Hydraulic power unit with leakage-proof device

Abstract

The utility model relates to a hydraulic power unit with a leakage-proof device, which belongs to the technical field of hydraulic power units and comprises an oil tank, hydraulic equipment is arranged at the top of the oil tank, a protective seat is fixedly connected to the top of the oil tank, and a protective component is mounted at the top of the protective seat. The guard assembly includes an intermediate plate. According to the hydraulic power unit with the leakage-proof device, when an oil injection port is used for injecting hydraulic oil, a middle plate is placed at the top of the oil injection port, then the hydraulic oil can be injected, the situation that the hydraulic oil leaks to one side is prevented, and then a sealing plate is clamped to the top of the middle plate through a pressing block; an inner protection plate is clamped and sealed with an annular plate through a sealing gasket, finally, an outer protection seat covers the top of the protection seat, two pressing columns press and limit the outer protection seat, it is guaranteed that an oil injection opening is not affected by the external environment, two bolts are in threaded connection with the interiors of two first fixing blocks, and final fixed connection is conducted. Therefore, external dust is not easy to enter.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic power unit technical field, concretely is a hydraulic power unit with leakage protection device. BACKGROUND

[0002] Hydraulic power unit (HPU) is used as oil supply device, it is connected with several hydraulic cylinders through external pipeline system to control the action of multiple valves, and oil tank, oil pump and accumulator constitute independent closed power oil source system, and the oil station can be equipped with PLC control system, which controls all internal hydraulic functions and generates signals to exchange with control room (DCS), and control elements such as hydraulic servo valve are directly installed on the hydraulic cylinder, high-pressure oil is pressed into the cylinder through the valve, or high-pressure oil is discharged from the cylinder.

[0003] According to Chinese patent CN219197756U, a hydraulic power unit with leakage protection device, when hydraulic power is required, the motor is started to drive the hydraulic pump to suck the oil in the oil tank, so that it enters the valve block, then the electromagnetic valve is opened according to the situation, so that the oil in the valve block enters the oil tank through the return pipe; when adding or discharging hydraulic oil, unscrew the closure cover to expose the oil inlet, so as to add or discharge hydraulic oil; after adding or discharging hydraulic oil, cover and tighten the closure cover, which can complete the sealing of the oil inlet; when the closure cover is tightened, the spring provides pressing force for the closure plate, the closure plate seals the oil inlet, the bottom of the closure cover is in contact with the flexible sealing ring to improve the sealing performance; once the closure cover is loose, the closure plate still has certain sealing ability under the action of the spring, which reduces the possibility of leakage; the utility model improves the sealing performance of the oil inlet and reduces the possibility of leakage.

[0004] In the above device, the oil inlet is not provided with a protective structure, so that the hydraulic oil is easy to leak into other positions of the oil tank when being injected, and dust is easy to enter around the closure cover, therefore, a hydraulic power unit with leakage protection device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a hydraulic power unit with leakage protection device, which has an oil inlet with a protective structure, so that the closure cover is not easy to enter dust, ensuring the cleanliness of the hydraulic oil, and solving the problems that the oil inlet is not provided with a protective structure, so that the hydraulic oil is easy to leak into other positions of the oil tank when being injected, and dust is easy to enter around the closure cover.

[0006] To achieve the above object, the utility model provides the following technical scheme: A hydraulic power unit with leakage prevention device, including oil tank, the top of oil tank is provided with hydraulic equipment, the top of oil tank is fixedly connected with the protection seat, the top of protection seat is installed with protection assembly,

[0007] Protection assembly includes intermediate plate, the intermediate plate is installed at the top of protection seat, the bottom of intermediate plate is fixedly connected with the draft tube, the top of intermediate plate is fixedly connected with annular plate, the top of annular plate is fixedly connected with sealing plate, the bottom of sealing plate is fixedly connected with pressure block, the bottom of sealing plate is fixedly connected with inner protection plate, the top of sealing plate is installed with outer protection seat.

[0008] Further, the inside of the oil tank is provided with an oil inlet, the draft tube is located inside the oil tank through the oil inlet, the top of the protection seat is fixedly connected with the annular positioning plate, and the intermediate plate is located at the top of the protection seat through the annular positioning plate.

[0009] Further, the inside of the intermediate plate is provided with a plugging hole, the pressure block is located inside the intermediate plate through the plugging hole, the inside of the annular plate is installed with a sealing gasket, and the inner protection plate is tightly attached to the top of the sealing gasket.

[0010] Further, the bottom of the outer protection seat is fixedly connected with two pressure columns, the inside of the sealing plate is provided with two pressure column holes, and the two pressure columns are located inside the sealing plate through the pressure column holes.

[0011] Further, the left and right sides of the protection seat are fixedly connected with first fixed blocks, the left and right sides of the outer protection seat are fixedly connected with second fixed blocks, the inside of the two first fixed blocks is screw-connected with bolts, and the two bolts extend into the inside of the two first fixed blocks.

[0012] Further, the outer surface of the outer protection seat is clamped with the top of the protection seat, and a sealing ring is installed in the middle.

[0013] Compared with the prior art, the technical scheme of the present application has the following advantages:

[0014] 1、The hydraulic power unit with leakage prevention device, when the oil inlet is filled with hydraulic oil, the intermediate plate is placed on the top of the oil inlet, then the hydraulic oil can be filled, the hydraulic oil leakage to one side is prevented, the sealing plate is clamped on the top of the intermediate plate through the pressure block, the inner protection plate is clamped and sealed with the annular plate through the sealing gasket, and finally the outer protection seat is covered on the top of the protection seat, the two pressure columns are pressed and positioned, the oil inlet is not affected by the external environment, the two bolts are screw-connected into the inside of the two first fixed blocks, and finally fixed and connected, so that the external dust is not easy to enter.

[0015] 2、The hydraulic power unit with leakage prevention device, since the through hole in the middle plate is compressed and protected via the pressing block 9, and the inner protection plate is located inside the annular plate, it ensures that after filling with hydraulic oil, the oil filling port can play a multi-layer protection role, reducing the probability of hydraulic oil leakage. Since the outer protection seat and the protection seat are sealed by a sealing ring and fastened by bolts, when affected by external environment, for example: bumping, the outer protection seat can play a protective role, and try to prevent the oil filling port from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a main sectional view of the utility model structure;

[0017] Fig. 2 It is a local plan view of the utility model structure;

[0018] Fig. 3 It is a perspective view of the utility model structure.

[0019] In the drawing: 1, oil tank; 2, hydraulic equipment; 3, protection seat; 4, annular positioning plate; 5, middle plate; 6, flow guide pipe; 7, annular plate; 8, sealing plate; 9, pressing block; 10, inner protection plate; 11, sealing gasket; 12, outer protection seat; 13, pressing column; 14, second fixed block; 15, first fixed block; 16, bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figs. 1-3 The hydraulic power unit with leakage prevention device in the embodiment comprises an oil tank 1, the top of the oil tank 1 is provided with a hydraulic equipment 2, the top of the oil tank 1 is fixedly connected with a protection seat 3, the top of the protection seat 3 is fixedly connected with an annular positioning plate 4, a middle plate 5 is located on the top of the protection seat 3 through the annular positioning plate 4, and a protection assembly is installed on the top of the protection seat 3.

[0022] The protection assembly comprises the middle plate 5, the middle plate 5 is installed on the top of the protection seat 3, the bottom of the middle plate 5 is fixedly connected with a flow guide pipe 6, an oil filling port is formed in the inside of the oil tank 1, and the flow guide pipe 6 is located in the inside of the oil tank 1 through the oil filling port.

[0023] The top of the intermediate plate 5 is fixedly connected with an annular plate 7, the top of the annular plate 7 is fixedly connected with a sealing plate 8, the bottom of the sealing plate 8 is fixedly connected with a pressing block 9, the inside of the intermediate plate 5 is provided with a blocking hole, and the pressing block 9 is located in the inside of the intermediate plate 5 through the blocking hole.

[0024] The bottom of the sealing plate 8 is fixedly connected with an inner protective plate 10, the inside of the annular plate 7 is mounted with a sealing gasket 11, the inner protective plate 10 is tightly attached to the top of the sealing gasket 11, the top of the sealing plate 8 is mounted with an outer protective seat 12, the outer surface of the outer protective seat 12 is clamped with the top of the protective seat 3, and a sealing ring is mounted in the middle.

[0025] The bottom of the outer protective seat 12 is fixedly connected with two pressing columns 13, the inside of the sealing plate 8 is provided with two pressing column holes, and the two pressing columns 13 are located in the inside of the sealing plate 8 through the pressing column holes.

