CN204200733U - A kind of rock drilling machine propelling pressure hydraulic pressure far controls loop - Google Patents

A kind of rock drilling machine propelling pressure hydraulic pressure far controls loop Download PDF

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Publication number
CN204200733U
CN204200733U CN201420586891.9U CN201420586891U CN204200733U CN 204200733 U CN204200733 U CN 204200733U CN 201420586891 U CN201420586891 U CN 201420586891U CN 204200733 U CN204200733 U CN 204200733U
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load
propelling
pressure
mouth
valve
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CN201420586891.9U
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王东升
林宏武
徐亮
赵俊波
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Sunward Intelligent Equipment Co Ltd
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Sunward Intelligent Equipment Co Ltd
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Abstract

The utility model discloses a kind of rock drilling machine propelling pressure hydraulic pressure and far control loop, the pressure oil port P of load-reacting pump (1) and the oil inlet P of load sensing multi-way valve (2) ' be connected, the load-sensitive mouth Ls of load-reacting pump (1) is connected with the load-sensitive mouth Ls ' of load-sensitive proportional multi-way valve (2), load-sensitive proportional multi-way valve (2) comprises propelling connection (21), advance the hydraulic fluid port A1 of connection (21), B1 respectively with advance actuator (3) hydraulic fluid port A, B connects, the hydraulic fluid port A1 of connection (21) is advanced to be provided with the responsive outside control mouth LsA1 of individual loads, the responsive outside control mouth LsA1 of individual loads is connected with the filler opening D of relief valve (4), relief valve (4) regulation range comprises propelling pressure regulation range.The utility model be a kind of simple and easy, realize the rock drilling machine propelling pressure hydraulic pressure that propelling pressure hydraulic pressure far controls reliably and far control loop.

Description

A kind of rock drilling machine propelling pressure hydraulic pressure far controls loop
Technical field
The utility model relates to a kind of rock drilling machine self-adaptive hydraulic control loop, especially relates to a kind of rock drilling machine propelling pressure hydraulic pressure and far controls loop.
Background technique
Pneumatic down-the-hole drill, hydraulic top hammer, rotary drill and cutting drill are the mainstream model of rock drilling machine, and propelling action is the key operation action of above-mentioned rock drilling machine, and feeding force control is one of rock drilling machine hydraulic control system key technology.Rock drilling working condition is severe, drilling process is complicated, is embodied in, and under perforate operating mode, needs weak pushing away, to ensure straightness accuracy and the protection drilling tool of perforate; Under the drilling condition of even rock stratum, need to push away by force, enough propelling forces, effectively to play rock drill efficiency, ensure rate of penetration; Under soft rock, pan soil interlayer operating mode, need weak pushing away, with pre-preventing sticking, protection drilling tool, ensure effectively by interlayer geology; Under operating mode such as prominent chance solution cavity, gap etc., need automatically weak pushing away, effectively to pass through solution cavity, gap, and protect drilling tool.Under different working conditions, propelling action need control in certain state, and during various change working, advances and need the conversion of reliable self adaption.It is the basis realizing above-mentioned different operating conditions demand that reliable propelling force far controls oil hydraulic circuit.
Home brands rock drilling machine mostly adopts the oil-feed working connection definite value Decompression Controlling of propulsion motor or oil cylinder, and shortcoming is to there is the larger pressure loss, more difficultly realizes propelling force self adaptive control.Foreign well-known brand Atlase rock drilling machine feeding force control adopts the method for control load-sensitive main pump far away, but main pump is not only given and is advanced oil circuit fuel feeding, simultaneously in parallel to other oil circuit fuel feeding, this just makes the control logic far away of main pump pressure under different oil circuit, different operating mode work complicated, the application of electricity liquid logical function valve block is more, hydraulic system fault inspection and repair technology is difficult to grasp, and maintenance cost is high.Also the imitated foreign brand name rig hydraulic control system phenomenon of trial is there is in domestic rock drilling machine exploitation and trial-manufacturing process, but the complexity of external rock drilling machine oil hydraulic circuit causes that the imitated of electric liquid logical function valve block and system intergration coupling details etc. are very difficult to put in place, restriction overall operation performance and reliability.The technological core of domestic rock drilling machine development concentrates on the lifting of hydraulic control technology, needs simple and easy, the reliable hydraulic control technology adapting to the current hydraulic parts of China and the system matches state of the art.
Model utility content
Technical problem to be solved in the utility model be to provide a kind of simple and easy, realize the rock drilling machine propelling pressure hydraulic pressure that propelling pressure hydraulic pressure far controls reliably and far control loop.
A kind of rock drilling machine propelling pressure hydraulic pressure far controls loop, comprise load-reacting pump, load-sensitive proportional multi-way valve, advance actuator, relief valve and hydraulic oil container, the pressure oil port P of described load-reacting pump and the oil inlet P of described load sensing multi-way valve ' be connected, the load-sensitive mouth Ls of described load-reacting pump is connected with the load-sensitive mouth Ls ' of described load-sensitive proportional multi-way valve, described load-sensitive proportional multi-way valve comprises advancing and joins, the hydraulic fluid port A1 of described propelling connection, B1 respectively with the hydraulic fluid port A of described propelling actuator, B connects, the hydraulic fluid port A1 of described propelling connection is provided with the responsive outside control mouth LsA1 of individual loads, the responsive outside control mouth LsA1 of described individual loads is connected with the filler opening D of relief valve, described relief valve regulation range comprises propelling pressure regulation range.
Differential pressure compensator and load feedback shuttle valve is provided with in described propelling connection, the spool that the load feedback mouth Ls1 of described differential pressure compensator is joined by described propelling is connected with the responsive outside control mouth LsA1 of described individual loads, the load feedback mouth Ls1 of described differential pressure compensator is connected with the first filler opening a of described load feedback shuttle valve, the oil outlet of the load feedback shuttle valve that the second filler opening b of described load feedback shuttle valve joins with other work of described load-sensitive proportional multi-way valve is connected, the oil outlet c of the load feedback shuttle valve of described propelling connection is connected with the load-sensitive mouth Ls ' of described load quick ratio sense multi-way valve, the setting value of described relief valve is successively by the spool of described propelling connection, differential pressure compensator, load feedback shuttle valve, Ls ' the mouth of load-sensitive proportional multi-way valve feeds back to the load-sensitive mouth Ls of described load-reacting pump.
Described relief valve is mechanical adjustment relief valve, or electric proportion adjustment relief valve.
Described propelling actuator is propulsion motor or propelling cylinder.
Adopt the rock drilling machine propelling pressure hydraulic pressure of technique scheme far to control loop, have the following advantages:
1, realize propelling pressure by regulation relief valve and far control adjustment, simple and easy, reliable;
2, by relief valve, the special matched design advancing the individual loads of connection and hydraulic fluid port A1 thereof responsive outside control mouth, differential pressure compensator, load feedback shuttle valve and load-reacting pump, realize the independent control far away of propelling pressure, join with other work and be independent of each other.
In sum, the utility model regulates LsA1 mouth pressure by regulating control relief valve far away, and then control to advance connection hydraulic fluid port A1 delivery pressure by load feedback shuttle valve, differential pressure compensator and load-reacting pump, abandon by advancing working connection definite value Decompression Controlling propelling force or far controlling pump delivery pressure by load electricity liquid logical block and control the technological means of propelling force, thus made control reliable, stable.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of rock drill propelling pressure hydraulic pressure far controls loop, forms propelling pressure hydraulic pressure far control loop by load-reacting pump 1, load-sensitive proportional multi-way valve 2, propelling actuator 3, relief valve 4 and hydraulic oil container 5 etc., load-sensitive proportional multi-way valve 2 comprises propelling connection 21, connection 21 is advanced to have spool, differential pressure compensator 211, load feedback shuttle valve 212, the responsive outside control mouth LsA1 of individual loads of hydraulic fluid port A1 and hydraulic fluid port A1, the load feedback mouth Ls1 of differential pressure compensator 211 is connected by the responsive outside control mouth LsA1 of spool valve body structure and individual loads, the load feedback mouth Ls1 of differential pressure compensator 211 is connected with the first filler opening a of load feedback shuttle valve 212, the oil outlet of the load feedback shuttle valve that the second filler opening b of load feedback shuttle valve 212 joins with another work of load-sensitive proportional multi-way valve 2 is connected, in this example, second filler opening of the load feedback shuttle valve of last a slice work connection of load-sensitive proportional multi-way valve 2 is connected with hydraulic oil container 5, the oil outlet c of connection load feedback shuttle valve 212 is advanced to be connected with the load-sensitive mouth Ls ' of load quick ratio sense multi-way valve 2, hydraulic fluid port A1, B1 of connection 21 is advanced to be connected with advancing hydraulic fluid port A, B of actuator 3 respectively, actuator 3 is advanced to be propulsion motor or propelling cylinder, the responsive outside control mouth LsA1 of individual loads is connected with the filler opening D of relief valve 4, the oil return inlet T of relief valve 4 is connected with hydraulic oil container 5, relief valve 4 is mechanical adjustment relief valves, or electric proportion adjustment relief valve.The pressure oil port P of load-reacting pump 1 and the oil inlet P of load sensing multi-way valve ' be connected, the load-sensitive mouth Ls of load-reacting pump 1 is connected with the load-sensitive mouth Ls ' of load-sensitive proportional multi-way valve 2, and the inlet port of load-reacting pump 1, the return opening of load-sensitive proportional multi-way valve 2 are all connected with hydraulic oil container 5.
Advance connection 21 spool flow with rated flow needed for satisfied propelling actuator 3 for criterion, relief valve 4 pressure range is to comprise the highest propelling pressure needed for propelling action and minimum propelling pressure for criterion; The setting value of regulation relief valve 4, time between the highest propelling pressure and minimum propelling pressure, propelling pressure far controls setting by relief valve 4.
Two kinds of operating modes are divided to specifically describe mode of execution of the present utility model below.
Define herein, advance the action when hydraulic fluid port A oil-feed of actuator 3, hydraulic fluid port B oil return to be that lower promotion is done, otherwise propose action on being.
1, only connection work is advanced
When only advancing connection work, the setting value of relief valve 4 is successively by advancing the Ls ' mouth of the spool valve body structure of connection 21, differential pressure compensator 211, load feedback shuttle valve 212, load-sensitive proportional multi-way valve 2 to feed back to the load-sensitive mouth Ls of load-reacting pump 1, the outlet pressure of load-reacting pump 1 is adapted to the setting value of relief valve 4, and then controls the setting value that propulsion motor propelling pressure is adapted to relief valve 4.
2, advance connection and other work to join to work simultaneously
When advancing connection 21 and other work joins to work, if the working pressure that other work joins is lower than relief valve 4 setting value, then working procedure is with described in above-mentioned 1 step simultaneously; If the working pressure of other work connection is higher than relief valve 4 pressure set points, then maximum pressure work connection working pressure feeds back to the load-sensitive mouth Ls of load-reacting pump 1 by the load feedback shuttle valve of each of load-sensitive proportional multi-way valve 2, and the delivery pressure of load-reacting pump 1 is adapted to maximum pressure work connection working pressure; Advance connection 21 differential pressure compensator 211 under the setting value acting in conjunction of maximum pressure work connection working pressure and relief valve 4, differential pressure compensator 211 is communicated with oil-feed connection and advances the oil-feed valve port of connection 21 to turn down, produce certain pressure difference compensation, thus control to advance the working pressure of connection 21 hydraulic fluid port A1 to be adapted to the setting value of relief valve 4, do not affect by other work connection working pressure, also do not affect other work connection working pressure.
The utility model is by relief valve 4, the matched design advancing the responsive outside control mouth LsA1 of the individual loads of connection 21 and hydraulic fluid port A1 thereof, differential pressure compensator 211, load feedback shuttle valve 212 and load-reacting pump 2, realize the independent control far away of propelling pressure, join with other work and be independent of each other.

Claims (4)

1. a rock drilling machine propelling pressure hydraulic pressure far controls loop, comprise load-reacting pump (1), load-sensitive proportional multi-way valve (2), advance actuator (3), relief valve (4) and hydraulic oil container (5), it is characterized in that: the pressure oil port P of described load-reacting pump (1) and the oil inlet P of described load sensing multi-way valve (2) ' be connected, the load-sensitive mouth Ls of described load-reacting pump (1) is connected with the load-sensitive mouth Ls ' of described load-sensitive proportional multi-way valve (2), described load-sensitive proportional multi-way valve (2) comprises propelling connection (21), the hydraulic fluid port A1 of described propelling connection (21), B1 respectively with the hydraulic fluid port A of described propelling actuator (3), B connects, the hydraulic fluid port A1 of described propelling connection (21) is provided with the responsive outside control mouth LsA1 of individual loads, the responsive outside control mouth LsA1 of described individual loads is connected with the filler opening D of relief valve (4), described relief valve (4) regulation range comprises propelling pressure regulation range.
2. rock drilling machine propelling pressure hydraulic pressure according to claim 1 far controls loop, it is characterized in that: in described propelling connection (21), be provided with differential pressure compensator (211) and load feedback shuttle valve (212), the load feedback mouth Ls1 of described differential pressure compensator (211) is connected with the responsive outside control mouth LsA1 of described individual loads by the spool of described propelling connection (21), the load feedback mouth Ls1 of described differential pressure compensator (211) is connected with the first filler opening a of described load feedback shuttle valve (212), the oil outlet of the load feedback shuttle valve that the second filler opening b of described load feedback shuttle valve (212) joins with other work of described load-sensitive proportional multi-way valve (2) is connected, the oil outlet c of load feedback shuttle valve (212) of described propelling connection (21) is connected with the load-sensitive mouth Ls ' of described load quick ratio sense multi-way valve (2), the setting value of described relief valve (4) is successively by the spool of described propelling connection (21), differential pressure compensator (211), load feedback shuttle valve (212), Ls ' the mouth of load-sensitive proportional multi-way valve (2) feeds back to the load-sensitive mouth Ls of described load-reacting pump (1).
3. rock drilling machine propelling pressure hydraulic pressure according to claim 1 and 2 far controls loop, it is characterized in that: described relief valve (4) is mechanical adjustment relief valve, or electric proportion adjustment relief valve.
4. rock drilling machine propelling pressure hydraulic pressure according to claim 1 and 2 far controls loop, it is characterized in that: described propelling actuator (3) is propulsion motor or propelling cylinder.
CN201420586891.9U 2014-10-11 2014-10-11 A kind of rock drilling machine propelling pressure hydraulic pressure far controls loop Active CN204200733U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332967A (en) * 2015-12-11 2016-02-17 重庆纳川山隅重工设备有限公司 Self-adaptive valve bank for rock drilling machine
CN107339277A (en) * 2017-08-31 2017-11-10 雷沃重工股份有限公司 A kind of tractor load-sensitive formula banked direction control valves
CN111627284A (en) * 2020-06-08 2020-09-04 湖南翰坤实业有限公司 VR-based children earthquake safety education simulation system and method
CN113027843A (en) * 2021-04-14 2021-06-25 中煤科工集团重庆研究院有限公司 Load-sensitive synchronous regulation hydraulic lifting system for drilling machine
CN113404735A (en) * 2021-06-22 2021-09-17 中煤科工集团重庆研究院有限公司 Load-sensitive hydraulic system for adjusting inclination angle of drilling machine and working method of load-sensitive hydraulic system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332967A (en) * 2015-12-11 2016-02-17 重庆纳川山隅重工设备有限公司 Self-adaptive valve bank for rock drilling machine
CN107339277A (en) * 2017-08-31 2017-11-10 雷沃重工股份有限公司 A kind of tractor load-sensitive formula banked direction control valves
CN111627284A (en) * 2020-06-08 2020-09-04 湖南翰坤实业有限公司 VR-based children earthquake safety education simulation system and method
CN113027843A (en) * 2021-04-14 2021-06-25 中煤科工集团重庆研究院有限公司 Load-sensitive synchronous regulation hydraulic lifting system for drilling machine
CN113404735A (en) * 2021-06-22 2021-09-17 中煤科工集团重庆研究院有限公司 Load-sensitive hydraulic system for adjusting inclination angle of drilling machine and working method of load-sensitive hydraulic system

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