阅读说明：本技术 动力吊卡 (Power elevator ) 是由 范晓贤 于法军 沈君芳 王春垒 王革联 杨宁 贾艳丽 于 2020-07-03 设计创作，主要内容包括：本发明提供了一种动力吊卡,涉及油田修井作业设备的技术领域,包括吊卡主体、夹持机构、驱动机构、导向机构、传动机构和第一锁紧机构；夹持机构与吊卡主体之间形成用于夹持管柱的夹持通道；驱动机构能够调节夹持通道的开启或闭合；利用驱动机构在带动传动机构进行运动的基础上,能够带动导向机构在水平方向运动,利用导向机构的倾斜面调节第一锁紧机构相对于竖直方向的移动,进而利用第一锁紧机构锁定夹持通道的关闭状态,保证了夹持机构和吊卡主体对管柱的夹持的可靠性；同一个驱动机构便能够实现控制夹持通道的启闭和锁紧动作,缓解了现有技术中存在的锁舌和活门结构复杂,左右重心偏移较大,效率低以及制造和维修成本高的技术问题。(The invention provides a power elevator, which relates to the technical field of oil field workover equipment and comprises an elevator main body, a clamping mechanism, a driving mechanism, a guide mechanism, a transmission mechanism and a first locking mechanism, wherein the elevator main body is provided with a clamping mechanism; a clamping channel for clamping the pipe column is formed between the clamping mechanism and the elevator main body; the driving mechanism can adjust the opening or closing of the clamping channel; the driving mechanism is utilized to drive the transmission mechanism to move, the guide mechanism can be driven to move in the horizontal direction, the inclined surface of the guide mechanism is utilized to adjust the movement of the first locking mechanism relative to the vertical direction, and then the first locking mechanism is utilized to lock the closing state of the clamping channel, so that the reliability of the clamping mechanism and the elevator main body for clamping the tubular column is ensured; the same driving mechanism can realize the opening and closing and locking actions of the control clamping channel, and the technical problems of complex structure, large left and right gravity center deviation, low efficiency and high manufacturing and maintenance cost of the spring bolt and the valve in the prior art are solved.)

1. A powered elevator, comprising: the elevator comprises an elevator main body, a clamping mechanism, a driving mechanism, a guide mechanism, a transmission mechanism and a first locking mechanism;

the clamping mechanism is connected with the elevator main body, and a clamping channel for clamping a pipe column is formed between the clamping mechanism and the elevator main body;

the driving mechanism is in transmission connection with the clamping mechanism through the transmission mechanism, and the driving mechanism is used for driving the clamping mechanism to rotate relative to the elevator main body through the transmission mechanism so as to adjust the opening or closing of the clamping channel;

the output end of the driving mechanism is connected with the guide mechanism, an inclined plane is arranged on the guide mechanism, one end of the first locking mechanism is abutted against the inclined plane, a locking hole is arranged on the transmission mechanism, and the driving mechanism adjusts the posture of the first locking mechanism through the guide mechanism so as to enable the first locking mechanism to be changed between a first state and a second state;

when the first locking mechanism is in a first state, the driving mechanism drives the guide mechanism to move along a first direction, one end of the first locking mechanism is in contact with the lowest point of the inclined surface of the guide mechanism, and the other end of the first locking mechanism is inserted into a locking hole of the transmission mechanism, so that the transmission mechanism is fixed;

when the first locking mechanism is in a second state, the driving mechanism drives the guide mechanism to move along a second direction, one end of the first locking mechanism is in contact with the highest point of the inclined surface of the guide mechanism, and the other end of the first locking mechanism is separated from the locking hole of the transmission mechanism.

2. The powered elevator of claim 1, wherein the elevator body comprises a support frame;

be provided with the through-hole on the support frame, first locking mechanism inserts and locates in the through-hole, still be provided with slide channel on the support frame, guiding mechanism slips and locates in the slide channel, guiding mechanism be located one side of slide channel with the actuating mechanism transmission is connected, the inclined plane is located on guiding mechanism's the another side, actuating mechanism is used for driving guiding mechanism along slide channel back and forth movement is in order to pass through the inclined plane is adjusted first locking mechanism is in the vertical reciprocating motion of through-hole.

3. The powered elevator as defined in claim 2, wherein said first locking mechanism comprises a first pin, a first spring, a fixed sleeve and a rolling bearing;

the fixed sleeve cover is arranged on the through hole, and the fixed sleeve is connected with the support frame;

the first pin shaft and the first spring are positioned in the fixed sleeve, two ends of the first spring are respectively abutted against the bottom wall of the fixed sleeve and the first pin shaft, one end, far away from the first spring, of the first pin shaft extends out of the fixed sleeve and is inserted into the through hole, and the first spring has an elastic tendency that the first pin shaft is far away from the bottom wall of the fixed sleeve;

the rolling bearing assembly is fixedly connected with the side wall of the first pin shaft, the rolling bearing assembly is perpendicular to the first pin shaft, and the rolling bearing assembly is abutted to the inclined surface of the guide mechanism and used for rolling along the inclined surface so as to adjust the extension or retraction of the first pin shaft in the vertical direction.

4. The power elevator of claim 3, wherein the drive mechanism comprises a first swing plate;

the locking hole is positioned on the plane of the first swinging plate, the first swinging plate is in transmission connection with the driving mechanism, and the driving mechanism can drive the first swinging plate to rotate in the horizontal direction; when the clamping channel is closed, the locking hole of the first swinging plate moves to the position of the first pin shaft, so that the first pin shaft and the locking hole are fixedly inserted.

