Vibration testing device for agricultural machinery manufacturing

Abstract

A vibration testing device for agricultural machinery manufacturing disclosed by the present invention comprises a to-be-tested shaft and a pair of bases, the top ends of the two bases are connected with supporting plates through distance adjusting assemblies, the two ends of each supporting plate are hinged with fixing rods, the top ends of the two fixing rods are jointly and fixedly connected with a fixing ring, and angle limiting assemblies are arranged between the fixing rods and the supporting plates. Clamping assemblies are arranged on the fixing ring, and a shaft to be tested is arranged between the two clamping assemblies; the clamping assembly can fix the to-be-tested shaft, correct load loading can be performed on the to-be-tested shaft through the clamping assembly when the to-be-tested shaft needs to be subjected to an axial load or radial load test, and when the clamping assembly needs to be used for clamping the to-be-tested shaft, the motor connected through the supporting arm on the fixing ring is started, so that the to-be-tested shaft can be clamped through the clamping assembly. The motor output shaft drives the lead screw coaxially connected with the motor output shaft to rotate, the clamping fork rotationally connected with one end of the motor output shaft is driven by the control arm to slide along the outer side of the fixing ring, and the shaft to be tested is clamped or loosened through the movement of the clamping fork.

Description

Technical Field

[0001] This invention relates to the field of vibration testing technology, and more specifically, to a vibration testing device for agricultural machinery manufacturing. Background Technology

[0002] Vibration testing of agricultural machinery is a crucial step in ensuring its reliability, durability, operational comfort, and safety. Unlike stationary machinery, the main source of vibration in agricultural machinery is the excitation from unevenness of the road surface / field. The vibration excitation source caused by the working terrain has a wide spectrum and strong randomness. Moreover, agricultural machinery is often in a state of variable speed and variable load, and the vibration load exhibits non-stationarity. Therefore, vibration testing of agricultural machinery includes multiple test indicators.

[0003] However, existing vibration tests used in agricultural machinery manufacturing mostly involve separate tests of single test signals when conducting vibration tests on agricultural machinery. The working areas of agricultural machinery are mostly uneven, and slope operations cause multi-axial vibration and impact. There is a lack of composite signal tests that combine low and high frequencies, which reduces the test results. Summary of the Invention

[0004] This invention provides a vibration testing device for agricultural machinery manufacturing, which solves the problem that existing vibration testing methods for agricultural machinery manufacturing mostly involve separate testing of single test signals, lacking the function of testing composite signals that mix low and high frequencies.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A vibration testing device for agricultural machinery manufacturing includes a shaft to be tested and a pair of bases. Each of the two bases has a support plate connected to its top end via an adjustment assembly. Each support plate has a fixing rod hinged to both ends. The top ends of the two fixing rods are fixedly connected to a fixing ring. A limiting angle assembly is provided between the fixing rods and the support plate. A clamping assembly is provided on the fixing ring. The shaft to be tested is positioned between the two clamping assemblies.

[0007] Preferably, the clamping assembly includes a plurality of clamping forks slidably engaged on the fixing ring, one end of each clamping fork contacts the outside of the shaft to be tested, and the free end of each clamping fork has an end groove, in which a control shaft is fixedly disposed.

[0008] Preferably, the fixed ring has multiple inclined grooves, the control shaft has a control arm hinged to it, the free end of the control arm is rotatably connected to a collar, the fixed ring has a drive plate on the side with the inclined grooves, and the collar is slidably engaged in the drive plate.

[0009] Preferably, a support arm is provided on the fixed ring, a first motor is provided at the free end of the support arm, a lead screw is coaxially connected to the output shaft end of the first motor, and the drive plate passes through the lead screw.

[0010] Preferably, the adjusting component includes a guide block disposed on the base, the guide block being slidably connected to the tray via a slot, a connecting arm being hinged to one end of the tray, a limiting groove being disposed at the top of the slot, and a pair of limiting blocks disposed at the top of the guide block being respectively engaged in the two limiting grooves.

