CN219469508U - Monorail anchor hoist driving hydraulic system and monorail anchor hoist - Google Patents

Abstract

The utility model provides a single track hanging roof-bolter drive hydraulic system, single track hanging roof-bolter belongs to single track hanging roof-bolter technical field, and it includes duplex pump group, main control valve, brake valve, drive portion, two-way balance valve, charging valve, check valve, energy storage ware, brake block, drive wheel, and duplex pump group includes variable plunger pump and gear pump, and drive portion includes drive portion motor, clamping cylinder, brake cylinder, and the brake valve contains shuttle valve, relief pressure valve, hydraulically controlled valve. The bidirectional balance valve is adopted, so that the motor stall of the driving part can be prevented from slipping; the energy accumulator is used for filling the brake cavity, so that the single-rail crane anchor rod can rapidly release braking, the braking is matched with driving, and the whole driving hydraulic system is simple in structure and stable.

Description

Monorail anchor hoist driving hydraulic system and monorail anchor hoist

Technical Field

The disclosure belongs to the technical field of monorail anchor hanging machines, and particularly relates to a driving hydraulic system of a monorail anchor hanging machine and the monorail anchor hanging machine.

Background

At present, most of equipment such as rock drilling vehicles, anchor rod drilling vehicles and the like adopts crawler-type or tire-type running modes in the tunneling construction of domestic coal mines, non-coal mines and the like. The external dimensions of the construction equipment are very narrow and very small, but the construction equipment occupies a small ground space, and the characteristics of narrow construction roadways exist all the time, so that the vehicle is difficult to get wrong, and the equipment in the previous procedure can exit the roadway before entering according to the procedure equipment, thereby bringing about great time and labor waste and even causing accidents. In recent years, the monorail anchor crane equipment in coal mine and non-coal mine construction is applied, and monorail crane transport vehicles, monorail anchor cranes and the like are more and more applied, so that the convenience of large space in the air and easy dislocation is fully reflected, and the monorail anchor crane equipment in auxiliary transportation and construction systems of domestic coal mines certainly can be widely applied in the near future.

However, the existing hydraulic braking system of the locomotive of the monorail anchor hoist is often complex in structure, poor in braking effect, and has the problems of shaking in the braking and throwing driving processes.

The patent with the publication number of CN112810634A discloses a driving device of a monorail anchor rod machine, wherein a hydraulic motor in a driving support is used for providing driving power and braking force for the driving device of the monorail anchor rod machine, a driving wheel driven by the hydraulic motor is tightly pressed against a track of a guide rail of the monorail anchor rod machine under the action of clamping force, friction force between the driving wheel and the track provides power for the running of a locomotive, a braking cylinder of a braking device is provided with a rod cavity, an oil inlet braking spring is contracted for energy storage, a brake block is separated from the track, and the driving device of the monorail anchor rod machine realizes the running; on the contrary, the brake cylinder releases hydraulic oil, the brake spring stretches by self elasticity and enables the brake pad to press the track, braking of the driving device of the monorail crane roof bolter is achieved, braking performance is strong, overall stability and safety performance are effectively improved, and overall working efficiency is improved. However, there is a problem that the system pressure is not stable enough in practical use.

Disclosure of Invention

The utility model provides a single track hanging roof bolt machine drive hydraulic system, single track hanging roof bolt machine to the problem that among the prior art, single track hanging roof bolt machine hydraulic braking system structure is complicated, system pressure is not stable enough, simple structure, hydraulic system are more stable.

One of the concepts of the present disclosure is that the brake valve outlet is connected to a bi-directional balance valve, and in the prior art, when the monorail anchor hoist descends a slope, there is a situation that the driving pressure is low, the clamping force is insufficient, and the motor of the driving part stalls, which will cause the monorail anchor hoist to slide. The two-way balance valve is connected between the brake valve and the motor of the driving part, so that the back oil cavity of the motor of the driving part has back pressure, and when the motor speed is high, the two-way balance valve can be closed to reduce the opening of the two-way balance valve, so that the motor speed is reduced, and stall is avoided.

