CN101748969B - Hydraulic control loop used for jackdrill and control system thereof - Google Patents
Hydraulic control loop used for jackdrill and control system thereof Download PDFInfo
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- CN101748969B CN101748969B CN2009102600080A CN200910260008A CN101748969B CN 101748969 B CN101748969 B CN 101748969B CN 2009102600080 A CN2009102600080 A CN 2009102600080A CN 200910260008 A CN200910260008 A CN 200910260008A CN 101748969 B CN101748969 B CN 101748969B
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Abstract
The invention relates to the technical field of jackdrill and discloses a hydraulic control loop used for jackdrill and control system thereof. The hydraulic control loop used for jackdrill includes a hydraulic pump, a drill rod thrust cylinder, a drill rod spin motor, a solenoid directional valve, a directional valve, an unloading valve and a sequence valve. In the hydraulic control loop used for jackdrill provided by the invention, control valves needing controlling all adopt solenoid valves, and the reversing or flux control of the control valves can be realized by transmitting solenoid control signals to the solenoid valves, and the operation staff do not heed to directly operate the control valves; therefore, the work intensity of the operation staff is smaller, the control performance is good and the defect of inaccurate locating and punching of manual operation can be overcome. One hydraulic pump can simultaneously supply oil to the drill rod thrust cylinder and the jackdrill, can simultaneously implement two motions including boosting and drilling, thus reducing the manufacture cost of the jackdrill. The invention also provides a control system for hydraulic control loop used for jackdrill.
Description
Technical field
The present invention relates to the rock drilling machinery technical field, relate in particular to a kind of hammer drill and use hydraulic control circuit, the invention still further relates to a kind of hammer drill and use the hydraulic control circuit control system.
Background technology
Hammer drill is a kind of plant equipment that is used for rock-boring, and in the tunnelling process of colliery, black and sub-terrain mines such as coloured, hammer drill is being played the part of crucial role, in realizing rock gangway mechanized process, plays an important role.Hammer drill can be divided into air rock drill, diesel rock frill, electric rock drill and hydraulic gate etc. by its power resources.
Hydraulic gate is a kind of hammer drill of using always, and hydraulic gate mainly is by hydraulic pump power to be provided, and its executing agency carries out corresponding actions through hydraulic control circuit control.Below hammer drill in the prior art is carried out brief account with hydraulic control circuit.
Please referring to Fig. 1, Fig. 1 be in the prior art a kind of hammer drill with the principle schematic of hydraulic control circuit.
As shown in Figure 1, this hammer drill comprises that with hydraulic control circuit the first hydraulic pump 1-1, the second hydraulic pump 1-2, manual multiple-way valve 2, drill steel advance oil cylinder 3, choke valve 4, dash valve 5, sequence valve 6, unloader 7, unloader control port 7-1, progressively perforating valve 8, hammer drill 9, drill steel rotation motor.
The oil-out of Main Hydraulic Pump 1-1 connects the oil-in of manual multiple-way valve 2; Two oil-outs of manual multiple-way valve 2 connect rod chamber and the rodless cavity that drill steel advances oil cylinder 3 respectively; Establish choke valve 4 on the rodless cavity of drill steel propelling oil cylinder 3 and the oil circuit between the manual multiple-way valve 2; Drill steel advances the rodless cavity of oil cylinder 3 to be communicated with the oil-in of perforating valve 8 progressively, progressively the oil-out of perforating valve 8 connection hammer drill 9; Unloader 7 is connected progressively perforating valve 8 and drill steel and advances on the oil circuit between the rodless cavity of oil cylinder 3, and the unloader control port 7-1 of unloader 7 connects the drill steel rotation motor; The oil-in of sequence valve 6 is connected drill steel and advances on the rodless cavity of oil cylinder 3 and the oil circuit between the perforating valve 8 progressively, the control port of the oil-out connection dash valve 5 of sequence valve 6; The oil-out of the second hydraulic pump 1-2 connects the oil-in of dash valve 5, and the oil-out of dash valve 5 connects the progressively oil-in of perforating valve 8; The oil-out of the second hydraulic pump 1-2 is also drawn oil circuit a and oil circuit b respectively, and oil circuit a is used to connect the drill boom compensating cylinder, and oil circuit b is used to connect other executive components.