[0011] Preferably, the base has a groove, a rotating disk is rotatably mounted on the groove, a connecting seat is rotatably mounted on the rotating disk, the free end of the connecting arm is hinged to the connecting seat, a second motor is provided on the outside of the base, and a drive wheel is coaxially connected to the output shaft end of the second motor, the drive wheel is in pressing contact with the outside of the rotating disk.

[0012] Preferably, the angle limiting assembly includes a drive rod disposed on one side of the support plate, a guide sleeve fixedly connected to the free end of the drive rod, and a drive shaft eccentrically disposed at the bottom end of the fixed rod, the drive shaft being slidably engaged within the guide sleeve.

[0013] Preferably, each of the two bases has an orientation groove at its opposite ends, a guide plate is slidably engaged in the orientation groove, the guide plate is horizontally positioned, a fixing cover is provided at the bottom end of the guide plate, and multiple support feet are evenly provided at the bottom end of the fixing cover.

[0014] Preferably, a pneumatic rod is provided on the bottom wall of the fixed cover, and a connecting sleeve is fixedly connected to the top of the pneumatic rod, and a horizontal shaft is rotatably engaged at the top of the connecting sleeve.

[0015] Preferably, the two pallets are hinged to opposite ends with a pair of first swing arms and a pair of second swing arms, the free ends of the first swing arms and the second swing arms are both sleeved on the horizontal axis, the lengths of the first swing arms and the second swing arms are equal, and the lengths of the first swing arms and the second swing arms are less than the depth of the directional groove.

[0016] The principle and beneficial effects of this technical solution:

[0017] (1) The clamping component provided in this invention can fix the shaft to be tested. When it is necessary to test the shaft to be tested by axial load or radial load, the clamping component can apply the correct load to the shaft to be tested. When it is necessary to use the clamping component to clamp the shaft to be tested, start the motor connected to the support arm on the fixing ring. The motor output shaft will drive the lead screw connected to it to rotate. When the lead screw rotates, it will drive the drive plate sleeved on its outer side to move. The clamping fork connected to one end of the control arm will slide along the outer side of the fixing ring. The shaft to be tested will be clamped or released by the movement of the clamping fork.

[0018] (2) The distance adjustment component set in this invention can adjust the distance between the two pallets and the base to simulate the wheel and axle bumps of agricultural machinery when the road is rugged. When using the distance adjustment component, the second motor is started, and the second motor will drive the drive wheel coaxially connected to its output shaft to rotate. The drive wheel will drive the rotating disk to rotate at the same time. The start of the second motor will eventually drive the pallet to move back and forth in the vertical direction. By changing the output shaft speed of the second motor, the vibration frequency of the pallet in the vertical direction can be controlled, thereby simulating different working conditions of agricultural machinery.

[0019] (3) The angle limiting component set in this invention can limit the rotation of the drive rod relative to the support plate, which makes it convenient for the device to test the shaft under test with a single type of load. When using the angle limiting component, first start the drive rod to drive the guide sleeve connected to its output shaft end to move. Since the drive shaft with the bottom end of the fixed rod is eccentrically set and is slidably locked in the guide sleeve, the fixed rod can be moved to the required specified angle and then the current length of the drive rod can be locked. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0022] Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle;

[0023] Figure 4 for Figure 2 A magnified structural diagram of region B in the middle;

[0024] Figure 5 for Figure 2 A magnified structural diagram of region C in the middle;

[0025] The reference numerals in the accompanying drawings of the instruction manual include: 1. Shaft to be tested; 2. Base; 3. Support leg; 4. Support arm; 5. First motor; 6. Fixing rod; 7. Drive shaft; 8. Guide plate; 9. Pneumatic rod; 10. Fixing cover; 11. Guide sleeve; 12. Limiting groove; 13. Slot; 14. Drive rod; 15. Connecting seat; 16. Rotating disk; 17. Support plate; 18. Limiting block; 19. Guide block; 20. Groove; 21. Connecting arm; 22. Collar; 23. Inclined groove; 24. Lead screw; 25. Fixing ring; 26. Control arm; 27. End groove; 28. Control shaft; 29. ​​Clamping fork; 30. Drive plate; 31. First swing arm; 32. Horizontal shaft; 33. Second swing arm; 34. Connecting sleeve; 35. Orientation groove; 36. Drive wheel; 37. Second motor. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0027] Example:

