Transmission belt testing tool

Abstract

The utility model relates to the technical field of fatigue testing, and discloses a transmission belt testing tool, which is used for testing a transmission belt and comprises a base, a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are rotatably connected to the base and are arranged in parallel relatively, and one ends of the first rotating shaft and the second rotating shaft in the same direction are connected through the transmission belt; the end, away from the transmission belt, of the first rotating shaft is connected with a driving device. The end, away from the transmission belt, of the second rotating shaft is connected with a load. The driving device drives the first rotating shaft to rotate, the first rotating shaft drives the second rotating shaft to rotate synchronously through the transmission belt, the actual use condition of the transmission belt can be effectively simulated, and the performance of the transmission belt is accurately tested.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing, in particular to a transmission belt testing tool. Background Art

[0002] With the development of robotic technology, in the field of minimally invasive surgery, surgical robots can stably and effectively assist doctors in performing surgery, so the surgical robot industry has flourished.

[0003] Common minimally invasive surgical robots consist of a doctor's console, a patient surgical platform, and a display device. The doctor inputs operations on the doctor's console and transmits the operation instructions to the patient surgical platform connected to the surgical instrument. The patient surgical platform includes a base, a column, a robotic arm, and instruments. In view of the light load characteristics of the surgical robot, a belt drive structure is often used in the telecentric structure of the robotic arm for control. Compared with gear drive and chain drive, belt drive has the characteristics of simple structure, relative lightness, and relatively stable transmission torque, so it is widely used. However, the drive belt will accumulate fatigue during long-term use, which may cause the drive belt to break, and there is a high probability of causing damage to the patient. Therefore, the selection of the drive belt requires strict performance testing and verification.

[0004] In the prior art, performance tests for transmission belts include tensile performance tests and fatigue limit tests by applying pressure to the transmission belts. Existing testing methods and tooling cannot accurately simulate the operating conditions of transmission belts in surgical robots, resulting in a deviation between the performance evaluation of the transmission belts and their actual service life, posing a safety hazard. Utility Model Content

[0005] The utility model aims to provide a transmission belt testing tool, which can simulate the actual use conditions of the transmission belt in a surgical robot and perform accurate performance testing on the transmission belt.

[0006] In order to solve the above technical problems, the embodiment of the utility model provides a transmission belt testing tool as follows:

[0007] A transmission belt testing tool is used to test the transmission belt, including a base, and a first rotating shaft and a second rotating shaft that are rotatably connected to the base and relatively parallel, wherein the ends of the first rotating shaft and the second rotating shaft in the same direction are connected by a transmission belt; the end of the first rotating shaft away from the transmission belt is connected to a driving device, and the end of the second rotating shaft away from the transmission belt is connected to a load; the driving device drives the first rotating shaft to rotate, and the first rotating shaft drives the second rotating shaft to rotate synchronously through the transmission belt. By driving the first rotating shaft and the second rotating shaft that are rotatably connected to both ends of the base and relatively parallel, and the transmission belt that is set in the same direction between the first rotating shaft and the second rotating shaft, the driving device drives the first rotating shaft and the second rotating shaft connected to the load to perform synchronous transmission, which can effectively simulate the actual use conditions of the transmission belt and perform accurate performance testing on the transmission belt.

[0008] Further, a first fixed groove and a second fixed groove are staggered up and down on the circumferential surface of the first rotating shaft, a third fixed groove and a fourth fixed groove are staggered up and down on the circumferential surface of the second rotating shaft, the transmission belt includes a first transmission belt and a second transmission belt arranged in parallel, two ends of the first transmission belt are fixedly connected to the first fixed groove and the third fixed groove respectively, two ends of the second transmission belt are fixedly connected to the second fixed groove and the fourth fixed groove respectively, and the first rotating shaft and the second rotating shaft are synchronously driven by the first transmission belt and / or the second transmission belt.

[0009] Further, the first fixing groove and the third fixing groove are located in the same horizontal plane, and the second fixing groove and the fourth fixing groove are located in the same horizontal plane; the first fixing groove and the second fixing groove are arranged on both sides of the radial direction of the first rotating shaft, and the third fixing groove and the fourth fixing groove are arranged on both sides of the radial direction of the second rotating shaft end.

