Vibration test bench for agricultural electromechanical equipment

Abstract

The invention discloses an agricultural electromechanical equipment vibration test bench, and relates to the technical field of agricultural electromechanical equipment vibration test, the agricultural electromechanical equipment vibration test bench comprises a support frame, a test bench and a fixing frame are arranged above the support frame, and the bottom surface of the fixing frame is fixedly connected with the upper surface of the support frame; vibration springs arranged at equal intervals are fixedly installed on the inner wall of the fixing frame, the end, close to the inspection table, of each vibration spring is fixedly connected with the outer surface of the inspection table, a connecting frame is fixedly installed on the bottom face of the inspection table, and sliding grooves are formed in the bottom face of the inspection table and the bottom face of the connecting frame. The bidirectional motor drives the balancing weight to rotate, and the balancing weight is not parallel to the internal rotor of the bidirectional motor, so that stable and continuous vibration can be generated when the bidirectional motor rotates, the motor does not need to drive the cam to rotate to generate vibration, and the vibration simulation wear of the agricultural electromechanical equipment vibration detection test bed is reduced; and the service life of the agricultural electromechanical equipment vibration test bench is prolonged.

Description

Technical Field

[0001] This invention relates to the field of vibration testing technology for agricultural machinery and equipment, and in particular to a vibration testing bench for agricultural machinery and equipment. Background Technology

[0002] Agricultural machinery and equipment are electromechanical devices used to control agricultural machinery. Utilizing seed hulling and screening machines, for example, agricultural machinery and equipment typically operate in harsh environments and have high power consumption, resulting in strong vibrations during operation. Prolonged vibration can damage the electromechanical devices within these machines. Therefore, to ensure the long-term stable operation of agricultural machinery and equipment, vibration testing benches are usually used to conduct vibration tests on the equipment and verify whether its seismic resistance meets the required standards.

[0003] Existing vibration testing benches for agricultural machinery and equipment typically use a motor to drive a cam to rotate, which in turn generates vibration through a telescopic support. However, the cam wears out significantly over time, greatly affecting the service life of the vibration testing bench. Furthermore, the vibration method is relatively simple and cannot simulate the vibration sources of agricultural machinery and equipment from different directions. Consequently, it cannot better simulate the harsh conditions that agricultural machinery and equipment encounters in actual use, thus affecting the accuracy and realism of vibration testing. Summary of the Invention

[0004] The purpose of this invention is to solve the problems that the vibration testing process of agricultural machinery and equipment vibration testing benches causes significant wear, which affects the service life of the benches and fails to better simulate the vibration conditions of agricultural machinery and equipment in actual use. Therefore, this invention proposes a vibration testing bench for agricultural machinery and equipment.

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

[0006] A vibration testing bench for agricultural machinery includes a support frame, with a testing platform and a fixed frame respectively mounted on top of the support frame. The bottom surface of the fixed frame is fixedly connected to the upper surface of the support frame. Vibration springs arranged at equal intervals are fixedly installed on the inner wall of the fixed frame. The end of each vibration spring near the testing platform is fixedly connected to the outer surface of the testing platform. A connecting frame is fixedly installed on the bottom surface of the testing platform. Sliding grooves are formed on the bottom surfaces of both the testing platform and the connecting frame. A threaded rod is rotatably connected inside each sliding groove. A slider is threadedly connected to the outer surface of each threaded rod. Each slider is slidably connected inside the sliding groove. A bidirectional motor is fixedly installed on the bottom surface of each slider. Two counterweights are fixedly installed at the power output end of each bidirectional motor. A limit frame is fixedly installed on the upper surface of the testing platform. A pressure plate is provided inside the limit frame. A screw is threadedly connected inside the limit frame. The bottom end of the screw passes through the limit frame and contacts the upper surface of the pressure plate.

[0007] Preferably, mounting plates are fixedly installed on both sides of the support frame, and each mounting plate has a mounting through groove on its upper surface.

[0008] Preferably, four pressure springs are fixedly installed on the inner bottom wall of the support frame, and the top of each pressure spring is fixedly connected to the bottom surface of the inspection table.

[0009] Preferably, each of the bidirectional motors is fitted with a protective cover on its outer surface, the upper surface of each protective cover is fixedly connected to the bottom surface of the slider, and each of the protective covers has heat dissipation grooves arranged at equal intervals on its outer surface.

[0010] Preferably, a connecting plate is fixedly installed at the end of each threaded rod away from the slider, and a handle is fixedly installed on the bottom surface of each connecting plate.

[0011] Preferably, two reinforcing blocks are fixedly installed on both the front and back of the limiting frame, and the bottom surface of each reinforcing block is fixedly connected to the upper surface of the inspection table.

[0012] Preferably, the limiting frame has two limiting rods slidably connected inside, and the bottom end of each limiting rod passes through the limiting frame and is fixedly connected to the upper surface of the pressure plate.

[0013] Preferably, a rotating bearing is fitted at the bottom end of the screw, and the bottom surface of the outer ring of the rotating bearing is fixedly connected to the upper surface of the pressure plate.

[0014] Preferably, the outer surface of the screw is threaded with a threaded cylinder, and the bottom surface of the threaded cylinder is fixedly connected to the upper surface of the limiting frame.

[0015] Preferably, a handle is fixedly installed at the top of the screw, and two sets of positioning holes are provided on the upper surface of the inspection table.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention utilizes a bidirectional motor to drive a counterweight to rotate. Because the counterweight is not parallel to the internal rotor of the bidirectional motor, stable and continuous vibration is generated when the motor rotates. This eliminates the need for the motor to drive a cam, reducing wear and tear on the vibration simulation test bench for agricultural machinery and increasing its service life. By incorporating two threaded rods with sliding grooves and a threaded connection between the threaded rods and sliders, the two sliders and two bidirectional motors can be moved manually in the left-right and front-back directions. This allows for the simulation of vibration sources and modes of agricultural machinery from different directions, enabling the test bench to better simulate the harsh environments encountered during actual use. This improves the accuracy and realism of vibration testing. Furthermore, a vibration spring and a fixed frame maintain the test bench in a semi-suspended state. The vibration spring amplifies the vibration amplitude generated by the bidirectional motor driving the counterweight, resulting in superior vibration simulation performance for the test bench. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a vibration testing bench for agricultural machinery and equipment proposed in this invention;

[0019] Figure 2 This is a schematic diagram of the support frame structure of a vibration testing bench for agricultural machinery and equipment proposed in this invention;

[0020] Figure 3 This is a schematic cross-sectional view of the test bench structure of a vibration testing bench for agricultural machinery and equipment proposed in this invention.

[0021] Figure 4 This is a schematic diagram of the bidirectional motor structure of a vibration testing bench for agricultural machinery and equipment proposed in this invention;

[0022] Figure 5 This is a schematic cross-sectional view of the connecting frame structure of a vibration testing bench for agricultural machinery and equipment proposed in this invention;

[0023] Figure 6 This is a schematic diagram of the limiting frame structure of a vibration testing bench for agricultural machinery and equipment proposed in this invention;

[0024] Figure 7This is a schematic diagram of the screw structure of a vibration testing bench for agricultural machinery and equipment proposed in this invention.

[0025] In the diagram: 1. Support frame; 2. Inspection table; 3. Fixing frame; 4. Vibration spring; 5. Connecting frame; 6. Sliding groove; 7. Threaded rod; 8. Slider; 9. Bidirectional motor; 10. Counterweight; 11. Limiting frame; 12. Pressure plate; 13. Screw; 14. Mounting plate; 15. Mounting through groove; 16. Pressure spring; 17. Protective cover; 18. Heat dissipation groove; 19. Connecting plate; 20. Handle; 21. Reinforcing block; 22. Limiting rod; 23. Rotary bearing; 24. Threaded cylinder; 25. Grip; 26. Positioning hole. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Reference Figure 1 and 2 A vibration testing bench for agricultural machinery and equipment includes a support frame 1, an inspection table 2 and a fixing frame 3 respectively arranged on the top of the support frame 1. The bottom surface of the fixing frame 3 is fixedly connected to the upper surface of the support frame 1. Mounting plates 14 are fixedly installed on both sides of the support frame 1. Each mounting plate 14 has a mounting groove 15 on its upper surface. The mounting plates 14, together with the mounting grooves 15, can fix the support frame 1 in the required position, so that the device can be used stably and the installation of the device can be convenient.

[0029] Reference Figure 1 and 2 Vibration springs 4 are fixedly installed at equal intervals on the inner wall of the fixed frame 3. The end of each vibration spring 4 near the inspection table 2 is fixedly connected to the outer surface of the inspection table 2. Four pressure springs 16 are fixedly installed on the inner bottom wall of the support frame 1. The top of each pressure spring 16 is fixedly connected to the bottom surface of the inspection table 2. The pressure springs 16 can better support the inspection table 2, reduce the pressure of the vibration springs 4, prevent the vibration springs 4 from bending and deforming, and at the same time, will not affect the smooth vibration of the inspection table 2.

