阅读说明：本技术 扭矩限制器测试系统及方法 (Torque limiter testing system and method ) 是由 张鹏远 黄柏权 蒋鹏飞 于 2021-07-28 设计创作，主要内容包括：本发明提供一种扭矩限制器测试系统及方法,其中扭矩限制器测试系统包括试验台架、旋转驱动装置、扭力筒以及角度测量装置,其中旋转驱动装置安装于试验台架上；扭力筒的第一端与旋转驱动装置相连,扭力筒的第二端用于连接被测扭矩限制器,被测扭矩限制器安装于试验台架上；角度测量装置包括应变片以及与应变片相配合的扭矩传感器,应变片安装于扭力筒上,扭矩传感器安装于试验台架上。本发明能够在被测扭矩限制器的整个圆周方向上进行打滑测试,能够监测被测扭矩限制器的旋转角度和打滑扭矩,从而有效验证被测扭矩限制器的可靠性。(The invention provides a torque limiter test system and a method, wherein the torque limiter test system comprises a test bench, a rotary driving device, a torque cylinder and an angle measuring device, wherein the rotary driving device is arranged on the test bench; the first end of the torsion cylinder is connected with the rotary driving device, the second end of the torsion cylinder is used for connecting a tested torque limiter, and the tested torque limiter is arranged on the test bench; the angle measuring device comprises a strain gauge and a torque sensor matched with the strain gauge, the strain gauge is installed on the torsion cylinder, and the torque sensor is installed on the test bed. The invention can perform the slip test in the whole circumferential direction of the tested torque limiter, and can monitor the rotation angle and the slip torque of the tested torque limiter, thereby effectively verifying the reliability of the tested torque limiter.)

1. A torque limiter testing system, comprising:

a test bed;

the rotation driving device is arranged on the test bench;

the first end of the torsion cylinder is connected with the rotary driving device, the second end of the torsion cylinder is used for being connected with a torque limiter to be measured, and the torque limiter to be measured is arranged on the test bench;

the angle measuring device comprises a strain gauge and a torque sensor matched with the strain gauge, wherein the strain gauge is installed on the torsion cylinder, and the torque sensor is installed on the test bench.

2. The torque limiter testing system of claim 1, wherein the rotational drive mechanism comprises a hydraulic station, a hydraulic motor coupled to the hydraulic station, and a speed reducer coupled to the hydraulic motor, the speed reducer being mounted on the test rig, a power output shaft of the speed reducer being coupled to the first end of the torque tube.

3. The torque limiter testing system of claim 2, wherein the first end of the torque barrel is connected to the power output shaft of the speed reducer through a spline assembly, the spline assembly includes a spline shaft and a spline housing fitted to the spline shaft, the spline shaft is mounted in the spline housing, and the spline shaft is in sliding fit with the spline housing.

4. The torque limiter testing system of claim 3, wherein the spline shaft is disposed on the power output shaft of the speed reducer toward an end of the torque barrel, and the spline housing is mounted to the first end of the torque barrel.

5. The torque limiter testing system of claim 4, wherein the torque tube comprises a tube body, an annular first connecting end plate is arranged at the outer edge of the first end of the tube body, the first connecting end plate is connected with a torque tube connecting flange, and the spline housing is mounted on one side, facing the speed reducer, of the torque tube connecting flange; and an annular second connecting end plate is arranged on the outer edge of the second end of the cylinder body and is used for connecting the torque limiter to be measured.

6. The torque limiter test system according to any one of claims 3 to 5, further comprising a limiting mechanism for limiting a sliding distance between the spline shaft and the spline housing, wherein the limiting mechanism comprises a limiting disc, a circular through hole is formed in the center of the limiting disc, and the limiting disc is connected with an end face of the spline shaft; an annular first limiting step is arranged on the outer peripheral side of the limiting disc, and a limiting groove is formed between the first limiting step and the end face of the spline shaft; the inner ring of the torque tube connecting flange is provided with an annular second limiting step, the second limiting step is arranged at a position, close to the spline shaft, on the torque tube connecting flange, the second limiting step is arranged in the limiting groove, and the second limiting step can move in the limiting groove along the axis direction of the spline shaft.

