A fully enclosed oil tank for an integrated hydraulic gate hoist

By setting limiting and moving structures in a fully enclosed oil tank, the oil tank pressure is regulated and oil evaporation is prevented, thus solving the problems of pressure accumulation and oil evaporation in the sealed state of the oil tank, achieving oil quality stability and reducing usage costs.

CN224515503UActive Publication Date: 2026-07-17CHANGZHOU LIAN HYDRAULIC EQUIP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU LIAN HYDRAULIC EQUIP
Filing Date
2025-08-18
Publication Date
2026-07-17

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  • Figure CN224515503U_ABST
    Figure CN224515503U_ABST
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Abstract

This utility model discloses a fully enclosed oil tank for an integrated hydraulic gate hoist, comprising an oil tank body with a drain port on its left end and an oil suction port connected to the upper right side of the tank body; an oil filler port installed on the upper left side of the tank body, with a return port connected to the lower right side of the tank body; a limit structure connected to the upper side of the oil filler port, the limit structure including an oil tank cover, a sealing ring, and a fixing rod; and an oil level sensor located on the inner right side of the oil tank body, with a connecting cylinder connected to the upper right side of the tank body. A movable structure is connected inside the connecting cylinder, the movable structure including an electric telescopic rod, a moving disc, and a cleaning plate. This fully enclosed oil tank for an integrated hydraulic gate hoist, with its limit structure, can limit the oil tank cover to prevent oil evaporation, and its movable structure can move the piston plate to adjust the pressure inside the oil tank.
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Description

Technical Field

[0001] This utility model relates to the field of integrated hydraulic gate hoisting technology, specifically to a fully enclosed oil tank for an integrated hydraulic gate hoisting machine. Background Technology

[0002] A fully enclosed oil tank refers to a sealed oil tank filled with inert gas at a certain pressure, typically reaching 0.05 MPa, to minimize the presence of air, moisture, and impurities within the tank. This type of tank is commonly found in special applications, such as large trucks or construction machinery. An integrated hydraulic gate hoist integrates the hydraulic system, hydraulic cylinder, oil pump, electric motor, oil tank, filter, and hydraulic control valves into a single structure. This design makes the hoist compact, easy to install and maintain, and improves work efficiency and reliability. In the use of an integrated hydraulic gate hoist, a fully enclosed oil tank is required to supply oil to the hydraulic system.

[0003] Based on existing solutions and actual production and processing applications, the fully enclosed oil tanks used in current integrated hydraulic gate hoists still have some problems, such as: Fully enclosed fuel tanks are in a sealed state during use, and the pressure inside the tank will continue to accumulate, causing the pressure in the fuel rail to rise, which may affect the stability of the fuel quality and the normal operation of the fuel system. Since fully enclosed oil tanks use an inlet pipe for refueling, the use of an oil tank cap will cause the oil to evaporate continuously, increasing the refueling frequency and travel costs. Therefore, this utility model provides a fully enclosed oil tank for an integrated hydraulic gate hoist to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a fully enclosed oil tank for an integrated hydraulic gate hoist, in order to solve the problems mentioned in the background art, where the fully enclosed oil tank is in a sealed state during use, and the pressure inside the oil tank will continue to accumulate, causing the pressure in the oil rail to rise, which may affect the stability of the oil quality and the normal operation of the fuel system. Since the fully enclosed oil tank uses an oil inlet pipe for refueling, the use of the oil tank cap will cause the oil to evaporate continuously, increasing the refueling frequency and travel costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fully enclosed oil tank for an integrated hydraulic gate opener, comprising an oil tank body, an oil drain port installed at the left end of the tank body, and an oil suction port connected to the upper right end of the oil tank body. Also includes: The filler neck is installed on the upper left side of the fuel tank body, and the lower right side of the fuel tank body is connected to the return port. The upper side of the filler neck is connected to a limiting structure, which includes a fuel tank cover, a sealing ring and a fixing rod. The fuel tank cover is installed on the upper side of the filler neck, and the lower inner side of the fuel tank cover is connected to a sealing ring, and the lower outer side of the fuel tank cover is connected to a fixing rod. An oil level sensor is located inside the right side of the oil tank body, and a connecting cylinder is connected to the upper right side of the oil tank body. A movable structure is connected inside the connecting cylinder, and the movable structure includes an electric telescopic rod, a movable disc, and a cleaning plate. The electric telescopic rod is located inside the connecting cylinder, and a movable disc is installed on the lower side of the electric telescopic rod, and a cleaning plate is connected to the lower side of the movable disc.