[0028] like Figures 1 to 5 As shown, the present invention provides a vibration testing device for agricultural machinery manufacturing, including a shaft to be tested 1 and a pair of bases 2. The top ends of the two bases 2 are connected to a support plate 17 through an adjustment assembly. The two ends of the support plate 17 are hinged to a fixing rod 6. The top ends of the two fixing rods 6 are fixedly connected to a fixing ring 25. A limiting angle assembly is provided between the fixing rods 6 and the support plate 17. A clamping assembly is provided on the fixing ring 25. The shaft to be tested 1 is placed between the two clamping assemblies.

[0029] like Figure 1 and Figure 4 As shown, the clamping assembly includes multiple clamping forks 29 that are slidably engaged on a fixed ring 25. One end of the clamping fork 29 contacts the outside of the shaft 1 to be tested. The free end of the clamping fork 29 has an end groove 27, and a control shaft 28 is fixedly disposed in the end groove 27.

[0030] like Figure 4 As shown, the fixed ring 25 has multiple inclined grooves 23, the control shaft 28 is hinged to a control arm 26, the free end of the control arm 26 is rotatably connected to a collar 22, the fixed ring 25 has a drive plate 30 on one side where the inclined grooves 23 are provided, and the collar 22 is slidably locked in the drive plate 30.

[0031] like Figure 2 and Figure 4 As shown, a support arm 4 is provided on the fixed ring 25, a first motor 5 is provided at the free end of the support arm 4, a lead screw 24 is coaxially connected to the output shaft end of the first motor 5, and a drive plate 30 is passed through the lead screw 24.

[0032] like Figure 1 and Figure 3 As shown, the adjustable distance assembly includes a base 2 on which a guide block 19 is provided. The guide block 19 is slidably connected to the support plate 17 through a slot 13. A connecting arm 21 is hinged to one end of the support plate 17. A limiting groove 12 is provided at the top of the slot 13. A pair of limiting blocks 18 provided at the top of the guide block 19 are respectively locked in the two limiting grooves 12.

[0033] like Figure 1 , Figure 3 and Figure 5 As shown, a groove 20 is provided on the base 2, a rotating disk 16 is rotatably mounted on the groove 20, a connecting seat 15 is rotatably mounted on the rotating disk 16, the free end of the connecting arm 21 is hinged to the connecting seat 15, a second motor 37 is provided on the outside of the base 2, and a drive wheel 36 is coaxially connected to the output shaft end of the second motor 37, and the drive wheel 36 is in contact with the outside of the rotating disk 16.

[0034] The distance adjustment component can adjust the distance between the two pallets 17 and the base 2 to simulate the axle vibration of agricultural machinery on rough roads. When using the distance adjustment component, the second motor is started, which drives the drive wheel 36 coaxially connected to its output shaft to rotate. The rotation of the drive wheel 36 drives the rotating disk 16 to rotate. Since the connecting seat 15 is mounted on the rotating disk 16 and the free end of the connecting arm 21 is hinged to the connecting seat 15, the rotation of the rotating disk 16 will drive the connecting arm 21 to move. Since one end of the connecting arm 21 is hinged to the pallet 17, and the pallet 17 is slidably mounted on the outside of the guide block 19 set on the base 2, the start of the second motor will eventually drive the pallet 17 to move back and forth in the vertical direction. By changing the output shaft speed of the second motor, the vibration frequency of the pallet 17 in the vertical direction can be controlled, thereby simulating different working conditions of agricultural machinery.

[0035] like Figure 2 and Figure 3 As shown, the angle limiting assembly includes a drive rod 14 provided on one side of the support plate 17, a guide sleeve 11 fixedly connected to the free end of the drive rod 14, and a drive shaft 7 eccentrically provided at the bottom end of the fixed rod 6, which is slidably locked in the guide sleeve 11.

[0036] like Figure 1 , Figure 2 and Figure 5 As shown, each of the two bases 2 has an orientation groove 35 at its opposite ends. A guide plate 8 is slidably engaged in the orientation groove 35. The guide plate 8 is horizontally positioned. A fixing cover 10 is provided at the bottom of the guide plate 8. Multiple support legs 3 are evenly arranged at the bottom of the fixing cover 10.

[0037] like Figure 2 and Figure 5 As shown, a pneumatic rod 9 is provided on the inner bottom wall of the fixed cover 10. A connecting sleeve 34 is fixedly connected to the top of the pneumatic rod 9, and a horizontal shaft 32 is rotatably locked at the top of the connecting sleeve 34.

[0038] like Figure 5 As shown, the two support plates are respectively hinged to a pair of first swing arms 31 and a pair of second swing arms 33 at their opposite ends. The free ends of the first swing arms 31 and the second swing arms 33 are both sleeved on the horizontal axis 32. The lengths of the first swing arms 31 and the second swing arms 33 are equal, and the lengths of the first swing arms 31 and the second swing arms 33 are less than the depth of the directional groove 35.

[0039] The angle limiting component can restrict the rotation of the drive rod 14 relative to the support plate 17, which facilitates the device to test the shaft 1 under test with a single type of load. When using the angle limiting component, first start the drive rod 14 to drive the guide sleeve 11 connected to its output shaft end to move. Since the drive shaft 7 with the bottom end of the fixed rod 6 is eccentrically set and slidably locked in the guide sleeve 11, the fixed rod 6 can be moved to the required specified angle and then the current length of the drive rod 14 can be locked.

[0040] When an axial load test is required on the shaft 1 to be tested, the pneumatic rod 9 installed on the inner bottom wall of the drive fixed cover 10 is extended and retracted. The connecting sleeve 34 fixedly connected to the top of the pneumatic rod 9 will drive the horizontal shaft 32 hinged at its top to move, so that the horizontal shaft 32 pulls the first swing arm 31 and the second swing arm 33 to move. The first swing arm 31 and the second swing arm 33 pull the two support plates 17. Since the two support plates 17 are slidably locked at both ends of the guide plate 8 through the directional groove 35, driving the pneumatic rod 9 to extend and retract will cause the support plates 17 to move closer or separate.

[0041] The specific usage and function of this embodiment are as follows:

[0042] The clamping assembly provided in this invention can fix the test shaft 1. When it is necessary to test the axial load or radial load of the test shaft 1, the clamping assembly can correctly load the test shaft 1. When the clamping assembly is needed to clamp the test shaft 1, the motor connected to the fixed ring 25 through the support arm 4 is started. The output shaft of the motor will drive the lead screw 24 coaxially connected to it to rotate. When the lead screw 24 rotates, it will drive the drive plate 30 sleeved on its outer side to move. Since the collar 22 rotatably connected to the free end of the control arm 26 is slidably locked in the drive plate 30, the rotation of the lead screw 24 will only drive the drive plate 30 to translate. When the drive plate 30 translates, it will drive the collar 22 to translate synchronously. When the collar 22 moves, it will push the control arm 26 hinged to it to move. The clamping fork 29 rotatably connected to one end of the control arm 26 will slide along the outer side of the fixed ring 25. The clamping fork 29 is clamped or released by moving the test shaft 1.

[0043] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A vibration testing device for agricultural machinery manufacturing, characterized in that: The device includes a shaft to be tested (1) and a pair of bases (2). The top ends of the two bases (2) are connected to a support plate (17) via an adjustable distance assembly. Both ends of the support plate (17) are hinged to a fixing rod (6). The top ends of the two fixing rods (6) are fixedly connected to a fixing ring (25). A limiting angle assembly is provided between the fixing rods (6) and the support plate (17). A clamping assembly is provided on the fixing ring (25). The shaft to be tested (1) is located between the two clamping assemblies.

2. The vibration testing device for agricultural machinery manufacturing according to claim 1, characterized in that: The clamping assembly includes a plurality of clamping forks (29) that are slidably engaged on the fixing ring (25). One end of the clamping fork (29) is in contact with the outside of the shaft to be tested (1). The free end of the clamping fork (29) is provided with an end groove (27), and a control shaft (28) is fixedly disposed in the end groove (27).

3. The vibration testing device for agricultural machinery manufacturing according to claim 2, characterized in that: The fixed ring (25) has multiple inclined grooves (23), and the control shaft (28) has a control arm (26) hinged to it. The free end of the control arm (26) is rotatably connected to a collar (22). The fixed ring (25) has a drive plate (30) on one side where the inclined grooves (23) are provided, and the collar (22) is slidably locked in the drive plate (30).

4. The vibration testing device for agricultural machinery manufacturing according to claim 3, characterized in that: The fixed ring (25) is provided with a support arm (4), and the free end of the support arm (4) is provided with a first motor (5). The output shaft end of the first motor (5) is coaxially connected to a lead screw (24), and the drive plate (30) passes through the lead screw (24).

5. The vibration testing device for agricultural machinery manufacturing according to claim 4, characterized in that: The adjustable distance assembly includes a guide block (19) on the base (2), the guide block (19) is slidably connected to the tray (17) through a slot (13), a connecting arm (21) is hinged to one end of the tray (17), a limiting groove (12) is provided at the top of the slot (13), and a pair of limiting blocks (18) provided at the top of the guide block (19) are respectively locked in the two limiting grooves (12).

6. The vibration testing device for agricultural machinery manufacturing according to claim 5, characterized in that: The base (2) has a groove (20) and a rotating disk (16) is rotatably mounted on the groove (20). A connecting seat (15) is rotatably mounted on the rotating disk (16). The free end of the connecting arm (21) is hinged to the connecting seat (15). A second motor (37) is provided on the outside of the base (2). A drive wheel (36) is coaxially connected to the output shaft end of the second motor (37). The drive wheel (36) is in contact with the outside of the rotating disk (16).

7. The vibration testing device for agricultural machinery manufacturing according to claim 6, characterized in that: The angle limiting assembly includes a drive rod (14) provided on one side of the support plate (17), a guide sleeve (11) fixedly connected to the free end of the drive rod (14), and a drive shaft (7) eccentrically provided at the bottom end of the fixed rod (6), and the drive shaft (7) is slidably locked in the guide sleeve (11).

8. The vibration testing device for agricultural machinery manufacturing according to claim 7, characterized in that: Two bases (2) are provided with directional grooves (35) at opposite ends. A guide plate (8) is slidably mounted in the directional groove (35). The guide plate (8) is horizontally positioned. A fixing cover (10) is provided at the bottom of the guide plate (8). Multiple support feet (3) are evenly provided at the bottom of the fixing cover (10).

9. A vibration testing device for agricultural machinery manufacturing according to claim 8, characterized in that: A pneumatic rod (9) is provided on the inner bottom wall of the fixed cover (10). A connecting sleeve (34) is fixedly connected to the top of the pneumatic rod (9). A horizontal shaft (32) is rotatably clamped at the top of the connecting sleeve (34).

10. A vibration testing device for agricultural machinery manufacturing according to claim 9, characterized in that: The two pallets are respectively hinged to a pair of first swing arms (31) and a pair of second swing arms (33) at their opposite ends. The free ends of the first swing arms (31) and the second swing arms (33) are both sleeved on the horizontal shaft (32). The first swing arms (31) and the second swing arms (33) are of equal length, and the length of the first swing arms (31) and the second swing arms (33) is less than the depth of the directional groove (35).

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