CN114016940B

CN114016940B - Lifting mechanism and coiled tubing operation device

Info

Publication number: CN114016940B
Application number: CN202111176783.5A
Authority: CN
Inventors: 杨永磊; 侯英林; 白树瑞; 孙龙迪; 于保安; 段连攀; 李富红; 黄振
Original assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Current assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-10-18
Anticipated expiration: 2041-10-09
Also published as: CN114016940A; WO2023056689A1

Abstract

The invention discloses a lifting mechanism and a coiled tubing operation device, and relates to the technical field of petroleum equipment. The lifting mechanism comprises a base, a suspension arm, a support, a first telescopic driving part and a second telescopic driving part, wherein the suspension arm and the support are in rotating fit with the base, and the suspension arm and the support rotate around the same axis relative to the base; the support is provided with a first supporting part and a second supporting part, the first supporting part is connected with the suspension arm through a first telescopic driving part, and the first telescopic driving part is used for driving the suspension arm to rotate relative to the base; the second supporting part is connected with the base through a second telescopic driving part, and the second telescopic driving part is used for driving the suspension arm to rotate relative to the base. The scheme can solve the problem that the rotation angle of the suspension arm of the lifting device is small in the related technology.

Description

Lifting mechanism and coiled tubing operation device

Technical Field

The invention relates to the technical field of petroleum equipment, in particular to a lifting mechanism and a coiled tubing operation device.

Background

Coiled tubing is also known as coiled tubing, coiled tubing or coiled tubing. Coiled tubing is a long length of tubing coiled on tubing drums and pulled straight and then run into the well, as opposed to conventional tubing that is threaded. Coiled tubing operations were originally used to run into production tubing to complete specific workover operations, such as well cleaning, salvage, etc., and up to the last 90 th century, coiled tubing operation devices have been known as "universal operation equipment" and have been widely used in oil and gas field workover, drilling, well completion, well logging, etc., and have played an increasingly important role in oil and gas field exploration and development.

The coiled tubing operation device mainly comprises two mechanisms, namely an oil tube roller and an oil tube injection device, namely an injection head. In order to avoid the limitation of the transportation of the coiled tubing operation device, the coiled tubing operation device comprises a vehicle-mounted coiled tubing operation device and a skid-mounted coiled tubing operation device, and in the process of installing or disassembling the injection head, the vehicle-mounted coiled tubing operation device or the skid-mounted coiled tubing operation device is required to be installed or disassembled by a crane, the operation of assembling the injection head and the hoisting device is increased, and the working efficiency is reduced.

In the related art, a hoisting device is provided in the coiled tubing unit for mounting or dismounting the injector head. However, in order to avoid the transportation limitation of the coiled tubing operation device, the related art is at the cost of reducing the swing angle of the suspension arm and reducing the hoisting operation range of the hoisting device.

Disclosure of Invention

The invention discloses a lifting mechanism and a coiled tubing operation device, and aims to solve the problem that in the related art, the rotation angle of a suspension arm of a lifting device is small.

In order to solve the problems, the invention adopts the following technical scheme:

the lifting mechanism comprises a base, a suspension arm, a support, a first telescopic driving part and a second telescopic driving part, wherein the suspension arm and the support are in rotating fit with the base, and rotate around the same axis relative to the base;

the support is provided with a first supporting part and a second supporting part, the first supporting part is connected with the suspension arm through a first telescopic driving part, and the first telescopic driving part is used for driving the suspension arm to rotate relative to the base; the second supporting part is connected with the base through a second telescopic driving part, and the second telescopic driving part is used for driving the suspension arm to rotate relative to the base.

Based on the lifting mechanism disclosed by the embodiment of the invention, the invention further provides a coiled tubing operation device. The coiled tubing work apparatus comprises the lifting mechanism described above. The coiled tubing operation device also comprises an injection head, a vehicle-mounted platform, a coiled tubing and a tubing roller,

the oil pipe roller and the lifting mechanism are arranged on the vehicle-mounted platform, the first end of the continuous oil pipe is wound on the oil pipe roller, the second end of the continuous oil pipe is connected with the injection head, the injection head is connected with one end, far away from the base, of the suspension arm, and the lifting mechanism is used for lifting the injection head.

