Hydraulic oil tank cover assembly

Abstract

According to the technical scheme, the hydraulic oil tank cap assembly is characterized in that the hydraulic oil tank cap assembly comprises a cap body, and the bottom face of the cap body is connected with a cap core; the buffering part is arranged in the cover core and is used for buffering the pressure in the oil tank; the sealing part is arranged between the buffering component and the cover body and used for improving the sealing performance of the cover body, the sealing part can improve the sealing performance of the cover body when the buffering component buffers pressure, the buffering component can effectively buffer and adjust the pressure change, it is ensured that the internal pressure of the hydraulic oil tank is always within the safety range, and the service life of the hydraulic oil tank is prolonged. The sealing part can improve the sealing performance between the cover body and the oil tank, when the pressure of the hydraulic oil tank is increased, the sealing part can further improve the sealing performance between the cover body and the oil tank, and expanded gas is prevented from leaking out from the joint of the cover body and the oil tank; and the overall sealing performance of the hydraulic oil tank cover assembly is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil tank caps, and in particular to a hydraulic oil tank cap assembly. Background Art

[0002] The hydraulic oil tank cap assembly is an important component used in hydraulic systems. It is mainly used to seal the oil tank to prevent external contaminants from entering the hydraulic oil tank, and it also helps to regulate the pressure inside the oil tank.

[0003] For example, the Chinese patent with publication number CN102463889B proposes a nylon hydraulic oil tank cover and a manufacturing method thereof, wherein the assembly includes an outer cover, a plurality of gaskets and at least one filter screen, wherein the outer cover is made of nylon material and has a vent hole, a plurality of gaskets are bonded to the inner wall of the outer cover, and a filter screen is provided between two adjacent gaskets. The present invention also provides a method for manufacturing the nylon hydraulic oil tank cover, which includes: heating the nylon material to melt the nylon material; injecting the molten nylon material into a mold and cooling it to form; trimming the molded product and processing the vent hole to obtain the outer cover; bonding the gasket and the filter screen to the inner wall of the outer cover. The nylon hydraulic oil tank cover provided by the present invention will not be corroded because the outer cover material is made of nylon. The manufacturing method of the nylon hydraulic oil tank cover provided by the present invention can be completed by an injection mold, the process is simple and the cost is significantly reduced. However, in this scheme, during the process of increasing the internal pressure of the oil tank, the sealing gasket and the cover body will be moved upward under pressure, resulting in fluctuations in the overall sealing of the cover body and insufficient sealing performance. For this reason, we propose a hydraulic oil tank cover assembly. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a hydraulic oil tank cover assembly, which solves the problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: Hydraulic oil tank cover assembly, including: A cover body, wherein the bottom surface of the cover body is connected to a cover core; A buffer component disposed inside the cover core, used to buffer the pressure in the oil tank; The sealing part provided between the buffer component and the cover body is used to increase the sealing performance of the cover body. The sealing part can increase the sealing performance between the cover body when the buffer component buffers the pressure.

[0006] Preferably, the buffer component includes a buffer cavity opened inside the cover core, the interior of the buffer cavity is connected to a first air inlet pipe, the interior of the first air inlet pipe is opened with two first telescopic grooves, the interior of the first telescopic grooves is connected to a plurality of first springs, and one end of the first spring is connected to a first sealing block.

[0008] Preferably, the top surface of the cover body is connected to a second air inlet pipe, the interior of the second air inlet pipe is connected to a first filter. Preferably, the buffer component also includes an exhaust pipe connected to the bottom surface of the buffer cavity, two second telescopic grooves are opened inside the exhaust pipe, the interior of the second telescopic groove is connected to a second spring, and the second spring is connected to a second sealing block filter tube.

[0009] Preferably, a movable groove is provided between the cover body and the cover core, the interior of the movable groove is connected to a mounting sleeve, the interior of the mounting sleeve is provided with two third telescopic grooves, the interior of the third telescopic grooves is connected to two third springs, and one end of the third spring is connected to a slider.

[0010] Preferably, an adjustment groove is formed on the outer wall of the second air intake pipe, one end of the slider is connected to a connecting rod, one end of the connecting rod is fitted with the adjustment groove, one end of the connecting rod is connected to a third sealing block, and the third sealing block is inside the second air intake pipe.