Another concept of the present disclosure is to use a charge valve in a brake valve to charge and unload an accumulator. When the charging pressure of the accumulator reaches the set pressure of the charging valve, the charging valve unloads the pressure of the gear pump to the oil tank, so that the excessive flow is prevented from being unloaded through the overflow valve after the gear pump is filled in the accumulator, great heat productivity is caused, when the temperature of hydraulic oil exceeds 70 ℃, the sealing ring of the hydraulic system is aged at an accelerated speed, internal leakage is aggravated, abrasion is aggravated, and the failure rate of the hydraulic system is increased. After the accumulator continuously releases oil after a plurality of continuous braking operations are carried out, the pressure of the accumulator can be reduced, and when the pressure is reduced to a set value, the charging valve continuously charges the accumulator, so that the gear pump is circulated, the gear pump is ensured not to cause excessive oil to heat, and the brake is ensured to have enough pressure oil for braking operation.

Another concept of the disclosure is that the driving hydraulic system includes a driving pressure switch, a braking low pressure alarm pressure switch and a clamping low pressure alarm pressure switch, which are used for reminding operators of potential safety hazards existing in the monorail roof-bolter, and ensuring reliable operability, stability and safety.

Another concept of the disclosure is that the brake valve includes an electromagnetic ball valve connected in parallel with the hydraulic control valve, and when the hydraulic control valve fails, the electromagnetic ball valve can unload brake oil in the brake cylinder, so that the device is in a braking state.

Another concept of the disclosure is that the drive hydraulic system includes a trailer check valve for preventing leakage of hydraulic oil in the brake cylinder and a manual pump for manually pressurizing when the monorail bolter equipment fails, driving the pressurized oil into the brake cylinder to disengage the friction plate from the rail, and the monorail bolter can be towed by other equipment.

The single-rail anchor hoist driving hydraulic system comprises a duplex pump set, a main control valve, a brake valve, a driving part, a two-way balance valve, a liquid filling valve and an energy accumulator, wherein the duplex pump set comprises a plunger pump and a gear pump, the driving part comprises a driving part motor, a clamping cylinder and a brake cylinder, a plunger pump outlet is connected with the main control valve, a main control valve AB port is connected with the brake valve, a brake valve outlet is connected with the two-way balance valve, a two-way balance valve outlet is connected with the driving part motor AB port, and a clamping cylinder is driven by a C port of the brake valve to have a rod cavity so as to enable a driving wheel to drive a vehicle after being clamped with a track; the hydraulic control valve is used for enabling brake oil to be rapidly released from the energy accumulator to the brake cylinder, enabling the brake pad to be separated from the track, enabling an outlet of the liquid filling valve to be connected with a P port of the brake valve, enabling the liquid filling valve to be used for filling liquid for the energy accumulator and unloading pressure of the gear pump to the oil tank.

Further, the two-way balance valve is a 100 liter balance valve, the opening pressure of the two-way balance valve is 6Mpa, the diameter of a clamping cylinder is 80mm, the diameter of a rod is 40mm, and the clamping state is that the oil is fed by a rod cavity, namely, a rod cavity of a brake cylinder is used as a brake cavity.

In some embodiments, the driving hydraulic system comprises a driving pressure allowing switch, when the pressure of the brake cylinder cavity rises to a set threshold value, the driving pressure allowing switch is used for detecting the upward pressure and sending out a driving allowing signal, and an operator can normally operate a driving control handle to perform driving operation, so that driving when a brake pad is not released is avoided, and potential safety hazards are reduced.

In some embodiments, the drive hydraulic system includes a brake low pressure warning pressure switch that is triggered by a downward pressure when the brake cylinder chamber pressure drops to a set threshold, signaling an operator to service the equipment.

In some embodiments, the driving hydraulic system comprises a clamping low-pressure alarm pressure switch, when the pressure of the clamping cylinder is lower than a set threshold value, the clamping low-pressure alarm pressure switch is triggered, the switch is in downlink control, and the clamping low-pressure alarm pressure switch is arranged to be beneficial to preventing slipping and sliding.

In some embodiments, the brake valve further comprises a bypass solenoid valve connected in parallel with the pilot operated valve. The oil in the general brake cylinder returns to the oil tank through the hydraulic control valve, but the hydraulic control valve can have the faults of valve blocking, non-resetting and the like, so that the equipment can not brake. The bypass electromagnetic valve is additionally arranged, and is in a normally open state, so that oil in the brake cylinder can be released, and the reliability of the brake valve is improved.

Furthermore, the bypass electromagnetic valve is an electromagnetic ball valve, and the electromagnetic ball valve has better sealing performance relative to a sliding valve. Under the pressure of 20Mpa, the leakage quantity of a clearance between a valve core of a slide valve and a valve body is about 200ml/min, the pressure of a brake cavity of a brake cylinder is reduced due to pressure oil leakage, an accumulator is filled for the brake cylinder, a filling valve is filled for the accumulator, and the filling valve is continuously used for filling and discharging oil and unloading, so that the service life is prolonged. The electromagnetic ball valve has good sealing performance and has certain pressure maintaining function on the braking cavity.

In some embodiments, the drive hydraulic system includes a trailer check valve coupled to the brake chamber for preventing leakage of brake oil from the brake chamber and a manual pump coupled to the trailer check valve for inputting brake oil into the brake chamber to disengage the friction plate from the rail, the monorail anchor being capable of being towed by other equipment.

Compared with the prior art, the single-rail overhead bolting machine driving hydraulic system provided by the disclosure adopts the bidirectional balance valve to prevent the motor of the driving part from stalling and sliding; the pressure of the gear pump is unloaded by using the liquid filling valve, so that the oil heating caused by unloading of the overflow valve is avoided; the energy accumulator is used for filling the brake cavity, so that the single-rail crane anchor rod can rapidly remove the brake, the abrasion of a brake pad or the forward flushing during driving are avoided due to mismatching between the brake and the driving, and the energy accumulator can serve as auxiliary power for filling the brake cavity to release the brake for an operator when the brake power is lost (such as when a gear pump or a filling valve fails). The whole driving hydraulic system has simple structure and is stable.

The utility model provides a single track roof-bolter, it includes single track roof-bolter drive hydraulic system to, have four drive division, link to each other through the drive connecting rod between the adjacent drive division, drive division includes brake block and drive wheel, brake cylinder is connected with the brake block, and clamping cylinder is connected with the drive wheel, and the drive division motor is used for providing power for the drive wheel, single track roof-bolter crane driving steadily, can not take place forward running, skidding, swift current slope.

Drawings

The present disclosure will be described in further detail below in conjunction with the drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the present disclosure. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.

Fig. 1: the single-rail hanging roof bolter driving hydraulic system provided by the disclosure;

15, a plunger pump; 2. a gear pump; 3. a main control valve; 4. a brake valve; 4a, a shuttle valve; 4b, a pressure reducing valve; 4c, a hydraulic control valve; 4d, an electromagnetic ball valve; 4e, a one-way valve; 5. a two-way balancing valve; 6. a clamping cylinder; 7. an accumulator; 8. a brake cylinder; 9. a trailer one-way valve; 10. a manual pump; 11. a charging valve; 12. allowing a driving pressure switch; 13. braking the low-voltage alarm pressure switch; 14. clamping the low-voltage alarm pressure switch.

Detailed Description

The present disclosure is described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present disclosure will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present disclosure.