Manual multiple-way valve 2 is pushed the left side to, and the fluid of first hydraulic pump 1-1 output gets into the rodless cavity that drill steel advances oil cylinder 3, and drill steel advances oil cylinder 3 to begin to advance; Fluid gets in the hammer drill 9 through perforating valve progressively 8 simultaneously, and manual work promotes the progressively handle of perforating valve 8, little at a slow speed impact earlier; Propulsive force raises after bore bit gets into rock; When system pressure surpassed the setting pressure of sequence valve 6, sequence valve 6 was opened, the control port that control oil gets into dash valve 5 through sequence valve 6; Make dash valve 5 switching-over, the fluid of second hydraulic pump 1-2 output is through dash valve 5, progressively perforating valve 8 gets in the hammer drill.
When bore bit fully gets into rock, confirm not have deflection when dangerous, push the handle of perforating valve 8 progressively to high pressure, beginning rock drilling operation.
When card pricker phenomenon occurring; The drill steel rotational resistance increases; Cause the pressure of drill steel rotation motor to rise, when pressure is increased to the set pressure of unloader 7, unloader 7 is opened from the control oil that the drill steel rotation motor comes; Drill steel advances the rodless cavity of oil cylinder 3 through unloader 7 unexpected releases, and bore bit advances oil cylinder 3 to stop to advance; Reset under sequence valve 6 effect of portion's spring within it simultaneously, dash valve 5 switching-overs, the fluid of second hydraulic pump 1-2 output will no longer get into hammer drill 9, and hammer drill 9 stops to impact; Wait to fix a breakdown, restart work again.
When propelling stroke was reached home, hammer drill impacted and stops automatically; Push manual multiple-way valve 2 to right side, first hydraulic pump 1-1 output fluid gets into the rod chamber that drill steel pushes away oil cylinder 3 through manual multiple-way valve 2, and drill steel advances oil cylinder 3 to return, and accomplishes an operation cycle.
Above-mentioned hammer drill is with in the hydraulic control circuit, the adjusting of the oil liquid pressure of hammer drill need of work, all the time through manual operation progressively perforating valve 8 accomplish; When propelling and rock drilling are impacted; The oil liquid pressure fluctuation is bigger, and labor intensity of operating staff is bigger, and handling is relatively poor; Owing to adopt manually-operated, the stability during hammer drill work can not get guaranteeing that during the perforating of location, the precision of location perforating is lower; Because need manual operation progressively perforating valve 8 and manual multiple-way valve 2, operating personnel can only be at the enterprising line operate of machine, hammer drill vibratory impulse when work is big and working environment is more abominable, with the personal safety that influences operating personnel.
In addition; Above-mentioned hammer drill is with in the hydraulic control circuit, and a hydraulic pump can not be realized the composite move of a plurality of executing agencies, can only be through increasing hydraulic pump; Could realize that a plurality of executing agencies carry out composite move; As in order to realize advancing and rock drilling is moved simultaneously, adopted two hydraulic pumps, increase hydraulic pump more and make that the manufacturing cost of hammer drill is higher.
Summary of the invention
An object of the present invention is to provide a kind of hammer drill and use hydraulic control circuit, operating personnel do not need manual direct control control valve, and labor intensity of operating staff is less, and handling is better, and perforating accuracy in location is higher.
Another object of the present invention provides a kind of hammer drill and uses the hydraulic control circuit control system; Use the hydraulic control circuit control system through this hammer drill; Operating personnel can carry out corresponding actions by long-distance remote control operation hammer drill; Operating personnel do not need to have ensured operating personnel's personal safety at the enterprising line operate of hammer drill machine.
