CN205743871U - A kind of down-the-hole drill automatic anti-blocking bar controlling - Google Patents
A kind of down-the-hole drill automatic anti-blocking bar controlling Download PDFInfo
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- CN205743871U CN205743871U CN201620419088.5U CN201620419088U CN205743871U CN 205743871 U CN205743871 U CN 205743871U CN 201620419088 U CN201620419088 U CN 201620419088U CN 205743871 U CN205743871 U CN 205743871U
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Abstract
A kind of down-the-hole drill automatic anti-blocking bar controlling, including fuel tank, variable pump group, pilot-controlled multi-way reversing valve, drilling rod propulsion motor, drilling rod rotary motor and propelling pilot handle, the described a mouth advancing pilot handle is connected with the p mouth of solenoid directional control valve, b mouth is connected with three-way shuttle valve, the a1 mouth of described solenoid directional control valve and the a2 mouth of the first pilot-controlled multi-way reversing valve are connected, b1 mouth is connected with three-way shuttle valve, t mouth is connected with fuel tank, the outlet of described three-way shuttle valve is connected with the b2 mouth of the first pilot-controlled multi-way reversing valve, the oil circuit that pressure switch rotates forward between A2 mouth and the second pilot-controlled multi-way reversing valve A1 mouth with drilling rod rotary motor is connected, the outfan of described pressure switch is connected with the input of PLC, the outfan of described PLC is connected with the coil of solenoid directional control valve.This utility model controls solenoid directional control valve by pressure switch and PLC and obtains electric, it is achieved that carry on drilling rod is reverse is automatically brought into operation, and efficiently solves kelly problem.
Description
Technical field
This utility model relates to a kind of down-the-hole drill automatic anti-blocking bar controlling, belongs to mine drilling equipment technical field.
Background technology
Down-the-hole drill, in boring procedure, owing to rock texture is complicated or deslagging is not smooth, often causes lock of tool drilling, once blocks
Bore, not only need to take a significant amount of time process drill bit and drilling rod, have a strong impact on work efficiency, it is also possible to cause drill bit, drilling rod quilt
Compel to abandon, increase Drilling cost, so down-the-hole drill must possess automatic anti-blocking and bore function.Down-the-hole drill is big the most both at home and abroad
Use installs pilot operated directional control valve additional between propulsion motor (or oil cylinder) and main control valve group more, utilizes the rotating forward of rotary motor to feed back
Pressure makes pilot operated directional control valve commutation change the trend of pressure oil, so that propulsion motor (or oil cylinder) counteragent, and then realize
The anti-drilling rod function that carries, but there is certain problem in this control: instantly push away control action and keep constant, when rotation pressure is too high, liquid
Control reversal valve commutation, drilling rod performs the anti-work that carries, and the moment rotation pressure that drilling rod carries can decline again, pilot operated directional control valve return,
Drilling rod performs down again to promote work, and the most repeatedly, system enters vicious cycle, and drilling rod can not realize carrying work on persistently and depart from card
Bore district, be therefore badly in need of developing a kind of feasible, effective down-the-hole drill automatic anti-blocking bar controlling.
Utility model content
This utility model solve the deficiencies in the prior art and also provide a kind of achieve drilling rod reversely on carry be automatically brought into operation, effectively
Solve the down-the-hole drill automatic anti-blocking bar controlling of kelly problem.
For solving problem above, the technical solution adopted in the utility model is: include fuel tank, variable pump group, hydraulic control multi-way reversing
Valve, drilling rod propulsion motor, drilling rod rotary motor and propelling pilot handle, a mouth of described propelling pilot handle and solenoid directional control valve
P mouth is connected, and the b mouth of described propelling pilot handle is connected with three-way shuttle valve, the a1 mouth of described solenoid directional control valve and the first hydraulic control multichannel
The a2 mouth of reversal valve is connected, and the b1 mouth of described solenoid directional control valve is connected with three-way shuttle valve, the t mouth of described solenoid directional control valve and fuel tank phase
Even, the outlet of described three-way shuttle valve is connected with the b2 mouth of the first pilot-controlled multi-way reversing valve, and pressure switch is with drilling rod rotary motor just
Turning the oil circuit between the A1 mouth of A2 mouth and the second pilot-controlled multi-way reversing valve to be connected, the outfan of described pressure switch controls with PLC
The input of device is connected, and the outfan of described PLC is connected with the coil of described solenoid directional control valve.
Use the down-the-hole drill automatic anti-blocking bar controlling of technique scheme, add one advancing on pilot control oil circuit
The oil circuit controlled by solenoid directional control valve, and by pressure switch and PLC, solenoid directional control valve is controlled.Boring advances
Time, when rotary motor rotating forward mouth pressure is raised to pressure switch setting value, pressure switch sends control signal through PLC control
Device controls solenoid directional control valve and obtains electric, makes propelling pilot handle a mouth guide oil enter the first hydraulic control multi-way reversing through solenoid directional control valve b1 mouth
Control mouth b2 mouth is carried, it is achieved on drilling rod is automatic, put forward function on valve.
In sum, this utility model is that one obtains electric by pressure switch and PLC control solenoid directional control valve, it is achieved bore
During entering drilling rod reversely on carry be automatically brought into operation, can effectively solve the down-the-hole drill automatic anti-blocking bar controlling of kelly problem.
Accompanying drawing explanation
Fig. 1 is hydraulic control circuit schematic diagram of the present utility model.
In accompanying drawing, 1, fuel tank, 2, variable pump group, 3-1, the first pilot-controlled multi-way reversing valve, 3-2, the second pilot-controlled multi-way reversing valve,
4, drilling rod propulsion motor, 5, drilling rod rotary motor, 6, pressure switch, 7, PLC, 8, solenoid directional control valve, 9,
Advance pilot handle, 10, three-way shuttle valve.
