Air cylinder torsion spring fatigue testing machine

Abstract

The utility model provides an air cylinder torsion spring fatigue testing machine which comprises a base, a rotating clamping plate, an air cylinder assembly and an ejector rod, a first rotating shaft rod is arranged between the rotating clamping plate and the base, and the rotating clamping plate is rotationally connected with the base through the first rotating shaft rod. The air cylinder assembly is arranged on the base. The ejector rod is in transmission connection with the air cylinder assembly and pushes the rotating clamping plate to rotate around the first rotating shaft rod. The first rotating shaft rod is sleeved with the torsion springs, one end of one torsion spring is fixed to the base, the other end of the same torsion spring is fixed to the rotating clamping plate, and the rotating clamping plate drives the torsion springs to twist. According to the air cylinder torsion spring fatigue testing machine, the ejector rod is driven through the air cylinder assembly, and the rotary clamping plate is pushed through the ejector rod, so that the torsion spring is twisted. Compared with a traditional motor driving mode, more stable force can be provided through air cylinder driving, so that fluctuation and accumulative errors of the force in the testing process are reduced, and meanwhile equipment loss caused by frequent forward and reverse rotation of the motor is avoided.

Description

Technical Field

[0001] The present application relates to the field of torsion spring fatigue testing, and in particular to a cylinder torsion spring fatigue testing machine. Background Art

[0002] Torsion springs are widely used in various mechanical devices, especially in places where energy needs to be stored and released, such as automobiles, aircraft, and household appliances. In these applications, the performance of torsion springs directly affects the reliability and service life of the entire device. Therefore, fatigue testing of torsion springs is crucial to ensure that they can maintain good performance in actual use.

[0003] Traditional torsion spring fatigue testing machines are usually driven by motors, and the torsion springs are twisted and restored by the forward and reverse rotation of the motor. Although this method can meet basic testing needs, it has some obvious defects. First, the motor needs to rotate forward and reverse continuously during the test. This frequent change of direction will have an adverse effect on the service life of the motor. Because every time the direction of the motor changes, the internal mechanical components, such as gears, bearings, and rotors, will experience a sudden change in force direction. This change will produce instantaneous mechanical stress, aggravating the wear and aging of these components. Secondly, the motor directly drives the torsion spring, and it is easy to have unstable force during the torsion process. Because there is vibration during the operation of the motor, this force instability will cause cumulative errors in the test results, thereby affecting the accuracy of the test.

[0004] Therefore, it is necessary to propose a new type of torsion spring fatigue testing machine to solve the problem that the traditional torsion spring fatigue testing machine is unstable during the experiment and has a short service life because it uses a motor to drive the torsion spring to twist and restore. Utility Model Content

[0005] In view of this, it is necessary to provide a cylinder torsion spring fatigue testing machine, which utilizes a cylinder assembly to push and rotate a clamping plate to cause the torsion spring to twist, so as to solve the above problem.

[0006] The embodiment of the present application provides a cylinder torsion spring fatigue testing machine, comprising:

[0007] Pedestal;

[0008] A rotating clamping plate, wherein a first rotating shaft is provided between the rotating clamping plate and the base, and the rotating clamping plate and the base are rotatably connected via the first rotating shaft;

[0009] A cylinder assembly, arranged on the base;

[0010] A push rod, the push rod is in transmission connection with the cylinder assembly, the cylinder assembly pushes the push rod to move along the length direction of the push rod, the rotating clamping plate is located on the movement path of the push rod, and the push rod pushes the rotating clamping plate to rotate around the first rotating shaft;

[0011] The torsion spring is sleeved on the first rotating shaft, one end of a torsion spring is fixed on the base, and the other end of the same torsion spring is fixed on the rotating clamping plate, and the rotating clamping plate drives the torsion spring to twist.

[0012] In at least one embodiment of the present application, a sliding wheel is provided at one end of the push rod close to the rotating splint, the sliding wheel is rotatably connected to the push rod, the sliding wheel is in contact with the rotating splint, and the push rod pushes the sliding wheel to roll on the rotating splint.

[0013] In at least one embodiment of the present application, the rotating clamping plate includes a clamping plate body rotatably connected to the first rotating shaft and a top block provided on the clamping plate body, wherein the top block protrudes from the clamping plate body, the top block is located on the rolling path of the sliding wheel, and the top block blocks the rolling of the sliding wheel;

[0014] The push rod pushes the sliding wheel to move until it fits with the push block, and the rotating clamping plate stops rotating.

[0015] In at least one embodiment of the present application, the rotating clamp includes a rotating plate and a track plate detachably connected to the rotating plate, the track plate is located between the top rod and the rotating plate, the sliding wheel is in contact with the track plate, the top rod pushes the track plate, and the track plate drives the rotating plate to rotate around the first rotating shaft.

[0016] In at least one embodiment of the present application, the track plate is connected to the rotating plate by bolts.

[0017] In at least one embodiment of the present application, the top block and the track plate are formed integrally.

[0018] In at least one embodiment of the present application, the base includes a load-bearing plate, a first support member arranged on the load-bearing plate, and a clamping table arranged on the load-bearing plate, the cylinder assembly is arranged on the first support member, and one end of the torsion spring is fixed to the clamping table.

[0019] In at least one embodiment of the present application, the cylinder assembly includes a cylinder body transmission-connected to the push rod, a fixed block arranged on the first support member, and a second rotating shaft arranged between the cylinder body and the fixed block, and the cylinder body is rotationally connected to the fixed block via the second rotating shaft.

[0020] In at least one embodiment of the present application, the cylinder torsion spring fatigue testing machine further includes a second support member, one end of the cylinder body is rotatably connected to the first support member, and the other end of the cylinder body is disposed on the second support member.

[0021] In at least one embodiment of the present application, a torsion spring groove is provided on the fixture table, and a torsion spring is placed in the torsion spring groove.

[0022] The cylinder torsion spring fatigue tester provided above drives the push rod through the cylinder assembly, and the push rod pushes the rotating clamp plate to twist the torsion spring. Compared with the traditional motor drive method, the cylinder drive can provide a more stable force, thereby reducing the force fluctuation and cumulative error during the test, and avoiding the loss of equipment caused by frequent forward and reverse rotation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural stereogram of a cylinder torsion spring fatigue testing machine;

[0024] Figure 2 This is a three-dimensional structural diagram of the cylinder torsion spring fatigue testing machine.

[0025] Main component symbols

[0026] 100. Cylinder torsion spring fatigue testing machine; 1. base; 11. load-bearing plate; 12. first support member; 13. fixture table; 131. torsion spring groove; 2. rotating clamp plate; 21. top block; 22. clamp plate body; 221. rotating plate; 222. track plate; 3. cylinder assembly; 31. cylinder body; 32. second rotating shaft rod; 33. fixed block; 4. top rod; 41. sliding wheel; 5. first rotating shaft rod; 6. second support member. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0028] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0029] The embodiment of the present application provides a cylinder torsion spring fatigue testing machine, comprising:

[0030] Pedestal;

[0031] A rotating clamping plate, wherein a first rotating shaft is provided between the rotating clamping plate and the base, and the rotating clamping plate and the base are rotatably connected via the first rotating shaft;

[0032] A cylinder assembly, arranged on the base;

[0033] A push rod, the push rod is in transmission connection with the cylinder assembly, the cylinder assembly pushes the push rod to move along the length direction of the push rod, the rotating clamping plate is located on the movement path of the push rod, and the push rod pushes the rotating clamping plate to rotate around the first rotating shaft;

[0034] The torsion spring is sleeved on the first rotating shaft, one end of the torsion spring is fixed on the base, and the other end of the same torsion spring is fixed on the rotating clamping plate, and the rotating clamping plate drives the torsion spring to twist. The cylinder torsion spring fatigue testing machine provided above drives the push rod through the cylinder assembly, and the push rod pushes the rotating clamping plate to twist the torsion spring. Compared with the traditional motor drive method, the cylinder drive can provide a more stable force, thereby reducing the force fluctuation and cumulative error during the test, and avoiding the loss of equipment caused by the frequent forward and reverse rotation of the motor.

