CN202348253U - Drilling action logic control circuit of hydraulic rock drill - Google Patents

Drilling action logic control circuit of hydraulic rock drill Download PDF

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Publication number
CN202348253U
CN202348253U CN 201120459068 CN201120459068U CN202348253U CN 202348253 U CN202348253 U CN 202348253U CN 201120459068 CN201120459068 CN 201120459068 CN 201120459068 U CN201120459068 U CN 201120459068U CN 202348253 U CN202348253 U CN 202348253U
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CN
China
Prior art keywords
valve
pressure
pilot operated
operated directional
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN 201120459068
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Chinese (zh)
Inventor
王东升
刘鹏
赵宏强
曾素
林宏武
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Sunward Intelligent Equipment Co Ltd
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Sunward Intelligent Equipment Co Ltd
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Publication date
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Priority to CN 201120459068 priority Critical patent/CN202348253U/en
Application granted granted Critical
Publication of CN202348253U publication Critical patent/CN202348253U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model relates to a drilling action logic control circuit of a hydraulic rock drill. A first hydraulically controlled reversing valve, a first pressure relief valve, a second pressure relief valve, a second hydraulically controlled reversing valve and an overflow valve or a speed control valve constitute a logic control circuit for controlling two-stage pressure propulsion by a rotation pressure and for controlling low pressure impact by low pressure propulsion; and a second hydraulically controlled reversing valve, an overflow valve or a speed control valve constitutes a logic control circuit for controlling two-stage impact pressure by propulsion pressure, and a hydraulically controlled reversing valve constitutes a logic control circuit for controlling propulsion lifting by a rotation pressure. The drilling action logic control circuit provided by the utility model realizes automatic matching and compound logic control of impact, rotation and propulsion three key drilling actions of the rock drill, and improves the adaptability and the reliability of the drilling work of the rock drill.

Description

Hydraulic rock drilling machine rock drilling action logic control loop
Technical field
The utility model relates to a kind of hydraulic rock drilling machine rock drilling action compound logic control loop, relates in particular to the compound logic control loop that a kind of hydraulic rock drilling machine is realized impact, revolution, three rock drilling key operations of propelling.
Background technology
Hydraulic rock drilling machine is because of it is efficient, energy-saving advantages is widely used in the rock drilling bore operation.Rock drilling bore operation operating mode is abominable, complicated, is embodied in to different rock kind and hardness, impacts, turns round, advances three rock drilling key operations to need good controllability; Complicated geologicals such as the solution cavity in the adaptation rock stratum, crack, interlayer impact, turn round, advance three rock drilling key operations and coupling thereof to possess automatic logic control, and automatic anti-aircraft is beaten, the anti-sticking pricker.
Small-sized digging machine total power throttle system serves as typical case's representative with Japanese KYB system, PSVD series main pump, KVSE series main valve.Main pump is the coaxial pump group of total power tetrad, and P1, P2 pump are for being total to the swash plate plunger variable pump, and the P3 pump is a gear pump, and the P4 pump is the blade pioneer pump, and the output pressure of P1, P2, P3 pump feeds back to the swash plate stroking mechanism of P1, P2 pump simultaneously; Main valve is a composite throttling speed governing main valve.Based on the hydraulic rock drilling machine of small-sized digging machine platform and total power throttling hydraulic system exploitation,, at present domesticly successfully put out a new product and good application and development prospect are arranged because of advantages such as it are simple, flexible, efficient, energy-conservation.But its remain problem be rock drilling boring poor reliability, bad adaptability, bit shank fracture, drill steel fracture appear, bit freezing can't be used bottleneck through interlayer geology etc., seriously restrict the application and the popularization of this new product.Small-sized digging machine total power throttling hydraulic system applications is in the control hydraulic gate; Be merely able to realize impacting, turn round, advancing the independence and the unadjustable control of three rock drilling key operations, can not realize automatic coupling, the compound logic control of three rock drilling key operations.
The utility model content
To the problems referred to above; The purpose of the utility model provides a kind of hydraulic rock drilling machine rock drilling action logic control loop; Realization impacts, turns round, advances the automatic coupling of three rock drilling key operations, compound logic to control to rock drilling machine, improves the compliance and the reliability of rock drilling bore operation.
For solving the problems of the technologies described above; The utility model provides a kind of hydraulic rock drilling machine rock drilling action logic control loop; Comprise that constituting rotation pressure by first pilot operated directional control valve, first reducing valve, second reducing valve, second pilot operated directional control valve, overflow valve or flow speed control valve controls the propelling of two stage pressures; Low pressure advances control low pressure to impact loop control logic simultaneously, and rotation pressure is introduced loop control logic through the rotation pressure signal port, advances oil-feed to introduce loop control logic through advancing oil-in; By advancing oil-out to draw the logic control control loop, impact by-pass shunt and introduce loop control logic by impacting the shunting oil-in; Rotation pressure is controlled first pilot operated directional control valve; First pilot operated directional control valve switching-over pressure is set at and is lower than hammer drill bit freezing critical pressure; First pilot operated directional control valve is controlled the opening and closing of first reducing valve and second reducing valve; First reducing valve is the control of low pressure propelling pressure, and second reducing valve is normal rock drilling propelling pressure control, thereby realizes that rotation pressure logic control two stage pressures advance; Propelling pressure is controlled second pilot operated directional control valve; The switching-over pressure of said second pilot operated directional control valve is higher than the setting pressure of first reducing valve; And be lower than the setting pressure of second reducing valve; Second pilot operated directional control valve is controlled said overflow valve or flow speed control valve, and the overflow that said overflow valve or flow speed control valve control low pressure are impacted is opened, thereby realization low pressure promotion logic control low pressure is impacted; Constitute propelling pressure control two-stage surge loop control logic by second pilot operated directional control valve, overflow valve or flow speed control valve; Impact by-pass shunt and introduce loop control logic by impacting shunting oil-in I; Advance load pressure to control second pilot operated directional control valve, second pilot operated directional control valve control overflow valve or flow speed control valve impact for the normal pressure rock drilling when overflow valve or flow speed control valve are closed; Overflow valve or flow speed control valve are that low pressure is impacted when opening, thereby realize propelling pressure logic control two-stage surge; Constituting rotation pressure control by the 3rd pilot operated directional control valve advances and carries loop control logic; Advance guide oil route guide oil oil-in to introduce loop control logic, draw loop control logic by the guide oil oil-out, rotation pressure is controlled said the 3rd pilot operated directional control valve; The 3rd pilot operated directional control valve switching-over pressure is set at hammer drill bit freezing critical pressure; Thereby realize advancing the switching-over of guide's oil circuit, when rotation pressure reached setting value, rock drilling advanced action to convert into and proposes action.
Further, said the 3rd pilot operated directional control valve control advances the switching-over of guide's oil circuit or propelling working connection.
Further, said the 3rd pilot operated directional control valve is two-position four-way pilot operated directional control valve or the valve group be made up of 3 two-position three way pilot operated directional control valves.
Said low pressure propelling/impact should be regarded as relative concept; Normal propelling/surge according to hammer drill manufacturer different rock-layers that recommendation adapts to; Be converted into the propelling/surge in the corresponding hydraulic system; Be regarded as normal propelling/surge, this moment, advanced state was regarded as normal propelling/impact conditions; With respect to normal propelling/impact,, be regarded as the described low pressure propelling/surge of this patent for adapting to other operating modes occur in the rock drilling process propelling/surge less than normal propelling/surge.
