CN215046768U - Lifting device of intelligent well repairing vehicle - Google Patents

Abstract

The application discloses elevating gear of intelligence workover rig, including sideslip subassembly, lifting unit and bearing tube subassembly, the bearing tube subassembly includes bearing tube clamp, third guide rail and third drive arrangement, and each subassembly can form organic unified action wholly under each drive arrangement's control, carries out "feed" to the jack catch by the direct drive oil pipe of bearing tube clamp, accomplishes actions such as last unloading, the transportation of oil pipe fast. In the process of feeding and discharging, the oil pipe directly vertically moves along a straight line, the oil pipe can reach the grasping position without a plurality of transfer processes, the overall moving stroke is relatively small, the action process is simple and quick, and the well repairing efficiency is greatly improved.

Description

Lifting device of intelligent well repairing vehicle

Technical Field

The application relates to the technical field of oil field well servicing equipment, in particular to a lifting device of an intelligent well servicing truck.

Background

The oil field well repairing operation refers to an operation of oil drilling and subsequent oil well maintenance, is a maintenance and maintenance measure for ensuring smooth use of an oil well, has high engineering difficulty and technical requirement, and can be carried out only by special equipment tools such as large-scale well repairing equipment.

In the existing well repairing equipment, mechanical automation operation is basically realized for the disassembly and assembly of oil well oil pipes and the loading and unloading. However, in the transfer process of the oil pipe, certain manual assistance is still needed, so that the working efficiency is low, and safety accidents are easily caused by improper operation, so that casualties are caused.

In the prior art, intelligent well repairing equipment without manual assistance exists, but the overall structure is complex. When grabbing and transporting the oil pipe, not only the operation is slow and only can grab or place the oil pipe in the specific area, and the oil pipe is limited by various factors such as working environment and the like, so that the working efficiency is low. When the oil pipe is loaded and unloaded, the oil pipe can be moved to a specified position only through a plurality of transfer processes, the oil pipe is limited by more spaces and positions, the oil pipe is moved in a curve in the transfer process, the stroke is large, the lifting and moving are slow, the efficiency is low, and the field operation and the use are inconvenient.

Disclosure of Invention

The application provides a lifting device of intelligence workover rig to solve at least one among the above-mentioned technical problem.

The technical scheme adopted by the application is as follows:

a lifting device of an intelligent workover rig, the intelligent workover rig comprising a frame, the lifting device comprising:

the transverse moving assembly comprises a sliding seat, a first guide rail and a first driving device, the first guide rail is arranged on the side edge of the frame, the extending direction of the first guide rail is vertical to the advancing direction of the frame, and the first driving device drives the sliding seat to move left and right relative to the frame along the first guide rail;

the lifting assembly comprises a lifting frame, a second guide rail and a second driving device, the second guide rail is arranged on the lifting frame and extends along the height direction of the frame, and the second driving device drives the lifting frame to move up and down relative to the sliding seat;

the third guide rail is arranged on the lifting frame and extends along the height direction of the frame, and the third driving device drives the pipe clamp to move up and down along the third guide rail relative to the lifting frame.

Furthermore, the lifting device further comprises a length measuring assembly, the length measuring assembly comprises a telescopic rod and a fourth driving device, the telescopic rod is fixed to the lifting frame, the telescopic direction of the telescopic rod is perpendicular to the movement direction of the lifting frame, and the telescopic rod extends or shortens through the fourth driving device.

Furthermore, the telescopic link includes fixed pole and moves the pole, fixed pole is fixed in the upper portion of crane, move the pole slide set up in fixed pole and relative fixed pole orientation the rear of frame slides.

Further, the sliding seat comprises a bottom plate and a top plate, the bottom plate moves along the first guide rail, the top plate supports and fixes the lifting frame, and when the bottom plate moves to the outermost edge of the first guide rail, the projection of the lifting frame in the vertical direction is located on the outer side of the frame.

Further, the lifting device at least comprises two supporting pipe assemblies which are arranged at intervals.

Furthermore, the intelligent workover rig is provided with two sets of lifting devices, and the lifting devices are respectively located on the left side and the right side of the frame.

