A high damping composite material transmission shaft comprehensive performance testing machine and testing method thereof

Abstract

The invention discloses a high-damping composite material transmission shaft comprehensive performance testing machine and a testing method thereof, which relate to the technical field of composite material transmission shaft experiments, and include a machine body, a load detection component, a reinforcement component and a vibration detection component. A slide rail is fixedly connected to the machine body, a slide plate is slidably connected to the slide rail, an operating block is installed on the top of the slide plate, a connecting block is fixedly connected to the end of the operating block, a three-claw fixture for fixing the transmission shaft is installed on the end of the connecting block, the load detection component includes a rotating shaft fixedly connected to the three-claw fixture, and an extrusion roller is fitted on the outer side surface of the rotating shaft. The invention can monitor multiple groups of performance of the transmission shaft through the mutual cooperation of the load detection component, the reinforcement component and the vibration detection component, thereby solving the problem of complex and difficult transmission shaft experiments caused by the relatively single function of the transmission shaft testing machine in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of composite material transmission shaft experiments, in particular to a high-damping composite material transmission shaft comprehensive performance testing machine and a testing method thereof. Background Art

[0002] The drive shaft is subjected to complex loads for a long time during use. Therefore, in some special occasions, it is required to have both excellent mechanical properties and vibration and noise reduction properties. The composite drive shaft has excellent mechanical properties, but the damping is small and the vibration and noise reduction performance is limited. Therefore, based on the principle of damping energy dissipation, carbon fiber composite materials and high-damping rubber are introduced into the design of the drive shaft body to construct a high-damping composite drive shaft. By increasing the damping size and control range of the drive shaft, the mechanical properties and vibration and noise reduction performance of the drive shaft can be improved simultaneously.

[0003] At present, in the process of producing composite material transmission shafts, various experiments need to be carried out on them. Through the experimental results, it is clear whether the transmission shaft meets the production needs. In the process of conducting the experiments, various tests need to be carried out on them, such as the mechanical properties and load conditions of the transmission shaft and the use conditions under vibration. However, the transmission shaft testing machine in the prior art has a relatively single function, and most of them are to perform torsion tests on the transmission shaft to analyze its mechanical properties. When conducting experiments on other data, the equipment needs to be replaced, which is more troublesome and will also increase the experimental cost. To this end, the present invention proposes a high-damping composite material transmission shaft comprehensive performance testing machine and a testing method thereof. Summary of the invention

[0004] The object of the present invention is to provide a high-damping composite material transmission shaft comprehensive performance testing machine and a testing method thereof, so as to solve the problems raised in the above-mentioned background technology. In order to achieve the above-mentioned object, the present invention provides the following technical scheme: a high-damping composite material transmission shaft comprehensive performance testing machine, comprising a machine body, a load detection component, a reinforcement component and a vibration detection component, a protective cover is installed on the machine body, and a slide rail is fixedly connected to the machine body, a sliding plate is slidably connected to the slide rail, an operating block is installed on the top of the sliding plate, a connecting block is fixedly connected to the end of the operating block, a three-claw fixture for fixing the transmission shaft is installed on the end of the connecting block, the load detection component comprises a rotating shaft fixedly connected to the three-claw fixture, the rotating shaft extends into the connecting block and is rotatably connected to the connecting block, and the outer portion of the rotating shaft A squeezing roller is fitted on the side, and the load detection component increases the load of the rotating shaft by pressurizing the squeezing roller, thereby detecting the actual situation of the transmission shaft under different load conditions. The reinforcement component is connected to the load detection component, and the reinforcement component is used to reinforce the rotating shaft so that it is locked and cannot rotate. The mechanical properties of the transmission shaft are detected through a torsion experiment. The vibration detection component is arranged in coordination with the load detection component, and the vibration detection component is used to detect the use of the transmission shaft in a vibration environment. The cooperation between the load detection component, the reinforcement component and the vibration detection component facilitates the monitoring of multiple groups of performance of the transmission shaft.

[0005] Preferably, the load detection component includes a movable column fixedly connected to the multiple groups of extrusion rollers respectively, the outer side of the movable column is fixedly connected to a fixed plate, the fixed plate is fixedly connected to a first spring fixedly connected to the connecting block, and the inside of the movable column is fixedly connected to a second spring, the top of the second spring is fixedly connected to a movable plate slidably connected to the movable column, and the movable plate is connected to a movable part for driving the movable plate to move, so as to facilitate experiments on the rotation data of the transmission shaft under different load conditions.

[0006] Preferably, the movable part includes a movable rod fixedly connected to multiple groups of movable plates respectively, the top of the movable rod is fixedly connected to a movable block, the outer side surface of the movable block is sleeved with a sleeve, the top of the sleeve is connected to a connecting pipe, and the end of the connecting pipe is connected to a pressure control part for controlling the air pressure inside the sleeve, so as to drive the movable rod to move.

[0007] Preferably, the pressure controlling part comprises a telescopic rod fixedly connected to the operating block, the telescopic end of the telescopic rod is fixedly connected to a piston block, the outer side surface of the piston block is sleeved with a pressure controlling tube installed inside the connecting block, the end of the pressure controlling tube is connected to a collecting pipe, and the collecting pipe is connected to multiple groups of the connecting pipes to facilitate control of the air pressure inside the sleeve, the sleeve and the sleeve rod.

[0008] Preferably, the reinforcement component includes a first extrusion block fixedly connected to the rotating shaft, a second extrusion block is installed at one end of the first extrusion block, contact surfaces of the first extrusion block and the second extrusion block are provided with anti-slip teeth, one end of the second extrusion block is fixedly connected to a sliding rod, one end of the sliding rod is fixedly connected to a sliding block, an outer side surface of the sliding block is sleeved, and an end of the sleeve is connected to a sealing tube connected to the collecting pipe, and a sealing member is installed inside the sealing tube, so as to reinforce the fixation of the rotating shaft so that the rotating shaft is locked and cannot rotate.

[0009] Preferably, the sealing member comprises a supporting plate fixed inside the sealing tube, the supporting plate being provided with a plurality of through holes, and the supporting plate being fixedly connected with a fixing column, the fixing column being slidably connected with a sealing plate, the outer side surface of the sealing plate being movably connected with a sealing ring fixedly connected with the sealing tube, and a third spring being fixedly connected between the sealing plate and the supporting plate, so as to facilitate sealing of the sealing tube and enable the reinforcement assembly to operate last.

[0010] Preferably, the vibration detection component includes a fourth spring installed between the operating block and the sliding plate, the two ends of the fourth spring are fixedly connected to the operating block and the sliding plate respectively, a plug rod plugged into the sliding plate is installed at the center position of the fourth spring, and a slot adapted to the plug rod is opened on the sliding plate, and an extrusion piece for squeezing the plug rod to move is fixedly connected to the top end of the plug rod, so as to facilitate the detection of the condition of the transmission shaft under a vibration environment.

[0011] Preferably, the extrusion piece includes a connecting pipe connected to the collecting pipe, an electromagnetic valve is installed on the connecting pipe, and the end of the connecting pipe is connected to a sleeve rod, and an extrusion sheet fixedly connected to the insertion rod is slidably connected inside the sleeve rod to facilitate the movement of the extruded insertion rod so that the insertion rod can be inserted into the slot.

[0012] Preferably, the insertion rod and the fourth spring are both provided in multiple groups, and the end of the insertion rod is set in a cone shape, and the fourth spring is provided in multiple groups, so as to increase the stability of the operating block and avoid excessive vibration of the operating block. The end of the insertion rod is set in a cone shape, which makes it easier for the insertion rod to be inserted into the slot.

[0013] A test method for a high damping composite material transmission shaft comprehensive performance tester comprises the following steps:

[0014] S1: First, the rotation of the transmission shaft under different load conditions is tested separately;

[0015] S2: Testing the rotation of the transmission shaft under vibration separately;

[0016] S3: Then, the rotation of the transmission shaft under vibration and different load environments is detected, and the load condition of the transmission shaft under vibration is detected through the vibration of the third spring and the load change of the transmission shaft;

[0017] S4: Finally, the transmission shaft is subjected to a torsion test by locking the rotating shaft, thereby reflecting the mechanical properties of the transmission shaft;

[0018] S5: After all items are tested, all devices are reset.

[0019] The present invention has at least the following beneficial effects:

[0020] The present invention provides a test method for a high-damping composite material transmission shaft comprehensive performance testing machine. In the process of experimenting on the performance of the transmission shaft, first, the load on the rotation of the transmission shaft is gradually increased through the action of a load detection component, and then the rotation data of the transmission shaft under different load conditions is detected, and then the rotation data of the transmission shaft under vibration is detected by the vibration detection component. After both are detected, the rotation data of the transmission shaft under vibration and different load conditions are detected through the cooperation of the vibration detection component and the load detection component. Finally, the rotating shaft is locked through the action of the reinforcement component, so that the transmission shaft cannot drive the rotating shaft to continue rotating during the rotation process. At this time, it is equivalent to performing a torsion test on the transmission shaft to analyze the mechanical properties of the transmission shaft, and then through the mutual cooperation of the load detection component, the reinforcement component and the vibration detection component, multiple groups of performance of the transmission shaft can be monitored, thereby solving the problem of complex and difficult transmission shaft experiments caused by the relatively single function of the transmission shaft testing machine in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the load detection component of the present invention;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the middle A area;

[0025] Figure 5 It is a schematic diagram of the structure of the moving part of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection structure between the pressure control member and the reinforcement component of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the reinforcement assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the vibration detection component of the present invention;

[0029] Fig. 9 This is a schematic diagram of the structure of the extruded part of the present invention.

[0030] In the figure: 1-body; 2-protective cover; 3-slide rail; 4-slide plate; 5-operating block; 6-connecting block; 7-three-claw fixer; 8-load detection component; 9-rotating shaft; 10-squeezing roller; 11-reinforcement component; 12-vibration detection component; 13-movable column; 14-fixed plate; 15-first spring; 16-second spring; 17-movable plate; 18-moving member; 19-moving rod; 20-moving block; 21-sleeve; 22-connecting pipe; 23-pressure control member; 24-telescopic rod; 25- Piston block; 26-pressure control tube; 27-collecting pipe; 28-first extrusion block; 29-second extrusion block; 30-anti-slip teeth; 31-sliding rod; 32-sliding block; 33-sleeve; 34-sealing tube; 35-sealing member; 36-support plate; 37-through hole; 38-fixing column; 39-sealing plate; 40-sealing ring; 41-third spring; 42-fourth spring; 43-insertion rod; 44-slot; 45-extrusion member; 46-connecting pipe; 47-solenoid valve; 48-sleeve rod; 49-extrusion plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-9The present invention provides a technical solution: a high damping composite material transmission shaft comprehensive performance testing machine, comprising a machine body 1, a load detection component 8, a reinforcement component 11 and a vibration detection component 12, a protective cover 2 is installed on the machine body 1, and a slide rail 3 is fixedly connected to the machine body 1, a sliding plate 4 is slidably connected to the slide rail 3, an operating block 5 is installed on the top of the sliding plate 4, a connecting block 6 is fixedly connected to the end of the operating block 5, a three-claw fixture 7 for fixing the transmission shaft is installed on the end of the connecting block 6, the load detection component 8 includes a rotating shaft 9 fixedly connected to the three-claw fixture 7, and the rotating shaft 9 extends to the connecting block 6 The shaft 9 is internally and rotatably connected to the connecting block 6; a squeezing roller 10 is fitted on the outer side of the rotating shaft 9; the load detection component 8 increases the load of the rotating shaft 9 by applying pressure to the squeezing roller 10, thereby detecting the actual situation of the transmission shaft under different load conditions; the reinforcement component 11 is connected to the load detection component 8, and the reinforcement component 11 is used to reinforce the rotating shaft 9 so that it is locked and cannot rotate; the mechanical properties of the transmission shaft are detected through a torsion experiment; the vibration detection component 12 is arranged in conjunction with the load detection component 8, and the vibration detection component 12 is used to detect the use of the transmission shaft in a vibration environment.

[0033] A test method for a high damping composite material transmission shaft comprehensive performance tester comprises the following steps:

[0034] S1: First, the rotation of the transmission shaft under different load conditions is tested separately;

[0035] S2: Testing the rotation of the transmission shaft under vibration separately;

[0036] S3: Then, the rotation of the transmission shaft under vibration and different load environments is detected, and the load condition of the transmission shaft under vibration is detected through the vibration of the third spring and the load change of the transmission shaft;

[0037] S4: Finally, the transmission shaft is subjected to a torsion test by locking the rotating shaft, thereby reflecting the mechanical properties of the transmission shaft;

[0038] S5: After all items are tested, all devices are reset.

[0039] In this scheme, during the experiment of the performance of the transmission shaft, one end of the transmission shaft is fixed on the machine body 1, and then the operation block 5 drives the three-claw fixer 7 to move by sliding the sliding plate 4. (The three-claw fixer 7 in this scheme is a prior art, and the three claws are simultaneously retracted and expanded by twisting the handle arranged on the three-claw fixer 7. The transmission shaft is fixed by retracting the three claws at the same time, and the transmission shaft can be loosened by expanding them at the same time.) Then, the other end of the transmission shaft is fixed by the three-claw fixer 7. At this time, the extrusion roller 10 is used to squeeze the rotating shaft 9 by the action of the load detection component 8, so that the rotation resistance of the rotating shaft 9 increases. , thereby increasing the rotational resistance of the three-claw fixer 7 and the transmission shaft. Therefore, by applying different extrusion forces to the extrusion roller 10, the rotational loads of the rotating shaft 9 and the transmission shaft are different. Therefore, the rotation of the transmission shaft under different loads is detected, and then the condition of the transmission shaft in a vibration environment is detected through the action of the vibration detection component 12. After that, the condition of the transmission shaft under different loads in a vibration environment is detected through the cooperation of the vibration detection component 12 and the load detection component 8. Finally, the rotating shaft 9 is locked through the cooperation of the reinforcement component 11 and the load detection component 8. At this time, the machine body 1 performs a torsion test on the transmission shaft to detect the mechanical properties of the transmission shaft.

[0040] The load detection assembly 8 includes a movable column 13 fixedly connected to the plurality of groups of squeezing rollers 10, the outer side of the movable column 13 is fixedly connected to a fixed sheet 14, the fixed sheet 14 is fixedly connected to a first spring 15 fixedly connected to the connecting block 6, and the inside of the movable column 13 is fixedly connected to a second spring 16, the top of the second spring 16 is fixedly connected to a movable sheet 17 slidably connected to the movable column 13, and the movable sheet 17 is connected to a moving member 18 for driving the movable sheet 17 to move; the movable The component 18 comprises a moving rod 19 fixedly connected to the plurality of groups of movable sheets 17, the top of the moving rod 19 is fixedly connected to a moving block 20, the outer side of the moving block 20 is sleeved with a sleeve 21, the top of the sleeve 21 is connected to a connecting pipe 22, the end of the connecting pipe 22 is connected to a pressure control component 23 for controlling the internal air pressure of the sleeve 21; the pressure control component 23 comprises a telescopic rod 24 fixedly connected to the operating block 5, the telescopic end of the telescopic rod 24 is fixedly connected to a piston block 25, the outer side of the piston block 25 ... The side sleeve is provided with a pressure control tube 26 installed inside the connecting block 6, and the end of the pressure control tube 26 is connected with a collection tube 27, and the collection tube 27 is connected with multiple groups of the connecting tubes 22; the vibration detection component 12 includes a fourth spring 42 installed between the operating block 5 and the sliding plate 4, and the two ends of the fourth spring 42 are respectively fixedly connected to the operating block 5 and the sliding plate 4, and the center position of the fourth spring 42 is provided with a plug rod 43 plugged with the sliding plate 4, and the sliding plate 4 is provided with a plug rod 43 plugged with the sliding plate 4. The insertion rod 43 is matched with a slot 44, and the top end of the insertion rod 43 is fixedly connected with an extrusion piece 45 for squeezing the insertion rod 43 to move; the extrusion piece 45 includes a connecting pipe 46 connected to the collecting pipe 27, and a solenoid valve 47 is installed on the connecting pipe 46, and the end of the connecting pipe 46 is connected to a sleeve rod 48, and an extrusion sheet 49 fixedly connected to the insertion rod 43 is slidably connected in the sleeve rod 48. The insertion rod 43 and the fourth spring 42 are both provided with multiple groups, and the end of the insertion rod 43 is set in a cone.

[0041] In this solution, in the initial state, the insertion rod 43 is located inside the slot 44. At this time, the operating block 5 remains stable due to the action of the insertion rod 43 and will not be affected by the vibration of the fourth spring 42. At this time, the piston block 25 is moved by the activation of the telescopic rod 24. The movement of the piston block 25 causes the gas inside the pressure control tube 26 to be squeezed into the inside of the connecting tube 22, and then the gas is squeezed into the inside of the sleeve 21 through the connecting tube 22, so that the air pressure inside the sleeve 21 increases. Therefore, the moving block 20 is moved by the action of the air pressure, and then the moving rod 19 drives the movable sheet 17 to move, and then the second spring 16 is compressed by the movement of the moving rod 19 and the movable sheet 17, and then the squeezing force of the movable column 13 and the squeezing roller 10 on the rotating shaft 9 is gradually compressed. It gradually increases. As the squeezing force of the squeezing roller 10 on the rotating shaft 9 increases, the friction force of the rotating shaft 9 increases when the rotating shaft 9 rotates, thereby increasing the rotational load of the rotating shaft 9 when the rotating shaft 9 rotates. The rotating shaft 9 is fixedly connected to the three-claw fixture 7, and the three-claw fixture 7 fixes the detected transmission shaft. Therefore, after the rotational load of the rotating shaft 9 increases, the rotational resistance of the three-claw fixture 7 and the detected transmission shaft all increase accordingly. Therefore, different squeezing forces are applied to the rotating shaft 9 by the squeezing roller 10, so that the resistance of the rotating shaft 9 when it rotates changes. The change in resistance of the rotating shaft 9 reflects the change in the rotational resistance (or rotational load) of the detected transmission shaft. Whether the transmission shaft can maintain a good dynamic balance during operation with different loads is observed by the change in resistance of the transmission shaft.

[0042] In this solution, after the above process is detected, the resetting of the telescopic rod 24 causes the moving block 20 to drive the moving rod 19 to reset, and the moving rod 19 drives the movable sheet 17 to reset, so that the squeezing roller 10 cancels the squeezing of the rotating shaft 9, thereby restoring the load of the rotating shaft 9 to the initial state. After the telescopic rod 24 is reset, the solenoid valve 47 is opened, and then the telescopic rod 24 is continued to be retracted. At this time, the moving block 20 will not continue to move due to the reset, and the solenoid valve 47 is opened. Through the retraction of the telescopic rod 24, the gas inside the connecting pipe 46 and the sleeve rod 48 is sucked into the pressure control pipe 26. At this time, the internal air pressure of the sleeve rod 48 is reduced to generate a negative pressure. The fourth spring 42 is used to press the drive shaft 42, thereby causing the extrusion sheet 49 to drive the insertion rod 43 to move upward and away from the slot 44. At this time, since there is no connection between the insertion rod 43 and the sliding plate 4, the operating block 5 is mainly supported by the fourth spring 42. At this time, the machine body 1 is started to rotate the transmission shaft. During the rotation, the fourth spring 42 causes the operating block 5 to vibrate, thereby causing the transmission shaft to be used in a vibrating environment. After the tested transmission shaft has been rotated and tested in a vibrating environment for a period of time, the transmission shaft is disassembled, and then the degree of wear and deformation of the transmission shaft are observed to determine whether the transmission shaft meets the production standards. This process can detect the vibration resistance of the transmission shaft.

[0043] In this solution, after the above process is detected, the solenoid valve 47 is closed, and the telescopic rod 24 is controlled to extend. Due to the closure of the solenoid valve 47, the gas will not enter the connecting pipe 46, and then the gas inside the pressure control tube 26 enters the sleeve 21 through the connecting pipe 22 through the movement of the piston block 25, and then the moving block 20 drives the moving rod 19 to move, and then the movable sheet 17 moves to squeeze the second spring 16, and then in the process of the movement of the piston block 25, the rotation load of the rotating shaft 9, the three-claw fixer 7 and the transmission shaft gradually increases, and because the insertion rod 43 is away from the slot 44 at this time, the operating block 5 is still in a vibrating state, so at this time The rotation of the transmission shaft when different loads are applied under a vibration environment is detected under the state. Under the vibration state, the detected transmission shaft is rotated for a period of time under different rotation loads, and the rotation time of the transmission shaft under different load conditions is the same. In this process, the transmission shafts under different load conditions are disassembled one by one, and the performance of the transmission shaft is determined by observing the deformation and wear degree of the transmission shaft under different loads. By comparing the data under different load conditions, it can be concluded that in which state the operation process of the transmission shaft is more stable and durable. In this process, the vibration resistance of the transmission shaft under different load conditions can be detected, and it can be understood in which state the transmission shaft runs more stably.

[0044] The reinforcement assembly 11 includes a first extrusion block 28 fixedly connected to the rotating shaft 9, a second extrusion block 29 is installed at one end of the first extrusion block 28, and the contact surfaces of the first extrusion block 28 and the second extrusion block 29 are both provided with anti-slip teeth 30, a sliding rod 31 is fixedly connected to one end of the second extrusion block 29, and a sliding block 32 is fixedly connected to one end of the sliding rod 31, and a sleeve 33 is sleeved on the outer side of the sliding block 32, and the end of the sleeve 33 is connected to a sealing tube 34 connected to the collecting pipe 27, and a sealing member 35 is installed inside the sealing tube 34; the sealing member 35 includes a supporting sheet 36 fixed to the inside of the sealing tube 34, a plurality of groups of through holes 37 are provided on the supporting sheet 36, and a fixing column 38 is fixedly connected to the supporting sheet 36, and a sealing sheet 39 is slidably connected to the fixing column 38, and a sealing ring 40 fixedly connected to the sealing tube 34 is movably connected to the outer side of the sealing sheet 39, and a third spring 41 is fixedly connected between the sealing sheet 39 and the supporting sheet 36.

[0045] In this solution, after all the previous items have been tested, the solenoid valve 47 is opened and the telescopic rod 24 continues to extend. At this time, since the movable sheet 17 will not continue to move, and the gas will not enter the sleeve 21, the gas inside the pressure control tube 26 will enter the sleeve rod 48 through the connecting tube 46, and then the extrusion sheet 49 drives the insertion rod 43 to move, so that the insertion rod 43 is inserted into the slot 44, thereby ensuring the stability of the operating block 5, and then the telescopic rod 24 is continued to be controlled to extend. At this time, since the movable sheet 17 cannot continue to move and the solenoid valve 47 is closed, the gas cannot enter the connecting tube 22 and the connecting tube 46, and then the gas will all enter the sealing tube 34. The sealing sheet 39 compresses the third spring 41 through sufficient air pressure to move, so that the sealing sheet 39 is away from the sealing ring 40, so the gas enters the sealing tube 34 through the gap between the sealing sheet 39 and the sealing ring 40, and then enters the sleeve 33 to increase the air pressure inside the sleeve 33. Therefore, the sliding block 32 drives the sliding rod 31 to move through the action of the air pressure, and then the second extrusion block 29 fixedly connected thereto moves. The first extrusion block 28 is extruded by the movement of the second extrusion block 29, and then the extrusion roller 10 extrudes the rotating shaft 9 to lock the rotating shaft 9. At this time, the three-claw fixer 7 cannot rotate. In this state, the body 1 performs a torsion test on the rotating shaft 9. The torsion test is a test to determine the material's resistance to torque, and is one of the basic test methods for testing the mechanical properties of materials. Through this experiment, it can be known whether the mechanical properties of the drive shaft meet the standards.

[0046] Working principle: During the experiment on the performance of the transmission shaft, one end of the transmission shaft is fixed on the machine body 1, and then the operating block 5 drives the three-claw fixer 7 to move by sliding the sliding plate 4 (the three-claw fixer 7 in this scheme is the prior art, and the three claws are simultaneously retracted and expanded by twisting the handle arranged on the three-claw fixer 7 forward and reversely, and the transmission shaft is fixed by the simultaneous retraction of the three claws, and the simultaneous expansion can loosen the transmission shaft), and then the other end of the transmission shaft is fixed by the three-claw fixer 7, and then various experimental tests are carried out on the transmission shaft. The experimental process is as follows:

[0047] First, the rotation of the drive shaft under different load conditions is tested separately:

[0048] In the initial state, the insertion rod 43 is located inside the slot 44. At this time, the operating block 5 remains stable due to the action of the insertion rod 43 and will not be affected by the vibration of the fourth spring 42. At this time, the piston block 25 is moved by the activation of the telescopic rod 24. The movement of the piston block 25 squeezes the gas inside the pressure control tube 26 into the connecting tube 22, and then squeezes the gas into the sleeve 21 through the connecting tube 22, so that the air pressure inside the sleeve 21 increases. Therefore, the moving block 20 moves through the action of the air pressure, and then the moving rod 19 drives the movable sheet 17 to move, and then the second spring 16 is compressed through the movement of the moving rod 19 and the movable sheet 17, and then the squeezing force of the movable column 13 and the squeezing roller 10 on the rotating shaft 9 is gradually increased through the gradual compression of the second spring 16. Increase, because the squeezing force of the squeezing roller 10 on the rotating shaft 9 increases, the friction force of the rotating shaft 9 increases when the rotating shaft 9 rotates, so that the rotation load of the rotating shaft 9 increases when the rotating shaft 9 rotates, and the rotating shaft 9 is fixedly connected to the three-claw fixture 7, and the three-claw fixture 7 fixes the detected transmission shaft. Therefore, after the rotation load of the rotating shaft 9 increases, the rotation resistance of the three-claw fixture 7 and the detected transmission shaft all increase accordingly. Therefore, different squeezing forces are applied to the rotating shaft 9 by the squeezing roller 10, so that the resistance of the rotating shaft 9 changes when it rotates. The change in the resistance of the rotating shaft 9 reflects the change in the rotation resistance (also known as the rotation load) of the detected transmission shaft. Whether the transmission shaft can maintain a good dynamic balance during the operation of different loads is observed by the change in the resistance of the transmission shaft;

[0049] Second, test the rotation of the drive shaft under vibration alone:

[0050] After the above process is detected, the moving block 20 drives the moving rod 19 to reset through the resetting of the telescopic rod 24, and the moving rod 19 drives the movable sheet 17 to reset, so that the squeezing roller 10 cancels the squeezing of the rotating shaft 9, thereby restoring the load of the rotating shaft 9 to the initial state. After the telescopic rod 24 is reset, the solenoid valve 47 is opened, and then the telescopic rod 24 is continued to be retracted. At this time, the moving block 20 will not continue to move due to the reset, and the solenoid valve 47 is opened. Through the retraction of the telescopic rod 24, the gas inside the connecting pipe 46 and the sleeve rod 48 is sucked into the pressure control pipe 26. At this time, the air pressure inside the sleeve rod 48 is reduced to generate negative pressure, and the telescopic rod 24 is retracted. The extrusion sheet 49 drives the insertion rod 43 to move upward and away from the slot 44. At this time, since there is no connection between the insertion rod 43 and the sliding plate 4, the operating block 5 is mainly supported by the fourth spring 42. At this time, the body 1 is started to rotate the transmission shaft. During the rotation process, the operating block 5 vibrates due to the action of the fourth spring 42, so that the transmission shaft is used in a vibrating environment. After the transmission shaft to be tested is rotated in the vibration environment for a period of time, the transmission shaft is disassembled, and then the wear degree and deformation amount of the transmission shaft are observed to determine whether the transmission shaft meets the production standard. This process can detect the vibration resistance of the transmission shaft.

[0051] Third, test the rotation of the drive shaft under different loads in a vibration environment:

[0052] After the above process is detected, the solenoid valve 47 is closed, and the telescopic rod 24 is controlled to extend. Due to the closure of the solenoid valve 47, the gas will not enter the connecting pipe 46, and then the gas inside the pressure control tube 26 will enter the sleeve 21 through the connecting pipe 22 through the movement of the piston block 25, and then the moving block 20 drives the moving rod 19 to move, and then the movable sheet 17 moves to squeeze the second spring 16, and then in the process of the movement of the piston block 25, the rotation load of the rotating shaft 9, the three-claw fixer 7 and the transmission shaft gradually increases. At this time, because the insertion rod 43 is far away from the slot 44, the operating block 5 is still in a vibrating state, so in this state Detect the rotation of the transmission shaft when different loads are applied under a vibration environment. Under the vibration state, the transmission shaft to be tested is rotated for a period of time under different rotation loads, and the rotation time of the transmission shaft under different load conditions is the same. In this process, the transmission shafts under different load conditions are disassembled in turn, and the performance of the transmission shaft is determined by observing the deformation and wear degree of the transmission shaft under different loads. By comparing the data under different load conditions, it can be determined in which state the operation process of the transmission shaft is more stable and durable. In this process, the vibration resistance of the transmission shaft under different load conditions can be detected, and it can be understood in which state the transmission shaft runs more stably;

[0053] Fourth, perform a torsion test on the drive shaft:

[0054] After all the previous items have been tested, the solenoid valve 47 is opened and the telescopic rod 24 continues to extend. At this time, since the movable sheet 17 will not continue to move, and the gas will not enter the sleeve 21, the gas inside the pressure control tube 26 will enter the sleeve rod 48 through the connecting tube 46, and then the extrusion sheet 49 drives the insertion rod 43 to move, so that the insertion rod 43 is inserted into the slot 44, thereby ensuring the stability of the operating block 5, and then the telescopic rod 24 is continued to be controlled to extend. At this time, since the movable sheet 17 cannot continue to move and the solenoid valve 47 is closed, the gas cannot enter the connecting pipe 22 and the connecting pipe 46, and then the gas will all enter the sealing tube 34. The sealing sheet 39 compresses the third spring 41 through sufficient air pressure to move, so that the sealing sheet 39 is far away. The gas enters the sealing tube 34 through the gap between the sealing sheet 39 and the sealing ring 40, and then enters the sleeve 33 to increase the air pressure inside the sleeve 33. Therefore, the sliding block 32 drives the sliding rod 31 to move through the air pressure, and then the second extrusion block 29 fixedly connected thereto moves. The first extrusion block 28 is extruded through the movement of the second extrusion block 29, and then the extrusion roller 10 extrudes the rotating shaft 9 to lock the rotating shaft 9. At this time, the three-claw fixer 7 cannot rotate. In this state, the body 1 performs a torsion test on the rotating shaft 9. The torsion test is a test to determine the material's resistance to torque, and is one of the basic test methods for material mechanical property tests. Through this experiment, it can be known whether the mechanical properties of the transmission shaft meet the standards;

[0055] Fifth, reset the device:

[0056] After all the experiments are completed, the telescopic rod 24 is reset to drive the movable sheet 17 and the sliding rod 31 to reset, so that the second spring 16 and the second extrusion block 29 are all reset, which is convenient for the next group of transmission shafts to be tested.

