CN202510434U - Impact resistant tensioning hydraulic system and rotary drilling rig - Google Patents

Impact resistant tensioning hydraulic system and rotary drilling rig Download PDF

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Publication number
CN202510434U
CN202510434U CN 201120503155 CN201120503155U CN202510434U CN 202510434 U CN202510434 U CN 202510434U CN 201120503155 CN201120503155 CN 201120503155 CN 201120503155 U CN201120503155 U CN 201120503155U CN 202510434 U CN202510434 U CN 202510434U
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CN
China
Prior art keywords
hydraulic
oil
valve
tensioning
interface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201120503155
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Chinese (zh)
Inventor
王庆林
许宏宇
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Beijing Sany Heavy Machinery Co Ltd
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Beijing Sany Heavy Machinery Co Ltd
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Filing date
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Priority to CN 201120503155 priority Critical patent/CN202510434U/en
Application granted granted Critical
Publication of CN202510434U publication Critical patent/CN202510434U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides an impact resistant tensioning hydraulic system and a rotary drilling rig. The hydraulic system comprises a tensioning oil cylinder, a reversing device, a pressurizing device and an energy storage, wherein the tensioning oil cylinder comprises a first connector and a second connector, and maintains a predetermined tensioning degree during work; the reversing device comprises an oil inlet, an oil return opening, a first working oil opening and a second working oil opening; two oil inlets of the pressurizing device are connected with the first working oil opening and the first connector, respectively, and two oil outlets of the pressurizing device are connected with the second working oil opening and the second connector, respectively; and the energy storage is connected with an oil path between the pressurizing device and the second connector, and when the pressure of a hydraulic oil of the oil path is greater than the working pressure of the energy storage, the hydraulic oil flows into the energy storage. According to the impact resistant tensioning hydraulic system provided by the utility model, hydraulic impact can be absorbed and released, and the impact resistant tensioning hydraulic system provided by the utility model has the advantages of excellent impact resistant performance, reliable layout, reasonable design of the pipeline and the like.

