Novel hydraulic elevator with opening-closing signal indication function

Abstract

The invention discloses a novel hydraulic elevator with an opening-closing signal indication function. The novel hydraulic elevator comprises a left door body, a right door body, a hydraulic cylinderI and a hydraulic cylinder II; one end of the hydraulic cylinder I is connected with the right door body through a right connection rod and a first pull rod, and the other end of the hydraulic cylinder I is connected with the left door body through a left connection rod and a second pull rod; a plunger latch is connected between the left door body and the right door body and provided with a locking mechanism; and the end of a piston rod II of the hydraulic cylinder II is connected with the plunger latch through a pull head, a third pull rod and a fourth pull rod in sequence. The whole device is provided with three signal output parts, when a door body is opened, whether a door is completely opened or not can be determined, only when the door body is completely opened, a door opening hydraulic signal is emitted, and invalid operation that the elevator door is not completely opened is completely eradicated; and after the door is closed, a plunger latch closing signal and a plunger latchpin locking signal are emitted, double insurance is achieved, in addition, the signals are output in a hydraulic signal mode, an operator can be clear about the working state of the elevator, and themal-operation possibility is reduced.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling, and in particular relates to a novel hydraulic elevator with opening and closing signal indication. Background technique [0002] In the process of oil drilling, the elevator is usually used to lift the drill pipe or casing, and the elevator is remotely controlled through the driller's room. Therefore, the staff cannot immediately judge the working status of the hydraulic elevator. Once the operator makes a mistake, it will lead to an accident. happened. [0003] At present, in order to realize the signal indication of closing the door, there are also hydraulic elevators that add a proximity switch at the latch position, and then connect it to the driller's room through electric wires. Although this has realized the function of signal indication, it has the following disadvantages: 1. The switch needs electricity, which cannot achieve the real explosion-proof effect, which increases t...

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Problems solved by technology

[0002] In the process of oil drilling, the elevator is usually used to lift the drill pipe or casing, and the elevator is remotely controlled through the driller's room. Therefore, the staff cannot immediately judge the working status of the hydraulic elevator. Once the operator makes a mistake, it will lead to an accident. happened

[0003] At present, in order to realize the signal indication of closing the door, there are also hydraulic elevators that add a proximity switch at the latch position, and then connect it to the driller's room through electric wires. Although the function of signal indication has been realized in this way, there are following shortcomings: 1. The switch needs electricity, which cannot achieve the real explosion-proof effect, which increases the hidden danger of the platform; 2. The working conditions are complicated during drilling, and the proximity switch is too sensitive. Once the signal is misjudged, the operator may misoperate; 3. Crane The card is being lifted and lowered all the time, and the wires in it also need to be raised and lowered. The wires are likely to be bruised or worn, so there are potential safety hazards; 4. Adding a proximity switch to the latch can only detect the signal that the latch is closed. Other signals cannot be detected

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