[0057] It is noted that, in this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high damping composite material transmission shaft comprehensive performance testing machine, comprising: A machine body (1), a protective cover (2) being installed on the machine body (1), a slide rail (3) being fixedly connected to the machine body (1), a slide plate (4) being slidably connected to the slide rail (3), an operating block (5) being installed at the top end of the slide plate (4), a connecting block (6) being fixedly connected at the end of the operating block (5), and a three-claw fixing device (7) for fixing a transmission shaft being installed at the end of the connecting block (6); It is characterized by further comprising: A load detection component (8), the load detection component (8) comprising a rotating shaft (9) fixedly connected to the three-claw fixture (7), the rotating shaft (9) extending into the connecting block (6) and being rotatably connected to the connecting block (6), a squeezing roller (10) being fitted on the outer side surface of the rotating shaft (9), the load detection component (8) increasing the load of the rotating shaft (9) by applying pressure to the squeezing roller (10), thereby detecting the actual conditions of the transmission shaft under different load conditions; A reinforcement component (11), the reinforcement component (11) being connected to the load detection component (8), and the reinforcement component (11) being used to reinforce the rotating shaft (9) so that it is locked and cannot rotate, and to detect the mechanical properties of the transmission shaft through a torsion test; A vibration detection component (12), the vibration detection component (12) being arranged in cooperation with the load detection component (8), and the vibration detection component (12) being used to detect the use condition of the transmission shaft in a vibration environment; The load detection assembly (8) comprises a movable column (13) respectively fixedly connected to the plurality of groups of squeezing rollers (10); a fixed plate (14) is fixedly connected to the outer side surface of the movable column (13); a first spring (15) fixedly connected to the connecting block (6) is fixedly connected to the fixed plate (14); a second spring (16) is fixedly connected inside the movable column (13); a movable plate (17) slidably connected to the movable column (13) is fixedly connected to the top end of the second spring (16); and a moving member (18) for driving the movable plate (17) to move is connected to the movable plate (17); The moving member (18) comprises a moving rod (19) fixedly connected to the plurality of groups of the moving plates (17), the top end of the moving rod (19) being fixedly connected to a moving block (20), the outer side surface of the moving block (20) being sleeved with a sleeve (21), the top end of the sleeve (21) being connected to a connecting pipe (22), the end of the connecting pipe (22) being connected to a pressure control member (23) for controlling the internal air pressure of the sleeve (21); The pressure control member (23) comprises a telescopic rod (24) fixedly connected to the operating block (5); the telescopic end of the telescopic rod (24) is fixedly connected to a piston block (25); the outer side surface of the piston block (25) is sleeved with a pressure control tube (26) installed inside the connecting block (6); the end of the pressure control tube (26) is connected to a collecting tube (27); the collecting tube (27) is connected to the plurality of groups of connecting tubes (22); The reinforcement component (11) comprises a first extrusion block (28) fixedly connected to the rotating shaft (9), a second extrusion block (29) being mounted on one end of the first extrusion block (28), anti-slip teeth (30) being arranged on the contacting surfaces of the first extrusion block (28) and the second extrusion block (29), a sliding rod (31) being fixedly connected to one end of the second extrusion block (29), a sliding block (32) being fixedly connected to one end of the sliding rod (31), a sleeve (33) being sleeved on the outer side surface of the sliding block (32), and a sealing tube (34) being connected to the collecting tube (27) being connected to the end of the sleeve (33), and a sealing member (35) being mounted inside the sealing tube (34); The vibration detection component (12) comprises a fourth spring (42) installed between the operating block (5) and the sliding plate (4), the two ends of the fourth spring (42) being fixedly connected to the operating block (5) and the sliding plate (4) respectively, a plug rod (43) plugged into the sliding plate (4) being installed at the center of the fourth spring (42), a slot (44) adapted to the plug rod (43) being provided on the sliding plate (4), and a pressing piece (45) for pressing the plug rod (43) to move being fixedly connected to the top end of the plug rod (43); The extrusion member (45) comprises a connecting pipe (46) connected to the collecting pipe (27), a solenoid valve (47) being installed on the connecting pipe (46), and an end of the connecting pipe (46) being connected to a sleeve rod (48), an extrusion sheet (49) fixedly connected to the insertion rod (43) being slidably connected inside the sleeve rod (48).

2. The high damping composite material transmission shaft comprehensive performance testing machine according to claim 1, characterized in that: The sealing member (35) comprises a support sheet (36) fixed inside the sealing tube (34), the support sheet (36) being provided with a plurality of through holes (37), a fixing column (38) being fixedly connected to the support sheet (36), a sealing sheet (39) being slidably connected to the fixing column (38), a sealing ring (40) fixedly connected to the sealing tube (34) being movably connected to the outer side surface of the sealing sheet (39), and a third spring (41) being fixedly connected between the sealing sheet (39) and the support sheet (36).

3. The high damping composite material transmission shaft comprehensive performance testing machine according to claim 2, characterized in that: The insertion rod (43) and the fourth spring (42) are both provided in multiple groups, and the end of the insertion rod (43) is provided in a conical shape.

4. The test method of a high damping composite material transmission shaft comprehensive performance tester according to any one of claims 2-3, characterized in that: The following steps are involved: S1: First, the rotation of the transmission shaft under different load conditions is tested separately; S2: Testing the rotation of the transmission shaft under vibration separately; S3: Then, the rotation of the transmission shaft under vibration and different load environments is detected, and the load condition of the transmission shaft under vibration is detected through the vibration of the third spring and the load change of the transmission shaft; S4: Finally, the transmission shaft is subjected to a torsion test by locking the rotating shaft, thereby reflecting the mechanical properties of the transmission shaft; S5: After all items are tested, all devices are reset.

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