CN202882880U - Back pressure adjusting device of full-sleeve full-slewing drilling machine - Google Patents
Back pressure adjusting device of full-sleeve full-slewing drilling machine Download PDFInfo
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- CN202882880U CN202882880U CN 201220627718 CN201220627718U CN202882880U CN 202882880 U CN202882880 U CN 202882880U CN 201220627718 CN201220627718 CN 201220627718 CN 201220627718 U CN201220627718 U CN 201220627718U CN 202882880 U CN202882880 U CN 202882880U
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- back pressure
- pressure adjusting
- sleeve
- adjusting apparatus
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Abstract
The utility model relates to a back pressure adjusting device of a full-sleeve full-slewing drilling machine. The back pressure adjusting device comprises an electro-hydraulic directional control valve for controlling the full-sleeve full-slewing drilling machine to rotate leftwards or rightwards, and an electro-proportional overflow valve for adjusting rotary torque in a stepless manner, wherein a torque maximizing device comprises a pressure sensor which is used for sensing the back pressure of return oil to provide an adjustment basis for the electro-proportional overflow valve. By adopting the back pressure adjusting device, the system pressure is adjusted in time according to the feedback of the pressure sensor, the aim of energy saving is realized, and the full-sleeve full-slewing drilling machine can run efficiently and reliably.
Description
Technical field
The utility model relates to a kind of engineering machinery, relates in particular to control in a kind of full-sleeve full-rotation drill to press the hydraulic control valve group of pulling out clamping force.
Background technology
Powerful engineering machinery is the guarantee that the infrastructure of country is carried out smoothly, because China region is vast, the work condition environment of construction is very complicated, construction under the various geological environments such as plateau, mountain area, hills, seabeach, rivers,lakes and seas beach, often run into the underground drift sand that has, the various geological conditions such as solution cavity, rock stratum, traditional excavation facility and job practices are difficult to construction.Full-sleeve full-rotation drill is as the emerging product of construction machinery industry, becomes the optimal construction machinery of pore-forming operation in suitable high ferro, overhead, the building foundation engineering.Full-sleeve full-rotation drill realizes that step-less adjustment, the pressure of clamping force and pressing-in force stirred the do commutation, a key is realized pulling power maximum etc., to guarantee full-rotating drill realization various functions when running well.In some cases, sleeve pipe is difficult to extract in hard stratum, because traditional machine is difficult to so large pulling power, directly fill with stake so many times can abandon sleeve pipe, this has just caused serious waste, sometimes even can affect into quality of pile and power is adjusted valve and can be realized that the moment pulling force is maximum, the dynamics sound assurance up to hundreds of tons carrying out smoothly of construction.
The utility model content
The purpose of this utility model provides a kind of return oil pressure checkout gear of in time feedback system pressure.
The utility model is realized with following technical scheme: a kind of full-sleeve full-rotation drill back pressure adjusting apparatus, it comprises control full-rotating drill left-handed or the electro-hydraulic reversing valve of dextrorotation and the electric proportional pressure control valve of step-less adjustment rotary torque, and described torque maximization device comprises that also the sensing return oil pressure is to provide the pressure sensor of electric proportional overflow valve regulation foundation.
Disconnect electric proportional pressure control valve when further, described back pressure adjusting apparatus also comprises electricly and directly with the two-position four-way solenoid valve of the peak torque work of full-rotating drill.
Further, described back pressure adjusting apparatus also comprises the regulation relief valve of control rotary system peak torque.
The beneficial effects of the utility model are: according to the timely regulating system pressure of the feedback of pressure sensor, realize energy-conservation purpose, guarantee full-sleeve full-rotation drill efficiently, reliably operation.
Description of drawings
Fig. 1 is the structural representation of the utility model full-sleeve full-rotation drill back pressure adjusting apparatus.
The specific embodiment
As shown in Figure 1, the utility model full-rotating drill back pressure adjusting apparatus comprises valve body 1 and is assembled in the two-position four-way solenoid valve 2, overflow valve 3 of valve body 1, conducts electricity hydrorrhea stream valve 4, three position four-way electromagnetic valve 5, pressure sensor 6 and electric proportional pressure control valve 7 first.
Described 3-position 4-way solenoid operated directional valve 5 is controlled working connection commutation, finishes the full-rotating drill pulling or is pressed into the needs of action; Press the maximum pressure that pulls out clamping system by regulation relief valve 3 controls, make system pressure reach preset value; Because pulling is different with the operating mode that is pressed into, flows valve and set respectively its oil pressure relief by conducting electricity first hydrorrhea; The power of electric current changes to control the unlatching size of electric proportional pressure control valve 7, and can realize thus the size of step-less adjustment pressing-in force and clamping force; Must be electric when two-position four-way solenoid valve 2, electric proportional pressure control valve 7 will be disconnected, and system will be with maximum pressure work, especially at some in particular cases, sleeve pipe is the end in depth, is difficult to extract, more can bring into play the huge power of described function this moment, to guarantee carrying out smoothly of construction; When back pressure appearred in the oil return of system, pressure sensor 6 will feed back this force value, this pressure occurred, power dissipation has appearred in illustrative system, can suitably regulate electric proportional pressure control valve 7 this pressure is reduced to minimum, more efficient and rational use power, realize energy-conserving and environment-protective.
The utility model full-sleeve full-rotation drill back pressure adjusting apparatus can be achieved as follows function: 1, clamping force and pressing-in force can be adjusted to suitable position as required; 2, be pressed into and pulling action commutation; 3, a key realizes that pulling power is maximum; 4, according to the feedback of sensor, suitable regulating system pressure, the more efficient energy that utilizes reaches energy-conservation purpose; 5, set the system works pressure of safety.
Claims (3)
1. full-sleeve full-rotation drill back pressure adjusting apparatus, it comprises control full-rotating drill left-handed or the electro-hydraulic reversing valve of dextrorotation and the electric proportional pressure control valve of step-less adjustment rotary torque, and it is characterized in that: described back pressure adjusting apparatus comprises that also the sensing return oil pressure is to provide the pressure sensor of electric proportional overflow valve regulation foundation.
2. full-sleeve full-rotation drill back pressure adjusting apparatus as claimed in claim 1 is characterized in that: described back pressure adjusting apparatus disconnects electric proportional pressure control valve and directly with the two-position four-way solenoid valve of the peak torque work of full-rotating drill when also comprising electricly.
3. full-sleeve full-rotation drill back pressure adjusting apparatus as claimed in claim 2 is characterized in that: described back pressure adjusting apparatus also comprises the regulation relief valve of control rotary system peak torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627718 CN202882880U (en) | 2012-11-22 | 2012-11-22 | Back pressure adjusting device of full-sleeve full-slewing drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627718 CN202882880U (en) | 2012-11-22 | 2012-11-22 | Back pressure adjusting device of full-sleeve full-slewing drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882880U true CN202882880U (en) | 2013-04-17 |
Family
ID=48074320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220627718 Expired - Fee Related CN202882880U (en) | 2012-11-22 | 2012-11-22 | Back pressure adjusting device of full-sleeve full-slewing drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389579A (en) * | 2014-10-31 | 2015-03-04 | 山河智能装备股份有限公司 | Rotating and boosting EHC (Electric Hydraulic Control) method of rock drilling machine and control circuit for realizing rotating and boosting EHC method |
-
2012
- 2012-11-22 CN CN 201220627718 patent/CN202882880U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389579A (en) * | 2014-10-31 | 2015-03-04 | 山河智能装备股份有限公司 | Rotating and boosting EHC (Electric Hydraulic Control) method of rock drilling machine and control circuit for realizing rotating and boosting EHC method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200609 Address after: 221140 No. 8 Tongfa Road, Quanshan Economic Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Dun'an Construction Machinery Manufacturing Co.,Ltd. Address before: 311835, Shaoxing City, Zhejiang province Zhuji Port Industrial Zone Patentee before: Zhejiang Dunan Precision Industries Group Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210804 Address after: 201901 5 / F, 6 / F, building 5, No. 258, Yangnan Road, Baoshan District, Shanghai Patentee after: SHANGHAI ENGINEERING MACHINERY Co.,Ltd. Address before: 221140 No.8 Tongfa Road, Quanzhou Economic Development Zone, Quanzhou District, Xuzhou City, Jiangsu Province Patentee before: Xuzhou Dun'an Construction Machinery Manufacturing Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20211122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |