An emergency hydraulic power unit

Abstract

The present invention discloses an emergency hydraulic power unit, which includes a manual pump, an oil tank and an integrated valve block. The integrated valve block is provided with a working port and an oil port. The working port is used for connecting an actuator, and the oil port is correspondingly connected to the oil tank. The manual pump is connected in series between the oil port and the oil tank. A first hydraulic lock is arranged in the integrated valve block, and the first hydraulic lock is correspondingly connected between the working port and the oil port. An emergency port is further arranged on the integrated valve block, and the emergency port is used for externally connecting a hydraulic pump. A second hydraulic lock and a throttle valve are further arranged in the integrated valve block, and the second hydraulic lock and the throttle valve are sequentially connected between the working port and the emergency port. The present invention has the advantages of simple and compact structure, convenient operation and improved work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic power units, and particularly relates to an emergency hydraulic power unit. Background Art

[0002] A hydraulic power unit is an oil supply device, mainly applied to actuators such as hydraulic systems, hydraulic devices, and hydraulic tools. Currently, the hydraulic power unit mainly drives a hydraulic pump through a motor to pump out the oil in the fuel tank and supply it to the corresponding actuator. However, when the power system fails or cannot work, or when the hydraulic power unit itself fails, the hydraulic power unit cannot work properly, and the actuator connected to it cannot operate normally either, which not only delays the work progress but also affects the work efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide an emergency hydraulic power unit aiming at the defects and deficiencies of the prior art, which has the advantages of simple and compact structure, convenient operation, and improved work efficiency.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an emergency hydraulic power unit, including a manual pump, a fuel tank, and an integrated valve block. The integrated valve block is provided with a working port and an oil port. The working port is used to connect to an actuator, the oil port is correspondingly connected to the fuel tank, the manual pump is connected in series between the oil port and the fuel tank, and a first hydraulic lock is arranged in the integrated valve block, and the first hydraulic lock is correspondingly connected between the working port and the oil port; an emergency port is further arranged on the integrated valve block, the emergency port is used to externally connect a hydraulic pump, and a second hydraulic lock and a throttle valve are further arranged in the integrated valve block, and the second hydraulic lock and the throttle valve are sequentially connected between the working port and the emergency port.

[0005] Further, the working port includes a working X port and a working Y port, the oil port includes an oil inlet and an oil return port, the first inlet A port of the first hydraulic lock is connected to the oil inlet, the first outlet 1A port is connected to the working X port, the second inlet 1B port is connected to the working Y port, and the second outlet B port is connected to the oil return port;

[0006] The emergency port includes an emergency A port and an emergency B port, the first inlet A port of the second hydraulic lock is connected to the emergency A port, the first outlet 1A port is connected to the working X port, the second inlet 1B port is connected to the working Y port, and the second outlet B port is connected to the emergency B port; to prevent oil from flowing back and ensure stable oil output.

[0007] Further, throttle valves are connected between the first inlet A port of the second hydraulic lock and the emergency A port and between the second outlet B port of the second hydraulic lock and the emergency B port.

[0008] Furthermore, it further includes a relief valve, and the manual pump is connected to the fuel tank through the relief valve.

[0009] Furthermore, the manual pump includes a pump body and a piston rod. A pump oil port is provided on the pump body. A piston cylinder is provided on the pump body. The top end of the piston cylinder is communicated with the pump oil port through a first channel. The bottom end of the piston cylinder extends into the fuel tank through an oil suction pipe. A first inlet check valve is provided at the bottom end of the piston cylinder. A handle bracket is hinged to the top end of the piston rod. The handle bracket is hinged to the pump body through a connecting rod. A rocker is connected to the handle bracket. A piston that is slidably and sealingly matched with the piston cylinder is provided at the bottom end of the piston rod. The piston divides the inner cavity of the piston cylinder into an upper cavity and a lower cavity. A second channel communicating the upper cavity and the lower cavity is provided on the piston. A second inlet check valve is provided in the second channel.

[0010] Furthermore, a reversing valve is provided on the pump body. The working A port of the reversing valve is connected to the oil inlet, the working B port is connected to the oil return port, the oil supply P port is connected to the pump oil port, and the oil return T port is connected to the fuel tank; it is convenient to change the oil flow direction and make the actuator operate conveniently.

[0011] Furthermore, a gasket is pressed between the pump body and the fuel tank; it improves the sealing performance and avoids oil leakage.

[0012] Furthermore, a stop valve for controlling the on / off of the first channel is provided on the pump body.

