Hydraulic station

Abstract

The utility model discloses a hydraulic station, relates to the technical field of test equipment, and solves the technical problem of how to prevent external water from entering an oil tank in the prior art. The device is characterized by comprising a box body, an upper cover, a pump motor group, a heat exchanger, a valve group and a sealing strip, the periphery of the upper end face of the box body is provided with a closed rectangular groove and a screw hole, the screw hole is located in the outer side of the rectangular groove, and the sealing strip is embedded in the rectangular groove. The upper cover is fixedly connected with the box body through screws, and the sealing strip is located between the upper cover and the box body. The pump motor set, the heat exchanger and the valve set are fixedly connected with the upper cover, and an oil return opening of the valve set is communicated with the heat exchanger through a pipeline. The hydraulic oil cannot be polluted and deteriorated by water.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, in particular to a hydraulic station. Background Art

[0002] The hydraulic station is also called a hydraulic pump station. The motor drives the oil pump to rotate. The pump draws oil from the oil tank and then pumps it, converting mechanical energy into the pressure energy of the hydraulic oil. The hydraulic oil is adjusted in direction, pressure and flow by the hydraulic valve through the integrated block (or valve combination) and then transmitted to the oil cylinder or oil motor of the hydraulic machinery through the external pipeline, thereby controlling the change of direction, force and speed of the hydraulic motor and driving various hydraulic machines to do work.

[0003] The hydraulic station is a conventional mechanical component that has been used in China for many years and has a variety of specifications and models. At the same time, targeted improvements have been made for different working conditions, making it relatively complete. In order to achieve a compact structure, many manufacturers install the heat exchanger above the oil tank. There is no problem with installing an air-cooled heat exchanger above the oil tank, but when a water-cooled heat exchanger is installed above the oil tank, once there is water leakage, water will enter the oil tank through the gap, causing the hydraulic oil to deteriorate. In order not to affect the hydraulic components, the hydraulic oil is generally replaced, which affects normal use and causes waste.

[0004] To address this situation, most manufacturers generally lay a layer of rubber between the box body and the box cover to prevent external water from entering the interior of the fuel tank. The rubber is soft, and in order to save costs, most of the time the rubber is cut manually and then installed. When the box cover is directly installed to the box body with screws, the rubber will be squeezed elsewhere, which requires a high level of installation workers, and the effect is generally not ideal; through holes are punched in the rubber, and the screws are installed through the box cover, rubber and box body in turn. Due to the extrusion effect, the rubber will have wrinkles, or the package is not tight, and oil mist will leak from the fuel tank, affecting the appearance, and the overall effect is still not good. Utility Model Content

[0005] The utility model aims to solve the technical problem of how to prevent external water from entering the interior of an oil tank in the prior art, and provides a hydraulic station.

[0006] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0007] A hydraulic station, comprising: a box body, an upper cover, a pump motor unit, a heat exchanger, a valve unit and a sealing strip;

[0008] The upper end surface of the box body is surrounded by a rectangular groove and screw holes, the screw holes are located outside the rectangular groove, and the sealing strip is embedded in the rectangular groove;

[0009] The upper cover is fixedly connected to the box body by screws, and the sealing strip is located between the upper cover and the box body;

[0010] The pump motor unit, the heat exchanger and the valve unit are fixedly connected to the upper cover respectively, and the oil return port of the valve unit is communicated with the heat exchanger through a pipeline.

[0011] Furthermore, the upper cover includes a main board and a welding plate, the welding plate is welded on top of the main board, and the welding plates are fixedly connected to the pump motor unit, the heat exchanger and the valve group respectively.

[0012] Furthermore, a ball valve is installed at the water inlet of the heat exchanger.

[0013] Furthermore, the valve group also includes a one-way valve and a solenoid valve. The one-way valve is installed at the inlet of the valve group and is connected to the pump motor group through a pipeline; the pressure port of the solenoid valve is connected to the pressure port of the valve group, and the return oil port of the solenoid valve is connected to the return oil port of the valve group.

[0014] Furthermore, a base is provided below the box body, an oil receiving pan is welded above the base, and the oil receiving pan is fixedly connected to the box body.

[0015] The utility model has the following beneficial effects:

[0016] The disclosed hydraulic station has a sealing strip embedded in a rectangular groove, which is easy to install, requires low technical skills of workers, and saves installation time. When installing the upper cover, the sealing strip will not be squeezed out or deviated, ensuring that the oil tank is installed tightly while maintaining the overall appearance. At the same time, the screw holes are located outside the rectangular groove. In this way, even if there is water on the upper cover, it can only leak through the screw holes and will not enter the interior of the oil tank, ensuring that the hydraulic oil will not be contaminated or deteriorated by water.

[0017] The welding plate is welded to the top of the main board. The welding plate is fixedly connected to the pump motor unit, heat exchanger and valve group respectively. There is a height difference between the welding plate and the main board. Once there is a water leak at the heat exchanger, the water will flow to the top of the main board. In this way, the water will at most flow out through the screw holes on the main board and will not flow into the interior of the box, ensuring that the hydraulic oil will not be contaminated;

[0018] The pressure port of the solenoid valve is connected to the pressure port of the valve group, and the oil return port of the solenoid valve is connected to the oil return port of the valve group. The solenoid valve can control the pressure of the external actuating component. By switching the direction of the solenoid valve, the residual pressure of the external actuating component can be quickly unloaded to ensure the safety of the external actuating component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1 This is a main view of a hydraulic station of the utility model;

[0021] Figure 2It is an AA sectional view of the main view of a hydraulic station of the present invention;

[0022] Figure 3 It is a partial enlarged view of the AA cross-sectional view of a hydraulic station of the present utility model;

[0023] Figure 4 This is a structural schematic diagram of an upper cover of a hydraulic station of the present utility model;

[0024] Figure 5 This is a schematic diagram of the top structure of a hydraulic station box of the present invention;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of a hydraulic station of the present utility model.

[0026] The reference numerals in the figures indicate:

[0027] 1. Box body; 101. Rectangular groove; 102. Screw hole; 2. Upper cover; 201. Main board; 202. Welding plate; 3. Pump motor unit; 4. Heat exchanger; 401. Ball valve; 5. Valve group; 501. Check valve; 502. Solenoid valve; 6. Sealing strip; 7. Base; 8. Oil pan. DETAILED DESCRIPTION

[0028] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1-6 , a hydraulic station, characterized in that it includes: a box body 1, an upper cover 2, a pump motor unit 3, a heat exchanger 4, a valve group 5 and a sealing strip 6;

[0030] The upper end surface of the box body 1 is surrounded by a rectangular groove 101 and a screw hole 102, wherein the screw hole 102 is located outside the rectangular groove 101, and the sealing strip 6 is embedded in the rectangular groove 101;

[0031] The upper cover 2 is fixedly connected to the box body 1 by screws, and the sealing strip 6 is located between the upper cover 2 and the box body 1;

[0032] The pump motor unit 3, the heat exchanger 4 and the valve group 5 are respectively fixedly connected to the upper cover 2, and the oil return port of the valve group 5 is connected to the heat exchanger 4 through a pipeline.

[0033] Working principle: The sealing strip 6 is embedded in the rectangular groove 101, which is easy to install, has low requirements on the workers' technical level, saves installation time, and the sealing strip 6 will not be squeezed out or deviated when installing the upper cover 2, ensuring that the oil tank is installed tightly while also ensuring the overall beauty; at the same time, the screw hole 102 is on the outside of the rectangular groove 101, so even if there is water in the upper cover 2, it can only leak from the screw hole 102 and will not enter the interior of the oil tank, ensuring that the hydraulic oil will not be contaminated and deteriorated by water.