[0010] Furthermore, the third fixing groove and / or the fourth fixing groove is provided with a bottom wall and an anti-skid wall extending vertically from one end of the bottom wall to the circumferential surface of the second rotating shaft, and a positioning hole is provided on the bottom wall, and the end of the transmission belt is fixedly connected to the second rotating shaft through the cooperation of the fastener and the positioning hole. The anti-skid wall and the fastener make the connection between the transmission belt and the second rotating shaft more stable, and effectively prevent the transmission belt and the second rotating shaft from sliding relative to each other.

[0011] Further, the second fixed groove and / or the first fixed groove is provided with a support wall, and a limit wall extending vertically from one end of the support wall to the circumferential surface of the first rotating shaft, the other end of the support wall is vertically extended with an adjustment wall, the support wall is slidably connected with an adjustment block, the end of the transmission belt is fixedly connected to the adjustment block through a fastener, an adjustment bolt is threadedly connected on the adjustment wall, one end of the adjustment bolt is fixedly connected to the adjustment block, and rotating the adjustment bolt can drive the adjustment block and the end of the transmission belt to move relative to the second fixed groove and / or the first fixed groove along the transmission direction. By setting the adjustment bolt to pass through the adjustment hole and be fixedly connected to the adjustment block, the tension of the transmission belt can be effectively adjusted, and the actual working conditions can be accurately simulated, so that the test data of the transmission belt is more accurate.

[0012] Furthermore, one end of the base is fixedly connected with a first sleeve, and the other end is fixedly connected with a second sleeve, the first sleeve is arranged in parallel with the second sleeve, the first rotating shaft and the first sleeve are connected to form a rotational connection through a bearing, and the second rotating shaft and the second sleeve are connected to form a rotational connection through a bearing.

[0013] Furthermore, the driving device is a motor, and the first rotating shaft is fixedly connected to the output shaft of the motor via a coupling.

[0014] Furthermore, a contact sensing device is provided between the load and the base, and the contact sensing device includes a contact sensor fixedly arranged on the base and a sensing member fixedly connected to the load.

[0015] Furthermore, a control device is included, the control device is electrically connected to the driving device and the contact sensing device, and the control device can control the forward and reverse rotation of the driving device according to the trigger signal of the contact sensing device, and accumulate the number of trigger signals. Through the arrangement of the control device and the contact sensing device, the first rotating shaft can be synchronously transmitted with the second rotating shaft in a forward and reverse direction, so that the test of the transmission belt is more in line with the actual working conditions.

[0016] Furthermore, the base is fixedly connected with a support frame, and the support frame is used for connecting and fixing the base with the workbench. The support frame fixes and supports the base to increase the stability of the transmission belt test tool during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of the transmission belt test tooling in the test state in the embodiment of the utility model;

[0019] Figure 2 This is a front view of a transmission belt testing tool in an embodiment of the utility model;

[0020] Figure 3 Yes Figure 2 Schematic diagram of the AA section;

[0021] Figure 4 It is a schematic diagram of the partial structure explosion in the embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the first rotating shaft structure in an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the second rotating shaft structure in the embodiment of the utility model.

[0024] Description of reference numerals: 1, load; 2, base; 21, first sleeve; 22, second sleeve; 3, support frame; 4, driving device; 5, transmission belt; 51, first transmission belt; 52, second transmission belt; 6, contact sensor; 7, coupling; 8, fixing frame; 9, induction member; 10, first rotating shaft; 101, first connecting end; 102, first rotating end; 103, first transmission end; 20, second rotating shaft; 201, second connecting end Connecting end; 202, second rotating end; 203, second transmission end; 110, first fixing groove; 120, second fixing groove; 121, supporting wall; 122, limiting wall; 123, adjusting wall; 124, adjusting hole; 125, adjusting bolt; 126, adjusting block; 210, third fixing groove; 220, fourth fixing groove; 221, bottom wall; 222, anti-slip wall; 223, positioning hole; 224, anti-slip block; 30, bearing. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0026] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] like Figure 1-4 As shown, one embodiment of the utility model relates to a transmission belt testing tool for testing a transmission belt 5, comprising a base 2, and a first rotating shaft 10 and a second rotating shaft 20 rotatably connected to the base 2 and arranged relatively parallel, one end of the base 2 is fixedly connected with a first sleeve 21, and the other end is fixedly connected with a second sleeve 22, the first sleeve 21 is arranged parallel to the second sleeve 22, the first sleeve 21 is coaxially rotatably connected with the first rotating shaft 10, the second sleeve 22 is coaxially rotatably connected with the second rotating shaft 20, the first rotating shaft 10 includes a first rotating shaft 20 connected to the driving device 4 The first connecting end 101 connected to the load 1, the first rotating end 102 rotatably connected to the first sleeve 21, and the first transmission end 103 connected to the transmission belt 5, the first connecting end 101, the first rotating end 102, and the first transmission end 103 are coaxially arranged and their diameters increase sequentially; the second rotating shaft 20 includes a second connecting end 201 connected to the load 1, a second rotating end 202 rotatably connected to the second sleeve 22, and a second transmission end 203 connected to the transmission belt 5, the second connecting end 201, the second rotating end 202, and the second transmission end 203 are coaxially arranged and their diameters increase sequentially.

