CN103527562A - Oil-replenishing-pressure-adjustable hydraulic oil replenishing device of rotary motor of rotary drilling rig - Google Patents

Oil-replenishing-pressure-adjustable hydraulic oil replenishing device of rotary motor of rotary drilling rig Download PDF

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Publication number
CN103527562A
CN103527562A CN201310540733.XA CN201310540733A CN103527562A CN 103527562 A CN103527562 A CN 103527562A CN 201310540733 A CN201310540733 A CN 201310540733A CN 103527562 A CN103527562 A CN 103527562A
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China
Prior art keywords
oil
motor
repairing
replenishing
valve
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CN201310540733.XA
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Chinese (zh)
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CN103527562B (en
Inventor
饶治国
湛良传
腾召金
马少焱
何祥华
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恒天九五重工有限公司
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Publication of CN103527562A publication Critical patent/CN103527562A/en
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Abstract

Disclosed is an oil-replenishing-pressure-adjustable hydraulic oil replenishing device of a rotary motor of a rotary drilling rig. The oil-replenishing-pressure-adjustable hydraulic oil replenishing device is installed among a main valve, a main rolling motor (4) and an auxiliary rolling motor (5) and comprises a motor (M), an oil replenishing pump (1), an oil replenishing filter (2) and an oil replenishing valve block (3). The motor (M) is connected with the oil replenishing pump (1) through a coupler, one end of the oil replenishing pump (1) is connected with an oil tank, the other end of the oil replenishing pump (1) is connected with an oil replenishing inlet (p) of the oil replenishing valve block (3) through the oil replenishing filter (2), an oil replenishing outlet (S) of the oil replenishing valve block (3) is connected to the position of an oil inlet of an overload overflow valve of the main rolling motor (4) and the position of an oil inlet of an overload overflow valve of the auxiliary rolling motor (5) in parallel and a return oil inlet (p1) of the oil replenishing valve block is connected with an oil return port (T1) of the main valve ; an overflow outlet (T) of the oil replenishing valve block is connected with the oil tank. The oil replenishing device lowers the air suction probability of the motor, can adjust the differential pressure of an oil replenishing port of a rotary motor to a certain degree, improves the reliability of an oil replenishing system, cannot improve the cost obviously and is convenient to repair.

