Intelligent multi-channel constant deceleration gate control system

Abstract

The utility model provides an intelligent multi-channel constant deceleration gate control system which comprises a hydraulic source unit which comprises an oil tank and a hydraulic oil pump, the hydraulic oil pump outputs hydraulic oil in the oil tank outwards through a pipeline, and the output oil path is divided into three paths, one path is connected with the proportional overflow valve and flows into the oil tank again, one path is communicated with the compensation unit, and the other path is communicated with the brake unit; the double-channel constant speed reduction hydraulic system is reasonable in design structure and convenient to use, adopts a double-channel constant speed reduction hydraulic system mode, can be provided with mutually independent working brake circuits, is provided with a standby circuit, and has the advantages of being high in safety, capable of achieving pressure two-way adjustment and fast in action response.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic control, and in particular relates to an intelligent multi-channel constant deceleration gate control system. Background Art

[0002] Mine hoists and belt conveyors are key equipment for mining enterprises. They undertake the important task of transporting mineral products, equipment, materials and operators between the mine surface and underground. They have extremely strict requirements on the safety and braking performance of the operation process; the gate control system hydraulic station is the key equipment of the braking system of mine hoists and belt conveyors. Its performance and reliability play a decisive role in the safe operation and reliable braking of mine hoists and belt conveyors.

[0003] At present, the gate control systems of existing mine hoists or belt conveyors are mostly single-channel hydraulic systems. When a failure occurs, it will cause downtime and increase safety hazards. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an intelligent multi-channel constant deceleration gate control system, which adopts a dual-channel constant deceleration hydraulic system, can have independent working brake circuits, and is equipped with a backup circuit, and has the advantages of high safety, two-way pressure adjustment, and fast action response.

[0005] The technical solution adopted by the utility model is: an intelligent multi-channel constant deceleration gate control system, comprising:

[0006] The hydraulic source unit includes an oil tank and a hydraulic oil pump. The hydraulic oil pump outputs the hydraulic oil in the oil tank through a pipeline. The output oil circuit is divided into three circuits, one of which is connected to the proportional relief valve and flows back into the oil tank, one of which is connected to the compensation unit, and the other is connected to the brake unit. The compensation unit and the brake unit are connected;

[0007] The compensation unit includes two circuit systems connected in parallel with each other, each circuit system includes a one-way valve, a proportional directional valve, an electromagnetic reversing valve and an accumulator, and the output ends of the two circuit systems are connected to the brake unit;

[0008] The brake unit comprises two independent electromagnetic reversing valves. Each electromagnetic reversing valve is connected to the brake after being connected to the stop valve.

[0009] The hydraulic source unit also includes an oil filter connected to the input and output ends of the hydraulic oil pump, an electric contact thermometer for monitoring the temperature of the hydraulic oil in the oil tank, an air cooler installed on the return pipeline of the proportional relief valve, a liquid level controller and a liquid level gauge for monitoring the capacity of the hydraulic oil, an electric heater arranged in the oil tank for heating the hydraulic oil, and an air filter.

[0010] Each loop system of the compensation unit also includes a throttle valve, an oil filter and a pressure gauge connected to the electromagnetic reversing valve, and also includes a pressure relay and a gate valve connected to the accumulator.

[0011] The output pipeline of the compensation unit is connected in parallel with two electromagnetic reversing valves, and the output pipelines of the two parallel electromagnetic reversing valves are connected with a braking unit.

[0012] In the brake unit, an oil filter is provided on the pipelines of the two independent electromagnetic reversing valves and the stop valve, and a pressure sensor is also connected in the circuit of the brake unit.

[0013] The beneficial effects of the utility model are:

[0014] The utility model has a reasonable design structure and is easy to use. It adopts a dual-channel constant deceleration hydraulic system, can have independent working brake circuits, and is equipped with a spare circuit. It has the advantages of high safety, two-way pressure adjustment, and fast action response. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the hydraulic principle diagram of the utility model;

[0016] Figure 2 It is a working interlocking table of the utility model.

[0017] Among them: 1. Oil tank; 2. Electric contact thermometer; 3. Liquid level gauge; 4. Air filter; 5. Oil filter; 6. Motor; 7. Hydraulic oil pump; 8. Remote pressure regulating valve; 10. Proportional relief valve; 11. Check valve; 12. Pressure gauge; 13. Pressure relay; 15. Gate valve; 16. Accumulator; 17. Proportional directional valve; 19. Relief valve; 20. Solenoid reversing valve; 23. Throttle valve; 24. Digital pressure transmitter; 26. Stop valve; 27. Pressure sensor; 28. Air cooler; 29. ​​Liquid level controller; 30. Electric heater. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] As shown in the figure, an intelligent multi-channel constant deceleration gate control system includes:

[0020] The hydraulic source unit includes an oil tank 1 and a hydraulic oil pump 7. The hydraulic oil pump 7 is driven by a motor 6. The hydraulic oil pump 7 outputs the hydraulic oil in the oil tank 1 through a pipeline. The output oil circuit is divided into three circuits. One circuit is connected to the proportional relief valve 10 and flows back into the oil tank 1. Another circuit is connected to the compensation unit. Another circuit is connected to the brake unit. The compensation unit and the brake unit are connected.

[0021] The compensation unit includes two circuit systems connected in parallel with each other, each circuit system includes a one-way valve 11, a proportional directional valve 17, an electromagnetic reversing valve 20 and an accumulator 16, and the output ends of the two circuit systems are connected to the brake unit;

[0022] The brake unit includes two independent electromagnetic reversing valves 20. Each electromagnetic reversing valve 20 is connected to the brake after being connected to the stop valve 26.

