A tensioner spring fatigue performance testing device

Abstract

The present invention belongs to the technical field of fatigue detection devices, and specifically discloses a tensioner spring fatigue performance detection device, comprising a workbench, a tensioner body to be tested is arranged on the top of the workbench, a controller is arranged on one side of the workbench, a limiting mechanism for limiting the tensioner body is arranged on the top of the workbench, and a connecting mechanism is arranged on the surface of the workbench; by arranging the limiting mechanism and the trigger component, the tensioner body can be limited by the limiting mechanism, and the self-adjustment of the trigger component can make the buffer plate close to the tensioner body without generating too much pressure, and can simulate the pressure of the transmission belt itself on the tensioner body during actual use, so that the spring itself is more closely fitted to the load of the wheel body and the other components of the tensioner body during the detection process, thereby improving the accuracy of the detection and making the detected data more in line with the actual situation.

Description

Technical Field

[0001] The invention belongs to the technical field of fatigue detection devices, and in particular relates to a tensioner spring fatigue performance detection device. Background Art

[0002] The tensioner is a belt tensioning device used in automobile transmission systems. The tensioner is mainly composed of a fixed housing, a tensioning arm, a wheel body, a torsion spring, a rolling bearing and a spring sleeve. It can automatically adjust the tension according to the different tightness of the belt to make the transmission system stable, safe and reliable. A spring is a mechanical part that uses elasticity to control the movement of parts, ease shock or vibration, store energy, measure the size of force, etc. It plays a very wide role in industrial production and daily life.

[0003] After searching, a Chinese patent discloses a tensioner spring fatigue detection device (publication number CN210464884U). This patented technology is provided with a second hook, an electric telescopic rod, a rubber pad and an infrared transmitter. When in use, the electric telescopic rod is telescoped back and forth at a fixed length. At the beginning, the elasticity of the spring does not change, and the spring pulls the rubber pad. At this time, the infrared transmitter is just shining on the infrared sensor. When the elasticity of the spring deteriorates, the tension of the spring pulling the rubber pad becomes smaller. At this time, the infrared transmitter is not shining on the infrared sensor, and the signal is transmitted to the infrared controller. The infrared controller controls the electric telescopic rod to stop working, and the fatigue resistance of the spring is measured according to the number of back and forth movements of the spring. However, the existing detection device removes the spring of the tensioner alone for detection, which cannot simulate the actual situation during the use of the tensioner, and the detection accuracy is poor. Therefore, a person skilled in the art provides a tensioner spring fatigue performance detection device to solve the problems raised in the above background technology. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a tensioner spring fatigue performance detection device.

[0005] To achieve the above objectives, the present invention provides a tensioner spring fatigue performance detection device, comprising a workbench, a tensioner body to be tested is arranged on the top of the workbench, a controller is arranged on one side of the workbench, a limiting mechanism for limiting the tensioner body is arranged on the top of the workbench, a connecting mechanism is arranged on the surface of the workbench, and a driving mechanism for cooperating with the connecting mechanism to test the tensioner body is arranged on one side of the workbench; the connecting mechanism comprises a trigger assembly and an adjustment assembly arranged on the top of the workbench; wherein, the trigger assembly comprises a mounting block slidably connected to the top of the workbench, a buffer block is embedded and installed on one side of the mounting block close to the tensioner body, a pressure sensor is arranged inside the mounting block, one side of the pressure sensor is in contact with the surface of the buffer block, a mounting shell is arranged on the other side of the mounting block, an electric push rod is arranged inside the mounting shell, and the output shaft of the electric push rod passes through the mounting shell and is fixedly connected to the surface of the mounting block

[0006] In the above technical solution, further, the adjustment component includes a connecting shell arranged on the surface of the mounting shell, the inner wall of the connecting shell is fixedly connected with a slider slidably connected to the surface of the mounting shell, the surface of the connecting shell is fixedly connected with a connecting ring, the surface of the connecting ring is fixedly connected with two symmetrically distributed fixing plates, and the top of the workbench is fixedly connected with two guide rods slidably connected to the inner walls of the two fixing plates respectively.

[0007] In the above technical solution, further, a connecting rod is fixedly connected to one side of the connecting shell away from the mounting block, the other end of the connecting rod is fixedly connected to the fixed block, a trigger rod is provided on the surface of the fixed block, one end of the trigger rod passes through the fixed block, and a first spring is fixedly connected between the surface of the trigger rod and the inner wall of the fixed block.

