CN205089307U - It freely falls to catching hold of with a hook device hydraulic pressure auxiliary control system to dig rig soon - Google Patents
It freely falls to catching hold of with a hook device hydraulic pressure auxiliary control system to dig rig soon Download PDFInfo
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- CN205089307U CN205089307U CN201520859625.3U CN201520859625U CN205089307U CN 205089307 U CN205089307 U CN 205089307U CN 201520859625 U CN201520859625 U CN 201520859625U CN 205089307 U CN205089307 U CN 205089307U
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Abstract
The utility model relates to an it freely falls to catching hold of with a hook device hydraulic pressure auxiliary control system to dig rig soon belongs to the hydraulic control technology field. The utility model discloses the main poor problem of the ability to ward off risks that has the major loop and cause of solving, it is parallelly connected each other with major loop and assistance return circuit through increasing subsidiary return circuit, guarantee the extra and raise normal work. The utility model discloses a major loop with assist the return circuit, the major loop is with to assist the return circuit parallelly connected each other, the major loop includes first fixed choke valve, an electromagnetic switch valve, first sequence valve, the 2nd electromagnetic switch valve, first adjustable throttle valve and first filter, the throttle valve and the second filter that the assistance return circuit includes that choke valve, the 3rd electromagnetic switch valve, second sequence valve, fourth electromagnetic switch valve are fixed to the second, the second is adjustable. The utility model discloses greatly having improved the ability to ward off risks of system and having helped improving system stability, the rig that digs soon that is fit for having relatively high expectations to hydraulic control system freely falls to catching hold of with a hook the occasion.
Description
Technical field
The utility model relates to rotary drilling rig free off the hook device hydraulic pilot control system, belongs to technical field of hydraulic.
Background technology
For a long time, rotary drilling rig is all a no small difficult problem in the construction of the hard formation such as boulder and cobble, weathered rocks.Except providing suitable drilling tool, better solution is also all being sought by each main frame producer.Because the abrasiveness on this kind of stratum is stronger, so the consumption of drilling bucket bucket tooth can be larger.When there being large boulder in stratum more, waft stone when, bucket tooth is easy to break disconnected.If use heavy impact stake holes, large boulder is smashed, both can accelerate drilling efficiency, indirectly can also protect drilling tool, to ensure hole quality.The major function of rig deeply reaches the pore-forming operation of tens meters, mainly completes by actions such as unit head, master winch, revolutions, and secondary volume every day use is less, is mainly used to auxiliary lifting drill bit, reinforcing cage etc.Therefore on pair volume, increase the function of free off the hook, neither the normal use of the secondary volume of impact, can be again pore-forming operation increases counterweight.But the hydraulic control system ability to ward off risks of existing rotary drilling rig free off the hook device is poor, once there is the fault of component, will serious loss be caused, still lack a kind of device ensureing major loop stability.
Utility model content
The purpose of this utility model is to provide a kind of rotary drilling rig free off the hook device hydraulic pilot control system, mainly solve the problem that only there is the ability to ward off risks difference that major loop causes, by increasing auxiliary loop, by major loop and auxiliary loop parallel with one another, ensure that secondary elevator normally works.
The purpose of this utility model realizes as follows: described rotary drilling rig free off the hook device hydraulic pilot control system, comprise major loop and auxiliary loop, major loop and auxiliary loop parallel with one another, major loop comprises the first fixed restrictive valve, the first electromagnetic switch valve, the first sequence valve, the second electromagnetic switch valve, the first adjustable throttling and the first strainer, and auxiliary loop comprises the second fixed restrictive valve, the 3rd electromagnetic switch valve, the second sequence valve, the 4th electromagnetic switch valve, the second adjustable throttling and the second strainer.
Further, described hydraulic control system also comprises the second strainer, reductor, secondary volume motor, oil pump, the 3rd strainer, overflow valve and open type oil tank.
Further, access first between the oil-out of the first electromagnetic switch valve and the housing oil return opening of reductor and brake overflow valve.
Further, access second between the oil-out of the 3rd electromagnetic switch valve and the housing oil return opening of reductor and brake overflow valve.
Further, the oil-out of oil pump connects the control port of the first fixed restrictive valve oil-in, the first adjustable throttling oil-in, reductor.
Further, the oil-out of the first fixed restrictive valve accesses the first electromagnetic switch valve and the first sequence valve.
Further, the oil-out of the first electromagnetic switch valve and the first adjustable throttling oil-out connect rear access second electromagnetic switch valve.
Further, the oil-out of the first sequence valve and the oil-out of the second electromagnetic switch valve connect the housing oil return opening of rear access reductor.
The clutch of reductor can realize dynamic clutch, can work as brake and use, and when drum speed is too fast, pressure in releasing clutch, namely realize braking, thorough release pressure then realizes braking completely, and stops free off the hook in conjunction with clutch.Pressure in part releasing clutch has been come by the first adjustable throttling in bypass or the second adjustable throttling, namely reduces the speed of free off the hook.Because this is by regulating the hydraulic fluid port amount of opening of choke valve to come, so free off the hook speed is stepless adjustable.Pressure in thorough releasing clutch is then controlled by electromagnetic switch valve, and the pressure at this moment in clutch is logical oil return directly, namely stops the action of free off the hook.
The beneficial effects of the utility model are: described rotary drilling rig free off the hook device hydraulic pilot control system by major loop and auxiliary loop parallel with one another, drastically increase the ability to ward off risks of system and contribute to improving the stability of a system, the free off the hook function that can be rotary drilling rig provides the response time accurately and reliably, and make the decrease speed of free off the hook stepless adjustable, to provide the impact force of different size, adapt to different formation hardness, meet the demand under the different operating mode of user.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present utility model.
In figure: 1, the first fixed restrictive valve; 2, the first electromagnetic switch valve; 3, the first sequence valve; 4, the first braking overflow valve; 5, the second electromagnetic switch valve; 6, the first adjustable throttling; 7, the first strainer; 8, the second fixed restrictive valve; 9, the 3rd electromagnetic switch valve; 10, the second sequence valve; 11, the second braking overflow valve; 12, the 4th electromagnetic switch valve; 13, the second adjustable throttling; 14, the second strainer; 15, reductor; 16, secondary volume motor; 17, oil pump; 18, the 3rd strainer; 19, overflow valve; 20, open type oil tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, described rotary drilling rig free off the hook device hydraulic pilot control system, comprise major loop and auxiliary loop, major loop and auxiliary loop parallel with one another, major loop comprises the first fixed restrictive valve 1, first electromagnetic switch valve 2, first sequence valve 3, second electromagnetic switch valve 5, first adjustable throttling 6 and the first strainer 7, and auxiliary loop comprises the second fixed restrictive valve 8, the 3rd electromagnetic switch valve 9, second sequence valve 10, the 4th electromagnetic switch valve 12, second adjustable throttling 13 and the second strainer 14.
Further, described hydraulic control system also comprises the second strainer 14, reductor 15, secondary volume motor 16, oil pump 17, the 3rd strainer 18, overflow valve 19 and open type oil tank 20; Access first between the oil-out of the first electromagnetic switch valve 2 and the housing oil return opening of reductor 15 and brake overflow valve 4; Access second between the oil-out of the 3rd electromagnetic switch valve 9 and the housing oil return opening of reductor 15 and brake overflow valve 11; The oil-out of oil pump 17 connects the control port of the first fixed restrictive valve 1 oil-in, the first adjustable throttling 6 oil-in, reductor 15; The oil-out of the first fixed restrictive valve 1 accesses the first electromagnetic switch valve 2 and the first sequence valve 3; The oil-out of the first electromagnetic switch valve 2 and the first adjustable throttling 6 oil-out also connect rear access second electromagnetic switch valve 5; The oil-out of the first sequence valve 3 and the oil-out of the second electromagnetic switch valve 5 also connect the housing oil return opening of rear access reductor 15.
Embodiment 2:
As shown in Figure 1, described system comprises major loop, wherein, first fixed restrictive valve 1, first electromagnetic switch valve 2, first sequence valve 3, second electromagnetic switch valve 5 and the first adjustable throttling 6, the oil-out of oil pump 17 connects the first fixed restrictive valve 1 oil-in after the first strainer 7, first adjustable throttling 6 oil-in, the control port of reductor 15, the oil-out of the first fixed restrictive valve 1 accesses the first electromagnetic switch valve 2 and the first sequence valve 3, the oil-out of the first electromagnetic switch valve 2 and the first adjustable throttling 6 oil-out also connect rear access second electromagnetic switch valve 5, the oil-out of the first sequence valve 3 and the oil-out of the second electromagnetic switch valve 5 also connect the housing oil return opening of rear access reductor 15, access first between the oil-out of the first electromagnetic switch valve 2 and the housing oil return opening of reductor 15 and brake overflow valve 4.
Described system also comprises auxiliary loop, wherein, second fixed restrictive valve 8, 3rd electromagnetic switch valve 9, second sequence valve 10, 4th electromagnetic switch valve 12 and the second adjustable throttling 13, the oil-out of oil pump 17 connects the second fixed restrictive valve 8 oil-in after the second strainer 14, second adjustable throttling 13 oil-in, the control port of reductor 15, oil-out access the 3rd electromagnetic switch valve 9 and second sequence valve 10 of the second fixed restrictive valve 8, the oil-out of the 3rd electromagnetic switch valve 9 and the second adjustable throttling 13 oil-out also connect rear access the 4th electromagnetic switch valve 12, the oil-out of the second sequence valve 10 and the oil-out of the 4th electromagnetic switch valve 12 also connect the housing oil return opening of rear access reductor 15, access second between the oil-out of the 3rd electromagnetic switch valve 9 and the housing oil return opening of reductor 15 and brake overflow valve 11.