The technical scheme adopted by the invention can achieve the following beneficial effects:

in the lifting mechanism disclosed by the embodiment of the invention, the second telescopic driving part is used for driving the support to rotate relative to the base, and the support is connected with the suspension arm through the first telescopic driving part, so that the support can drive the suspension arm to rotate relative to the base through the first telescopic driving part in the process of driving the support to rotate relative to the base by the second telescopic driving part. Furthermore, under the condition that the second telescopic driving part does not work, the first telescopic driving part can drive the suspension arm to rotate relative to the support and the base, so that the motion superposition of the first telescopic driving part and the second driving part can be realized through the support, and the aim of increasing the swing angle of the suspension arm is fulfilled. Under the condition that the length of the suspension arm is constant, the included angle between the suspension arm and the horizontal plane can be reduced by rotating the suspension arm, and the increase of the lifting range of the suspension arm on the horizontal plane is further achieved. The lifting mechanism in the embodiment of the invention can increase the operation range of the lifting mechanism by increasing the range of the rotation angle of the suspension arm relative to the base under the condition that the size of the driving mechanism is limited. Therefore, the technical scheme can increase the working range of the lifting mechanism under the condition that the size of the lifting mechanism is limited.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic illustration of a coiled tubing assembly as disclosed in an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

FIG. 3 is a schematic view of the lifting mechanism according to the embodiment of the present invention after being folded;

FIG. 4 is a schematic view of the hoisting mechanism according to the embodiment of the present invention after being extended;

FIG. 5 is an enlarged view of a portion of the first position of FIG. 4;

FIG. 6 is an enlarged view of a second portion of FIG. 4;

fig. 7 is a schematic structural diagram of driving the boom to rotate according to the embodiment of the present invention.

In the figure: 100-a base; 110-a first seat; 120-a second seat; 130-a third driver; 200-a boom; 300-a scaffold; 310-a second support; 320-a first support; 330-a connecting part; 340-a second connecting arm; 350-a first connecting arm; 360-a third link arm; 500-a first telescopic drive member; 400-a second telescopic drive member; 600-an injection head; 700-vehicle platform; 800-coiled tubing; 900-oil tube roller; 1000-injector head connection; 1010-cantilever; 1020-an injector head connection; 1030-fourth drive.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to be exhaustive or exhaustive. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to fig. 1 to 7.

Referring to fig. 3 to 5, the lifting mechanism disclosed in the embodiment of the present invention includes a base 100, a boom 200, a bracket 300, a first telescopic driving member 500, and a second telescopic driving member 400, wherein the base 100 is a basic structure and can provide a mounting base for the boom 200, the bracket 300, the first telescopic driving member 500, and the second telescopic driving member 400.

Referring to FIG. 5, the boom 200 and the stand 300 are both rotationally engaged with the base 100, and the boom 200 and the stand 300 rotate about the same axis relative to the base 100. Illustratively, the boom 200 and the stand 300 are each rotationally coupled to the base 100 by a pivot. Specifically, the boom 200 and the stand 300 may be respectively rotated about the rotation axis with respect to the base 100. Illustratively, the boom 200 and the stand 300 rotate relative to the base 100 in a vertical plane.

It should be noted that the vertical plane in the present application refers to the situation where the base 100 is installed on a horizontal plane as shown in fig. 3 or fig. 4, and the boom 200 and the support 300 rotate in the vertical plane. For this reason, in case that the base 100 installation plane is not a horizontal plane, the plane in which the boom 200 rotates with respect to the base 100 may not be a vertical plane.

Referring to fig. 5, the stand 300 has a first support part 320 and a second support part 310, the first support part 320 is connected to the boom 200 by a first telescopic driving unit 500, and the first telescopic driving unit 500 is used to drive the boom 200 to rotate with respect to the base 100. The second supporting portion 310 is connected to the base 100 through a second telescopic driving member 400, and the second telescopic driving member 400 is used for driving the boom 200 to rotate relative to the base 100.