The first embodiment of the disclosure provides a hydraulic system driven by a monorail anchor crane, as shown in fig. 1, the hydraulic system comprises a duplex pump set, a main control valve 3, a brake valve 4, a driving part, a bidirectional balance valve 5, a liquid filling valve 11, a one-way valve 4e, an energy accumulator 7, a brake pad and a driving wheel, wherein the duplex pump set comprises a plunger pump 15 and a gear pump 2, the driving part comprises a driving part motor, a clamping cylinder 6 and a brake cylinder 8, an outlet of the plunger pump 15 is connected with the main control valve 3, an AB port of the main control valve 3 is connected with the brake valve 4, an outlet of the brake valve 4 is connected with the bidirectional balance valve 5, an outlet of the bidirectional balance valve 5 is connected with the AB port of the driving part motor, and a C port of the brake valve 4 drives the clamping cylinder 6 to have a rod cavity so as to enable the driving wheel to be clamped with a track for driving; the brake valve 4 comprises a shuttle valve 4a, a pressure reducing valve 4b and a hydraulic control valve 4c, wherein the shuttle valve 4a is used for introducing hydraulic oil into the pressure reducing valve 4b, the pressure reducing valve 4b is used for preventing the pressure of the clamping cylinder 6 from being overlarge, the hydraulic control valve 4c is used for enabling brake oil to be rapidly released from the accumulator 7 to the brake cylinder 8, the brake cylinder 8 enables a brake block to be separated from a track, an outlet of the charging valve 11 is connected with a P port of the brake valve 4, the charging valve 11 is connected with the accumulator 7 through a one-way valve 4e, the brake cylinder 8 is connected with the brake block, the clamping cylinder 6 is connected with a driving wheel, and a driving part motor is used for providing power for the driving wheel.

The charge valve 11 is used for charging the accumulator 7 with excess pressure oil output by the unloading gear pump 2, so that the pressure of the accumulator 7 is maintained in a set interval, such as 15Mpa-19Mpa, and the one-way valve 4e is used for preventing the pressure oil in the accumulator 7 from reversely driving the gear pump 2 to reversely rotate, and the gear pump 2 reversely drags the motor to rotate, thereby causing accidents.

More specifically, the driving hydraulic system is provided with four driving parts, the motor of the driving part can select a motor with rated output torque of 2000N.M or 2500N.M under 31.5Mpa pressure, the driving wheel can select a rubber wheel with the diameter of 340mm, each driving part comprises two driving part motors, taking a motor with output torque of 2500N.M and displacement of 560ml/r as an example, taking the mechanical efficiency as 0.8, the driving force F1=11750N of a single motor, the rolling friction coefficient of the rubber wheel and a track as 0.4-0.6, taking 0.6 as calculation, the driving force of the single driving part as F=14100N, the weight of the monorail crane is about 18 tons, and the driving force provided by the four driving parts is enough for the monorail crane to overcome the sliding force of the anchor rod crane on a 16-degree slope as 49.6 KN. In practical terms, the driving force is sufficient to cause the monorail anchor hoist to travel on a 16 ° slope at a pressure of 27.7 Mpa.

The main control valve 3 is a load-sensitive multi-way valve, the plunger pump 15 and the main control valve 3 form a load-sensitive loop, and the load-sensitive loop is characterized in that pressure and flow are provided according to the requirement, so that the energy is saved.

Further, the bidirectional balance valve 5 is a 100 liter balance valve, the opening pressure of the bidirectional balance valve 5 is 6Mpa, the cylinder diameter of the clamping cylinder 6 is 80mm, the rod diameter is 40mm, and the clamping state is that the oil is fed by a rod cavity, namely, the rod cavity of the brake cylinder 8 is used as a brake cavity. When the driving part drives the whole monorail anchor hoist to run downhill, the equipment weight is overlarge, the downhill sliding force is approximately 5 tons, the downhill sliding force possibly drags the motor to rotate, the motor is forced to rotate, if the input flow of the driving part is smaller, the inlet pressure of the motor is too low, even negative pressure is generated, the pressure of the clamping cylinder 6 is too low, the friction force between the driving wheel and a rail is lower, and even the driving wheel and the rail are disconnected, so that the equipment can slide down uncontrollably. By adding the two-way balance valve 5, back pressure can be applied to the motor, so that the motor is prevented from being forced to rotate to generate safety accidents.

The bidirectional balance valve 5 uses 100 liters of bidirectional balance valve 5, and by setting proper opening pressure of the bidirectional balance valve 5, such as 6Mpa, the motor inlet has at least the opening pressure of the bidirectional balance valve 5 of 6Mpa, and a clamping cylinder 6 with the cylinder diameter of 80mm and the rod diameter of 40mm is selected, the clamping state is that the rod cavity is filled with oil, the clamping cylinder 6 can generate 2 tons of clamping force by the pressure of 6Mpa, 4 clamping cylinders 6 are arranged in parallel, 8 tons of clamping force can be generated by the clamping cylinder 6, the downward sliding component force of the whole machine gravity is 49.6KN under the climbing angle of 16 degrees, and the phenomenon of skidding of a driving wheel is avoided.

Further, the brake valve 4 comprises a shuttle valve 4a and a pressure reducing valve 4b, high-pressure oil is required to be introduced into the pressure reducing valve 4b through the shuttle valve 4a no matter the monorail crane performs forward operation or backward operation, and the high-pressure oil enters a rod cavity of the clamping cylinder 6 after passing through the pressure reducing valve 4b, so that the driving wheel and the rail are fully clamped. The pressure reducing valve 4b can prevent the excessive driving pressure during the running of the monorail crane from being introduced into the control cavities of the clamping cylinder 6 and the hydraulic control valve 4c, so that the clamping cylinder 6 and the hydraulic control valve 4c are damaged, and the pressure of the pressure reducing valve 4b is set to be 16Mpa. When the pressure is more than 16Mpa, the pressure reducing valve 4b is turned off or closed to reduce the outlet pressure of the pressure reducing valve 4b, so that abnormal abrasion of the driving wheel and service life reduction are avoided.

The opening pressure of the hydraulic control valve 4c is set to be 4Mpa, and when the inlet pressure of the motor of the driving part reaches the set pressure of the hydraulic control valve 4c, the hydraulic control valve 4c is reversed, so that the pressure oil rapidly released by the accumulator 7 enters the rod cavity of the brake cylinder 8. Namely, when the running pressure reaches 4Mpa, the brake is started, and the monorail crane running can be operated. When the set pressure of the hydraulic control valve 4c is too low, the brake cylinder 8 is affected by the back pressure of oil return, the brake pad is in a slightly opened state, the braking force is insufficient, and the abnormal sliding fault can occur; when the set pressure of the hydraulic control valve 4c is too high, the driving part is pressed down when the braking is not released, and once the braking is released, the equipment forward-stroke phenomenon can occur, so that hydraulic impact and equipment damage are caused. The actual measurement shows that the hydraulic control valve 4c has good braking effect when the opening pressure is set to be 4Mpa, and no forward stroke occurs.

The brake cylinder 8 has a cylinder diameter of 80mm, a rod diameter of 40mm and a stroke of 17.6mm, the whole monorail crane is provided with 4 driving parts, each driving part is provided with two brake cylinders 8, the total containing cavity of each brake cylinder 8 is 536ml, and in order to enable the brake cylinders 8 to rapidly release braking, driving operation is matched with braking release, and a driving hydraulic system comprises an energy accumulator 7.

The brake cylinder 8 has a minimum opening pressure of 10Mpa and a maximum operating pressure of 19Mpa. According to the experience of charging the accumulator 7 with nitrogen, p0=0.9xp1=9 Mpa, where P0 is the pre-charge nitrogen pressure in the bladder of the accumulator 7 and P1 is the minimum opening pressure of the brake cylinder 8.

The gear pump 2 charges the accumulator 7 through the charging valve 11, when the charging pressure of the accumulator 7 reaches the set pressure 19Mpa of the charging valve 11, the charging valve 11 unloads the pressure of the gear pump 2 to the oil tank, heat is prevented from being generated due to the fact that the excessive flow is unloaded through the overflow valve after the gear pump 2 is filled with the accumulator 7, the pressure of the accumulator 7 can be reduced after the accumulator 7 continuously releases oil, and when the pressure is reduced to 15Mpa, the charging valve 11 can continuously charge the accumulator 7, and therefore circulation is guaranteed, the gear pump 2 is guaranteed not to cause heat of the excessive oil, and enough pressure oil is guaranteed to brake.

Further, the accumulator 7 uses 10 liters of the leather bag accumulator 7, and according to a calculation formula of the accumulator 7, v0=v/(P0/P1-P0/P2), wherein V0 is 10 liters of the volume of the leather bag accumulator 7, V is the volume of hydraulic oil charged and discharged by the brake cylinder 8 once, and in terms of 530ml, P0 is the pre-charging nitrogen pressure in the leather bag, P1 is the lowest opening pressure of the brake cylinder 8, and under the condition that the brake system loses the brake power, the accumulator 7 serves as auxiliary power and can be continuously operated for 7 times by an operator.

The first operation releases the brake and after release of 530ml of oil from the accumulator 7, the pressure is reduced to p3=17.11 bar.

The second operation releases the brake and after release of 530ml of oil from accumulator 7, the pressure drops to p3= 15.46bar.

The third operation releases the brake and after release of 530ml of oil from accumulator 7, the pressure drops to p3=14.17 bar.

The fourth operation releases the brake, and after the accumulator 7 releases 530ml of oil, the pressure drops to p3=13.07 bar.

The fifth operation releases the brake and after release of 530ml of oil from the accumulator 7, the pressure drops to p3=12.13 bar.

The sixth operation releases the brake and after release of 530ml of oil from the accumulator 7, the pressure drops to p3=11.32 bar.

The seventh operation releases the brake and after release of 530ml of oil from the accumulator 7, the pressure drops to p3=10.61 bar.

The bidirectional balance valve 5 is adopted in the embodiment, so that the sliding of a vehicle can be avoided; the 10L leather bag accumulator 7 is used, so that the brake can be rapidly released during running, the abrasion of a brake pad or the forward flushing during running is avoided, the accumulator 7 is filled with liquid once, the power for releasing the brake can be independently provided for 7 times after the pressure of 19Mpa is reached, the condition that the brake power fails can be effectively treated, and the whole driving hydraulic system is simple in structure and stable.

According to the second embodiment and the first embodiment, the driving hydraulic system further comprises a driving pressure allowing switch 12, when the pressure of the cavity of the brake cylinder 8 rises to a set threshold value, namely to the lowest opening pressure of the brake cylinder 8 by 10Mpa, the driving pressure allowing switch 12 is allowed to detect the ascending pressure and send out a driving allowing signal, and an operator can normally operate the driving control handle to perform driving operation at the moment, so that driving is avoided when braking is not released, namely when a brake pad is not released, and potential safety hazards are reduced.

In a third embodiment, based on the first embodiment, the driving hydraulic system provided by the present disclosure further includes a brake low-pressure alarm pressure switch 13, when the pressure in the cavity of the brake cylinder 8 drops to a set threshold, that is, when the pressure drops from 19Mpa to 10Mpa, the brake low-pressure alarm pressure switch 13 is triggered by the downward pressure, and sends a signal to prompt an operator to overhaul equipment.

In a fourth embodiment, based on the first embodiment, the driving hydraulic system provided in the present disclosure further includes a clamping low-pressure alarm pressure switch 14, when the pressure of the clamping cylinder 6 is lower than a set threshold, that is, the opening pressure of the hydraulic control valve 4c is 4Mpa, the clamping low-pressure alarm pressure switch 14 is triggered, and the switch is controlled in a downlink manner, and the setting of the clamping low-pressure alarm pressure switch 14 is beneficial for an operator to find a fault, or to directly disable driving operation through an internal program of the monorail roof bolter, and to perform emergency braking, so that a slipping or a sliding accident can be avoided.

Fifth embodiment based on the first embodiment, the present disclosure provides a driving hydraulic system, where the brake valve 4 further includes a bypass solenoid valve, and the bypass solenoid valve is connected in parallel with the pilot operated valve 4 c. Normally, oil in the brake cylinder 8 returns to the oil tank through the hydraulic control valve 4c, but the hydraulic control valve 4c may have faults such as valve blocking and non-resetting, so that the equipment cannot brake. The bypass solenoid valve is additionally arranged, and is in a normally open state, so that oil in the brake cylinder 8 can be released, and the reliability of the brake valve 4 is improved.

Furthermore, the bypass electromagnetic valve is an electromagnetic ball valve 4d, the electromagnetic ball valve 4d has better sealing performance relative to the sliding valve, and a certain pressure maintaining effect is achieved on the braking cavity.

Preferably, the driving hydraulic system further comprises a trailer one-way valve 9 and a manual pump 10, wherein the trailer one-way valve 9 is connected with the braking cavity and used for preventing brake oil in the braking cavity from leaking, the manual pump 10 is connected with the trailer one-way valve 9 and used for inputting brake oil into the braking cavity, so that the friction plate is separated from the track, and after the monorail roof-bolter fails, the monorail roof-bolter can be towed away by other vehicles for maintenance.

An embodiment six, based on any one of the embodiments one to five, the disclosure provides a monorail bolter, which includes the monorail bolter driving hydraulic system.

The foregoing disclosure has been presented in a detail description, with specific examples being used herein to illustrate the principles and embodiments of the disclosure, the above examples being provided solely to assist in the understanding of the disclosure and core ideas. It should be noted that it would be apparent to those skilled in the art that various improvements and modifications could be made to the present disclosure without departing from the principles of the present disclosure, and such improvements and modifications would be within the scope of the claims of the present disclosure.

Claims (10)

1. A monorail hanging roof bolter drive hydraulic system which characterized in that: the dual pump unit comprises a variable plunger pump and a gear pump, wherein the driving part comprises a driving part motor, a clamping cylinder and a braking cylinder, an outlet of the plunger pump is connected with the main control valve, an AB port of the main control valve is connected with the braking valve, an outlet of the braking valve is connected with the bidirectional balance valve, an outlet of the bidirectional balance valve is connected with an AB port of the driving part motor, and a C port of the braking valve drives the clamping cylinder to have a rod cavity; the brake valve comprises a shuttle valve, a pressure reducing valve and a hydraulic control valve, wherein the shuttle valve is used for introducing hydraulic oil into the pressure reducing valve, the pressure reducing valve is used for preventing the pressure of a clamping cylinder from being overlarge, the hydraulic control valve is used for enabling brake oil to be rapidly released from an accumulator to the brake cylinder, an outlet of the liquid filling valve is connected with a P port of the brake valve, the liquid filling valve is connected with the accumulator through a one-way valve, the brake cylinder is connected with a brake pad, the clamping cylinder is connected with a driving wheel, and a driving part motor is used for providing power for the driving wheel.

2. A monorail bolter drive hydraulic system according to claim 1, wherein: the driving hydraulic system comprises four driving parts, and the energy accumulator is a 10-liter leather bag energy accumulator.

3. A monorail bolter drive hydraulic system according to claim 1, wherein: the two-way balance valve is a 100 liter two-way balance valve.

4. A monorail bolter drive hydraulic system according to claim 1, wherein: the drive hydraulic system further includes a drive pressure switch.

5. A monorail bolter drive hydraulic system according to claim 1, wherein: the driving hydraulic system further comprises a brake low-pressure alarm pressure switch.

6. A monorail bolter drive hydraulic system according to claim 1, wherein: the drive hydraulic system also includes a clamp low pressure alarm pressure switch.

7. A monorail bolter drive hydraulic system according to claim 1, wherein: the brake valve further comprises a bypass electromagnetic valve which is connected with the hydraulic control valve in parallel.

8. A monorail bolter drive hydraulic system as defined in claim 7, wherein: the bypass solenoid valve is an electromagnetic ball valve.

9. A monorail bolter drive hydraulic system according to claim 1, wherein: the driving hydraulic system further comprises a trailer one-way valve and a manual pump, wherein the trailer one-way valve is connected with the braking cavity and used for preventing the braking oil in the braking cavity from leaking, and the manual pump is connected with the trailer one-way valve and used for inputting the braking oil into the braking cavity.

10. Monorail anchor hanging machine, its characterized in that: a monorail bolter drive hydraulic system comprising any one of claims 1 to 9.