[0013] Furthermore, a filter screen corresponding to the oil suction pipe is provided at the bottom end of the piston cylinder; it ensures the cleanliness of the incoming oil and avoids blocking the pipeline or the manual pump.

[0014] The beneficial effects of the present invention are as follows: First, by providing a manual pump, an oil tank, and an integrated valve block, the integrated valve block is provided with working ports and oil ports. The working ports are used to connect the actuating device, and the oil ports are correspondingly connected to the oil tank. The manual pump is connected in series between the oil port and the oil tank. During use, only the manual pump needs to be operated to pump the oil in the oil tank out. The oil flows through the integrated valve block and flows from the working port to the actuating device. The whole process can manually pump oil without the need for power supply, solving the problem that the power system in the prior art fails and cannot be used normally. The structure is simple and compact, and the operation is very simple. Second, by providing a first hydraulic lock, a second hydraulic lock, and a throttle valve in the integrated valve block, the backflow of oil is avoided, enabling the oil to be quickly pumped to the actuating device, improving the working efficiency and reducing the labor intensity of the operator. Third, an emergency port is also provided on the integrated valve block, so that when the manual pump fails or cannot pump oil normally, an external hydraulic pump can be connected, enabling the actuating device to still continue to work, ensuring the work progress and improving the working efficiency. Generally speaking, the present invention has the advantages of simple and compact structure, convenient operation, and improved working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the present invention.

[0016] Figure 2 is the exploded schematic diagram of the present invention.

[0017] Figure 3 is the pipeline connection schematic diagram of the present invention.

[0018] Figure 4 is the structural schematic diagram of the manual pump in the present invention.

[0019] As shown in the figure: 1 - manual pump; 11 - pump body; 11.1 - oil pumping port; 11.2 - first channel; 12 - piston rod; 12.1 - piston; 12.2 - second channel; 13 - piston cylinder; 14 - suction pipe; 15 - first inlet check valve; 16 - handle bracket; 17 - connecting rod; 18 - rocker; 19 - second inlet check valve; 20 - stop valve; 2 - oil tank; 3 - integrated valve block; 3.1 - working port X; 3.2 - working port Y; 3.3 - inlet port; 3.4 - return port; 3.5 - emergency port A; 3.6 - emergency port B; 31 - first hydraulic lock; 32 - second hydraulic lock; 33 - throttle valve; 4 - relief valve; 5 - directional control valve; 6 - gasket; 7 - filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] For a more intuitive and complete understanding of the technical solution of the present invention, the following non-restrictive feature description is provided in conjunction with the drawings of the present invention:

[0021] As Figures 1 to 4As shown in the figure, an emergency hydraulic power unit includes a manual pump 1, a fuel tank 2 and an integrated valve block 3. The integrated valve block 3 is provided with a working port and an oil port. The working port is used to connect to an actuator, and the oil port is correspondingly connected to the fuel tank 2. The manual pump 1 is connected in series between the oil port and the fuel tank 2. A first hydraulic lock 31 is provided inside the integrated valve block 3, and the first hydraulic lock 31 is correspondingly connected between the working port and the oil port; an emergency port is also provided on the integrated valve block 3, and the emergency port is used to externally connect a hydraulic pump. A second hydraulic lock 32 and a throttle valve 33 are also provided inside the integrated valve block 3, and the second hydraulic lock 32 and the throttle valve 33 are sequentially connected between the working port and the emergency port; specifically, the integrated valve block 3 and the manual pump 1 are correspondingly connected through a U-shaped pipe. The externally connected hydraulic pump can be a manual hydraulic pump, an electric hydraulic pump, a plunger hydraulic pump, a vane hydraulic pump, etc. Basically, hydraulic pumps on the market can be correspondingly connected to the emergency port through pipes; under normal circumstances, the emergency port is generally sealed by a plug to prevent oil leakage and the entry of impurities.

[0022] The working port includes a working port X 3.1 and a working port Y 3.2. The oil port includes an oil inlet 3.3 and an oil return port 3.4. The first oil inlet A port of the first hydraulic lock 31 is connected to the oil inlet 3.3, the first oil outlet A1 port is connected to the working port X 3.1, the second oil inlet B1 port is connected to the working port Y 3.2, and the second oil outlet B port is connected to the oil return port 3.4; the emergency port includes an emergency port A 3.5 and an emergency port B 3.6. The first oil inlet A port of the second hydraulic lock 32 is connected to the emergency port A 3.5, the first oil outlet A1 port is connected to the working port X 3.1, the second oil inlet B1 port is connected to the working port Y 3.2, and the second oil outlet B port is connected to the emergency port B 3.6.

