Electro-hydraulic servo driving device

Abstract

The utility model discloses an electro-hydraulic servo driving device which comprises a hydraulic driver, an oil inlet formed in the top of the hydraulic driver, a flow guide filter screen installed in the oil inlet and a U-shaped pipe, the two ends of the U-shaped pipe are connected to the bottom of the oil inlet, a filter screen is installed in one end of the U-shaped pipe, two clamping grooves are formed in the other end of the U-shaped pipe, and the U-shaped pipe is connected with the bottom of the oil inlet. Clamping blocks are clamped in the two clamping grooves, mounting rings are connected to the corresponding sides of the two clamping blocks, and a discharging hopper is mounted at the bottoms of the mounting rings. Under the matching action of the U-shaped pipe and the flow guide filter screen, hydraulic oil is filtered by the flow guide filter screen when entering the oil inlet, impurities are brought into the U-shaped pipe from the connecting pipe by the hydraulic oil from the oil inlet, the impurities are prevented from flowing back through the filter screen, the two second valves are closed, the flange plate is disassembled, and the U-shaped pipe is taken down to be cleaned, so that concentrated cleaning of the impurities is facilitated; and the maintenance cost is reduced, meanwhile, the U-shaped pipe can be taken down without shutdown operation, and continuous operation of the system is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of drive devices, in particular to an electro-hydraulic servo drive device. Background Art

[0002] With the rapid development of modern industrial technology, electro-hydraulic servo systems have been widely used in the field of automation control due to their high precision, high response speed and high power output. As the core component of the electro-hydraulic servo system, the performance of the electro-hydraulic servo drive directly affects the stability and reliability of the entire system. In the hydraulic transmission system of the electro-hydraulic servo drive, the oil inlet and outlet are crucial parts, responsible for the supply and discharge of hydraulic oil. However, the electro-hydraulic servo drive in the prior art still has certain defects when in use and needs to be improved;

[0003] When the electro-hydraulic servo drive device in the prior art is in use, hydraulic oil enters the hydraulic drive from the oil inlet to generate power or perform an action. Since the oil in the hydraulic system may carry impurities, particles or pollutants during the circulation process, a filter is usually used in the prior art to filter the impurities, but during the filtering process, it is difficult to handle the filter and impurities. The impurities or pollutants are stored in the filter. After use, it is usually necessary to shut down and unload the entire filter device. The operation is cumbersome and time-consuming and labor-intensive, which not only affects the continuous operation of the system, but also increases maintenance costs and downtime losses. Therefore, an electro-hydraulic servo drive device is proposed to overcome the above-mentioned defects. Utility Model Content

[0004] The utility model aims to solve the disadvantage of the prior art that it is inconvenient to clean the filtered objects, and proposes an electro-hydraulic servo drive device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An electro-hydraulic servo drive device comprises a hydraulic drive. An oil inlet is arranged on the top of the hydraulic drive, and a flow guide filter is installed inside the oil inlet.

[0007] It also includes a U-shaped tube, both ends of which are connected to the bottom of the oil inlet, a filter screen is installed inside one end of the U-shaped tube, and two card slots are opened inside the other end of the U-shaped tube, and blocks are clamped in the two card slots. The two blocks are connected to mounting rings on one side, and a drop hopper is installed at the bottom of the mounting ring.

[0008] Preferably, a first valve is provided at the top of the oil inlet, and the first valve is located between the two ends of the U-shaped tube.

[0009] Preferably, two connecting pipes are passed through the bottom of the oil inlet, and the two connecting pipes are both provided with a second valve.

[0010] Preferably, flanges are provided at both ends of the two connecting pipes and the U-shaped pipe, and bolts are connected between the two corresponding flanges.

[0011] Preferably, the diversion filter is located at the top of the connecting pipe, and the filter is located at the bottom of the connecting pipe.

[0012] Preferably, the drop hopper is funnel-shaped.

[0013] The utility model has the following beneficial effects:

[0014] 1. With the cooperation of the U-shaped tube and the guide filter, when the hydraulic oil enters the oil inlet, it is filtered by the guide filter, and impurities are brought into the U-shaped tube from the oil inlet by the hydraulic oil from the connecting pipe, and the filter prevents the impurities from flowing back. When cleaning is needed, close the two second valves and disassemble the flange so that the U-shaped tube can be removed for cleaning, which facilitates the centralized cleaning of impurities and reduces the maintenance cost. At the same time, the U-shaped tube can be removed without stopping the machine, which facilitates the continuous operation of the system;

[0015] 2. With the cooperation of the clamping block and the hopper, when impurities enter the U-shaped tube from the oil inlet through the connecting pipe, they enter the U-shaped tube from the wide opening at the top of the hopper as the narrow opening, which can prevent the impurities from flowing back. At the same time, when cleaning the U-shaped tube, the hopper is taken out of the U-shaped tube through the clamping block and taken out of the U-shaped tube, so that the U-shaped tube can be easily cleaned. This increases the maintenance efficiency and facilitates the cleaning operation of the device, thereby increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the hydraulic drive;

[0017] Figure 2 It is the structural schematic diagram of the oil inlet;

[0018] Figure 3 It is a structural schematic diagram of a U-shaped tube;

[0019] Figure 4 It is a schematic diagram of the structure of the drop hopper.

[0020] In the figure: 1, hydraulic driver; 2, oil inlet; 3, first valve; 4, guide filter; 5, connecting pipe; 501, second valve; 6, flange; 7, U-shaped pipe; 8, filter; 9, mounting ring; 10, block; 11, drop hopper. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 , an electro-hydraulic servo drive device, comprising a hydraulic driver 1, an oil inlet 2 is arranged on the top of the hydraulic driver 1, a first valve 3 is arranged on the top of the oil inlet 2, the first valve 3 is located between the two ends of a U-shaped tube 7, the first valve 3 is opened, hydraulic oil can enter the hydraulic driver 1, the first valve 3 is closed, the guide filter 4 can be cleaned, the oil inlet 2 is installed with a guide filter 4, the guide filter 4 is located on the top of a connecting pipe 5, the guide filter 4 is tiltedly arranged in the oil inlet 2, the filter 8 is located at the bottom of the connecting pipe 5, two connecting pipes 5 are penetrated at the bottom of the oil inlet 2, the two connecting pipes 5 are each provided with a second valve 501, the two second valves 501 are closed and the flange 6 is disassembled so that the U-shaped tube 7 is removed to clean the impurities in the U-shaped tube 7, the two connecting pipes 5 and the two ends of the U-shaped tube 7 are each provided with a flange 6, and bolts are connected between the corresponding two flanges 6, and the two flanges 6 can be disassembled by disassembling the bolts so that the U-shaped tube 7 is separated from the connecting pipe 5.

[0023] It also includes a U-shaped tube 7, both ends of the U-shaped tube 7 are connected to the bottom of the oil inlet 2, a filter screen 8 is installed inside one end of the U-shaped tube 7, the oil inlet 2 is connected to the oil inlet pipeline, and when the first valve 3 is opened, the hydraulic oil enters the oil inlet 2 and is filtered by the guide filter screen 4. Since the guide filter screen 4 is tilted in the oil inlet 2, impurities are brought into the U-shaped tube 7 from the oil inlet 2 by the hydraulic oil from the connecting pipe 5, and the filter screen 8 prevents the impurities from flowing out of the U-shaped tube 7 with the hydraulic oil and flowing back into the oil inlet 2, so that the pollutants are stored in the U-shaped tube 7. When cleaning is needed, the two second valves 501 are closed and the flange 6 is disassembled so that the U-shaped tube 7 can be removed for cleaning. The inside of the other end of the U-shaped tube 7 Two card slots are provided, and card blocks 10 are carded in both card slots. The two card blocks 10 are connected to the mounting rings 9 on one side thereof. A hopper 11 is installed at the bottom of the mounting ring 9. The hopper 11 is funnel-shaped, and impurities enter the U-shaped tube 7 from the wide mouth to the narrow mouth of the hopper 11. Since the hopper 11 is designed to be in the shape of a funnel, when the impurities enter the U-shaped tube 7 from the oil inlet 2 through the connecting tube 5, the impurities enter the U-shaped tube 7 from the wide mouth at the top of the hopper 11 and then the narrow mouth, which can prevent the impurities from flowing back. At the same time, when cleaning the U-shaped tube 7, the hopper 11 is taken out of the card slot through the card block 10, so that the hopper 11 is taken out of the U-shaped tube 7, and the inside of the U-shaped tube 7 can be conveniently cleaned.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electro-hydraulic servo drive device, characterized in that: include: A hydraulic driver (1), wherein an oil inlet (2) is provided at the top of the hydraulic driver (1), and a flow guide filter (4) is installed inside the oil inlet (2); It also comprises a U-shaped tube (7), the two ends of which are connected to the bottom of the oil inlet (2), a filter screen (8) is installed inside one end of the U-shaped tube (7), and two card slots are provided inside the other end of the U-shaped tube (7), and card blocks (10) are respectively connected in the two card slots, and a mounting ring (9) is connected to the corresponding side of the two card blocks (10), and a drop hopper (11) is installed at the bottom of the mounting ring (9).

2. An electro-hydraulic servo drive device according to claim 1, characterized in that: A first valve (3) is provided at the top of the oil inlet (2), and the first valve (3) is located between the two ends of the U-shaped tube (7).

3. An electro-hydraulic servo drive device according to claim 2, characterized in that: Two connecting pipes (5) are passed through the bottom of the oil inlet (2), and a second valve (501) is provided on each of the two connecting pipes (5).

4. The electro-hydraulic servo drive device according to claim 3, characterized in that: Both ends of the two connecting pipes (5) and the U-shaped pipe (7) are provided with flanges (6), and bolts are connected between the two corresponding flanges (6).

5. The electro-hydraulic servo drive device according to claim 1, characterized in that: The guide filter screen (4) is located at the top of the connecting pipe (5), and the filter screen (8) is located at the bottom of the connecting pipe (5).

6. The electro-hydraulic servo drive device according to claim 1, characterized in that: The drop hopper (11) is in the shape of a funnel.

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