[0028] In one embodiment, the circumferential surface of the first transmission end 103 is provided with a first fixing groove 110 and a second fixing groove 120 which are staggered up and down, and the circumferential surface of the second transmission end 203 is provided with a third fixing groove 210 and a fourth fixing groove 220 which are staggered up and down. Preferably, the first fixing groove 110 and the third fixing groove 210 are located on the same horizontal plane, and the second fixing groove 120 and the third fixing groove 210 are located on the same horizontal plane. The first fixing groove 110 and the second fixing groove 120 are arranged on both sides of the radial direction of the first transmission end 103, and the third fixing groove 210 and the fourth fixing groove 220 are staggered up and down. The fixed groove 220 is arranged on both sides of the second transmission end 203 in the radial direction, and two transmission belts 5 can be installed between the first transmission end 103 and the second transmission end 203, wherein the two ends of the first transmission belt 515 are respectively fixed to the first fixed groove 110 and the third fixed groove 210, and the two ends of the second transmission belt 525 are respectively fixed to the second fixed groove 120 and the fourth fixed groove 220, and the transmission plane of the first transmission belt 515 is parallel to the transmission plane of the second transmission belt 525, and the first rotating shaft 10 and the second rotating shaft 20 can be synchronously driven by the first transmission belt 51 and / or the second transmission belt 52.

[0029] like Figure 5As shown, one embodiment of the utility model relates to a transmission belt testing tool, the second fixing groove 120 and / or the first fixing groove 110 is provided with a support wall 121 recessed on the circumferential surface of the first transmission end 103, the support wall 121 has one end facing the winding direction of the transmission belt 5, and is vertically extended to the circumferential surface of the first transmission end 103 and is provided with a limiting wall 122, the other end of the support wall 121 is vertically extended with an adjustment wall 123, the adjustment wall 123 is arranged parallel to the limiting wall 122, the adjustment wall 123 is provided with an adjustment hole 124 vertically facing the anti-slip wall 222, the adjustment hole 124 is provided with an adjustment bolt 125, and the adjustment bolt 125 is threadedly connected to the adjustment hole 124; the support wall 121 is movably connected with an adjustment block 126, and the adjustment block 126 is slidably connected to the support wall 121 Dynamic connection, the end of the transmission belt 5 is fixedly connected to the adjustment block 126 by a fastener, and the adjusting bolt 125 is fixedly connected to the adjusting block 126 through the adjusting hole 124, and the adjusting block 126 and the end of the transmission belt 5 are driven to move relative to the second fixed groove 120 along the transmission direction through the threaded adjustment of the adjusting bolt 125, so that the tension of the transmission belt 5 can be effectively adjusted, and the actual working conditions can be accurately simulated, so that the test data of the transmission belt 5 is more accurate, and the effective verification of the performance of the transmission belt 5 is achieved; preferably, the upper and lower end surfaces of the transmission belt 5 along the axial direction of the fastener are also provided with gaskets, and the fastener is arranged through the gasket, and the adjusting block 126 and / or the gasket are used to keep the fixed end of the transmission belt 5 tangent to the circumferential surface of the first transmission end 103, and to increase the stability of the connection between the transmission belt 5 and the first transmission end 103.

[0030] like Figure 6As shown, one embodiment of the utility model relates to a transmission belt testing tool, the third fixing groove 210 and / or the fourth fixing groove 220 is provided with a bottom wall 221 recessed on the circumferential surface of the second transmission end 203, the bottom wall 221 is facing one end of the winding direction of the transmission belt 5, and the circumferential surface extending vertically to the second transmission end 203 is provided with an anti-slip wall 222, and a positioning hole 223 is provided on the bottom wall 221, and a fastener is used to pass through the end of the transmission belt 5 and connect and fix with the positioning hole 223, so that the end of the transmission belt 5 is fixedly connected to the second transmission end 203, preferably, an anti-slip block 224 is also provided between the end of the transmission belt 5 and the bottom wall 221, one end of the anti-slip block 224 abuts against the anti-slip wall 222, and the fastener passes through the end of the transmission belt 5, the anti-slip block 224 and the positioning hole 223 for fixed connection. The anti-slip block 224 abuts against the anti-slip wall 222, and can support the transmission belt 5 when the transmission belt 5 is subjected to force, effectively preventing relative sliding between the transmission belt 5 and the second transmission end 203, and increasing the stability of the connection between the transmission belt 5 and the second transmission end 203; preferably, the transmission belt 5 is also provided with gaskets on the upper and lower end surfaces along the axial direction of the fastener, and the fastener is arranged through the gasket, and the anti-slip block 224 and / or the gasket are used to keep the fixed end of the transmission belt 5 tangent to the circumferential surface of the second transmission end 203, and increase the stability of the connection between the transmission belt 5 and the second transmission end 203.

[0031] In one embodiment, a transmission belt testing tool is provided, wherein the first rotating end 102 and the first sleeve 21 are connected to form a rotational connection via a bearing 30. Preferably, a plurality of bearings 30 are provided, which is beneficial to increase the stability of the rotational connection between the first rotating shaft 10 and the base 2; the second rotating end 202 and the second sleeve 22 are connected to form a rotational connection via a bearing 30. Preferably, a plurality of bearings 30 are provided, which is beneficial to increase the stability of the rotational connection between the second rotating shaft 20 and the base 2.

[0032] In one embodiment, it relates to a transmission belt testing tool, which also includes a fixed frame 8, one end of the fixed frame 8 is fixedly connected to the base 2, and the other end is fixedly connected to the driving device 4, and the fixed frame 8 can provide effective support for the driving device 4 to maintain the stability of the driving device 4; the output shaft of the driving device 4 is fixedly connected to the first connecting end 101 through a coupling 7, preferably, the driving device 4 is a motor, the first connecting end 101 is fixedly connected to the output shaft of the motor through the coupling 7, and the motor is fixedly connected to the base 2 through the support frame 3.

[0033] In one embodiment, a transmission belt testing tool is provided, wherein the second connection end 201 is fixedly connected to the load 1 by a fastener, and a contact sensing device is provided between the load 1 and the base 2. When the load 1 moves close to the base 2, the contact sensing device can be triggered at a specific position, and the contact sensing device includes a contact sensor 6 and a sensing element 9. The contact sensor 6 is fixedly arranged on the base 2, and the sensing element 9 is fixedly arranged on the load 1. The sensing element 9 is arranged corresponding to the contact sensor 6. When the load 1 rotates forward or reversely to a specific position, the sensing element 9 contacts the contact sensor 6 to cause a voltage or current signal change, and transmits the signal data to the outside. Preferably, the contact sensor 6 is a photoelectric sensor.

[0034] In one embodiment, a transmission belt test fixture is provided, wherein the transmission belt test fixture further comprises a control device, wherein the control device is electrically connected to the contact sensor 6 and the drive device 4, and is used to receive a signal from the contact sensor 6 and send a control instruction to the drive device 4, so as to control the drive device 4 to change the rotation direction of the output shaft. Preferably, the control device can effectively record and cumulatively calculate the number of times the contact sensor 6 triggers the signal, and use this as a basis for fatigue testing of the transmission belt 5.

[0035] In one embodiment, a transmission belt testing tool is provided, which further includes a support frame 3, one end of which is fixedly connected to the base 2, and the other end of which is used to be fixedly connected to a workbench to increase the stability of the transmission belt testing tool during use.

[0036] The transmission belt testing tool provided by the utility model has a first rotating shaft and a second rotating shaft that are rotatably connected to both ends of the base and are relatively parallel, and a transmission belt that is unidirectionally arranged between the first rotating shaft and the second rotating shaft. The driving device drives the first rotating shaft and the second rotating shaft connected to the load to perform synchronous transmission, truly simulating the application scenario of the transmission belt in the surgical robot and performing accurate performance testing of the transmission belt.

