CN111594070B - Power elevator - Google Patents

Abstract

The invention provides a power elevator, which relates to the technical field of oilfield workover equipment and comprises an elevator main body, a clamping mechanism, a driving mechanism, a guiding mechanism, a transmission mechanism and a first locking mechanism; a clamping channel for clamping the tubular 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 plane 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 closed state of the clamping channel, so that the reliability of clamping the pipe column by the clamping mechanism and the elevator main body is ensured; the same driving mechanism can control the opening and closing and locking actions of the clamping channel, and the technical problems of complex structure of the lock tongue and the valve, large left and right gravity center deviation, low efficiency and high manufacturing and maintaining cost in the prior art are solved.

Description

Power elevator

Technical Field

The invention relates to the technical field of oilfield workover equipment, in particular to a power elevator.

Background

The elevator is an important device for lifting and lowering an oil pipe in well repairing operation, the performance of the elevator directly influences the efficiency and the safety of well repairing operation, and along with urgent demands of an oil field on reducing the labor intensity of operators, improving the operation safety and improving the working efficiency, the demands on the power elevator of an operation automation matched tool in the market are increasing at present.

The power elevator in the prior art generally adopts a side-opening type hydraulic overturning elevator, and drives the valve and the lock tongue to be opened and closed respectively through adopting two hydraulic cylinders, so that the opening and closing actions of the elevator are realized.

However, the power elevator in the prior art has the following defects: (1) The spring bolt and the valve have different structures, complex shapes and larger left and right gravity center deviation when being opened or closed; (2) In the prior art, a hydraulic cylinder is controlled by a sequence valve, and when the power elevator is opened and closed, a lock tongue and a valve are sequentially opened, so that the time is longer, and the efficiency is lower; (3) Two hydraulic cylinders and a sequence valve are adopted for control, the structure is complex, and the manufacturing and maintenance cost is high; (4) The lever structure is adopted to drive the bolt structure to lock the valve and the lock tongue, the structure is complex, and the processing difficulty is high.

Disclosure of Invention

The invention aims to provide a power elevator to solve 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.

The invention provides a power elevator, which comprises: the elevator comprises an elevator main body, a clamping mechanism, a driving mechanism, a guiding 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 tubular 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 surface is arranged on the guide mechanism, one end of the first locking mechanism is in butt joint with the inclined surface, 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 change 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 as to fix the transmission mechanism;

And 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 contacted 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;

the support frame is provided with a through hole, the first locking mechanism is inserted in the through hole, the support frame is further provided with a sliding channel, the guiding mechanism is slidably arranged in the sliding channel, one side of the guiding mechanism, which is located on the sliding channel, is in transmission connection with the driving mechanism, the inclined surface is located on the other side surface of the guiding mechanism, and the driving mechanism is used for driving the guiding mechanism to reciprocate along the sliding channel so as to adjust the first locking mechanism to reciprocate vertically through the through hole through the inclined surface.

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 is covered on the through hole and is connected with the supporting 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 of the first pin shaft, which is far away from the first spring, extends out of the fixed sleeve and is inserted into the through hole, and the first spring has an elastic trend that the first pin shaft is far away from the bottom wall of the fixed sleeve;

the rolling bearing component is fixedly connected with the side wall of the first pin shaft, and is vertically arranged with the first pin shaft, and the rolling bearing component 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 swing plate, the first swing plate is in transmission connection with the driving mechanism, and the driving mechanism can drive the first swing 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 fixed in a plugging manner.

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 of the telescopic rod is connected with the hydraulic cylinder connector, a strip hole is formed in the hydraulic cylinder connector, the hydraulic cylinder connector is connected with the transmission mechanism through the strip hole, the transmission mechanism can move relative to the strip hole, and when the telescopic rod drives the guide mechanism to move, the transmission mechanism has a section of no-load section relative to the hydraulic cylinder connector.

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

The horizontal piece pass through the round pin axle with the rectangular hole sliding connection that the pneumatic cylinder connects, horizontal piece pass through the connecting rod with the transmission of second swing board is connected, the second swing board with first swing board transmission is connected, first swing board passes through the pull rod with fixture transmission is connected, first swing board can drive through the swing fixture rotates for the elevator body.

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 swinging plate, the first swinging plate and the pull rod form a transmission assembly, the transmission assembly is provided with two groups, the two groups of transmission assemblies are arranged in mirror symmetry relative to the central line of the transverse block, one group of transmission assemblies are in transmission connection with the first clamping door, and the other group of transmission assemblies are in transmission connection with the second clamping door, 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 present invention, the locking device further comprises a second locking mechanism;

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

The first clamping door is close to one side of the second clamping door and is provided with a notch, the second clamping door is correspondingly provided with a convex buttonhole used for matching the notch, the second locking mechanism is arranged in the first clamping door and is correspondingly arranged with the notch, the second locking mechanism is in transmission connection with the first core supplementing, and the first core supplementing is used for receiving the dead weight pressure of a pipe column so as to drive the second locking mechanism to be inserted into the convex buttonhole in the notch along the vertical direction.

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

The first clamping door is positioned above the notch and is provided with a stepped hole, the second pin shaft is inserted into the stepped hole, the second pin shaft is in butt joint with the first compensation core, and the first compensation 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 to the second pin shaft and the step of the stepped hole, and the second spring has an elastic trend that the second pin shaft is far away from the notch.

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

the detection mechanism is arranged on the elevator main body, is in electrical signal connection with the driving mechanism, is positioned at the end part of the clamping channel and is used for detecting a signal of the pipe column entering the elevator main body and conveying 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 guiding 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 tubular 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; further, the output end of the driving mechanism is connected with the guiding mechanism, an inclined surface is arranged on the guiding mechanism, one end of the first locking mechanism is abutted against the inclined surface, a locking hole is arranged on the transmission mechanism, and the driving mechanism adjusts the posture of the first locking mechanism through the guiding mechanism so that the first locking mechanism can 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 contacted 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 is utilized to drive the transmission mechanism to move, so that the guide mechanism can be driven to move in the horizontal direction, and meanwhile, the inclined surface of the guide mechanism is utilized to adjust the movement of the first locking mechanism relative to the vertical direction, so that the first locking mechanism can be utilized to lock the closed state of the clamping channel, and the reliability of clamping the pipe column by the clamping mechanism and the elevator main body is ensured; moreover, the same driving mechanism is utilized to control 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 the lock tongue and the valve, large left and right gravity center deviation, low efficiency and high manufacturing and maintaining 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 that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

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

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

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

FIG. 4 is a schematic view of a cross-sectional structure of the power elevator of FIG. 3 in the A-A direction;

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

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

FIG. 7 is an enlarged partial schematic view of a second pretensioning mechanism of the power elevator of the embodiment of FIG. 6.

Icon: 100-an elevator body; 101-supporting frames; 111-sliding channels; 102-a third core supplementing; 200-clamping mechanisms; 201-a first clamping door; 211-a first core supplement; 221-a stepped hole; 202-a second clamping door; 212-second core supplementing; 222-raised keyhole; 300-a driving mechanism; 301-a hydraulic cylinder; 302-hydraulic cylinder joint; 312-elongated holes; 400-guiding mechanism; 401-inclined plane; 500-transmission mechanism; 501-a first swinging plate; 511-locking holes; 502-horizontal blocks; 503-connecting rod; 504-a second wobble plate; 505-tie rod; 600-a first locking mechanism; 601-a first pin; 602—a first spring; 603-fixing the sleeve; 604-rolling bearing composition; 700-clamping 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 clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 7, the power elevator provided in this embodiment includes: the elevator comprises an elevator main body 100, a clamping mechanism 200, a driving mechanism 300, a guiding mechanism 400, a transmission mechanism 500 and a first locking mechanism 600; the clamping mechanism 200 is connected with the elevator main body 100, and a clamping channel 700 for clamping the tubular column is formed between the clamping mechanism 200 and the elevator main body 100; the driving mechanism 300 is in transmission connection with the clamping mechanism 200 through a 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 guiding mechanism 400, the guiding 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 guiding mechanism 400 so as to enable the first locking mechanism 600 to be changed between a first state and a second state; in the first state of the first locking mechanism 600, the driving mechanism 300 drives the guide 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 guide 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; in the second state of the first locking mechanism 600, the driving mechanism 300 drives the guide 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 guide mechanism 400, and the other end of the first locking mechanism 600 is separated from the locking hole 511 of the driving mechanism 500.

It should be noted that, the power elevator provided in this embodiment is a structure for suspending a pipe string in an oilfield automatic workover operation, and the clamping mechanism 200 is capable of performing a relative motion with respect to the elevator main body 100, so that a clamping channel 700 for suspending an oil pipe is formed between the clamping mechanism 200 and the elevator main body 100; in this embodiment, the movement of the clamping mechanism 200 relative to the elevator body 100 is a rotation relative to the elevator body 100, so that the suspended oil pipe formed between the clamping mechanism 200 and the elevator body 100 is opened or closed.

In this embodiment, when the power elevator is required to clamp and suspend the pipe column, the power elevator is moved to the position where the pipe column is located, 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 clamp and fix the pipe column through the clamping channel 700; the driving mechanism 300 may adopt a hydraulic cylinder 301 or an air cylinder, and one hydraulic cylinder 301 or air cylinder is used for driving the clamping mechanism 200 to move; because one driving mechanism 300 is adopted as a power source, a plurality of hydraulic cylinders and control of sequential valves in the prior art do not exist, so that the running efficiency of the elevator can be improved, the problem that the elevator in the prior art adopts a sequential valve opening or closing mode is avoided, and the efficiency is expected to be improved by 1 time; further, since only one driving mechanism 300 omits the 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 synchronously driven to move in the horizontal direction, and during the movement of the guiding mechanism 400, the inclined plane 401 is driven to move, and because the first locking mechanism 600 is abutted with the inclined plane 401, when the first locking mechanism 600 is at different positions of the inclined plane 401, the first locking mechanism 600 is different in the vertical direction, in other words, the driving mechanism 300 can also 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 to move by using the driving mechanism 500, when the driving mechanism 300 drives the clamping mechanism 200 to just complete the closing of the clamping channel 700, the locking hole 511 on the driving mechanism 500 moves to be right below the vertical direction of the first locking mechanism 600, and at the moment, the first locking mechanism 600 contacts with the lowest point of the inclined plane 401 of the guiding mechanism 400, so that one end of the first locking mechanism 600, which is close to the locking hole 511, is just inserted into the locking hole 511, and the locking and fixing of the clamping channel 700 is completed 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, the driving mechanism 300 will drive the guiding mechanism 400 to move at this time, the inclined surface 401 of the guiding mechanism 400 will gradually drive the first locking mechanism 600 to rise until the first locking mechanism is separated from the locking hole 511, the driving mechanism 500 is in an active state at this time, and the driving mechanism 300 can drive the clamping mechanism 200 to rotate relative to the elevator main body 100 by using the driving 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 a locked state; the driving mechanism 300 may adopt a hydraulic cylinder 301 or a pneumatic cylinder, so that the extending end of the hydraulic cylinder 301 or the pneumatic cylinder may be in a contracted state, and the first direction is the contracting direction of the hydraulic cylinder 301 or the pneumatic cylinder; conversely, 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 a pneumatic cylinder, so that the extending end of the hydraulic cylinder 301 or the pneumatic cylinder may be in a contracted state, and the second direction is the extending direction of the hydraulic cylinder 301 or the pneumatic cylinder; the first direction may be a direction in which the hydraulic cylinder 301 or the cylinder extends, and the second direction may be a direction in which the hydraulic cylinder 301 or the cylinder contracts, and the inclination direction of the inclined surface 401 may be changed, which will not be described here.

The power elevator that this embodiment provided includes: the elevator comprises an elevator main body 100, a clamping mechanism 200, a driving mechanism 300, a guiding mechanism 400, a transmission mechanism 500 and a first locking mechanism 600; the clamping mechanism 200 is connected with the elevator main body 100, and a clamping channel 700 for clamping the tubular column is formed between the clamping mechanism 200 and the elevator main body 100; the driving mechanism 300 is in transmission connection with the clamping mechanism 200 through a 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 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 guiding mechanism 400 so as to enable the first locking mechanism 600 to be changed between a first state and a second state; in the first state of the first locking mechanism 600, the driving mechanism 300 drives the guide 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 guide 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; in the second state of the first locking mechanism 600, the driving mechanism 300 drives the guide 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 guide 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, the driving mechanism 300 is utilized to drive the transmission mechanism 500 to move, so as to drive the guide mechanism 400 to move in the horizontal direction, and the inclined surface 401 of the guide mechanism 400 is utilized to adjust the movement of the first locking mechanism 600 relative to the vertical direction, so that the first locking mechanism 600 can be utilized to lock the closed state of the clamping channel 700, thereby ensuring the reliability of the clamping mechanism 200 and the elevator main body 100 to the pipe column; and the same driving mechanism 300 is utilized to control 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 structure of the lock tongue and the valve, large left-right gravity center deviation, low efficiency and high manufacturing and maintaining cost in the prior art are solved.