[0035] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] See also Figure 1-Figure 2 The embodiment of the present application provides a cylinder torsion spring fatigue testing machine 100, comprising a base 1, a rotating clamping plate 2, a cylinder assembly 3 and a push rod 4, wherein a first rotating shaft 5 is provided between the rotating clamping plate 2 and the base 1, and the rotating clamping plate 2 and the base 1 are rotationally connected through the first rotating shaft 5. The cylinder assembly 3 is arranged on the base 1. The push rod 4 is transmission-connected with the cylinder assembly 3, and the cylinder assembly 3 pushes the push rod 4 to move along the length direction of the push rod 4. The rotating clamping plate 2 is located on the movement path of the push rod 4, and the push rod 4 pushes the rotating clamping plate 2 to rotate around the first rotating shaft 5. A torsion spring is sleeved on the first rotating shaft 5, one end of a torsion spring is fixed on the base 1, and the other end of the same torsion spring is fixed on the rotating clamping plate 2, and the rotating clamping plate 2 drives the torsion spring to twist.

[0037] Specifically, the base 1 is the supporting structure of the cylinder torsion spring fatigue testing machine 100, and all components are installed on the base 1. Its function is to provide a stable foundation to ensure the stability of the whole machine and the accuracy of operation. The stability of the base 1 directly affects the accuracy of the test results, so the base 1 usually needs to have sufficient strength and rigidity. The rotating clamp 2 is rotatably connected to the base 1 through the first rotating shaft 5, and its function is to fix one end of the torsion spring and rotate around the first rotating shaft 5 under the push of the top rod 4, so as to realize the torsion test of the torsion spring. The design of the rotating clamp 2 ensures that the torsion spring can be evenly stressed during the test, avoiding stress concentration, thereby improving the accuracy and reliability of the test. The first rotating shaft 5 connects the base 1 and the rotating clamp 2, playing the role of support and transmission. It allows the rotating clamp 2 to rotate around it under the push of the top rod 4, thereby realizing the torsion test of the torsion spring. The design and material selection of the rotating shaft play an important role in reducing friction and wear and extending the life of the equipment. The cylinder assembly 3 is installed on the base 1 and is the core component that provides power. The cylinder assembly 3 pneumatically drives the push rod 4 to move in the length direction, thereby pushing the rotating clamping plate 2 to rotate and realizing the torsion of the torsion spring. The cylinder assembly 3 has the advantages of fast response and controllable force, and can realize high-precision and high-efficiency testing. The push rod 4 is connected to the cylinder assembly 3 in a transmission manner and is driven by the cylinder assembly 3 to move in the length direction. During the movement, the push rod 4 pushes the rotating clamping plate 2 to rotate around the first rotating shaft 5, thereby driving the torsion spring to torsion. The design of the push rod 4 needs to ensure that it has sufficient rigidity and precision during the movement to ensure the accuracy of the test results. The torsion spring is sleeved on the first rotating shaft 5, one end of which is fixed on the base 1, and the other end is fixed on the rotating clamping plate 2. The torsion test of the torsion spring is realized by rotating the rotating clamping plate 2. The fixing method of the torsion spring needs to ensure that no sliding or loosening occurs during the test to ensure the accuracy and repeatability of the test.

[0038] In a specific example, a sliding wheel 41 is provided at one end of the push rod 4 close to the rotating splint 2, the sliding wheel 41 is rotatably connected to the push rod 4, the sliding wheel 41 is in contact with the rotating splint 2, and the push rod 4 pushes the sliding wheel 41 to roll on the rotating splint 2.

[0039] Specifically, a sliding wheel 41 is installed at one end of the push rod 4, which is mainly used to reduce the friction resistance between the push rod 4 and the rotating clamping plate 2. The design of the sliding wheel 41 allows the push rod 4 to move more smoothly and efficiently when pushing the rotating clamping plate 2 to rotate, while reducing energy loss and wear of components, and improving the reliability and service life of the equipment. The sliding wheel 41 is rotatably connected to the push rod 4 through a specific bearing or connection method. This design ensures the stability and reliability of the push rod 4 when pushing the sliding wheel 41, and ensures that the push rod 4 can effectively transmit power to the rotating clamping plate 2, thereby realizing the torsion test of the torsion spring. At the same time, a good connection design can also reduce the friction between the rotating parts and improve the working efficiency of the equipment. The outer surface of the sliding wheel 41 is tightly fitted with the surface of the rotating clamping plate 2. This fit ensures that when the push rod 4 pushes the sliding wheel 41, the sliding wheel 41 can stably roll on the surface of the rotating clamping plate 2 without generating additional friction or sliding resistance. This design not only helps to reduce energy loss, but also ensures accuracy and repeatability during the test process.

[0040] In a specific example, the rotating clamping plate 2 includes a clamping plate body 22 rotatably connected to the first rotating shaft 5 and a top block 21 provided on the clamping plate body 22, wherein the top block 21 protrudes from the clamping plate body 22, and the top block 21 is located on the rolling path of the sliding wheel 41, and the top block 21 blocks the rolling of the sliding wheel 41;

[0041] The push rod 4 pushes the sliding wheel 41 to move to fit with the top block 21, and the rotating clamping plate 2 stops rotating.

[0042] Specifically, the clamp body 22 is the main part of the rotating clamp 2, which is connected to the base 1 through the first rotating shaft 5 so that it can rotate around the rotating axis. The top block 21 is a protruding part provided on the clamp body 22, and its design purpose is to affect the rolling path and movement of the sliding wheel 41. The position and shape of the top block 21 enable it to block the rolling of the sliding wheel 41, thereby controlling the motion state of the rotating clamp 2. The top block 21 is located on the rolling path of the sliding wheel 41, and its protruding part blocks the free rolling of the sliding wheel 41. When the top rod 4 pushes the sliding wheel 41, the sliding wheel 41 will be blocked by the top block 21, thereby limiting its continued rolling. Through the design of the top block 21, the motion range and stop position of the sliding wheel 41 can be accurately controlled and adjusted. This design is particularly important during fatigue testing because it ensures that the rotating clamp 2 stops at a specific position, so that the state of the torsion spring in the test is stable and repeatable. When the cylinder assembly 3 is started, the top rod 4 begins to move in the length direction, pushing the sliding wheel 41 installed at the top. The position and size of the top block 21 are designed so that when the sliding wheel 41 is pushed to a certain position, it will be closely fitted or in contact with the top block 21. This fit not only limits the further movement of the sliding wheel 41, but also ensures that the rotating clamping plate 2 stops rotating under the control of the top rod 4. When the sliding wheel 41 is in contact with the top block 21, the top rod 4 continues to push and may cause the sliding wheel 41 to be unable to continue to push forward, thereby causing the rotating clamping plate 2 to stop rotating. This process can accurately control the position and stop state of the rotating clamping plate 2, which is one of the key operating steps in fatigue testing.

[0043] In a specific example, the rotating clamp 2 includes a rotating plate 221 and a track plate 222 detachably connected to the rotating plate 221, the track plate 222 is located between the top rod 4 and the rotating plate 221, the sliding wheel 41 is in contact with the track plate 222, the top rod 4 pushes the track plate 222, and the track plate 222 drives the rotating plate 221 to rotate around the first rotating shaft 5.

