Crane pump station

Abstract

The utility model relates to the technical field of emergency hydraulic stations, in particular to a crane pump station which comprises a hydraulic oil tank assembly, a diesel engine, a duplex gear pump, a manual reversing valve and an electromagnetic reversing valve. According to the emergency hydraulic station, the oil path system of the emergency hydraulic station is optimized, so that the emergency hydraulic station can output oil pressure with various pressures, such as a Pil oil supply path, an A oil supply path, a B oil supply path, a K oil supply path and a PC oil supply path, so that the oil supply pressure requirements of crane equipment with different specifications are met, and the emergency requirements of field operation are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency hydraulic stations, in particular to a crane pump station. Background Art

[0002] At least one emergency hydraulic station is required in a site where multiple lifting equipment are working to ensure the normal and safe operation of the lifting equipment.

[0003] Conventional hydraulic stations can only output one or two types of pressure oil, and cannot take into account the problem of hydraulic system failures that may exist in multiple lifting equipment in a site. For this reason, the utility model provides a new type of crane pump station. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a crane pump station.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Crane pump station, including:

[0007] A hydraulic oil tank assembly, a diesel engine, a duplex gear pump, a manual reversing valve, and an electromagnetic reversing valve. The diesel engine is used to drive the duplex gear pump. A first oil circuit is installed between the duplex gear pump and the hydraulic oil tank assembly. The output end of the duplex gear pump is connected to a first pressure main oil supply circuit and a second pressure main oil supply circuit.

[0008] The first pressure main oil supply circuit is connected to the P interface of the manual reversing valve, the A interface of the manual reversing valve is connected to the Pil oil supply circuit and the A oil supply circuit, the B interface of the manual reversing valve is connected to the B oil supply circuit, and a shuttle valve and a double balance valve are connected between the A oil supply circuit and the B oil supply circuit;

[0009] The second pressure main oil supply circuit is connected to the P interface of the electromagnetic reversing valve, the A interface of the electromagnetic reversing valve is connected to the K oil supply circuit, and the reversing valve is installed on the K oil supply circuit, and the third direct-acting relief valve and the fourth direct-acting relief valve are installed on the K oil supply circuit and behind the reversing valve, and the branch oil circuit where the third direct-acting relief valve or the fourth direct-acting relief valve is located is installed with an electromagnetic ball valve, and the B interface of the electromagnetic reversing valve is connected to the PC oil supply circuit;

[0010] It also includes: an oil return circuit, the T interface of the manual reversing valve and the T interface of the electromagnetic reversing valve are both connected to the oil return circuit;

[0011] The reversing valve is connected to the oil return circuit, and the reversing valve is used to switch the K oil supply circuit to be connected with the oil return circuit or the A interface of the electromagnetic reversing valve.

[0012] As a further description of the above technical solution:

[0013] A second direct-acting relief valve is installed on the first pressure main oil supply line, and a first direct-acting relief valve is installed on the second pressure main oil supply line.

[0014] As a further description of the above technical solution:

[0015] It also includes: a tubular ball valve, which is installed in the first oil circuit and the oil return circuit, and is used to synchronously cut off / connect the first oil circuit and the oil return circuit.

[0016] As a further description of the above technical solution:

[0017] The oil return line is provided with a branch oil return line connected in parallel with the tubular ball valve, the branch oil return line is provided with a third one-way valve, and the oil return line is provided with an integrated oil and water cooler.

[0018] As a further description of the above technical solution:

[0019] The hydraulic oil tank assembly is provided with an air filter, a liquid level switch and a liquid level gauge, and the control circuit of the diesel engine is provided with a vacuum transmitter.

[0020] As a further description of the above technical solution:

[0021] A second pressure gauge is installed on the first-pressure main oil supply line, and a first pressure gauge is installed on the second-pressure main oil supply line.

[0022] As a further description of the above technical solution:

[0023] A second one-way valve is installed on the first-pressure main oil supply line, and a first one-way valve is installed on the second-pressure main oil supply line.

[0024] The utility model has the following beneficial effects:

[0025] 1. Compared with the existing technology, the crane pump station optimizes the oil circuit system of the emergency hydraulic station to enable it to output oil pressures of various pressures, such as: Pil oil supply circuit, A oil supply circuit, B oil supply circuit, K oil supply circuit (K oil supply circuit can output two different oil pressures), PC oil supply circuit, so as to meet the oil supply pressure requirements of crane equipment of different specifications and ensure the emergency needs of on-site operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional schematic diagram of the crane pump station proposed in the utility model;

[0027] Figure 2 This is a front view of the crane pump station proposed by the utility model;

[0028] Figure 3 This is the schematic diagram of the crane pump station proposed in the utility model.