Major loop and auxiliary loop parallel with one another.
In addition, oil pump 17, overflow valve 19 and reductor 15, reductor 15 auxiliary connection volume motor 16, overflow valve 19 is connected on oil pump 17 oil-out.The inlet port of oil pump 17, the oil return opening of overflow valve 19 connect open type oil tank 20, and the drain tap of reductor 15 connects open type oil tank 20 through oil return the 3rd strainer 18.
Reductor 15 there are control port, housing oil return opening, drain tap, by the piston pressure chamber of reductor 15 clutch, as the opening pressure 60bar of pressure higher than reductor 15 clutch, clutch can be opened completely, when pressure is between 24bar to 60bar, clutch is in quasi integration state, more close to 60bar clutch combine fewer, until open completely; By the housing of reductor 15, be mainly used to as the oil return of free off the hook hydraulic system and cool for reductor 15 housing rinses.By the pressure controlled exactly, the switch of free off the hook, decrease speed and braking time can be controlled.
Auxiliary loop is identical with major loop operating principle.For major loop:
When the first electromagnetic switch valve 2 and the second electromagnetic switch valve 5 are in off-position, the setting pressure of the first sequence valve 3 is 60bar, and the setting pressure of the first braking overflow valve 4 is 24bar, and the first adjustable throttling 6 is in closed condition.The fluid of oil pump 17 oil-out is by directly arriving hydraulic fluid port after the first fixed restrictive valve 1, first electromagnetic switch valve 2 and the second electromagnetic switch valve 5, namely the direct housing through reductor 15 gets back to open type oil tank 20, this process only has the first fixed restrictive valve 1 to produce pressure reduction, but pressure reduction only has about 5bar, the pressure of hydraulic fluid port is the pressure reduction that the first fixed restrictive valve 1 is formed relative to oil return opening, its value is much smaller than the clutch opening pressure of reductor 15, clutch is in closure state, and secondary volume can normally hoist and decline.
When the first electromagnetic switch valve 2 and the second electromagnetic switch valve 5 are in "on" position, the setting pressure of the first sequence valve 3 is 60bar, and the setting pressure of the first braking overflow valve 4 is 24bar, and the first adjustable throttling 6 is in closed condition.The fluid of oil pump 17 oil-out, by directly arriving the hydraulic fluid port of reductor 15 after the first fixed restrictive valve 1 and the first sequence valve 3, gets back to open type oil tank 20 by case drain mouth.Pressure before the first sequence valve 3 is 60bar, hydraulic fluid port pressure is just higher than the opening pressure of clutch, clutch separation, open free off the hook function, the fluid of oil pump 17 oil-out has also assigned to the first adjustable throttling 6, now the first adjustable throttling 6 is closed completely, and clutch is opened completely, and the speed of free off the hook is the fastest.If open the first adjustable throttling 6, some fluid is not through the just directly oil return of the first sequence valve 3, namely the pressure before the first sequence valve 3 some released in bypass by the first adjustable throttling 6, pressure now before the first sequence valve 3 is just not enough to the clutch opening reductor 15 completely, clutch is in quasi integration state, the speed of free off the hook will reduce, and the valve oil mouth aperture along with the first adjustable throttling 6 increases and reduces, so just can by the speed of the stepless free off the hook of adjustment of the first adjustable throttling 6.
Second electromagnetic switch valve 5 be energized time there is one-way conduction function, the one way valve of electricity consumption magnet end position represents the direction of one-way conduction in the drawings.After the first sequence valve 3, fluid can lead to the first braking overflow valve 4.Can set like this control of the first electromagnetic switch valve 2 and the second electromagnetic switch valve 5 in the controller of rotary drilling rig: when receiving the instruction that free off the hook is opened, first electromagnetic switch valve 2 and the second electromagnetic switch valve 5 are energized simultaneously, set up pressure in systems in which, after pressure is increased to 60bar, first sequence valve 3 is just opened, form oil return line, open the action of free off the hook; When receiving the instruction that free off the hook is closed, the first power-off of first electromagnetic switch valve 2, second electromagnetic switch valve 5 power-off after 3 seconds, in these 3 seconds, the hydraulic fluid port pressure of reductor 15 can only be released by the first braking overflow valve 4, and the setting pressure of the first braking overflow valve 4 is 24bar, in 3 seconds, the pressure of oil port at least also has 24bar, pressure will release rapidly afterwards, and clutch will combine rapidly, stops free off the hook.The setting pressure of overflow valve 4 can be braked like this, the hydraulic fluid port pressure of reductor 15, indirectly adjustable brake time when regulating free off the hook to stop by adjustment first.Hydraulic fluid port pressure is larger, and braking time is longer, otherwise braking time shortens.The setting pressure of the first braking overflow valve is decided to be 24bar, can meet the requirement of most of user to braking time, as changed braking time, readjust the pressure of the first braking overflow valve 4.
During first use, need to demarcate the pressure of the first sequence valve 3, scope between 55bar to 60bar, to ensure that the clutch of reductor 15 can be opened completely.Also will reaching of other first adjustable overflow valve 6 is maximum, under lower free off the hook speed, carry out test run, ensures construction safety.By regulating the first braking overflow valve 4 and the first adjustable overflow valve 6, the requirement to free off the hook speed and braking time of different user and different geological condition can be met.
Certainly, foregoing is only preferred embodiment of the present utility model, can not be considered to for limiting scope of embodiments of the present utility model.The utility model is not limited in above-mentioned citing, and equalization change and improvement etc. that those skilled in the art make in essential scope of the present utility model, all should belong in patent covering scope of the present utility model.
Claims (8)
1. a rotary drilling rig free off the hook device hydraulic pilot control system, it is characterized in that: comprise major loop and auxiliary loop, major loop and auxiliary loop parallel with one another, major loop comprises the first fixed restrictive valve (1), first electromagnetic switch valve (2), first sequence valve (3), second electromagnetic switch valve (5), first adjustable throttling (6) and the first strainer (7), auxiliary loop comprises the second fixed restrictive valve (8), 3rd electromagnetic switch valve (9), second sequence valve (10), 4th electromagnetic switch valve (12), second adjustable throttling (13) and the second strainer (14).
2. rotary drilling rig according to claim 1 free off the hook device hydraulic pilot control system, is characterized in that: described hydraulic control system also comprises the second strainer (14), reductor (15), secondary volume motor (16), oil pump (17), the 3rd strainer (18), overflow valve (19) and open type oil tank (20).
3. rotary drilling rig according to claim 1 free off the hook device hydraulic pilot control system, is characterized in that: access first between the oil-out of the first electromagnetic switch valve (2) and the housing oil return opening of reductor (15) and brake overflow valve (4).
4. rotary drilling rig according to claim 1 free off the hook device hydraulic pilot control system, is characterized in that: access second between the oil-out of the 3rd electromagnetic switch valve (9) and the housing oil return opening of reductor (15) and brake overflow valve (11).
5. rotary drilling rig according to claim 2 free off the hook device hydraulic pilot control system, is characterized in that: the oil-out of oil pump (17) connects the control port of the first fixed restrictive valve (1) oil-in, the first adjustable throttling (6) oil-in, reductor (15).
6. rotary drilling rig according to claim 1 free off the hook device hydraulic pilot control system, is characterized in that: the oil-out of the first fixed restrictive valve (1) accesses the first electromagnetic switch valve (2) and the first sequence valve (3).
7. rotary drilling rig according to claim 1 free off the hook device hydraulic pilot control system, is characterized in that: the oil-out of the first electromagnetic switch valve (2) and the first adjustable throttling (6) oil-out also connect rear access second electromagnetic switch valve (5).
8. rotary drilling rig according to claim 1 free off the hook device hydraulic pilot control system, is characterized in that: the oil-out of the first sequence valve (3) and the oil-out of the second electromagnetic switch valve (5) also connect the housing oil return opening of rear access reductor (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520859625.3U CN205089307U (en) | 2015-10-30 | 2015-10-30 | It freely falls to catching hold of with a hook device hydraulic pressure auxiliary control system to dig rig soon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520859625.3U CN205089307U (en) | 2015-10-30 | 2015-10-30 | It freely falls to catching hold of with a hook device hydraulic pressure auxiliary control system to dig rig soon |
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| Publication Number | Publication Date |
|---|---|
| CN205089307U true CN205089307U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520859625.3U Expired - Fee Related CN205089307U (en) | 2015-10-30 | 2015-10-30 | It freely falls to catching hold of with a hook device hydraulic pressure auxiliary control system to dig rig soon |
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| Country | Link |
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| CN (1) | CN205089307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108161051A (en) * | 2018-02-06 | 2018-06-15 | 华侨大学 | magnetic field auxiliary plane drilling device |
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2015
- 2015-10-30 CN CN201520859625.3U patent/CN205089307U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108161051A (en) * | 2018-02-06 | 2018-06-15 | 华侨大学 | magnetic field auxiliary plane drilling device |
| CN108161051B (en) * | 2018-02-06 | 2023-09-29 | 华侨大学 | Magnetic field auxiliary plane drilling equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160316 Termination date: 20171030 |