Further, the second drive arrangement includes hydraulic motor, spur rack and gear, hydraulic motor is fixed in the sliding seat, the spur rack is fixed in the crane and with second guide rail looks parallel arrangement, the gear set up in hydraulic motor's pivot and with the spur rack is engaged with mutually, hydraulic motor drive the gear is relative the spur rack rotates the drive the crane is followed the second guide rail reciprocates.

Further, the third driving device comprises a lifting chain, a chain wheel and a driving piece, the pipe supporting clamp is fixed on the lifting chain, and the driving piece drives the chain wheel to drive the lifting chain and the pipe supporting clamp to move up and down along the third guide rail.

Further, the pipe pallet clamp comprises a fixing portion and a rotating portion, the fixing portion is fixed on the lifting chain, the rotating portion is hinged to the fixing portion, the rotating portion is in a use state and a storage state, the fixing portion and the rotating portion are integrally V-shaped in the use state, and the rotating portion is integrally stored in the fixing portion in the storage state.

Due to the adoption of the technical scheme, the beneficial effects obtained by the application are as follows:

in this application, the sliding seat of the traverse motion assembly of the lifting device can slide along the first guide rail in a reciprocating manner under the driving control of the first driving device, so that the sliding seat drives the support pipe clamp to be far away from or close to an oil pipe placed on an oil pipe frame (not shown in the figure) in the direction perpendicular to the traveling direction of the frame (the width direction of the frame). The lifting frame of the lifting assembly can reciprocate up and down relative to the sliding seat under the driving control of the second driving device, so that the lifting frame drives the supporting pipe clamp to drive the oil pipe to vertically reciprocate up and down relative to the oil pipe frame in the height direction of the frame. The supporting pipe clamp of the supporting pipe assembly can also reciprocate up and down relative to the lifting frame under the driving control of the third driving device, so that the oil pipe is driven to vertically reciprocate up and down relative to the oil pipe frame when the lifting frame is fixed.

This application intelligence workover car elevating gear's sideslip subassembly, lifting unit and support tube subassembly can form organic unified action wholly under each drive arrangement's control, directly drive oil pipe by the support tube clamp and carry out "feed" to the jack catch, accomplish actions such as the unloading of oil pipe, transportation fast. In the process of feeding and discharging, the oil pipe directly vertically moves along a straight line, the oil pipe can reach the grasping position without a plurality of transfer processes, the overall moving stroke is relatively small, the action process is simple and quick, and the well repairing efficiency is greatly improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a lifting device of an intelligent workover rig provided by the present application.

Fig. 2 is a left side structure schematic diagram of an intelligent well workover rig that this application provided.

Fig. 3 is a schematic diagram of a right side structure of an intelligent workover rig provided by the present application.

Fig. 4 is a rear side structure schematic diagram of an intelligent workover rig provided by the present application.

Fig. 5 is an enlarged structural diagram of a part a in fig. 2.

Fig. 6 is an enlarged structural view of a portion B in fig. 3.

Fig. 7 is an enlarged structural view of a portion C in fig. 4.

Wherein,

the automatic lifting device comprises a frame 1, a mechanical arm 2, a claw 3, a sliding seat 4, a first guide rail 5, a first driving device 6, a lifting frame 7, a second guide rail 8, a second driving device 9, a pipe clamp 10, a third guide rail 11, a lifting chain 12, a telescopic rod 13, a fourth driving device 14, a bottom plate 41, a top plate 42, a hydraulic motor 91, a spur rack 92, a gear 93, a fixing part 101, a rotating part 102, a fixed rod 141 and a moving rod 142.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the positional or orientational relationship shown in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 7, the present application provides a lifting device of an intelligent workover rig, the intelligent workover rig includes a frame 1, the lifting device includes:

the transverse moving assembly comprises a sliding seat 4, a first guide rail 5 and a first driving device 6, wherein the first guide rail 5 is arranged on the side edge of the frame 1, the extending direction of the first guide rail 5 is vertical to the advancing direction of the frame 1, and the first driving device 6 drives the sliding seat 4 to move left and right relative to the frame 1 along the first guide rail 5;

the lifting assembly comprises a lifting frame 7, a second guide rail 8 and a second driving device 9, the second guide rail 8 is arranged on the lifting frame 7 and extends along the height direction of the frame 1, and the second driving device 9 drives the lifting frame 7 to move up and down relative to the sliding seat 4;

the pipe supporting component comprises a pipe supporting clamp 10, a third guide rail 11 and a third driving device, the third guide rail 11 is arranged on the lifting frame 7 and extends along the height direction of the frame 1, and the third driving device drives the pipe supporting clamp 10 to move up and down along the third guide rail 11 relative to the lifting frame 7.

