Patent Application
20150362035
1. Field of the Invention
The present invention relates to a hydraulic auxiliary brake device of a motor used for oil production, and more particularly to a hydraulic auxiliary brake device having a hydraulic brake to prevent a reverse turning from causing damages in case of a power failure.
2. Description of the Prior Art
A conventional spiral rod motor used for oil production has a long hollow turning shaft and an oil extraction pump to extending into an oil field underground. The turning shaft and the spiral oil extraction pump are turned to extract the petroleum underground. The conventional spiral rod motor doesn't have a brake device. Hence, in case of a power failure, the turning shaft and the oil extraction pump which are very long (about thousands of meters) will a counterforce when they are stopped turning, which causes a reverse turning of the turning shaft and the oil extraction pump. The reverse tuning will cause the petroleum to flow reversely and the pars of the equipment to turn reversely and to cause damages accordingly. To prevent the reverse turning in case of a power failure, it is necessary to provide an apparatus to prevent the petroleum from flowing backward, namely, the conventional motor used for oil production doesn't have a brake device itself. Thus, the conventional motor is unable to brake the turning shaft and the oil extraction pump instantaneously in case of a power failure to result in a reverse turning. Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve these problems.
The primary object of the present invention is to improve the problem of the prior art and to provide a motor having a hydraulic auxiliary brake device. The hydraulic auxiliary brake device comprises a turning shaft, a brake disc, a hydraulic brake corresponding to the brake disc, a one-way clutch gear, an oil pump, an oil pressure pipe connected with the hydraulic brake. When the turning shaft and the oil extraction pump of the motor are turned normally for oil production, the oil pump doesn't output oil pressure and the hydraulic brake doesn't activate. In case of a power failure to cause that the turning shaft is instantaneously turned reversely, the oil pump is opened to output oil pressure and the hydraulic brake is activated to brake the brake disc so as to prevent the turning shaft from turning reversely.
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.
Referring to
According to the aforesaid device and structure, the function and effect of the present invention are described hereinafter. When the motor 10 is turned under the normal power supply, as shown in
As the foregoing, the auxiliary brake structure of the present invention is integrated with the motor to reduce the size, and can brake quickly to prevent a reverse turning.
Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.