[0029] Legend:

[0030] 1. Hydraulic oil tank assembly; 2. Air filter; 3. Liquid level switch; 4. Liquid level gauge; 5. Oil-water integrated cooler; 6. Third one-way valve; 7. Tubular ball valve; 8. Vacuum transmitter; 9. Diesel engine; 10. Duplex gear pump; 11. First one-way valve; 12. Second one-way valve; 13. First direct-acting relief valve; 14. Second direct-acting relief valve; 15. First pressure gauge; 16. Second pressure gauge; 17. Manual reversing valve; 18. Solenoid reversing valve; 19. Shuttle valve; 20. Third direct-acting relief valve; 21. Fourth direct-acting relief valve; 22. Reversing valve; 23. Double balancing valve; 24. Solenoid ball valve. DETAILED DESCRIPTION

[0031] Reference Figure 1-Figure 3 The crane pump station provided by the utility model includes: a hydraulic oil tank assembly 1, a diesel engine 9, a double gear pump 10, a manual reversing valve 17, an electromagnetic reversing valve 18, and an oil return circuit.

[0032] The diesel engine 9 uses a 403D-15T three-cylinder water-cooled diesel engine with a rated power of 27KW@2500rpm, a rated torque of 111.4NM@1800rpm, and a National III emission standard. The diesel engine 9 is used to drive a duplex gear pump 10. The two gear pumps in the duplex gear pump 10 run synchronously. For example, one of the gear pumps is a 20ML / r gear pump and the other is a 5ML / r gear pump. The two gear pumps have the same coaxial speed.

[0033] A first oil circuit is installed between the double gear pump 10 and the hydraulic oil tank assembly 1. The first oil circuit supplies oil to the two gear pumps. The output end of the double gear pump 10 is connected to the first pressure main oil supply circuit and the second pressure main oil supply circuit. Figure 3 As shown in the figure, the 20ML / r gear pump corresponds to the first pressure main oil supply circuit, and the 5ML / r gear pump corresponds to the second pressure main oil supply circuit. The two gear pumps work to generate two different pressures of oil pressure.

[0034] The first pressure main oil supply circuit is connected to the P interface of the manual reversing valve 17, the A interface of the manual reversing valve 17 is connected to the Pil oil supply circuit and the A oil supply circuit, the B interface of the manual reversing valve 17 is connected to the B oil supply circuit, the shuttle valve 19 and the double balance valve 23 are connected between the A oil supply circuit and the B oil supply circuit, and the A oil supply circuit and the B oil supply circuit form a group of oil supply (one supplies oil and the other returns oil, which is switched by the manual reversing valve 17).

[0035] The second pressure main oil supply circuit is connected to the P interface of the electromagnetic reversing valve 18, the A interface of the electromagnetic reversing valve 18 is connected to the K oil supply circuit, and the reversing valve 22 is installed on the K oil supply circuit, and the third direct-acting overflow valve 20 and the fourth direct-acting overflow valve 21 are installed on the K oil supply circuit and behind the reversing valve 22, and the electromagnetic ball valve 24 is installed on the branch oil circuit where the third direct-acting overflow valve 20 or the fourth direct-acting overflow valve 21 is located. The overflow pressures set for the third direct-acting overflow valve 20 and the fourth direct-acting overflow valve 21 are different, and they are switched according to demand. For example, the third direct-acting overflow valve 20 uses a pressure of 30 bar, and the fourth direct-acting overflow valve 21 is set to a pressure of 15 bar. When the electromagnetic ball valve 24 is closed, the K oil supply circuit outputs a pressure of 30 bar. When the electromagnetic ball valve 24 is opened, the K oil supply circuit outputs a pressure of 15 bar. The B interface of the electromagnetic reversing valve 18 is connected to the PC oil supply circuit.

[0036] The manual reversing valve 17 and the electromagnetic reversing valve 18 are both three-position four-way reversing valves with a middle position function of "H" type.

[0037] The T interface of the manual reversing valve 17 and the T interface of the electromagnetic reversing valve 18 are both connected to the oil return line.

[0038] The reversing valve 22 is connected to the oil return circuit, and the reversing valve 22 is used to switch the K oil supply circuit to the oil return circuit or the A interface of the electromagnetic reversing valve 18; that is, when the reversing valve 22 is in the first valve position, the K oil supply circuit is connected to the A interface of the electromagnetic reversing valve 18, and when the reversing valve 22 is in the second valve position, the K oil supply circuit is connected to the oil return circuit.

[0039] In one embodiment, a second direct-acting relief valve 14 is installed on the first pressure main oil supply line, and a first direct-acting relief valve 13 is installed on the second pressure main oil supply line.

[0040] Although the two gear pumps on the double gear pump 10 can output oil with different pressures, the oil pressure is not stable when the gear pump is working. By designing the second direct-acting relief valve 14 and the first direct-acting relief valve 13, the first pressure main oil supply circuit and the second pressure main oil supply circuit can output stable oil pressure.