[0026] The left and right sides of the protective seat 3 are fixedly connected with first fixing blocks 15, the left and right sides of the outer protective seat 12 are fixedly connected with second fixing blocks 14, the inside of the two first fixing blocks 15 is threadedly connected with bolts 16, and the two bolts 16 extend into the inside of the two first fixing blocks 15.

[0027] In the embodiment, the through hole in the inside of the intermediate plate 5 is tightly protected through the pressing block 9, and the inner protective plate 10 is located in the inside of the annular plate 7, so that after the hydraulic oil is filled, the oil filling port can play a multi-layer protection role and reduce the probability of hydraulic oil leakage.

[0028] In the embodiment, the outer protective seat 12 and the protective seat 3 are sealed in the mode of the sealing ring and are fastened through the bolts 16, so that when affected by the external environment, for example, bumping, the outer protective seat 12 can play a protection role and try to prevent the oil filling port from being damaged.

[0029] The working principle of the above embodiment is as follows:

[0030] The hydraulic power unit with the leakage prevention device is used when the oil filling port is filled with hydraulic oil, the intermediate plate 5 is placed on the top of the oil filling port, then the hydraulic oil can be filled, the leakage of the hydraulic oil to one side is prevented, the sealing plate 8 is clamped on the top of the intermediate plate 5 through the pressing block 9, the inner protective plate 10 is clamped and sealed with the annular plate 7 through the sealing gasket 11, the outer protective seat 12 is covered on the top of the protective seat 3, the two pressing columns 13 are tightly positioned, the oil filling port is prevented from being affected by the external environment, the two bolts 16 are threadedly connected into the inside of the two first fixing blocks 15, and finally fixedly connected, so that the external dust is prevented from entering.

[0031] It should be noted that the standard parts used in the application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the mature bolt, rivet, welding and the like in the prior art, the conventional means, and the conventional type of mechanical parts and equipment is adopted in the prior art; in addition, the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail herein, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0032] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0033] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. Hydraulic power unit with leakage protection, comprising an oil tank (1), characterized in that: The top of the oil tank (1) is provided with a hydraulic device (2), and the top of the oil tank (1) is fixedly connected with a protection seat (3), and the top of the protection seat (3) is provided with a protection assembly. The protection assembly comprises an intermediate plate (5) installed on the top of the protection seat (3), the bottom of the intermediate plate (5) is fixedly connected with a flow guide pipe (6), the top of the intermediate plate (5) is fixedly connected with an annular plate (7), the top of the annular plate (7) is fixedly connected with a sealing plate (8), the bottom of the sealing plate (8) is fixedly connected with a pressing block (9), the bottom of the sealing plate (8) is fixedly connected with an inner protection plate (10), and the top of the sealing plate (8) is provided with an outer protection seat (12).

2. A hydraulic power unit with a leakage prevention device according to claim 1, characterized in that: The inside of the oil tank (1) is provided with an oil inlet, the flow guide pipe (6) is located in the inside of the oil tank (1) through the oil inlet, the top of the protection seat (3) is fixedly connected with an annular positioning plate (4), and the intermediate plate (5) is located on the top of the protection seat (3) through the annular positioning plate (4).

3. A hydraulic power unit having a leak protection device as defined in claim 1, characterized in that: The inside of the intermediate plate (5) is provided with a plugging hole, the pressing block (9) is located in the inside of the intermediate plate (5) through the plugging hole, the annular plate (7) is provided with a sealing gasket (11) in the inside, and the inner protection plate (10) is tightly attached to the top of the sealing gasket (11).

4. A hydraulic power unit having a leak protection device as defined in claim 1, characterized in that: The bottom of the outer protection seat (12) is fixedly connected with two pressing columns (13), the inside of the sealing plate (8) is provided with two pressing column holes, and the two pressing columns (13) are located in the inside of the sealing plate (8) through the pressing column holes.

5. A hydraulic power unit having a leak protection device as defined in claim 1, characterized in that: The left and right sides of the protection seat (3) are fixedly connected with first fixed blocks (15), the left and right sides of the outer protection seat (12) are fixedly connected with second fixed blocks (14), the inside of the two first fixed blocks (15) is threadedly connected with bolts (16), and the two bolts (16) extend into the inside of the two first fixed blocks (15).

6. A hydraulic power unit having a leak protection device as defined in claim 1, characterized in that: The outer surface of the outer protection seat (12) is clamped with the top of the protection seat (3), and a sealing ring is installed in the middle.

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