In the present application, the sliding seat 4 of the traverse assembly of the lifting device can slide back and forth along the first guide rail 5 under the driving control of the first driving device 6, so that the sliding seat 4 drives the pipe clamp 10 to move away from or close to an oil pipe placed on an oil pipe rack (not shown in the figure) in a direction perpendicular to the traveling direction of the vehicle frame 1 (the width direction of the vehicle frame 1). The lifting frame 7 of the lifting assembly can reciprocate up and down relative to the sliding seat 4 under the driving control of the second driving device 9, so that the lifting frame 7 drives the pipe clamp 10 to drive the oil pipe to reciprocate up and down vertically relative to the oil pipe frame in the height direction of the vehicle frame 1. The supporting pipe clamp 10 of the supporting pipe assembly can also reciprocate up and down relative to the lifting frame 7 under the driving control of the third driving device, and the lifting frame 7 is fixed to drive the oil pipe to vertically reciprocate up and down relative to the oil pipe frame, so that the loading and unloading of the oil pipe are completed.

In the structure, the intelligent workover rig further comprises a mechanical arm assembly, the mechanical arm assembly comprises a mechanical arm 2 and a clamping jaw 3, the mechanical arm 2 is arranged on the frame 1, and the clamping jaw 3 is connected with the mechanical arm 2 and driven by the mechanical arm 2 to move freely. The mechanical arm 2 of the mechanical arm component can freely and flexibly move, the claw 3 is driven to move and run straight on the oil pipe, and the claw 3 can conveniently grab or place the oil pipe quickly from any angle and any position.

When the well repairing operation is carried out, firstly, the intelligent well repairing vehicle is driven to a site oil well, and the angle of the intelligent well repairing vehicle or the angle of the tubing rack is adjusted, so that the tubing rack is arranged on the left side or the right side or the left side and the right side of the vehicle frame 1. When an oil pipe is loaded, the sliding seat 4 of the intelligent well repairing vehicle slides out along the first guide rail 5 and approaches the oil pipe frame, meanwhile, the lifting frame 7 vertically moves downwards under the driving control of the second driving device 9, and the supporting pipe clamp 10 vertically moves downwards under the oil pipe on the oil pipe frame under the driving control of the third driving device. Then the pipe supporting clamp 10 clamps the oil pipe when vertically moving up to the oil pipe rack under the control of the third driving device and vertically moves to the designated position under the driving of the third driving device or the lifting rack 7. In the whole action process, the mechanical arm 2 drives the claw 3 to move freely and drive the claw 3 to run straight to grab the oil pipe quickly, and then the oil pipe is controlled by the mechanical arm 2 to face and be aligned to a wellhead to be transported under the holding of the claw 3.

When the oil pipe is discharged, the clamping jaw 3 grabs the oil pipe drawn out from an oil well, the oil pipe is quickly moved to the position of the pipe supporting clamp 10 of the pipe supporting assembly under the driving control of the mechanical arm 2, the oil pipe is placed on the pipe supporting clamp 10, the pipe supporting clamp 10 drives the oil pipe to vertically move downwards to the position of the oil pipe frame, the oil pipe is placed on the oil pipe frame, and the specific action process refers to the feeding process of the oil pipe. In addition, when the blanking operation is carried out on the oil pipe, the mechanical arm 2 is directly controlled to quickly turn and move to place the oil pipe on the oil pipe frame after the oil pipe is gripped by the clamping jaws 3.

For the action processes of loading, unloading, transferring and the like of the oil pipe by using the intelligent workover rig, a plurality of actions can be selected and controlled to be carried out simultaneously or a plurality of actions can be selected and controlled to be carried out step by step according to the habit of an on-site operation space or an operator.