5. The power elevator of claim 4, wherein the drive mechanism comprises a hydraulic cylinder and a hydraulic cylinder joint;

the hydraulic cylinder comprises a telescopic rod, the guide mechanism is connected with the telescopic rod, and the telescopic rod is used for driving the guide mechanism to reciprocate along the sliding channel;

the end part of the telescopic rod is connected with the hydraulic cylinder joint, the hydraulic cylinder joint is provided with a long hole, the hydraulic cylinder joint is connected with the transmission mechanism through the long hole, and the transmission mechanism can move relative to the long hole, so that when the telescopic rod drives the guide mechanism to move, the transmission mechanism has a no-load section relative to the hydraulic cylinder joint.

6. The powered elevator of claim 5, wherein the drive mechanism further comprises a cross-piece, a link, a second swing plate, and a tension rod;

the transverse block is connected with the long hole of the hydraulic cylinder joint in a sliding mode through a pin shaft, the transverse block is connected with the second swinging plate in a transmission mode through the connecting rod, the second swinging plate is connected with the first swinging plate in a transmission mode, the first swinging plate is connected with the clamping mechanism in a transmission mode through the pull rod, and the first swinging plate can drive the clamping mechanism to rotate relative to the elevator body through swinging.

7. The powered elevator of claim 6, wherein the clamping mechanism comprises a first clamping door and a second clamping door;

the connecting rod, the second swing plate, the first swing plate and the pull rod form a transmission assembly, the transmission assembly is provided with two groups, two groups of transmission assemblies are arranged in a mirror symmetry mode relative to the central line of the transverse block, one group of transmission assemblies are connected with the first clamping door in a transmission mode, and the other group of transmission assemblies are connected with the second clamping door in a transmission mode, so that the driving mechanism can synchronously adjust the opening or closing of the first clamping door and the second clamping door.

8. The power elevator of claim 7, further comprising a second locking mechanism;

the first clamping door is provided with a first complementary core at the inlet end of the clamping channel, the second clamping door is provided with a second complementary core at the inlet end of the clamping channel, the elevator main body is provided with a third complementary core at the inlet end of the clamping channel, and the first complementary core, the second complementary core and the third complementary core are sequentially connected to form a circular ring structure for clamping a tubular column;

first centre gripping door is close to one side of second centre gripping door is provided with the notch, just second centre gripping door correspond be provided with be used for with notch complex protruding keyhole, second locking mechanism set up in the first centre gripping door, second locking mechanism with the notch corresponds the setting, second locking mechanism with first benefit core transmission is connected, first benefit core is used for receiving the dead weight pressure of tubular column, in order to drive second locking mechanism inserts along vertical direction and locates in the notch protruding keyhole.

9. The powered elevator of claim 8, wherein the second locking mechanism comprises a second pin and a second spring;

a stepped hole is formed in the first clamping door above the notch, the second pin shaft is inserted into the stepped hole and is abutted against the first complementary core, and the first complementary core is used for driving the second pin shaft to move in the stepped hole;

the second spring is sleeved outside the second pin shaft, two ends of the second spring are respectively abutted against the second pin shaft and the step of the stepped hole, and the second spring has an elastic trend of enabling the second pin shaft to be far away from the notch.

10. The powered elevator as set forth in any one of claims 1-9, further comprising a sensing mechanism;

the detection mechanism is arranged on the elevator main body and is in electric signal connection with the driving mechanism, and the detection mechanism is positioned at the end part of the clamping channel and is used for detecting a signal that a pipe column enters the elevator main body and transmitting the signal to the driving mechanism so as to control the opening and closing of the driving mechanism.

Technical Field

The invention relates to the technical field of oil field well repairing operation equipment, in particular to a power elevator.

Background

The elevator is an important device for lifting and lowering an oil pipe in workover operation, the performance of the elevator directly influences the efficiency and the safety of the workover operation, along with the urgent needs of an oil field on reducing the labor intensity of operating personnel, improving the operation safety and improving the working efficiency, the demand on the power elevator of an operation automation matched tool in the current market is increased day by day.

Disclosure of Invention

The invention aims to provide a power elevator to solve the technical problems of complex structures of a lock tongue and a valve, large left-right gravity center deviation, low efficiency and high manufacturing and maintaining cost in the prior art.

The invention provides a power elevator, which comprises: the elevator comprises an elevator main body, a clamping mechanism, a driving mechanism, a guide mechanism, a transmission mechanism and a first locking mechanism;

the clamping mechanism is connected with the elevator main body, and a clamping channel for clamping a pipe column is formed between the clamping mechanism and the elevator main body;

the driving mechanism is in transmission connection with the clamping mechanism through the transmission mechanism, and the driving mechanism is used for driving the clamping mechanism to rotate relative to the elevator main body through the transmission mechanism so as to adjust the opening or closing of the clamping channel;

the output end of the driving mechanism is connected with the guide mechanism, an inclined plane is arranged on the guide mechanism, one end of the first locking mechanism is abutted against the inclined plane, a locking hole is arranged on the transmission mechanism, and the driving mechanism adjusts the posture of the first locking mechanism through the guide mechanism so as to enable the first locking mechanism to be changed between a first state and a second state;

when the first locking mechanism is in a first state, the driving mechanism drives the guide mechanism to move along a first direction, one end of the first locking mechanism is in contact with the lowest point of the inclined surface of the guide mechanism, and the other end of the first locking mechanism is inserted into a locking hole of the transmission mechanism, so that the transmission mechanism is fixed;

when the first locking mechanism is in a second state, the driving mechanism drives the guide mechanism to move along a second direction, one end of the first locking mechanism is in contact with the highest point of the inclined surface of the guide mechanism, and the other end of the first locking mechanism is separated from the locking hole of the transmission mechanism.

In a preferred embodiment of the present invention, the elevator body includes a support frame;

be provided with the through-hole on the support frame, first locking mechanism inserts and locates in the through-hole, still be provided with slide channel on the support frame, guiding mechanism slips and locates in the slide channel, guiding mechanism be located one side of slide channel with the actuating mechanism transmission is connected, the inclined plane is located on guiding mechanism's the another side, actuating mechanism is used for driving guiding mechanism along slide channel back and forth movement is in order to pass through the inclined plane is adjusted first locking mechanism is in the vertical reciprocating motion of through-hole.

In a preferred embodiment of the present invention, the first locking mechanism includes a first pin, a first spring, a fixed sleeve and a rolling bearing;

the fixed sleeve cover is arranged on the through hole, and the fixed sleeve is connected with the support frame;

the first pin shaft and the first spring are positioned in the fixed sleeve, two ends of the first spring are respectively abutted against the bottom wall of the fixed sleeve and the first pin shaft, one end, far away from the first spring, of the first pin shaft extends out of the fixed sleeve and is inserted into the through hole, and the first spring has an elastic tendency that the first pin shaft is far away from the bottom wall of the fixed sleeve;

the rolling bearing assembly is fixedly connected with the side wall of the first pin shaft, the rolling bearing assembly is perpendicular to the first pin shaft, and the rolling bearing assembly is abutted to the inclined surface of the guide mechanism and used for rolling along the inclined surface so as to adjust the extension or retraction of the first pin shaft in the vertical direction.

In a preferred embodiment of the present invention, the transmission mechanism includes a first swing plate;

the locking hole is positioned on the plane of the first swinging plate, the first swinging plate is in transmission connection with the driving mechanism, and the driving mechanism can drive the first swinging plate to rotate in the horizontal direction; when the clamping channel is closed, the locking hole of the first swinging plate moves to the position of the first pin shaft, so that the first pin shaft and the locking hole are fixedly inserted.

In a preferred embodiment of the invention, the drive mechanism comprises a hydraulic cylinder and a hydraulic cylinder joint;

the hydraulic cylinder comprises a telescopic rod, the guide mechanism is connected with the telescopic rod, and the telescopic rod is used for driving the guide mechanism to reciprocate along the sliding channel;

the end part of the telescopic rod is connected with the hydraulic cylinder joint, the hydraulic cylinder joint is provided with a long hole, the hydraulic cylinder joint is connected with the transmission mechanism through the long hole, and the transmission mechanism can move relative to the long hole, so that when the telescopic rod drives the guide mechanism to move, the transmission mechanism has a no-load section relative to the hydraulic cylinder joint.

In a preferred embodiment of the invention, the transmission mechanism further comprises a cross block, a connecting rod, a second swinging plate and a pull rod;

the transverse block is connected with the long hole of the hydraulic cylinder joint in a sliding mode through a pin shaft, the transverse block is connected with the second swinging plate in a transmission mode through the connecting rod, the second swinging plate is connected with the first swinging plate in a transmission mode, the first swinging plate is connected with the clamping mechanism in a transmission mode through the pull rod, and the first swinging plate can drive the clamping mechanism to rotate relative to the elevator body through swinging.

In a preferred embodiment of the present invention, the clamping mechanism comprises a first clamping door and a second clamping door;

the connecting rod, the second swing plate, the first swing plate and the pull rod form a transmission assembly, the transmission assembly is provided with two groups, two groups of transmission assemblies are arranged in a mirror symmetry mode relative to the central line of the transverse block, one group of transmission assemblies are connected with the first clamping door in a transmission mode, and the other group of transmission assemblies are connected with the second clamping door in a transmission mode, so that the driving mechanism can synchronously adjust the opening or closing of the first clamping door and the second clamping door.

In a preferred embodiment of the invention, the device further comprises a second locking mechanism;

the first clamping door is provided with a first complementary core at the inlet end of the clamping channel, the second clamping door is provided with a second complementary core at the inlet end of the clamping channel, the elevator main body is provided with a third complementary core at the inlet end of the clamping channel, and the first complementary core, the second complementary core and the third complementary core are sequentially connected to form a circular ring structure for clamping a tubular column;

first centre gripping door is close to one side of second centre gripping door is provided with the notch, just second centre gripping door correspondence is provided with and is used for notch complex protruding keyhole, second locking mechanism set up in the first centre gripping door, second locking mechanism with the notch corresponds the setting, second locking mechanism with first benefit core transmission is connected, first benefit core is used for receiving the dead weight pressure of tubular column, in order to drive second locking mechanism inserts along vertical direction and locates in the notch protruding keyhole.

In a preferred embodiment of the present invention, the second locking mechanism includes a second pin and a second spring;

a stepped hole is formed in the first clamping door above the notch, the second pin shaft is inserted into the stepped hole and is abutted against the first complementary core, and the first complementary core is used for driving the second pin shaft to move in the stepped hole;

the second spring is sleeved outside the second pin shaft, two ends of the second spring are respectively abutted against the second pin shaft and the step of the stepped hole, and the second spring has an elastic trend of enabling the second pin shaft to be far away from the notch.

In a preferred embodiment of the invention, the device further comprises a detection mechanism;

the detection mechanism is arranged on the elevator main body and is in electric signal connection with the driving mechanism, and the detection mechanism is positioned at the end part of the clamping channel and is used for detecting a signal that a pipe column enters the elevator main body and transmitting the signal to the driving mechanism so as to control the opening and closing of the driving mechanism.

The invention provides a power elevator, which comprises: the elevator comprises an elevator main body, a clamping mechanism, a driving mechanism, a guide mechanism, a transmission mechanism and a first locking mechanism; the clamping mechanism is connected with the elevator main body, and a clamping channel for clamping the pipe column is formed between the clamping mechanism and the elevator main body; the driving mechanism is in transmission connection with the clamping mechanism through a transmission mechanism, and drives the clamping mechanism to rotate relative to the elevator main body through the transmission mechanism so as to adjust the opening or closing of the clamping channel; furthermore, the output end of the driving mechanism is connected with the guide mechanism, the guide mechanism is provided with an inclined plane, one end of the first locking mechanism is abutted against the inclined plane, the transmission mechanism is provided with a locking hole, and the driving mechanism adjusts the posture of the first locking mechanism through the guide mechanism so as to enable the first locking mechanism to be changed between a first state and a second state; when the first locking mechanism is in a first state, the driving mechanism drives the guide mechanism to move along a first direction, one end of the first locking mechanism is in contact with the lowest point of the inclined surface of the guide mechanism, and the other end of the first locking mechanism is inserted into a locking hole of the transmission mechanism so that the transmission mechanism is fixed; when the first locking mechanism is in a second state, the driving mechanism drives the guide mechanism to move along a second direction, one end of the first locking mechanism is in contact with the highest point of the inclined surface of the guide mechanism, and the other end of the first locking mechanism is separated from the locking hole of the transmission mechanism; in other words, the driving mechanism can drive the guide mechanism to move in the horizontal direction on the basis of driving the transmission mechanism to move, and meanwhile, the inclined surface of the guide mechanism is used for adjusting the movement of the first locking mechanism relative to the vertical direction, so that the first locking mechanism can be used for locking the closed state of the clamping channel, and the reliability of the clamping mechanism and the elevator main body for clamping the tubular column is ensured; and the same driving mechanism can be used for controlling the opening and closing of the clamping channel and the locking action of the first pre-tightening mechanism, so that the technical problems of complex structure of a lock tongue and a valve, large left and right gravity center deviation, low efficiency and high manufacturing and maintenance cost in the prior art are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure of a power elevator according to an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of the power elevator from another perspective according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of a support frame of the power elevator according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken along the line A-A of the power elevator shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the powered elevator of FIG. 3 along an inclined plane;

FIG. 6 is a schematic structural diagram of a second pretensioning mechanism of the power elevator according to the embodiment of the present invention;

fig. 7 is a partially enlarged schematic structural view of a second pretensioning mechanism of the power elevator provided in the embodiment of fig. 6.

Icon: 100-an elevator body; 101-a support frame; 111-a slide channel; 102-a third patch core; 200-a clamping mechanism; 201-a first gripper door; 211-a first patch core; 221-a stepped hole; 202-a second gripper door; 212-a second patch core; 222-raised keyhole; 300-a drive mechanism; 301-hydraulic cylinder; 302-hydraulic cylinder joint; 312-elongated holes; 400-a guide mechanism; 401-inclined plane; 500-a transmission mechanism; 501-a first swing plate; 511-a locking hole; 502-horizontal block; 503-connecting rod; 504-a second swing plate; 505-a pull rod; 600-a first locking mechanism; 601-a first pin; 602-a first spring; 603-fixing the sleeve; 604-rolling bearing; 700-clamping the channel; 800-a second locking mechanism; 801-a second pin; 802-a second spring; 900-detection mechanism.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, the present embodiment provides a power elevator, including: the elevator main body 100, the clamping mechanism 200, the driving mechanism 300, the guide mechanism 400, the transmission mechanism 500 and the first locking mechanism 600; the gripping mechanism 200 is connected with the elevator main body 100, and a gripping passage 700 for gripping a pipe string is formed between the gripping mechanism 200 and the elevator main body 100; the driving mechanism 300 is in transmission connection with the clamping mechanism 200 through the transmission mechanism 500, and the driving mechanism 300 is used for driving the clamping mechanism 200 to rotate relative to the elevator main body 100 through the transmission mechanism 500 so as to adjust the opening or closing of the clamping channel 700; the output end of the driving mechanism 300 is connected with the guide mechanism 400, the guide mechanism 400 is provided with an inclined surface 401, one end of the first locking mechanism 600 is abutted against the inclined surface 401, the transmission mechanism 500 is provided with a locking hole 511, and the driving mechanism 300 adjusts the posture of the first locking mechanism 600 through the guide mechanism 400 so as to enable the first locking mechanism 600 to be changed between a first state and a second state; when the first locking mechanism 600 is in the first state, the driving mechanism 300 drives the guiding mechanism 400 to move along the first direction, one end of the first locking mechanism 600 contacts with the lowest point of the inclined surface 401 of the guiding mechanism 400, and the other end of the first locking mechanism 600 is inserted into the locking hole 511 of the transmission mechanism 500, so that the transmission mechanism 500 is fixed; when the first locking mechanism 600 is in the second state, the driving mechanism 300 drives the guiding mechanism 400 to move along the second direction, one end of the first locking mechanism 600 contacts with the highest point of the inclined surface 401 of the guiding mechanism 400, and the other end of the first locking mechanism 600 is separated from the locking hole 511 of the transmission mechanism 500.

It should be noted that the power elevator provided in this embodiment is a structure for suspending a tubular string in an automatic workover operation in an oil field, and can perform a relative motion with respect to the elevator main body 100 by using the clamping mechanism 200, so that a clamping passage 700 for suspending a tubing is formed between the clamping mechanism 200 and the elevator main body 100; in this embodiment, the gripping mechanism 200 moves relative to the elevator body 100 in a manner that rotates relative to the elevator body 100 to open or close the suspended tubing formed between the gripping mechanism 200 and the elevator body 100.

In this embodiment, when the pipe column needs to be clamped and suspended by the power elevator, the power elevator is moved to the position of the pipe column, the driving mechanism 300 drives the clamping mechanism 200 to rotate relative to the elevator main body 100 through the transmission mechanism 500, and the pipe column is clamped and fixed by the clamping channel 700; the driving mechanism 300 can adopt a hydraulic cylinder 301 or an air cylinder, and the clamping mechanism 200 is driven to move by using one hydraulic cylinder 301 or one air cylinder; because the driving mechanism 300 is used as a power source, the control of a plurality of hydraulic cylinders and sequence valves in the prior art is avoided, the operation efficiency of the elevator can be improved, the problem that the elevator in the prior art is controlled by the sequence valves to be opened or closed in sequence is solved, and the estimated efficiency is improved by 1 time; further, since only one driving mechanism 300 omits a sequence valve, the structure is simpler and more compact, and the cost is reduced.

Further, in order to ensure the reliability of the clamping channel 700, during the movement of the driving mechanism 300, the guiding mechanism 400 is also driven to move in the horizontal direction, and during the movement of the guiding mechanism 400, the inclined surface 401 is driven to move, because the first locking mechanism 600 abuts against the inclined surface 401, when the first locking mechanism 600 is at different positions of the inclined surface 401, the positions of the first locking mechanism 600 in the vertical direction are different, in other words, the driving mechanism 300 can drive the first locking mechanism 600 to move in the vertical direction through the guiding mechanism 400 on the basis of driving the clamping mechanism 200 by using the transmission mechanism 500, when the driving mechanism 300 drives the clamping mechanism 200 to just complete the closing of the clamping channel 700, at this time, the locking hole 511 on the transmission mechanism 500 moves to the position right below the vertical direction of the first locking mechanism 600, and at this time, the first locking mechanism 600 contacts with the lowest point of the inclined surface 401 of the guiding mechanism 400, therefore, one end of the first locking mechanism 600 close to the locking hole 511 is just inserted into the locking hole 511, and the clamping channel 700 is locked and fixed by the first locking mechanism 600; on the contrary, when the driving mechanism 300 drives the clamping mechanism 200 to open the clamping channel 700, at this time, the driving mechanism 300 will drive the guiding mechanism 400 to move first, the inclined surface 401 of the guiding mechanism 400 will gradually drive the first locking mechanism 600 to ascend until being separated from the locking hole 511, at this time, the transmission mechanism 500 is in a movable state, and the driving mechanism 300 can drive the clamping mechanism 200 to rotate relative to the elevator main body 100 by using the transmission mechanism 500, so as to open the clamping channel 700.

In this embodiment, when the first locking mechanism 600 is in the first state, the first locking mechanism 600 and the transmission mechanism 500 are relatively fixed, and the transmission mechanism 500 is in the locked state; the driving mechanism 300 can adopt a hydraulic cylinder 301 or an air cylinder, so that the extending end of the hydraulic cylinder 301 or the air cylinder can be in a contracting state, and the first direction is the contracting direction of the hydraulic cylinder 301 or the air cylinder; on the contrary, when the first locking mechanism 600 is in the second state, the first locking mechanism 600 is separated from the transmission mechanism 500, and the transmission mechanism 500 is in the active state; the driving mechanism 300 may adopt a hydraulic cylinder 301 or an air cylinder, so that the extending end of the hydraulic cylinder 301 or the air cylinder may be in a contracted state, and the second direction is the extending direction of the hydraulic cylinder 301 or the air cylinder; in addition, the first direction may also be a direction in which the hydraulic cylinder 301 or the air cylinder extends, and the second direction may be a direction in which the hydraulic cylinder 301 or the air cylinder contracts, and only the inclination direction of the inclined surface 401 needs to be changed, which is not described herein again.

The embodiment provides a power elevator, includes: the elevator main body 100, the clamping mechanism 200, the driving mechanism 300, the guide mechanism 400, the transmission mechanism 500 and the first locking mechanism 600; the gripping mechanism 200 is connected with the elevator main body 100, and a gripping passage 700 for gripping a pipe string is formed between the gripping mechanism 200 and the elevator main body 100; the driving mechanism 300 is in transmission connection with the clamping mechanism 200 through the transmission mechanism 500, and the driving mechanism 300 drives the clamping mechanism 200 to rotate relative to the elevator main body 100 through the transmission mechanism 500 so as to adjust the opening or closing of the clamping channel 700; further, the output end of the driving mechanism 300 is connected with the guiding mechanism 400, the guiding mechanism 400 is provided with an inclined surface 401, one end of the first locking mechanism 600 abuts against the inclined surface 401, the transmission mechanism 500 is provided with a locking hole 511, and the driving mechanism 300 adjusts the posture of the first locking mechanism 600 through the guiding mechanism 400 so as to enable the first locking mechanism 600 to be changed between the first state and the second state; when the first locking mechanism 600 is in the first state, the driving mechanism 300 drives the guiding mechanism 400 to move along the first direction, one end of the first locking mechanism 600 contacts with the lowest point of the inclined surface 401 of the guiding mechanism 400, and the other end of the first locking mechanism 600 is inserted into the locking hole 511 of the transmission mechanism 500, so that the transmission mechanism 500 is fixed; when the first locking mechanism 600 is in the second state, the driving mechanism 300 drives the guiding mechanism 400 to move along the second direction, one end of the first locking mechanism 600 contacts with the highest point of the inclined surface 401 of the guiding mechanism 400, and the other end of the first locking mechanism 600 is separated from the locking hole 511 of the transmission mechanism 500; in other words, on the basis that the driving mechanism 300 drives the transmission mechanism 500 to move, the guide mechanism 400 can be driven to move in the horizontal direction, meanwhile, the inclined surface 401 of the guide mechanism 400 is used for adjusting the movement of the first locking mechanism 600 relative to the vertical direction, so that the closed state of the clamping channel 700 can be locked by the first locking mechanism 600, and the reliability of the clamping of the tubular column by the clamping mechanism 200 and the elevator main body 100 is ensured; and the same driving mechanism 300 can be used for controlling the opening and closing of the clamping channel 700 and the locking action of the first pre-tightening mechanism, so that the technical problems of complex structures of a bolt and a valve, large left and right gravity center deviation, low efficiency and high manufacturing and maintenance cost in the prior art are solved.