[0023] The hydraulic source unit also includes an oil filter 5 connected to the input and output ends of the hydraulic oil pump 7, an electric contact thermometer 2 for monitoring the temperature of the hydraulic oil in the oil tank 1, an air cooler 28 installed on the return pipeline of the proportional relief valve 10, a liquid level controller 29 and a liquid level meter 3 for monitoring the capacity of the hydraulic oil, an electric heater 30 and an air filter 4 arranged in the oil tank 1 for heating the hydraulic oil, and a remote pressure regulating valve 8 is also connected to the return pipeline between the proportional relief valve 10 and the air cooler 28.

[0024] Each circuit system of the compensation unit also includes a throttle valve 23 connected to the electromagnetic reversing valve 20 , an oil filter 5 and a pressure gauge 12 , and also includes a pressure relay 13 and a gate valve 15 connected to the accumulator 16 .

[0025] The output pipeline of the compensation unit is connected in parallel with two electromagnetic reversing valves 20 , the output pipelines of the two parallel electromagnetic reversing valves 20 are connected with a brake unit, and the loop formed by the two parallel electromagnetic reversing valves 20 is connected with a digital pressure transmitter 24 .

[0026] In the brake unit, an oil filter 5 is provided on the pipelines of the two independent electromagnetic reversing valves 20 and the stop valve 26, and a pressure sensor 27 is also connected in the circuit of the brake unit.

[0027] The gate control system with only constant deceleration described in this example has the following characteristics:

[0028] 1. Two hydraulic stations are configured, one for use and one for backup. The hydraulic stations are switched by manual ball valves and electrical conversion switches. A switch is configured to detect the valve switch status, which has the functions of valve opening and closing status monitoring and interlocking protection.

[0029] 2. Key components such as hydraulic pumps, pressure sensors, coolers, solenoid valves, etc. are imported brands, and the piping uses precision rolled pipes and ferrule-type pipe joints, which ensure firm and reliable connections without seepage or oil leakage.

[0030] 3. The key electromagnetic reversing valve involved in safety braking adopts a safety solenoid valve with valve core position monitoring, which can realize valve core position interlocking protection; the safety braking control circuit adopts a two-wire system, the hardware circuits are interlocked and backed up, and each solenoid valve is equipped with an independent control relay, which does not interfere with each other.

[0031] 4. It has the functions of automatic and manual heating and cooling of oil. The cooling method is air cooling.

[0032] 5. A double pump is used as the hydraulic oil source. The main pump is an imported constant pressure variable piston pump with low heat generation, low noise, energy saving and high efficiency. An independent auxiliary circulation pump is equipped for filtering and cooling the system oil.

[0033] 6. Two relatively independent accumulators are configured as emergency power sources for safety braking, and have the function of monitoring the air and oil pressure of the accumulators.

[0034] 7. Two digital proportional relief valves in series are used as working brake pressure regulating elements. The hysteresis loop of the "voltage-oil pressure" curve is small, the linearity and repeatability are high, the constant pressure is accurate and stable, and it can be controlled manually and automatically. The series structure can ensure that when any proportional relief valve fails, the system can still regulate the pressure normally, ensuring the safety and reliability of the system.

[0035] 8. Two digital proportional reversing valves are used as regulating elements for two constant deceleration control circuits, with high control accuracy, fast action response and two-way pressure regulation.

[0036] 9. It shall have independent working brake and safety brake circuits, each with a backup circuit, and the number of safety brake oil drain circuits shall be more than two.

[0037] 10. It has monitoring and protection functions such as oil temperature, oil pressure, liquid level, filter element blockage, etc. It can monitor the working status of brake application and release, as well as the residual pressure value of brake when parking.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. An intelligent multi-channel constant deceleration gate control system, characterized in that: include: The hydraulic source unit includes an oil tank and a hydraulic oil pump. The hydraulic oil pump outputs the hydraulic oil in the oil tank through a pipeline. The output oil circuit is divided into three circuits, one of which is connected to the proportional relief valve and flows back into the oil tank, one of which is connected to the compensation unit, and the other is connected to the brake unit. The compensation unit and the brake unit are connected; The hydraulic source unit also includes an oil filter connected to the input and output ends of the hydraulic oil pump, an electric contact thermometer for monitoring the temperature of the hydraulic oil in the oil tank, an air cooler installed on the return pipeline of the proportional relief valve, a liquid level controller and a liquid level meter for monitoring the capacity of the hydraulic oil, an electric heater arranged in the oil tank for heating the hydraulic oil, and an air filter; The compensation unit includes two circuit systems connected in parallel with each other, each circuit system includes a one-way valve, a proportional directional valve, an electromagnetic reversing valve and an accumulator, and the output ends of the two circuit systems are connected to the brake unit; The brake unit comprises two independent electromagnetic reversing valves. Each electromagnetic reversing valve is connected to the stop valve and then connected to the brake.

2. The intelligent multi-channel constant deceleration gate control system according to claim 1, characterized in that: Each loop system of the compensation unit also includes a throttle valve, an oil filter and a pressure gauge connected to the electromagnetic reversing valve, and also includes a pressure relay and a gate valve connected to the accumulator.

3. The intelligent multi-channel constant deceleration gate control system according to claim 2, characterized in that: The output pipeline of the compensation unit is connected with two electromagnetic reversing valves in parallel, and the output pipelines of the two parallel electromagnetic reversing valves are connected with a brake unit.

4. The intelligent multi-channel constant deceleration gate control system according to claim 1, characterized in that: In the brake unit, an oil filter is provided on the pipelines of the two independent electromagnetic reversing valves and the stop valve, and a pressure sensor is also connected in the circuit of the brake unit.

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