Description

A kind of adjustable hydraulic pressure recharging oil device of oil compensation pressure of Operation of Rotary Pile Drill motor
Technical field
The present invention relates to a kind of hydraulic pressure recharging oil device in piling machinery field, be specifically related to a kind of rotary motor oil circuit recharging oil device of rotary drilling rig, belong to rotary motor repairing technical field.
Background technique
Rotary drilling rig is widely used in the various bored pile construction engineerings such as highway bridge, urban construction.Rotary drilling rig adopts unit head form, coordinates different drilling tools can realize the pore-forming operation of Different Strata.The quality of Construction Machinery System performance depends on the quality of hydraulic performance, and the quality of hydraulic system performance whether take in system the good and bad and selected fundamental circuit of element quality used be appropriately prerequisite.In the car load hydraulic system of rotary drilling rig, oil return system is a key factor that affects vehicle performance, makes the hydraulic oil circulation of car load hydraulic system unobstructed.
Because the equipment quality of rotary drilling rig is larger, as drilling rod, drilling bucket, add that the gross masses such as the fetching earth cubic meter of stone are over 20 tons, transfer tremble native process with left-right rotation in because equipment quality is large thereby have larger inertia, main valve still has impact after closing, now equipment can still rotate with original speed and direction because inertia drives motor, cause motor output circuit one side to be evacuated, there is emptying phenomenon, reduce motor working life, the effect of recharging oil device is to inhaling an empty side repairing, prevents the appearance of emptying phenomenon and damages motor.
The first form of existing recharging oil device as shown in Figure 1, with a pair of overload relief valve, be connected in the opposite direction on the oil circuit on master file motor 4 motors and secondary volume motor 5 both sides, when one side oil circuit overload and another side oil circuit while producing negative pressure, corresponding overload relief valve is opened, form short circuit, oil-feed and the oil return of hydraulic motor are circulated voluntarily, thereby making to transship oil circuit is cushioned, negative-pressure oil line obtains repairing.Its deficiency is to transship relief valve and need to transships more than oil circuit end boosts to overload relief valve work pressure limiting, needs approximately 0.2 second time, and the relief valve that now transships just can be opened, and starts to negative-pressure oil line repairing.This period is called the lag period.
The second form of existing recharging oil device is to utilize the oil return of main valve self as repairing oil sources, and its deficiency mainly contains:
If 1, after main pump, main valve are closed completely, drilling rod goes out item and slips the phenomenons such as bar, now master file motor 4 motors there will be to rotate and then cause and inhale emptyly, and repairing oil sources can be mended without oil, causes motor cavitation erosion and earlier period damage;
2, because pressure and its flow of main valve oil return are proportional, when discharge of main pump changes greatly, oil compensation pressure also can change in a big way, cause oil compensation pressure unstable, and then cause normally engaged brake braking moment to decline, cause the unexpected even problem such as slide bar of bar of slipping;
3, oil compensation pressure can not regulate, and causes oil compensation pressure and other setting pressure well not to mate.
Summary of the invention
The problem existing for above-mentioned prior art, object of the present invention mainly solves main pump, main valve close after, the problem that master file motor can not repairing when drilling rod occurs slipping bar, solve oil compensation pressure and operate speed variation and unsettled problem with discharge of main pump and operator, the condition that the object that should reach repairing can not impact to other valve in system again, oil compensation pressure must can regulate in certain scope.
The present invention realizes like this, a kind of adjustable hydraulic pressure recharging oil device of oil compensation pressure of Operation of Rotary Pile Drill motor, it is arranged between main valve, master file motor motor, secondary volume motor, comprise motor, slippage pump, repairing filter, Fill valve piece, described Fill valve piece has repairing entrance, oil return entrance, repairing outlet and overflow outlet; Described motor is connected with slippage pump through coupling, one end connected tank of described slippage pump, the other end connects the repairing entrance of Fill valve piece through repairing filter, the filler opening place of the repairing outlet access in parallel master file motor of described Fill valve piece and the overload relief valve of secondary volume motor, and through overload relief valve, be connected on the oil circuit on both sides of master file motor or secondary volume motor respectively, described Fill valve piece is connected with overflow fuel tank by overflow outlet.
Further, described Fill valve piece comprises main repairing passage, oil return repairing passage and the overflow ducts being connected in parallel, wherein on main repairing passage, be provided with the first one-way valve, the entry end of described the first one-way valve connects repairing entrance, and the outlet end of described the first one-way valve connects repairing outlet; On described oil return repairing passage, be provided with the second one-way valve, one end of described the second one-way valve connects oil return entrance, and the other end connects main repairing passage; On described overflow ducts, be provided with adjustable relief valve, the entry end of adjustable relief valve connects main repairing passage, and outlet end connects overflow outlet; Described being connected in parallel refers to that outlet end, the outlet end of the second one-way valve and the entry end of adjustable relief valve of the first one-way valve are connected in parallel;