7. The torque limiter testing system of any one of claims 2 to 5, wherein the test bench comprises a base plate, a first fixing bracket, a second fixing bracket and two connecting plates, the first fixing bracket and the second fixing bracket are fixed on the base plate at intervals, the first fixing bracket is used for mounting the speed reducer, and the second fixing bracket is used for mounting the torque limiter; the two connecting plates are fixed on the bottom plate at intervals, and two ends of each connecting plate are correspondingly connected with the first fixing support and the second fixing support, so that the bottom plate, the first fixing support, the second fixing support and the two connecting plates form an integrated structure.

8. The torque limiter testing system of claim 7, wherein the first fixing bracket comprises a first support plate, a first through hole is formed in the first support plate, a power output shaft of the speed reducer passes through the first through hole to be connected with the first end of the torque cylinder, a speed reducer mounting flange is arranged on the outer peripheral side of the speed reducer, and the speed reducer mounting flange is connected with the first support plate;

the second fixing support comprises a second support plate, a second through hole is formed in the second support plate, the second end of the torsion tube penetrates through the second through hole to be connected with an inner ring flange of the torque limiter to be measured, and an outer ring flange of the torque limiter to be measured is connected with the second support plate.

9. The torque limiter testing system of any one of claims 1 to 5, further comprising a control cabinet, wherein the control cabinet comprises a control cabinet housing, a controller disposed inside the control cabinet housing, and a display screen disposed on the control cabinet housing, and the display screen, the torque sensor, and the rotation driving device are respectively connected to the controller.

10. A torque limiter testing method, characterized by employing the torque limiter testing system as claimed in any one of claims 1 to 9, comprising:

starting a rotary driving device and controlling the output torque of the rotary driving device to gradually increase;

when the output torque of the rotary driving device is smaller than the slip torque of the torque limiter to be measured, the rotary driving device, the torque barrel and the torque limiter to be measured are all in a static state, and the torque limiter to be measured does not slip;

when the output torque of the rotary driving device is larger than or equal to the slipping torque of the torque limiter to be measured, the output torque of the rotary driving device is transmitted to the torque limiter to be measured through the torsion cylinder, so that the torque limiter to be measured slips and rotates, and the data of the rotating angle and the slipping torque in the test process are collected through the angle measuring device;

and when the acquired rotation angle reaches a preset angle, controlling the rotation driving device to stop, and simultaneously displaying a change curve of the slip torque in the test process.

Technical Field

The invention relates to the technical field of performance detection of couplings, in particular to a torque limiter testing system and a torque limiter testing method.

Background

The most common failure of the fan coupling is that a torque protection mechanism (i.e. a slipping mechanism) is damaged, so that the fan cannot normally operate. In order to ensure the reliability of the slipping mechanism, the slipping torque calibration and the delivery test of each slipping mechanism are carried out so as to ensure that the slipping mechanism reaches a target value before delivery and has high reliability, and the slipping fatigue test of each slipping mechanism is carried out so as to verify the slipping fatigue life.

The existing coupler fatigue test bed is used for testing by pushing the oil cylinder to reciprocate through the hydraulic station, only reciprocating motion can be carried out within a certain angle, the test equipment is simple, the test system is simple, the tested piece cannot rotate in a whole circle, the rotation angle and the slip torque of the tested piece cannot be monitored, and the reliability of the torque limiter cannot be verified.

Disclosure of Invention

The invention provides a torque limiter testing system, which can perform a slip test in the whole circumferential direction of a tested torque limiter, can monitor the rotation angle and the slip torque of the tested torque limiter and further can effectively verify the reliability of the tested torque limiter.

The embodiment of the invention provides a torque limiter testing system, which comprises:

a test bed;

the rotation driving device is arranged on the test bench;

the first end of the torsion cylinder is connected with the rotary driving device, the second end of the torsion cylinder is used for being connected with a torque limiter to be measured, and the torque limiter to be measured is arranged on the test bench;

the angle measuring device comprises a strain gauge and a torque sensor matched with the strain gauge, wherein the strain gauge is installed on the torsion cylinder, and the torque sensor is installed on the test bench.

