A bulldozer hydraulic oil tank with built-in filtering cavity and integrated monitoring interface

Abstract

The utility model discloses a bulldozer hydraulic oil tank with built-in filtering cavity and integrated monitoring interface, which comprises a box body, a filtering cavity is arranged inside the box body, the filtering cavity is a cylindrical cavity with a filter element arranged inside, an upper end of the filtering cavity is fixed to an inner side of a top of the box body, a lower end of the filtering cavity is provided with a circular bottom plate, and an opening is arranged in a middle of the circular bottom plate; an oil return hard pipe is arranged inside the box body, one end of the oil return hard pipe is communicated with a side wall of the filtering cavity, and the other end of the oil return hard pipe is communicated with an oil port seat on a wall surface of the box body; the oil port seat is provided with an oil port and a sensor mounting interface, and a pressure sensor is mounted on the sensor mounting interface. The utility model has the advantages of simple structure, low cost, effective alarm at a critical point of filter element failure, and simplified maintenance process.

Description

Technical Field

[0001] This utility model relates to the field of bulldozers, and in particular to a bulldozer hydraulic oil tank with a built-in filter chamber and an integrated monitoring interface. Background Technology

[0002] A bulldozer is a piece of equipment used for bulldozing and leveling soil. It has wide applications in various engineering construction fields and is considered a pre-construction work equipment. Bulldozers typically operate in extremely harsh environments, constantly exposed to high dust and strong vibrations. When performing high-intensity operations such as bulldozing and transporting soil, the hydraulic components (such as pumps, valves, and cylinders) inevitably generate metal shavings. Simultaneously, external dust and moisture may also enter the system. If these contaminants circulate in the hydraulic oil, they will drastically accelerate the wear of hydraulic components, leading to system malfunction or even failure. Therefore, a filter needs to be added to the hydraulic circuit to remove contaminants and ensure oil cleanliness. During continuous operation of the hydraulic system, the return oil filter element will continuously trap and accumulate these contaminants, causing the flow resistance of the oil through the filter element to gradually increase, meaning the filter element will inevitably become clogged. When the clog is severe, the filter element's bypass valve will open to ensure unobstructed oil flow. However, unfiltered oil will then directly enter the hydraulic system, causing damage. Therefore, when the filter element is severely clogged, it needs to be replaced. However, traditional maintenance methods rely on fixed replacement cycles, which can lead to over-maintenance or untimely maintenance.

[0003] Existing technologies, such as the patented bulldozer hydraulic oil tank with differential pressure alarm (CN211550155U), attempt to achieve filter element blockage alarm through an external, complex valve block and differential pressure sensor. However, this solution has a complex structure, high manufacturing cost, and does not simplify the core maintenance process of filter element replacement.

[0004] Therefore, it is necessary to develop a new type of hydraulic oil tank for bulldozers to overcome the above problems. Summary of the Invention

[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a bulldozer hydraulic oil tank with a built-in filter chamber and integrated monitoring interface. It has a simple structure, low cost, can effectively provide alarm at the critical point of filter element failure, and can simplify the maintenance process.

[0006] Technical Solution: This utility model discloses a bulldozer hydraulic oil tank with a built-in filter chamber and integrated monitoring interface, characterized in that: it includes a tank body, inside which is a filter chamber, which is a cylindrical cavity with a filter element inside. The upper opening of the filter chamber is fixed to the inner side of the top of the tank body, and the lower end of the filter chamber is provided with a circular bottom plate with an opening in the middle. The tank body is provided with a return oil hard pipe, one end of which is connected to the side wall of the filter chamber, and the other end of which is connected to an oil port seat on the tank body wall. The oil port seat is provided with an oil port and a sensor mounting interface, on which a pressure sensor is installed.

[0007] The upper end of the filter chamber is connected to the inner side of the top of the box body through a welded structure.

[0008] The lower end of the filter chamber is connected to the circular base plate via a welded structure.

[0009] One end of the return oil hard pipe is connected to the side wall of the filter chamber via a welded structure.

[0010] The other end of the return oil hard pipe is connected to the oil port seat through a welded structure.

[0011] The filter element has a cylindrical structure, with its lower end located on a circular base plate and the cavity in the middle of the filter element facing the opening of the circular base plate.

[0012] The filter element is sealed at the top and equipped with a bypass valve. The filter element is compressed by a compression spring arranged at its top. The compression spring is sealed in the filter chamber by a flange cover.

[0013] Beneficial Effects: Compared with existing technologies, this utility model has the following significant advantages: Through a simple structure, this utility model provides a clear alarm to the operator when the return oil filter element is completely clogged and the bypass valve is about to open, thereby preventing dirty oil from entering the system and protecting the hydraulic system's safety. Simultaneously, the structural design of this utility model aims to achieve quick and convenient filter element replacement, reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure One ;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention. Figure Two ;

[0016] In the diagram, 1 is the filter element; 2 is the circular base plate; 3 is the filter chamber; 4 is the return oil hard pipe; and 5 is the oil port seat. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] This utility model discloses a bulldozer hydraulic oil tank with a built-in filter chamber and integrated monitoring interface. The tank includes a housing with a filter chamber 3 inside. The filter chamber 3 is a cylindrical cavity containing a filter element 1. The upper opening of the filter chamber 3 is fixed to the inner side of the top of the housing, and the lower end of the filter chamber 3 is provided with a circular base plate 2 with an opening in the middle. A return oil pipe 4 is provided inside the housing. One end of the return oil pipe 4 is connected to the side wall of the filter chamber 3, and the other end is connected to an oil port seat 5 on the housing wall. The oil port seat 5 has an interface for mounting an oil port and a sensor, on which a pressure sensor is installed. The alarm threshold of this sensor is set to be equal to the opening pressure of the bypass valve of the return oil filter element. When the filter element 1 becomes clogged, causing the pressure in the filter chamber 3 and the return oil pipe 4 to rise to this set value, the sensor is triggered, outputting a switch signal. This signal is transmitted to the bulldozer's display instrument, illuminating the corresponding alarm icon and prompting the operator to immediately replace the filter element 1.

[0019] The upper end of the filter chamber 3 of this invention is connected to the inner side of the top of the housing via a welded structure. The lower end of the filter chamber 3 is connected to the circular base plate 2 via a welded structure. One end of the oil return pipe 4 is connected to the side wall of the filter chamber 3 via a welded structure. The other end of the oil return pipe 4 is connected to the oil port seat 5 via a welded structure.

[0020] The filter element 1 of this utility model has a cylindrical structure. The lower end of the filter element 1 is located on the circular base plate 2, and the cavity in the middle of the filter element 1 is directly opposite the opening of the circular base plate 2. The upper end of the filter element 1 is sealed and equipped with a bypass valve. The filter element 1 is compressed by a compression spring arranged at its upper end, and the upper part of the compression spring is sealed in the filter chamber 3 by a flange cover.

[0021] When the bulldozer is working, the hydraulic oil enters the filter chamber 3 through the oil port seat 5 and the rigid pipe. Under pressure, it passes through the wall of the cylindrical filter element 1 from the outer box. The filtered clean oil enters the cavity inside the filter element 1, and then flows downward and into the hydraulic oil tank through the central opening of the bottom plate of the filter chamber.

[0022] This utility model has the following features: 1. Safety protection: This utility model can provide a clear alarm when the filter element is completely blocked or the bypass valve is about to open, effectively protecting expensive hydraulic components. 2. Simple structure and low cost: It eliminates all external valve blocks and complex internal oil passages, achieving the alarm function only through a standard interface integrated on the oil port seat and a single-point pressure sensor, significantly reducing system costs and increasing reliability. 3. Extremely convenient filter element replacement: Maintenance personnel only need to open the flange cover on the top of the oil tank to directly remove and replace the filter element, eliminating the need to disassemble any external pipelines, avoiding oil leakage and secondary pollution, improving maintenance efficiency, and making it suitable for on-site operations. 4. High reliability: The return oil hard pipe and the oil port seat form a rigid welded connection, with a robust structure and good vibration resistance, fundamentally reducing the multiple potential leakage points of traditional external filter element solutions.

Claims

1. A bulldozer hydraulic oil tank with a built-in filter chamber and integrated monitoring interface, characterized in that: The device includes a housing, inside which is a filter chamber (3), which is a cylindrical cavity with a filter element (1) inside. The upper opening of the filter chamber (3) is fixed to the inner side of the top of the housing, and the lower end of the filter chamber (3) is provided with a circular bottom plate (2) with an opening in the middle. Inside the housing, there is a return oil hard pipe (4), one end of which is connected to the side wall of the filter chamber (3), and the other end of which is connected to the oil port seat (5) on the wall of the housing. The oil port seat (5) is provided with an oil port and a sensor mounting interface, and a pressure sensor is installed on the sensor mounting interface.

2. The bulldozer hydraulic oil tank with built-in filter chamber and integrated monitoring interface according to claim 1, characterized in that: The upper end of the filter chamber (3) is connected to the inner side of the top of the box body through a welding structure.

3. The bulldozer hydraulic oil tank with built-in filter chamber and integrated monitoring interface according to claim 1, characterized in that: The lower end of the filter chamber (3) is connected to the circular base plate (2) by a welding structure.

4. The bulldozer hydraulic oil tank with built-in filter chamber and integrated monitoring interface according to claim 1, characterized in that: One end of the return oil hard pipe (4) is connected to the side wall of the filter chamber (3) through a welded structure.

5. The bulldozer hydraulic oil tank with built-in filter chamber and integrated monitoring interface according to claim 4, characterized in that: The other end of the return oil hard pipe (4) is connected to the oil port seat (5) through a welded structure.

6. The bulldozer hydraulic oil tank with built-in filter chamber and integrated monitoring interface according to claim 1, characterized in that: The filter element (1) is a cylindrical structure. The lower end of the filter element (1) is located on the circular base plate (2), and the cavity in the middle of the filter element (1) is directly opposite the opening of the circular base plate (2).

7. The bulldozer hydraulic oil tank with built-in filter chamber and integrated monitoring interface according to claim 6, characterized in that: The filter element (1) is sealed at the top and equipped with a bypass valve. The filter element (1) is compressed by a compression spring arranged at its top. The compression spring is sealed in the filter chamber (3) by a flange cover.

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