CN205638290U - Oil well pipe fitting dismouting device - Google Patents

Oil well pipe fitting dismouting device Download PDF

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Publication number
CN205638290U
CN205638290U CN201620188628.3U CN201620188628U CN205638290U CN 205638290 U CN205638290 U CN 205638290U CN 201620188628 U CN201620188628 U CN 201620188628U CN 205638290 U CN205638290 U CN 205638290U
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CN
China
Prior art keywords
pipe fitting
oil well
well pipe
detaching
assembling
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Active
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CN201620188628.3U
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Chinese (zh)
Inventor
李四中
邹玉亮
聂泳培
李仁玉
胡健锋
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Hunan Haige Lishi Intelligent Technology Co Ltd
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Hunan Haige Lishi Intelligent Technology Co Ltd
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Priority to CN201620188628.3U priority Critical patent/CN205638290U/en
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Abstract

The utility model relates to an oil well pipe fitting dismouting device, include: liquid accumulation box is including link and the relative open end that sets up with the link, the mechanism is held to the card, is located liquid accumulation box's open end for fixed first oil well pipe fitting, dismouting mechanism locates open end one side of liquid accumulation box, dismouting mechanism can lie in card hold the relative position of mechanism with connect or separate first oil well pipe fitting and second oil well pipe fitting, dismouting mechanism includes the clamping components who is used for centre gripping second oil well pipe fitting, it is rotatable that the mechanism is held to the relative card of clamping components. Above -mentioned oil well pipe fitting dismouting device, the card is held the mechanism and can be fixed first oil well pipe fitting, with the card hold complex dismouting mechanism of mechanism through clamping components centre gripping second oil well pipe fitting in order to be connected or separate first oil well pipe fitting and the 2nd oil pipe member, have higher installation or dismantle efficiency, liquid accumulation box can be to connect or the well liquid of dismantlement in -process outflow collected in order to prevent that well liquid from leaking outward to realize the green construction of well head.

Description

Oil well pipe fitting attaching/detaching apparatus
Technical field
This utility model relates to well mouth of oil well implement field, particularly relates to a kind of oil well pipe fitting dismounting dress Put.
Background technology
Oil serves indispensable impact and effect as a kind of important energy source, the development on society.? In oil well exploration, exploitation and production industry field, oil field shaft mouth operation is can not in oilfield process Or the work lacked, drilling well, well workover are the important links in oilfield process.In drilling and repairing well process In often some instruments to the tubing type of drilling and repairing well, carry out porter such as oil pipe, sucker rod, drilling rod etc. Make.
The carrying of the pipe fitting instrument of down-hole at present relies primarily on Special crane lifting, human assistance dislodging suspension hook Implement operation.Due to well head bad environments, operator's not only labor intensity is big, and working environment is very Arduous, but also often due at crane lower work, there is bigger danger.And, along with construction Carry out, flow out from well head or the well liquid taken out of with pipe fitting trickled down with well head periphery or workmen, Also environment is polluted while causing workmen's working environment severe further.
Utility model content
Based on this, it is necessary to big for oil well operation labor intensity, well liquid stream goes out to cause the problem of environmental pollution, One is provided to reduce workmen's labor intensity, the oil well pipe fitting attaching/detaching apparatus of recovering well liquid.
A kind of oil well pipe fitting attaching/detaching apparatus, for dismounting the first oil well pipe fitting and the second oil well pipe fitting, including:
Hydrops case, including connecting end and being connected, with described, the opening that end is oppositely arranged;
Catch mechanism, is positioned at the opening of described hydrops case, is used for fixing described first oil well pipe fitting;And
Mechanism for assembling-disassembling, is located at the described opening side of described hydrops case, and described mechanism for assembling-disassembling can be located at described The relative position of catch mechanism is to connect or to separate described first oil well pipe fitting and described second oil well pipe fitting, institute Stating mechanism for assembling-disassembling and include the clamp assembly for clamping described second oil well pipe fitting, described clamp assembly is relative to institute State catch mechanism rotatable.