[0008] In the above technical solution, further, the adjustment component also includes two limiting holes both opened on the surface of the mounting shell, and a limiting column is arranged on the surface of the connecting shell, and one end of the limiting column penetrates into the interior of the adjacent limiting hole.

[0009] In the above technical solution, further, the driving mechanism includes a mounting frame arranged on one side of the workbench, the surface of the mounting frame is rotatably connected to a connecting shaft, the other end of the connecting shaft is fixedly connected to a turntable, and the other side of the turntable is provided with a first driving groove and a second driving groove in sequence from the outer edge to the center of the circle, and one end of the trigger rod extends to the interior of the first driving groove.

[0010] In the above technical solution, further, a motor is arranged on the surface of the mounting frame, the output shaft of the motor is fixedly connected with a first gear, the surface of the connecting shaft is fixedly connected with a second gear, the first gear is meshed with the second gear, and the gear ratio of the first gear to the second gear is three to one.

[0011] In the above technical solution, further, the limiting mechanism includes a bidirectional lead screw rotatably connected to the top of the workbench, the surface of the bidirectional lead screw is threadedly connected with two symmetrically distributed connecting plates, the top of the workbench is fixedly connected with a guide rod symmetrically distributed with the bidirectional lead screw, and the guide rod is slidably connected to the inner walls of the two connecting plates.

[0012] In the above technical solution, further, a mounting plate is fixedly connected to the top of one of the connecting plates, two threaded holes are opened on the surface of the mounting plate, and two fastening bolts are arranged on the top of the mounting plate, and the lower end threads of the fastening bolts pass through the adjacent threaded holes and are tightly pressed against the surface of the tensioner wheel body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting a limit mechanism and a trigger component, the limit mechanism can be used to limit the tensioner body. The self-adjustment of the trigger component can make the buffer plate close to the tensioner body without generating too much pressure. The pressure of the transmission belt on the tensioner body during actual use can be simulated, so that the spring itself is more closely fitted to the load of the wheel body and other parts of the tensioner body during the detection process, thereby improving the accuracy of the detection and making the detection data more in line with the actual situation.

[0015] 2. The setting of the driving mechanism can cooperate with the connecting mechanism to achieve a multi-range detection effect. At the same time, the mutual cooperation of the first gear and the second gear can realize multiple rotations of the turntable under the action of a single rotation of the motor, thereby reducing the use cost and improving the detection efficiency. By adjusting the position of the trigger rod so that it is located in the first drive slot or the second drive slot for use, the adjustment of two moving distances is achieved. It is suitable for fatigue performance detection of the tensioner body spring under different conditions. At the same time, it can be applied to different models of tensioner bodies, thereby improving the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a tensioner spring fatigue performance detection device proposed by the present invention;

[0017] Figure 2 A schematic diagram of the distribution of the connection mechanism and the limit mechanism of the tensioner spring fatigue performance detection device proposed by the present invention;

[0018] Figure 3 A schematic diagram of the connection between the adjustment component and the trigger component of a tensioner spring fatigue performance detection device proposed by the present invention;

[0019] Figure 4 for Figure 3 A magnified view of middle;

[0020] Figure 5 A schematic diagram of the connection between the first spring and the trigger rod of a tensioner spring fatigue performance detection device proposed by the present invention;

[0021] Figure 6 A schematic diagram of the structure of a driving mechanism of a tensioner spring fatigue performance detection device proposed by the present invention;

[0022] Figure 7 This is a schematic diagram of the connection between the first gear and the second gear of a tensioner spring fatigue performance detection device proposed by the present invention.

