Ground drive unit with hydraulic pressure, speed limit, temperature control anti-reverse function

Abstract

The invention provides a ground driving device with a hydraulic, speed-limiting and temperature-control reverse rotation preventing function and relates to a screw pump ground driving device used in an oil field. The ground driving device with the hydraulic, speed-limiting and temperature-control reverse rotation preventing function is designed mainly for solving the problem that an existing screw pump driving device has potential safety hazard. The ground driving device with the hydraulic, speed-limiting and temperature-control reverse rotation preventing function comprises a reduction gearbox, a vertical shaft, a big belt wheel, a gear pump and a hydraulic oil tank. The gear pump is connected with a brake caliper through an oil pipe. A brake disc is mounted at the top of the vertical shaft. An upper friction block and a lower friction block are mounted on the brake caliper. The brake caliper communicates with an upper hydraulic cavity and a lower hydraulic cavity through pipelines. A bevel gear shell of a brake hub is fixed to the reduction gearbox. A ratchet wheel sleeve of a pawl type centrifugal overrun clutch is arranged on the bevel gear shell. A brake disc is mounted on the ratchet wheel sleeve. A small belt wheel fixed to the brake disc is connected with a belt wheel on the gear pump through a belt. A pawl is mounted on the brake disc. The rear ends of two brake shoes are hinged together. The front end of one brake shoe is mounted on the brake disc. The front ends of the two brake shoes are connected through a spring. Brake pads are arranged on the brake shoes. The ground driving device with the hydraulic, speed-limiting and temperature-control reverse rotation preventing function has the advantage of being high in safety.

Description

Technical field: [0001] The present invention relates to a ground drive unit for a screw pump used in an oil field. Background technique: [0002] When the screw pump oil production system is shut down, the reverse potential energy stored in the sucker rod is released instantly, which will drive the belt pulley and other devices to run in reverse at high speed, which will easily cause damage to the transmission device or personal accidents. Existing driving devices of screw pumps mostly use hydraulic brakes. The disadvantage is that if the parts are damaged or oil leaks, the effect will drop significantly or even fail, and accidents will occur, which will pose a great safety hazard. Invention content: [0003] The technical problem to be solved by the present invention is to provide a ground drive with hydraulic pressure, speed limit, temperature control and anti-reverse functions that can still achieve braking when the components of the hydraulic brake system are damaged ...

AI Technical Summary

Problems solved by technology

[0002] When the screw pump oil production system is shut down, the reverse potential energy stored in the sucker rod is released instantly, which will drive the belt pulley and other devices to run in reverse at high speed, which will easily cause damage to the transmission device or personal accidents

Existing screw pump drive devices mostly use hydraulic brakes. The disadvantage is that if the parts are damaged or oil leaks, the effect will drop significantly or even fail, and accidents will occur, which will pose a great safety hazard.

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