CN203716836U - Impact pressure remote-control hydraulic circuit of jackdrill - Google Patents
Impact pressure remote-control hydraulic circuit of jackdrill Download PDFInfo
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- CN203716836U CN203716836U CN201320891258.6U CN201320891258U CN203716836U CN 203716836 U CN203716836 U CN 203716836U CN 201320891258 U CN201320891258 U CN 201320891258U CN 203716836 U CN203716836 U CN 203716836U
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 13
- 206010031009 Oral pain Diseases 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 20
- 230000003116 impacting effect Effects 0.000 abstract description 9
- 238000005553 drilling Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 238000004080 punching Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Abstract
An impact pressure remote-control hydraulic circuit of a jackdrill comprises a load sensitive variable pump, a load sensitive proportional multi-way valve, the jackdrill, a remote-control overflow valve and a hydraulic oil tank, wherein the load sensitive proportional multi-way valve comprises an impacting coupler, the impacting coupler is provided with a pressure difference compensator, a load feedback shuttle valve and an independent load sensitive external control port LsA1 of an oil port A1; a pressure oil port P of the load sensitive variable pump is connected with an oil inlet P' of the load sensitive multi-way valve, a load sensitive port Ls of the load sensitive variable pump is connected with a load sensitive port Ls' of the load sensitive proportional multi-way valve, the oil port A1 of the impacting coupler is connected with an impacting oil inlet P1 of the jackdrill, the independent load external control port LsA1 of the oil port A1 of the impacting coupler is connected with an oil inlet D of the remote-control overflow valve, and an oil return port of the remote-control overflow valve is connected with the hydraulic oil tank. Pressure of the LsA1 port is adjusted by adjusting the remote-control overflow valve, and therefore the output pressure of the oil port A1 of the impacting coupler is controlled through the load feedback shuttle valve, the pressure difference compensator and the load sensitive variable pump, only the output pressure of the oil port A1 of the impacting coupler is controlled, and the output pressure of other working couplers is not influenced.
Description
Affiliated technical field
The utility model relates to hydraulic drill rig hydraulic control technology, relates in particular to hammer drill and impacts hydraulic pressure remote adjustment control technology.
Background technology
Hydraulic drill rig is as one of mainstream model of rock drilling equipment, compare the rock drilling equipment types such as down-the-hole drill, rotary drill, cutting drill and there is the outstanding advantages such as rock stratum applicability is good, rate of penetration is fast, oil consumption is low, be widely used in hard and brill blast hole Drilling operation medium-hard rock.Hammer drill is the key operation device of hydraulic drill rig, determine the transaction capabilities of complete machine, and the performance of its hydraulic control circuit is depended in the performance of hammer drill performance.Rock drilling working condition is severe, drilling process is complicated, is embodied in, and under perforate operating mode, a little less than needing, pushes away with weak punching and controls, to guarantee straightness accuracy and the protection drilling tool of perforate; Evenly, under the drilling condition of rock stratum, need enough propulsive forces, fltting speed and strong punching to control, effectively to bring into play hammer drill efficiency, guarantee rate of penetration; Under soft rock, pan soil interlayer operating mode, a little less than needing, push away and weak punching, with pre-capable of preventing sticking, protection drilling tool, guarantee effectively by interlayer geology; Prominent chance under the operating modes such as solution cavity, gap, pushes away a little less than needing automatically, weak punching, with effectively, by solution cavity, gap, and protects drilling tool.Under different working conditions, hammer drill impacts and need be operated in certain state, and during various change working, impacts and need reliable self adaptation conversion.The control far away of hammer drill impact reliably loop is the prerequisite that realizes above-mentioned different operating conditions demands.
Hammer drill impacts one of operating characteristic is correlated with for pressure versus flow, and in rated range, flow is larger, and pressure is larger.The employing of Some Domestic hydraulic drill rig is impacted flow by control and is controlled surge, but all has unreliable, unsettled problem.Reason is that the gain of pressure relative discharge is larger, and less flow change can cause larger pressure change, and therefore by controlling flow, controlled pressure regulates difficult stable.External reputable brand Atlase hydraulic drill rig surge is controlled the method that adopts control load-sensitive main pump far away, but main pump is not only given and is impacted oil circuit fuel feeding, simultaneously in parallel to other oil circuit fuel feeding, this just makes the control logic complexity far away of main pump pressure under different oil circuits, different operating mode work, the application of electricity liquid logic function valve piece is more, hydraulic system fault inspection and repair technology is difficult to grasp, and maintenance cost is high.The research and development of domestic hydraulic drill rig and trial-production mostly are imitated external type, but the problems such as imitated and application coupling details of the complexity of external hydraulic drill rig hydraulic circuit and electric liquid logic function valve piece are difficult to put in place, restriction complete machine transaction capabilities and reliability.The technological core of domestic hydraulic drill rig development concentrates on the lifting of hydraulic control technology, needs to adapt to simple and easy, the reliable hydraulic control technology of the current hydraulic part of China and the system matches state of the art.
Summary of the invention
The purpose of this utility model be to overcome existing hammer drill impact the deficiency of hydraulic control technology and provide a kind of simple and easy, realize surge reliably and far control the hammer drill surge of adjusting and far control hydraulic circuit.
A kind of hammer drill surge is far controlled hydraulic circuit, comprise load-reacting pump, load-sensitive proportional multi-way valve, hammer drill, control overflow valve far away and hydraulic oil container, the pressure hydraulic fluid port P of described load-reacting pump and the oil inlet P of described load sensing multi-way valve ' be connected, the load-sensitive mouth Ls of described load-reacting pump is connected with the load-sensitive mouth Ls ' of load-sensitive proportional multi-way valve, described load-sensitive proportional multi-way valve comprises that spool flow meets the impact connection of the maximum impact working flow of described hammer drill, the hydraulic fluid port A1 of described impact connection impacts oil inlet P 1 with hammer drill and is connected, the hydraulic fluid port A1 of described impact connection is provided with independent load-sensitive outside control mouth LsA1, described independent load-sensitive outside control mouth LsA1 is connected with the oil-in D of control overflow valve far away, described control overflow valve far away can regulate between the high shock pressure of described hammer drill and minimum surge.
In described impact connection, be also provided with differential pressure compensator and load feedback shuttle valve, the spool that described differential pressure compensator load feedback mouth Ls1 joins by described impact is connected with described independent load-sensitive outside control mouth LsA1, described differential pressure compensator load feedback mouth Ls1 is connected with the first oil-in a of described load feedback shuttle valve, the oil-out of the load feedback shuttle valve of other work connection of the second oil-in b of described load feedback shuttle valve and described load-sensitive proportional multi-way valve is connected, the load feedback shuttle valve oil-out c of described impact connection is connected with the load-sensitive mouth Ls ' of the quick ratio sense of load banked direction control valves, the spool that the setting value of described control overflow valve far away joins by impact successively, differential pressure compensator, load feedback shuttle valve, Ls ' the mouth of load-sensitive proportional multi-way valve feeds back to load-reacting pump load feedback port Ls.
Owing to adopting technique scheme, the utlity model has following advantage:
1, by regulating control overflow valve far away to realize hammer drill surge, far control adjusting, simple and easy, reliable;
2, the independent load-sensitive outside control mouth, differential pressure compensator, load feedback shuttle valve and the load-reacting pump that by impact, join hydraulic fluid port A1, realize the independent control far away of hammer drill surge and regulate, and is independent of each other with other work connection.