[0006] Preferably, a mounting moving block is also fixedly installed on the lower outer side of the oil tank body, and a connecting damper is fixedly installed on the lower side of the mounting moving block. A mounting base plate is fixedly installed on the lower side of the connecting damper, and a connecting spring is fixedly installed inside the mounting base plate. A fixed mounting block is fixedly installed on the upper end of the mounting base plate, and a limit mounting rod is movably connected to the outer side of the mounting base plate.

[0007] Preferably, the movable mounting block and the fixed mounting block are connected by a telescopic sliding connection, and the vertical cross-sectional shape of the movable mounting block is a "T" shaped structure.

[0008] Preferably, the movable disk and the connecting cylinder are fitted together.

[0009] Preferably, the filler neck and the sealing ring are interlocked and provide a seal between the filler neck and the fuel tank cap.

[0010] Preferably, the fuel tank cap and the fuel filler neck are connected by a snap-fit ​​connection, and the fuel tank cap and the fixing rod are connected by a threaded connection.

[0011] Preferably, the limiting mounting rod is threadedly connected to the mounting base plate and serves to limit the movement of the oil tank body.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the integrated hydraulic gate opener uses a fully enclosed oil tank with a limiting structure that can limit the oil tank cover to prevent oil evaporation, and has a moving structure that can move the piston plate to adjust the pressure inside the oil tank. When the tank body is vibrated, it causes the mounting block to slide downwards. This causes the mounting block to compress the connecting damper and the connecting spring. The elasticity of the connecting damper keeps the mounting block rising, thus counteracting the downward potential energy of the mounting block and effectively mitigating the vibration experienced by the tank body. Rotating the limiting mounting rod allows it to be threaded onto the outside of the mounting base plate, thus allowing it to be threaded onto the inside of the mounting base plate in a suitable position for easy limiting of the mounting base plate. By snapping the fuel tank cap onto the outside of the filler neck, the fuel tank cap drives the sealing ring to snap onto the upper side of the filler neck. Rotating the fixing rod causes the fixing rod to be threaded onto the lower outer side of the fuel tank cap, thereby moving the fixing rod inward and causing it to be threaded onto the outside of the filler neck. This facilitates limiting the fuel tank cap and thus facilitates sealing between the filler neck and the fuel tank cap. By activating the electric telescopic rod, the electric telescopic rod drives the moving disc to slide downward inside the connecting cylinder. By moving inside the connecting cylinder, the electric telescopic rod changes the internal volume of the oil tank body according to the compression or expansion of the fluid, thereby adjusting the internal pressure of the oil tank body. This facilitates the adjustment of the internal pressure of the oil tank body. Furthermore, the cleaning plate fixedly installed on the lower side of the moving disc can clean the oil stains adhering to the inside of the connecting cylinder during the movement of the moving disc. Attached Figure Description

[0013] Figure 1 This is a schematic cross-sectional view of the connection between the fuel tank body and the drain port of this utility model. Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This utility model Figure 1 Enlarged structural diagram at point B; Figure 4 This is a schematic cross-sectional view of the connection between the fuel tank body and the mounting movable block of this utility model. Figure 5 This is a schematic diagram of the overall structure of the connection between the movable disk and the cleaning plate of this utility model.

[0014] In the diagram: 1. Fuel tank body; 2. Drain port; 3. Suction port; 4. Return port; 5. Mounting moving block; 6. Mounting base plate; 7. Oil level sensor; 8. Connecting cylinder; 9. Electric telescopic rod; 10. Moving disc; 11. Cleaning plate; 12. Fixed mounting block; 13. Connecting damper; 14. Connecting spring; 15. Filler port; 16. Fuel tank cap; 17. Sealing ring; 18. Fixing rod; 19. Limiting mounting rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution: a fully enclosed oil tank for an integrated hydraulic gate hoist, comprising: an oil tank body 1, an oil drain port 2, an oil suction port 3, an oil return port 4, a mounting moving block 5, a mounting base plate 6, an oil level sensor 7, a connecting cylinder 8, an electric telescopic rod 9, a moving disc 10, a cleaning plate 11, a fixed mounting block 12, a connecting damper 13, a connecting spring 14, an oil filler 15, an oil tank cover 16, a sealing ring 17, a fixing rod 18, and a limiting mounting rod 19. In operation, the specific details are as follows... Figure 1 , Figure 2 and Figure 4 As shown, a mounting block 5 is fixedly installed at the lower end of the fuel tank body 1. A connecting damper 13 is fixedly installed on the lower side of the mounting block 5. A mounting base plate 6 is fixedly installed at the lower end of the connecting damper 13. A fixed mounting block 12 is installed on the upper side of the mounting base plate 6. A connecting spring 14 is installed inside the mounting base plate 6. A limiting mounting rod 19 is connected to the outer side of the mounting base plate 6. When the mounting base plate 6 is placed in a suitable position, the limiting mounting rod 19 is screwed on, so that the limiting mounting rod 19 is threaded on the outer side of the mounting base plate 6, thereby making the limiting mounting rod 19 in a suitable position. The internal threaded connection limits the mounting base plate 6. When the tank body 1 is vibrated, the tank body 1 causes the mounting moving block 5 to slide downward inside the fixed mounting block 12. This causes the mounting moving block 5 to compress the connecting damper 13, which in turn compresses the connecting spring 14. At this time, the connecting damper 13 uses its elastic properties to keep the mounting moving block 5 rising, thus counteracting the downward potential energy of the mounting moving block 5 and effectively mitigating the vibration experienced by the tank body 1. Specific examples Figure 1 and Figure 3As shown, a filler neck 15 is fixedly installed on the upper left side of the fuel tank body 1. A fuel tank cap 16 is movably installed on the upper side of the filler neck 15. A sealing ring 17 is fixedly installed on the lower middle side of the fuel tank cap 16. A fixing rod 18 is movably installed on the lower outer side of the fuel tank cap 16. By rotating the fixing rod 18, the fixing rod 18 is threadedly connected to the lower outer side of the fuel tank cap 16, thereby separating the fixing rod 18 from the outside of the filler neck 15. This, in turn, separates the fuel tank cap 16 from the upper side of the filler neck 15, allowing fuel to flow into the interior of the fuel tank body 1 through the filler neck 15. After supplying fuel, manually install the fuel tank cap 16 on the outside of the fuel filler neck 15, so that the fuel tank cap 16 drives the sealing ring 17 to engage on the upper side of the fuel filler neck 15. Rotate the fixing rod 18 so that the fixing rod 18 is threaded on the lower outer side of the fuel tank cap 16. Under the action of the thread between the fixing rod 18 and the fuel tank cap 16, the fixing rod 18 moves inward, thereby making the fixing rod 18 threaded on the outside of the fuel filler neck 15, which facilitates the fixing of the fuel tank cap 16 and can seal the fuel filler neck 15 and the fuel tank cap 16. Specific examples Figure 1 , Figure 4 and Figure 5 As shown, the oil in the lower left side of the oil tank body 1 is fixedly installed with an oil drain port 2, the upper right side of the oil tank body 1 is fixedly installed with an oil suction port 3, and the lower right side of the oil tank body 1 is fixedly installed with an oil return port 4. The oil in the lower right side of the oil tank body 1 is output through the oil suction port 3 and transported through the pipeline to the hydraulic gate hoist for the operation of the hydraulic gate hoist. The oil used flows into the interior of the oil tank body 1 through the oil return port 4, and then passes through the oil level sensor 7 set on the upper side of the interior of the oil tank body 1, the connecting cylinder 8 fixedly installed on the upper right side of the oil tank body 1, the electric telescopic rod 9 set on the upper side of the interior of the connecting cylinder 8, the moving plate 10 fixedly installed on the lower side of the electric telescopic rod 9, and the lower part of the moving plate 10... The cleaning plate 11 installed on the side detects a drop in the oil level inside the oil tank body 1 via the oil level sensor 7, which causes the controller to activate the electric telescopic rod 9. Driven by the electric telescopic rod 9, the electric telescopic rod 9 moves the moving disc 10 downward inside the connecting cylinder 8. By moving inside the connecting cylinder 8, the electric telescopic rod 9 changes the internal volume of the oil tank body 1 according to the compression or expansion of the fluid, thereby regulating the pressure inside the oil tank body 1. This ensures that the pressure inside the oil tank body 1 is always within the moving range. Furthermore, the cleaning plate 11, which is fixedly installed on the lower side of the moving disc 10, can clean the oil stains adhering to the inside of the connecting cylinder 8 during the movement.

[0017] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0018] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully enclosed oil tank for an integrated hydraulic gate hoist, comprising an oil tank body (1), an oil drain port (2) installed at the left end of the oil tank body (1), and an oil suction port (3) connected to the upper right end of the oil tank body (1). characterized in that Also includes: The filler port (15) is installed on the upper left side of the fuel tank body (1), and the lower right side of the fuel tank body (1) is connected to the return port (4). The upper side of the filler port (15) is connected to a limiting structure, which includes a fuel tank cover (16), a sealing ring (17) and a fixing rod (18). The fuel tank cover (16) is installed on the upper side of the filler port (15), and the lower inner side of the fuel tank cover (16) is connected to the sealing ring (17), and the lower outer side of the fuel tank cover (16) is connected to the fixing rod (18). An oil level sensor (7) is located inside the right side of the oil tank body (1), and a connecting cylinder (8) is connected to the upper right side of the oil tank body (1). A movable structure is connected inside the connecting cylinder (8), and the movable structure includes an electric telescopic rod (9), a movable disc (10), and a cleaning plate (11). The electric telescopic rod (9) is located inside the connecting cylinder (8), and a movable disc (10) is installed on the lower side of the electric telescopic rod (9), and a cleaning plate (11) is connected to the lower side of the movable disc (10).

2. The fully-enclosed oil tank for an integrated hydraulic hoist according to claim 1, characterized in that: The lower outer side of the oil tank body (1) is also fixedly installed with a moving block (5), and a connecting damper (13) is fixedly installed on the lower side of the moving block (5). A mounting base plate (6) is fixedly installed on the lower side of the connecting damper (13), and a connecting spring (14) is fixedly installed inside the mounting base plate (6). A fixed mounting block (12) is fixedly installed on the upper end of the mounting base plate (6), and a limit mounting rod (19) is movably connected to the outer side of the mounting base plate (6).

3. The fully-enclosed oil tank for an integrated hydraulic hoist according to claim 2, characterized in that: The installation movable block (5) and the fixed installation block (12) are connected by a telescopic sliding connection, and the vertical cross-section of the installation movable block (5) is a "T" shaped structure.

4. The fully-enclosed oil tank for an integrated hydraulic hoist according to claim 1, characterized in that: The movable disk (10) and the connecting cylinder (8) are connected in a close fit.

5. The fully-enclosed oil tank for an integrated hydraulic hoist according to claim 1, characterized in that: The filler port (15) and the sealing ring (17) are connected by a snap-fit ​​and provide a seal between the filler port (15) and the fuel tank cap (16).

6. The fully-enclosed oil tank for an integrated hydraulic hoist according to claim 5, characterized in that: The fuel tank cap (16) and the fuel filler port (15) are connected by a snap-fit ​​connection, and the fuel tank cap (16) and the fixing rod (18) are connected by a thread.

7. The fully-enclosed oil tank for an integrated hydraulic hoist according to claim 2, characterized in that: The limiting mounting rod (19) is threadedly connected to the mounting base plate (6) and serves to limit the oil tank body (1).