[0023] A throttle valve 33 is connected between the first oil inlet A port of the second hydraulic lock 32 and the emergency port A 3.5 and between the second oil outlet B port of the second hydraulic lock and the emergency port B 3.6; preferably, the throttle valves 33 are all one-way throttle valves to further prevent oil from flowing back.

[0024] Preferably, the first hydraulic lock 31, the second hydraulic lock 32 and the throttle valve 33 are all cartridge valves, making the installation convenient and fast.

[0025] Specifically, it further includes a relief valve 4. The manual pump 1 is connected to the fuel tank 2 through the relief valve 4; a pressure gauge is also connected through a pipeline correspondingly to display the oil pressure in the corresponding pipeline to ensure that the oil is within the normal range; a dust cover is also provided on the pump body 11. The dust cover is sleeved and matched with the piston rod 12. The top end of the dust cover is hermetically connected to the piston rod 12, and the bottom end of the dust cover is hermetically connected to the pump body 11, playing a role in dust prevention, keeping the piston rod 11 clean and extending the service life.

[0026] The manual pump 1 includes a pump body 11 and a piston rod 12. A pump oil port 11.1 is formed on the pump body 11. A piston cylinder 13 is provided on the pump body 11. The top end of the piston cylinder 13 is communicated with the pump oil port 11.1 through a first channel 11.2. The bottom end of the piston cylinder 13 extends into the fuel tank 2 through an oil suction pipe 14. A first oil inlet check valve 15 is provided at the bottom end of the piston cylinder 13. The top end of the piston rod 12 is hinged with a handle bracket 16. The handle bracket 16 is hinged with the pump body 11 through a connecting rod 17. A rocker 18 is connected to the handle bracket 16. A piston 12.1 that is slidably and sealingly matched with the piston cylinder 13 is provided at the bottom end of the piston rod 12. The piston 12.1 divides the inner cavity of the piston cylinder 13 into an upper cavity and a lower cavity. A second channel 12.2 that communicates the upper cavity and the lower cavity is formed on the piston 12.1. A second oil inlet check valve 19 is provided in the second channel 12.2.

[0027] A reversing valve 5 is provided on the pump body 11. The working port A of the reversing valve 5 is connected to the oil inlet 3.3, the working port B is connected to the oil return port 3.4, the oil supply port P is connected to the pump oil port 11.1, and the oil return port T is connected to the fuel tank 2. A gasket 6 is pressed between the pump body 11 and the fuel tank 2. A stop valve 20 for controlling the on-off of the first channel 11.2 is provided on the pump body 11. Specifically, the reversing valve 5 is a three-position four-way solenoid valve with a Y-type neutral function.

[0028] A filter screen 7 corresponding to the oil suction pipe 14 is provided at the bottom end of the piston cylinder 13.

[0029] Specifically, the rocker 18 is sleeved and matched with the handle bracket 16, which is convenient for disassembly and use. An anti-slip rubber sleeve is provided at the end of the rocker 18 to prevent slipping during operation.

[0030] The specific working principle of the present invention is as follows: During installation, the emergency hydraulic power unit can be correspondingly connected to actuators such as a hydraulic system, a hydraulic device, and a hydraulic tool. When emergency oil supply is required, simply reciprocate the rocker 18 by hand to drive the manual pump 1 to work. The suction pipe 14 sucks the oil in the fuel tank 2, and the oil sequentially passes through the first inlet check valve 15, the lower chamber, the second inlet check valve 16, the second passage 12.2, the upper chamber, and the first passage 11.2. Under the action of the first inlet check valve 15 and the second inlet check valve 16, the oil will not flow back. The manual pump 1 pumps oil into the integrated valve block 3, and the oil then sequentially passes through the oil supply P port of the reversing valve 5, the working A port of the reversing valve 5, the inlet port 3.3, the first inlet A port of the first hydraulic lock 31, the first outlet A1 port of the first hydraulic lock 31, and the working X port 3.1 to supply oil to the connected actuator. The oil in the actuator sequentially passes through the working Y port 3.2, the second inlet B1 port of the first hydraulic lock 31, the second outlet B port of the first hydraulic lock 31, the oil return port 3.4, the working B port of the reversing valve 5, and the oil return T port of the reversing valve 5 and flows back into the fuel tank. When reversing is required, control the reversing valve 5 to reverse, so that the working Y port 3.2 supplies oil to the actuator and returns from the working X port 3.1.

