056] After the photoelectric encoder 8 is installed on the straight plate 3, the transverse axes 10 of the two groups of photoelectric encoders 8 and the second connecting blocks 9 of the two groups of transverse axes 10 are adjusted to a one-to-one corresponding setting. At the same time, the driving component 4 is adjusted to correspond to the second connecting block 9, and the sleeve 53 of the guide plug-in component of a group of elastic connecting components 5 is slid to move toward the fixed ring 51. After the stopper 54 contacts the middle axis 56, the middle axis 56 is placed between the driving component 4 and the photoelectric encoder 8 close to the driving component 4, and the sleeve 53 is released. The restoring force of the spring 52 drives the sleeve 53 to move, and the limiting slide groove 55 moves along the limiting slider 57. The limiting slide groove 55 moves to the second connecting block 9 connected to the end of the transverse axis 10 connected to the driving component 4 and the photoelectric encoder 8 close to the driving component 4, and the stopper 54 abuts against the transverse axis 10 and the driving component 4 , realizing the connection between the driving component 4 and the transverse axis 10 close to the driving component 4; sliding the sleeve 53 of the guide plug-in assembly of another set of elastic connecting components 5 to move toward the fixing ring 51, after the stopper 54 contacts the middle axis 56, the middle axis 56 is placed between the two groups of photoelectric encoders 8, loosening the sleeve 53, the restoring force of the spring 52 drives the sleeve 53 to move, the limiting slide groove 55 moves along the limiting slide block 57, the limiting slide groove 55 moves to the second connecting block 9 connected to the end of the transverse axis 10 connected to the photoelectric encoder 8 far away from the driving component 4 close to the driving component 4 and the second connecting block 9 connected to the end of the transverse axis 10 connected to the photoelectric encoder 8 close to the driving component 4, the stopper 54 abuts against the transverse axis 10, realizing the connection between adjacent photoelectric encoders 8, and realizing the coaxial connection between the driving component 4 and the two groups of photoelectric encoders 8.

[0057] The driving assembly 4 includes a first motor 41, a connecting shaft 42 and a first connecting block 43. The straight plate 3 close to the test host 1 is fixedly connected to the first motor 41, the driving end of the first motor 41 is fixedly connected to the connecting shaft 42, and the end of the connecting shaft 42 away from the first motor 41 is symmetrically fixedly connected to the first connecting block 43, the first connecting block 43 is plugged into the limiting slide groove 55 close to the first motor 41, and the end of the connecting shaft 42 away from the first motor 41 is abutted against the stop block 54 close to the first motor 41.

[0058] The first motor 41 of the driving assembly 4 drives the connecting shaft 42 to rotate, the connecting shaft 42 drives the first connecting block 43 to rotate, the first connecting block 43 drives the sleeve 53 connected to the first connecting block 43 to rotate, the sleeve 53 drives the central axis 56 to rotate, the central axis 56 drives the transverse axis 10 connected to the adjacent photoelectric encoder 8 to rotate through the limiting slider 57 and the sleeve 53, and then drives the transverse axis 10 connected to the photoelectric encoder 8 away from the driving assembly 4 to rotate through another group of elastic connecting components 5, so that the two groups of photoelectric encoders 8 rotate simultaneously.

[0059] A straight groove 6 is formed on the top of the straight plate 3 , and the horizontal shaft 10 and the output end of the first motor 41 move in the straight groove 6 .

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photoelectric encoder test device, comprising a test host, characterized in that: A bottom plate is provided on one side of the test host; Three sets of identical straight boards are fixedly connected at equal intervals on the top of the bottom plate; A driving assembly for rotational driving is installed in the straight plate close to the test host; The other two groups of straight plates are connected with synchronous locking components for simultaneously fixing and limiting the positions of the two groups of photoelectric encoders, and the other two groups of straight plates are in close contact with the photoelectric encoders; The synchronous locking assembly includes a translation assembly, a crimping assembly and a locking rod. The locking rod is fixedly mounted on the side wall of the straight plate that contacts the photoelectric encoder and is away from the driving assembly. The translation assembly is fixedly mounted on the top of the bottom plate. The translation assembly is fixedly connected with two sets of crimping assemblies. The crimping assemblies are plugged into the locking rod, and the crimping assemblies are in contact with the end surface of the photoelectric encoder that is away from the driving assembly. Elastic connection components are arranged between the two groups of photoelectric encoders and between the photoelectric encoder close to the driving component and the driving component.

2. The photoelectric encoder testing device according to claim 1, characterized in that: The translation assembly includes a cylinder, a T-shaped plate, a connecting seat and a guide rail assembly. The guide rails of the cylinder and the guide rail assembly are fixedly installed on the base plate. The cylinder driving end is fixedly connected to the connecting seat, and the connecting seat is fixedly connected to the T-shaped plate. The bottom of the T-shaped plate is fixedly connected to the slider of the guide rail assembly, and both ends of the upper end of the T-shaped plate are connected to crimping assemblies.

3. The photoelectric encoder testing device according to claim 2, characterized in that: The crimping assembly includes a C-shaped plate, a protrusion and a socket. The C-shaped plate is fixedly installed on the end of the T-shaped plate. The bottom of the upper rear end and the top of the lower side of the C-shaped plate are symmetrically fixed with protrusions. The protrusion is provided with a socket, which is plugged into the locking rod.

4. The photoelectric encoder testing device according to any one of claims 1 to 3, characterized in that: The elastic connection component includes a guide transmission component, an elastic component, a guide plug-in component and an abutment component. The elastic component is fixedly connected to the middle end of the outer wall of the guide transmission component, and the two ends of the elastic component are fixedly connected to the guide plug-in component. The guide plug-in component is limitedly slidably connected to the guide transmission component, and the guide plug-in component is connected to the abutment component away from the guide transmission component. The guide plug-in component is plugged into the drive component and the second connecting block.

5. The photoelectric encoder testing device according to claim 4, characterized in that: The guide transmission component comprises a central axis and a limit slider; the outer wall of the central axis is symmetrically fixedly connected with the limit slider; the guide plug-in component is limitedly slidably connected with the limit slider.

6. The photoelectric encoder testing device according to claim 5, characterized in that: The elastic component comprises a fixing ring and a spring. The fixing ring is fixedly installed at the middle end of the central axis. Both side walls of the central axis are fixedly connected with springs. The outer end of the spring is fixedly connected with a guide plug-in component.

7. The photoelectric encoder testing device according to claim 6, characterized in that: The guide plug-in assembly includes a sleeve and a limiting slide groove. The inner wall of the sleeve is fitted and slidably connected to the outer wall of the central axis. The sleeve is fixedly connected to the outer end of the spring. The inner wall of the sleeve is symmetrically provided with a limiting slide groove. The limiting slide groove is fitted and slidably connected to the limiting slider. The limiting slide groove is also plugged into the second connecting block and the driving assembly.

8. The photoelectric encoder testing device according to any one of claims 5 to 7, characterized in that: The driving assembly includes a first motor, a connecting shaft and a first connecting block. The straight plate close to the test host is fixedly connected to the first motor, the driving end of the first motor is fixedly connected to the connecting shaft, the end of the connecting shaft away from the first motor is symmetrically fixedly connected to the first connecting block, and the first connecting block is plugged into a limiting slide groove close to the first motor.

Images