[0034] Specifically, the upper cover 2 includes a main board 201 and a welding plate 202 . The welding plate 202 is welded on the main board 201 . The welding plate 202 is fixedly connected to the pump motor unit 3 , the heat exchanger 4 and the valve unit 5 , respectively.

[0035] The welding plate 202 is processed with screw holes for fixing the pump motor unit 3, the heat exchanger 4 and the valve group 5. There is a height difference between the welding plate 202 and the main board 201. Once there is a water leak at the heat exchanger 4, the water will flow to the top of the main board 201. In this way, the water will at most flow out through the screw holes at the main board 201, and will not flow into the interior of the box, ensuring that the hydraulic oil will not be contaminated.

[0036] Specifically, a ball valve 401 is installed at the water inlet of the heat exchanger 4 .

[0037] Installing the ball valve 401 can adjust the flow of cooling water, thereby achieving energy-saving effects. At the same time, when the heat exchanger 4 needs to be disassembled, the ball valve 401 can be closed to prevent the water retained therein from flowing out, thereby preventing water from contaminating the hydraulic oil to the greatest extent.

[0038] Specifically, the valve group 5 also includes a one-way valve 501 and a solenoid valve 502. The one-way valve 501 is installed at the inlet of the valve group 5 and is connected to the pump motor group 3 through a pipeline; the pressure port of the solenoid valve 502 is connected to the pressure port of the valve group 5, and the return oil port of the solenoid valve 502 is connected to the return oil port of the valve group 5.

[0039] The one-way valve 501 is provided to prevent the hydraulic oil from flowing back due to misoperation of the external actuating components, which may cause impact damage to the pump motor unit 3; the solenoid valve 502 can control the pressure of the external actuating components. By switching the direction of the solenoid valve 502, the residual pressure of the external actuating components can be quickly unloaded to ensure the safety of the external actuating components.

[0040] Specifically, a base 7 is provided below the box body 1 , an oil receiving pan 8 is welded above the base 7 , and the oil receiving pan 8 is fixedly connected to the box body 1 .

[0041] The oil receiving pan 8 is provided to receive hydraulic oil or cooling water and other debris leaked from the system, thereby ensuring the cleanliness of the on-site working environment and preventing on-site workers from being injured by slipping on the oil.

[0042] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A hydraulic station, characterized in that: include: Box body (1), upper cover (2), pump motor unit (3), heat exchanger (4), valve unit (5) and sealing strip (6); The upper end surface of the box body (1) is provided with a rectangular groove (101) and a screw hole (102) which are enclosed on all sides. The screw hole (102) is located outside the rectangular groove (101), and the sealing strip (6) is embedded in the rectangular groove (101); The upper cover (2) and the box body (1) are fixedly connected by screws, and the sealing strip (6) is located between the upper cover (2) and the box body (1); The pump motor unit (3), the heat exchanger (4) and the valve group (5) are respectively fixedly connected to the upper cover (2), and the oil return port of the valve group (5) is connected to the heat exchanger (4) through a pipeline.

2. A hydraulic station according to claim 1, characterized in that: The upper cover (2) comprises a main board (201) and a welding plate (202), wherein the welding plate (202) is welded above the main board (201), and the welding plate (202) is fixedly connected to the pump motor unit (3), the heat exchanger (4), and the valve unit (5), respectively.

3. A hydraulic station according to claim 1, characterized in that: A ball valve (401) is installed at the water inlet of the heat exchanger (4).

4. A hydraulic station according to claim 1, characterized in that: The valve group (5) further comprises a one-way valve (501) and a solenoid valve (502). The one-way valve (501) is installed at the inlet of the valve group (5) and is connected to the pump motor group (3) via a pipeline. The pressure port of the solenoid valve (502) is communicated with the pressure port of the valve group (5), and the oil return port of the solenoid valve (502) is communicated with the oil return port of the valve group (5).

5. A hydraulic station according to claim 1, characterized in that: A base (7) is further provided below the box body (1), an oil receiving pan (8) is welded above the base (7), and the oil receiving pan (8) is fixedly connected to the box body (1).

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