[0041] For example, the second direct-acting relief valve 14 can be set to a pressure of 250 bar, and the first direct-acting relief valve 13 can be set to a pressure of 80 bar.

[0042] In one embodiment, it also includes: a tubular ball valve 7, which is installed in the first oil circuit and the return oil circuit. The tubular ball valve 7 is used to synchronously cut off / connect the first oil circuit and the return oil circuit, and is used to close the first oil circuit and the return oil circuit when the equipment is not working, so as to maintain the sealing of the hydraulic oil tank assembly 1.

[0043] In one embodiment, a branch return oil circuit connected in parallel with the tubular ball valve 7 is installed on the return oil circuit, a third one-way valve 6 is installed on the branch return oil circuit, and an oil-water integrated cooler 5 is installed on the return oil circuit, and oil can be returned from the branch return oil circuit in a one-way manner to the hydraulic oil tank assembly 1.

[0044] In one embodiment, the hydraulic oil tank assembly 1 is provided with an air filter 2 , a liquid level switch 3 , and a liquid level gauge 4 , and the control circuit of the diesel engine 9 is installed with a vacuum transmitter 8 .

[0045] In one embodiment, a second pressure gauge 16 is installed on the first pressure main oil supply line, and a first pressure gauge 15 is installed on the second pressure main oil supply line. The second pressure gauge 16 and the first pressure gauge 15 are used to display the pressure in the oil circuit.

[0046] In one embodiment, a second one-way valve 12 is installed on the first pressure main oil supply line, and a first one-way valve 11 is installed on the second pressure main oil supply line.

[0047] The crane pump station can be designed as a mobile pump station to facilitate moving it to the place of use.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Crane pump station, characterized in that, include: A hydraulic oil tank assembly (1), a diesel engine (9), a double gear pump (10), a manual reversing valve (17), and an electromagnetic reversing valve (18); the diesel engine (9) is used to drive the double gear pump (10); a first oil circuit is installed between the double gear pump (10) and the hydraulic oil tank assembly (1); and the output end of the double gear pump (10) is connected to a first pressure main oil supply circuit and a second pressure main oil supply circuit; The first pressure main oil supply circuit is connected to the P interface of the manual reversing valve (17), the A interface of the manual reversing valve (17) is connected to the Pil oil supply circuit and the A oil supply circuit, the B interface of the manual reversing valve (17) is connected to the B oil supply circuit, and a shuttle valve (19) and a double balance valve (23) are connected between the A oil supply circuit and the B oil supply circuit; The second pressure main oil supply circuit is connected to the P interface of the electromagnetic reversing valve (18), the A interface of the electromagnetic reversing valve (18) is connected to the K oil supply circuit, and a reversing valve (22) is installed on the K oil supply circuit, and a third direct-acting relief valve (20) and a fourth direct-acting relief valve (21) are installed on the K oil supply circuit and located behind the reversing valve (22), and an electromagnetic ball valve (24) is installed on the branch oil circuit where the third direct-acting relief valve (20) or the fourth direct-acting relief valve (21) is located, and the B interface of the electromagnetic reversing valve (18) is connected to the PC oil supply circuit; It also includes: an oil return circuit, the T interface of the manual reversing valve (17) and the T interface of the electromagnetic reversing valve (18) are both connected to the oil return circuit; The reversing valve (22) is connected to the oil return circuit, and the reversing valve (22) is used to switch the K oil supply circuit to be connected to the oil return circuit or the A interface of the electromagnetic reversing valve (18).

2. The crane pump station according to claim 1, characterized in that: A second direct-acting relief valve (14) is installed on the first pressure main oil supply line, and a first direct-acting relief valve (13) is installed on the second pressure main oil supply line.

3. The crane pump station according to claim 1, characterized in that: Also includes: A tubular ball valve (7) is installed on the first oil circuit and the oil return circuit, and the tubular ball valve (7) is used to synchronously cut off / connect the first oil circuit and the oil return circuit.

4. The crane pump station according to claim 3, characterized in that: The oil return line is provided with a branch oil return line connected in parallel with the tubular ball valve (7), the branch oil return line is provided with a third one-way valve (6), and the oil return line is provided with an integrated oil and water cooler (5).

5. The crane pump station according to claim 1, characterized in that: The hydraulic oil tank assembly (1) is provided with an air filter (2), a liquid level switch (3), and a liquid level meter (4), and the control circuit of the diesel engine (9) is installed with a vacuum transmitter (8).

6. The crane pump station according to claim 1, characterized in that: A second pressure gauge (16) is installed on the first-pressure main oil supply line, and a first pressure gauge (15) is installed on the second-pressure main oil supply line.

7. The crane pump station according to claim 1, characterized in that: A second one-way valve (12) is installed on the first pressure main oil supply line, and a first one-way valve (11) is installed on the second pressure main oil supply line.

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