[0037] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A transmission belt testing tool, used for testing a transmission belt (5), characterized in that: The invention comprises a base (2), and a first rotating shaft (10) and a second rotating shaft (20) which are rotatably connected to the base (2) and are arranged relatively parallel to each other, wherein the ends of the first rotating shaft (10) and the second rotating shaft (20) in the same direction are connected via a transmission belt (5); the end of the first rotating shaft (10) away from the transmission belt (5) is connected to a driving device (4), and the end of the second rotating shaft (20) away from the transmission belt (5) is connected to a load (1); the driving device (4) drives the first rotating shaft (10) to rotate, and the first rotating shaft (10) drives the second rotating shaft (20) to rotate synchronously via the transmission belt (5).

2. The transmission belt testing tool according to claim 1, characterized in that: A first fixed groove (110) and a second fixed groove (120) are staggered in the upper and lower circumference of the first rotating shaft (10); a third fixed groove (210) and a fourth fixed groove (220) are staggered in the upper and lower circumference of the second rotating shaft (20); the transmission belt (5) comprises a first transmission belt (51) and a second transmission belt (52) which are arranged in parallel; two ends of the first transmission belt (51) are respectively fixedly connected to the first fixed groove (110) and the third fixed groove (210); two ends of the second transmission belt (52) are respectively fixedly connected to the second fixed groove (120) and the fourth fixed groove (220); the first rotating shaft (10) and the second rotating shaft (20) are synchronously driven via the first transmission belt (51) and / or the second transmission belt (52).

3. The transmission belt testing tool according to claim 2, characterized in that: The first fixing groove (110) and the third fixing groove (210) are located on the same horizontal plane, and the second fixing groove (120) and the fourth fixing groove (220) are located on the same horizontal plane; the first fixing groove (110) and the second fixing groove (120) are arranged on both sides of the radial direction of the first rotating shaft (10), and the third fixing groove (210) and the fourth fixing groove (220) are arranged on both sides of the radial direction of the second rotating shaft (20).

4. The transmission belt testing tool according to claim 2, characterized in that: The third fixing groove (210) and / or the fourth fixing groove (220) are provided with a bottom wall (221) and an anti-slip wall (222) extending vertically along one end of the bottom wall (221) to the circumferential surface of the second rotating shaft (20); a positioning hole (223) is provided on the bottom wall (221); and the end of the transmission belt (5) is fixedly connected to the second rotating shaft (20) by means of a fastener engaging with the positioning hole (223).

5. The transmission belt testing tool according to claim 4, characterized in that: The second fixed groove (120) and / or the first fixed groove (110) are provided with a support wall (121), and a limiting wall (122) extending vertically along one end of the support wall (121) to the circumferential surface of the first rotating shaft (10); an adjusting wall (123) extending vertically at the other end of the support wall (121); an adjusting block (126) is slidably connected to the support wall (121); an end of the transmission belt (5) is fixedly connected to the adjusting block (126) through a fastener; an adjusting bolt (125) is threadedly connected to the adjusting wall (123); one end of the adjusting bolt (125) is fixedly connected to the adjusting block (126); rotating the adjusting bolt (125) can drive the adjusting block (126) and the end of the transmission belt (5) to move relative to the second fixed groove (120) and / or the first fixed groove (110) along the transmission direction.

6. The transmission belt testing tool according to claim 1, characterized in that: A first sleeve (21) is fixedly connected to one end of the base (2), and a second sleeve (22) is fixedly connected to the other end; the first sleeve (21) and the second sleeve (22) are arranged in parallel; the first rotating shaft (10) and the first sleeve (21) are connected to form a rotational connection via a bearing (30); and the second rotating shaft (20) and the second sleeve (22) are connected to form a rotational connection via a bearing (30).

7. The transmission belt testing tool according to claim 1, characterized in that: The driving device (4) is a motor, and the first rotating shaft (10) is fixedly connected to the output shaft of the motor via a coupling (7).

8. The transmission belt testing tool according to claim 1, characterized in that: A contact sensing device is provided between the load (1) and the base (2), and the contact sensing device comprises a contact sensor (6) fixedly arranged on the base (2) and a sensing element (9) fixedly connected to the load (1).

9. The transmission belt testing tool according to claim 8, characterized in that: It comprises a control device, which is electrically connected to the drive device (4) and the contact sensing device. The control device can control the forward and reverse rotation of the drive device (4) according to a trigger signal from the contact sensing device, and accumulate and calculate the number of trigger signals.

10. The transmission belt testing tool according to any one of claims 1 to 9, characterized in that: The base (2) is fixedly connected to a support frame (3), and the support frame (3) is used to connect and fix the base (2) and the workbench.

Images