Further to the above embodiments, in a preferred embodiment of the present invention, the elevator body 100 includes a support frame 101; the support frame 101 is provided with a through hole, the first locking mechanism 600 is inserted in the through hole, the support frame 101 is also 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 positioned in the sliding channel 111, is in transmission connection with the driving mechanism 300, the inclined surface 401 is positioned 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 first locking mechanism 600 to reciprocate vertically in the through hole through the inclined surface 401.

In the present embodiment, in order to define 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 coincides with the extending direction of the hydraulic cylinder 301 or the extending direction of the cylinder; meanwhile, by arranging a through hole at one side of the sliding channel 111, the first locking mechanism 600 is inserted into the through hole, wherein one side of the first locking mechanism 600, which contacts the inclined surface 401, and the transmission mechanism 500 are positioned at two sides of the plane of the supporting frame 101, when the first locking mechanism 600 contacts different positions of the inclined surface 401, the first locking mechanism 600 can move in a vertical downward direction under the action of dead weight; or other driving mechanisms 300 may be provided to drive the first locking mechanism 600 to move in a vertically 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 fixed sleeve 603 covers the through hole, and the fixed sleeve 603 is connected with the supporting frame 101; the first pin shaft 601 and the first spring 602 are positioned in the fixed sleeve 603, two ends of the first spring 602 are respectively abutted against the bottom wall of the fixed 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 fixed sleeve 603 and is inserted into the through hole, and the first spring 602 has an elastic trend that the first pin shaft 601 is far away from the bottom wall of the fixed sleeve 603; the rolling bearing component 604 is fixedly connected with the side wall of the first pin shaft 601, the rolling bearing component 604 is perpendicular to the first pin shaft 601, and the rolling bearing component 604 is abutted to the inclined surface 401 of the guide mechanism 400 and used for rolling along the inclined surface 401 so as to adjust the extension or retraction of the first pin shaft 601 in the vertical direction.

In this embodiment, the fixing sleeve 603 is covered on the through hole, and the outer part of the fixing sleeve 603 can be connected with the surface of the supporting frame 101 through bolts; and the opening of fixed sleeve 603 is towards the through-hole, utilize first spring 602 and first round pin axle 601 all to set up in fixed sleeve 603, be provided with the arch on the lateral wall of first round pin axle 601 simultaneously, utilize to overlap on the arch and be equipped with antifriction bearing and constitute 604, wherein first round pin axle 601 can utilize protruding and antifriction bearing to constitute 604 and the inclined plane 401 butt of guiding mechanism 400, antifriction bearing constitutes 604 can be more convenient for with the reciprocating motion of inclined plane 401, and then can adjust the position of first round pin axle 601 in vertical direction through inclined plane 401, wherein first spring 602 can adopt compression spring, and first spring 602 still has elastic potential energy when first round pin axle 601 and inclined plane 401 minimum position contact, thereby first spring 602 can always apply decurrent effort to first round pin axle 601, utilize the reliability of first round pin axle 601 and locking hole 511 joint of the assurance that elasticity of first spring 602 can be better.

In a preferred embodiment of the present invention, the transmission mechanism 500 includes a first swing plate 501; the locking hole 511 is positioned 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 and fixed with the locking hole 511.

The first swinging plate 501 has a plane, when the first swinging plate 501 rotates, the plane of the first swinging plate 501 moves back and forth in a horizontal direction, and when the first swinging plate 501 drives the clamping mechanism 200 and the elevator main body 100 to form a clamping channel 700, a locking hole 511 on the first swinging plate 501 is located right below the first pin shaft 601, so that the first pin shaft 601 can be spliced with the locking hole 511; in other words, when the first swing plate 501 is not moved to the position, even when the first pin 601 moves 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 drive 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 reciprocate along the sliding channel 111; the end of the telescopic rod is connected with the hydraulic cylinder connector 302, the hydraulic cylinder connector 302 is provided with a strip hole 312, the hydraulic cylinder connector 302 is connected with the transmission mechanism 500 through the strip hole 312, and the transmission mechanism 500 can move relative to the strip 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 connector 302.

In this embodiment, the hydraulic cylinder 301 can implement a reciprocating motion in one direction, the telescopic rod of the hydraulic cylinder 301 is connected with the guide mechanism 400, where the guide mechanism 400 can move synchronously with the motion of the telescopic rod, but the transmission mechanism 500 is connected with the telescopic rod of the hydraulic cylinder 301 through the hydraulic cylinder joint 302, and because the long hole 312 is provided on the hydraulic cylinder joint 302, when the moving direction of the telescopic rod of the hydraulic cylinder 301 is opposite to the contact surface of the transmission mechanism 500 and the long hole 312, the motion of the hydraulic cylinder 301 only drives the guide mechanism 400 to operate, and the transmission mechanism 500 can stay in the original position for the length of the long hole 312 due to the existence of the idle section, so that the hydraulic cylinder 301 can drive the position of the first pin 601 first swing plate 501 in advance without interference of the first pin 601.

Specifically, the length of the elongated hole 312 may be 15mm, and the transmission mechanism 500 may be abutted with two 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 elongated hole 312, and 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 plane 401; at this time, the hydraulic cylinder joint 302 also moves along with the telescopic rod, but the transmission mechanism 500 is in a stop state due to the existence of the long strip hole 312, until the hydraulic cylinder 301 drives the hydraulic cylinder joint 302 to move by 15mm, the transmission mechanism 500 acts 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 swing plate 501 do not interfere; conversely, 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, and 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 plane 401; at this time, the hydraulic cylinder joint 302 also moves along with the telescopic rod, but the transmission mechanism 500 is in a stop state due to the existence of the long strip hole 312, until the hydraulic cylinder 301 drives the hydraulic cylinder joint 302 to move by 15mm, the transmission mechanism 500 acts under the action of the hydraulic cylinder joint 302, the first swinging plate 501 drives the locking hole 511 to move to the position of the first pin shaft 601 after finally moving in place, and at this time, the first pin shaft 601 is fixedly spliced with the locking hole 511, so that the locking action is completed.

In the preferred embodiment of the present invention, the transmission 500 further includes a transverse block 502, a link 503, a second swing plate 504, and a pull rod 505; the transverse block 502 is in sliding connection with the strip hole 312 of the hydraulic cylinder joint 302 through a pin shaft, the transverse block 502 is in transmission connection with the second swinging plate 504 through a connecting rod 503, the second swinging plate 504 is in transmission connection with the first swinging plate 501, the first swinging plate 501 is in transmission connection with the clamping mechanism 200 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 clamping mechanism 200 includes a first clamping door 201 and a second clamping door 202; the connecting rod 503, the second swinging plate 504, the first swinging plate 501 and the pull rod 505 form a transmission assembly, the transmission assembly is provided with two groups, the two groups of transmission assemblies are arranged in mirror symmetry relative to the central line of the transverse block 502, one group of transmission assemblies is in transmission connection with the first clamping door 201, and the other group of transmission assemblies is 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, two groups of first locking mechanisms 600 may be provided, two groups of first locking mechanisms 600 are disposed corresponding to two groups of first swinging rods, and the two groups of first locking mechanisms 600 are symmetrically disposed.

In this embodiment, when the hydraulic cylinder 301 extends, the hydraulic cylinder joint 302 drives the transverse block 502 to drive the two connecting rods 503, the two second swinging rods, the first swinging rods 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 clamp door 201 and the second clamp door 202 are simultaneously closed; the first clamping door 201 and the second clamping door 202 have the same 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 safety and the reliability are improved.

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 core supplement 211 at the inlet end of the clamping channel 700, the second clamping door 202 is provided with a second core supplement 212 at the inlet end of the clamping channel 700, the elevator main body 100 is provided with a third core supplement 102 at the inlet end of the clamping channel 700, and the first core supplement 211, the second core supplement 212 and the third core supplement 102 are sequentially connected to form a circular ring structure for clamping a pipe column; the first clamping door 201 is close to one side of the second clamping door 202 and is provided with the notch, and the second clamping door 202 corresponds to be provided with the protruding keyhole 222 that is used for notch complex, and second locking mechanism 800 sets up in the first clamping door 201, and second locking mechanism 800 corresponds the setting with the notch, and second locking mechanism 800 is connected with first mending core 211 transmission, and first mending core 211 is used for receiving the dead weight pressure of tubular column to drive second locking mechanism 800 along vertical direction inserting in the protruding keyhole 222 in the notch.

In this embodiment, since the clamping channel 700 needs to clamp the pipe column, in order to ensure reliability in the clamping process, the first core-compensating device 211, the second core-compensating device 212 and the third core-compensating device 102 are sequentially connected to form a circular ring structure for clamping the pipe column, and at this time, the first core-compensating device 211, the second core-compensating device 212 and the third core-compensating device 102 can apply a more stable clamping force to the pipe column.

In the preferred embodiment of the present invention, the second locking mechanism 800 includes a second pin 801 and a second spring 802; the first clamping door 201 is provided with a stepped hole 221 above the notch, the second pin shaft 801 is inserted into the stepped hole 221, the second pin shaft 801 is abutted with the first compensating core 211, and the first compensating 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 801, and two ends of the second spring 802 are respectively abutted against steps of the second pin 801 and the stepped hole 221, and the second spring 802 has an elastic trend that the second pin 801 is far away from the notch.

Optionally, the second locking mechanism 800 may further include a locking nut, where the locking nut is connected to an end of the stepped hole 221 near the first complementary core 211, the second pin 801 may extend out of the locking nut, and the second pin 801 may have a protrusion capable of abutting against the locking nut, so as to define the second pin 801 in the stepped hole 221 through the locking nut.

In this embodiment, since the pipe column has a dead weight, the pipe column applies downward force to the first core compensating device 211, the second core compensating device 212 and the third core compensating device 102, and the second pin 801 can be driven to move in the vertical direction by using the movement of the first core compensating device 211 in the vertical direction.

Optionally, the second spring 802 may be a telescopic spring, under the action of no pipe column, the second pin shaft 801 pops up under the action of the second spring 802 and jacks up the first core supplement 211, when a pipe column enters the clamping channel 700, the second clamping door 202 and the first clamping door 201 are closed at this time, the protruding keyhole 222 of the second clamping door 202 stretches into the notch of the first clamping door 201, when the hoisting mechanism of the pipe column is removed, the pipe column presses the first core supplement 211 like down under the action of dead weight at this time, and the first core supplement 211 can overcome the acting force of the second spring 802, so that the second pin shaft 801 is inserted into the protruding keyhole 222, and mechanical locking between the first clamping door 201 and the second clamping door 202 is completed.

In a preferred embodiment of the present invention, the present invention further comprises a detection mechanism 900; the detection mechanism 900 is disposed on the elevator body 100, the detection mechanism 900 is electrically connected with the driving mechanism 300, and the detection mechanism 900 is disposed at an end of the gripping channel 700, and is used for detecting a signal of the pipe string entering the elevator 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 the detection mechanism 900 may be used to detect a signal of a pipe string entering the elevator body 100, and when a pipe string signal is detected, the driving mechanism 300 is opened under the action of the control valve, so as to form the clamping channel 700 through the first clamping door 201, the second clamping door 202, and the elevator body 100 to clamp the pipe string.

In this embodiment, when the pipe string enters the elevator body 100, the detection mechanism 900 is triggered, and the clamping mechanism 200 can be closed; further, when the pipe needs to be taken over, the power elevator reaches the pipe taking position first, the rotation angle and the 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 and activates the detection mechanism 900, 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 inserted into the locking hole 511 of the first swinging plate 501 under the drive of the guide mechanism 400, 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 failure occurs through the first locking mechanism 600; at this time, the turnover mechanism is in a follow-up state, the power elevator is lifted up and automatically returns, the lower end surface of the coupling is in contact with the elevator main body 100, when the weight of the pipe column is fully pressed on the circular ring structure formed by the first core supplement 211, the second core supplement 212 and the third core supplement 102, the second locking mechanism 800 in loading completes locking, misoperation in loading can be prevented through the second locking mechanism 800, and the taking-over action is completed. When the pipe column is required to be conveyed, the power hanging clamp drives the pipe column to reach a pipe conveying position, the lower end face of the coupling is separated from the upper end face of the power hanging clamp, at the moment, the load of the pipe column is removed, the first compensating core 211 rebounds under the action of the second spring 802, and meanwhile, the second pin shaft 801 ejects out of the protruding keyhole 222; at this time, the piston rod of the driving mechanism 300 extends, the first locking mechanism 600 is driven by the guiding mechanism 400 to withdraw from the locking hole 511 of the first swing plate 501, and then the driving mechanism 500 is pushed to open the first clamping door 201 and the second clamping door 202, so that the pipe column is removed, and the pipe feeding action is completed.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (8)

1. A power elevator, comprising: the elevator comprises an elevator main body, a clamping mechanism, a driving mechanism, a guiding 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 tubular 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 surface is arranged on the guide mechanism, one end of the first locking mechanism is in butt joint with the inclined surface, 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 change 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 as to fix the transmission mechanism;

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 a locking hole of the transmission mechanism;

The elevator main body comprises a supporting frame;

the support frame is provided with a through hole, the first locking mechanism is inserted into the through hole, the support frame is also provided with a sliding channel, the guide mechanism is slidably arranged in the sliding channel, one side of the guide mechanism, which is positioned in the sliding channel, is in transmission connection with the driving mechanism, the inclined surface is positioned on the other side surface of the guide mechanism, and the driving mechanism is used for driving the guide mechanism to reciprocate along the sliding channel so as to adjust the first locking mechanism to vertically reciprocate in the through hole through the inclined surface;

the first locking mechanism comprises a first pin shaft, a first spring, a fixed sleeve and a rolling bearing;

The fixed sleeve is covered on the through hole and is connected with the supporting 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 of the first pin shaft, which is far away from the first spring, extends out of the fixed sleeve and is inserted into the through hole, and the first spring has an elastic trend that the first pin shaft is far away from the bottom wall of the fixed sleeve;

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

The first locking mechanisms are provided with two groups, and the two groups of the first locking mechanisms are symmetrically arranged.

2. The power elevator of claim 1, wherein the transmission mechanism comprises a first swing plate;

The locking hole is positioned on the plane of the first swing plate, the first swing plate is in transmission connection with the driving mechanism, and the driving mechanism can drive the first swing 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 fixed in a plugging manner.

3. The power elevator of claim 2, 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 of the telescopic rod is connected with the hydraulic cylinder connector, a strip hole is formed in the hydraulic cylinder connector, the hydraulic cylinder connector is connected with the transmission mechanism through the strip hole, the transmission mechanism can move relative to the strip hole, and when the telescopic rod drives the guide mechanism to move, the transmission mechanism has a section of no-load section relative to the hydraulic cylinder connector.

4. The power elevator of claim 3, wherein the transmission mechanism further comprises a cross block, a link, a second swing plate, and a tie rod;

The horizontal piece pass through the round pin axle with the rectangular hole sliding connection that the pneumatic cylinder connects, horizontal piece pass through the connecting rod with the transmission of second swing board is connected, the second swing board with first swing board transmission is connected, first swing board passes through the pull rod with fixture transmission is connected, first swing board can drive through the swing fixture rotates for the elevator body.

5. The power elevator of claim 4, wherein the clamp mechanism comprises a first clamp door and a second clamp door;

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

6. The power elevator of claim 5, further comprising a second locking mechanism;

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

the first clamping door is close to one side of the second clamping door and is provided with a notch, the second clamping door is correspondingly provided with a convex buttonhole matched with the notch, the second locking mechanism is arranged in the first clamping door and is correspondingly arranged with the notch, the second locking mechanism is in transmission connection with the first core supplementing, and the first core supplementing is used for receiving the dead weight pressure of a pipe column so as to drive the second locking mechanism to be inserted in the convex buttonhole in the notch along the vertical direction.

7. The power elevator of claim 6, wherein the second locking mechanism comprises a second pin and a second spring;

The first clamping door is positioned above the notch and is provided with a stepped hole, the second pin shaft is inserted into the stepped hole, the second pin shaft is in butt joint with the first compensation core, and the first compensation 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 to the second pin shaft and the step of the stepped hole, and the second spring has an elastic trend that the second pin shaft is far away from the notch.

8. The power elevator of any of claims 1-7, further comprising a detection mechanism;

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