Double-pump energy-saving hydraulic system of pin dismounting machine

Abstract

The utility model relates to a double-pump energy-saving hydraulic system of a pin dismounting machine, which comprises a motor, a duplex oil pump, a coupler, an operating valve group, a hydraulic control valve, an unloading overflow valve, a hydraulic pipeline, an oil tank, an energy storage device, an impact hammer, an oil cylinder, an overflow valve, a first one-way valve and a second one-way valve, the duplex oil pump comprises a first oil pump and a second oil pump, the power of the first oil pump is smaller than that of the second oil pump, and the first oil pump and the second oil pump supply liquid to the hydraulic system through a first one-way valve and a second one-way valve respectively. The number of the operating valve groups is two, and the operating valve groups control the impact hammer and the oil cylinder to carry out pin dismounting and oil supply actions respectively. The utility model has the advantages of ingenious design, simple structure, capability of adapting to large working flow change, small system calorific value, stable operation, energy conservation, consumption reduction, safety and reliability, and has good market prospect and development space compared with the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic support pin shaft dismantling technical field especially relates to a kind of double-pump energy-saving hydraulic system of pin puller. BACKGROUND

[0002] The disassembly of hydraulic support is time-consuming and laborious, especially the disassembly of pin shaft, which is a very tricky link. The conventional method is to use a hammer to hit manually. This method consumes a lot of manpower and is inefficient. If a hydraulic system single pump is used to drive an impact hammer for disassembly, the flow of the hydraulic system action control is 40 liters per minute, and the flow of the hydraulic system consumed by the pin disassembly action is 100 liters per minute. The conventional single pump hydraulic system cannot quickly adapt to variable, and the hydraulic system mechanical efficiency is low under the single pump hydraulic system. The hydraulic oil heats up seriously, the oil deteriorates quickly, the use and maintenance cost is high, and it cannot be widely used.

[0003] How to design a double-pump energy-saving hydraulic system for pin puller with clever design, simple structure, large working flow variation, small system heat, stable operation, energy saving, and safe and reliable is a problem to be solved urgently UTILITY MODEL CONTENT

[0004] To solve the problems of time-consuming and laborious, low efficiency, single pump driving impact hammer for disassembly cannot quickly adapt to variable, hydraulic oil heats up seriously, oil deteriorates quickly, use and maintenance cost is high, and cannot be widely used in the process of disassembling pin shaft of existing hydraulic support, the utility model provides a double-pump energy-saving hydraulic system for pin puller to realize the purpose of clever design, simple structure, large working flow variation, small system heat, stable operation, energy saving, and safe and reliable.

[0005] The utility model provides a double-pump energy-saving hydraulic system for pin puller, which comprises a motor, a double oil pump, a shaft coupling, a control valve group, a hydraulic control valve, an unloading overflow valve, a hydraulic pipeline, an oil tank, an energy accumulator, an impact hammer, an oil cylinder, an overflow valve, a first check valve and a second check valve. The motor drives the double oil pump to operate through the shaft coupling. The double oil pump comprises a first oil pump and a second oil pump. The power of the first oil pump is less than that of the second oil pump. The first oil pump and the second oil pump supply liquid to the hydraulic system through the first check valve and the second check valve respectively. The control valve group has two groups, which control the impact hammer and the oil cylinder to disassemble and supply oil respectively.

[0006] As a further optimization scheme of the above-mentioned double-pump energy-saving hydraulic system for pin puller, a pressure gauge is arranged on the hydraulic pipeline to monitor the pressure in the pipeline.

[0007] As a further optimization solution of the above-mentioned dual-pump energy-saving hydraulic system of the pinning machine, the accumulator stores energy through the first one-way valve, and the first oil pump unloads through the unloading relief valve under the action of the accumulator.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] 1. The present invention includes a motor, a duplex oil pump, a coupling, a control valve assembly, a hydraulically controlled valve, an unloading relief valve, hydraulic piping, an oil tank, an accumulator, an impact hammer, an oil cylinder, a relief valve, a first check valve, and a second check valve. This system utilizes a single motor to drive the duplex oil pumps, employing hydraulic control to activate different pumps for fluid supply under different operating conditions, enabling the hydraulic system to efficiently meet the uneven hydraulic flow requirements of the pin remover.

[0010] Second, the utility model has a clever design, low system maintenance cost, high mechanical efficiency, low system heat generation, simple structure, reasonable configuration, safety and reliability, and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Markings in the figure: 1. Motor, 2. Duplex oil pump, 2a. First oil pump, 2b. Second oil pump, 3. Coupling, 4. Control valve group, 5. Hydraulic control valve, 6. Unloading relief valve, 7. Pressure gauge, 8. Hydraulic pipeline, 9. Oil tank, 10. Accumulator, 11. Impact hammer, 12. Oil cylinder, 13. Relief valve, 14. First one-way valve, 15. Second one-way valve. DETAILED DESCRIPTION