In order to realize above-mentioned first purpose, the invention provides a kind of hammer drill and use hydraulic control circuit, comprise that hydraulic pump, drill steel advance oil cylinder, drill steel rotation motor, hammer drill, also comprise solenoid operated directional valve, the 3rd reversal valve, unloader, sequence valve;
The oil-out of said hydraulic pump connects the oil-in of said solenoid operated directional valve, and first oil-out of said solenoid operated directional valve connects the rodless cavity that said drill steel advances oil cylinder, and second oil-out of said solenoid operated directional valve connects the rod chamber that said drill steel advances oil cylinder;
The oil-out of said hydraulic pump connects the oil-in of said the 3rd reversal valve, and the oil-out of said the 3rd reversal valve connects said hammer drill;
Said drill steel advances the rodless cavity of oil cylinder to be communicated with the oil-in of said unloader, and the oil-out of said unloader is communicated with fuel tank, and the control port of said unloader is connected with said drill steel rotation motor;
The oil-in of said sequence valve is connected said drill steel and advances on the rodless cavity and the oil circuit between the said unloader of oil cylinder, and the oil-out of said sequence valve connects the control port of said the 3rd reversal valve.
Preferably; Oil circuit between the oil-out of said hydraulic pump and the said solenoid operated directional valve is provided with first pressure compensator; The oil-in of said first pressure compensator is communicated with the oil-out of said hydraulic pump, and the oil-out of said first pressure compensator is communicated with the oil-in of said solenoid operated directional valve.
Preferably, the control end of said first pressure compensator connects the oil-in of first reversal valve, and two oil-outs of first reversal valve connect the first different overflow valve of set pressure, second overflow valve respectively.
Preferably; Hydraulic fluid port between the oil-out of said hydraulic pump and said the 3rd reversal valve is provided with second pressure compensator; The oil-in of said second pressure compensator is communicated with the oil-out of said hydraulic pump, and the oil-out of said second pressure compensator is communicated with the oil-in of said the 3rd reversal valve.
Preferably, the control end of said second pressure compensator connects the oil-in of second reversal valve, and two oil-outs of second reversal valve connect the 3rd different overflow valve of set pressure, the 4th overflow valve respectively.
Preferably, said hydraulic pump is the variable pump with load-sensitive function.
Preferably, also comprise the shuttle valve and first one way valve, two oil-ins of said shuttle valve are communicated with first oil-out, second oil-out of said solenoid operated directional valve respectively, and the oil-out of said shuttle valve connects the LS mouth of said hydraulic pump through said first one way valve.
Preferably, on the oil circuit between said the 3rd reversal valve and the said hammer drill, draw a pressure feedback branch road, this pressure feedback branch road connects the LS mouth of said hydraulic pump through second one way valve.
Preferably, on the oil circuit between said the 3rd reversal valve and the said hammer drill, draw a branch road and be connected the drill boom compensating cylinder.
Hammer drill provided by the invention is with in the hydraulic control circuit; The control valve that need control all adopts electromagnetic valve, through sending electromagnetic control signal to these electromagnetic valves, just can realize the switching-over or the flow-control of above-mentioned control valve; Operating personnel do not need manual direct control control valve; Labor intensity of operating staff is less, and handling is good, can overcome the coarse defective of manually-operated location perforating.Hydraulic pump can advance oil cylinder, hammer drill fuel feeding simultaneously to drill steel, can advance simultaneously, two actions of rock drilling, has reduced the manufacturing cost of hammer drill.
In order to realize above-mentioned second purpose, the present invention also provides a kind of hammer drill to use the hydraulic circuit control system, remote control transmitter, receiver of remote-control sytem, master controller, and above-mentioned hammer drill is used hydraulic control circuit;
Said remote control transmitter is used for the wireless transmit operation instruction signal;
Said receiver of remote-control sytem is used to receive said operation instruction signal, and said operation instruction signal is sent to said master controller;
Master controller is used to receive the operation instruction signal that said receiver of remote-control sytem sends, and controls said hammer drill and carry out corresponding actions with the electromagnetic valve of hydraulic control circuit.
Preferably, said electromagnetic valve comprises said solenoid operated directional valve, said first reversal valve, said second reversal valve.
Preferably, said solenoid operated directional valve is solenoid-operated proportional reversal valve or explosion-proof solenoid valve.