According to the torque limiter testing system provided by the embodiment of the invention, the rotary driving device comprises a hydraulic station, a hydraulic motor connected with the hydraulic station and a speed reducer connected with the hydraulic motor, the speed reducer is mounted on the test bench, and a power output shaft of the speed reducer is connected with the first end of the torsion cylinder.

According to the torque limiter testing system provided by the embodiment of the invention, the first end of the torsion cylinder is connected with the power output shaft of the speed reducer through the spline assembly, the spline assembly comprises the spline shaft and the spline housing matched with the spline shaft, the spline shaft is installed in the spline housing, and the spline shaft is in sliding fit with the spline housing.

According to the torque limiter testing system provided by the embodiment of the invention, the spline shaft is arranged at one end, facing the torque barrel, of the power output shaft of the speed reducer, and the spline sleeve is arranged at the first end of the torque barrel.

According to the torque limiter testing system provided by the embodiment of the invention, the torque tube comprises a tube body, an annular first connecting end plate is arranged on the outer edge of the first end of the tube body, the first connecting end plate is connected with a torque tube connecting flange, and the spline housing is arranged on one side, facing the speed reducer, of the torque tube connecting flange; and an annular second connecting end plate is arranged on the outer edge of the second end of the cylinder body and is used for connecting the torque limiter to be measured.

The torque limiter testing system further comprises a limiting mechanism used for limiting the sliding distance between the spline shaft and the spline sleeve, wherein the limiting mechanism comprises a limiting disc, a circular through hole is formed in the center of the limiting disc, and the limiting disc is connected with the end face of the spline shaft; an annular first limiting step is arranged on the outer peripheral side of the limiting disc, and a limiting groove is formed between the first limiting step and the end face of the spline shaft; the inner ring of the torque tube connecting flange is provided with an annular second limiting step, the second limiting step is arranged at a position, close to the spline shaft, on the torque tube connecting flange, the second limiting step is arranged in the limiting groove, and the second limiting step can move in the limiting groove along the axis direction of the spline shaft.

According to the torque limiter testing system provided by the embodiment of the invention, the test bench comprises a bottom plate, a first fixing support, a second fixing support and two connecting plates, wherein the first fixing support and the second fixing support are fixed on the bottom plate at intervals, the first fixing support is used for mounting the speed reducer, and the second fixing support is used for mounting the torque limiter; the two connecting plates are fixed on the bottom plate at intervals, and two ends of each connecting plate are correspondingly connected with the first fixing support and the second fixing support, so that the bottom plate, the first fixing support, the second fixing support and the two connecting plates form an integrated structure.

According to the torque limiter testing system provided by the embodiment of the invention, the first fixing support comprises a first support plate, a first through hole is formed in the first support plate, a power output shaft of the speed reducer penetrates through the first through hole to be connected with the first end of the torque cylinder, a speed reducer mounting flange is arranged on the outer peripheral side of the speed reducer, and the speed reducer mounting flange is connected with the first support plate;

the second fixing support comprises a second support plate, a second through hole is formed in the second support plate, the second end of the torsion tube penetrates through the second through hole to be connected with an inner ring flange of the torque limiter to be measured, and an outer ring flange of the torque limiter to be measured is connected with the second support plate.

According to the torque limiter testing system provided by the embodiment of the invention, the torque limiter testing system further comprises a control cabinet, the control cabinet comprises a control cabinet shell, a controller arranged in the control cabinet shell and a display screen arranged on the control cabinet shell, and the display screen, the torque sensor and the rotation driving device are respectively connected with the controller.

The embodiment of the invention also provides a torque limiter testing method, and the torque limiter testing system adopting the embodiment comprises the following steps:

starting a rotary driving device and controlling the output torque of the rotary driving device to gradually increase;

when the output torque of the rotary driving device is smaller than the slip torque of the torque limiter to be measured, the rotary driving device, the torque barrel and the torque limiter to be measured are all in a static state, and the torque limiter to be measured does not slip;

when the output torque of the rotary driving device is larger than or equal to the slipping torque of the torque limiter to be measured, the output torque of the rotary driving device is transmitted to the torque limiter to be measured through the torsion cylinder, so that the torque limiter to be measured slips and rotates, and the data of the rotating angle and the slipping torque in the test process are collected through the angle measuring device;

and when the acquired rotation angle reaches a preset angle, controlling the rotation driving device to stop, and simultaneously displaying a change curve of the slip torque in the test process.