On the basis of the above embodiments, further, in the preferred embodiment of the present invention, the elevator main body 100 includes a support frame 101; the supporting frame 101 is provided with a through hole, the first locking mechanism 600 is inserted into the through hole, the supporting frame 101 is further provided with a sliding channel 111, the guide mechanism 400 is slidably arranged in the sliding channel 111, one side of the guide mechanism 400, which is located on the sliding channel 111, is in transmission connection with the driving mechanism 300, the inclined surface 401 is located on the other side surface of the guide mechanism 400, and the driving mechanism 300 is used for driving the guide mechanism 400 to reciprocate along the sliding channel 111 so as to adjust the vertical reciprocating motion of the first locking mechanism 600 in the through hole through the inclined surface 401.

In this embodiment, in order to limit the horizontal running direction of the guide mechanism 400, the guide mechanism 400 is slidably disposed in the sliding channel 111, wherein the extending direction of the sliding channel 111 is consistent with the extending and retracting direction of the hydraulic cylinder 301 or the air cylinder; meanwhile, a through hole is formed in one side of the sliding channel 111, and the first locking mechanism 600 is inserted into the through hole, wherein one side of the first locking mechanism 600, which is in contact with the inclined surface 401, and the transmission mechanism 500 are located on two sides of the plane of the support frame 101, and when the first locking mechanism 600 is in contact with different positions of the inclined surface 401, the first locking mechanism 600 can move in a vertically downward direction under the action of self weight; or other driving mechanisms 300 can be arranged to drive the first locking mechanism 600 to move in the vertical downward direction, so that the first locking mechanism 600 can be better ensured to be inserted into the locking hole 511.

In the preferred embodiment of the present invention, the first locking mechanism 600 includes a first pin 601, a first spring 602, a fixed sleeve 603 and a rolling bearing assembly 604; the fixing sleeve 603 is covered on the through hole, and the fixing sleeve 603 is connected with the supporting frame 101; the first pin shaft 601 and the first spring 602 are located in the fixing sleeve 603, two ends of the first spring 602 are respectively abutted to the bottom wall of the fixing sleeve 603 and the first pin shaft 601, one end of the first pin shaft 601, which is far away from the first spring 602, extends out of the fixing sleeve 603 and is inserted into the through hole, and the first spring 602 has an elastic tendency that the first pin shaft 601 is far away from the bottom wall of the fixing sleeve 603; the rolling bearing assembly 604 is fixedly connected with the side wall of the first pin 601, the rolling bearing assembly 604 is perpendicular to the first pin 601, and the rolling bearing assembly 604 abuts against the inclined surface 401 of the guide mechanism 400 and is used for rolling along the inclined surface 401 so as to adjust the extension or retraction of the first pin 601 in the vertical direction.

In this embodiment, the fixing sleeve 603 covers the through hole, and the outside of the fixing sleeve 603 may be connected to the surface of the supporting frame 101 through a bolt; and the opening of the fixing sleeve 603 faces the through hole, both the first spring 602 and the first pin 601 are disposed in the fixing sleeve 603, meanwhile, a bulge is arranged on the side wall of the first pin 601, a rolling bearing assembly 604 is sleeved on the bulge, wherein the first pin 601 can abut against the inclined surface 401 of the guide mechanism 400 by using a protrusion and rolling bearing assembly 604, the rolling bearing assembly 604 can more conveniently reciprocate with the inclined surface 401, the position of the first pin 601 in the vertical direction can be adjusted by the inclined surface 401, wherein the first spring 602 may be a compression spring, and the first spring 602 still has elastic potential energy when the first pin 601 contacts with the lowest position of the inclined plane 401, therefore, the first spring 602 can always apply a downward acting force to the first pin 601, and the reliability of the clamping connection between the first pin 601 and the locking hole 511 can be better ensured by utilizing the elastic force of the first spring 602.

In the preferred embodiment of the present invention, the transmission mechanism 500 includes a first swing plate 501; the locking hole 511 is located on the plane of the first swinging plate 501, the first swinging plate 501 is in transmission connection with the driving mechanism 300, and the driving mechanism 300 can drive the first swinging plate 501 to rotate in the horizontal direction; when the clamping channel 700 is closed, the locking hole 511 of the first swing plate 501 moves to the position of the first pin 601, so that the first pin 601 is inserted into the locking hole 511.

The first swinging plate 501 is provided with a plane, when the first swinging plate 501 rotates, the plane of the first swinging plate 501 can move back and forth in the horizontal direction, and when the first swinging plate 501 drives the clamping mechanism 200 and the elevator main body 100 to form the clamping channel 700, the locking hole 511 on the first swinging plate 501 is just right below the first pin 601, so that the first pin 601 can be inserted into the locking hole 511; in other words, when the first swing plate 501 is not moved to a position, even if the first pin 601 is moved to the plane of the first swing plate 501 at this time, the first pin 601 abuts against the plane of the first swing plate 501 at this time, and the first swing plate 501 can still rotate.

In the preferred embodiment of the present invention, the driving mechanism 300 includes a hydraulic cylinder 301 and a hydraulic cylinder joint 302; the hydraulic cylinder 301 comprises a telescopic rod, the guide mechanism 400 is connected with the telescopic rod, and the telescopic rod is used for driving the guide mechanism 400 to move back and forth along the sliding channel 111; the end of the telescopic rod is connected with the hydraulic cylinder joint 302, the hydraulic cylinder joint 302 is provided with a long hole 312, the hydraulic cylinder joint 302 is connected with the transmission mechanism 500 through the long hole 312, and the transmission mechanism 500 can move relative to the long hole 312, so that when the telescopic rod drives the guide mechanism 400 to move, the transmission mechanism 500 has a section of no-load section relative to the hydraulic cylinder joint 302.

In this embodiment, the hydraulic cylinder 301 can achieve a reciprocating motion in one direction, the telescopic rod of the hydraulic cylinder 301 is connected to the guiding mechanism 400, wherein the guiding mechanism 400 can move synchronously with the movement of the telescopic rod, however, the transmission mechanism 500 is connected to the telescopic rod of the hydraulic cylinder 301 through the hydraulic cylinder joint 302, and the hydraulic cylinder joint 302 is provided with the elongated hole 312, so when the direction of the movement of the telescopic rod of the hydraulic cylinder 301 is opposite to the surface where the transmission mechanism 500 and the elongated hole 312 abut against each other, the movement of the hydraulic cylinder 301 only drives the guiding mechanism 400 to operate, and the transmission mechanism 500 stays the length of the elongated hole 312 at the original position due to the existence of the idle section, thereby enabling the hydraulic cylinder 301 to drive the position of the first pin 601 first, without the first swing plate 501 interfering with the first pin 601.

Specifically, the length of the elongated hole 312 may be 15mm, and the transmission mechanism 500 may abut against both sides of the elongated hole 312; when the first pin 601 is located in the locking hole 511, the transmission mechanism 500 abuts against one side edge of the long hole 312, when the hydraulic cylinder 301 is opened, the hydraulic cylinder 301 drives the guide mechanism 400 to move in the sliding channel 111 through the telescopic rod, and the first pin 601 is gradually separated from the locking hole 511 in the moving process of the inclined surface 401; at this time, the hydraulic cylinder joint 302 also moves along with the telescopic rod, but due to the existence of the long hole 312, the transmission mechanism 500 is in a stop state at this time, until the hydraulic cylinder 301 drives the hydraulic cylinder joint 302 to move for 15mm, at this time, the transmission mechanism 500 can act under the action of the hydraulic cylinder joint 302, and at this time, the first pin 601 is separated from the locking hole 511, so that the first pin 601 and the first swinging plate 501 cannot interfere with each other; on the contrary, when the first pin 601 is separated from the locking hole 511, the transmission mechanism 500 abuts against the other side edge of the elongated hole 312, when the hydraulic cylinder 301 is opened, the hydraulic cylinder 301 drives the guide mechanism 400 to move in the sliding channel 111 through the telescopic rod, and the first pin 601 is gradually pressed on the plane of the first swinging plate 501 under the action of the first spring 602 in the moving process of the inclined surface 401; at this moment, the hydraulic cylinder joint 302 can also move along with the telescopic rod, but the transmission mechanism 500 is in a stop state due to the existence of the long hole 312, until the hydraulic cylinder 301 drives the hydraulic cylinder joint 302 to move for 15mm, the transmission mechanism 500 can act under the action of the hydraulic cylinder joint 302, the first swinging plate 501 can drive the locking hole 511 to move to the position of the first pin shaft 601 after finally moving in place, and at this moment, the first pin shaft 601 is fixedly inserted into the locking hole 511 to complete the locking action.

In the preferred embodiment of the present invention, the transmission mechanism 500 further comprises a cross block 502, a connecting rod 503, a second swinging plate 504 and a pull rod 505; the transverse block 502 is connected with the long hole 312 of the hydraulic cylinder joint 302 in a sliding mode through a pin shaft, the transverse block 502 is connected with the second swinging plate 504 in a transmission mode through a connecting rod 503, the second swinging plate 504 is connected with the first swinging plate 501 in a transmission mode, the first swinging plate 501 is connected with the clamping mechanism 200 in a transmission mode through a pull rod 505, and the first swinging plate 501 can drive the clamping mechanism 200 to rotate relative to the elevator body through swinging.

In the preferred embodiment of the present invention, the gripper mechanism 200 includes a first gripper door 201 and a second gripper door 202; the connecting rod 503, the second swinging plate 504, the first swinging plate 501 and the pull rod 505 form two sets of transmission assemblies, the two sets of transmission assemblies are arranged in a mirror symmetry mode relative to the central line of the transverse block 502, one set of transmission assemblies are in transmission connection with the first clamping door 201, and the other set of transmission assemblies are in transmission connection with the second clamping door 202, so that the driving mechanism 300 can synchronously adjust the opening or closing of the first clamping door 201 and the second clamping door 202.

In addition, the first locking mechanisms 600 may also be provided in two sets, the two sets of first locking mechanisms 600 are disposed corresponding to the two sets of first swing rods, and the two sets of first locking mechanisms 600 are symmetrically disposed.

In this embodiment, when the hydraulic cylinder 301 extends, at this time, the hydraulic cylinder joint 302 drives the cross block 502 to drive the two connecting rods 503, the two second swing rods, the first swing rod, and the synchronous driving pull rod 505 to pull the first clamping door 201 and the second clamping door 202 to open simultaneously; conversely, when the hydraulic cylinder 301 contracts, the first clamping door 201 and the second clamping door 202 are closed at the same time; the first clamping door 201 and the second clamping door 202 are identical in structure and are symmetrically arranged, so that the gravity center deviation is small when the first clamping door 201 and the second clamping door 202 are opened or closed, and the clamping device is safer and more reliable.

In the preferred embodiment of the present invention, a second locking mechanism 800 is also included; the first clamping door 201 is provided with a first complementary core 211 at the inlet end of the clamping channel 700, the second clamping door 202 is provided with a second complementary core 212 at the inlet end of the clamping channel 700, the elevator main body 100 is provided with a third complementary core 102 at the inlet end of the clamping channel 700, and the first complementary core 211, the second complementary core 212 and the third complementary core 102 are sequentially connected to form a circular ring structure for clamping a tubular column; one side that first centre gripping door 201 is close to second centre gripping door 202 is provided with the notch, and second centre gripping door 202 corresponds and is provided with the protruding keyhole 222 that is used for notch complex, second locking mechanism 800 sets up in first centre gripping door 201, second locking mechanism 800 corresponds the setting with the notch, second locking mechanism 800 is connected with the transmission of first benefit core 211, first benefit core 211 is used for receiving the dead weight pressure of tubular column, in order to drive second locking mechanism 800 and insert the protruding keyhole 222 of locating in the notch along vertical direction.

In this embodiment, because the clamping channel 700 needs to clamp the tubular column, in order to ensure the reliability in the clamping process, the first complementary core 211, the second complementary core 212, and the third complementary core 102 are sequentially connected to form an annular structure for clamping the tubular column, and at this time, the first complementary core 211, the second complementary core 212, and the third complementary core 102 can apply a more stable clamping force to the tubular column.

In the preferred embodiment of the present invention, the second locking mechanism 800 includes a second pin 801 and a second spring 802; a stepped hole 221 is formed in the first clamping door 201 above the notch, a second pin shaft 801 is inserted into the stepped hole 221, the second pin shaft 801 abuts against the first complementary core 211, and the first complementary core 211 is used for driving the second pin shaft 801 to move in the stepped hole 221; the second spring 802 is sleeved outside the second pin shaft 801, two ends of the second spring 802 are respectively abutted against the second pin shaft 801 and the step of the stepped hole 221, and the second spring 802 has an elastic tendency of making the second pin shaft 801 away from the notch.

Optionally, the second locking mechanism 800 may further include a locking nut, the locking nut is connected to one end of the stepped hole 221 near the first complementary core 211, the second pin 801 can extend out of the locking nut, and the second pin 801 has a protrusion capable of abutting against the locking nut, so that the second pin 801 is limited in the stepped hole 221 by the locking nut.

In this embodiment, because the pipe column has a self weight, the pipe column applies a downward acting force to the first complementary core 211, the second complementary core 212, and the third complementary core 102, and the movement of the first complementary core 211 in the vertical direction can drive the second pin shaft 801 to move in the vertical direction.

Optionally, the second spring 802 may be an extension spring, and without the action of the pipe column, the second pin 801 pops out under the action of the second spring 802, and jacks up the first complementary core 211, when the pipe column enters the clamping channel 700, the second clamping door 202 and the first clamping door 201 are already closed, and the protruding keyhole 222 of the second clamping door 202 extends into the notch of the first clamping door 201, when the hoisting mechanism of the pipe column is removed, the pipe column will press the first complementary core 211 under the action of the self weight, and the first complementary core 211 can further overcome the acting force of the second spring 802, so that the second pin 801 is inserted into the protruding keyhole 222, and the mechanical locking between the first clamping door 201 and the second clamping door 202 is completed.

In the preferred embodiment of the present invention, the device further comprises a detection mechanism 900; the detection mechanism 900 is disposed on the elevator main body 100, the detection mechanism 900 is in electrical signal connection with the driving mechanism 300, and the detection mechanism 900 is located at the end of the clamping channel 700 and is used for detecting a signal when a pipe column enters the elevator main body 100 and transmitting the signal to the driving mechanism 300 to control the opening and closing of the driving mechanism 300.

Alternatively, the detection mechanism 900 may employ a rod sensor, and when a signal of a pipe string entering the elevator main body 100 is detected by the detection mechanism 900, the driving mechanism 300 is opened under the action of a control valve to clamp the pipe string by forming the clamping passage 700 through the first clamping door 201, the second clamping door 202 and the elevator main body 100.

In this embodiment, when the pipe column enters the elevator main body 100, the detection mechanism 900 is triggered, and the clamping mechanism 200 can be closed at this time; further, when pipe connection needs to be carried out, the power elevator firstly reaches a pipe connection position, a rotation angle and a pipe column are in a horizontal state under the action of the turnover mechanism, and the first clamping door 201 and the second clamping door 202 are opened under the action of the driving mechanism 300; after the pipe column enters the elevator main body 100, the detection mechanism 900 is activated, the driving mechanism 300 pushes the transmission mechanism 500 to close the first clamping door 201 and the second clamping door 202, the first locking mechanism 600 is driven by the guide mechanism 400 to be inserted into the locking hole 511 of the first swinging plate 501, the first clamping door 201 and the second clamping door 202 are locked, and the first clamping door 201 and the second clamping door 202 can be prevented from being opened when hydraulic pressure fails through the first locking mechanism 600; at the moment, the turnover mechanism is in a follow-up state, the power elevator lifts and automatically returns, the lower end face of the coupling is in contact with the elevator main body 100, when the weight of the pipe column is completely pressed on a circular ring structure formed by the first complementary core 211, the second complementary core 212 and the third complementary core 102, the second locking mechanism 800 completes locking when the pipe column is loaded, misoperation when the pipe column is loaded can be prevented through the second locking mechanism 800, and the action of connecting the pipe is completed. When the pipe column needs to be sent, when the power elevator drives the pipe column to reach a pipe sending position, the lower end face of the coupling is separated from the upper end face of the power elevator, the load of the pipe column is removed, the first compensation core 211 rebounds under the action of the second spring 802, and meanwhile the second pin shaft 801 pops out of the protruding lock hole 222; at this time, the piston rod of the driving mechanism 300 extends out, the first locking mechanism 600 exits the locking hole 511 of the first swing plate 501 under the driving of the guiding mechanism 400, and then the transmission mechanism 500 is pushed to open the first holding door 201 and the second holding door 202, so that the pipe column moves out, and the pipe conveying action is completed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.