Pressure sensor for weighing load of mine multi-rope elevator
A multi-rope hoist and pressure sensor technology, applied in elevators, transportation and packaging, etc., can solve problems such as data jump interference, severe vibration of wire rope, and inaccurate wire rope tension
Active Publication Date: 2019-09-20
ZAOZHUANG UNIV
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Problems solved by technology
[0003] At present, it is common to monitor the wire rope tension by measuring the oil pressure of the balance cylinder in the automatic balance device of the wire rope tension of the multi-rope hoist. However, due to the friction between the piston rod and the inner wall of the oil cylinder, the measured wire rope tension is not accurate enough.
In order to solve this problem, in the prior art, an ordinary pressure sensor is installed between the piston rod and the slider of the balance oil cylinder, but due to factors such as the rough surface of the tank road and wind resistance, the vibration of the wire rope is relatively severe, so the measured data will have There is still a large gap between the measured tension of the wire rope and the actual load of the hoist due to a lot of sudden jump interference
Method used
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[0028] The present invention will be further described below.
[0029] Such as Figure 1 to Figure 3 As shown, a pressure sensor used for load weighing of multi-rope hoists in mines includes a sensor body 1. The sensor body 1 includes a base 2 and an end cover 3 installed on the base 2. The section of the end cover 3 is inverted The upper end surface is provided with a groove 6 matching the piston rod 5 of the balance cylinder 4, and the inside of the end cover 3 below the groove 6 is provided with a stepped blind hole 7; the end cover 3 is provided with a stepped blind hole 7 Interconnected wire channel 9; a cylindrical oil chamber 10 is coaxially opened below the stepped blind hole 7, the lower end of the cylindrical oil chamber 10 runs through the bottom of the end cover 3, and the upper end of the cylindrical oil chamber 10 is connected to the lower end surface of the stepped blind hole. The gap in the gap forms a strain beam 11, and the strain gauge 8 is pasted on the up...
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Abstract
Disclosed is a pressure sensor for weighing a load of a mine multi-rope elevator. The pressure sensor comprises a base and an end cover. The section of the end cover is in a T shape, a groove is formed in the upper end surface of the end cover, and a stepped blind hole is formed in the lower portion of the groove. A wire channel communicating with the stepped blind hole is formed in the circumference of the end cover. A cylindrical oil cavity is coaxially formed below the stepped blind hole. The lower end of the cylindrical oil cavity penetrates through the bottom of the end cover. A gap between the upper end of the cylindrical oil cavity and the lower end surface of the stepped blind hole is a strain beam, and a strain gauge is attached to the upper surface of the strain beam. The base is in a U shape, the upper portion of the inner side of a groove in the upper end surface of the base is in threaded fit with the upper portion of the periphery of a boss at the lower end surface of the end cover, and a flat oil cavity is formed between the upper end surface of the groove and the lower end surface of the boss. An oil injection channel communicating with the oil cavity is formed in the circumference of the outer side of the base. A supporting seat at the lower end of the base is arranged in a groove in a sliding block of a balancing oil cylinder. A cantilever beam is arranged between the lower portion of the oil cavity and the supporting seat. A perforated plate is embedded in the cylindrical oil cavity. The sensor can improve the calculation accuracy of the load of the elevator.
Description
technical field [0001] The invention relates to a pressure sensor, in particular to a pressure sensor used for load weighing of a multi-rope hoist in a mine, and belongs to the technical field of mine hoists. Background technique [0002] The hoisting system is the "throat" of coal mine production and transportation, and its normal operation plays an important role in the life safety of miners and the production safety of coal mines. During the operation of the lifting system, due to the constraints of the site environment, it is difficult to directly measure the load of the hoist. Considering that the hoist is suspended at the end of the wire rope, the real-time weighing of the total load of the hoist can be realized indirectly by measuring the tension of the wire rope. [0003] At present, it is common to monitor the wire rope tension by measuring the oil pressure of the balance cylinder in the automatic balance device of the wire rope tension of the multi-rope hoist. How...
Claims
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Login to View More IPC IPC(8): B66B5/00
CPCB66B5/0018
Inventor 张晓光孙正宋振越卢纪丽徐桂云李辉
Owner ZAOZHUANG UNIV