Hammer drill provided by the invention comprises remote control transmitter, receiver of remote-control sytem, master controller with the hydraulic control circuit control system, and above-mentioned hammer drill is used hydraulic control circuit.Operating personnel are through the various operation instruction signals of remote control transmitter wireless transmit; The receiver of remote-control sytem that is positioned at the electric control box of hammer drill receives the operation instruction signal of remote control transmitter emission; And this operation instruction signal is sent to master controller; Master controller is according to received operation instruction signal, and the control hammer drill carries out corresponding actions with the solenoid operated directional valve of hydraulic control circuit.Use the hydraulic control circuit control system through this hammer drill, operating personnel can carry out corresponding actions by long-distance remote control operation hammer drill, and operating personnel do not need to have ensured operating personnel's personal safety at the enterprising line operate of hammer drill machine.
Description of drawings
Fig. 1 be in the prior art a kind of hammer drill with the principle schematic of hydraulic control circuit;
Fig. 2 is the principle schematic of hammer drill provided by the present invention with a kind of specific embodiment of hydraulic control circuit;
Fig. 3 is the frame construction sketch map of hammer drill provided by the present invention with the hydraulic control circuit control system;
Wherein, among Fig. 1-Fig. 3:
The first hydraulic pump 1-1, the second hydraulic pump 1-2, manual multiple-way valve 2, drill steel advance oil cylinder 3, choke valve 4, dash valve 5, sequence valve 6, unloader 7, unloader control port 7-1, progressively perforating valve 8, hammer drill 9;
Remote control transmitter 31, receiver of remote-control sytem 32, master controller 33, electromagnetic valve 34, executing agency 35.
The specific embodiment
Below in conjunction with accompanying drawing content of the present invention is described, following description only is exemplary and indicative, should any restriction not arranged to protection scope of the present invention.
Please referring to Fig. 2, Fig. 2 is the principle schematic of hammer drill provided by the present invention with a kind of specific embodiment of hydraulic control circuit.
As shown in Figure 2, hammer drill provided by the invention comprises that with hydraulic control circuit hydraulic pump 10, drill steel advance oil cylinder 11, hammer drill 12, drill steel rotation motor, solenoid operated directional valve 13, the 3rd reversal valve 14, unloader 15, sequence valve 16.Wherein, the drill steel rotation motor fails to show in the drawings.
The oil-out of hydraulic pump 10 connects the oil-in of solenoid operated directional valve 13, and first oil-out of solenoid operated directional valve 13 connects the rodless cavity that drill steel advances oil cylinder 11, and second oil-out of solenoid operated directional valve 13 connects the rod chamber that drill steel advances oil cylinder 11; The oil-out of hydraulic pump 10 also connects the oil-in of the 3rd reversal valve 14, and the oil-out of the 3rd reversal valve 14 connects hammer drill 12; Drill steel advances the rodless cavity of oil cylinder 11 to be communicated with the oil-in of unloader 15, and the oil-out of unloader 15 is communicated with fuel tank, and the control port X of unloader 15 is connected with the drill steel rotation motor; The oil-in of sequence valve 16 is connected drill steel and advances on the rodless cavity and the oil circuit between the unloader 15 of oil cylinder 11, and the oil-out of sequence valve 16 connects the control port of the 3rd reversal valve 14.
In the preferred version; In order to guarantee of the safety of whole hammer drill with hydraulic control circuit; The oil-out place of hydraulic pump 10 is provided with overflow valve 23, and the oil-in of overflow valve 23 is connected on the oil circuit between hydraulic pump 10 and the solenoid operated directional valve 13, and the oil-out of overflow valve 23 connects fuel tank; When system pressure reaches the set pressure of overflow valve 23, overflow valve 23 will be opened.
In a kind of concrete embodiment, solenoid operated directional valve 13 can adopt solenoid-operated proportional reversal valve or explosion-proof solenoid valve.
In the preferred version; When drill steel advances oil cylinder 11 work; Do not receive the influence of load variations for the fltting speed that guarantees drill steel; The oil-in that oil circuit between the oil-out of hydraulic pump 10 and the solenoid operated directional valve 13 is provided with first pressure compensator, 17, the first pressure compensators 17 is communicated with the oil-out of hydraulic pump 10, and the oil-out of first pressure compensator 17 is communicated with the oil-in of solenoid operated directional valve 13.The effect of first pressure compensator 17 is equivalent to a uniform-pressure-drop valve, can guarantee that the pressure reduction of solenoid operated directional valve 13 restrictions is steady state value, thereby makes the fltting speed of drill steel not receive the influence of load variations.