Above-mentioned oil well pipe fitting attaching/detaching apparatus, catch mechanism can be fixed the first oil well pipe fitting, be coordinated with catch mechanism Mechanism for assembling-disassembling clamp the second oil well pipe fitting with to the first oil well pipe fitting and the second oil pipe rod member by clamp assembly It is attached or separates, there is higher installation or removal efficiency, and reduce the labor intensity of workman.Long-pending The well liquid connected or flow out in unloading process can be collected preventing well liquid from leaking outside by liquid case, thus realizes well The green construction of mouth.
Wherein in an embodiment, described oil well pipe fitting attaching/detaching apparatus also includes controlling organization, described control Mechanism is connected with described catch mechanism and described mechanism for assembling-disassembling respectively, be used for controlling the clamping of described catch mechanism or Loosen, and control the described clamp assembly clamping of described mechanism for assembling-disassembling, loosen or rotate.
Wherein in an embodiment, described oil well pipe fitting attaching/detaching apparatus also includes well liquid pump, described well liquid pump It is connected with described hydrops case pipeline.
Wherein in an embodiment, described mechanism for assembling-disassembling includes guide rail and and described catch mechanism interval setting Assembling, described guide rail is located at the described opening of described hydrops case, and described assembling can be along described guide rail Length direction moves back and forth, and described clamp assembly is located at described assembling.
Wherein in an embodiment, described mechanism for assembling-disassembling also include can along the moving structure of described slide, Described assembling is installed on described moving structure, and described moving structure drives described assembling past along described guide rail Multiple mobile.
Wherein in an embodiment, described assembling also includes opening gear and the brake component being in transmission connection, Described clamp assembly is positioned at the inner hole wall of described opening gear, and described opening gear is used for driving described clamping group Part rotates, and described brake component is used for braking described clamp assembly and making described clamp assembly clamp described oil well pipe Part.
Wherein in an embodiment, described oil well pipe fitting attaching/detaching apparatus also includes oil wiper and blowout preventer, institute Stating oil wiper and be installed on the described connection end of described hydrops case, described blowout preventer is connected to described oil wiper and does not connects Connecing one end of described hydrops case, described blowout preventer is turned on and off opening or closing oil well.
Wherein in an embodiment, described oil well pipe fitting attaching/detaching apparatus also includes multiple supporting leg, described Support leg is located at described hydrops case to support described hydrops case.
Wherein in an embodiment, described oil well pipe fitting attaching/detaching apparatus also includes base and is installed on described long-pending The jacking supporting leg of liquid case, described base is provided with base rail, and described jacking supporting leg can move along described base rail Dynamic, described jacking supporting leg is provided with jacking part to drive described jacking supporting leg to stretch on its length direction.
Wherein in an embodiment, described base is provided with oscillating support leg, and two described oscillating support legs are positioned at institute Stating the both sides on base width direction, described oscillating support leg is not connected with the Height Adjustable of one end of described base, To change the levelness of described guide rail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the oil well pipe fitting attaching/detaching apparatus of an embodiment;
Fig. 2 is the structural representation of the oil well pipe fitting processing system of an embodiment.
Detailed description of the invention
For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is carried out more comprehensively Description.Accompanying drawing gives preferred embodiment of the present utility model.But, this utility model can be with Many different forms realize, however it is not limited to embodiment described herein.On the contrary, provide these real The purpose executing example is to make the understanding to disclosure of the present utility model more thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, and it can be directly at another yuan On part or element placed in the middle can also be there is.When an element is considered as " connection " another element, and it can To be directly to another element or to may be simultaneously present centering elements.Term as used herein " is hung down Straight ", " level ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all of technology used herein and scientific terminology with belong to of the present utility model The implication that those skilled in the art are generally understood that is identical.Institute in description of the present utility model herein The term used is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting this utility model. Term as used herein " and/or " include the arbitrary and all of of one or more relevant Listed Items Combination.
As it is shown in figure 1, a kind of oil well pipe fitting attaching/detaching apparatus 100 of this preferred embodiment, it is used for connecting or separating The the first oil well pipe fitting being threaded connection and the second oil well pipe fitting, oil well pipe fitting include but not limited to oil pipe and Beam hanger.
Specifically, oil well pipe fitting attaching/detaching apparatus 100 includes hydrops case 110, catch mechanism 120 and mechanism for assembling-disassembling 130.Wherein, hydrops case 110 include connect end and be connected the opening that end is oppositely arranged;Catch mechanism 120 It is positioned at the opening of hydrops case 110, is used for fixing the first oil well pipe fitting;Mechanism for assembling-disassembling 130 is located at hydrops case The opening side of 110, and can be located at the relative position of catch mechanism 120 to connect or to separate the first oil well pipe Part and the second oil well pipe fitting.Mechanism for assembling-disassembling 130 includes the clamp assembly 1342 for clamping the second oil well pipe fitting, This relative catch mechanism 120 of clamp assembly 1342 is rotatable.
Above-mentioned oil well pipe fitting attaching/detaching apparatus 100, catch mechanism 120 can fix the first oil well pipe fitting, with clamping machine The mechanism for assembling-disassembling 130 that structure 120 coordinates clamps the second oil well pipe fitting with to the first oil well by clamp assembly 1342 Pipe fitting and the second oil pipe rod member are attached or separate, and have higher installation or removal efficiency, and reduce The labor intensity of workman.Hydrops case 110 can to connect or unloading process in flow out well liquid be collected in case Only well liquid leaks outside, thus realizes the green construction of well head.
Oil well pipe fitting attaching/detaching apparatus 100 also includes controlling organization, controlling organization and catch mechanism 120 and dismounting Mechanism 130 connects, to automatically control catch mechanism 120, mechanism for assembling-disassembling 130.Specifically, control Mechanism can be used for controlling catch mechanism 120 and clamps or loosen, and the clamp assembly 1342 of mechanism for assembling-disassembling 130 presss from both sides Tightly, loosen or rotate.It is therefore not necessary to workmen carries out hands to catch mechanism 120 and mechanism for assembling-disassembling 130 Dynamic operation, thus reduce the labor intensity of workmen, there is higher work efficiency.
Please continue to refer to Fig. 1, oil well pipe fitting attaching/detaching apparatus 100 also includes well liquid pump 140.This well liquid pump 140 Being located at hydrops case 110 lateral wall and be connected with hydrops case 110 pipeline, the port of export pipeline of well liquid pump 140 is even It is connected in main line or the hydrops tank of oil well.So, the well liquid collected in hydrops case 110 can pass through well liquid pump 140 Come back in oil well, or enter in hydrops tank and store, thus avoid in oil well pipe fitting disassembly process from The well liquid flowed out in well head or taken out of by oil well pipe fitting is emitted in external environment, causes environmental pollution, waste Resource also makes troubles to the operation of workmen.
In the present embodiment, catch mechanism 120 is automatic power slips, can be carried out by modes such as pneumatic, hydraulic pressure Transmission.Specifically, this automatic power slips includes the first oil well pipe that telescopic claw stretches out from well head with clamping Part, thus the first oil well pipe fitting is fixed.It is appreciated that the concrete structure of catch mechanism 120 does not limits, Can select according to actual needs.
Mechanism for assembling-disassembling 130 includes guide rail 132 and assembling spaced with catch mechanism 120 134.Guide rail 132 openings being located at hydrops case 110, assembling 134 can move back and forth along guide rail 132 length direction.? When first oil well pipe fitting and the second oil well pipe fitting are dismantled or installed, assembling 134 moves along guide rail 132 Moving to catch mechanism 120, it is also rotated by clamping the second oil well pipe fitting, thus connects or divide From two oil well pipe fittings.
Mechanism for assembling-disassembling 130 also includes the moving structure 136 that can slide along guide rail 132.Assembling 134 is installed on Moving structure 136, moving structure 136 drives assembling 134 to move back and forth along guide rail 132 length direction.Tear open Piece installing 134 one end is connected to moving structure 136, the other end be provided with can relative to catch mechanism 120 rotate above-mentioned Clamp assembly 1342, is used for clamping and rotate oil well pipe fitting.
In the present embodiment, assembling 134 is hydraulic power tongs.Specifically, assembling 134 includes main pincers, Main pincers include opening gear, brake component and are arranged on the above-mentioned clamp assembly 1342 of opening bore wall, its In, clamp assembly 1342 includes ramp, block teeth, jaw roller, jaw and jaw plate frame assembly, opening gear Jaw plate frame assembly in inner chamber is connected with brake component transmission.
When drive system drives opening gear to rotate, the effect of the brake force that jaw plate frame assembly provides at brake component Lower generation relative dislocation, i.e. the ramp with curved surface rotates with opening gear, and jaw roller is along ramp Curved surface climbing, make jaw plate frame and opening gear relative motion, until block teeth clamping oil well pipe fitting, thus real The now clamping to oil well pipe fitting.When the moment of torsion that opening gear applies exceedes the revolving force needed for jaw plate frame rotates, Opening gear driven jaw plate frame assembly, jaw, block teeth clamping tubing string rotates together, thus tightens or turn on oil The screw thread of well casing part.It is appreciated that assembling 134 is alternatively other structure, can be arranged as required to.
Guide rail 132 is two, and two guide rail 132 parallel, spaced-apart are arranged, and catch mechanism 120 is positioned at two Lower section between guide rail 132.Moving structure 136 includes actuator 1362 and for installing assembling 134 Mobile base 1364, Mobile base 1364 is arranged on two guide rails 132, interconnective by gripper shoe and many Support forms to support assembling 134.Actuator 1362 is fixed on guide rail 132, and drives Mobile base 1364 Move along guide rail 132, thus drive assembling 134 to move.In the present embodiment, actuator 1362 is oil Cylinder, the piston rod of oil cylinder moves back and forth to drive Mobile base 1364 to move along guide rail 132.
So, catch mechanism 120 can fix the first oil well pipe fitting, and the second oil well pipe fitting is fastened in mechanism for assembling-disassembling 130 and rotate under the drive of mechanism for assembling-disassembling 130, so that the connection of the first oil well pipe fitting and the second oil well pipe fitting Or separate.
Oil well pipe fitting attaching/detaching apparatus 100 also includes oil wiper 150.The company of hydrops case 110 is located at by oil wiper 150 Connect end.The various attachments on the first oil well pipe fitting that this oil wiper 150 can will trip out from oil well mouth scrape, The attachment scraped then flows in hydrops case 110, it is simple to recycle.
In the present embodiment, the center of oil wiper 150 be provided with connect with hydrops case 110 scrape oilhole, frizing The inwall in hole is provided with rubber ring, this rubber ring contact the first oil well pipe fitting and with the first oil well pipe fitting interference fit, The attachment on the first oil well pipe fitting outer wall is struck off during the first oil well pipe fitting moves relative to oil wiper 150 Thing.
Oil well pipe fitting attaching/detaching apparatus 100 also includes blowout preventer 160, and this blowout preventer 160 is located at hydrops case 110 Connect end and be not connected with the side of opening.Specifically, one end of blowout preventer 160 is directly connected to oil well outlet, The other end is directly connected to oil wiper 150, and the well liquid that oil well flows out is by blowout preventer 160 and oil wiper 150 Enter in hydrops case 110.
In the present embodiment, blowout preventer 160 is ram preventer, including housing, moveable flashboard and anti- Spray apparatus actuator.Preventer actuator promotes flashboard to move back and forth, to open or close this ram preventer. When carrying out the dismounting of oil well pipe fitting, preventer actuator promotes flashboard to prevent to open this flashboard to a lateral movement Spray apparatus, makes oil well pipe fitting can pass from this ram preventer.When not carrying out the dismounting of oil well pipe fitting, anti- Spray apparatus actuator promotes flashboard to central motion to close this ram preventer, thus avoids well liquid from oil well Flow out.It is appreciated that the structure of blowout preventer 160 is not limited to this, can arrange according to actual needs.
Oil well pipe fitting attaching/detaching apparatus 100 also includes multiple supporting leg 170, and supporting leg 170 is connected to hydrops case 110 to support hydrops case 110.Further, supporting leg 170 includes first paragraph and is sheathed in first paragraph Second segment, first paragraph is scalable with second segment to be connected, and to adjust the height of supporting leg 170, thus adapts to not Same construction environment.In the present embodiment, supporting leg 170 is four, and the cross section of hydrops case 110 is square Shape structure, four supporting legs 170 are respectively arranged at four drift angles of hydrops case 110.
In the present embodiment, the edge of hydrops case 110 is additionally provided with fence 190, plays protection and buffer action.
As shown in Figures 1 and 2, this oil well pipe fitting attaching/detaching apparatus 100 also includes base 300 and is installed on long-pending The jacking supporting leg 180 of liquid case 110, base 300 is provided with base rail 320, and jacking supporting leg 180 can be along guide rail 132 move, with oil well centering.
Specifically, base rail 320 is rotatably connected with base 300.In the present embodiment, base rail 320 are located at base 300 one end and are connected with base 300 bearing pin.When carrying this base 300, turnable base Guide rail 320 is to reclaim base rail 320, thus reduces overall carrying size, convenient carrying.
Further, base 300 is provided with driving oil cylinder 340, and this driving oil cylinder 340 one end is installed on base On 300, the piston rod of oil cylinder 340 is driven to extend along base rail 320 direction, and with jacking supporting leg 180 even Connect, with drive hydrops case 110, catch mechanism 120 and mechanism for assembling-disassembling 130 along base rail 320 move to The position that oil well is corresponding.
Jacking part it is provided with in jacking supporting leg 180, to drive jacking supporting leg 180 to stretch on its length direction, So that the height of oil well pipe fitting attaching/detaching apparatus 100 coordinates with the height of oil well.Specifically, jacking supporting leg 180 Including can under the driving of jacking part the first paragraph of relative motion and second segment, jacking part drives first paragraph and the Two-stage nitration relative motion, thus adjust the length of jacking supporting leg 180.
Jacking supporting leg 180 is not connected with one end of hydrops case 110 and is provided with roller 182, and roller 182 is along base rail 320 roll so that oil well pipe fitting attaching/detaching apparatus 100 entirety moves along base rail 320, enter operating position. In the present embodiment, the piston rod of oil cylinder 340 is driven to be rotatably connected with roller 182, to drive roller 182 Roll along base rail 320.In work process, controlling organization can control roller 182 can be according to actual needs Roll along base rail 320, to adjust oil well pipe fitting attaching/detaching apparatus 100 in the length side of base rail 320 Position upwards.
Further, base 300 is provided with oscillating support leg 360.Specifically, two oscillating support legs 360 are positioned at the end Both sides on seat 300 widths, oscillating support leg 360 is not connected with the Height Adjustable of one end of base 300, To change the guide rail 132 levelness at width.
Specifically, oscillating support leg 360 wherein one end be rotationally connected with on base 300 with base 300 it Between in different angles, oscillating support leg 360 other end is provided with support oil cylinder 362.Oil well pipe fitting attaching/detaching apparatus During 100 work, oscillating support leg 360 is rocked to the position vertical with base rail 320, and support oil cylinder 362 supports It is held in ground.When construction site bad environments causes surface subsidence to cause oil well pipe fitting attaching/detaching apparatus 100 and well When the centering of mouth deviates, two support oil cylinders 362 adjust the height of two oscillating support legs 360 respectively, thus Adjust the base 300 levelness (i.e. the height on the relative ground of base 300) at width, it is achieved operation process In well head centering.
Above-mentioned oil well pipe fitting attaching/detaching apparatus 100, can be under the control of controlling organization, catch mechanism 120 clamping One oil well pipe fitting, mechanism for assembling-disassembling 130 clamping also rotates the second oil well pipe fitting, thus enters two oil well pipe fittings Row connects or separates.Further, by blowout preventer 160, oil well is closed, struck off by oil wiper 150 Attachment when oil well pipe fitting trips out, the attachment scraped is collected by hydrops case 110 with well liquid, is finally led to Cross liquid pump and discharge hydrops case 110.Additionally, this oil well pipe fitting attaching/detaching apparatus 100 is owing to being provided with the collapsible end Seat, and hydrops case 110, catch mechanism 120, mechanism for assembling-disassembling 130 etc. can move along base rail 320, and Can position adjustments in different directions to be directed at well head.So, there is higher work efficiency, reduce The labor intensity of workman, and while achieving environmental protection construction, convenient carrying and the well in work progress Mouth centering.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, its describe more concrete and In detail, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, it is right For those of ordinary skill in the art, without departing from the concept of the premise utility, it is also possible to do Going out some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, this utility model is special The protection domain of profit should be as the criterion with claims.

Claims (10)

1. an oil well pipe fitting attaching/detaching apparatus, for dismounting the first oil well pipe fitting and the second oil well pipe fitting, it is characterised in that including:
Hydrops case, including connecting end and being connected, with described, the opening that end is oppositely arranged;
Catch mechanism, is positioned at the opening of described hydrops case, is used for fixing described first oil well pipe fitting;And
Mechanism for assembling-disassembling, it is located at the described opening side of described hydrops case, described mechanism for assembling-disassembling can be located at the relative position of described catch mechanism to connect or to separate described first oil well pipe fitting and described second oil well pipe fitting, described mechanism for assembling-disassembling includes the clamp assembly for clamping described second oil well pipe fitting, and the most described catch mechanism of described clamp assembly is rotatable.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 1, it is characterized in that, described oil well pipe fitting attaching/detaching apparatus also includes controlling organization, described controlling organization is connected with described catch mechanism and described mechanism for assembling-disassembling respectively, for controlling the clamping of described catch mechanism or loosening, and control the described clamp assembly clamping of described mechanism for assembling-disassembling, loosen or rotate.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 1, it is characterised in that described oil well pipe fitting attaching/detaching apparatus also includes that well liquid pump, described well liquid pump are connected with described hydrops case pipeline.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 1, it is characterized in that, described mechanism for assembling-disassembling includes guide rail and assembling spaced with described catch mechanism, the described opening of described hydrops case is located at by described guide rail, described assembling can move back and forth along described rail length direction, and described clamp assembly is located at described assembling.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 4, it is characterized in that, described mechanism for assembling-disassembling also includes can be along the moving structure of described slide, and described assembling is installed on described moving structure, and described moving structure drives described assembling to move back and forth along described guide rail.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 4, it is characterized in that, described assembling also includes opening gear and the brake component being in transmission connection, described clamp assembly is positioned at the inner hole wall of described opening gear, described opening gear is used for driving described clamp assembly to rotate, and described brake component is used for braking described clamp assembly and making described clamp assembly clamp described oil well pipe fitting.
7. according to the oil well pipe fitting attaching/detaching apparatus described in claim 1~6 any one, it is characterized in that, described oil well pipe fitting attaching/detaching apparatus also includes oil wiper and blowout preventer, described oil wiper is installed on the described connection end of described hydrops case, described blowout preventer is connected to described oil wiper and is not connected with one end of described hydrops case, and described blowout preventer is turned on and off opening or closing oil well.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 1, it is characterised in that described oil well pipe fitting attaching/detaching apparatus also includes that multiple supporting leg, described supporting leg are located at described hydrops case to support described hydrops case.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 1, it is characterized in that, described oil well pipe fitting attaching/detaching apparatus also includes base and is installed on the jacking supporting leg of described hydrops case, described base is provided with base rail, described jacking supporting leg can move along described base rail, and described jacking supporting leg is provided with jacking part to drive described jacking supporting leg to stretch on its length direction.
Oil well pipe fitting attaching/detaching apparatus the most according to claim 9, it is characterized in that, described base is provided with oscillating support leg, two described oscillating support legs are positioned at the both sides on described base width direction, described oscillating support leg is not connected with the Height Adjustable of one end of described base, to change the levelness of described guide rail.
CN201620188628.3U 2016-03-11 2016-03-11 Oil well pipe fitting dismouting device Active CN205638290U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625964A (en) * 2016-03-11 2016-06-01 湖南海格力士智能科技有限公司 Oil well pipe fitting assembling and disassembling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625964A (en) * 2016-03-11 2016-06-01 湖南海格力士智能科技有限公司 Oil well pipe fitting assembling and disassembling device

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