In sum, the utility model is by regulating control overflow valve far away to regulate LsA1 mouth pressure, and then control and impact connection hydraulic fluid port A1 output pressure by load feedback shuttle valve, differential pressure compensator and load-reacting pump, abandoned and domesticly by control, impacted the technological means that flow is controlled surge, thereby made to control reliable, stable.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of hammer drill surge is far controlled hydraulic circuit, by load-reacting pump 1, load-sensitive proportional multi-way valve 2, hammer drill 3, far control overflow valve 4 and hydraulic oil container 5 etc. and form hammer drill surge and far control hydraulic circuit, described load sensing multi-way valve 2 is characterised in that: described load-sensitive proportional multi-way valve 2 comprises impact connection 21, described impact connection 21 has spool, differential pressure compensator 211, load feedback shuttle valve 212, the independent load-sensitive outside control mouth LsA1 of hydraulic fluid port A1 and hydraulic fluid port A1, described differential pressure compensator 211 load feedback mouth Ls1 are connected with described independent load-sensitive outside control mouth LsA1 by spool valve body structure, described differential pressure compensator 211 load feedback mouth Ls1 are connected with the first oil-in a of described load feedback shuttle valve 212, the second oil-in b of described load feedback shuttle valve 212 is connected with the oil-out of the load feedback shuttle valve of another work connection of load-sensitive proportional multi-way valve 2, in this example, the second oil-in of the load feedback shuttle valve of last a slice work connection of described load-sensitive proportional multi-way valve 2 is connected with hydraulic oil container 5, the oil-out c of described impact connection load feedback shuttle valve 212 is connected with the load-sensitive mouth Ls ' of the quick ratio sense of load banked direction control valves 2, the hydraulic fluid port A1 of described impact connection 21 impacts oil inlet P 1 with hammer drill and is connected, described independent load-sensitive outside control mouth LsA1 is connected with the oil-in D of control overflow valve 4 far away, the oil return inlet T of described overflow valve 4 is connected with hydraulic oil container 5, the pressure hydraulic fluid port P of described load-reacting pump 1 and the oil inlet P of described load sensing multi-way valve ' be connected, the load-sensitive mouth Ls of described load-reacting pump 1 is connected with the load-sensitive mouth Ls ' of load-sensitive proportional multi-way valve 2, the inlet port of described load-reacting pump 1, the oil return opening of load-sensitive proportional multi-way valve is all connected with hydraulic oil container 5.
Described impact joins 21 spool flows, and to take the maximum impact working flow that meets hammer drill 3 be criterion, and it is criterion that described control overflow valve 4 pressure limits far away be take the high shock pressure and the minimum surge that comprise hammer drill 3; Regulate the setting value of control overflow valve 4 far away, in the time of between the maximum impact pressure of hammer drill 3 and minimal impact pressure, the surge of hammer drill 3 regulates and sets by far controlling overflow valve 4.
Divide two kinds of operating modes to specifically describe embodiment of the present utility model below.
1, only impact connection work
While only impacting connection work, the setting value of described control overflow valve 4 far away joins 21 spool valve body structure, differential pressure compensator 211, load feedback shuttle valve 212 successively by impact) Ls ' mouth of load-sensitive proportional multi-way valve 2 feeds back to load-reacting pump 1 load feedback mouth Ls, the outlet pressure of load-reacting pump 1 is adapted to far control the setting value of overflow valve 4, and then the surge of control hammer drill 3 is adapted to far control the setting value of overflow valve 4.
2, impact connection works with other work connection simultaneously
When impacting connection 21 and working with other work connection simultaneously, if the operating pressure of other work connection lower than control overflow valve 4 setting values far away, the course of work is with described in above-mentioned 1 step; If the operating pressure of other work connection is higher than control overflow valve far away 4 pressure set points, maximum pressure work connection operating pressure feeds back to the load-sensitive mouth Ls of load-reacting pump 1 by the load feedback shuttle valve of load-sensitive proportional multi-way valve 2 each sheets, and the output pressure of load-reacting pump 1 is adapted to maximum pressure work connection operating pressure; Impact connection 21 differential pressure compensators 211 under the setting value acting in conjunction of maximum pressure work connection operating pressure and control overflow valve 4 far away, the oil-feed valve port that differential pressure compensator 211 is communicated with oil-feed connection and impact connection 21 turns down, produce certain pressure difference compensation, thereby the operating pressure of controlling impact connection 21 hydraulic fluid port A1 is adapted to far control the setting value of overflow valve 4, not affected by other work connection operating pressure, do not affect other work connection operating pressure yet.
