Servo hydraulic double-cylinder alternate loading device based on lead screw transmission

Abstract

The utility model provides a servo hydraulic double-cylinder alternate loading device based on lead screw transmission, which relates to the technical field of hydraulic double-cylinder alternate loading devices, and comprises a mounting rack, a lead screw A and a lead screw B are rotatably connected in the mounting rack, a guide rod is fixedly mounted in the mounting rack, a belt pulley A is fixedly mounted at one end of the lead screw A, and a belt pulley B is fixedly mounted at the other end of the lead screw B; according to the utility model, the positioning plate, the bearing, the hydraulic rod, the connecting block, the connecting rod, the pull head and the tension spring are arranged, so that the output position of the hydraulic rod can be smoothly controlled, meanwhile, the continuous loading state can be kept by alternately loading the hydraulic double cylinders, and the intermittency of a traditional single-cylinder system is avoided, so that the working efficiency and the loading precision are improved; the position of the output end of the hydraulic rod can be rapidly and smoothly adjusted by a worker, the situation that equipment needs to be adjusted before use is avoided, the adjusting steps are simplified, and the overall working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic double-cylinder alternating loading devices, in particular to a servo hydraulic double-cylinder alternating loading device based on screw drive. Background Art

[0002] The servo hydraulic double-cylinder alternating loading device based on screw drive is a mechanical system used to achieve precise control in hydraulic testing and loading scenarios. This device is usually used to simulate complex mechanical environments and is widely applied in fields such as construction machinery, automobile manufacturing, aerospace, and material mechanics performance testing. In these application scenarios, it is often necessary to apply precise and controllable forces or displacements to systems or components for performance evaluation or fatigue tests. Traditional hydraulic loading systems usually use single-cylinder hydraulic systems, which generate thrust or pull through hydraulic cylinders to apply the loading force. However, traditional hydraulic systems have some problems, such as slow response speed, poor system stability, and difficulty in ensuring accuracy. In the case of high-frequency loading, alternating loading, and long-term stable loading, it is very difficult for traditional hydraulic systems to achieve precise control. At the same time, in the case of ordinary loading devices, when the hydraulic rod is transported to a suitable position, the output position of the hydraulic rod is fixed and cannot be adjusted according to needs. The equipment also needs to be adjusted before use, which reduces the overall usage efficiency, complicates the adjustment process, and has poor practicability and needs to be improved. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the technical problems raised in the above background art.

[0004] The utility model adopts the following technical scheme: A servo hydraulic double-cylinder alternating loading device based on screw drive, including a mounting frame. Inside the mounting frame, a screw rod A and a screw rod B are rotatably connected. Inside the mounting frame, a guide rod is fixedly installed. One end of the screw rod A is fixedly installed with a pulley A, and one end of the screw rod B is fixedly installed with a pulley B. A transmission belt is connected between the pulley A and the pulley B for transmission. On the side of the mounting frame, a fixed frame is fixedly installed. On the upper surface of the fixed frame, a motor is fixedly installed. Sliders are threadedly connected to the surfaces of the screw rod A and the screw rod B. On the upper surface of the slider, a positioning plate is fixedly installed. Inside the positioning plate, a bearing is fixedly installed. On the upper surface of the positioning plate, a hydraulic rod is rotatably connected. On the side of the hydraulic rod, a connecting block is fixedly installed. Inside the connecting block, a connecting rod is slidably connected. At the top of the connecting rod, a pulling head is fixedly installed. On the lower surface of the pulling head, a pulling spring is fixedly installed.

[0005] Preferably, the pulley A and the pulley B are rotatably connected to the mounting frame, and the guide rods are all arranged at the bottom ends of the lead screw A and the lead screw B. Here, through the rotational connection and the assistance of the guide rods, it is ensured that the entire loading device has good balance and anti-eccentric load capacity during operation.

[0006] Preferably, the output end of the motor is fixedly connected to the pulley A, the slider is slidably connected to the mounting frame and the guide rods, and the hydraulic rod is rotatably connected to the positioning plate through a bearing. Here, driven by the motor, the loading device can achieve automated operation, reduce manual intervention, and improve work efficiency.

[0007] Preferably, a limiting groove is formed on the surface of the positioning plate, the connecting rod is slidably connected to the limiting groove, and one end of the tension spring is fixedly connected to the connecting block. Here, through the limitation of the limiting groove, it is ensured that the movement direction of the connecting rod is consistent with the preset trajectory, reducing the error rate and improving the work reliability.

