CN206889375U - Down-the-hole drill propelling pressure self-adaptive hydraulic control loop - Google Patents
Down-the-hole drill propelling pressure self-adaptive hydraulic control loop Download PDFInfo
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- CN206889375U CN206889375U CN201720756383.4U CN201720756383U CN206889375U CN 206889375 U CN206889375 U CN 206889375U CN 201720756383 U CN201720756383 U CN 201720756383U CN 206889375 U CN206889375 U CN 206889375U
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- oil circuit
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- oil
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Abstract
The utility model discloses a kind of down-the-hole drill propelling pressure self-adaptive hydraulic control loop, including propelling cylinder and rotary motor, the first oil circuit is connected with the rod chamber of propelling cylinder, is connected with the second oil circuit on rodless cavity；The 3rd oil circuit and the 4th oil circuit are connected with respectively on two hydraulic fluid ports of rotary motor；Also include control loop, control loop includes the first control oil circuit and the second control oil circuit；First control oil circuit is provided with pressure adaptive control valve, and the oil outlet end of pressure adaptive control valve is connected with the control port of unidirectional piloted reducer, and the oil inlet end of pressure adaptive control valve is connected with the first oil circuit；Second control oil circuit is provided with shuttle valve, and the oil-out of shuttle valve is connected with the control port of the first overflow valve；One end of pressure adaptive control valve is provided with the first control port, the other end is provided with the second control port and spring, and the first control port is connected with the second control oil circuit, and the second control port is connected with the oil inlet end of pressure adaptive control valve.
Description
Technical field
The utility model belongs to hydraulic system technical field, is specifically a kind of down-the-hole drill propelling pressure self-adaptive hydraulic
Control loop.
Background technology
Down-the-hole drill is a kind of efficient rig, and in the market high-end product is substantially monopolized by external product,
Domestic manufacturer based on mid and low-end products, wherein, low-end product shipment amount is maximum.At present, low-end product is substantially without control
Device, using manually controlling, most basic function can only be realized.Down-the-hole drill drilling when drill bit in depth under, with brill
The increase of hole depth, the structure of rock stratum can change, and drilling rod increases its deadweight and can also increased, if propelling pressure is constant, bore
Resistance between head and rock stratum increases, and when resistance exceedes motor torsional moment, will appear from the phenomenon of bit freezing, bit freezing bores strong influence
Hole efficiency and service life of equipment.When rock stratum is harder, operating personnel are needed to heighten propelling pressure manually to improve drilling efficiency,
It is higher to the skill set requirements of operating personnel.
The content of the invention
In view of this, the purpose of this utility model is that providing a kind of down-the-hole drill propelling pressure self-adaptive hydraulic controls back
Road, can realize that propelling pressure is adapted with rotation pressure, drilling rod weight by hydraulic control, improve equipment drilling efficiency and
Adaptability, automatic pre- preventing sticking, reduces operation intensity.
To reach above-mentioned purpose, the utility model provides following technical scheme：
A kind of down-the-hole drill propelling pressure self-adaptive hydraulic control loop, including propelling cylinder and rotary motor, it is described to push away
Enter on the rod chamber of oil cylinder to be connected with the first oil circuit, be connected with the second oil circuit, first oil circuit and second on rodless cavity
The first banked direction control valves is connected with oil circuit；The 3rd oil circuit and the 4th oil are connected with two hydraulic fluid ports of the rotary motor respectively
Road, the second banked direction control valves is connected with the 3rd oil circuit and the 4th oil circuit；First banked direction control valves and the second banked direction control valves enter
Hydraulic fluid port is connected with oil sources respectively；
The first overflow valve is provided between first oil circuit and the second oil circuit, and first oil circuit is provided with unidirectional guide
Formula pressure-reducing valve；The second overflow valve is provided between 3rd oil circuit and the 4th oil circuit；
Also include control loop, the control loop includes the first control oil circuit and is arranged on first oil circuit and the 4th
The second control oil circuit between oil circuit；
The first control oil circuit is provided with pressure adaptive control valve, the oil outlet end of the pressure adaptive control valve and
The control port of the unidirectional piloted reducer is connected, the oil inlet end of the pressure adaptive control valve and first oil circuit
It is connected；
The second control oil circuit is provided with shuttle valve, the control port of the oil-out of the shuttle valve and first overflow valve
It is connected；
One end of the pressure adaptive control valve is provided with the first control port, the other end is provided with the second control port and bullet
Spring, control port are provided with damping hole, and first control port is connected with the described second control oil circuit, the second control oil
Mouth is connected with the oil inlet end of the pressure adaptive control valve.
Further, it is described that hydraulically-controlled type check valve, the liquid are unidirectionally provided between piloted reducer and the propelling cylinder
The control mouth of control formula check valve is connected with second oil circuit.
Further, the oil inlet end also series connection with it of the pressure adaptive control valve is provided with direct acting pressure.
Further, it is provided with pressure switch between the shuttle valve and the 4th oil circuit.
Further, connected between first oil circuit and the 4th oil circuit and be provided with choke valve and check valve.
The principle of down-the-hole drill propelling pressure self-adaptive hydraulic control loop of the present utility model is：Rock stratum is run into during drilling
Soften, promote depth increase, now, steering resistance increase, rotation pressure rises, control pressure on the left of pressure adaptive control valve
Rise, promote valve element to move right, the control mouth pressure oil pressure of guide's pressure-reducing valve declines, and valve core opening reduces, propelling pressure
Reduce, promote depth to reduce, resistance reduces, and rotation pressure recovers normal；When rotation pressure or propelling pressure can not self-regulated exceed
During overflow valve set pressure, the overflow valve work between first, second oil circuit, quick condition is advanced into, is sent to operating personnel
Signal；When drilling runs into rock stratum and is hardened, depth is promoted to reduce, steering resistance reduces, and drilling efficiency is not high, and now, pressure is adaptive
Control pressure on the left of control valve is answered to decline, valve element rises to left movement, the control mouth pressure oil pressure of guide's pressure-reducing valve, and valve element is opened
Mouth increase, propelling pressure rise, promote depth increase, drilling efficiency raising.
The beneficial effects of the utility model are：
Down-the-hole drill propelling pressure self-adaptive hydraulic control loop of the present utility model can realize propelling pressure with returning automatically
Turn pressure, drilling rod weight is adapted, and is applied on low side down-the-hole drill, the drilling efficiency of equipment can be improved, and realize automatic anti-
Bit freezing function；Controlled using pure hydraulic control circuit, in that context it may be convenient to existing equipment is transformed, improvement cost is low；Operation
As long as the operation that personnel can be basic, the skill set requirements of operating personnel are reduced.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing illustrates：
Fig. 1 is the fluid path figure of the utility model down-the-hole drill propelling pressure self-adaptive hydraulic control loop embodiment.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art
The utility model can be better understood from and can be practiced, but illustrated embodiment is not as to restriction of the present utility model.
As shown in figure 1, the fluid path for the utility model down-the-hole drill propelling pressure self-adaptive hydraulic control loop embodiment
Figure.The down-the-hole drill propelling pressure self-adaptive hydraulic control loop of the present embodiment, including propelling cylinder 13 and rotary motor 16, are pushed away
Enter on the rod chamber of oil cylinder 13 to be connected with the first oil circuit 1, be connected with the second oil circuit 2, the first oil circuit 1 and second on rodless cavity
The first banked direction control valves 9 is connected with oil circuit 2；The 3rd oil circuit 3 and the 4th is connected with respectively on two hydraulic fluid ports of rotary motor 16
Oil circuit 4, the second banked direction control valves 14 is connected with the 3rd oil circuit 3 and the 4th oil circuit 4；First banked direction control valves 9 and the second banked direction control valves 14
Oil inlet is connected with oil sources respectively.
The first overflow valve 10 is provided between first oil circuit and the second oil circuit, and the first oil circuit depressurizes provided with unidirectional pilot-operated type
Valve 11；The second overflow valve 15 is provided between 3rd oil circuit and the 4th oil circuit.The unidirectional piloted reducer 11 of the present embodiment is with pushing away
Enter between oil cylinder 13 and be provided with hydraulically-controlled type check valve 12, the control mouth of hydraulically-controlled type check valve 12 is connected with the second oil circuit 2.
The down-the-hole drill propelling pressure self-adaptive hydraulic control loop of the present embodiment also includes control loop, control loop bag
The the second control oil circuit 6 for including the first control oil circuit 5 and being arranged between the first oil circuit 1 and the 4th oil circuit 4.Specifically, the first control
Liquefaction road 5 is provided with pressure adaptive control valve 20, the oil outlet end of pressure adaptive control valve 20 and unidirectional piloted reducer
11 control port is connected, and the oil inlet end of pressure adaptive control valve 20 is connected with the first oil circuit 14, and pressure adaptive controls
The also series connection with it of the oil inlet end of valve 20 is provided with direct acting pressure 19.Connected between first oil circuit 1 and the 4th oil circuit 4 provided with throttling
Valve 17 and check valve 18.
Second control oil circuit 6 is provided with shuttle valve 21, and the oil-out of shuttle valve 21 is connected with the control port of the first overflow valve 10.
Pressure switch 22 is provided between the oil circuit 4 of shuttle valve 21 and the 4th.One end of the pressure adaptive control valve 20 of the present embodiment is provided with
First control port, the other end are provided with the second control port and spring, and control port is provided with damping hole, the first control port with
Second control oil circuit 6 is connected, and the second control port is connected with the oil inlet end of pressure adaptive control valve 20.
The principle of the down-the-hole drill propelling pressure self-adaptive hydraulic control loop of the present embodiment is：Rock stratum change is run into during drilling
It is soft, depth increase is promoted, now, steering resistance increase, rotation pressure rises, on the left of pressure adaptive control valve in control pressure
Rise, promote valve element to move right, the control mouth pressure oil pressure of guide's pressure-reducing valve declines, and valve core opening reduces, propelling pressure drop
It is low, promote depth to reduce, resistance reduces, and rotation pressure recovers normal；When rotation pressure or propelling pressure can not self-regulated exceed and overflow
When flowing valve set pressure, the overflow valve work between first, second oil circuit advances into quick condition, pressure switch turn on to
Operating personnel send signal；
When drilling runs into rock stratum and is hardened, promote depth to reduce, steering resistance reduces, and drilling efficiency is not high, now, pressure from
Control pressure declines on the left of suitable solution valve, and valve element rises to left movement, the control mouth pressure oil pressure of guide's pressure-reducing valve, valve element
Opening increase, propelling pressure rise promote depth increase, and drilling efficiency improves.
The beneficial effect of the present embodiment is：
Down-the-hole drill propelling pressure self-adaptive hydraulic control loop of the present utility model can realize propelling pressure with returning automatically
Turn pressure, drilling rod weight is adapted, and is applied on low side down-the-hole drill, the drilling efficiency of equipment can be improved, and realize automatic anti-
Bit freezing function；Controlled using pure hydraulic control circuit, in that context it may be convenient to existing equipment is transformed, improvement cost is low；Operation
As long as the operation that personnel can be basic, the skill set requirements of operating personnel are reduced.
Embodiment described above is only the preferred embodiment to absolutely prove the utility model and being lifted, the utility model
Protection domain not limited to this.The equivalent substitute or change that those skilled in the art are made on the basis of the utility model
Change, within the scope of protection of the utility model.The scope of protection of the utility model is defined by claims.
Claims (5)
1. a kind of down-the-hole drill propelling pressure self-adaptive hydraulic control loop, including propelling cylinder（13）And rotary motor（16）,
The propelling cylinder（13）Rod chamber on be connected with the first oil circuit（1）, be connected with the second oil circuit on rodless cavity（2）, institute
State the first oil circuit（1）With the second oil circuit（2）On be connected with the first banked direction control valves（9）；The rotary motor（16）Two hydraulic fluid ports
It is upper to be connected with the 3rd oil circuit respectively（3）With the 4th oil circuit（4）, the 3rd oil circuit（3）With the 4th oil circuit（4）On be connected with
Second banked direction control valves（14）；First banked direction control valves（9）With the second banked direction control valves（14）Oil inlet be connected respectively with oil sources；Its feature
It is：
The first overflow valve is provided between first oil circuit and the second oil circuit（10）, and first oil circuit is provided with unidirectional guide
Formula pressure-reducing valve（11）；The second overflow valve is provided between 3rd oil circuit and the 4th oil circuit（15）；
Also include control loop, the control loop includes the first control oil circuit（5）Be arranged on first oil circuit（1）With
Four oil circuits（4）Between second control oil circuit（6）；
The first control oil circuit（5）It is provided with pressure adaptive control valve（20）, the pressure adaptive control valve（20）'s
Oil outlet end and the unidirectional piloted reducer（11）Control port be connected, the pressure adaptive control valve（20）Oil-feed
End is connected with first oil circuit；
The second control oil circuit（6）It is provided with shuttle valve（21）, the shuttle valve（21）Oil-out and first overflow valve
（10）Control port be connected；
The pressure adaptive control valve（20）One end be provided with the first control port, the other end and be provided with the second control port and bullet
Spring, control port are provided with damping hole, and first control port is connected with the described second control oil circuit, the second control oil
Mouth and the pressure adaptive control valve（20）Oil inlet end be connected.
2. down-the-hole drill propelling pressure self-adaptive hydraulic control loop according to claim 1, it is characterised in that：The list
To piloted reducer（11）With the propelling cylinder（13）Between be provided with hydraulically-controlled type check valve（12）, the hydraulically-controlled type check valve
（12）Control mouth and second oil circuit（2）It is connected.
3. down-the-hole drill propelling pressure self-adaptive hydraulic control loop according to claim 1, it is characterised in that：The pressure
Force adaptive control valve（20）Oil inlet end also series connection with it be provided with direct acting pressure（19）.
4. down-the-hole drill propelling pressure self-adaptive hydraulic control loop according to claim 1, it is characterised in that：The shuttle
Valve（21）With the 4th oil circuit（4）Between be provided with pressure switch（22）.
5. down-the-hole drill propelling pressure self-adaptive hydraulic control loop according to claim 1, it is characterised in that：Described
One oil circuit（1）With the 4th oil circuit（4）Between series connection be provided with choke valve（17）And check valve（18）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720756383.4U CN206889375U (en) | 2017-06-27 | 2017-06-27 | Down-the-hole drill propelling pressure self-adaptive hydraulic control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720756383.4U CN206889375U (en) | 2017-06-27 | 2017-06-27 | Down-the-hole drill propelling pressure self-adaptive hydraulic control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889375U true CN206889375U (en) | 2018-01-16 |
Family
ID=61315809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720756383.4U Expired - Fee Related CN206889375U (en) | 2017-06-27 | 2017-06-27 | Down-the-hole drill propelling pressure self-adaptive hydraulic control loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889375U (en) |
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 |
| CN112832736A (en) * | 2019-11-23 | 2021-05-25 | 山东科技大学 | Automatic anti-sticking's hydraulic pressure colliery rig |
-
2017
- 2017-06-27 CN CN201720756383.4U patent/CN206889375U/en not_active Expired - Fee Related
Cited By (4)
| 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 |
| CN112832736A (en) * | 2019-11-23 | 2021-05-25 | 山东科技大学 | Automatic anti-sticking's hydraulic pressure colliery rig |
| CN112832736B (en) * | 2019-11-23 | 2023-07-14 | 山东科技大学 | Automatic anti-sticking bores hydraulic coal mine drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20190627 |