Referring to fig. 3, 4 and 7, a first end of the second telescopic driving member 400 is rotatably coupled to the bracket 300, and a second end of the second telescopic driving member 400 is rotatably coupled to the base 100. For example, in the state of the lifting mechanism shown in fig. 3, the second telescopic driving member 400 may be extended such that the second telescopic driving member 400 can rotate the supporting frame 300 relative to the base 100. Since the support 300 is connected to the suspension arm 200 via the first telescopic driving member 500, for this reason, during the rotation of the support 300 relative to the base 100, the support 300 drives the suspension arm 200 to rotate relative to the base 100 via the first telescopic driving member 500.

Illustratively, a first end of the first telescopic driver 500 is rotatably coupled to the bracket 300 and a second end of the first telescopic driver 500 is rotatably coupled to the boom 200 to drive the boom 200 to rotate relative to the base 100 by extending or retracting the first telescopic driver 500. Under the condition that the lifting mechanism is in the state shown in fig. 3, the first telescopic driving member 500 can be shortened to drive the boom 200 to rotate relative to the base 100, so as to adjust the inclination angle of the boom 200 relative to the horizontal plane.

Illustratively, the range of rotation of the boom 200 relative to the base 100 is a first range with the first telescopic drive 500 in the inoperative state, i.e., with only the second telescopic drive 400 driving the boom 200. In the case where the second telescopic driver 400 is in the non-operating state, that is, only the second telescopic driver 400 drives the boom 200, the range in which the boom 200 is rotated with respect to the base 100 is the second range. Thus, the range of rotation of the boom 200 relative to the base 100 in the lifting mechanism in the above embodiment is the sum of the first range and the second range. That is, the lifting mechanism according to the above embodiment can overlap the action ranges of the second telescopic driving element 400 and the first telescopic driving element 500 through the bracket 300, so as to increase the rotation range of the boom 200 relative to the base 100. In addition, in the above embodiment, the direction of the force for driving the boom 200 to rotate can be changed by arranging the bracket 300, and the distance between one end of the first telescopic driving member 500 or the second telescopic driving member 400 far away from the boom 200 and the boom 200 can be effectively reduced, so that the structures between the second telescopic driving member 400 and the first telescopic driving member 500 and the boom 200 and the base 100 are more compact, the length of the telescopic driving members can be reduced, and the occupied space of the hoisting mechanism can be reduced.

It should be noted that there are many types of telescopic drives, for example: a hydraulic cylinder, an air cylinder, a rack and pinion mechanism, a cam slider mechanism, etc., and for this reason, the present embodiment is not limited to the specific kinds of the first and second

telescopic drivers

500 and 400.

Referring to fig. 2 to 5, the bracket 300 has a connection portion 330, the connection portion 330 is located between the first support portion 320 and the second support portion 310, and the bracket 300 is rotatably fitted to the base 100 through the connection portion 330. In this embodiment, the supporting frames 300 can be distributed on two sides of the joint of the boom 200 and the base 100, so as to further improve the compactness of assembling the supporting frames 300 and the boom 200 and further reduce the space occupied by the lifting mechanism. In addition, the connecting portion 330 is located between the first supporting portion 320 and the second supporting portion 310, and the first telescopic driving member 500 and the second telescopic driving member 400 can be prevented from interfering with each other in the process of driving the boom 200 to rotate, so that the first telescopic driving member 500 and the second telescopic driving member 400 can be prevented from interfering with each other to reduce the rotation angle of the boom 200. Illustratively, the first support 320 is a third distance from the connection of the boom 200 and the base 100, and the second support 310 is a fourth distance from the connection of the boom 200 and the base 100. The third distance is less than the fourth distance to reduce the driving force output by the second telescopic driver 400.

Referring to fig. 3 to 5, a line connecting the first supporting part 320 and the connecting part 330 and a line connecting the second supporting part 310 and the connecting part 330 intersect at the connecting part 330. Illustratively, a line connecting the first supporting portion 320 and the connecting portion 330 is a first line, and a line connecting the second supporting portion 310 and the connecting portion 330 is a second line. And then can adjust the direction of the first flexible driving piece 500 and the second flexible driving piece 400 through setting up the contained angle between first line and the second line to reduce the pivoted drive power of drive davit 200, and then can effectively reduce the power of first flexible driving piece 500 and second flexible driving piece 400. In addition, the included angle between the first connecting line and the second connecting line can be adjusted according to actual needs so as to improve the compactness of the structure of the hoisting mechanism. In an alternative embodiment, the bracket 300 may be a triangular support plate, and the first support part 320, the second support part 310 and the connecting part 330 are three vertexes of the triangular support plate. Illustratively, the boom 200 may be located between the first wire and the second wire.

Referring to fig. 2 to 5, the stand 300 has a first connecting arm 350 and a second connecting arm 340, the first connecting arm 350 is used for connecting the first supporting portion 320 and the connecting portion 330, the second connecting arm 340 is used for connecting the second supporting portion 310 and the connecting portion 330, an included angle between the first connecting arm 350 and the second connecting arm 340 is an obtuse angle, and the boom 200 rotates between the first connecting arm 350 and the second connecting arm 340 relative to the stand 300. Illustratively, the first connecting arm 350 and the second connecting arm 340 are fixedly connected. The fastening means can be various, such as integral structure, welding, bolting, clamping, etc. For this reason, the embodiments of the present application do not limit the specific connection manner of the first connection arm 350 and the second connection arm 340.

Illustratively, the length of the first connecting arm 350 is smaller than that of the second connecting arm 340, which not only reduces the driving force of the second telescopic driving element 400, but also increases the range of rotation of the bracket 300 relative to the base 100 and thus the range of rotation of the suspension arm 200 relative to the base 100 under the condition that the size of the bracket 300 is fixed.

It should be noted that the rotation of the boom arm 200 between the first connecting arm 350 and the second connecting arm 340 relative to the bracket 300 in the embodiment of the present application means that the boom arm 200 is located between the first connecting arm 350 and the second connecting arm 340, i.e. the sum of the included angle between the boom arm 200 and the first connecting arm 350 and the included angle between the boom arm 200 and the second connecting arm 340 is equal to the included angle between the first connecting arm 350 and the second connecting arm 340. In the above embodiment, the boom 200 is located between the first connecting arm 350 and the second connecting arm 340, so that the bracket 300 not only can provide a larger avoidance space for the first telescopic driving element 500 and the second telescopic driving element 400, but also can avoid the base 100 from interfering with the rotation of the bracket 300, so that the rotation angle of the bracket 300 relative to the base 100 is larger, and further, the range in which the first telescopic driving element 500 and the second telescopic driving element 400 can drive the boom 200 to rotate is increased.

In an alternative embodiment, the supporting frame 300 further includes a third connecting arm 360, and the third connecting arm 360 is used to connect the first supporting portion 320 and the second supporting portion 310, so as to improve the bearing capacity of the supporting frame 300 and improve the stability of the supporting frame 300.

Referring to fig. 2, in an alternative embodiment, the number of the brackets 300 may be two, and two brackets 300 are symmetrically disposed at both sides of the base 100 and/or the boom 200 to improve the stability of the whole structure of the lifting mechanism.

In an alternative embodiment, the base 100 comprises a first base 110 and a second base 120, wherein the first base 110 is connected to the support 300, the suspension arm 200, the first telescopic driving member 500 and the second telescopic driving member 400 respectively. The first seat 110 is rotatably engaged with the second seat 120, and the first seat 110 rotates in a horizontal plane relative to the second seat 120. It should be noted that, in the present application, the first fastening structure 110 is rotatable in a horizontal plane relative to the second fastening structure 120, which means that when the mounting plane of the base 100 is horizontally mounted as shown in fig. 3 or fig. 4, the first fastening structure 110 is rotatable in a horizontal plane relative to the second fastening structure 120. In this embodiment, the first seat 110 and the second seat 120 are rotatably engaged, so as to increase the operation range of the hoisting mechanism.

In an alternative embodiment, the base 100 further includes a third driving element 130, the third driving element 130 is respectively connected to the first seat 110 and the second seat 120, and the third driving element 130 is used for driving the first seat 110 to rotate relative to the second seat 120. Illustratively, the third driver 130 may be a motor. Specifically, the third driving element 130 can be disposed on the first seat 110, and the third driving element 130 can be in gear engagement transmission with the second seat 120, so that the first seat 110 can rotate relative to the second seat 120, and further the bracket 300, the suspension arm 200, the first telescopic driving element 500, and the second telescopic driving element 400 disposed on the first seat 110 are driven to rotate relative to the second seat 120.

Referring to fig. 3 and 4, the boom 200 is a telescopic boom 200 to reduce the length of the boom 200 by contraction of the boom 200. Illustratively, the suspension arm 200 includes at least two sub-arms, and the corresponding diameters of the sub-arms are different, so that the sub-arms can be sleeved step by step. The length of the boom arm 200 can then be reduced by retracting the sub-arm with the smaller diameter into the sub-arm with the larger diameter.

It should be noted that there are many kinds of telescopic booms, and for this reason, the embodiment of the present application does not limit the specific structure of the boom 200.

Based on the hoisting mechanism disclosed by the embodiment of the invention, the embodiment of the invention also discloses a coiled tubing operation device. The coiled tubing work apparatus comprises the hoisting mechanism according to any of the above embodiments to increase the working range of the hoisting work of the coiled tubing work apparatus by the hoisting mechanism. Illustratively, the coiled tubing work apparatus further comprises an injector head 600, a vehicle platform 700, coiled tubing 800 and tubing drum 900,

referring to fig. 1, a tubing drum 900 and a lifting mechanism are disposed on a vehicle-mounted platform 700, a first end of a coiled tubing 800 is wound around the tubing drum 900, a second end of the coiled tubing 800 is connected to an injection head 600, the injection head 600 is connected to an end of a boom 200 away from a base 100, and the lifting mechanism is used for lifting the injection head 600.

The coiled tubing operation device in the above embodiment can meet transportation requirements by configuring the hoisting mechanism, and can be connected with the coiled tubing 800 in the installation, disassembly and transportation processes of the injection head 600, so that the injection head 600 and the coiled tubing 800 can be prevented from being repeatedly disassembled and assembled, the work efficiency can be improved, and the service life of equipment can be prolonged.

It should be noted that, in the related art, the injection head 600 and the tubing drum 900 are not on the same vehicle or in a skid, and the coiled tubing 800 cannot be held in the injection head 600 during the transportation of the equipment. Further, in the installation process, the steps of assembling the injector head 600 with a gooseneck and a well control device (blowout preventer and blowout preventer), penetrating the coiled tubing 800 into the injector head 600, and the like are also required, so that the installation difficulty of the coiled tubing operation device is increased. And in the process of disassembly, the steps of disassembling the injector head 600 from the gooseneck, well control devices (blowout preventer ), and disassembling the coiled tubing 800 and the injector head 600 are also required.

The coiled tubing 800 and the injection head 600 of the coiled tubing operation device, and the injection head 600 and gooseneck, well control device (blowout prevention box, blowout preventer) and other structures in the above embodiments are all in an assembled state, and then in the installation process, the injection head 600 is lifted to the wellhead for centering by the lifting mechanism, so that the installation of the coiled tubing operation device can be completed. Therefore, the coiled tubing operation device of the embodiment is simpler and more convenient to operate. Further, the range of the rotation angle of the boom 200 in the lifting mechanism is larger, so that the continuous operation device has a larger installation range of the injection head 600 during the installation process of the injection head 600.

Illustratively, a user can rotate or extend through the boom 200 such that the lifting height of the boom 200 is increased. Because the rotation angle of the boom 200 relative to the base 100 is larger, in the process of folding the boom 200, the boom 200 can be folded to the vehicle-mounted platform 700, and the inclination angle of the boom 200 relative to the vehicle-mounted platform 700 to the side far away from the tubing roller 900 can be larger through the first telescopic driving member 500 and the second telescopic driving member 400, so that the range that the injection head 600 can reach is larger under the condition that the length of the boom 200 is constant, so that the injection head 600 can be centered with the wellhead. In an alternative embodiment, the base 100 may drive the boom 200 to rotate relative to the vehicle platform 700, thereby further increasing the flexibility of installing the injector 600 at the wellhead and improving the convenience of the coiled tubing assembly.

In an alternative embodiment, the oil pipe roller 900 may be disposed on a side of the vehicle-mounted platform 700 close to the vehicle head, and the lifting mechanism is disposed on a side of the vehicle-mounted platform 700 far from the vehicle head. Further, an escape space is provided between the tube roller 900 and the base 100, so that the boom 200 and the injector head 600 can be folded between the tube roller 900 and the base 100. Illustratively, with the boom 200 in the stowed position, the boom 200 may be parallel to the truck deck 700 to reduce the height of the coiled tubing work apparatus during transport.

In an alternative embodiment, the coiled tubing unit further comprises an injector head attachment 1000, and the injector head attachment 1000 is disposed at an end of the boom 200 remote from the base 100. And the injection head 600 is rotatably connected with the boom 200 through the injection head connection mechanism 1000 so that the injection head 600 arranged on the injection head connection mechanism 1000 is aligned with the wellhead. Specifically, the injector head 600 may be centered with respect to the wellhead by rotating the injector head attachment mechanism 1000 with respect to the boom arm 200.

It should be noted that the orientation of the wellhead may be vertically upward, or may be inclined upward. Therefore, the injection head 600 is rotatably connected to the boom 200 through the injection head connection mechanism 1000, which can reduce the difficulty of aligning the injection head 600 with the wellhead.

Referring to fig. 1, 3 and 4, the injection head connection mechanism 1000 includes a cantilever 1010 and an injection head connector 1020, the injection head connector 1020 for mounting the injection head 600. The first end of the cantilever 1010 is connected to the end of the boom 200 far from the base 100, the second end of the cantilever 1010 is rotatably connected to the injector head connector 1020, the cantilever 1010 is intersected with the boom 200, the distance between the end of the cantilever 1010 far from the boom 200 and the boom 200 is a first distance, the distance between the end of the cantilever 1010 far from the boom 200 and the side of the injector head connector 1020 near the boom 200 is a second distance, and the first distance is not less than the second distance.

In the above embodiment, the first distance is not less than the second distance, so that the injector head connector 1020 or the injector head 600 and the boom 200 can be prevented from interfering with each other, and the injector head 600 and the boom 200 can be folded more compactly under the condition that the hoisting mechanism is in the folded state, thereby reducing the volume of the coiled tubing unit.

Referring to fig. 6, the injector head connection mechanism 1000 further includes a fourth driver 1030, a first end of the fourth driver 1030 is connected to the boom 200 and/or the arm 1010, a second end of the fourth driver 1030 is connected to the injector head connector 1020, and the fourth driver 1030 is used for driving the injector head connector 1020 to rotate relative to the arm 1010. For example, the fourth driving member 1030 may be a cylinder, a motor, or the like. The present embodiment does not limit the specific type of the fourth driver 1030 for this purpose.

In this embodiment, the orientation of the injector head 600 may be adjusted by the fourth drive 1030, thereby facilitating alignment of the injector head 600 with a wellhead that is not vertically upward facing. In addition, in the process of folding the coiled tubing operation device, the injection head 600 and the suspension arm 200 do not need to be folded manually, so that the labor intensity of operators in the process of operating the coiled tubing operation device can be reduced.

In an optional embodiment, the injection head connector 1020 further includes a fixing frame, and the fixing frame is used for installing and fixing the well control device, so that the well control device can be prevented from shaking, and the safety of the coiled tubing operation device can be improved.

In an alternative embodiment, the vehicle platform 700 includes hydraulically assisted legs. For example, the hydraulic auxiliary legs may extend along and be supported at a horizontal plane to increase the width of the vehicle platform 700 from the ground support point, thereby improving the stability of the vehicle platform 700.

In the above embodiments of the present invention, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A lifting mechanism is characterized by comprising a base (100), a suspension arm (200), a support (300), a first telescopic driving piece (500) and a second telescopic driving piece (400), wherein the suspension arm (200) and the support (300) are in swing fit with the base (100), and the suspension arm (200) and the support (300) swing around the same axis relative to the base (100);

the bracket (300) is provided with a first supporting part (320) and a second supporting part (310), the first supporting part (320) is connected with the suspension arm (200) through the first telescopic driving piece (500), and the first telescopic driving piece (500) is used for driving the suspension arm (200) to swing relative to the base (100); the second support portion (310) is connected to the base (100) through the second telescopic driving member (400), and the second telescopic driving member (400) is used for driving the suspension arm (200) to swing relative to the base (100).

2. The lifting mechanism as recited in claim 1, wherein the bracket (300) has a connecting portion (330), the connecting portion (330) is located between the first support portion (320) and the second support portion (310), and the bracket (300) is in swing engagement with the base (100) through the connecting portion (330).

3. The lifting mechanism according to claim 2, characterized in that the bracket (300) has a first connecting arm (350) and a second connecting arm (340), the first connecting arm (350) is used to connect the first support part (320) and the connecting part (330), the second connecting arm (340) is used to connect the second connecting arm (340) and the connecting part (330), the angle between the first connecting arm (350) and the second connecting arm (340) is an obtuse angle, and the boom arm (200) swings between the first connecting arm (350) and the second connecting arm (340) relative to the bracket (300).

4. A lifting mechanism according to claim 3, wherein the bracket (300) further comprises a third connecting arm (360), the third connecting arm (360) being adapted to connect the first support (320) and the second support (310).

5. A lifting mechanism according to any of claims 1-4, characterized in that a first end of the first telescopic driving member (500) is rotatably engaged with the bracket (300) and a second end of the first telescopic driving member (500) is rotatably engaged with the boom (200); and/or the presence of a gas in the gas,

the first end of the second telescopic driving piece (400) is in running fit with the support (300), and the second end of the second telescopic driving piece (400) is in running fit with the base (100).

6. The lifting mechanism according to any one of claims 1 to 4, wherein the base (100) comprises a first base body (110) and a second base body (120), the first base body (110) is connected to the support (300), the boom (200), the first telescopic driving member (500) and the second telescopic driving member (400), respectively;

the first fastening structure (110) is rotatably engaged with the second fastening structure (120), and the first fastening structure (110) rotates in a horizontal plane relative to the second fastening structure (120).

7. The lifting mechanism according to claim 6, wherein the base (100) further comprises a third driving member (130), the third driving member (130) is respectively connected to the first seat (110) and the second seat (120), and the third driving member (130) is configured to drive the first seat (110) to rotate relative to the second seat (120).

8. A lifting mechanism according to any one of claims 1-4, characterized in that the boom (200) is a telescopic boom.

9. A coiled tubing work apparatus comprising a lifting mechanism as claimed in any of claims 1 to 8; the coiled tubing operation device also comprises an injection head (600), a vehicle-mounted platform (700), a coiled tubing (800) and a tubing roller (900),

the oil pipe roller (900) and the lifting mechanism are arranged on the vehicle-mounted platform (700), the first end of the coiled oil pipe (800) is wound on the oil pipe roller (900), the second end of the coiled oil pipe (800) is connected with the injection head (600), the injection head (600) is far away from the suspension arm (200), one end of the base (100) is connected with the injection head, and the lifting mechanism is used for lifting the injection head (600).

10. Coiled tubing unit according to claim 9, further comprising an injector head connection (1000), wherein the injector head connection (1000) is arranged at an end of the boom (200) remote from the base (100), and wherein the injector head (600) is pivotally connected to the boom (200) via the injector head connection (1000).

11. Coiled tubing work apparatus according to claim 10, wherein the injector head connection mechanism (1000) comprises a cantilever (1010) and an injector head connection (1020), the injector head connection (1020) being for mounting the injector head (600);

a first end of the cantilever (1010) is connected to an end of the cantilever (200) remote from the base (100), a second end of the cantilever (1010) is rotatably connected to the injector head connector (1020),

the cantilever (1010) is intersected with the suspension arm (200), the distance between one end, far away from the suspension arm (200), of the cantilever (1010) and the suspension arm (200) is a first distance, the distance between one end, far away from the suspension arm (200), of the cantilever (1010 and one side, close to the suspension arm (200), of one end, far away from the suspension arm (200) of the injection head (600) or the injection head connector (1020) is a second distance, and the first distance is not smaller than the second distance.

12. Coiled tubing work apparatus according to claim 11, wherein the injector head connection mechanism (1000) further comprises a fourth driver (1030), a first end of the fourth driver (1030) being connected to the boom (200) and/or the boom (1010), a second end of the fourth driver (1030) being connected to the injector head connection (1020), and the fourth driver (1030) being adapted to drive the injector head connection (1020) in rotation relative to the boom (1010).