Further in the scheme; In order to make drill steel advance oil cylinder 11 to have low and higher two kinds of fltting speeds; Improve the degree of regulation of the oil liquid pressure of the rodless cavity that gets into drill steel propelling oil cylinder 11; The control end of first pressure compensator 17 connects the oil-in of the first reversal valve 19-1; Two oil-outs of the first reversal valve 19-1 connect the first different overflow valve 20-1 of set pressure, the second overflow valve 20-2 respectively, and first pressure compensator 17, the first reversal valve 19-1, the first overflow valve 20-1, the second overflow valve 20-2 constitute two pressure circuits.In the preferred version, the first reversal valve 19-1 can adopt solenoid operated directional valve.
The set pressure of supposing first overflow valve 20-1 set pressure lower, the second overflow valve 20-2 is higher; When drill steel advances oil cylinder 11 to advance at a slow speed or drill steel when advancing oil cylinder 11 to need pressure low; First reversal valve 19-1 switching-over makes the overflow valve 20-1 that wins be communicated with first pressure compensator 17; If when drill steel advanced oil cylinder 11 to need propelling fast or drill steel to advance oil cylinder 11 to need elevated pressures, first reversal valve 19-1 switching-over made the second overflow valve 20-2 be communicated with first pressure compensator 17.
In the preferred version; During hammer drill 12 work; In order to guarantee that hammer drill 12 has stable operating pressure; The oil-in that oil circuit between the oil-out of hydraulic pump 10 and the 3rd reversal valve 14 is provided with second pressure compensator, 18, the second pressure compensators 18 is communicated with the oil-out of hydraulic pump 10, and the oil-out of second pressure compensator 18 is communicated with the oil-in of the 3rd reversal valve 14.The effect of second pressure compensator 18 is equivalent to a uniform-pressure-drop valve, can guarantee that the pressure reduction of the 3rd reversal valve 14 restrictions is steady state value, thereby makes card hammer drill 12 have stable operating pressure.
Further in the scheme; In order to make hammer drill 12 have low and higher two kinds of operating pressures; The control end of second pressure compensator 18 connects the oil-in of the second reversal valve 19-2; Two oil-outs of the second reversal valve 19-2 connect the 3rd different overflow valve 20-3 of set pressure, the 4th overflow valve 20-4 respectively, and second pressure compensator 18, the second reversal valve 19-2, the 3rd overflow valve 20-3, the 4th overflow valve 20-4 constitute two pressure circuits.In the preferred version, the second reversal valve 19-2 can adopt solenoid operated directional valve.
The set pressure of supposing the 3rd overflow valve 20-3 set pressure lower, the 4th overflow valve 20-4 is higher, and when hammer drill 12 needed operating pressure low, second reversal valve 19-2 switching-over made the 3rd overflow valve 20-3 be communicated with second pressure compensator 18; If when hammer drill 12 needed higher operating pressure, second reversal valve 19-2 switching-over made the 4th overflow valve 20-4 be communicated with second pressure compensator 18.
In the preferred version; In order to realize that a hydraulic pump lets a plurality of executing agencies accurately carry out composite move; The control accuracy of raising system; Hydraulic pump 10 adopts the variable pump with load-sensitive function, and hydraulic pump 10 is formed the load-sensitive loop with shuttle valve 21, the first one way valve 22-1, the second one way valve 22-2.Two oil-ins of shuttle valve 21 are communicated with first oil-out, second oil-out of solenoid operated directional valve 13 respectively, and the oil-out of shuttle valve 21 connects the LS mouth (the LS mouth refers to load-sensitive control mouth) of hydraulic pump 10 through the first one way valve 22-1; On the oil circuit between the 3rd reversal valve 14 and the hammer drill 12, draw a pressure feedback branch road, this pressure feedback branch road connects the LS mouth of hydraulic pump 10 through the second one way valve 22-2.
The size of the operating pressure of hydraulic pump 10 comparison drill steels propelling oil cylinders 11 and the operating pressure of hammer drill 12; Output and the fluid that is complementary than big operating pressure; Can satisfy drill steel and advance all ability operate as normal of oil cylinder 11, hammer drill 12, hydraulic pump 10 can let drill steel advance oil cylinder 11, hammer drill 12 accurately to carry out composite move like this, improves the control accuracy of system; And hydraulic pump 10 power attenuations of this structure are lower, and operating efficiency is higher.
Further in the scheme, draw a branch road on the oil circuit between the 3rd reversal valve 14 and the hammer drill 12, this branch road can connect drill boom compensating cylinder or other executing agencies.Hydraulic pump 10 can drive the drill boom compensating cylinder simultaneously or other executing agencies carry out corresponding actions.
Below introduce the operating principle of hammer drill provided by the invention with hydraulic control circuit.
It is electric that the electromagnet YA1 of solenoid operated directional valve 13 is got, and makes solenoid operated directional valve 13 be in position, a left side, and the fluid of hydraulic pump 10 outputs gets into the rodless cavity that drill steel advances oil cylinder 11; Drill steel advances oil cylinder 11 to begin to advance; In the progradation, can regulate the fltting speed that drill steel advances oil cylinder 11 through the open degree of regulating solenoid operated directional valve 13 according to situation such as on-the-spot formation hardness, intensity, toughness; At this moment; Have the first overflow valve 20-1 work than low-key level pressure power, system is in low-pressure state, carries out little at a slow speed impact earlier; After bore bit gets into rock; Propulsive force increases, and when drill steel advanced the interior pressure of the rodless cavity of oil cylinder 11 to surpass the setting pressure of sequence valve 16, sequence valve 16 was opened; Drill steel advances the interior fluid of the rodless cavity of oil cylinder 11 to form control oil gets into the 3rd reversal valve 14 through sequence valve control end; Control oil will be opened the 3rd reversal valve 14, and the fluid of hydraulic pump 10 output will get in the hammer drill 12, at this moment through second pressure compensator 18, the 3rd reversal valve 14; Have the 3rd overflow valve 20-3 work than low-key level pressure power, hammer drill 12 carries out low pressure to be impacted.
When bore bit fully gets into rock, when confirming that bore bit does not have deflection danger, make the electromagnet YA4 of the second reversal valve 19-2 get; The 4th overflow valve 20-4 work with higher set pressure; The operating pressure of hammer drill 12 switches to high pressure, carries out impacting with high pressure, formally begins the rock drilling operation.
When card pricker phenomenon occurring; The rotational resistance of drill steel increases; Cause the pressure of drill steel rotation motor to rise, when this pressure is increased to the set pressure of unloader 15, unloader 15 is opened from the control oil that the drill steel rotation motor comes; Drill steel advances the interior fluid of the rodless cavity of oil cylinder 11 through unloader 15 releases, and drill steel advances oil cylinder 11 to stop to advance; Pressure reduces in this moment loop, resets under sequence valve 16 effect of portion's spring within it, and the 3rd reversal valve 14 resets, and hydraulic pump 10 no longer gets in the hammer drill 12, and hammer drill 12 stops to impact; After waiting to fix a breakdown, restart work again.
The propelling stroke that advances oil cylinder 11 when drill steel is to terminal the time, and hammer drill impacts and stops automatically, and get the electromagnet YA2 of solenoid operated directional valve 13 this moment; Solenoid operated directional valve 13 is in right position; It is electric that the electromagnet YA3 of the first reversal valve 19-1 is got, and has the second overflow valve 20-2 work of higher set pressure, and the fluid of hydraulic pump 10 outputs gets into the rod chamber that drill steel advances oil cylinder 11 with higher pressure; Drill steel advances oil cylinder 11 to return, and accomplishes an operation cycle.
Repeat above-mentioned flow process, can proceed next operation cycle.
Hammer drill provided by the invention is with in the hydraulic control circuit, and the control valve that need control all adopts electromagnetic valve like solenoid operated directional valve 13, the first reversal valve 19-1, the second reversal valve 19-2; Through sending electromagnetic control signal to these electromagnetic valves; Just can realize the switching-over or the flow-control of above-mentioned control valve, operating personnel do not need manual direct control control valve, and labor intensity of operating staff is less; Handling is good, can overcome the coarse defective of manually-operated location perforating.
Hammer drill provided by the invention is used hydraulic control circuit, adopts the load-sensitive loop, realizes that a hydraulic pump lets a plurality of executing agencies accurately carry out composite move; The control accuracy of raising system; And power attenuation is lower, and operating efficiency is higher, can reduce the manufacturing cost of hammer drill.
The present invention adopt two pressure circuits replace one progressively the perforating valve regulate pressure, can make executing agency under different working pressure, carry out work, improved the system pressure degree of regulation.
On the basis of above-mentioned hammer drill with hydraulic control circuit, the present invention also provides a kind of hammer drill to use the hydraulic control circuit control system, and following examples are carried out brief account to it.
Please referring to Fig. 3, Fig. 3 is the frame construction sketch map of hammer drill provided by the present invention with the hydraulic control circuit control system.
As shown in Figure 3, hammer drill provided by the invention comprises that with the hydraulic control circuit control system remote control transmitter 31, receiver of remote-control sytem 32, master controller 33 and the described hammer drill of the foregoing description use hydraulic control circuit.
Remote control transmitter 31 is used for the wireless transmit operation instruction signal.Remote control transmitter 31 can be carried by operating personnel; Operating personnel can be through the various operation instruction signals of remote control transmitter 31 emission, like operation instruction signals such as the adjustment of solenoid operated directional valve 13 switching-overs, solenoid operated directional valve 13 valve core opening degrees, first reversal valve 19-1 switching-over, the second reversal valve 19-2 switching-overs.
Receiver of remote-control sytem 32 is used to receive said operation instruction signal, and this operation instruction signal is sent to master controller 33.Receiver of remote-control sytem 32 is arranged in the electric control box of hammer drill, can receive the operation instruction signal of remote control transmitter 31 emissions, and received operation instruction signal is sent to master controller 33.
Master controller 33 is used to receive the operation instruction signal that receiver of remote-control sytem 32 sends, and controls said hammer drill and carry out corresponding actions with the electromagnetic valve 34 of hydraulic control circuit.After master controller 33 receives the operation instruction signal of receiver of remote-control sytem 32 transmissions; Send the analog signals of 0-10V with the electromagnet of the electromagnetic valve 34 of hydraulic control circuit to hammer drill; It is electric to make that the electromagnet of electromagnetic valve 34 gets, and electromagnetic valve 34 carries out corresponding actions through above-mentioned hammer drill with hydraulic control circuit control executing agency 35.Electromagnetic valve 34 can comprise that above-mentioned hammer drill is with the solenoid operated directional valve in the hydraulic control circuit 13, the first reversal valve 19-1, the second reversal valve 19-2.
Electromagnetic valve 34 carries out corresponding actions through above-mentioned hammer drill with hydraulic control circuit control executing agency 35, and its detailed process is similar to the above embodiments, no longer is described in detail at this.
Operating personnel are through the various operation instruction signals of remote control transmitter wireless transmit; The receiver of remote-control sytem that is positioned at the electric control box of hammer drill receives the operation instruction signal of remote control transmitter emission; And this operation instruction signal is sent to master controller; Master controller is according to received operation instruction signal, and the control hammer drill carries out corresponding actions with the solenoid operated directional valve of hydraulic control circuit.Use the hydraulic control circuit control system through this hammer drill, operating personnel can carry out corresponding actions by long-distance remote control operation hammer drill, and operating personnel do not need to have ensured operating personnel's personal safety at the enterprising line operate of hammer drill machine.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (11)
1. a hammer drill is used hydraulic control circuit, comprises that hydraulic pump, drill steel advance oil cylinder, drill steel rotation motor, hammer drill, it is characterized in that, also comprises solenoid operated directional valve, the 3rd reversal valve, unloader, sequence valve;
The oil-out of said hydraulic pump connects the oil-in of said solenoid operated directional valve, and first oil-out of said solenoid operated directional valve connects the rodless cavity that said drill steel advances oil cylinder, and second oil-out of said solenoid operated directional valve connects the rod chamber that said drill steel advances oil cylinder;
The oil-out of said hydraulic pump connects the oil-in of said the 3rd reversal valve, and the oil-out of said the 3rd reversal valve connects said hammer drill;
Said drill steel advances the rodless cavity of oil cylinder to be communicated with the oil-in of said unloader, and the oil-out of said unloader is communicated with fuel tank, and the control port of said unloader is connected with said drill steel rotation motor;
The oil-in of said sequence valve is connected said drill steel and advances on the rodless cavity and the oil circuit between the said unloader of oil cylinder, and the oil-out of said sequence valve connects the control port of said the 3rd reversal valve.