Claims (3)
1. a hammer drill surge is far controlled hydraulic circuit, comprise load-reacting pump (1), load-sensitive proportional multi-way valve (2), hammer drill (3), control overflow valve (4) far away and hydraulic oil container (5), the pressure hydraulic fluid port (P) of described load-reacting pump (1) is connected with the oil-in (P ') of described load sensing multi-way valve, the load-sensitive mouth (Ls) of described load-reacting pump (1) is connected with the load-sensitive mouth (Ls ') of load-sensitive proportional multi-way valve (2), it is characterized in that: described load-sensitive proportional multi-way valve (2) comprises impact connection (21), the hydraulic fluid port (A1) of described impact connection (21) impacts oil-in (P1) with hammer drill and is connected, the hydraulic fluid port (A1) of described impact connection (21) is provided with independent load-sensitive outside control mouth (LsA1), described independent load-sensitive outside control mouth (LsA1) is connected with the oil-in (D) of control overflow valve far away (4), in described impact connection (21), be also provided with differential pressure compensator (211) and load feedback shuttle valve (212), described differential pressure compensator (211) load feedback mouth (Ls1) joins (21) spool by described impact is connected with described independent load-sensitive outside control mouth (LsA1), described differential pressure compensator (211) load feedback mouth (Ls1) is connected with first oil-in (a) of described load feedback shuttle valve (212), the oil-out of the load feedback shuttle valve of other work connection of second oil-in (b) of described load feedback shuttle valve (212) and described load-sensitive proportional multi-way valve (2) is connected, load feedback shuttle valve (212) oil-out (c) of described impact connection is connected with the load-sensitive mouth (Ls ') of the quick ratio sense of load banked direction control valves (2), the setting value of described control overflow valve far away (4) joins the spool of (21) successively by impact, differential pressure compensator (211), load feedback shuttle valve (212), (Ls ') mouth of load-sensitive proportional multi-way valve (2) feeds back to load-reacting pump (1) load feedback mouth (Ls).
2. hammer drill surge according to claim 1 is far controlled hydraulic circuit, it is characterized in that: the spool flow of described impact connection (21) meets the maximum impact working flow of described hammer drill (3).
3. hammer drill surge according to claim 1 and 2 is far controlled hydraulic circuit, it is characterized in that: described control overflow valve far away (4) can regulate between the high shock pressure of described hammer drill (3) and minimum surge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891258.6U CN203716836U (en) | 2013-12-31 | 2013-12-31 | Impact pressure remote-control hydraulic circuit of jackdrill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891258.6U CN203716836U (en) | 2013-12-31 | 2013-12-31 | Impact pressure remote-control hydraulic circuit of jackdrill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203716836U true CN203716836U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320891258.6U Expired - Lifetime CN203716836U (en) | 2013-12-31 | 2013-12-31 | Impact pressure remote-control hydraulic circuit of jackdrill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203716836U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725523A (en) * | 2017-11-14 | 2018-02-23 | 江苏恒立液压科技有限公司 | Load sensing multi-way valve and there is its engineering machinery |
| CN109306976A (en) * | 2018-11-05 | 2019-02-05 | 无锡市钻通工程机械有限公司 | A kind of load sensitive control system |
| CN112727818A (en) * | 2020-12-25 | 2021-04-30 | 中铁工程装备集团隧道设备制造有限公司 | Hydraulic control system of rock drill |
-
2013
- 2013-12-31 CN CN201320891258.6U patent/CN203716836U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725523A (en) * | 2017-11-14 | 2018-02-23 | 江苏恒立液压科技有限公司 | Load sensing multi-way valve and there is its engineering machinery |
| CN107725523B (en) * | 2017-11-14 | 2023-12-15 | 江苏恒立液压科技有限公司 | Load-sensitive multiway valve and engineering machinery with same |
| CN109306976A (en) * | 2018-11-05 | 2019-02-05 | 无锡市钻通工程机械有限公司 | A kind of load sensitive control system |
| CN112727818A (en) * | 2020-12-25 | 2021-04-30 | 中铁工程装备集团隧道设备制造有限公司 | Hydraulic control system of rock drill |
| CN112727818B (en) * | 2020-12-25 | 2023-03-21 | 中铁工程装备集团隧道设备制造有限公司 | Hydraulic control system of rock drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |