CN102966612B - Hydraulic control system for mining full-hydraulic underground drill - Google Patents
Hydraulic control system for mining full-hydraulic underground drill Download PDFInfo
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- CN102966612B CN102966612B CN201210503070.XA CN201210503070A CN102966612B CN 102966612 B CN102966612 B CN 102966612B CN 201210503070 A CN201210503070 A CN 201210503070A CN 102966612 B CN102966612 B CN 102966612B
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Abstract
The invention discloses a hydraulic control system for a mining full-hydraulic underground drill and belongs to the technical field of underground drill equipment. The hydraulic control system comprises a plunger pump, a multi-way reversing valve, a first pressure gauge, a second pressure gauge, a two-way hydraulic lock, a slope regulating oil cylinder, a rotary motor, a shuttle valve, a boosting oil way control block, a boosting oil cylinder, a holder, a one-way hydraulic lock, a chuck and a cooler. The hydraulic control system adopts a load sensitivity technique, the efficiency of the control system is improved, the problems that the control is lagged, the control precision is lower, and the system heating is severe are solved, and the energy-saving effect is good; the hydraulic control system adopts the load-sensitive manual proportional reversing valve, the control precision of the control system is improved, and the operation is simple and convenient; with the adoption of the boosting oil way control block, the drilling scope of a drill is extended, the problem that the drill skids when drilling at a large inclination angle is effectively solved, and the drilling safety is improved; and the holder and the chuck are combined and rotate reversely for automatically dismounting a drilling rod, the labor intensity for dismounting the drilling rod is reduced, and the working efficiency is improved.
Description
Technical field
Patent of the present invention relates to underground drill rig equipment technical field, particularly a kind of hydraulic control system of mining all-hydraulic tunnel drilling rig.
Background technique
Mining all-hydraulic tunnel drilling rig is to be exclusively used in the drilling equipment of holing in underground passage, is mainly used in the underground gas that creeps into and takes out (row) discharge hole, the anti-fire extinguishing of slip casting hole, coal-bed flooding hole, protrusion-dispelling pressure relief vent, geologic prospecting hole and other engineering hole.Mining all-hydraulic tunnel drilling rig is mainly comprised of pumping plant, operating table, unit head, mounting, clamp holder, column, drilling tool etc.
Current mining all-hydraulic tunnel drilling rig mainly adopts quantitative or manual variable control system, and control unit mainly adopts common multiple directional control valve, has the problems such as control hysteresis, control accuracy is lower, system heating is serious, efficiency is lower.And rig, when carrying out the creeping into of wide-angle pitching hole, has skidding during unit head, have potential safety hazard; Dismounting drilling rod mainly relies on artificial unloading, and labor intensity is large, inefficiency.
Summary of the invention
In view of this, the object of this invention is to provide a kind of mining all-hydraulic tunnel drilling rig hydraulic control system, the shortcoming existing to solve the control system of existing all-hydraulic tunnel drilling rig.
All-hydraulic tunnel drilling rig hydraulic control system that the present invention is mining, comprises fuel tank, plunger pump, multiple directional control valve, the first pressure gauge, the second pressure gauge, bidirectional hydraulic lock, oblique adjusting oil cylinder, revolution motor, shuttle valve, advance oil circuit controll block, propelling cylinder, clamp holder, one-way hydraulic lock, chuck and cooler, described fuel tank is connected with the S mouth of plunger pump, the P mouth of described plunger pump is connected with the P mouth of multiple directional control valve, the X mouth of described plunger pump is connected with the LS mouth of multiple directional control valve, the first M mouth of described multiple directional control valve is connected with the first pressure gauge, first of described multiple directional control valve is connected with revolution motor, the first A1 of described multiple directional control valve is connected with the import of shuttle valve with B1 mouth, the outlet of described shuttle valve is connected with the 5-linked A5 mouth of multiple directional control valve, first B1 mouth of described multiple directional control valve is connected with advancing the E mouth of oil circuit controll block, second of described multiple directional control valve is connected with advancing oil circuit controll block, described propelling oil circuit controll block is connected with propelling cylinder, the 3rd M2 mouth of described multiple directional control valve is connected with the second pressure gauge, the tetrad of described multiple directional control valve is connected with clamp holder, the 5-linked of described multiple directional control valve is connected with chuck, the first R mouth of described multiple directional control valve is connected with cooler, described cooler is connected with fuel tank.