[0030] Reference Figure 3 , 4 The bottom surface of the inspection table 2 is fixedly equipped with a connecting frame 5. Both the bottom surface of the inspection table 2 and the bottom surface of the connecting frame 5 are provided with sliding grooves 6. Each sliding groove 6 is rotatably connected with a threaded rod 7. Each threaded rod 7 is fixedly equipped with a connecting plate 19 at the end away from the slider 8. Each connecting plate 19 is fixedly equipped with a handle 20 on its bottom surface. By manually holding the handle 20 and cooperating with the connecting plate 19, the operator can manually rotate the threaded rod 7, which increases the convenience of manual operation of the threaded rod 7.

[0031] Reference Figure 4 and 5 Each threaded rod 7 has a slider 8 threadedly connected to its outer surface. Each slider 8 is slidably connected inside the sliding groove 6. A bidirectional motor 9 is fixedly installed on the bottom surface of each slider 8. A protective cover 17 is fitted on the outer surface of each bidirectional motor 9. The upper surface of each protective cover 17 is fixedly connected to the bottom surface of the slider 8. A heat dissipation groove 18 is evenly arranged on the outer surface of each protective cover 17. The protective cover 17 and the heat dissipation groove 18 can protect the bidirectional motor 9 while not affecting the smooth heat dissipation of the bidirectional motor 9, thus increasing the safety of the bidirectional motor 9 during use.

[0032] Reference Figure 4 , 5 In the test bench 2, the threaded rod 7, slider 8, and bidirectional motor 9 inside the test bench 2 are arranged in a cross shape with the threaded rod 7, slider 8, and bidirectional motor 9 inside the connecting frame 5. A limit frame 11 is fixedly installed on the upper surface of the test bench 2. Two reinforcing blocks 21 are fixedly installed on the front and back of the limit frame 11. The bottom surface of each reinforcing block 21 is fixedly connected to the upper surface of the test bench 2. The reinforcing blocks 21 can increase the connection between the limit frame 11 and the test bench 2, making the limit frame 11 less prone to loosening and increasing the pressure bearing capacity of the limit frame 11.

[0033] Reference Figure 1 The limiting frame 11 has a pressure plate 12 inside, and a screw 13 is threadedly connected inside the limiting frame 11. The bottom end of the screw 13 passes through the limiting frame 11 and contacts the upper surface of the pressure plate 12. Two limiting rods 22 are slidably connected inside the limiting frame 11. The bottom end of each limiting rod 22 passes through the limiting frame 11 and is fixedly connected to the upper surface of the pressure plate 12. By using the limiting rods 22 to slide inside the limiting frame 11, the operation mode of the pressure plate 12 can be restricted, so that the pressure plate 12 can only move up and down and will not rotate with the screw 13.

[0034] Reference Figure 7A rotating bearing 23 is fitted at the bottom of the screw 13. The bottom surface of the outer ring of the rotating bearing 23 is fixedly connected to the upper surface of the pressure plate 12. The rotating bearing 23 can connect the screw 13 and the pressure plate 12 together, ensuring that the pressure plate 12 moves smoothly up and down while allowing the screw 13 to rotate smoothly, thus reducing the wear caused by the screw 13 and the pressure plate 12.

[0035] Reference Figure 7 The outer surface of the screw 13 is threadedly connected to a threaded cylinder 24. The bottom surface of the threaded cylinder 24 is fixedly connected to the upper surface of the limit frame 11. The threaded cylinder 24 can increase the threaded connection area between the limit frame 11 and the screw 13, making the screw 13 less prone to swinging during use and improving the load-bearing capacity of the screw 13.

[0036] Reference Figure 2 and 7 A handle 25 is fixedly installed at the top of the screw 13. Two sets of positioning holes 26 are provided on the upper surface of the inspection table 2. The handle 25 allows the staff to easily rotate the screw 13 manually, increasing the convenience of manual operation of the screw 13. The positioning holes 26 can be used to further reinforce the agricultural machinery and equipment under test by using the fixing parts of the positioning bolts, preventing the agricultural machinery and equipment under test from loosening during testing, and increasing the stability of the agricultural machinery and equipment under test.