[0008] Preferably, an oil storage box is fixedly installed on the side of the slider, a delivery pipe is fixedly installed on the side of the oil storage box, an inlet pipe is fixedly installed on the side of the oil storage box, a plug is threadedly connected to the top end of the inlet pipe, and a compression air bag is fixedly installed on the surface of the oil storage box. Here, the combined design of the oil storage box and the delivery pipe effectively enhances the stability of the hydraulic system and avoids failures caused by lack of oil during the operation of the equipment.

[0009] Preferably, the delivery pipe is arranged inside the slider, and the oil storage box is communicated with the lead screw A and the lead screw B through the delivery pipe. Here, this design extends the service life of the lead screw, reduces the maintenance frequency, and improves the overall operating efficiency of the equipment.

[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0011] 1. In the present utility model, by setting the positioning plate, bearing, hydraulic rod, connecting block, connecting rod, pulling head, and tension spring, it is possible to smoothly control the output position of the hydraulic rod. At the same time, the hydraulic double-cylinder alternating loading can maintain a continuous loading state, avoiding the intermittency of the traditional single-cylinder system, thereby improving work efficiency and loading accuracy, enabling workers to quickly and smoothly adjust the position of the output end of the hydraulic rod, avoiding the need to adjust the equipment before use, simplifying the adjustment steps, and improving the overall work efficiency.

[0012] 2. In the present utility model, by providing an oil storage box, a delivery pipe, an oil inlet pipe, a plug, and a compression airbag, it is possible to store lubricating oil in the oil storage box, so that when the slider moves, it can automatically lubricate and maintain the positions of lead screw A and lead screw B. When it is necessary to deliver oil to a specific position, the slider can be first moved to a suitable position, and then by pressing the compression airbag, the oil can be delivered through the delivery pipe to the positions selected by lead screw A and lead screw B for maintenance, which has high practicability. Description of the Drawings

[0013] Figure 1 FIG. is a schematic diagram of the overall structure of a servo-hydraulic double-cylinder alternating loading device based on lead screw drive proposed by the present utility model;

[0014] Figure 2 FIG. is an exploded view of the hydraulic rod, connecting block, and connecting rod of a servo-hydraulic double-cylinder alternating loading device based on lead screw drive proposed by the present utility model;

[0015] Figure 3 FIG. is an exploded view of the oil storage box of a servo-hydraulic double-cylinder alternating loading device based on lead screw drive proposed by the present utility model;

[0016] Figure 4 A servo-hydraulic double-cylinder alternating loading device based on lead screw drive proposed by the present utility model Figure 2 Enlarged view at A in;

[0017] Figure 5 A servo-hydraulic double-cylinder alternating loading device based on lead screw drive proposed by the present utility model Figure 3 Enlarged view at B in.

[0018] Legend Explanation:

[0019] 1. Mounting frame; 2. Lead screw A; 3. Lead screw B; 4. Guide rod; 5. Pulley A; 6. Pulley B; 7. Transmission belt; 8. Fixed frame; 9. Motor; 10. Slider; 11. Positioning plate; 12. Bearing; 13. Hydraulic rod; 14. Connecting block; 15. Connecting rod; 16. Pull head; 17. Pull spring; 18. Limit groove; 19. Oil storage box; 20. Delivery pipe; 21. Oil inlet pipe; 22. Plug; 23. Compression airbag. Detailed Embodiment