[0023] In the figure: 1. workbench; 101. tensioner body; 102. controller; 2. limit mechanism; 201. bidirectional screw; 202. connecting plate; 203. mounting plate; 204. threaded hole; 205. fastening bolt; 3. connecting mechanism; 31. trigger assembly; 3101. mounting block; 3102. buffer block; 3103. pressure sensor; 3104. electric push rod; 3105. mounting shell; 32. adjustment assembly; 3201. connecting shell; 3202 , fixing plate; 3203, connecting ring; 3204, connecting rod; 3205, guide rod; 3206, limiting hole; 3207, limiting column; 3208, slider; 3209, fixing block; 3210, trigger rod; 3211, first spring; 4, driving mechanism; 401, mounting frame; 402, motor; 403, first gear; 404, first driving slot; 405, second driving slot; 406, turntable; 407, connecting shaft; 408, second gear. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-Figure 7The fatigue performance testing device of a tensioner spring shown in the figure comprises a workbench 1, a tensioner body 101 to be tested is arranged on the top of the workbench 1, a controller 102 is arranged on one side of the workbench 1, a limiting mechanism 2 for limiting the tensioner body 101 is arranged on the top of the workbench 1, a connecting mechanism 3 is arranged on the surface of the workbench 1, and a driving mechanism 4 for cooperating with the connecting mechanism 3 to test the tensioner body 101 is arranged on one side of the workbench 1; the connecting mechanism 3 comprises a trigger component 31 and an adjusting component 32 arranged on the top of the workbench 1; wherein, the trigger component 31 includes a mounting block 3101 slidably connected to the top of the workbench 1, a buffer block 3102 is embedded and installed on one side of the mounting block 3101 close to the tensioner body 101, a pressure sensor 3103 is arranged inside the mounting block 3101, one side of the pressure sensor 3103 contacts the surface of the buffer block 3102, a mounting shell 3105 is arranged on the other side of the mounting block 3101, an electric push rod 3104 is arranged inside the mounting shell 3105, and the output shaft of the electric push rod 3104 passes through the mounting shell 3105 and is fixedly connected to the surface of the mounting block 3101;

[0026] By starting the electric push rod 3104, the mounting block 3101 can be driven to slide along the inner wall of the workbench 1. During this process, the buffer block 3102 can be brought into contact with the wheel body of the fixed tensioner body 101. At this time, the buffer block 3102 is pressurized to apply pressure to the pressure sensor 3103. After the pressure sensor 3103 detects that the pressure exceeds the preset value, it transmits a signal to the controller 102. The controller 102 stops the output of the electric push rod 3104, so that the buffer block 3102 can be close to the tensioner body 101 without generating too much pressure, which can simulate the pressure of the transmission belt itself on the tensioner body 101 during actual use.

[0027] like Figure 1-Figure 7 As shown, the adjustment component 32 includes a connecting shell 3201 arranged on the surface of the mounting shell 3105, the inner wall of the connecting shell 3201 is fixedly connected with a slider 3208 that is slidably connected to the surface of the mounting shell 3105, the surface of the connecting shell 3201 is fixedly connected with a connecting ring 3203, the surface of the connecting ring 3203 is fixedly connected with two symmetrically distributed fixing plates 3202, and the top of the workbench 1 is fixedly connected with two guide rods 3205 that are slidably connected to the inner walls of the two fixing plates 3202 respectively.

[0028] A connecting rod 3204 is fixedly connected to one side of the connecting shell 3201 away from the mounting block 3101, and the other end of the connecting rod 3204 is fixedly connected to a fixing block 3209. A trigger rod 3210 is provided on the surface of the fixing block 3209, and one end of the trigger rod 3210 passes through the fixing block 3209. A first spring 3211 is fixedly connected between the surface of the trigger rod 3210 and the inner wall of the fixing block 3209.

[0029] The adjustment assembly 32 further includes two limiting holes 3206 both opened on the surface of the mounting shell 3105, and a limiting column 3207 is provided on the surface of the connecting shell 3201, and one end of the limiting column 3207 penetrates into the interior of the adjacent limiting hole 3206;

[0030] By removing the limiting column 3207 and pulling the connecting shell 3201 to slide along the surface of the mounting shell 3105, and then inserting the limiting column 3207 into another limiting hole 3206, the overall length of the connecting mechanism 3 can be increased, so as to cooperate with the driving mechanism 4 to realize detection in different ranges, thereby improving the detection range of the device;

[0031] The arrangement of the guide rod 3205, the connecting ring 3203 and the fixing plate 3202 can improve the stability of the connecting shell 3201 during movement, thereby improving the accuracy of device detection.

[0032] like Figure 1-Figure 7 As shown, the driving mechanism 4 includes a mounting frame 401 arranged on one side of the workbench 1, and the surface of the mounting frame 401 is rotatably connected to a connecting shaft 407, and the other end of the connecting shaft 407 is fixedly connected to a turntable 406, and the other side of the turntable 406 is provided with a first driving groove 404 and a second driving groove 405 in sequence from the outer edge to the center of the circle, and one end of the trigger rod 3210 extends to the inside of the first driving groove 404.

[0033] A motor 402 is disposed on the surface of the mounting frame 401, and a first gear 403 is fixedly connected to the output shaft of the motor 402. A second gear 408 is fixedly connected to the surface of the connecting shaft 407. The first gear 403 is meshed with the second gear 408, and the gear ratio of the first gear 403 to the second gear 408 is three to one.

[0034] By starting the motor 402, the first gear 403 can be driven to rotate, and the second gear 408 can be driven to make the connecting shaft 407 drive the turntable 406 to rotate. In this process, the trigger rod 3210 can be pushed through the inner wall of the first driving groove 404 to make the connecting mechanism 3 move back and forth, so as to achieve the effect of fatigue testing the spring on the tensioner body 101, and the trigger rod 3210 is pulled to compress the first spring 3211 and separate from the first driving groove 404. By adjusting the overall length of the connecting mechanism 3, the trigger rod 3210 is moved to the inside of the second driving groove 405, and the trigger rod 3210 is released. Under the action of the first spring 3211, the trigger rod 3210 can be inserted into the inside of the second driving groove 405. At this time, when the starting motor 402 drives the turntable 406 to rotate, it can drive the connecting mechanism 3 to achieve another distance of reciprocating movement, thereby achieving detection effects in different ranges, thereby improving the detection effect of the device;

[0035] like Figure 1-Figure 7The shown limiting mechanism 2 includes a bidirectional lead screw 201 rotatably connected to the top of the workbench 1, and the surface of the bidirectional lead screw 201 is threadedly connected with two symmetrically distributed connecting plates 202. The top of the workbench 1 is fixedly connected with a guide rod symmetrically distributed with the bidirectional lead screw 201, and the guide rod is slidably connected to the inner walls of the two connecting plates 202.

[0036] A mounting plate 203 is fixedly connected to the top of one of the connecting plates 202. Two threaded holes 204 are provided on the surface of the mounting plate 203. Two fastening bolts 205 are provided on the top of the mounting plate 203. The threads at the lower ends of the fastening bolts 205 penetrate through the adjacent threaded holes 204 and abut against the surface of the tensioner body 101.

[0037] By placing the mounting seat of the tension wheel body 101 between the two connecting plates 202, rotating the bidirectional lead screw 201 can drive the two connecting plates 202 to approach each other to achieve the effect of clamping the mounting seat of the tension wheel body 101, and at the same time, the mounting seat of the tension wheel body 101 can be tightened by passing the fastening bolt 205 through the threaded hole 204, thereby improving the limiting effect, being able to directly limit the tension wheel body 101, simulating the environment when the tension wheel body 101 is in use, and improving the detection accuracy;

[0038] Working principle: By placing the mounting seat of the tensioner wheel body 101 between the two connecting plates 202, rotating the bidirectional lead screw 201 can drive the two connecting plates 202 to approach each other to achieve the effect of clamping the mounting seat of the tensioner wheel body 101, and at the same time, the mounting seat of the tensioner wheel body 101 can be tightened by passing the fastening bolt 205 through the threaded hole 204, thereby improving the limiting effect, being able to directly limit the tensioner wheel body 101, simulating the environment when the tensioner wheel body 101 is in use to improve the detection accuracy, and by starting the electric push rod 3104, the mounting block 3101 can be driven to slide along the inner wall of the workbench 1, during which the buffer block 3102 can contact the wheel body of the fixed tensioner wheel body 101, at which time the buffer block 3102 is pressurized to apply pressure to the pressure sensor 3103, and the pressure sensor 3103 transmits a signal to the controller 102 after detecting that the pressure exceeds the preset value, and the controller 102 stops the output of the electric push rod 3104, so that the buffer block 3102 can be close to the tensioner wheel body 101 while It will not generate too much pressure, and can simulate the pressure of the transmission belt itself on the tensioner body 101 during actual use. By starting the motor 402, the first gear 403 can be driven to rotate, and the second gear 408 can be driven to make the connecting shaft 407 drive the turntable 406 to rotate. In this process, the trigger rod 3210 can be pushed through the inner wall of the first driving groove 404 to make the connecting mechanism 3 move back and forth, thereby achieving the effect of fatigue testing the spring on the tensioner body 101, pulling the trigger rod 3210 to compress the first spring 3211 and separate it from the first driving groove 404, and by adjusting the overall length of the connecting mechanism 3, the trigger rod 3210 is moved to the inside of the second driving groove 405, and loosening the trigger rod 3210 can make the trigger rod 3210 inserted into the inside of the second driving groove 405 under the action of the first spring 3211. At this time, when the starting motor 402 drives the turntable 406 to rotate, it can drive the connecting mechanism 3 to achieve another distance of reciprocating movement, thereby achieving detection effects in different ranges, thereby improving the detection effect of the device.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A tensioner spring fatigue performance testing device, comprising a workbench (1), characterized in that: A tensioner wheel body (101) to be tested is arranged on the top of the workbench (1), a controller (102) is arranged on one side of the workbench (1), a limiting mechanism (2) for limiting the position of the tensioner wheel body (101) is arranged on the top of the workbench (1), a connecting mechanism (3) is arranged on the surface of the workbench (1), and a driving mechanism (4) for cooperating with the connecting mechanism (3) to test the tensioner wheel body (101) is arranged on one side of the workbench (1); The connecting mechanism (3) comprises a trigger component (31) and an adjustment component (32) which are arranged on the top of the workbench (1); The trigger assembly (31) comprises a mounting block (3101) slidably connected to the top of the workbench (1); a buffer block (3102) is embedded and installed on a side of the mounting block (3101) close to the tensioner body (101); a pressure sensor (3103) is arranged inside the mounting block (3101); one side of the pressure sensor (3103) contacts the surface of the buffer block (3102); a mounting shell (3105) is arranged on the other side of the mounting block (3101); an electric push rod (3104) is arranged inside the mounting shell (3105); an output shaft of the electric push rod (3104) passes through the mounting shell (3105) and is fixedly connected to the surface of the mounting block (3101); The adjustment assembly (32) comprises a connection shell (3201) arranged on the surface of the mounting shell (3105); the inner wall of the connection shell (3201) is fixedly connected with a slider (3208) slidably connected to the surface of the mounting shell (3105); the surface of the connection shell (3201) is fixedly connected with a connection ring (3203); the surface of the connection ring (3203) is fixedly connected with two symmetrically distributed fixing plates (3202); and the top of the workbench (1) is fixedly connected with two guide rods (3205) slidably connected to the inner walls of the two fixing plates (3202); A connecting rod (3204) is fixedly connected to one side of the connecting shell (3201) away from the mounting block (3101); the other end of the connecting rod (3204) is fixedly connected to a fixing block (3209); a trigger rod (3210) is provided on the surface of the fixing block (3209); one end of the trigger rod (3210) passes through the fixing block (3209); and a first spring (3211) is fixedly connected between the surface of the trigger rod (3210) and the inner wall of the fixing block (3209); The adjustment component (32) further comprises two limiting holes (3206) both opened on the surface of the mounting shell (3105); a limiting column (3207) is arranged on the surface of the connecting shell (3201); one end of the limiting column (3207) penetrates into the interior of an adjacent limiting hole (3206); The driving mechanism (4) comprises a mounting frame (401) arranged on one side of the workbench (1); a connecting shaft (407) is rotatably connected to the surface of the mounting frame (401); the other end of the connecting shaft (407) is fixedly connected to a rotating disk (406); a first driving groove (404) and a second driving groove (405) are sequentially formed on the other side of the rotating disk (406) from the outer edge to the center of the circle; and one end of the trigger rod (3210) extends to the inside of the first driving groove (404).

2. The tensioner spring fatigue performance detection device according to claim 1, characterized in that: A motor (402) is arranged on the surface of the mounting frame (401); a first gear (403) is fixedly connected to the output shaft of the motor (402); a second gear (408) is fixedly connected to the surface of the connecting shaft (407); the first gear (403) is meshedly connected to the second gear (408); and a gear ratio between the first gear (403) and the second gear (408) is three to one.

3. The tensioner spring fatigue performance detection device according to claim 1, characterized in that: The limiting mechanism (2) comprises a bidirectional lead screw (201) rotatably connected to the top of the workbench (1), the surface of the bidirectional lead screw (201) being threadedly connected to two symmetrically distributed connecting plates (202), the top of the workbench (1) being fixedly connected to a guide rod symmetrically distributed with the bidirectional lead screw (201), the guide rod being slidably connected to the inner walls of the two connecting plates (202).

4. The tensioner spring fatigue performance detection device according to claim 3, characterized in that: A mounting plate (203) is fixedly connected to the top of one of the connecting plates (202), two threaded holes (204) are provided on the surface of the mounting plate (203), two fastening bolts (205) are provided on the top of the mounting plate (203), and the threads at the lower ends of the fastening bolts (205) pass through adjacent threaded holes (204) and are tightly abutted against the surface of the tensioner body (101).

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