[0037] The specific working principle of this invention is as follows:

[0038] In use, first connect the bidirectional motor 9 to the power supply, then place the agricultural machinery and equipment to be tested on the test bench 2. At this time, by rotating the screw 13 through the handle 25 in conjunction with the limiting rod 22, the pressure plate 12 is moved downward, thereby clamping and fixing the agricultural machinery and equipment to be tested. Then, the power provided by the bidirectional motor 9 drives the counterweight 10 to rotate. Since the counterweight 10 is not parallel to the internal rotor of the bidirectional motor 9, a stable and continuous vibration can be generated when the bidirectional motor 9 rotates, eliminating the need for the motor to drive the cam to rotate and generate vibration. This greatly reduces the vibration simulation wear of the agricultural machinery and equipment vibration test bench, thereby effectively increasing the overall service life of the agricultural machinery and equipment vibration test bench. Then, by using the cross-shaped distribution of the two threaded rods 7, combined with the sliding groove 6 and the threaded connection between the threaded rods 7 and the slider 8, the handle can be used to rotate the counterweight 10. The two sliders 8 and two bidirectional motors 9 are moved in the left-right and front-back directions by manually rotating the threaded rod 7 of the connecting plate 19 and the connecting plate 20. This allows the vibration source and vibration mode of agricultural machinery and equipment during actual use to be simulated from different directions. This enables the vibration test bench of agricultural machinery and equipment to better simulate the harsh environment of agricultural machinery and equipment during actual use, thereby greatly improving the vibration test accuracy and realism of the vibration test bench. Finally, the vibration spring 4, together with the fixed frame 3 and the pressure spring 16, can keep the test bench 2 in a semi-suspended state. At this time, the vibration generated by the bidirectional motor 9 driving the counterweight 10 to rotate can amplify the vibration amplitude to a certain extent by the vibration spring 4 and the pressure spring 16, thereby making the vibration simulation performance of the vibration test bench of agricultural machinery and equipment more superior and realistic.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A vibration testing bench for agricultural machinery and equipment, comprising a support frame (1), characterized in that, An inspection table (2) and a fixing frame (3) are respectively provided above the support frame (1). The bottom surface of the fixing frame (3) is fixedly connected to the upper surface of the support frame (1). Vibration springs (4) are fixedly installed at equal intervals on the inner wall of the fixing frame (3). The end of each vibration spring (4) near the inspection table (2) is fixedly connected to the outer surface of the inspection table (2). A connecting frame (5) is fixedly installed on the bottom surface of the inspection table (2). Sliding grooves (6) are opened on the bottom surface of the inspection table (2) and the bottom surface of the connecting frame (5). A threaded rod (7) is rotatably connected inside each sliding groove (6). The outer surface of the grooved rod (7) is threaded with a slider (8), each slider (8) is slidably connected inside the sliding groove (6), the bottom surface of each slider (8) is fixedly installed with a bidirectional motor (9), the power output end of each bidirectional motor (9) is fixedly installed with two counterweights (10), the upper surface of the inspection table (2) is fixedly installed with a limit frame (11), the inside of the limit frame (11) is provided with a pressure plate (12), the inside of the limit frame (11) is threaded with a screw (13), the bottom end of the screw (13) passes through the limit frame (11) and contacts the upper surface of the pressure plate (12).

2. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, Mounting plates (14) are fixedly installed on both sides of the support frame (1), and each mounting plate (14) has a mounting through groove (15) on its upper surface.

3. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, The inner bottom wall of the support frame (1) is fixedly installed with four pressure springs (16), and the top of each pressure spring (16) is fixedly connected to the bottom surface of the inspection table (2).

4. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, Each of the bidirectional motors (9) is covered with a protective cover (17) on its outer surface. The upper surface of each protective cover (17) is fixedly connected to the bottom surface of the slider (8). Each of the protective covers (17) has heat dissipation grooves (18) arranged at equal intervals on its outer surface.

5. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, Each of the threaded rods (7) has a connecting plate (19) fixedly installed at the end away from the slider (8), and a handle (20) is fixedly installed on the bottom surface of each connecting plate (19).

6. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, The limiting frame (11) has two reinforcing blocks (21) fixedly installed on its front and back sides, and the bottom surface of each reinforcing block (21) is fixedly connected to the upper surface of the inspection table (2).

7. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, The limiting frame (11) has two limiting rods (22) slidably connected inside. The bottom end of each limiting rod (22) passes through the limiting frame (11) and is fixedly connected to the upper surface of the pressure plate (12).

8. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, The bottom end of the screw (13) is fitted with a rotating bearing (23), and the bottom surface of the outer ring of the rotating bearing (23) is fixedly connected to the upper surface of the pressure plate (12).

9. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, The screw (13) has a threaded cylinder (24) threadedly connected to its outer surface, and the bottom surface of the threaded cylinder (24) is fixedly connected to the upper surface of the limiting frame (11).

10. The vibration testing bench for agricultural machinery and equipment according to claim 1, characterized in that, A handle (25) is fixedly installed at the top of the screw (13), and two sets of positioning holes (26) are provided on the upper surface of the inspection table (2).

Images