[0020] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0022] Embodiment 1

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution: a servo hydraulic double-cylinder alternating loading device based on screw drive, including a mounting frame 1. Inside the mounting frame 1, a screw A 2 and a screw B 3 are rotatably connected. Inside the mounting frame 1, a guide rod 4 is fixedly installed. One end of the screw A 2 is fixedly installed with a pulley A 5, and one end of the screw B 3 is fixedly installed with a pulley B 6. A transmission belt 7 is connected between the pulley A 5 and the pulley B 6. On the side surface of the mounting frame 1, a fixed frame 8 is fixedly installed. On the upper surface of the fixed frame 8, a motor 9 is fixedly installed. Threaded on the surfaces of the screw A 2 and the screw B 3 are sliders 10. On the upper surface of the slider 10, a positioning plate 11 is fixedly installed. Inside the positioning plate 11, a bearing 12 is fixedly installed. Rotatably connected to the upper surface of the positioning plate 11 is a hydraulic rod 13. On the side surface of the rod of the hydraulic rod 13, a connecting block 14 is fixedly installed. Slidably connected inside the connecting block 14 is a connecting rod 15. At the top end of the connecting rod 15, a pulling head 16 is fixedly installed. On the lower surface of the pulling head 16, a pulling spring 17 is fixedly installed. Through the connection of the pulley and the transmission belt 7, the synchronous rotation of the screw A 2 and the screw B 3 is realized, ensuring the coordinated alternation loading process of the double cylinders. When the motor 9 is started, the screw A and the screw B simultaneously drive their respective sliders 10 to move, thereby controlling the loading action of the hydraulic rod 13. The design of the bearing 12 system enables the angle of the hydraulic rod 13 to be adjusted flexibly, suitable for the loading requirements under different working conditions. This synchronous transmission structure ensures the smoothness and precision of the device during the double-cylinder alternating loading. It can not only effectively avoid the uneven phenomenon that may occur during the single-cylinder loading process, but also improve the loading efficiency of the system. The pulley A 5 and the pulley B 6 are rotatably connected to the mounting frame 1. The guide rods 4 are all arranged at the bottom ends of the screw A 2 and the screw B 3. The pulley A 5 and the pulley B 6 are rotationally connected, ensuring the synchronous rotation of the screw A and the screw B. The setting of the guide rod 4 improves the stability of the screw. The output end of the motor 9 is fixedly connected to the pulley A 5. The slider 10 is slidably connected to the mounting frame 1 and the guide rod 4. The hydraulic rod 13 is rotatably connected to the positioning plate 11 through the bearing 12. The motor 9 drives the screw A through the pulley A 5 to realize the rotation of the screw. When the screw rotates, the slider 10 can slide along the guide rod 4. On the surface of the positioning plate 11, a limiting groove 18 is provided. The connecting rod 15 is slidably connected to the limiting groove 18. One end of the pulling spring 17 is fixedly connected to the connecting block 14. The design of the limiting groove 18 ensures the more precise sliding process of the connecting rod 15 and cooperates with the pulling spring 17 to complete the loading and reset actions.

[0024] Embodiment 2

[0025] Please refer to Figures 1-5 , on the side of the slider 10, an oil storage box 19 is fixedly installed. On the side of the oil storage box 19, a delivery pipe 20 is fixedly installed. On the side of the oil storage box 19, an oil inlet pipe 21 is fixedly installed. The top end of the oil inlet pipe 21 is threadedly connected with a plug 22. On the surface of the oil storage box 19, a compression airbag 23 is fixedly installed. The oil storage box 19 on the slider 10 provides necessary lubrication and oil pressure support for the hydraulic system, ensuring the smooth operation of the hydraulic rod 13. The delivery pipe 20 is arranged inside the slider 10. The oil storage box 19 is connected to the lead screw A2 and the lead screw B3 through the delivery pipe 20. Through internal connection of the delivery pipe 20, the lubricating oil circulation between the oil storage box 19 and the lead screw A2 and the lead screw B3 is realized, ensuring the smooth operation of the lead screw during long-term work.

[0026] Working principle: First, when in use, first grasp the pull head 16 and pull it, so that the pull head 16 drives the connecting rod 15 to move, and the connecting rod 15 slides at the positions of the connecting block 14 and the positioning plate 11. When the connecting rod 15 slides out of the inside of the positioning plate 11, the hydraulic rod 13 can be grasped and rotated, so that the hydraulic rod 13 rotates on the positioning plate 11 through the bearing 12. When the hydraulic rod 13 rotates to a suitable position, the pull head 16 can be released, so that the connecting rod 15 drives the pull head 16 and the connecting rod 15 to move through the tension spring 17, and the connecting rod 15 slides from the inside of the connecting block 14 to the inside of the positioning plate 11, thereby clamping and limiting the hydraulic rod 13. When in use, the motor 9 can be driven to drive the pulley A5 to rotate. Through the rotation of the pulley A5, the pulley B6 can be rotated through the transmission belt 7, so that the lead screw A2 and the lead screw B3 rotate, and thus the lead screw A2 and the lead screw B3 rotate inside the mounting frame 1. When the lead screw A2 and the lead screw B3 rotate, the slider 10 can be driven to move, and the slider 10 slides at the positions of the mounting frame 1 and the guide rod 4, so that the hydraulic rod 13 moves, and the two hydraulic rods 13 are alternately loaded. When the slider 10 moves, the lubricating oil inside the oil storage box 19 can be delivered to the positions of the lead screw A2 and the lead screw B3 through the delivery pipe 20, so that the lead screw A2 and the lead screw B3 are lubricated. When the inside of the oil storage box 19 needs to be filled with lubricating oil, the plug 22 can be grasped and rotated to remove the plug 22 from the oil inlet pipe 21, and then the lubricating oil can be poured in through the position of the oil inlet pipe 21. When oil needs to be output and lubricated at a specific position, the compression airbag 23 can be pressed, so that the oil can be smoothly delivered to the specified positions on the surfaces of the lead screw A2 and the lead screw B3 through the delivery pipe 20.