Further, described multiple directional control valve comprises safety valve, filter, the first main control valve, the first compensator, the second main control valve, the second compensator, A2 mouth LS relief valve, B2 mouth LS relief valve, tetrad main control valve, tetrad compensator, A4 mouth LS relief valve, B4 mouth LS relief valve, 5-linked main control valve, tetrad compensator, A5 mouth LS relief valve, B5 mouth LS relief valve, 5-linked LS shuttle valve, tetrad LS shuttle valve, the second LS shuttle valve, the first LS shuttle valve; The first main control valve of described multiple directional control valve and the second main control valve are three ten threeway proportional reversing valves of band friction location, the tetrad main control valve of multiple directional control valve and 5-linked main control valve are three ten threeway proportional reversing valves with spring position, the first main control valve of described multiple directional control valve, the second main control valve and tetrad main control valve Median Function are Y type, and the Median Function of the 5-linked main control valve of multiple directional control valve is O type.
Further, described propelling oil circuit controll block comprises the first damper, the second damper, the first relief valve, the second relief valve, the first one-way valve, the second one-way valve, sequence valve, the 3rd damper, the 4th damper and 2/2-way pilot operated directional control valve; Described the first damper, the second damper, the first relief valve, the second relief valve, the first one-way valve, the second one-way valve connect to form Bidirectional balanced valve with the A21/B21 hydraulic fluid port of propelling oil circuit controll block; Advance the reversion oil circuit of oil circuit controll block 12 to control oil through the control chamber of the 3rd damper, sequence valve introducing 2/2-way pilot operated directional control valve, simultaneously control chamber signal oil sump tank after the leakage oil of the 4th damper and sequence valve converges; The oil inlet and outlet of described 2/2-way pilot operated directional control valve is connected with B22 hydraulic fluid port with advancing the A22 of oil circuit controll block respectively.
Further, described plunger pump is variable displacement pump, and described multiple directional control valve is the manual proportional reversing valve of load-sensitive.
Further, between the main control valve of described revolution motor, propelling cylinder, clamp holder, one-way hydraulic lock and chuck and multiple directional control valve, pipeline is connected with quick release coupling, and oblique adjusting oil cylinder and clamp holder share the tetrad main control valve of multiple directional control valve.
Beneficial effect of the present invention: all-hydraulic tunnel drilling rig hydraulic control system that the present invention is mining, by aforementioned techniques scheme, has obtained following technique effect:
1, the present invention adopts load-sensitive technology, has improved the efficiency of control system, has solved the problems such as control hysteresis, control accuracy is lower, system heating is serious, and has had good energy-saving effect.
2, the present invention adopts the manual proportional reversing valve of load-sensitive, has improved the control accuracy of control system, simple to operation.
3, the propelling oil circuit controll block that the present invention adopts, has improved the scope of creeping into of rig, and has efficiently solved the skid problem of rig when large inclined angle creeps into, and has improved the Security of creeping into.
4, the present invention adopts clamp holder and chuck in conjunction with reversion, to carry out the technology of automatic dismantling drilling rod, has reduced drilling rod dismounting labor intensity, has improved working efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the mining all-hydraulic tunnel drilling rig hydraulic control system of the present invention;
Fig. 2 is the schematic diagram of multiple directional control valve in Fig. 1;
Fig. 3 is the schematic diagram that advances oil circuit controll block in Fig. 1.
In Fig. 1: 1. fuel tank, 2. oil suction coarse-grain filtering device, 3. plunger pump, 4. the first high pressure fine filter, 17. second high pressure fine filters, 5. multiple directional control valve, 6. the first pressure gauge, 7. the second pressure gauge, 8. bidirectional hydraulic lock, 9. oblique adjusting oil cylinder, 10. revolution motor, 11. shuttle valves, 12. advance oil circuit controll block, 13. propelling cylinders, 14. clamp holders, 15. one-way hydraulic locks, 16. chucks, 18. rapid pipe joints, 19. coolers, 20. oil return fine filters.