[0044] Specifically, the rotating plate 221 is the core component of the rotating splint 2, which is connected to the first rotating shaft 5 and is responsible for the rotational movement of the torsion spring. The track plate 222 is located between the mandrel 4 and the rotating plate 221, connected to the motion mechanism of the mandrel 4, and detachably connected to the rotating plate 221. Its function is to control and adjust the rotation process of the rotating plate 221 through the push of the mandrel 4. The track plate 222 is located between the mandrel 4 and the rotating plate 221, and is directly connected to the push mechanism of the mandrel 4. The mandrel 4 pushes the track plate 222, and the precise control and adjustment of the rotating plate 221 are achieved through the design and position control of the track plate 222. This design ensures that during the fatigue test, the rotating splint 2 can stably rotate around the first rotating shaft 5 to complete the fatigue test task of the torsion spring. The sliding wheel 41 is installed at the end of the mandrel 4 and is connected to the rotating splint 2 through the track plate 222. Its surface is in contact with the track plate 222 to reduce rolling resistance and friction. The push rod 4 pushes the sliding wheel 41, and the sliding wheel 41 rolls on the track plate 222. This design ensures that the push of the push rod 4 can be effectively transmitted to the rotating clamping plate 2, causing it to rotate around the first rotating shaft 5. At the same time, the design of the sliding wheel 41 also helps to reduce energy loss and improve the working efficiency of the equipment. When the cylinder assembly 3 is started, the push rod 4 begins to move along its length. The push of the push rod 4 causes the track plate 222 to roll under the action of the sliding wheel 41. This motion mechanism transmits the movement of the push rod 4 to the rotating plate 221 through the design of the track plate 222 and the connection with the rotating plate 221. The rolling movement of the track plate 222 drives the rotating plate 221 to rotate around the first rotating shaft 5. In this process, the control of the push rod 4 and the design of the track plate 222 ensure the stability of the rotating clamping plate 2 and the accuracy of rotation, thereby completing the fatigue test task of the torsion spring.

[0045] In a specific example, the track plate 222 is connected to the rotating plate 221 by bolts.

[0046] Specifically, the track plate 222 and the rotating plate 221 are connected by bolts, usually by a threaded design, to fix the track plate 222 and the rotating plate 221 together. The main purpose of the bolt connection is to ensure a firm connection between the track plate 222 and the rotating plate 221. By fixing them together, loosening or movement during operation and operation can be prevented, thereby ensuring the stability and reliability of the equipment. The bolt connection provides long-lasting stability, so that the track plate 222 and the rotating plate 221 will not move relative to each other or fall off during operation. The connection method is easy to maintain and replace, and can be easily disassembled and reinstalled if maintenance or replacement is required. Ensuring the tightness and position accuracy of the connection is particularly important for equipment such as torsion spring fatigue testing machines that require high-precision control.

[0047] In a specific example, the top block 21 and the track plate 222 are formed in one piece.

[0048] Specifically, the integral molding of the top block 21 and the track plate 222 is usually completed by injection molding, die casting or other similar processes, that is, during the manufacturing process, the top block 21 and the track plate 222 are manufactured as a whole. Integral molding means that the materials of the top block 21 and the track plate 222 are the same or compatible materials, and are completed by a one-time molding process, thereby ensuring their structural integrity and tight connection. The integral molding of the top block 21 and the track plate 222 means that they are physically tightly connected together without additional joining parts or gaps. Integral molding provides higher strength and stability because there are no separate joints or connections, and it is not easy to loosen or wear. The manufacturing and assembly process is simplified, and the assembly steps and possible assembly errors are reduced. The functional integration of the top block 21 and the track plate 222 is ensured, making the overall component more sturdy and reliable.

[0049] In a specific example, the base 1 includes a load-bearing plate 11, a first support member 12 arranged on the load-bearing plate 11, and a clamping table 13 arranged on the load-bearing plate 11, the cylinder assembly 3 is arranged on the first support member 12, and one end of the torsion spring is fixed on the clamping table 13.

[0050] Specifically, the load-bearing plate 11 is the main supporting structure of the base 1, which is usually made of a solid metal sheet and can withstand the weight of the entire device and various forces and pressures during operation. The first support member 12 is a supporting element installed on the load-bearing plate 11, and its main function is to provide a basis for supporting and fixing other equipment components. The fixture table 13 is a platform or bracket with a fixing function installed on the load-bearing plate 11, which is used to fix and support the torsion spring and other related components used in the test. The cylinder assembly 3 is installed on the first support member 12, and is usually fixed to the base 1 by bolts or other fixing means to ensure stability and reliability. The cylinder assembly 3 serves as the power source of the equipment, and is driven by air pressure or hydraulic pressure to provide a driving force to move the push rod 4 or other related components. By being installed on the first support member 12, the cylinder assembly 3 is kept in a suitable position to ensure that it will not move or fall off during operation. One end of the torsion spring is fixed to the fixture table 13 by a specially designed fixing device, which may be a fixture or other fixing structure. It is crucial for fatigue testing machines to ensure that the torsion spring is firmly fixed during the test so that its torsion and stress changes can be accurately measured and recorded.

[0051] In a specific example, the cylinder assembly 3 includes a cylinder body 31 transmission-connected to the push rod 4, a fixed block 33 arranged on the first support member 12, and a second rotating shaft 32 arranged between the cylinder body 31 and the fixed block 33, and the cylinder body 31 is rotationally connected to the fixed block 33 via the second rotating shaft 32.

[0052] Specifically, the cylinder body 31 is a main component in a pneumatic or hydraulic system, responsible for generating a driving force to perform mechanical movements, such as the movement of the push rod 4 or other related actions. It is connected to the push rod 4 by transmission, usually through a mechanical device or direct connection, to transmit the thrust of the cylinder to the push rod 4. The fixed block 33 is mounted on the first support member 12, which is used to fix and support a part of the cylinder body 31 to ensure that the cylinder is firmly and safely fixed on the equipment during operation. The second rotating shaft 32 is arranged between the cylinder body 31 and the fixed block 33, through which the cylinder body 31 can rotate on the fixed block 33. The cylinder body 31 is rotatably connected to the fixed block 33 through the second rotating shaft 32. This design allows the cylinder to adjust the angle or rotate when necessary to adapt to different operating requirements. The thrust generated by the cylinder body 31 of the push rod 4 is transmitted through a transmission device (such as the second rotating shaft 32), driving the push rod 4 to move in its length direction to perform the required mechanical action. By adjusting the rotating shaft between the cylinder body 31 and the fixed block 33, the movement speed and position of the push rod 4 can be accurately controlled to achieve accurate adjustment and control of the operation of the equipment. The design of the fixed block 33 and the second rotating shaft 32 ensures the stability and safety of the cylinder during use, avoiding the possibility of movement or falling off during operation. The design of the rotating connection of the cylinder body 31 allows the equipment to adjust and adapt to different working angles and operating requirements when needed.

[0053] In a specific example, the cylinder torsion spring fatigue testing machine 100 further includes a second support member 6 , one end of the cylinder body 31 is rotatably connected to the first support member 12 , and the other end of the cylinder body 31 is disposed on the second support member 6 .

[0054] Specifically, the second support member 6 is another support component in the cylinder torsion spring fatigue testing machine 100, which is usually installed on the other side or relative position of the equipment. Its main function is to provide additional support and fixation to ensure the stability and balance of the cylinder during operation. One end of the cylinder body 31 is connected to the first support member 12 through a mechanical device or a fixing device to form a rotating connection. This design ensures the stability of the cylinder during operation and prevents position changes or instability caused by movement or vibration. The other end of the cylinder body 31 is fixed or set on the second support member 6, usually fixed by bolts or other connecting members. The setting of the second support member 6 provides additional support and balance to ensure the stability and reliability of the cylinder during operation. Through the setting of the two supports, the structural stability of the entire cylinder system is effectively enhanced, ensuring the balance and safety of the equipment during operation. This design enables the cylinder to operate stably in different working environments and conditions, and is suitable for various industrial application scenarios that require precise control and stable power transmission.

[0055] In a specific example, a torsion spring slot 131 is formed on the fixture table 13 , and a torsion spring is placed in the torsion spring slot 131 .

[0056] Specifically, the fixture table 13 is a component installed on the base 1 of the cylinder torsion spring fatigue testing machine 100, which is used to fix and support one end of the torsion spring. The fixture table 13 provides a torsion spring groove 131 for accurately positioning and fixing one end of the torsion spring to ensure that the torsion spring does not move or fall off during the test. The torsion spring groove 131 is a groove or opening on the fixture table 13, which is specifically used to place and install the torsion spring. The torsion spring groove 131 is usually designed according to the size and shape of the torsion spring to ensure that the torsion spring can be firmly placed in the groove without being affected by external interference. One end of the torsion spring is placed in the torsion spring groove 131, and the torsion spring is firmly fixed on the fixture table 13 through the design and size of the groove. The existence of the torsion spring groove 131 allows the torsion spring to maintain a fixed position during the test, preventing errors or inaccuracies in the test results due to vibration or movement. Through the design of the torsion spring groove 131, it is ensured that the torsion spring can be tested in a fixed position, thereby ensuring the accuracy and repeatability of the test results. The torsion spring slot 131 on the fixture table 13 makes the installation and replacement of the torsion spring simple and quick, thereby improving the use efficiency of the testing equipment.

[0057] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A cylinder torsion spring fatigue testing machine, characterized in that: include: Pedestal; A rotating clamping plate, wherein a first rotating shaft is provided between the rotating clamping plate and the base, and the rotating clamping plate and the base are rotatably connected via the first rotating shaft; A cylinder assembly, arranged on the base; A push rod, the push rod is in transmission connection with the cylinder assembly, the cylinder assembly pushes the push rod to move along the length direction of the push rod, the rotating clamping plate is located on the movement path of the push rod, and the push rod pushes the rotating clamping plate to rotate around the first rotating shaft; The torsion spring is sleeved on the first rotating shaft, one end of a torsion spring is fixed on the base, and the other end of the same torsion spring is fixed on the rotating clamping plate, and the rotating clamping plate drives the torsion spring to twist.

2. The cylinder torsion spring fatigue testing machine according to claim 1, characterized in that: A sliding wheel is provided at one end of the push rod close to the rotating clamping plate. The sliding wheel is rotatably connected to the push rod, the sliding wheel is in contact with the rotating clamping plate, and the push rod pushes the sliding wheel to roll on the rotating clamping plate.

3. The cylinder torsion spring fatigue testing machine according to claim 2, characterized in that: The rotating clamping plate comprises a clamping plate body rotatably connected to the first rotating shaft rod and a top block arranged on the clamping plate body, wherein the top block protrudes from the clamping plate body and is located on the rolling path of the sliding wheel, and the top block blocks the rolling of the sliding wheel; The push rod pushes the sliding wheel to move until it fits with the push block, and the rotating clamping plate stops rotating.

4. The cylinder torsion spring fatigue testing machine according to claim 3, characterized in that: The rotating clamping plate includes a rotating plate and a track plate detachably connected to the rotating plate, the track plate is located between the top rod and the rotating plate, the sliding wheel is in contact with the track plate, the top rod pushes the track plate, and the track plate drives the rotating plate to rotate around the first rotating shaft.

5. The cylinder torsion spring fatigue testing machine according to claim 4, characterized in that: The track plate is connected with the rotating plate by bolts.

6. The cylinder torsion spring fatigue testing machine according to claim 4, characterized in that: The top block is integrally formed with the track plate.

7. The cylinder torsion spring fatigue testing machine according to claim 1, characterized in that: The base includes a load-bearing plate, a first support member arranged on the load-bearing plate, and a fixture table arranged on the load-bearing plate. The cylinder assembly is arranged on the first support member, and one end of the torsion spring is fixed on the fixture table.

8. The cylinder torsion spring fatigue testing machine according to claim 7, characterized in that: The cylinder assembly includes a cylinder body transmission-connected to the push rod, a fixed block arranged on the first support member, and a second rotating shaft arranged between the cylinder body and the fixed block, and the cylinder body is rotationally connected to the fixed block via the second rotating shaft.

9. The cylinder torsion spring fatigue testing machine according to claim 8, characterized in that: The cylinder torsion spring fatigue testing machine also includes a second support member, one end of the cylinder body is rotatably connected to the first support member, and the other end of the cylinder body is arranged on the second support member.

10. The cylinder torsion spring fatigue testing machine according to claim 8, characterized in that: The fixture table is provided with a torsion spring groove, and the torsion spring is placed in the torsion spring groove.

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