CN215516477U - Hydraulic braking system of mine hoister - Google Patents
Hydraulic braking system of mine hoister Download PDFInfo
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- CN215516477U CN215516477U CN202120774013.XU CN202120774013U CN215516477U CN 215516477 U CN215516477 U CN 215516477U CN 202120774013 U CN202120774013 U CN 202120774013U CN 215516477 U CN215516477 U CN 215516477U
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Abstract
The utility model relates to a hydraulic braking system of a mining elevator. The utility model comprises the following steps: the first pump motor group and the second pump motor group respectively suck oil and pump out from an oil tank, an outlet of the first pump motor group is connected with one inlets of a first safety valve and a hydraulic reversing valve, an outlet of the second pump motor group is connected with a second safety valve and a second inlet of the hydraulic reversing valve, an outlet of the first safety valve is connected with a T port of an electromagnetic reversing valve G6\ G5\ G5S and a T port of an electromagnetic reversing valve G3S, the T port of the electromagnetic reversing valve G3 and an outlet of the second safety valve are connected with a return oil tank, an outlet of the hydraulic reversing valve is connected with the T port of an electromagnetic reversing valve G4 and the P port of an electromagnetic reversing valve G3\ G3S, an outlet of the electromagnetic reversing valve G6 is connected with a port of an energy accumulator and the P port of an electromagnetic reversing valve G4, and A ports of the electromagnetic reversing valve G5\ G5S and the electromagnetic reversing valve G4 are connected with a reversible flow one-way filter and then connected with a B pipe brake; the ports B of the electromagnetic directional valves G3\ G3S are connected with the reversible flow one-way filter and connected with the brake of the pipe A, so that the system has high reliability and low cost.
Description
Technical Field
The utility model belongs to the technical field of brake systems of mine elevators, and particularly relates to a hydraulic brake system of a mine elevator.
Background
The braking system of the mining hoist is an important system in the hoist and is directly related to personal safety and mine safety. The hydraulic system is generally used as a power source, and the disc brake is matched with a brake disc to complete braking.
The existing elevator brake hydraulic system is generally composed of two pump motor sets, a shuttle valve, an overflow valve and two electromagnetic directional valves, wherein the shuttle valve, the overflow valve and the two electromagnetic directional valves are respectively connected to oil outlet ends of two oil pumps, the two electromagnetic directional valves are used for respectively controlling the switching on and switching off of two disc brakes, heavy-load emergency stop conditions exist in the working process, and electromagnetic directional valves are used for reversing
The valve breaks down easily, and braking system just can't in time release pressure, makes the lifting machine out of control even cause the tank crash accident, can't guarantee equipment and borehole operation personnel's personal safety, consequently, needs hydraulic braking system to have sufficient safety redundancy, for example, needs hydraulic system fluid to keep clean for a long time, needs to set up necessary safety backup measure in the control circuit, needs to set up specific emergent switching function, and current mine promotes hydraulic braking system reliability is lower, and the urgent need improves.
Disclosure of Invention
The utility model discloses a hydraulic braking system of a mining elevator, aiming at solving the reliability problem of the hydraulic braking system of the mining elevator.
The utility model adopts the following technical scheme:
the hydraulic braking system of the mining hoister comprises an oil tank, two groups of pump motor sets, an energy storage module, a switching valve and two electromagnetic directional valves G3 and G4, wherein two oil inlets of the switching valve are respectively connected with oil outlets of the two groups of pump motor sets, and two oil inlets of the switching valve are respectively connected with the oil tank through a safety valve; inlets of the two electromagnetic directional valves G3 and G4 are respectively connected with an oil outlet of the switching valve; outlets of the two electromagnetic directional valves G3 and G4 are respectively connected with the A pipe brake and the B pipe brake; wherein: an oil circuit provided with an electromagnetic directional valve G3 is provided with an electromagnetic directional valve G3S in parallel, the electromagnetic directional valve G4\ G3\ G3S is a two-position three-way electromagnetic valve, a P port of an electromagnetic directional valve G4 is connected with an energy accumulator port, a T port of an electromagnetic directional valve G4 is connected with an oil outlet of a switching valve, an A port of the electromagnetic directional valve G4 is connected with a B pipe brake, a P port of the electromagnetic directional valve G3\ G3S is connected with an oil outlet of the switching valve, a T port of an electromagnetic directional valve G3 is connected with an oil tank, the safety valve comprises a first safety valve and a second safety valve, a T port of the electromagnetic directional valve G3S is connected with an outlet of the first safety valve, a two-position two-way electromagnetic directional valve G6 is arranged between the T port of the electromagnetic directional valve G3S and the energy accumulator port, a two-position two-way electromagnetic directional valve G5\ G5 is arranged between the T port of the electromagnetic directional valve G3S and an A port of the electromagnetic directional valve G4 in parallel, and the switching valve is a hydraulic directional valve 5S.
The electromagnetic directional valve G6 is in a normally closed state, the electromagnetic directional valve G5\ G5S is in a normally open state, the P port and the A port of the electromagnetic directional valve G4 are in a normally open state, the T port and the A port are in a normally closed state, the P port and the B port of the electromagnetic directional valve G3\ G3S are in a normally closed state, and the B port and the T port are in a normally open state.
Outlets of the electromagnetic directional valves G3 and G5 are respectively connected in series with a backflow one-way filter, and then are respectively connected with the A pipe brake and the B pipe brake.
Outlets of the A pipe brake and the B pipe brake are respectively connected with a foot valve, and the foot valve reverses to merge outlets of the A pipe brake and the B pipe brake to the oil tank.
The hydraulic change valve is a control structure of a meso position O function.
The first safety valve and the second safety valve are overflow valves or explosion-proof overflow valves, and the first pump motor set and the second pump motor set are vane pumps controlled by motors or explosion-proof motors.
The first safety valve and the second safety valve are proportional overflow valves or explosion-proof proportional overflow valves, and the first pump motor set and the second pump motor set are inner meshing gear pumps controlled by servo motors.
The first safety valve, the second safety valve and the hydraulic reversing valve are mounted on the first integrated block, the energy storage module, the two-position two-way electromagnetic reversing valve G6\ G5\ G5S and the two-position three-way electromagnetic reversing valve G4\ G3\ G3S are mounted on the second integrated block, and the first integrated block and the second integrated block are arranged at the top of the oil tank.
The port P3 of the hydraulic change valve is connected with a pressure sensor.
The top of the oil tank is provided with a top cover, and the top cover is also provided with a louver window.
Compared with the prior art, the utility model can obtain the following technical effects: the control loop of each brake is provided with two reversing valves, synchronous switching is realized to avoid valve clamping faults, the neutral O function in the hydraulic reversing valve is good in switching transition performance, the sliding valve mode switching is free of impact, the filtering performance of the backflow one-way filter arranged in the loop is ultrahigh, the pedal valve is high in emergency response capacity, the whole loop is complete in emergency function, high in reliability, modular in design and low in cost.
The utility model realizes the high-reliability control and low-cost safe operation of the hydraulic braking system of the mining elevator.
Drawings
FIG. 1 is a hydraulic schematic of the present invention;
FIG. 2 is a schematic diagram of the external structure and connection structure of the present invention.
The system comprises an oil tank 1, a first pump motor group 2, an oil suction filter 3, a high-pressure oil filter 4, a heater 5, a first safety valve 6, a second safety valve 7, a hydraulic reversing valve 8, a pressure sensor 9, an energy accumulator 10, a pressure reducing valve 11, a pressure reducing valve 12, a pressure releasing valve 13, a one-way valve 14, a first reversible flow one-way filter 14, a stop valve 15, a foot valve 16, a radiator 17, a reversible flow one-way filter 18, a top cover 19, an integrated block I20 and an integrated block II 21.
Detailed Description
As shown in fig. 1-2, the hydraulic braking system of the mining elevator comprises: the hydraulic control system comprises a first pump motor set 2, a second pump motor set, a first safety valve 6, a second safety valve 7, a hydraulic reversing valve 8, an electromagnetic reversing valve, an energy storage module, a reversible flow one-way filter, a brake and a radiator 17.
The energy storage module comprises a pressure reducing valve 11, a one-way valve 13, an energy accumulator 10 and a pressure relief valve 12, wherein the outlet of the pressure reducing valve 11 is connected with the one-way valve 13, the outlet of the one-way valve 13 is connected with the energy accumulator 10, and the oil port of the energy accumulator is connected with the pressure relief valve 12;
the electromagnetic directional valve includes: a two-position two-way electromagnetic directional valve G6\ G5\ G5S, and a two-position three-way electromagnetic directional valve G4\ G3\ G3S;
the reversible flow one-way filter includes a first reversible flow one-way filter 14 and a second reversible flow one-way filter 18;
the brake is divided into an A tube brake and a B tube brake;
the first pump motor group 2 and the second pump motor group respectively suck and pump oil from the oil tank 1, the oil suction pipeline of the first pump motor group 2 is provided with an oil suction oil filter 3, the outlet pipeline is provided with a high-pressure oil filter 4, the oil suction pipeline of the second pump motor group is provided with an oil suction oil filter, the outlet pipeline is provided with a high-pressure oil filter, the outlet of the high-pressure oil filter 4 is connected with a first safety valve 6 and a P1 port of a hydraulic reversing valve 8, the outlet of the high-pressure oil filter of the second pump motor group is connected with a second safety valve 7 and a P2 port of the hydraulic reversing valve 8, the hydraulic reversing valve 8 is preferably provided with a control structure of a meso-position O function, the outlet of the first safety valve 6 is connected with an outlet of a pressure release valve 12, a T port of an electromagnetic reversing valve G6/G5G 5S and a T port of the electromagnetic reversing valve G3S, a T port of the electromagnetic reversing valve G3 and an outlet of the second safety valve 7 are connected with a radiator 17 and return to the oil tank 1, and the P3 port of the hydraulic reversing valve 8 is connected with a pressure reducing valve 11 and a T port of an electromagnetic reversing valve G4, The P port of the electromagnetic directional valve G3\ G3S, the outlet of the electromagnetic directional valve G6 is connected with the energy accumulator port and the P port of the electromagnetic directional valve G4, the A ports of the electromagnetic directional valve G5\ G5S and the electromagnetic directional valve G4 are connected with the reversible flow one-way filter 14 together, and the first reversible flow one-way filter 14 is connected with the B pipe brake after being externally connected with the stop valve 15; the ports B of the electromagnetic directional valves G3\ G3S are connected with the second reversible flow one-way filter 18 together, and the second reversible flow one-way filter 18 is connected with the A pipe brake after being externally connected with a stop valve.
Furthermore, the interfaces of the A-tube brake and the B-tube brake are respectively connected with a foot valve 16, and the outlet of the foot valve 16 is connected with an oil tank.
Further, a pressure sensor 9 is connected to a port P3 of the hydraulically operated directional valve 8.
Preferably, the first safety valve 6 and the second safety valve 7 are relief valves or explosion-proof relief valves, proportional relief valves or explosion-proof proportional relief valves.
Preferably, the first pump motor group 2 and the second pump motor group are vane pumps controlled by a motor or an explosion-proof motor or inner gear pumps controlled by a servo motor.
As shown in fig. 1-2, a modular valve set is arranged on the top of the oil tank 1, which respectively comprises: the first safety valve 6, the second safety valve 7, the hydraulic reversing valve 8 and the high-pressure oil filter are connected to the first manifold block 20, and the first safety valve, the second safety valve, the hydraulic reversing valve and the high-pressure oil filter jointly form a pressure regulating valve group I; the energy storage module is connected with the second integrated block 21, the two-position two-way electromagnetic reversing valve G6\ G5\ G5S and the two-position three-way electromagnetic reversing valve G4\ G3\ G3S jointly form a reversing valve group II, the reversible flow one-way filter is connected in a pipe mode, and the first pump motor group 2 and the second pump motor group are mounted on the top of the oil tank 1 in an inverted mode. The top of the oil tank 1 is provided with a top cover 19, the top cover 19 is used for dust prevention and pressure prevention of a hydraulic braking system, the top cover 19 is further provided with a louver window to facilitate system heat dissipation, and the oil tank 1 is provided with a heater 5.
The working mode is as follows:
as shown in fig. 1, when the equipment is powered on, the two-position two-way electromagnetic directional valve G5\ G5S and the two-position three-way electromagnetic directional valve G4\ G3\ G3S are respectively electrically commutated, and the port P3 of the hydraulic directional valve 8 is communicated with the first reversible flow one-way filter 14 and the second reversible flow one-way filter 18; the motors of the first pump motor group 2 and the second pump motor group pump oil, the oil pressure is supplied to the brake separating of the B-tube brake through the hydraulic reversing valve 8 and the two-position three-way electromagnetic reversing valve G4, the oil pressure is supplied to the brake separating of the A-tube brake through the hydraulic reversing valve 8 and the two-position three-way electromagnetic reversing valve G3/G3S, and the oil pressure enters the energy storage module through the pressure reducing valve 11 and then charges the energy storage device 10.
When the work braking force is adjusted, the first safety valve 6 and the second safety valve 7 are proportional overflow valves or explosion-proof proportional overflow valves, and are matched with a vane pump controlled by an explosion-proof motor to adjust the pressure proportion.
When the work braking force is adjusted, the first safety valve 6 and the second safety valve 7 are overflow valves or explosion-proof overflow valves, and are matched with an internal gear pump controlled by a servo motor to adjust the pressure proportion.
When emergency braking is carried out in the deceleration section, the electromagnetic directional valve G6 is powered on, other valves are powered off, the pump motor is powered off, the two brakes are communicated with the oil tank 1 to release pressure, and closing and holding braking are carried out.
When emergency braking is carried out at a constant speed section, the electromagnetic directional valve G5 and the two-position three-way electromagnetic directional valve G4\ G3\ G3S lose power, the pump motor loses power, the electromagnetic directional valve G5S loses power in a delayed mode, the electromagnetic directional valve G6 is powered in a delayed mode, and slow-release closing and holding braking are carried out.
Claims (10)
1. The hydraulic braking system of the mining hoister comprises an oil tank (1), two groups of pump motor sets, an energy storage module, a switching valve and two electromagnetic directional valves G3 and G4, wherein two oil inlets of the switching valve are respectively connected with oil outlets of the two groups of pump motor sets, and two oil inlets of the switching valve are respectively connected with the oil tank (1) through a safety valve; inlets of the two electromagnetic directional valves G3 and G4 are respectively connected with an oil outlet of the switching valve; outlets of the two electromagnetic directional valves G3 and G4 are respectively connected with the A pipe brake and the B pipe brake; the method is characterized in that: an oil path of the electromagnetic directional valve G3 is provided with an electromagnetic directional valve G3S in parallel, the electromagnetic directional valve G4\ G3\ G3S is a two-position three-way electromagnetic valve, a P port of the electromagnetic directional valve G4 is connected with an energy accumulator port, a T port of the electromagnetic directional valve G4 is connected with an oil outlet of a switching valve, an A port of the electromagnetic directional valve G4 is connected with a B pipe brake, a P port of the electromagnetic directional valve G3\ G3S is connected with an oil outlet of the switching valve, a T port of the electromagnetic directional valve G3 is connected with an oil tank (1), the safety valves comprise a first safety valve (6) and a second safety valve (7), a T port of the electromagnetic directional valve G3S is connected with an outlet of the first safety valve (6), a two-position electromagnetic directional valve G38 is arranged between the T port of the electromagnetic directional valve G3S and the energy accumulator port, a two-position electromagnetic directional valve G585G S is arranged in parallel between the T port of the electromagnetic directional valve G S and the A port of the electromagnetic directional valve G4, the switching valve is a hydraulic reversing valve (8).
2. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: the electromagnetic directional valve G6 is in a normally closed state, the electromagnetic directional valve G5\ G5S is in a normally open state, the P port and the A port of the electromagnetic directional valve G4 are in a normally open state, the T port and the A port are in a normally closed state, the P port and the B port of the electromagnetic directional valve G3\ G3S are in a normally closed state, and the B port and the T port are in a normally open state.
3. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: outlets of the electromagnetic directional valves G3 and G5 are respectively connected in series with a backflow one-way filter, and then are respectively connected with the A pipe brake and the B pipe brake.
4. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: outlets of the A-tube brake and the B-tube brake are respectively connected with a foot valve (16), and the foot valve (16) reverses and merges outlets of the A-tube brake and the B-tube brake to the oil tank (1).
5. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: the hydraulic reversing valve (8) is a control structure of a middle position O function.
6. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: the first safety valve (6) and the second safety valve (7) are overflow valves or explosion-proof overflow valves, and the two groups of pump motor sets are motor or vane pumps controlled by explosion-proof motors.
7. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: the first safety valve (6) and the second safety valve (7) are proportional overflow valves or explosion-proof proportional overflow valves, and the two groups of pump motor sets are inner meshing gear pumps controlled by servo motors.
8. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: the hydraulic control system is characterized in that the first safety valve (6), the second safety valve (7) and the hydraulic reversing valve (8) are installed on the first integrated block (20), the energy storage module, the two-position two-way electromagnetic reversing valve G6\ G5\ G5S and the two-position three-way electromagnetic reversing valve G4\ G3\ G3S are installed on the second integrated block (21), and the first integrated block (20) and the second integrated block (21) are arranged at the top of the oil tank (1).
9. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: and a P3 port of the hydraulic reversing valve (8) is connected with a pressure sensor (9).
10. The hydraulic braking system of a mining hoist as claimed in claim 1, characterized in that: the top of the oil tank (1) is provided with a top cover (19), and the top cover (19) is also provided with a louver window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120774013.XU CN215516477U (en) | 2021-04-15 | 2021-04-15 | Hydraulic braking system of mine hoister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120774013.XU CN215516477U (en) | 2021-04-15 | 2021-04-15 | Hydraulic braking system of mine hoister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215516477U true CN215516477U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120774013.XU Active CN215516477U (en) | 2021-04-15 | 2021-04-15 | Hydraulic braking system of mine hoister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215516477U (en) |
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2021
- 2021-04-15 CN CN202120774013.XU patent/CN215516477U/en active Active
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