In Fig. 2: 51. safety valves, 52. filters, 53. first main control valves, 54. first compensators, 55. second main control valves, 56. second compensators, 57.A2 mouthful LS relief valve, 58.B2 mouthful LS relief valve, 59. tetrad main control valve, 510. tetrad compensators, 511.A4 mouth LS relief valve, 512.B4 mouth LS relief valve, 513. 5-linked main control valves, 516. 5-linked compensators, 515.A5 mouth LS relief valve, 514.B5 mouth LS relief valve, 517. 5-linked LS shuttle valve, 518. tetrad LS shuttle valve, 519. the second LS shuttle valve, 520. the first LS shuttle valve.
In Fig. 3: 120. first dampers, 121. second dampers, 124. the 3rd dampers, 126. the 4th dampers, 122. first relief valves, 129. second relief valves, 123. first one-way valves, 128. second one-way valves, 125. sequence valves, 127. 2/2-way pilot operated directional control valves.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in the figure, all-hydraulic tunnel drilling rig hydraulic control system that the present embodiment is mining, comprises fuel tank 1, oil suction coarse-grain filtering device 2, plunger pump 3, the first high pressure fine filter 4, the second high pressure fine filter 17, multiple directional control valve 5, the first pressure gauge 6, the second pressure gauge 7, bidirectional hydraulic lock 8, oblique adjusting oil cylinder 9, revolution motor 10, shuttle valve 11, advance oil circuit controll block 12, propelling cylinder 13, clamp holder 14, one-way hydraulic lock 15, chuck 16, cooler 19 and oil return fine filter 20, described fuel tank 1 is connected with oil suction coarse-grain filtering device 2, described oil suction coarse-grain filtering device 2 is connected with the S mouth of plunger pump 3, the P mouth of described plunger pump 3 is connected with high pressure fine filter 4, described high pressure fine filter 4 is connected with the P mouth of multiple directional control valve 5, the X mouth of described plunger pump 3 is connected with the LS mouth of multiple directional control valve 5, the first M mouth of described multiple directional control valve 5 is connected with the first pressure gauge 6, first of described multiple directional control valve 5 is connected with revolution motor 10, the first A1 of described multiple directional control valve 5 is connected with the import of shuttle valve 11 with B1 mouth, the outlet of described shuttle valve 11 is connected with the 5-linked A5 mouth of multiple directional control valve 5, first B1 mouth of described multiple directional control valve 5 is connected with advancing the E mouth of oil circuit controll block 12, second of described multiple directional control valve 5 is connected with advancing oil circuit controll block 12, described propelling oil circuit controll block 12 is connected with propelling cylinder 13, the 3rd M2 mouth of described multiple directional control valve 5 is connected with the second pressure gauge 7, the tetrad of described multiple directional control valve 5 is connected with clamp holder 14, the 5-linked of described multiple directional control valve 5 is connected with chuck 16, the first R mouth of described multiple directional control valve 5 is connected with cooler 19, described cooler 19 is connected with oil return fine filter 20, described oil return fine filter 20 is connected with fuel tank 1.
Oil suction coarse-grain filtering device 2, the first high pressure fine filter 4, the second high pressure fine filter 17 and the oil return fine filter 20 arranging in the present embodiment can guarantee the turbidity test of hydraulic oil, can extend lifetime of system.
All-hydraulic tunnel drilling rig hydraulic control system that the present embodiment is mining, has adopted load-sensitive technology, has improved the efficiency of control system, and has good energy-saving effect; Also adopt in addition clamp holder and chuck in conjunction with reversion, to carry out the technology of automatic dismantling drilling rod, reduced labor intensity, improved working efficiency.
In the present embodiment, described multiple directional control valve 5 comprises safety valve 51, filter 52, the first main control valve 53, the first compensator 54, the second main control valve 55, the second compensator 56, A2 mouth LS relief valve 57, B2 mouth LS relief valve 58, tetrad main control valve 59, tetrad compensator 510, A4 mouth LS relief valve 511, B4 mouth LS relief valve 512, 5-linked main control valve 513, 5-linked compensator 516, A5 mouth LS relief valve 515, B5 mouth LS relief valve 514, 5-linked LS shuttle valve 517, tetrad LS shuttle valve 518, the second LS shuttle valve 519, the first LS shuttle valve 520, three ten threeway proportional reversing valves that the first main control valve 53 of described multiple directional control valve 5 and the second main control valve 55 are band friction location, the tetrad main control valve 59 of multiple directional control valve 5 and 5-linked main control valve 513 are three ten threeway proportional reversing valves with spring position, the first main control valve 53, the second main control valve 55 and tetrad main control valve 59 Median Functions of described multiple directional control valve 5 are Y type, and the Median Function of the 5-linked main control valve 513 of multiple directional control valve 5 is O type, this structure multiple directional control valve 5 functional reliabilities are good, easy to operate.
As the improvement to the present embodiment, described propelling oil circuit controll block 12 comprises the first damper 120, the second damper 121, the first relief valve 122, the second relief valve 129, the first one-way valve 123, the second one-way valve 128, sequence valve 125, the 3rd damper 124, the 4th damper 126 and 2/2-way pilot operated directional control valve 127; Described the first damper 120, the second damper 121, the first relief valve 122, the second relief valve 129, the first one-way valve 123, the second one-way valve 128 connect to form Bidirectional balanced valve with advancing the A21/B21 hydraulic fluid port of oil circuit controll block 12, the reversion oil circuit of propelling oil circuit controll block 12 is controlled oil and through the 3rd damper 124, sequence valve 125, is introduced the control chamber of 2/2-way pilot operated directional control valves 127, simultaneously control chamber signal oil sump tank after the leakage oil of the 4th damper 126 and sequence valve 125 converges; The oil inlet and outlet of described 2/2-way pilot operated directional control valve 127 is connected with B22 hydraulic fluid port with advancing the A22 of oil circuit controll block 12 respectively; This structure advances oil circuit controll block, has improved the scope of creeping into of rig, and has efficiently solved the skid problem of rig when large inclined angle creeps into, and has improved the Security of creeping into.
As the improvement to the present embodiment, described plunger pump 3 is variable displacement pump, and control mode is that power is controlled, band pressure cut off and load sensing, and described multiple directional control valve 5 is the manual proportional reversing valve of load-sensitive; Improved the control accuracy of control system, made operation more simple and convenient.
As the improvement to the present embodiment, between the main control valve of described revolution motor 10, propelling cylinder 13, clamp holder 14, one-way hydraulic lock 15 and chuck 16 and multiple directional control valve 5, pipeline is connected with quick release coupling 18, oblique adjusting oil cylinder 9 and clamp holder 14 share the tetrad main control valve of multiple directional control valve 5, have simplified system architecture and annexation.
Lower mask body is introduced the working principle of this mining all-hydraulic tunnel drilling rig hydraulic control system:
As shown in Figure 1, the present embodiment all-hydraulic tunnel drilling rig hydraulic control system, the low pressure oil that described plunger pump 3 sucks in fuel tank 1 through oil suction coarse-grain filtering device 2, output high pressure oil enters multiple directional control valve 5 through high pressure fine filter 4, the oil return of multiple directional control valve 5 is got back in fuel tank 1 through cooler 19 and oil return fine filter 20, the load feedback signal oil of multiple directional control valve 5 is connected with the X mouth of plunger pump 3, the second pressure gauge 7 indication unit head propelling pressures, the first pressure gauge 6 indication unit heads rotations and retreat, clamp holder 14 and chuck 16 pressure.Multiple directional control valve 5 is controlled valve block by head and the tail connection and 5-linked and is formed, and the first linkage control valve sheet and revolution motor 10 form unit head rotary control circuit, control unit head forward, stop and reversing; The second linkage control valve sheet forms unit head propelling loop with advancing oil circuit controll block 12 and propelling cylinder 13, controls unit head and advances, stops and retreating; Relief valve 58 in the 3rd linkage control valve sheet advances oil circuit B mouth to be connected to form pressure-control circuit with unit head, regulates the propelling pressure of unit head propelling cylinder 13; Tetrad is controlled valve block and clamp holder 14 and one-way hydraulic lock 15 and is formed clamp holder control loop, control clamping, the meta of clamp holder 14 and unclamp, simultaneously tetrad is controlled valve block and is formed oblique adjusting oil cylinder control loops with bidirectional hydraulic lock 8 and oblique adjusting oil cylinder 9, the rising of control oblique adjusting oil cylinder 9, stops and declining; 5-linked is controlled valve block and chuck 16 and one-way hydraulic lock and is formed chuck control loop, controls clamping, the meta of chuck 16 and unclamps.
Standby operating mode, after actuating motor, the low pressure oil that plunger pump 3 sucks in fuel tank 1 through oil suction coarse-grain filtering device 2, output high pressure oil enters multiple directional control valve 5 through high pressure fine filter 4, now the operating grip of multiple directional control valve 5 is without any action, high-pressure oil passage interrupts, the load feedback signal oil of multiple directional control valve 5 enters the X mouth of plunger pump 3, make the swashplate angle of plunger pump 3 in minimum state, the rate of discharge of plunger pump 3 is only its internal leakage, make the energy loss under standby operating mode drop to minimum, there is good energy-saving effect.
Dip angle of hole is adjusted operating mode, 1. A4, the B4 oil circuit of the tetrad of multiple directional control valve 5 being controlled to valve block are connected with oblique adjusting oil cylinder loop by quick release coupling 18,2. operate tetrad and control the Joystick of valve block, multiple directional control valve 5 mesohigh oil enter oblique adjusting oil cylinder 9 through A4/B4 mouth and fluid lock 8, regulate borer frame angle, thereby realize the adjustment of dip angle of hole.
Drilling condition, 1. the tetrad of multiple directional control valve 5 is controlled to the A4 of valve block, B4 oil circuit is connected with clamp holder 14 by quick release coupling 18, 2. operate the Joystick of tetrad control valve block in unclamping position, multiple directional control valve 5 mesohigh oil are opened one-way hydraulic lock 15 through B4 mouth, clamp holder 14 pressure release under the effect of dish spring, clamp holder unclamps, 3. operate the Joystick of tetrad control valve block in meta, pack drilling rod into chuck and clamp holder, 5. operate Joystick that the 5-linked of multiple directional control valve 5 controls valve block in clamping position, multiple directional control valve 5 mesohigh oil are through A5 mouth, high pressure fine filter 17 and one-way hydraulic lock enter chuck 16, make chuck in clamped condition, the Joystick that operates 5-linked control valve block is returned to meta, 6. operate the Joystick of the first linkage control valve sheet of multiple directional control valve 5 in positive transposition, multiple directional control valve 5 mesohigh oil divide two-way through A1 mouth, one road pressure oil enters revolution motor 10, revolution motor 10 starts forward, another road pressure oil is through shuttle valve 11, high pressure fine filter 17 and one-way hydraulic lock enter chuck 16, make chuck 16 all the time in clamped condition, 7. operate the Joystick of the second linkage control valve sheet of multiple directional control valve 5 in advanced potential, multiple directional control valve 5 mesohigh oil enter the B21 mouth that advances oil circuit controll block 12 through B2 mouth, open the second individual event valve 128, enter the rod chamber of propelling cylinder 13, the A2 mouth that relief valve 122 is got back to multiple directional control valve 5 is opened in the oil return of rodless cavity, unit head is advanced, thereby realize drilling operation, after a rod boring is complete, can add new drilling rod at unit head afterbody, repeating above operation can realize continuously and creeping into.
Move back driller's condition, after creeping into and putting in place, stop advancing, now revolution motor is still in forward state, 1. the Joystick that operates the second linkage control valve sheet in after give up the throne, multiple directional control valve 5 mesohigh oil enter the A21 mouth that advances oil circuit controll block 12 through A2 mouth, open the first individual event valve 123, enter the rodless cavity of propelling cylinder 13, the B2 mouth that relief valve 129 is got back to multiple directional control valve 5 is opened in the oil return of rod chamber, making unit head chuck clamp drilling rod retreats, 2. after retreating and putting in place, the Joystick that the 5-linked of operation multiple directional control valve 5 is controlled valve block is in unclamping position, multiple directional control valve 5 mesohigh oil are opened one-way hydraulic lock pressure release through B5 mouth makes chuck 16 in releasing orientation, the Joystick that operates 5-linked control valve block is returned to meta, 3. operate the Joystick of the second linkage control valve sheet of multiple directional control valve 5 in advanced potential, unit head unclamps drilling rod and advances separately, after advancing and putting in place, 4. operate Joystick that the 5-linked of multiple directional control valve 5 controls valve block in clamping position, 5. operate multiple directional control valve 5 the second linkage control valve sheet Joystick in after give up the throne, making chuck clamp drilling rod draws back, after exiting a drilling rod, while making two tool joints between clamp holder and chuck, 6. operate Joystick that the tetrad of multiple directional control valve 5 controls valve block in clamping position, now clamp holder 14 and chuck 16 are all in clamped condition, 7. operate the Joystick of the first linkage control valve sheet of multiple directional control valve 5 in reversion position, B1 mouth high pressure oil is divided into two-way, one road high pressure oil is through the 3rd damper 124, opening sequence valve 125, make 2/2-way pilot operated directional control valve 127 overcome spring force commutation, propelling cylinder 13 is in floating bit, another road high-pressure oil flow is to revolution motor 10, make revolution motor reversion, the connecting thread of two drilling rods comes loose, realize automatic dismantling drilling rod function.Repeat above action dismounting drilling rod continuously, realize and move back brill.
Finally explanation is, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technological scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. a mining all-hydraulic tunnel drilling rig hydraulic control system, comprise fuel tank (1), plunger pump (3), multiple directional control valve (5), the first pressure gauge (6), the second pressure gauge (7), bidirectional hydraulic lock (8), oblique adjusting oil cylinder (9), revolution motor (10), shuttle valve (11), advance oil circuit controll block (12), propelling cylinder (13), clamp holder (14), one-way hydraulic lock (15), chuck (16) and cooler (19), it is characterized in that: described fuel tank (1) is connected with the S mouth of plunger pump (3), the P mouth of described plunger pump (3) is connected with the P mouth of multiple directional control valve (5), the X mouth of described plunger pump (3) is connected with the LS mouth of multiple directional control valve (5), the first M mouth of described multiple directional control valve (5) is connected with the first pressure gauge (6), first of described multiple directional control valve (5) is connected with revolution motor (10), the first A1 of described multiple directional control valve (5) is connected with the import of shuttle valve (11) with B1 mouth, the outlet of described shuttle valve (11) is connected with the 5-linked A5 mouth of multiple directional control valve (5), first B1 mouth of described multiple directional control valve (5) is connected with advancing the E mouth of oil circuit controll block (12), second of described multiple directional control valve (5) is connected with advancing oil circuit controll block (12), described propelling oil circuit controll block (12) is connected with propelling cylinder (13), the 3rd M2 mouth of described multiple directional control valve (5) is connected with the second pressure gauge (7), the tetrad of described multiple directional control valve (5) is connected with clamp holder (14), the 5-linked of described multiple directional control valve (5) is connected with chuck (16), the first R mouth of described multiple directional control valve (5) is connected with cooler (19), described cooler (19) is connected with fuel tank (1),
Described S mouth is inlet port, and described P mouth is oil inlet and outlet, and described X mouth is control port, described LS mouth is load-sensitive hydraulic fluid port, and described M mouth, M2 mouth are pressure measurement hydraulic fluid port, and described A1, B1, A5 mouth are oil inlet and outlet, described E mouth is control port, and described R mouth is return opening.
2. mining all-hydraulic tunnel drilling rig hydraulic control system according to claim 1, it is characterized in that: described multiple directional control valve (5) comprises safety valve (51), filter (52), the first main control valve (53), the first compensator (54), the second main control valve (55), the second compensator (56), A2 mouth LS relief valve (57), B2 mouth LS relief valve (58), tetrad main control valve (59), tetrad compensator (510), A4 mouth LS relief valve (511), B4 mouth LS relief valve (512), 5-linked main control valve (513), 5-linked compensator (516), A5 mouth LS relief valve (515), B5 mouth LS relief valve (514), 5-linked LS shuttle valve (517), tetrad LS shuttle valve (518), the second LS shuttle valve (519), the first LS shuttle valve (520), first main control valve (53) of described multiple directional control valve (5) and the second main control valve (55) are three ten threeway proportional reversing valves of band friction location, the tetrad main control valve (59) of multiple directional control valve (5) and 5-linked main control valve (513) are three ten threeway proportional reversing valves with spring position, first main control valve (53) of described multiple directional control valve (5), the second main control valve (55) and tetrad main control valve (59) Median Function are Y type, and the Median Function of the 5-linked main control valve (513) of multiple directional control valve (5) is O type,
Described A2 mouth, B2 mouth, A4 mouth, B4 mouth, A5 mouth, B5 mouth are the oil inlet and outlet of multiple directional control valve (5).
3. mining all-hydraulic tunnel drilling rig hydraulic control system according to claim 1, is characterized in that: described propelling oil circuit controll block (12) comprises the first damper (120), the second damper (121), the first relief valve (122), the second relief valve (129), the first one-way valve (123), the second one-way valve (128), sequence valve (125), the 3rd damper (124), the 4th damper (126) and 2/2-way pilot operated directional control valve (127); Described the first damper (120), the second damper (121), the first relief valve (122), the second relief valve (129), the first one-way valve (123), the second one-way valve (128) connect to form Bidirectional balanced valve with the A21/B21 hydraulic fluid port of propelling oil circuit controll block (12); The reversion oil circuit of propelling oil circuit controll block (12) is controlled oil and through the 3rd damper (124), sequence valve (125), is introduced the control chamber of 2/2-way pilot operated directional control valve (127), simultaneously control chamber signal oil sump tank after the leakage oil of the 4th damper (126) and sequence valve (125) converges; The oil inlet and outlet of described 2/2-way pilot operated directional control valve (127) is connected with B22 hydraulic fluid port with advancing the A22 of oil circuit controll block (12) respectively;
Described A21 hydraulic fluid port, B21 hydraulic fluid port, A22 hydraulic fluid port and B22 hydraulic fluid port are for advancing the oil inlet and outlet of oil circuit controll block (12).
4. mining all-hydraulic tunnel drilling rig hydraulic control system according to claim 1, is characterized in that: described plunger pump (3) is variable displacement pump, and described multiple directional control valve (5) is the manual proportional reversing valve of load-sensitive.
5. mining all-hydraulic tunnel drilling rig hydraulic control system according to claim 1, it is characterized in that: between the main control valve of described revolution motor (10), propelling cylinder (13), clamp holder (14), one-way hydraulic lock (15) and chuck (16) and multiple directional control valve (5), for pipeline, quick release coupling (18) is connected, oblique adjusting oil cylinder (9) and clamp holder (14) share the tetrad main control valve of multiple directional control valve (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210503070.XA CN102966612B (en) | 2012-11-30 | 2012-11-30 | Hydraulic control system for mining full-hydraulic underground drill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210503070.XA CN102966612B (en) | 2012-11-30 | 2012-11-30 | Hydraulic control system for mining full-hydraulic underground drill |
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| CN102966612A CN102966612A (en) | 2013-03-13 |
| CN102966612B true CN102966612B (en) | 2014-12-10 |
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| CN201210503070.XA Expired - Fee Related CN102966612B (en) | 2012-11-30 | 2012-11-30 | Hydraulic control system for mining full-hydraulic underground drill |
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