Description

A kind of protecting against shock tensioning hydraulic system and rotary drilling rig
Technical field
The utility model relates generally to hydraulic pressure and engineering machinery field, particularly a kind of protecting against shock tensioning hydraulic system, and the rotary drilling rig that comprises this protecting against shock tensioning hydraulic system.
Background technique
Tensioning hydro-cylinder will carry out oil circuit locking in the course of the work, to keep the tension force of locking back tensioning hydro-cylinder.As far as hydraulic element, not only require it to have pressurize ability preferably, also require it to have enough anti-hydraulic shock abilities.
Tensioning hydro-cylinder with rotary drilling rig is an example, because it receives all kinds of external impacts through regular meeting in the course of the work, thereby can impact being locked in in-oil cylinder hydraulic fluid pressure.If can not effectively avoid to such impact, possibly cause damage to hydraulic element, have a strong impact on the normal operation of system, even can produce security incident.
Along with the increasing demand of job site to engineering machinery increases, also increasingly high to its performance demands.Therefore, how realizing a kind of tensioning hydraulic system that prevents external impact and have enough pressurize abilities, to satisfy the increasing performance requirement of user, is the technical problem that those skilled in the art need to be resolved hurrily.
The model utility content
The utility model aims to provide a kind of protecting against shock tensioning hydraulic system, and this system can effectively solve the too high problem of hydraulic circuit compression shock.
The protecting against shock tensioning hydraulic system of the utility model comprises:
Tensioning hydro-cylinder, said tensioning hydro-cylinder comprise first interface and second interface, keep preset rate of tension when said tensioning hydro-cylinder is worked;
Reversing arrangement, said reversing arrangement comprise filler opening, return opening, first actuator port and second actuator port;
Pressurizer, two filler openings of said pressurizer connect first actuator port and first interface respectively, and two oil outlets of said pressurizer connect second actuator port and second interface respectively;
Accumulator, said accumulator connects the oil circuit between the pressurizer and second interface, and when this oil circuit hydraulic fluid pressure during greater than the working pressure of accumulator, hydraulic oil flow is in accumulator.
Further, said pressurizer is bidirectional balanced valve, and the hydraulic fluid pressure that gets into said first interface is during greater than the cracking pressure of bidirectional balanced valve, the said second interface oil return; The hydraulic fluid pressure that gets into said second interface is during greater than the cracking pressure of bidirectional balanced valve, the said first interface oil return.
Further, said bidirectional balanced valve comprises:
First one-way valve and first sequence valve of parallel connection; And
Second one-way valve and second sequence valve of parallel connection, the hydraulic oil that gets into first one-way valve feeds back to the feedback end of second sequence valve, and the hydraulic oil that gets into second one-way valve feeds back to the feedback end of first sequence valve.
Further, said bidirectional balanced valve also comprises:
The 3rd one-way valve and the first throttle plug of parallel connection, the hydraulic oil that gets into first one-way valve feeds back to the feedback end of second sequence valve through said the 3rd one-way valve;
The 4th one-way valve and second orifice plug of parallel connection, the hydraulic oil that gets into second one-way valve feeds back to the feedback end of first sequence valve through said the 4th one-way valve.
Further, the cracking pressure of said bidirectional balanced valve is 300~500 bar.
Further, said second interface is arranged at rod chamber one side of said tensioning hydro-cylinder.
Further, also comprise:
Relief valve, said relief valve connects the oil circuit that gets into accumulator, and during greater than the cracking pressure of relief valve, hydraulic oil flow is to fuel tank at the hydraulic fluid pressure of this oil circuit.
Further, also comprise:
Pressure gauge, said pressure gauge is connected in the oil circuit between accumulator and the relief valve, is used to show the hydraulic fluid pressure of this oil circuit.
Another aspect according to the utility model also provides a kind of rotary drilling rig, and this rotary drilling rig comprises aforesaid protecting against shock tensioning hydraulic system.
The utility model can guarantee the rate of tension of tensioning hydro-cylinder through the locking effect of pressurizer, and the impact energy can absorb tensioning hydro-cylinder work through accumulator the time.Compared with prior art, the utility model can absorb and slow down hydraulic shock, has good impact resistance; In addition, the utility model can be avoided causing because of being hit hydraulic element are damaged, and has advantages such as pipe-line layout is reliable, reasonable in design.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the hydraulic schematic diagram of the utility model one embodiment's protecting against shock tensioning hydraulic system;
Fig. 2 is the hydraulic schematic diagram of the utility model one embodiment's pressurizer.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technological scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Shown in Figure 1 is the hydraulic schematic diagram of the utility model one embodiment's protecting against shock tensioning hydraulic system, and this tensioning hydraulic system can be applied in the engineering machinery such as rotary drilling rig.As can be seen from Figure 1, the protecting against shock tensioning hydraulic system of the utility model comprises tensioning hydro-cylinder 1, pressurizer 2 and accumulator 3 at least.
Wherein tensioning hydro-cylinder 1 comprises first interface and second interface, keeps preset rate of tension during tensioning hydro-cylinder 1 work.One of them of first interface and second interface can be connected rod chamber, and another then connects rodless cavity.The variation of the turnover oil direction of first interface and second interface is controlled (not shown) by reversing arrangement.This reversing arrangement comprises filler opening, return opening, first actuator port and second actuator port, and this reversing arrangement can be like valve arrangements such as three-position four-way valves.