[0031] When the manual pump 1 fails or cannot pump oil normally, remove the plug at the emergency port and then connect it to the hydraulic pump through a pipeline, so that the oil flows in from the emergency A port 3.5 and sequentially passes through the throttle valve 33 on the left (reference Figure 3 ), the first inlet A port of the second hydraulic lock 32, and the first outlet A1 port of the second hydraulic lock 32, and finally flows from the working X port 3.1 into the actuator. Similarly, the oil in the actuator sequentially passes through the working Y port 3.2, the second inlet B1 port of the second hydraulic lock 32, the second outlet B port of the second hydraulic lock 32, and the throttle valve 33 on the right (reference Figure 3 ), and finally flows out from the emergency B port 3.6.

[0032] The above is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. An emergency hydraulic power unit, characterized in that: it includes a manual pump (1), an oil tank (2) and an integrated valve block (3). The integrated valve block (3) is provided with working ports and oil ports. The working ports are used to connect the actuating devices. The oil ports are correspondingly connected to the oil tank (2). The manual pump (1) is connected in series between the oil ports and the oil tank (2). A first hydraulic lock (31) is arranged in the integrated valve block (3), and the first hydraulic lock (31) is correspondingly connected between the working ports and the oil ports; an emergency port is also arranged on the integrated valve block (3), and the emergency port is used to externally connect a hydraulic pump. A second hydraulic lock (32) and a throttle valve (33) are also arranged in the integrated valve block (3), and the second hydraulic lock (32) and the throttle valve (33) are sequentially connected between the working ports and the emergency port; the manual pump (1) includes a pump body (11) and a piston rod (12). A pump oil port (11.1) is opened on the pump body (11). A piston cylinder (13) is arranged on the pump body (11). The top end of the piston cylinder (13) is communicated with the pump oil port (11.1) through a first channel (11.2). The bottom end of the piston cylinder (13) extends into the oil tank (2) through an oil suction pipe (14). A first inlet check valve (15) is arranged at the bottom end of the piston cylinder (13); the top end of the piston rod (12) is hinged with a handle bracket (16). The handle bracket (16) is hinged with the pump body (11) through a connecting rod (17). A rocker (18) is connected to the handle bracket (16). A piston (12.1) which is in sliding and sealing fit with the piston cylinder (13) is arranged at the bottom end of the piston rod (12). The piston (12.1) divides the inner cavity of the piston cylinder (13) into an upper cavity and a lower cavity. A second channel (12.2) communicating the upper cavity and the lower cavity is opened on the piston (12.1). A second inlet check valve (19) is arranged in the second channel (12.2).

2. An emergency hydraulic power unit according to claim 1, characterized in that: the working ports include a working port X (3.1) and a working port Y (3.2). The oil ports include an inlet port (3.3) and a return port (3.4). The first inlet port A of the first hydraulic lock (31) is connected to the inlet port (3.3), the first outlet port A1 is connected to the working port X (3.1), the second inlet port B1 is connected to the working port Y (3.2), and the second outlet port B is connected to the return port (3.4); the emergency ports include an emergency port A (3.5) and an emergency port B (3.6). The first inlet port A of the second hydraulic lock (32) is connected to the emergency port A (3.5), the first outlet port A1 is connected to the working port X (3.1), the second inlet port B1 is connected to the working port Y (3.2), and the second outlet port B is connected to the emergency port B (3.6).

3. An emergency hydraulic power unit according to claim 2, characterized in that: A throttle valve (33) is connected between the first oil inlet A port of the second hydraulic lock (32) and the emergency A port (3.5), and between the second oil outlet B port of the second hydraulic lock and the emergency B port (3.6).

4. An emergency hydraulic power unit according to claim 3, characterized in that: it further includes a relief valve (4), and the manual pump (1) is connected to the fuel tank (2) through the relief valve (4).

5. An emergency hydraulic power unit according to claim 2, characterized in that: a reversing valve (5) is provided on the pump body (11), the working A port of the reversing valve (5) is connected to the oil inlet port (3.3), the working B port is connected to the oil return port (3.4), the oil supply P port is connected to the pump oil port (11.1), and the oil return T port is connected to the fuel tank (2).

6. An emergency hydraulic power unit according to claim 1, characterized in that: a gasket (6) is pressed between the pump body (11) and the fuel tank (2).

7. An emergency hydraulic power unit according to claim 1, characterized in that: a stop valve (20) for controlling the on-off of the first channel (11.2) is provided on the pump body (11).

8. An emergency hydraulic power unit according to claim 1, characterized in that: a filter screen (7) corresponding to the suction pipe (14) is provided at the bottom end of the piston cylinder (13).

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