[0011] Preferably, the interior of the second air inlet pipe is connected to a second filter tube.

[0012] Preferably, the sealing portion includes a sealing gasket arranged on the bottom surface of the cover body.

[0013] Preferably, the sealing portion also includes an air motor connected to the cover core, a screw is connected to the driving shaft of the air motor, a fixed groove is provided between the cover body and the cover core, a movable plate is rotatably connected to the screw, two through holes are provided on the top surface of the cover body, the through holes are communicated with the fixed groove, a pressure plate is connected to the bottom surface of the movable plate, the bottom surface of the pressure plate is connected to the top surface of the sealing gasket, a mounting plate is connected to the screw, a fourth spring is connected to one side of the mounting plate, a copper-based filter element is connected to the air inlet of the air motor, and a one-way valve is connected to the air outlet of the air motor.

[0014] In summary, the present invention mainly has the following beneficial effects: By setting a buffer component, when in use, the operator installs the cover body on the hydraulic oil tank. During operation, during the operation of the hydraulic oil tank, the gas in the tank temporal part expands due to heat, thereby increasing the internal pressure of the tank. The buffer component can effectively buffer and adjust this pressure change to ensure that the internal pressure of the hydraulic oil tank is always within a safe range to avoid damage to the tank due to excessive pressure. The buffer component can not only relieve the pressure, but also store the expanded gas separately to avoid direct discharge of oil and gas in the expanded gas, thereby preventing oil and gas from polluting the cover body and its surrounding environment. The set sealing part can increase the sealing between the cover body and the tank. At the same time, when the pressure in the hydraulic oil tank increases, the sealing part will further increase the sealing between the cover body and the tank to prevent the expanded gas from leaking out from the connection between the cover body and the tank, thereby improving the overall sealing performance of the hydraulic oil tank cover assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the cover structure of the present invention; Figure 3 It is a schematic diagram of the cover core structure of the present invention; Figure 4 It is a schematic diagram of the buffer cavity structure of the present invention; Figure 5 yes Figure 4 A is a partial enlarged schematic diagram; Figure 6 It is a schematic diagram of the cross-sectional structure of the cover body of the present invention; Figure 7 It is a schematic cross-sectional view of the installation sleeve of the present invention.

[0016] Figure numerals: 1. cover body; 2. cover core; 3. buffer chamber; 4. first air inlet pipe; 5. first telescopic groove; 6. first spring; 7. first sealing block; 8. exhaust pipe; 9. second telescopic groove; 10. second spring; 11. second sealing block; 12. second air inlet pipe; 13. first filter tube; 14. second filter tube; 15. movable groove; 16. mounting sleeve; 17. third telescopic groove; 18. third spring; 19. slider; 20. adjusting groove; 21. connecting rod; 22. third sealing block; 23. sealing gasket; 24. pneumatic motor; 25. screw; 26. fixed groove; 27. movable plate; 28. through hole; 29. ​​pressure plate; 30. mounting plate; 31. fourth spring; 32. copper-based filter element. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , hydraulic oil tank cover assembly, including: A cover body 1, the bottom surface of which is connected to a cover core 2; A buffer component disposed inside the cover core 2, used to buffer the pressure in the oil tank; The sealing portion provided between the buffer component and the cover body 1 is used to increase the sealing performance of the cover body 1 . The sealing portion can increase the sealing performance between the cover body 1 when the buffer component buffers the pressure.

[0019] By setting a buffer component, when in use, the operator installs the cover body 1 on the hydraulic oil tank. During operation, during the operation of the hydraulic oil tank, the gas in the tank temporal part expands due to heat, thereby increasing the internal pressure of the tank. The buffer component can effectively buffer and adjust this pressure change to ensure that the internal pressure of the hydraulic oil tank is always within a safe range to avoid damage to the tank due to excessive pressure. The buffer component can not only relieve the pressure, but also store the expanded gas separately to avoid direct discharge of oil and gas in the expanded gas, thereby preventing oil and gas from polluting the cover body 1 and its surrounding environment. The set sealing part can increase the sealing between the cover body 1 and the tank. At the same time, when the pressure in the hydraulic oil tank increases, the sealing part will further increase the sealing between the cover body 1 and the tank to prevent the expanded gas from leaking out from the connection between the cover body 1 and the tank, thereby improving the overall sealing performance of the hydraulic oil tank cover assembly.

[0020] As a further solution of the present invention, the buffer component includes a buffer cavity 3 opened inside the cover core 2, the buffer cavity 3 is connected to a first air inlet pipe 4, the first air inlet pipe 4 is opened inside two first telescopic grooves 5, the first telescopic grooves 5 are connected to a plurality of first springs 6, and one end of the first spring 6 is connected to a first sealing block 7; By setting the first air inlet pipe 4, when in use, when the internal gas in the hydraulic oil tank expands due to the increase in oil temperature during use, the gas pressure increases, and the expanded gas enters the first air inlet pipe 4. The expanded gas can automatically push the first sealing block 7 to move upward, open the channel, and allow the expanded gas to enter the buffer chamber 3 through the first air inlet pipe 4. By releasing the expanded gas to the buffer chamber 3 in time, the impact on the device caused by excessive pressure in the oil tank is reduced, ensuring that the hydraulic system can still maintain normal operation under high temperature working conditions, balancing the pressure in the hydraulic oil tank, and effectively avoiding damage to the oil tank due to excessive internal pressure, thereby achieving the purpose of buffering pressure.

[0021] As a further solution of the present invention, the buffer component further includes an exhaust pipe 8 connected to the bottom surface of the buffer cavity 3, two second telescopic grooves 9 are opened inside the exhaust pipe 8, a second spring 10 is connected inside the second telescopic groove 9, and a second sealing block 11 is connected to the second spring 10; By setting the exhaust pipe 8, when the oil temperature in the hydraulic oil tank drops, the internal pressure of the oil tank drops and negative pressure is generated. At this time, the second sealing block 11 moves downward due to the suction force of the negative pressure, and the exhaust pipe 8 is opened to suck the expanded gas in the buffer chamber 3 back into the hydraulic oil tank. After the gas in the buffer chamber 3 is cooled, the oil gas in the gas condenses into oil liquid, which flows back into the oil tank through the exhaust pipe 8, thereby realizing the recycling of the oil liquid and reducing the waste of the oil liquid. The second sealing block 11 moves downward under the action of negative pressure, so that the expanded gas in the buffer chamber 3 can be discharged back into the hydraulic oil tank, effectively alleviating the structural damage that may be caused by the negative pressure inside the oil tank, and ensuring the safe operation of the hydraulic system. The setting of the exhaust pipe 8 enables the device to automatically respond to the changes in the internal pressure of the oil tank, avoid excessive pressure fluctuations caused by temperature changes, ensure that the system always maintains appropriate pressure balance under different working conditions, and improve the stability of the device.

[0022] As a further solution of the present invention, the top surface of the cover body 1 is connected to a second air inlet pipe 12, and the interior of the second air inlet pipe 12 is connected to a first filter pipe 13; By setting up the second air intake pipe 12, when in use, the outside air enters the oil tank through the second air intake pipe 12, which can adjust and maintain the stability of the pressure when the air pressure inside the oil tank changes, prevent system imbalance or equipment damage caused by excessive internal and external pressure differences, maintain the stability of the pressure in the oil tank, and filter dust and moisture in the external air through the first filter tube 13 to prevent pollutants from entering the oil tank, thereby achieving the purpose of protecting the oil clean.

[0023] As a further solution of the present invention, a movable groove 15 is provided between the cover body 1 and the cover core 2, a mounting sleeve 16 is connected to the inside of the movable groove 15, two third telescopic grooves 17 are provided inside the mounting sleeve 16, two third springs 18 are connected to the inside of the third telescopic groove 17, one end of the third spring 18 is connected to a slider 19, an adjustment groove 20 is provided on the outer wall of the second air intake pipe 12, one end of the slider 19 is connected to a connecting rod 21, one end of the connecting rod 21 is fitted with the adjustment groove 20, one end of the connecting rod 21 is connected to a third sealing block 22, and the third sealing block 22 is inside the second air intake pipe 12; By setting the third sealing block 22, when the expanded gas is injected into the buffer chamber 3, the expanded gas pushes the slider 19 to move, and the movement of the slider 19 can drive the connecting rod 21 to move, and the upward movement of the connecting rod 21 can drive the third sealing block 22 to move. Specifically, when the expanded gas enters the buffer chamber 3, the movement of the slider 19 drives the connecting rod 21 and the third sealing block 22 to move upward, so that the third sealing block 22 blocks the second air inlet pipe 12, and prevents the expanded gas from being discharged from the second air inlet pipe 12, thereby preventing oil and gas from leaking onto the cover body 1. At the same time, the third sealing block 22 will automatically move when the gas expands. As the internal pressure of the oil tank changes, the third sealing block 22 can automatically adjust the sealing state without manual intervention, thereby improving the convenience of operation. In addition, the dynamic sealing function of the third sealing block 22 can effectively cope with pressure fluctuations in the hydraulic system, reduce system failures that may be caused by oil and gas leakage, and improve the overall reliability and service life of the hydraulic system.

[0024] As a further solution of the present invention, the interior of the second air intake pipe 12 is connected to a second filter pipe 14; By setting a second filter tube 14 in which an oil return filter is installed, when the gas in the oil tank expands and enters the second air intake pipe 12, the oil and gas in the expanded gas will be effectively filtered, and the second filter tube 14 can prevent the oil and gas from being discharged from the second air intake pipe 12, thereby avoiding waste and leakage of oil, and filtering the gas entering the second air intake pipe 12, thereby reducing the oil and gas overflow inside the oil tank, thereby keeping the hydraulic system clean, reducing the maintenance requirements of the equipment, and extending the service life of the equipment, while ensuring the cleanliness of the inner wall of the second air intake pipe 12 and the first filter tube 13, thereby improving practicality.

[0025] As a further solution of the present invention, the sealing portion includes a sealing gasket 23 arranged on the bottom surface of the cover body 1; By setting the sealing gasket 23, during installation, the operator installs the cover body 1 on the oil tank. The sealing gasket 23 is set on the bottom surface of the cover body 1 and fits tightly with the installation port of the oil tank, thereby significantly enhancing the sealing effect between the cover body 1 and the oil tank. The use of the sealing gasket 23 prevents the oil from flowing out from the connection between the cover body 1 and the oil tank during the operation of the hydraulic system, and prevents the oil from flowing out from the connection between the cover body 1 and the oil tank, thereby ensuring the safety of the device and the cleanliness of the working environment, and improving the practicability of the equipment.

[0026] As a further solution of the present invention, the sealing portion also includes an air motor 24 connected to the cover core 2, a screw 25 is connected to the driving shaft of the air motor 24, a fixing groove 26 is provided between the cover body 1 and the cover core 2, a movable plate 27 is rotatably connected to the screw 25, two through holes 28 are provided on the top surface of the cover body 1, the through holes 28 are connected to the fixing groove 26, a pressing plate 29 is connected to the bottom surface of the movable plate 27, the bottom surface of the pressing plate 29 is connected to the top surface of the sealing gasket 23, a mounting plate 30 is connected to the screw 25, a fourth spring 31 is connected to one side of the mounting plate 30, a copper-based filter element 32 is connected to the air inlet of the air motor 24, and a one-way valve is connected to the air outlet of the air motor 24; By setting the pneumatic motor 24, when the expansion gas enters the buffer chamber 3, the expansion gas will cause the pneumatic motor 24 drive shaft to rotate, and the rotation of the pneumatic motor 24 drive shaft can drive the screw 25 to rotate. After the screw 25 rotates, it will drive the movable plate 27 to move downward. When the movable plate 27 moves upward, it drives the pressure plate 29 to move downward, and the pressure plate 29 then applies downward pressure to the sealing gasket 23. Specifically, when the expansion gas enters the buffer chamber 3, the pressure plate 29 will move downward to apply pressure to the sealing gasket 23, thereby further improving the sealing performance of the cover body 1. This design ensures that when the pressure inside the hydraulic oil tank increases, the sealing effect of the sealing gasket 23 is enhanced, effectively preventing oil leakage. As the pressure in the oil tank changes, the pneumatic motor 24 can automatically adjust the position of the screw 25 and the movable plate 27. When the pressure in the oil tank decreases, the fourth spring 31 will release the stored potential energy, pushing the screw 25 to rotate in the opposite direction, thereby resetting the movable plate 27 and the pressure plate 29. This function ensures that the sealing device can flexibly respond to pressure changes and always maintain the best sealing state. The addition of the fourth spring 31 enables the box cover assembly to automatically reset after the pressure changes, ensuring the stability and reliability of the system. This design not only improves the sealing effect, but also reduces the need for manual adjustment, improves the automation level of the hydraulic system and facilitates operation. The air inlet of the pneumatic motor 24 is equipped with a copper-based filter element 32 to ensure that the gas entering the motor is clean and reduce the impact of impurities on the motor. At the same time, the one-way valve equipped at the outlet can effectively prevent reverse airflow and ensure the stable operation of the system.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Hydraulic oil tank cover assembly, characterized in that: include: A cover body (1), the bottom surface of the cover body (1) being connected to a cover core (2); A buffer component arranged inside the cover core (2) and used for buffering the pressure in the oil tank; The sealing portion provided between the buffer component and the cover body (1) is used to increase the sealing performance of the cover body (1); the sealing portion can increase the sealing performance between the cover body (1) when the buffer component buffers pressure.

2. The hydraulic oil tank cap assembly according to claim 1, characterized in that: The buffer component comprises a buffer cavity (3) opened inside the cover core (2), the interior of the buffer cavity (3) is connected to a first air inlet pipe (4), the interior of the first air inlet pipe (4) is opened with two first telescopic grooves (5), the interior of the first telescopic grooves (5) is connected to a plurality of first springs (6), and one end of the first spring (6) is connected to a first sealing block (7).

3. The hydraulic oil tank cap assembly according to claim 2, characterized in that: The buffer component also includes an exhaust pipe (8) connected to the bottom surface of the buffer cavity (3), two second telescopic grooves (9) are opened inside the exhaust pipe (8), a second spring (10) is connected inside the second telescopic groove (9), and the second spring (10) is connected to a second sealing block (11).

4. The hydraulic oil tank cap assembly according to claim 1, characterized in that: The top surface of the cover body (1) is connected to a second air inlet pipe (12), and the interior of the second air inlet pipe (12) is connected to a first filter pipe (13).

5. The hydraulic oil tank cap assembly according to claim 4, characterized in that: A movable groove (15) is provided between the cover body (1) and the cover core (2); a mounting sleeve (16) is connected to the interior of the movable groove (15); two third telescopic grooves (17) are provided to the interior of the mounting sleeve (16); two third springs (18) are connected to the interior of the third telescopic grooves (17); one end of the third spring (18) is connected to a slider (19).

6. The hydraulic oil tank cap assembly according to claim 5, characterized in that: An adjustment groove (20) is provided on the outer wall of the second air intake pipe (12); one end of the slider (19) is connected to a connecting rod (21); one end of the connecting rod (21) is in contact with the adjustment groove (20); one end of the connecting rod (21) is connected to a third sealing block (22); and the third sealing block (22) is inside the second air intake pipe (12).

7. The hydraulic oil tank cap assembly according to claim 4, characterized in that: The interior of the second air inlet pipe (12) is connected to a second filter pipe (14).

8. The hydraulic oil tank cap assembly according to claim 1, characterized in that: The sealing portion comprises a sealing gasket (23) arranged on the bottom surface of the cover body (1).

9. The hydraulic oil tank cap assembly according to claim 8, characterized in that: The sealing portion further comprises an air motor (24) connected to the cover core (2), a screw (25) being connected to the driving shaft of the air motor (24), a fixing groove (26) being provided between the cover body (1) and the cover core (2), a movable plate (27) being rotatably connected to the screw (25), two through holes (28) being provided on the top surface of the cover body (1), the through holes (28) being communicated with the fixing groove (26), a pressure plate (29) being connected to the bottom surface of the movable plate (27), the bottom surface of the pressure plate (29) being connected to the top surface of the sealing gasket (23), a mounting plate (30) being connected to the screw (25), a fourth spring (31) being connected to one side of the mounting plate (30), a copper-based filter element (32) being connected to the air inlet of the air motor (24), and a one-way valve being connected to the air outlet of the air motor (24).

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