2. hammer drill according to claim 1 is used hydraulic control circuit; It is characterized in that; Oil circuit between the oil-out of said hydraulic pump and the said solenoid operated directional valve is provided with first pressure compensator; The oil-in of said first pressure compensator is communicated with the oil-out of said hydraulic pump, and the oil-out of said first pressure compensator is communicated with the oil-in of said solenoid operated directional valve.
3. hammer drill according to claim 2 is used hydraulic control circuit; It is characterized in that; The control end of said first pressure compensator connects the oil-in of first reversal valve, and two oil-outs of first reversal valve connect the first different overflow valve of set pressure, second overflow valve respectively.
4. hammer drill according to claim 1 is used hydraulic control circuit; It is characterized in that; Hydraulic fluid port between the oil-out of said hydraulic pump and said the 3rd reversal valve is provided with second pressure compensator; The oil-in of said second pressure compensator is communicated with the oil-out of said hydraulic pump, and the oil-out of said second pressure compensator is communicated with the oil-in of said the 3rd reversal valve.
5. hammer drill according to claim 4 is used hydraulic control circuit; It is characterized in that; The control end of said second pressure compensator connects the oil-in of second reversal valve, and two oil-outs of second reversal valve connect the 3rd different overflow valve of set pressure, the 4th overflow valve respectively.
6. use hydraulic control circuit according to each described hammer drill of claim 1-5, it is characterized in that, said hydraulic pump is the variable pump with load-sensitive function.
7. hammer drill according to claim 6 is used hydraulic control circuit; It is characterized in that; Also comprise the shuttle valve and first one way valve; Two oil-ins of said shuttle valve are communicated with first oil-out, second oil-out of said solenoid operated directional valve respectively, and the oil-out of said shuttle valve connects the LS mouth of said hydraulic pump through said first one way valve.
8. hammer drill according to claim 7 is used hydraulic control circuit; It is characterized in that; On the oil circuit between said the 3rd reversal valve and the said hammer drill, draw a pressure feedback branch road, this pressure feedback branch road connects the LS mouth of said hydraulic pump through second one way valve.
9. hammer drill according to claim 1 is used hydraulic control circuit, it is characterized in that, on the oil circuit between said the 3rd reversal valve and the said hammer drill, draws a branch road and is connected the drill boom compensating cylinder.
10. a hammer drill is used the hydraulic control circuit control system, it is characterized in that, comprises remote control transmitter, receiver of remote-control sytem, master controller, and each described hammer drill of claim 1-9 is used hydraulic control circuit;
Said remote control transmitter is used for the wireless transmit operation instruction signal;
Said receiver of remote-control sytem is used to receive said operation instruction signal, and said operation instruction signal is sent to said master controller;
Master controller is used to receive the operation instruction signal that said receiver of remote-control sytem sends, and controls said hammer drill and carry out corresponding actions with the electromagnetic valve of hydraulic control circuit;
Said electromagnetic valve comprises said solenoid operated directional valve, said first reversal valve, said second reversal valve.
11. hammer drill according to claim 10 is used hydraulic control circuit operating system, it is characterized in that, said solenoid operated directional valve is solenoid-operated proportional reversal valve or explosion-proof solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102600080A CN101748969B (en) | 2009-12-23 | 2009-12-23 | Hydraulic control loop used for jackdrill and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102600080A CN101748969B (en) | 2009-12-23 | 2009-12-23 | Hydraulic control loop used for jackdrill and control system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101748969A CN101748969A (en) | 2010-06-23 |
| CN101748969B true CN101748969B (en) | 2012-11-14 |
Family
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