Further, the oil return access port of described Fill valve piece is connected with the return opening of main valve.
Further, described main repairing passage is provided with pressure relay, and this pressure relay is connected with control gear.
Further, on described Fill valve piece, be also provided with accumulator, this accumulator is connected with main repairing passage by pipeline.
The invention has the beneficial effects as follows: this device has solved the deficiency of the existing recharging oil device of rotary drilling rig, with less cost, increase, improved the working life of the valuable crucial hydraulic element such as major and minor volume motor, can prevent that the problems such as bar, slide bar from appearring slipping in drilling rod, thereby improve the Safety performance of rotary drilling rig, avoid the generation of serious accident.
Accompanying drawing explanation
Fig. 1 is the overload repairing schematic diagram of prior art.
Fig. 2 is the repairing schematic diagram of the embodiment of the present invention.
Reference character in above-mentioned figure:
1 slippage pump, 2 filters, 3 Fill valve pieces, 3.1 adjustable relief valves, 3.2 second one-way valves, 3.3 first one-way valves, 4 master file motors, 5 secondary volume motors
Embodiment
Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 2, the annexation between each element of the hydraulic pressure recharging oil device of rotary drilling rig of the present invention is as follows: motor M is connected with slippage pump 1 by coupling, and the fluid entrance of slippage pump 1 is connected with fuel tank by pipeline.The fluid outlet of slippage pump 1 is passed through filter 2 by pipeline and is connected with the repairing entrance P of Fill valve piece 3.Described Fill valve piece 3 has repairing entrance P, repairing outlet S, oil return entrance P 1with oil spilling outlet T.Described Fill valve piece 3 comprises the main repairing passage being connected in parallel, oil return repairing passage and overflow ducts.Wherein on main repairing passage, be provided with the first one-way valve 3.3, the entry end of described the first one-way valve 3.3 connects repairing entrance P, and the outlet end of described the first one-way valve 3.3 connects repairing outlet S; On described oil return repairing passage, be provided with the second one-way valve 3.2, one end of described the second one-way valve 3.2 connects oil return entrance P 1, the other end connects main repairing passage; On described overflow ducts, be provided with adjustable relief valve 3.1, the entry end of adjustable relief valve 3.1 connects main repairing passage, and outlet end connects overflow outlet T; Described being connected in parallel refers to that the entry end of the outlet end of the first one-way valve 3.3, the outlet end of the second one-way valve 3.2 and adjustable relief valve 3.1 is connected in parallel; The repairing entrance P of described Fill valve piece is connected with the outlet of repairing filter 2, the oil return entrance P of described Fill valve piece 3 1connect main valve oil return inlet T 1.The repairing outlet S of described Fill valve piece is by the overload relief valve entrance of the master file motor 4 that is connected in parallel and the overload relief valve entrance of secondary volume motor 5, and the outlet of described master file motor overload relief valve, secondary volume motor overload relief valve is connected with the main oil-feed oil circuit in both sides of master file motor 4, secondary volume motor 5, main fuel-displaced oil circuit respectively.In addition, before the repairing of the repairing main passage of Fill valve piece 3 outlet S, a pressure relay can be set, to control the work of slippage pump according to pressure.In addition, before the repairing of described Fill valve piece 3 outlet S, also can be provided with an accumulator, this accumulator is connected with the repairing main passage in Fill valve piece 3.
Preferably, in order to increase the instantaneous repairing amount of master file motor 4, secondary volume motor 5, before the oil circuit point in parallel of master file motor 4, secondary volume motor 5, increase a set of same recharging oil device, two cover recharging oil devices move simultaneously again.
The working principle of above-mentioned recharging oil device is, after engine start, slippage pump 1 is started working, and exports a metastable flow to filter 2, and hydraulic oil enters Fill valve piece 3 after filtering.The effect of the adjustable relief valve 3.1 of Fill valve piece 3 is mainly to stablize oil compensation pressure; general setting value is 1.0-1.2MPa; in system debug process, oil compensation pressure is regulated; to guarantee to obtain a suitable oil compensation pressure value; the effect of the second one-way valve 3.2 is that main valve oil return is introduced to Fill valve piece 3; when the repairing flow that needs when system is larger, open one-way valve extra repairing flow is provided; the effect of the first one-way valve 3.3 is protection slippage pumps, prevents that it is subject to outside and damages compared with the impact of large pressure.Fill valve piece 3 exports by repairing the repairing entrance that S is delivered to master file motor 4 motors, secondary volume motor 5 by the oil of steady pressure.
This recharging oil device has reduced motor and has inhaled empty probability, pressure reduction that to a certain extent can condition rotary motor repairing mouth, improved the reliability of oil-supplementing system, can obviously not raise the cost again, easy to maintenance, this has solved the deficiency of the existing recharging oil device of rotary drilling rig simultaneously, with less cost, increase, improved the working life of the valuable crucial hydraulic element such as major and minor volume motor, can prevent that the problems such as bar, slide bar from appearring slipping in drilling rod, thereby improve the Safety performance of rotary drilling rig, avoid the generation of serious accident.

Claims (5)

1. the adjustable hydraulic pressure recharging oil device of the oil compensation pressure of an Operation of Rotary Pile Drill motor, it is arranged on main valve, master file motor (4), the secondary volume between motor (5) of rotary drilling rig hydraulic system, it is characterized in that, comprise motor (M), slippage pump (1), repairing filter (2), Fill valve piece (3), described Fill valve piece (3) has repairing entrance (P), oil return entrance (P1), repairing outlet (S) and overflow outlet (T);
Described motor (M) is connected with slippage pump (1) through coupling, one end connected tank of described slippage pump (1), the other end connects the repairing entrance (P) of Fill valve piece (3) through repairing filter (2), the filler opening place of repairing outlet (S) the access in parallel master file motor (4) of described Fill valve piece (3) and the relief valve of secondary volume motor (5), and through relief valve, be connected on the oil circuit on both sides of master file motor (4) and secondary volume motor (5) respectively, described Fill valve piece (3) exports (T) by overflow and is connected with overflow fuel tank, the oil compensation pressure of described Fill valve piece (3) can regulate within the scope of 1.0-1.2MPa.
An Operation of Rotary Pile Drill motor as claimed in claim 1 the adjustable hydraulic pressure recharging oil device of oil compensation pressure, it is characterized in that, described Fill valve piece (3) comprises main repairing passage, oil return repairing passage and the overflow ducts being connected in parallel, wherein on main repairing passage, be provided with the first one-way valve (3.3), the entry end of described the first one-way valve (3.3) connects repairing entrance (P), and the outlet end of described the first one-way valve (3.3) connects repairing outlet (s); On described oil return repairing passage, be provided with the second one-way valve (3.2), one end of described the second one-way valve (3.2) connects oil return entrance (P1), the other end main repairing passage that is connected in parallel; On described overflow ducts, be provided with adjustable relief valve (3.1), the entry end of adjustable relief valve (3.1) connects main repairing passage, outlet end connects overflow outlet (T), described in be connected in parallel and refer to that the entry end of the outlet end of the first one-way valve (3.3), the outlet end of the second one-way valve (3.2) and adjustable relief valve (3.1) is connected in parallel.
Operation of Rotary Pile Drill motor as claimed in claim 1 the adjustable hydraulic pressure recharging oil device of oil compensation pressure, it is characterized in that, the oil return access port (P1) of described Fill valve piece (3) is connected with the return opening (T1) of main valve.
Operation of Rotary Pile Drill motor as claimed in claim 1 the adjustable hydraulic pressure recharging oil device of oil compensation pressure, it is characterized in that, described main repairing passage is provided with pressure relay, this pressure relay is connected with control gear.
Operation of Rotary Pile Drill motor as claimed in claim 1 the adjustable hydraulic pressure recharging oil device of oil compensation pressure, it is characterized in that, on described Fill valve piece (3), be also provided with accumulator, this accumulator is connected with main repairing passage by pipeline.
CN201310540733.XA 2013-11-04 2013-11-04 A kind of adjustable hydraulic pressure recharging oil device of oil compensation pressure of Operation of Rotary Pile Drill motor CN103527562B (en)

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CN201310540733.XA CN103527562B (en) 2013-11-04 2013-11-04 A kind of adjustable hydraulic pressure recharging oil device of oil compensation pressure of Operation of Rotary Pile Drill motor

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101230870A (en) * 2008-02-19 2008-07-30 湖南三一起重机械有限公司 Flow-control module of crane executing mechanism
US20080245222A1 (en) * 2006-12-20 2008-10-09 Sauer-Danfoss Aps Hydraulic valve arrangement
CN201972595U (en) * 2010-10-20 2011-09-14 同济大学 Rotary drilling rig energy-recuperation hydraulic device
CN202789784U (en) * 2012-08-09 2013-03-13 郑州新大方重工科技有限公司 Hydraulic system with fine adjustment function
CN202924661U (en) * 2012-12-03 2013-05-08 中联重科股份有限公司 Hydraulic system of hoisting mechanism and crane
CN203048476U (en) * 2013-01-17 2013-07-10 中联重科股份有限公司 Hydraulic winch control system and engineering machinery
CN203584959U (en) * 2013-11-04 2014-05-07 恒天九五重工有限公司 Oil-replenishing-pressure-adjustable hydraulic oil replenishing device of rotary motors of rotary drilling rig

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080245222A1 (en) * 2006-12-20 2008-10-09 Sauer-Danfoss Aps Hydraulic valve arrangement
CN101230870A (en) * 2008-02-19 2008-07-30 湖南三一起重机械有限公司 Flow-control module of crane executing mechanism
CN201972595U (en) * 2010-10-20 2011-09-14 同济大学 Rotary drilling rig energy-recuperation hydraulic device
CN202789784U (en) * 2012-08-09 2013-03-13 郑州新大方重工科技有限公司 Hydraulic system with fine adjustment function
CN202924661U (en) * 2012-12-03 2013-05-08 中联重科股份有限公司 Hydraulic system of hoisting mechanism and crane
CN203048476U (en) * 2013-01-17 2013-07-10 中联重科股份有限公司 Hydraulic winch control system and engineering machinery
CN203584959U (en) * 2013-11-04 2014-05-07 恒天九五重工有限公司 Oil-replenishing-pressure-adjustable hydraulic oil replenishing device of rotary motors of rotary drilling rig

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