The torque limiter testing system provided by the embodiment of the invention comprises a test bench, a rotary driving device, a torque cylinder and an angle measuring device, wherein the rotary driving device is arranged on the test bench, the first end of the torque cylinder is connected with the rotary driving device, and the second end of the torque cylinder is used for connecting a tested torque limiter, i.e. the rotary driving device can drive the torque cylinder to rotate along an axis, and then the torque cylinder drives the tested torque limiter to rotate in a whole circle, so that a slip test can be performed in the whole circumferential direction; the angle measuring device comprises a strain gauge and a torque sensor matched with the strain gauge, the strain gauge is installed on the torque cylinder, the torque sensor is installed on the test bed, when in test, the strain gauge can synchronously rotate along with the torque cylinder, and the rotation angle and the slip torque data of the torque cylinder can be collected through the torque sensor, so that the change curve of the slip torque in the test process can be obtained, and the stability and the reliability of the tested torque limiter are effectively verified.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a torque limiter test system provided by the present invention;

FIG. 2 is a top view block diagram of a torque limiter testing system provided by the present invention;

FIG. 3 is a schematic view of the assembly of the test stand, torque tube, reducer and torque limiter under test of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3 according to the present invention;

fig. 5 is a structural schematic diagram of the tray body of the present invention.

Reference numerals:

1: a test bed; 101: a base plate; 102: a first fixed bracket;

103: a second fixed bracket; 104: a first connecting plate; 105: a second connecting plate;

2: a torsion cylinder; 201: a first connection end plate; 202: a second connection end plate;

3: a control cabinet; 4: a measured torque limiter; 5: a hydraulic station;

501: a hydraulic oil input pipeline; 502: a hydraulic oil output pipeline; 6: a hydraulic motor;

7: a speed reducer; 701: a power take-off shaft; 702: a spline shaft;

703: a reducer mounting flange; 8: the torsion cylinder is connected with a flange; 801: a second limit step;

9: a spline housing; 10: a first connecting bolt; 11: a second connecting bolt;

12: a limiting disc; 121: a circular through hole; 122: a first limit step;

13: a first connecting member; 14: a second connecting member; 15: a third connecting member;

16: a fourth connecting member; 17: a strain gauge; 18: a torque sensor;

19: and connecting the bracket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A specific embodiment of the torque limiter test system of the present invention is described below in conjunction with fig. 1-5.

The torque limiter testing system comprises a test bench 1, a rotary driving device, a torque cylinder 2 and an angle measuring device, wherein the rotary driving device is mounted on the test bench 1, and the rotary driving device is supported and fixed through the test bench 1.

The first end of the torque cylinder 2 is connected with the rotation driving device, the second end of the torque cylinder 2 is used for connecting a tested torque limiter 4, and the tested torque limiter 4 is installed on the test bench 1. That is, when testing, can drive torsion section of thick bamboo 2 through the rotation driving device and rotate to provide output torque to torsion section of thick bamboo 2, and then drive by torsion section of thick bamboo 2 and carry out the full circle rotation by torque limiter 4, thereby can be at the test of skidding of by the whole circumferencial direction of torque limiter 4.

The angle measuring device comprises a strain gauge 17 and a torque sensor 18 matched with the strain gauge 17, wherein the strain gauge 17 is installed on the torsion cylinder 2, and the torque sensor 18 is installed on the test bed 1. During the test, foil gage 17 can be along with torsion cylinder 2 synchronous revolution, can gather the rotation angle and the torque data that skids of torsion cylinder 2 in the testing process through torque sensor 18 to can acquire the change curve of the moment of torsion that skids in the testing process, and then effectively verify the stability and the reliability of being surveyed torque limiter.

Specifically, the strain gauge 17 has an annular structure, and the strain gauge 17 is fixedly attached to the outer peripheral side of the torque tube 2, and the torque sensor 18 is attached to the test bed 1 at a position close to the strain gauge 17. Therefore, when the torque cylinder 2 rotates, the strain gauge 17 can be driven to synchronously rotate, so that the torque sensor 18 matched with the strain gauge 17 can be used for acquiring the rotation angle and the slip torque data of the torque cylinder 2, and the acquired rotation angle and the slip torque data are the rotation angle and the slip torque data of the torque limiter 4 to be measured.

Further, the torque limiter test system further comprises a control cabinet 3, wherein the control cabinet 3 comprises a control cabinet shell, a controller arranged inside the cabinet making shell and a display screen arranged on the cabinet making shell, and the display screen, the torque sensor 18 and the rotary driving device are respectively connected with the controller. That is, can control rotary drive's operating condition through the controller, torque sensor 18 can convey the rotation angle of gathering and the torque data that skids to the controller simultaneously, can draw out the change curve of the torque that skids in the testing process through the controller and show through the display screen to the change and the stability of the torque that skids of tester observation aassessment.

In some embodiments of the present invention, the rotation driving device includes a hydraulic station 5, a hydraulic motor 6 connected to the hydraulic station 5, and a speed reducer 7 connected to the hydraulic motor 6, wherein the speed reducer 7 is mounted on the test bed 1, and a power output shaft 701 of the speed reducer 7 is connected to the first end of the torque tube 2, so as to realize rotation driving of the torque tube 2.

Specifically, the hydraulic station 5 is connected to the hydraulic motor 6 through a hydraulic oil input pipeline 501 and a hydraulic oil output pipeline 502, respectively, wherein a first pressure sensor is disposed on the hydraulic oil input pipeline 501, and a second pressure sensor is disposed on the hydraulic oil output pipeline 502. The inlet pressure and the outlet pressure of the hydraulic motor 6 can be acquired by the first pressure sensor and the second pressure sensor, respectively.

Wherein, still be equipped with driving motor in this hydraulic pressure station, this driving motor is connected with the oil pump, as the power supply of hydraulic pressure station 5.

Wherein, driving motor, first pressure sensor and second pressure sensor all link to each other with switch board 3, can control driving motor's operating condition through switch board 3, can acquire hydraulic motor 6's inlet pressure and outlet pressure data simultaneously.

It should be noted that the structure of the rotation driving device is not limited to the above type. In other embodiments of the present invention, the rotation driving device may also adopt a structure that a rotating motor is combined with a speed reducer, so as to provide a rotation power for the torque barrel 2, so as to perform a slip test on the torque limiter 4 to be tested in the whole circumferential direction.

In some embodiments of the present invention, the first end of the torque barrel 2 is connected to the power output shaft of the speed reducer 7 through a spline assembly, wherein the spline assembly includes a spline shaft 702 and a spline housing 9 fitted to the spline shaft 702, the spline shaft 702 is installed in the spline housing 9, and the spline shaft 702 is in sliding fit with the spline housing 9. That is, by connecting the torque cylinder 2 and the speed reducer 7 through the spline assembly, only torque can be transmitted between the speed reducer 7 and the torque cylinder 2, thereby avoiding generating additional axial force. And the spline shaft 702 can slide in the spline housing 9 in the axial direction, so that the torque barrel 2 can slide in the axial direction relative to the speed reducer 7 under the action of an axial external force, and a larger slip torque detection capability can be provided.

In addition, be connected through the spline subassembly between a torsion section of thick bamboo 2 and the reduction gear 7, compare in prior art's interference fit mode or bolted connection mode, can be more convenient dismantle a torsion section of thick bamboo 2 from reduction gear 7, be convenient for realize the change of a torsion section of thick bamboo 2.

In an embodiment of the present invention, the spline shaft 702 may be disposed on the power output shaft 701 of the speed reducer 7 toward one end of the torque barrel 2, and the spline housing 9 may be mounted on the first end of the torque barrel 2, so as to realize torque transmission from the speed reducer 7 to the torque barrel 2.

In another embodiment of the present invention, the spline shaft 702 may be disposed at the first end of the torque barrel 2, and the spline housing 9 may be disposed on the power output shaft 701 of the speed reducer 7 toward one end of the torque barrel 2, so as to realize torque transmission from the speed reducer 7 to the torque barrel 2.

Next, the manner of assembling the spline assembly will be specifically described, taking as an example the case where the spline shaft 702 is provided on the power output shaft 701 of the speed reducer 7 and the spline housing 9 is attached to the first end of the torque tube 2.

Specifically, the torque tube 2 includes a tube body, an annular first connection end plate 201 is disposed at an outer edge of a first end of the tube body, and the first connection end plate 201 is connected to the torque tube connection flange 8 through a first connection bolt 10. The outer diameter of the outer ring of the torque tube connecting flange 8 is larger than the outer diameter of the outer ring of the first connecting end plate 201.

The spline housing 9 is mounted on the torque cylinder connecting flange 8 and faces one side of the speed reducer 7, and the spline housing 9 is connected with the torque cylinder connecting flange 8 through the second connecting bolt 11, so that the spline housing 9 is reliably assembled and fixed at the first end of the torque cylinder 2. Wherein, the outer diameter of the outer ring of the disk body 9 is equal to that of the outer ring of the torque tube connecting flange 8.

Specifically, a strain gauge mounting groove is formed in one side, back to the speed reducer 7, of the torque tube connecting flange 8, the strain gauge 17 is arranged in the strain gauge mounting groove, and the strain gauge 17 is fixedly connected to the torque tube connecting flange 8 through the second connecting bolt 11, so that the strain gauge 17 is stably and reliably assembled and fixed on the torque tube 2.

In some embodiments of the present invention, the torque limiter test system further includes a limiting mechanism for limiting the sliding distance between spline shaft 702 and spline housing 9, which is installed between torque tube 2 and spline shaft 702. That is, through setting up this stop gear, can prescribe a limit to for torsion section of thick bamboo 2 for reduction gear 7 along axial sliding position, not only can ensure the reliability of being connected between torsion section of thick bamboo 2 and the reduction gear 7, when dismantling and changing surveyed torque limiter 4, can prevent effectively that spline shaft 702 from deviating from spline housing 9 moreover, and then prevent that torsion section of thick bamboo 2 from dropping.

Specifically, the limiting mechanism comprises a limiting disc 12, a circular through hole 121 is formed in the center of the limiting disc 12, and the limiting disc 12 is fixedly connected with the end face of the spline shaft 702 through a first connecting piece 13. An annular first limiting step 122 is arranged on the outer peripheral side of the limiting disc 12, and a limiting groove is formed between the first limiting step 122 and the end face of the spline shaft 702. An annular second limiting step 801 is arranged on the inner ring of the torque tube connecting flange 8, the second limiting step 801 is arranged on the torque tube connecting flange 8 at a position close to the spline shaft 702, the second limiting step 801 is arranged in a limiting groove, and the second limiting step 801 can move in the limiting groove along the axial direction of the spline shaft 702. That is, through the limit structure setting between limit disc 12 and the torque tube flange 8, can prescribe a limit to for torque tube 2 along axial sliding position for reduction gear 7, not only can ensure the reliability of being connected between torque tube 2 and the reduction gear 7, moreover when dismantling and changing surveyed torque limiter 4, can prevent that spline tooth 702 from deviating from spline housing 9, and then prevent that torque tube 2 from dropping.

Wherein, according to the actual use requirement, the first connecting piece 13 can adopt a bolt, a screw or a pin. It should be understood, however, that the form of the first connecting member 13 is not limited to the type described above.

In some embodiments of the present invention, the test bed 1 includes a base plate 101, a first fixing bracket 102, a second fixing bracket 103, and two connecting plates, the first fixing bracket 102 and the second fixing bracket 103 are fixed to the base plate 101 at intervals, the first fixing bracket 102 is used for mounting the speed reducer 7, and the second fixing bracket 103 is used for mounting the torque limiter 4. The two connecting plates are respectively a first connecting plate 104 and a second connecting plate 105, the two connecting plates are fixed on the bottom plate 101 at intervals, and two ends of each connecting plate 101 are correspondingly connected with the first fixing support 102 and the second fixing support 103, so that the bottom plate 101, the first fixing support 102, the second fixing support 103, the first connecting plate 104 and the second connecting plate 105 form an integrated structure. That is, this kind of structural style of test bench, because pass through bottom plate 101 between first fixed bolster 102 and the second fixed bolster 103 respectively, first connecting plate 104 and second connecting plate 105 are connected fixedly, consequently when testing, the atress between first fixed bolster 102 and the second fixed bolster 103 can offset each other, need not to set up ground or heavy base, cost and the area that can greatly reduced test bench, and stable in structure, reliable, be convenient for carry out the bulk movement, need not extra centering, it is more convenient nimble to use, and then can improve the test accuracy.

Specifically, a first support plate and a second support plate are vertically arranged on the bottom plate 101, a first connecting plate 104 and a second connecting plate 105 are vertically arranged on the bottom plate 101, the first support plate and the second support plate are parallel to each other, the first connecting plate 104 and the second connecting plate 105 are parallel to each other, so that the bottom plate 101, the first support plate, the second support plate, the first connecting plate 104 and the second connecting plate 105 can be enclosed to form a rectangular groove, and the torsion tube 2 is located in the rectangular groove, so that the structural stability and the reliability of the test bench 1 are further improved.

Specifically, the first fixing bracket 102 includes a first support plate, a first through hole is formed in the first support plate, the power output shaft 701 of the speed reducer 7 passes through the first through hole to be connected to the first end of the torque cylinder 2, a speed reducer mounting flange 703 is formed on the outer peripheral side of the speed reducer 7, and the speed reducer mounting flange 703 is connected to the first support plate through a second connecting member 14.

Wherein, according to the actual use requirement, the second connecting member 14 can be a bolt, a screw or a pin. It should be understood, however, that the form of the second connector 14 is not limited to the type described above.

Specifically, the second fixing bracket 103 includes a second support plate, the second support plate is provided with a second through hole, the second through hole is concentrically arranged with the first through hole, the second end of the torsion tube 2 passes through the second through hole to be connected with the inner ring flange of the measured torque limiter 4, and the outer ring flange of the measured torque limiter is connected with the second support plate.

Specifically, an annular second connection end plate 202 is arranged at the outer edge of the second end of the torsion tube 2, and the second connection end plate 202 is connected with the inner ring flange of the torque limiter 4 to be measured through the third connecting piece 15. And the outer ring flange of the measured torque limiter 4 is connected with the second support plate through a fourth connecting piece 16. That is, there is no direct connection between the torque tube 2 and the second support plate, so as to ensure the normal operation of the torque tube 2. The torque limiter 4 to be measured is installed on the second extension board one side that is dorsad the first extension board, promptly, the torque limiter 4 to be measured is installed in the rectangle recess outside that test bench 1 formed to convenient realization is to the dismouting and the change of torque limiter 4 to be measured.

Wherein, according to the actual use requirement, the third connecting piece 15 and the fourth connecting piece 16 can adopt bolts, screws or pins. It should be understood, however, that the form of the third connector 15 and the fourth connector 16 is not limited to the type described above.

Specifically, the torque sensor 18 can be mounted on the first connecting plate 104 or the second connecting plate 105 through the connecting bracket 19, so that the torque sensor 18 can be stably and reliably assembled and fixed on the test bed 1.

On the other hand, an embodiment of the present invention further provides a torque limiter testing method, where the method employs the torque limiter testing system of the above embodiment, and the method includes the following steps:

the rotary driving device is started, and the output torque of the rotary driving device is controlled to gradually increase through the control cabinet 3.

When the output torque of the rotary driving device is smaller than the slip torque of the measured torque limiter 4, the rotary driving device, the torque barrel 2 and the measured torque limiter 4 are all in a static state, and no slip occurs in the measured torque limiter 4.

When the output torque of the rotary driving device is larger than or equal to the slip torque of the measured torque limiter 4, the output torque of the rotary driving device is transmitted to the measured torque limiter 4 through the torque barrel 2, so that the measured torque limiter 4 slips and rotates, the data of the rotation angle and the slip torque in the testing process are collected through the angle measuring device, and the collected data are transmitted to the control cabinet 3.

When the collected rotating angle reaches a preset angle, the control cabinet 3 controls the rotation driving device to stop, and meanwhile, a display screen on the control cabinet 3 displays the slipping torque and the change curve thereof in the test process.

Therefore, the torque limiter testing method provided by the embodiment of the invention can monitor the rotation angle and the slip torque of the tested torque limiter 4 and display the change curve of the slip torque in the testing process, thereby effectively verifying the stability and the reliability of the tested torque limiter 4.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.