CN-121976760-A - Automatic elevator is driven to electricity

CN121976760ACN 121976760 ACN121976760 ACN 121976760ACN-121976760-A

Abstract

The invention discloses an electric drive automatic elevator, which relates to the technical field of oil drilling and mining mechanical equipment, wherein all movements of the electric drive automatic elevator are driven by an electric cylinder, the control is integrated in an automatic PLC electric control system, a proximity switch feeds back signal, a control system issues an instruction, a turnover electric cylinder is controlled to drive the elevator to rotate and position, a door locking electric cylinder and a valve electric cylinder open a locking door to clamp a pipe column with the valve, the pipe column enters a bayonet impact detection locking block, the control system sends the instruction to the door locking electric cylinder and the valve electric cylinder, the pipe column is lifted and lowered after the locking door and the valve are pulled by a pull rod, and the turnover electric cylinder is controlled to drive the elevator to rotate to an initial position after the operation is completed, so that the next operation cycle is waited. The invention adopts the servo electric cylinder and is matched with the proximity switch, thereby realizing the accurate clamping of the pipe column and remarkably improving the safety, efficiency and intellectualization level of the workover rig operation.

Inventors

ZHENG SHAN
CHEN ZHAOLI
ZHANG XIYANG
WANG HONGBO
Hua Shunan
ZHAO YIFAN
WANG XINGHE

Assignees

南阳二机石油装备集团股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251203

Claims (6)

1. The electric drive automatic elevator is applied to the technical field of petroleum well repair equipment and is used for clamping and conveying a pipe column, and is characterized in that the elevator is of an all-electric drive structure and comprises an elevator main body, a right valve, a left valve, a valve pin shaft, a valve rotating arm, a valve pull rod, a door locking rotating pin, a door locking rotating arm, a door locking rear pull rod, a door locking front pull rod rotating sleeve, a door locking front pull rod, a turnover device body, a turnover electric cylinder, a connecting block, a lock ring, a connecting nut, a door locking electric cylinder, a valve electric cylinder and the like, and the pull rod is driven by the electric cylinder to control the door locking, the valve opening, the closing and the elevator overturning.
2. The electrically driven automatic elevator according to claim 1, wherein the elevator body is of a U-shaped frame structure, semicircular clamping grooves are formed in the inner side of the elevator body, valve rotating pin holes and turnover arm mounting shaft holes are symmetrically formed in two side walls of the elevator body, a core supplementing lining mounting groove is formed in the bottom of the elevator body, and positioning key grooves are formed in the grooves and used for positioning and fixing the core supplementing lining.
3. The electrically driven automatic elevator according to claim 1, wherein the left and right valves are matched with the U-shaped groove of the elevator main body to cooperatively form a complete clamping space, so that the pipe column is held tightly and released; the right valve and the left valve are hinged to two sides of the main body frame through valve pin shafts, piston rods at two ends of an electric cylinder of the valve are connected with the valve through valve rotating arms and valve pull rods to drive the valve to open and close, the valve rotating arms and the valve pull rods are connected through pin shafts, the core supplementing bush is fixed to the main body of the elevator and the valve through positioning pins and bolts, positioning bosses are arranged at positions, corresponding to the core supplementing lining, on the inner side of the valve, to ensure synchronous action with the valve after the core supplementing lining is assembled.
4. The electrically driven automatic elevator according to claim 1, wherein the door is hinged to the right door through a door locking pin, the door is provided with a mechanical lock pin, the door locking front pull rod and the door locking rear pull rod are connected by a door locking front pull rod rotating sleeve, and the door locking electric cylinder is connected with the door locking rear pull rod through a door locking rotating arm.
5. The electric drive automatic elevator according to claim 1, wherein the overturning device body is connected with the elevator locking arm through a connecting block, when the electric drive type elevator overturning device is in operation, the overturning electric cylinder stretches and contracts to drive the connecting block to rotate, so that the elevator body is driven to rotate by 0 degrees to +90 degrees, and the overturning device can be quickly detached from the hanging ring through a locking ring pin shaft.
6. The electric drive automatic elevator according to claim 1, wherein the overturning electric cylinder is arranged on an elevator overturning arm body and drives the elevator to rotate by 90 degrees (from vertical to horizontal or vice versa) so as to facilitate grabbing and placing a pipe column, the valve electric cylinder, the door locking electric cylinder and the valve electric cylinder are fixed on the side wall of the elevator main body through mounting seats, and two ends of the valve electric cylinder, the door locking electric cylinder and the valve electric cylinder are connected with the mounting seats of the rotating arm and drive the valve and the door locking to open and close through a valve pull rod, a door locking front pull rod and a door locking rear pull rod.

Description

Automatic elevator is driven to electricity Technical Field The invention relates to the technical field of petroleum well repair equipment, in particular to an automatic elevator device based on electric cylinder driving. Background In the prior art, the workover rig elevator is generally hydraulically driven, however, a hydraulic system is easy to leak, the operation environment is polluted, the maintenance cost is high, the response speed of a hydraulic cylinder is greatly influenced by oil temperature and oil pressure, the control precision is low, a hydraulic pipeline is complex, the installation space is large, potential safety hazards exist, the hydraulic power unit needs to be additionally configured, and the complexity of equipment is increased. Therefore, a new elevator driving scheme that is simple in structure, quick in response, adaptive and pollution-free is needed. Disclosure of Invention The invention aims to provide an elevator driven by a workover rig motor, which realizes automatic clamping and overturning of a pipe column through driving of an overturning electric cylinder, a valve electric cylinder and a door locking electric cylinder, and meets the requirements of automation, digitization and intellectualization of modern petroleum workover operations. The elevator driven by the electric cylinder comprises an elevator main body, a valve, a door locking device, a turnover device, a driving system and the like. As the preference of above-mentioned scheme, the elevator main part is U type frame structure, and the inboard is semicircle centre gripping groove, and main part both sides wall symmetry processing has valve pivot hole and upset arm installation shaft hole, and the main part bottom is equipped with the mending inside lining mounting groove, and processing has the location keyway in the inslot to be used for the location and the fixed of mending the core inside lining. As the optimization of above-mentioned scheme, control valve and elevator main part U type groove cooperation form complete centre gripping space in coordination, realize that the tubular column is held tightly and is released. The right valve and the left valve are hinged to two sides of the main body frame through valve pin shafts, piston rods at two ends of the valve electric cylinder are connected with the valves through valve rotating arms and valve pull rods, the valves are driven to open and close, and the valve rotating arms are connected with the valve pull rods through pin shafts. The bushing is secured to the elevator body and the valve by a dowel pin and a bolt. And a positioning boss is arranged at the corresponding position of the inner side of the valve and the core-supplementing lining, so that the core-supplementing lining and the valve can synchronously act after being assembled. As the optimization of above-mentioned scheme, on the door lock passes through the door lock round pin hinge and right valve, the door lock is equipped with mechanical lockpin, and the door lock front pull rod is connected with the door lock rear pull rod through the door lock front pull rod cover that changes in the middle to the door lock jar passes through door lock rocking arm and door lock rear pull rod connection. As the preferable of the scheme, the turnover arm device is composed of a turnover device body, a connecting nut, a lock ring, a connecting block, a turnover electric cylinder and the like. The turnover device body is connected with the elevator locking arm through a connecting block. During operation, the overturning electric cylinder stretches out and draws back to drive the rotation of the connecting block, so that the rotation of the elevator body is driven, and the rotation of 0 degrees to +90 degrees is realized. The turnover device uses the locking ring pin shaft, so that the hydraulic elevator can be quickly disassembled from the hanging ring. The driving system is composed of a turnover electric cylinder, a door locking electric cylinder and a valve electric cylinder, wherein the turnover electric cylinder is arranged on an elevator turnover arm body and drives the elevator to rotate by 90 degrees (from vertical to horizontal or vice versa) so as to facilitate grabbing and placing of a pipe column, the valve electric cylinder, the door locking electric cylinder and the valve electric cylinder are fixed on the side wall of the elevator main body through mounting seats, two ends of the valve electric cylinder, the door locking electric cylinder and the valve electric cylinder are connected with the mounting seats of the rotating arm and the rotating arm, and the valve and the door locking are driven to open and close through a valve pull rod, a door locking front pull rod and a door locking rear pull rod. The invention has the advantages and technical effects that: 1. the hydraulic system is thoroughly canceled by driving the full electric cylinder, the oil leakage risk is eliminated, the structure i