Two filler openings of pressurizer 2 connect first actuator port and first interface respectively, and two oil outlets of pressurizer 2 connect second actuator port and second interface respectively.Should be understood that the filler opening of aforementioned indication pressurizer 2 and oil outlet are for one of them mobile status of tensioning hydro-cylinder 1, form the oil-feed tube chamber between two filler openings, form fuel-displaced tube chamber between two oil outlets.
This pressurizer 2 can be like structures such as hydraulic lock, bidirectional balanced valves.Preferred pressurizer 2 is bidirectional balanced valve, and the hydraulic fluid pressure that gets into first interface is during greater than the cracking pressure of bidirectional balanced valve, the second interface oil return; The hydraulic fluid pressure that gets into second interface is during greater than the cracking pressure of bidirectional balanced valve, the first interface oil return.
Shown in Figure 2 is the hydraulic schematic diagram of the utility model one embodiment's pressurizer, and this pressurizer 2 is bidirectional balanced valve.With the state of rodless cavity oil-feed shown in Figure 1, this bidirectional balanced valve comprises two filler opening A1, A2 and two oil outlet B1, B2.Wherein A2 connects first interface, and B1 connects second interface.
Particularly, this bidirectional balanced valve comprises first one-way valve 21 and first sequence valve 25 of parallel connection, and second one-way valve 22 and second sequence valve 26 of parallel connection.Wherein, the hydraulic oil that gets into first one-way valve 21 feeds back to the feedback end of second sequence valve 26, and the hydraulic oil that gets into second one-way valve 22 feeds back to the feedback end of first sequence valve 25.During greater than the cracking pressure of sequence valve, the spool of sequence valve is opened at the hydraulic fluid pressure of each feedback end, and the hydraulic oil in the oil cylinder corresponding chambers flows out.Should be understood that on the oil circuit at aforementioned each parallelly connected sequence valve and one-way valve place, the flow direction of hydraulic oil is opposite.
In addition, this bidirectional balanced valve can also comprise the 3rd one-way valve 23 and first throttle plug 27 of parallel connection, and the 4th one-way valve 24 and second orifice plug 28 of parallel connection.Wherein, the hydraulic oil that gets into first one-way valve 21 feeds back to the feedback end of second sequence valve 26 through the 3rd one-way valve 23; The hydraulic oil that gets into second one-way valve 22 feeds back to the feedback end of first sequence valve 25 through the 4th one-way valve 24.When each feedback end hydraulic fluid pressure was big, hydraulic oil can pass through each orifice plug adverse current stably.
On the basis of technique scheme, the utility model can all form back pressure in the both sides of tensioning hydro-cylinder 1 piston rod, and when state of rest, this bidirectional balanced valve can be locked piston rod.
For adapting to the applying working condition of rotary drilling rig, the cracking pressure of preferred bidirectional balanced valve is 300~500 bar.Particularly, first sequence valve 25 of bidirectional balanced valve is identical with the cracking pressure of second sequence valve 26, and is 300~500 bar.More preferably the cracking pressure of bidirectional balanced valve is 400 bar.
The accumulator 3 of the utility model connects the oil circuit between the pressurizers 2 and second interface, and when this oil circuit hydraulic fluid pressure during greater than the working pressure of accumulator 3, hydraulic oil flow is in accumulator 3.This second interface both can be arranged at tensioning hydro-cylinder 1 rod chamber one side, also can be arranged at tensioning hydro-cylinder 1 rodless cavity one side.For rotary drilling rig, preferably the former.
With bidirectional balanced valve shown in Figure 2 is example, and accumulator 3 is connected in the oil circuit between the oil outlet B1 and second interface.This accumulator 3 can be when tensioning hydro-cylinder 1 receives external impact, with the energy in the system change into compression can or potential energy store, absorb and slow down hydraulic shock, guarantee that whole system pressure is normal.The accumulator of various structures such as spring loaded accumulator, weighted accumulator and gas type accumulator all can be realized the technique effect of the utility model, and the utility model is not limited to this.
As an embodiment, the utility model can also comprise relief valve 4, and relief valve 4 connects the oil circuit that gets into accumulators 3, and during greater than the cracking pressure of relief valve 4, hydraulic oil flow is to fuel tank at the hydraulic fluid pressure of this oil circuit.Relief valve 4 can guarantee that through oil sump tank that unnecessary flow is overflow the interior hydraulic fluid pressure of chamber at second interface place is stablized.In addition, in order to show the hydraulic fluid pressure on the oil circuit, so that operator's normal operation and maintenance, the utility model can also comprise pressure gauge 5, and this pressure gauge 5 is connected in the oil circuit between accumulator 3 and the relief valve 4.
Except aforementioned protecting against shock tensioning hydraulic system, the utility model also provides a kind of rotary drilling rig that comprises this protecting against shock tensioning hydraulic system.Other structure of this rotary drilling rig is with reference to existing technology, and this paper repeats no more at this.
In sum, the utility model can guarantee the rate of tension of tensioning hydro-cylinder 1 through the locking effect of pressurizer 2, and the impact energy can absorb tensioning hydro-cylinders 1 work through accumulator 3 time.Compared with prior art, the utlity model has following advantage:
1) impact resistance is good
The utility model can withstand shocks when causing hydraulic fluid pressure to increase at tensioning hydro-cylinder 1; Make hydraulic oil flow in accumulator 3, and can when hydraulic fluid pressure is excessive, it be leaked in the fuel tank through relief valve 4; Thereby absorb and slow down hydraulic shock, have good impact resistance.
2) reliability is high
The utility model not only can be avoided causing because of being hit hydraulic element are damaged, and can also guarantee rate of tension necessary in tensioning hydro-cylinder 1 working procedure, has advantages such as pipe-line layout is reliable, reasonable in design.
Therefore, the beneficial effect of the utility model is conspicuous.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (9)

1. a protecting against shock tensioning hydraulic system is characterized in that, comprising:
Tensioning hydro-cylinder (1), said tensioning hydro-cylinder (1) comprises first interface and second interface, keeps preset rate of tension during said tensioning hydro-cylinder (1) work;
Reversing arrangement, said reversing arrangement comprise filler opening, return opening, first actuator port and second actuator port;
Pressurizer (2), two filler openings of said pressurizer (2) connect first actuator port and first interface respectively, and two oil outlets of said pressurizer (2) connect second actuator port and second interface respectively;
Accumulator (3), said accumulator (3) connect the oil circuit between the pressurizer (2) and second interface, and when this oil circuit hydraulic fluid pressure during greater than the working pressure of accumulator (3), hydraulic oil flow is in accumulator (3).
2. protecting against shock tensioning hydraulic system according to claim 1 is characterized in that said pressurizer (2) is bidirectional balanced valve, and the hydraulic fluid pressure that gets into said first interface is during greater than the cracking pressure of bidirectional balanced valve, the said second interface oil return; The hydraulic fluid pressure that gets into said second interface is during greater than the cracking pressure of bidirectional balanced valve, the said first interface oil return.
3. protecting against shock tensioning hydraulic system according to claim 2 is characterized in that, said bidirectional balanced valve comprises:
First one-way valve (21) and first sequence valve (25) of parallel connection; And
Second one-way valve (22) and second sequence valve (26) of parallel connection; The hydraulic oil that gets into first one-way valve (21) feeds back to the feedback end of second sequence valve (26), and the hydraulic oil that gets into second one-way valve (22) feeds back to the feedback end of first sequence valve (25).
4. protecting against shock tensioning hydraulic system according to claim 3 is characterized in that, said bidirectional balanced valve also comprises:
The 3rd one-way valve (23) and the first throttle plug (27) of parallel connection, the hydraulic oil that gets into first one-way valve (21) feeds back to the feedback end of second sequence valve (26) through said the 3rd one-way valve (23);
The 4th one-way valve (24) and second orifice plug (28) of parallel connection, the hydraulic oil that gets into second one-way valve (22) feeds back to the feedback end of first sequence valve (25) through said the 4th one-way valve (24).
5. protecting against shock tensioning hydraulic system according to claim 2 is characterized in that the cracking pressure of said bidirectional balanced valve is 300~500 bar.
6. according to each described protecting against shock tensioning hydraulic system of claim 1-5, it is characterized in that said second interface is arranged at rod chamber one side of said tensioning hydro-cylinder (1).
7. according to each described protecting against shock tensioning hydraulic system of claim 1-5, it is characterized in that, also comprise:
Relief valve (4), said relief valve (4) connect to get into the oil circuit of accumulator (3), and during greater than the cracking pressure of relief valve (4), hydraulic oil flow is to fuel tank at the hydraulic fluid pressure of this oil circuit.
8. according to each described protecting against shock tensioning hydraulic system of claim 1-5, it is characterized in that, also comprise:
Pressure gauge (5), said pressure gauge (5) are connected in the oil circuit between accumulator (3) and the relief valve (4), are used to show the hydraulic fluid pressure of this oil circuit.
9. a rotary drilling rig is characterized in that, said rotary drilling rig comprises each described protecting against shock tensioning hydraulic system of claim 1-8.
CN 201120503155 2011-12-06 2011-12-06 Impact resistant tensioning hydraulic system and rotary drilling rig Expired - Fee Related CN202510434U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120503155 CN202510434U (en) 2011-12-06 2011-12-06 Impact resistant tensioning hydraulic system and rotary drilling rig

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120503155 CN202510434U (en) 2011-12-06 2011-12-06 Impact resistant tensioning hydraulic system and rotary drilling rig

Publications (1)

Publication Number Publication Date
CN202510434U true CN202510434U (en) 2012-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120503155 Expired - Fee Related CN202510434U (en) 2011-12-06 2011-12-06 Impact resistant tensioning hydraulic system and rotary drilling rig

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103264732A (en) * 2013-06-06 2013-08-28 上海中联重科桩工机械有限公司 Track takeup device and method
CN103727097A (en) * 2013-11-25 2014-04-16 无锡京华重工装备制造有限公司 Protecting device of energy accumulator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103264732A (en) * 2013-06-06 2013-08-28 上海中联重科桩工机械有限公司 Track takeup device and method
CN103264732B (en) * 2013-06-06 2016-01-13 上海中联重科桩工机械有限公司 Track takeup and tensioning method thereof
CN103727097A (en) * 2013-11-25 2014-04-16 无锡京华重工装备制造有限公司 Protecting device of energy accumulator

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121031

Termination date: 20151206