It can be seen from the above that the sideslip subassembly, the lifting unit and the pipe supporting subassembly of the lifting device of the intelligent workover rig can form an organic unified action whole under the control of each driving device, and the pipe supporting clamp 10 directly drives the oil pipe to feed the clamping jaw 3, so that the actions of loading, unloading, transferring and the like of the oil pipe can be rapidly completed. In the process of feeding and discharging, the oil pipe directly vertically moves along a straight line, the oil pipe can reach the grasping position without a plurality of transfer processes, the overall moving stroke is relatively small, the action process is simple and quick, and the well repairing efficiency is greatly improved.

Furthermore, the lifting device further comprises a length measuring assembly, the length measuring assembly comprises a telescopic rod 13 and a fourth driving device 14, the telescopic rod 13 is fixed to the lifting frame 7, the telescopic direction of the telescopic rod 13 is perpendicular to the movement direction of the lifting frame 7, and the telescopic rod 13 extends or shortens through the fourth driving device 14.

As shown in fig. 3 and 6, the lifting device of the intelligent workover rig of the application is further arranged on the length measuring assembly, and under the control of the fourth driving device 14, the telescopic rod 13 fixed on the lifting frame 7 can be automatically extended or shortened to compare the oil pipes, so that the length of the feeding and discharging oil pipes can be measured, and the controllability of oil pipe replacement and maintenance in the workover process can be improved. The telescopic direction of the telescopic rod 13 is perpendicular to the moving direction of the lifting frame 7, namely the telescopic direction of the telescopic rod 13 is the same as the placing direction of an oil pipe on the supporting pipe clamp 10, so that the telescopic rod 13 can measure the length of the oil pipe in the process of extension or shortening.

In the embodiment shown in fig. 3, two ends of the telescopic rod 13 are respectively provided with a retaining ring, so that the oil pipes can be compared more conveniently, and the accuracy of measuring the length of the oil pipes is improved.

For the structure of the telescopic cylinder, the telescopic rod 13 further comprises a fixed rod 141 and a moving rod 142, the fixed rod 141 is fixed on the upper part of the lifting frame 7, and the moving rod 142 is slidably disposed on the fixed rod 141 and slides towards the rear of the frame 1 relative to the fixed rod 141.

As shown in fig. 6, the fixed rod 141 of the telescopic rod 13 is fixed on the upper portion of the crane 7, the moving rod 142 is sleeved with the fixed rod 141, the fourth driving device 14 is an oil cylinder, one end of the oil cylinder is fixed on the fixed rod 141, the telescopic end of the oil cylinder is fixed on the moving rod 142, and the moving rod 142 is driven to extend or shorten relative to the fixed rod 141 in the process of extending or retracting the telescopic end of the oil cylinder. The fixed rod 141 can be further provided with a guide rail for limiting the movement of the oil cylinder, so that the telescopic end of the oil cylinder can stably drive the movable rod 142 to move, and the efficiency and accuracy of oil pipe length measurement are improved.

In the process of extension or shortening of telescopic link 13, move pole 142 and move towards the rear oil well department of frame 1, make the whole oil pipe relatively close to the oil well on the one hand, make things convenient for grabbing of jack catch 3 or below, on the other hand can avoid moving the pole 142 antedisplacement to cause its and driver's cabin space conflict, influence operating personnel's use to effectively improve length measuring device's practicality.

Regarding the structure of the sliding seat 4, further, the sliding seat 4 includes a bottom plate 41 and a top plate 42, the bottom plate 41 moves along the first guide rail 5, the top plate 42 supports and fixes the crane 7, and when the bottom plate 41 moves to the outermost edge of the first guide rail 5, the projection of the crane 7 in the vertical direction is located outside the vehicle frame 1.

As shown in fig. 7, the sliding seat 4 is integrally arranged in an inclined manner towards the outer side of the frame 1, so that when the sliding seat 4 moves to the edge of the first guide rail 5, the lifting frame 7 is integrally positioned at the outer side of the frame 1, thereby conveniently avoiding friction conflict between the lifting frame 7 and the frame 1 during the up-and-down movement process, causing unnecessary interference to the movement of the lifting frame 7, and on the other hand, the lifting frame 7 can be closer to the oil pipe frame, thereby being beneficial to lifting and moving the oil pipe by the oil pipe clamp 10, and improving the usability of the whole equipment. Specifically, the middle connecting plate of the sliding seat 4 inclines towards the outer side of the frame 1 to form a diamond structure, and the bottom plate 41 moves along the first guide rail 5 to drive the lifting frame 7 on the top plate 42 to move outwards.

Further, the lifting device at least comprises two supporting pipe assemblies, and the two supporting pipe assemblies are arranged on the same side edge of the frame 1 at intervals. The utility model provides an intelligence workover car homonymy interval configuration two at least trusteeship subassemblies, the trusteeship of two at least trusteeship subassemblies presss from both sides 10 and can lift removal oil pipe jointly from two positions of oil pipe, makes oil pipe remove more steadily, prevents to squint or drop at the in-process oil pipe of unloading.

Furthermore, the intelligent workover rig is provided with two sets of lifting devices, and the lifting devices are respectively located on the left side and the right side of the frame. This application intelligent workover car's both sides arrange elevating gear simultaneously, can make things convenient for operating personnel to go up the unloading operation from arbitrary one side of frame 1 to oil pipe, improve the operating efficiency greatly.

As a preferred embodiment, as shown in fig. 1 to 4, the intelligent workover rig includes two sets of lifting devices, i.e., four sets of stinger components and four sets of lifting components, wherein the four sets of stinger components and the four sets of lifting components are in one-to-one correspondence and are uniformly distributed on the left and right sides of the frame 1 two by two, thereby facilitating to improve the stability and stability of oil pipe movement and greatly improving the operation efficiency.

For the number of the pipe supporting assemblies and the lifting assemblies, the number of the pipe supporting assemblies is not limited, and the pipe supporting assemblies and the lifting assemblies can be arranged into other numbers of pipe supporting assemblies and other numbers of lifting assemblies so as to complete the loading and unloading operation of the oil pipe together.

For the specific structure of the second driving device 9, as shown in fig. 5 and 6, the second driving device 9 includes a hydraulic motor 91, a spur rack 92 and a gear 93, the hydraulic motor 91 is fixed to the sliding seat 4, the spur rack 92 is fixed to the lifting frame 7 and is parallel to the second guide rail 8, the gear 93 is arranged on the rotating shaft of the hydraulic motor 91 and is engaged with the spur rack 92, and the hydraulic motor 91 drives the gear 93 to rotate relative to the spur rack 92 to drive the lifting frame 7 to move up and down along the second guide rail 8.

This application adopts gear 93 rack matched with mode to carry out drive control to crane 7, and simple structure not only, operation control is convenient, has higher transmission precision moreover, and work is steady, and the reliability is high, has higher life.

The second driving device 9 can also be set to be in a belt transmission or ball screw mode to drive and control the lifting frame 7, which is not described herein.

As for the specific structure of the third driving device, the third driving device includes a lifting chain 12, a chain wheel and a driving element, the pipe clamp 10 is fixed to the lifting chain 12, and the driving element drives the chain wheel to drive the lifting chain 12 and the pipe clamp 10 to move up and down along the third guide rail 11.

As shown in fig. 5 and 6, the third guide rail 11 is disposed at the outermost side of the crane 7 in the vertical direction, the third guide rail 11 is composed of two fixed folding plates and a clamping channel is formed between the two folding plates, the lifting chain 12 is disposed in the clamping channel of the third guide rail 11, and the pallet clamp 10 is fixed on the lifting chain 12 and vertically moves along the third guide rail 11 in the clamping channel. The driving member (not shown) of the third driving device may be a hydraulic motor 91 or an electric motor, and a sprocket is mounted on a rotating shaft of the third driving device, and the sprocket and the chain drive the pipe clamp 10 to vertically move up and down along the third guide rail 11 during the process of rotating and meshing to complete the loading and unloading operation of the oil pipe.

As shown in fig. 6, the specific structure of the conduit clamp 10 further includes a fixed portion 101 and a rotating portion 102, the fixed portion 101 is fixed to the lifting chain 12, the rotating portion 102 is hinged to the fixed portion 101, the rotating portion 102 has a use state and a storage state, the fixed portion 101 and the rotating portion 102 are integrally V-shaped in the use state, and the rotating portion 102 is integrally stored in the fixed portion 101 in the storage state.

The utility model provides a pipe clamp 10 is the V-arrangement when using and removes oil pipe with better centre gripping, can effectively prevent that oil pipe from vibrating and droing at last unloading removal in-process, improves the stability and the stationarity that oil pipe removed. After the use, the rotating part 102 can be accommodated in the fixing part 101, so that the occupied space of the pipe supporting clamp 10 is reduced, the pipe supporting clamp 10 is miniaturized, the fixing part 101 has a protection effect on the rotating part 102, and the service life of the pipe supporting clamp 10 is prolonged.

Where not mentioned in this application, can be accomplished using or referencing existing technology.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (9)

1. The utility model provides a lifting device of intelligence workover car, intelligence workover car includes the frame, its characterized in that, lifting device includes:

the transverse moving assembly comprises a sliding seat, a first guide rail and a first driving device, the first guide rail is arranged on the side edge of the frame, the extending direction of the first guide rail is vertical to the advancing direction of the frame, and the first driving device drives the sliding seat to move left and right relative to the frame along the first guide rail;

the lifting assembly comprises a lifting frame, a second guide rail and a second driving device, the second guide rail is arranged on the lifting frame and extends along the height direction of the frame, and the second driving device drives the lifting frame to move up and down relative to the sliding seat;

the third guide rail is arranged on the lifting frame and extends along the height direction of the frame, and the third driving device drives the pipe clamp to move up and down along the third guide rail relative to the lifting frame.

2. The lifting device of an intelligent workover rig of claim 1, wherein the lifting device further comprises a length measuring component, the length measuring component comprises a telescopic rod and a fourth driving device, the telescopic rod is fixed to the lifting frame, the telescopic direction of the telescopic rod is perpendicular to the movement direction of the lifting frame, and the telescopic rod is extended or shortened through the fourth driving device.

3. The lifting device of an intelligent workover rig according to claim 2, wherein the telescopic rod comprises a fixed rod and a moving rod, the fixed rod is fixed on the upper part of the lifting frame, and the moving rod is slidably arranged on the fixed rod and slides towards the rear of the frame relative to the fixed rod.

4. The lifting device of an intelligent workover rig according to claim 1, wherein the sliding seat comprises a bottom plate and a top plate, the bottom plate moves along the first guide rail, the top plate supports and fixes the lifting frame, and when the bottom plate moves to the outermost edge of the first guide rail, the projection of the lifting frame in the vertical direction is positioned outside the frame.

5. The lift device of an intelligent workover rig of claim 1, wherein the lift device comprises at least two stinger assemblies, and the two stinger assemblies are arranged at intervals.

6. The lifting device of an intelligent workover rig according to claim 5, wherein the intelligent workover rig is provided with two sets of the lifting devices, and the lifting devices are respectively positioned at the left side and the right side of the frame.

7. The lifting device of an intelligent workover rig according to claim 1, wherein the second driving device comprises a hydraulic motor, a spur rack and a gear, the hydraulic motor is fixed on the sliding seat, the spur rack is fixed on the lifting frame and is arranged in parallel with the second guide rail, the gear is arranged on a rotating shaft of the hydraulic motor and is meshed with the spur rack, and the hydraulic motor drives the gear to rotate relative to the spur rack to drive the lifting frame to move up and down along the second guide rail.

8. The elevator apparatus of claim 1, wherein the third driving means comprises a lifting chain, a sprocket, and a driving member, the pipe clamp is fixed to the lifting chain, and the driving member drives the sprocket to move the lifting chain and the pipe clamp to move up and down along the third guide rail.

9. The elevator apparatus of claim 8, wherein the pipe clamp comprises a fixing portion fixed to the lifting chain and a rotating portion hinged to the fixing portion, the rotating portion having a use state in which the fixing portion and the rotating portion are integrally V-shaped and a storage state in which the rotating portion is integrally stored in the fixing portion.

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