[0027] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A servo hydraulic double-cylinder alternating loading device based on screw drive, comprising a mounting frame (1), characterized in that: The mounting frame (1) is internally rotatably connected with a screw rod A (2) and a screw rod B (3), the mounting frame (1) is internally fixed with a guide rod (4), one end of the screw rod A (2) is fixedly installed with a pulley A (5), one end of the screw rod B (3) is fixedly installed with a pulley B (6), a transmission belt (7) is connected between the pulley A (5) and the pulley B (6), a fixing frame (8) is fixedly installed on the side of the mounting frame (1), a motor (9) is fixedly installed on the upper surface of the fixing frame (8), the screw rod A (2) and the screw rod B (3) are fixedly installed with a guide rod (4), one end of the screw rod A (2) is fixedly installed with a pulley A (5), one end of the screw rod B (3) is fixedly installed with a pulley B (6), a transmission belt (7) is connected between the pulley A (5) and the pulley B (6), a fixing frame (8) is fixedly installed on the side of the mounting frame (1), a motor (9) is fixedly installed on the upper surface of the fixing frame (8), and the screw rods A (2) and B The surface of (3) is threadedly connected to a slider (10), a positioning plate (11) is fixedly installed on the upper surface of the slider (10), a bearing (12) is fixedly installed inside the positioning plate (11), a hydraulic rod (13) is rotatably connected to the upper surface of the positioning plate (11), a connecting block (14) is fixedly installed on the side of the hydraulic rod (13), a connecting rod (15) is slidably connected inside the connecting block (14), a pull head (16) is fixedly installed on the top of the connecting rod (15), and a tension spring (17) is fixedly installed on the lower surface of the pull head (16).

2. The servo hydraulic double-cylinder alternating loading device based on screw drive according to claim 1 is characterized in that: The pulley A (5) and the pulley B (6) are rotatably connected to the mounting frame (1), and the guide rods (4) are arranged at the bottom ends of the screw rods A (2) and the screw rods B (3).

3. The servo hydraulic double-cylinder alternating loading device based on screw drive according to claim 1 is characterized in that: The output end of the motor (9) is fixedly connected to the pulley A (5), the slider (10) is slidably connected to the mounting frame (1) and the guide rod (4), and the hydraulic rod (13) is rotationally connected to the positioning plate (11) via a bearing (12).

4. The servo hydraulic double-cylinder alternating loading device based on screw drive according to claim 1 is characterized in that: A limiting groove (18) is provided on the surface of the positioning plate (11), the connecting rod (15) is slidably connected to the limiting groove (18), and one end of the tension spring (17) is fixedly connected to the connecting block (14).

5. The servo hydraulic double-cylinder alternating loading device based on screw drive according to claim 1 is characterized in that: An oil storage box (19) is fixedly mounted on the side of the slider (10), a delivery pipe (20) is fixedly mounted on the side of the oil storage box (19), an oil inlet pipe (21) is fixedly mounted on the side of the oil storage box (19), a plug (22) is threadedly connected to the top end of the oil inlet pipe (21), and a compression air bag (23) is fixedly mounted on the surface of the oil storage box (19).

6. The servo hydraulic double-cylinder alternating loading device based on screw drive according to claim 5 is characterized in that: The delivery pipe (20) is arranged inside the slider (10), and the oil storage box (19) is connected to the screw rod A (2) and the screw rod B (3) through the delivery pipe (20).

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