The utlity model has following advantage: realize the automatic logic control of propelling pressure control surge, effectively air defense is beaten; Realize that rotation pressure control advances the automatic logic control of proposing, effectively anti-bit freezing; Realize that automatic logic control two stage pressures of rotation pressure advance, low pressure advances control low pressure to impact simultaneously, improves through the ability of interlayer geology with the prevention bit freezing.Can adapt to different rock behavio(u)r and the automatic logic controls of geology and rush in, turn round, advance three rock drilling key operations compositive relations, effective air defense is beaten, the anti-sticking pricker, thereby improves drilling efficiency, adaptive capacity and the reliability of hydraulic rock drilling machine.
Description of drawings
Fig. 1 is the structural representation of embodiment one loop control logic;
Fig. 2 is the structural representation of embodiment two loop control logics;
Fig. 3 is embodiment one loop control logic utilization structure sketch map on hydraulic rock drilling machine.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation:
Embodiment one as shown in figures 1 and 3 constitutes rotation pressure by pilot operated directional control valve 1, reducing valve 2.1, reducing valve 2.2, pilot operated directional control valve 3, overflow valve 4 and controls the propelling of two stage pressures, and low pressure advances control low pressure to impact loop control logic simultaneously; Constitute propelling pressure control height two-stage surge loop control logic by pilot operated directional control valve 3, overflow valve 4; Constituting rotation pressure control by two-position four-way pilot operated directional control valve 5 advances and carries loop control logic.
Rotation pressure is introduced rock drilling action logic controll block by the revolution working connection through hydraulic fluid port R, advance oil-feed by hydraulic fluid port F through the rock drilling logic control block to hydraulic fluid port F1, surge is drawn oil to hydraulic fluid port I by the working connection bypass.Pilot operated directional control valve 1 switching-over pressure is usually less than critical pressure according to revolution bit freezing controlling board critical pressure setting; Reducing valve 2.1 is the control of low pressure propelling pressure, and reducing valve 2.2 is normal rock drilling propelling pressure control; Pilot operated directional control valve 3 is that control is played in air defense, and its switching-over pressure is lower than reducing valve 2.2 setting pressures, and is higher than reducing valve 2.1 setting pressures; Overflow valve 4 opening pressures are set at hammer drill surge downscale protection value.When rotation pressure is lower than the switching-over pressure set points of pilot operated directional control valve 1; Pilot operated directional control valve 1 is in normal position; Reducing valve 2.1 cuts out, and reducing valve 2.2 is opened, and the pilot operated directional control valve 3 of propelling pressure control simultaneously is in position, a left side; Overflow valve 4 cuts out, and propelling pressure and surge are in normal rock drilling job state; When rotation pressure is higher than the switching-over pressure set points of pilot operated directional control valve 1, pilot operated directional control valve 1 switching-over, reducing valve 2.1 is opened; Reducing valve 2.2 cuts out; Control pilot operated directional control valve 3 simultaneously and be in right position, overflow valve 4 is opened, and the rock drilling action is in the prevention bit freezing state that low pressure advances, low pressure is impacted.
Advance load pressure to cause rock drilling action logic controll block by hydraulic fluid port F1; Pilot operated directional control valve 3 act as implements propelling pressure control impact impulse force, and its switching-over pressure is set and is lower than normal rock drilling propelling pressure control valve reducing valve 2.2 pressure set points, and is higher than low pressure propelling pressure control valve reducing valve 2.1 pressure set points.When advancing load pressure greater than pilot operated directional control valve 3 switching-over pressure, pilot operated directional control valve 3 is in position, a left side, and overflow valve 4 cuts out, and surge is in normal rock drilling job state; When advancing load pressure to be lower than the setting pressure of hydraulicdirectional control valve 3, pilot operated directional control valve 3 is in right position, and overflow valve 4 is opened, and the rock drilling action is in the air defense that low pressure advances, low pressure is impacted and beats state.
Advance guide oil route guide oil oil-in Fa1, Fb1 to cause rock drilling action logic controll block, cause main valve by guide oil oil-out Fa2, Fb2 and advance control to join the guide.Two-position four-way pilot operated directional control valve 5 switching-over pressure are set at the threshold of hammer drill bit freezing rotation pressure.When the revolution load pressure was lower than the switching-over pressure set points of pilot operated directional control valve 5, pilot operated directional control valve 5 was in normal position, and rock drilling action logic controll block does not change the propelling handle main valve is advanced the control that joins, and the rock drilling action is in normal operation condition; When the revolution load pressure is higher than the switching-over pressure set points of two-position four-way pilot operated directional control valve 5, pilot operated directional control valve 5 switching-overs, control advances the switching-over of guide's oil circuit, advances action to switch to and proposes action, and this logical action is an anti-sticking driller condition.
Embodiment two shown in Figure 2, with overflow valve in the flow speed control valve alternate embodiment one, flow speed control valve substitutes the function that overflow valve realizes impacting by-pass shunt; 5 controls advance the working connection switching-over to substitute the technical scheme of propelling control guide oil circuit switching-over for the 3rd pilot operated directional control valve, realize the function that the propelling action turns to through the oil circuit switching-over; Replace to the technical scheme of the valve group that 5.0,5.1,5.2 3 two-position three way pilot operated directional control valves as shown in Figure 2 form by the two-position four-way pilot operated directional control valve with the 3rd pilot operated directional control valve 5; For a person skilled in the art; On the technology contents that the utility model discloses, need not to pay extra creative work, can realize its function; And achieve the desired result, be not described in detail in this.
The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, the conversion of being made all should be included within the protection domain of the utility model.

Claims (3)

1. hydraulic rock drilling machine rock drilling action logic control loop; Comprise that constituting rotation pressure by first pilot operated directional control valve (1), first reducing valve (2.1), second reducing valve (2.2), second pilot operated directional control valve (3), overflow valve or flow speed control valve (4) controls the propelling of two stage pressures; Low pressure advances control low pressure to impact loop control logic simultaneously; Rotation pressure is controlled said first pilot operated directional control valve (1); First pilot operated directional control valve (1) switching-over pressure is set at and is lower than hammer drill bit freezing critical pressure, the open and close of first pilot operated directional control valve (1) control first reducing valve (2.1) and second reducing valve (2.2), and said first reducing valve (2.1) is the control of low pressure propelling pressure; Said second reducing valve (2.2) is normal rock drilling propelling pressure control, thereby realizes that rotation pressure logic control two stage pressures advance; Propelling pressure is controlled second pilot operated directional control valve (3); The switching-over pressure of said second pilot operated directional control valve (3) is higher than the setting pressure of first reducing valve (2.1); And be lower than the setting pressure of second reducing valve (2.2); Second pilot operated directional control valve (3) said overflow valve of control or flow speed control valve (4), overflow valve or flow speed control valve (4) control low pressure is impacted the unlatching of overflow, thus realization low pressure promotion logic control low pressure is impacted; Constitute propelling pressure control two-stage surge loop control logic by second pilot operated directional control valve (3), overflow valve or flow speed control valve (4); Advance load pressure to control second pilot operated directional control valve (3); Second pilot operated directional control valve (3) control overflow valve or flow speed control valve (4); Overflow valve or flow speed control valve (4) are that normal rock drilling is impacted when closing, and overflow valve or flow speed control valve (4) are that low pressure is impacted when opening, thereby realize propelling pressure logic control two-stage surge; By carrying loop control logic in the 3rd pilot operated directional control valve (5) the formation rotation pressure control propelling; Rotation pressure is controlled the 3rd pilot operated directional control valve (5); Said the 3rd pilot operated directional control valve (5) switching-over pressure is set at hammer drill bit freezing critical pressure; Thereby realize advancing the switching-over of guide's oil circuit, when rotation pressure reached setting value, rock drilling advanced action to convert into and proposes action.
2. according to the said hydraulic rock drilling machine rock drilling of claim 1 action logic control loop, it is characterized in that: said the 3rd pilot operated directional control valve (5) control advances guide's oil circuit or advances the switching-over of working connection.
3. according to claim 1 or 2 said hydraulic rock drilling machine rock drilling action logic control loops, it is characterized in that: said the 3rd pilot operated directional control valve (5) is two-position four-way pilot operated directional control valve or the valve group be made up of 3 two-position three way pilot operated directional control valves.
CN 201120459068 2011-11-18 2011-11-18 Drilling action logic control circuit of hydraulic rock drill Withdrawn - After Issue CN202348253U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120459068 CN202348253U (en) 2011-11-18 2011-11-18 Drilling action logic control circuit of hydraulic rock drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120459068 CN202348253U (en) 2011-11-18 2011-11-18 Drilling action logic control circuit of hydraulic rock drill

Publications (1)

Publication Number Publication Date
CN202348253U true CN202348253U (en) 2012-07-25

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CN 201120459068 Withdrawn - After Issue CN202348253U (en) 2011-11-18 2011-11-18 Drilling action logic control circuit of hydraulic rock drill

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383778A (en) * 2011-11-18 2012-03-21 山河智能装备股份有限公司 Logic control loop for rock drilling operations of hydraulic rock drilling machine
CN104595264A (en) * 2015-01-29 2015-05-06 江苏鑫蓮液压机电有限公司 Hydraulic drilling machine controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383778A (en) * 2011-11-18 2012-03-21 山河智能装备股份有限公司 Logic control loop for rock drilling operations of hydraulic rock drilling machine
CN102383778B (en) * 2011-11-18 2014-05-28 山河智能装备股份有限公司 Logic control loop for rock drilling operations of hydraulic rock drilling machine
CN104595264A (en) * 2015-01-29 2015-05-06 江苏鑫蓮液压机电有限公司 Hydraulic drilling machine controller
CN104595264B (en) * 2015-01-29 2017-01-25 江苏鑫蓮液压机电有限公司 hydraulic drilling machine controller

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20120725

Effective date of abandoning: 20140528

RGAV Abandon patent right to avoid regrant