Oppositely-opened type hydraulic elevator with alarm device

Abstract

The invention discloses an oppositely-opened type hydraulic elevator with an alarm device. The oppositely-opened type hydraulic elevator with the alarm device comprises a left body leaf and a right body leaf, and the left body leaf and the right body leaf are respectively combined with a sleeve barrel and are connected together through a hinge pin. The oppositely-opened type hydraulic elevator with the alarm device further comprises a plunger latch and a plunger latch guard, and the plunger latch guard and a pull latch pulling the plunger latch guard are assembled with the plunger latch together through a second plunger latch pin. The oppositely-opened type hydraulic elevator with the alarm device further comprises a hydraulic valve controlling a first hydraulic cylinder and a second hydraulic cylinder and the alarm device, the alarm device is composed of a sensor, a signal transmitter and a signal receiving alarm, the sensor is arranged on the plunger latch guard, the clearance between the sensor and the plunger latch is adjustable, the signal transmitter is arranged on the pull latch, and the signal receiving alarm receives the signals transmitted by the signal transmitter. The oppositely-opened type hydraulic elevator with the alarm device has the advantages of being safe and reliable in the using process of the elevator, and enabling operation personnel to be capable of accurately controlling the opening and closing state of the elevator in real time.

Description

technical field [0001] The invention belongs to the technical field of oil and gas drilling equipment, in particular to an elevator used for lifting during drilling operations. Background technique [0002] At present, the requirements for the load capacity of the elevators of the riser string are high, the weight of the elevators is large, and the labor intensity of the workers is high. The safety is not high, once there is a mistake, it will cause personal and equipment damage. [0003] Since there are many types of pipe strings in oil and gas drilling and workover operations, including drill pipes, drill jacks, casings, oil pipes, etc., and the specifications of various pipe strings are also particularly large, so when drilling operations, various types and types of pipe strings need to be equipped. Elevators of various specifications are also more concerned about the safety and reliability of the elevators. [0004] In the Chinese patent document CN202745740U, a hy...

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Problems solved by technology

[0007] The technical solution disclosed in the above patent document is also a previous patent application of the applicant for this patent, and its main defect is that there is no one to ensure the safety and reliability of the elevator when it is in use, and at the same time, the operator cannot accurately and constantly control the elevator. The opening and closing state of the elevator is completely observed by naked eyes, which is very dangerous to the operator himself and other workers during the actual operation of the elevator

[0008] In addition, a kind of elevator is also disclosed in Chinese patent documents CN2454524Y and CN2858928Y, but there is no disclosure of which technical solution is adopted to ensure the safety and reliability of the elevator in use

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