[0013] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0014] like Figure 1 As shown, a dual-pump energy-saving hydraulic system for a pinning machine includes a motor 1, a dual oil pump 2, a coupling 3, a control valve group 4, a hydraulic control valve 5, an unloading relief valve 6, a hydraulic pipeline 8, an oil tank 9, an accumulator 10, an impact hammer 11, an oil cylinder 12, a relief valve 13, a first non-return valve 14 and a second non-return valve 15. The motor 1 drives the dual oil pump 2 through the coupling 3 to operate. The dual oil pump 2 includes a first oil pump 2a and a second oil pump 2b. The power of the first oil pump 2a is less than that of the second oil pump 2b. The first oil pump 2a and the second oil pump 2b supply fluid to the hydraulic system through the first non-return valve 14 and the second non-return valve 15 respectively. The number of the control valve groups 4 is two, which respectively control the impact hammer 11 and the oil cylinder 12 to perform pinning and oil supply actions.

[0015] The hydraulic pipeline 8 is provided with a pressure gauge 7 for monitoring the pressure in the pipeline.

[0016] The energy accumulator 10 stores energy through the first one-way valve 14 , and the first oil pump 2 a unloads oil through the unloading relief valve 6 under the action of the energy accumulator 10 .

[0017] The working process of this utility model is as follows:

[0018] See Figure 1 As shown, the hydraulic system is driven by a motor 1 through a coupling 3 to drive a duplex pump 2. After starting the motor 1, the first oil pump 2a and the second oil pump 2b of the duplex pump operate simultaneously. The first oil pump 2a uses a 40 pump, and the second oil pump 2b uses a 60 pump. They store energy in the accumulator 10 through a first check valve 14. After energy is stored, the first oil pump 2a unloads through the unloading relief valve 6 under the action of the accumulator 10. The second oil pump 2b unloads through the hydraulic control valve 5. The relief valve 13 ensures the safety of the entire system.

[0019] When the control valve group 4 is operated to control the system, the first oil pump 2a supplies oil to the system through the first one-way valve 14, and the second oil pump 2b continues to unload oil under the control of the hydraulic control valve 5.

[0020] When the control valve group 4 is operated to control the impact hammer 11 of the dismantling action, the control valve group 4 controls the hydraulic control valve 5 to close the unloading oil circuit of the second oil pump 2b. The second oil pump 2b merges with the first oil pump 2a through the second one-way valve 15 to supply oil. At this time, the flow rate reaches 100 liters per minute.

[0021] When the oil cylinder 12 is in motion, the hydraulic control valve 5 unloads oil through the oil circuit, the 40 pump supplies oil to the system through the first one-way valve 14, and the second one-way valve 15 is closed to prevent oil backflow. At this time, the flow rate reaches 40 liters per minute, which meets the requirements of the oil cylinder action.

[0022] In summary, the system meets functional requirements and achieves significant energy savings. Without enhanced cooling, the oil temperature rises by 25°C after three hours of continuous operation. This represents an 80% energy saving. While a conventional system consumes 480 kWh per day, this hydraulic system consumes 100 kWh per day.

[0023] The utility model has an ingenious design and a simple structure, can adapt to large changes in working flow, has low system heat generation, runs smoothly, saves energy and reduces consumption, is safe and reliable, and solves the problems of time-consuming and labor-intensive disassembly of the existing hydraulic support pin shaft, low efficiency, inability to quickly adapt to variables when disassembling with a single pump-driven impact hammer, severe heating of the hydraulic oil, rapid deterioration of the oil, high maintenance costs, and lack of wide applicability. Compared with the existing technology, it has good market prospects and development space.

[0024] The preferred specific embodiments and examples of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments and examples, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the concept of the utility model.

Claims

1. A dual-pump energy-saving hydraulic system for a pin removal machine, characterized by: The invention comprises a motor (1), a double oil pump (2), a coupling (3), a control valve group (4), a hydraulic control valve (5), an unloading overflow valve (6), a hydraulic pipeline (8), an oil tank (9), an accumulator (10), an impact hammer (11), an oil cylinder (12), an overflow valve (13), a first one-way valve (14) and a second one-way valve (15). The motor (1) drives the double oil pump (2) through the coupling (3) to operate. The double oil pump (2) comprises a first oil pump (2a) and a second oil pump (2b). The power of the first oil pump (2a) is less than that of the second oil pump (2b). The first oil pump (2a) and the second oil pump (2b) supply fluid to the hydraulic system through the first one-way valve (14) and the second one-way valve (15) respectively. The number of the control valve groups (4) is two, which respectively control the impact hammer (11) and the oil cylinder (12) to perform the dismantling and oil supplying actions.

2. A dual-pump energy-saving hydraulic system for a pin-breaking machine according to claim 1, characterized in that: The hydraulic pipeline (8) is provided with a pressure gauge (7) for monitoring the pressure in the pipeline.

3. A dual-pump energy-saving hydraulic system for a pin-breaking machine according to claim 1, characterized in that: The energy accumulator (10) stores energy through the first one-way valve (14), and the first oil pump (2a) unloads energy through the unloading overflow valve (6) under the action of the energy accumulator (10).

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