Detailed description of the invention
With specific embodiment, structure of the present utility model and operating principle are described further below in conjunction with the accompanying drawings.
Referring to the drawings 1, fuel tank 1, variable pump group 2, pilot-controlled multi-way reversing valve 3, drilling rod propulsion motor 4, drilling rod rotary motor 5 are pressed
Connecting according to technological requirement, drilling rod propulsion motor 4 is connected with the first pilot-controlled multi-way reversing valve 3-1, the A2 of described drilling rod rotary motor 5
Mouth and B2 mouth are connected with A1 mouth and the B1 mouth of the second pilot-controlled multi-way reversing valve 3-2 respectively, advance a mouth of pilot handle 9 to change with electromagnetism
Being connected to the p mouth of valve 8, b mouth is connected with three-way shuttle valve 10, the a1 mouth of solenoid directional control valve 8 and the a2 of the first pilot-controlled multi-way reversing valve 3-1
Mouth is connected, and b1 mouth is connected with three-way shuttle valve 10, and t mouth is connected with fuel tank 1, the outlet of three-way shuttle valve 10 and the first hydraulic control multi-way reversing
The b2 mouth of valve 3-1 is connected, and pressure switch 6 and drilling rod rotary motor 5 rotate forward A2 mouth and the A1 mouth of the second pilot-controlled multi-way reversing valve 3-2
Between oil circuit be connected, the outfan of pressure switch 6 is connected with the input of PLC 7, the outfan of PLC 7
It is connected with the coil of solenoid directional control valve 8.
During boring, the A1 mouth pressure oil output of the second pilot-controlled multi-way reversing valve 3-2 enters the A2 mouth of drilling rod rotary motor 5 makes it rotate forward,
When drilling rod rotary motor 5 rotates forward the setting value that pressure is less than pressure switch 6, solenoid directional control valve 8 dead electricity, advance pilot handle 9
The guide oil of a mouth output enter the a2 mouth of the first pilot-controlled multi-way reversing valve 3-1 through the a1 mouth of solenoid directional control valve 8, control drilling rod and advance
Motor 4 promotes work under performing, when drilling rod enters bit freezing district, when rotary motor 5 rotates forward the setting value that pressure is raised to pressure switch 6,
Pressure switch 6 sends control signal, and PLC 7 performs program, makes solenoid directional control valve 8 obtain electric 5 seconds, now advances guide
The guide oil of a mouth output of handle 9 enters the first pilot-controlled multi-way reversing valve 3-1's through b1 mouth and the three-way shuttle valve 10 of solenoid directional control valve 8
B2 mouth, make drilling rod propulsion motor 4 persistently on carry 5 seconds disengaging bit freezing districts of drilling rod, it is achieved automatic anti-blocking bar function.
On down-the-hole drill, monitoring drilling rod rotary motor 5 rotates forward the pressure switch 6 of pressure and does not makes electromagnetism by PLC 7
Reversal valve 8 obtains in the protection domain that electric all control devices (such as: time-delay relay) broadly fall into this patent.
Claims (1)
1. a down-the-hole drill automatic anti-blocking bar controlling, including fuel tank (1), variable pump group (2), pilot-controlled multi-way reversing valve
(3), drilling rod propulsion motor (4), drilling rod rotary motor (5) and propelling pilot handle (9), it is characterised in that: described propelling
The a mouth of pilot handle (9) is connected with the p mouth of solenoid directional control valve (8), the b mouth of described propelling pilot handle (9) and threeway shuttle
Valve (10) is connected, and the a1 mouth of described solenoid directional control valve (8) and the a2 mouth of the first pilot-controlled multi-way reversing valve (3-1) are connected, institute
The b1 mouth stating solenoid directional control valve (8) is connected with three-way shuttle valve (10), the t mouth of described solenoid directional control valve (8) and fuel tank (1)
Being connected, the outlet of described three-way shuttle valve (10) is connected with the b2 mouth of the first pilot-controlled multi-way reversing valve (3-1), pressure switch (6)
The oil circuit rotated forward between A2 mouth and the A1 mouth of the second pilot-controlled multi-way reversing valve (3-2) with drilling rod rotary motor (5) is connected, described
The outfan of pressure switch (6) is connected with the input of PLC (7), the outfan of described PLC (7)
It is connected with the coil of described solenoid directional control valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419088.5U CN205743871U (en) | 2016-05-10 | 2016-05-10 | A kind of down-the-hole drill automatic anti-blocking bar controlling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419088.5U CN205743871U (en) | 2016-05-10 | 2016-05-10 | A kind of down-the-hole drill automatic anti-blocking bar controlling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205743871U true CN205743871U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620419088.5U Active CN205743871U (en) | 2016-05-10 | 2016-05-10 | A kind of down-the-hole drill automatic anti-blocking bar controlling |
Country Status (1)
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| CN (1) | CN205743871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524644A (en) * | 2017-06-27 | 2017-12-29 | 衢州职业技术学院 | Down-the-hole drill propelling pressure self-adaptive hydraulic control loop |
-
2016
- 2016-05-10 CN CN201620419088.5U patent/CN205743871U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524644A (en) * | 2017-06-27 | 2017-12-29 | 衢州职业技术学院 | Down-the-hole drill propelling pressure self-adaptive hydraulic control loop |
| CN107524644B (en) * | 2017-06-27 | 2024-03-01 | 衢州职业技术学院 | Self-adaptive hydraulic control loop for thrust pressure of down-the-hole drill |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |