Dual-protection infrared sensor of electric block
A technology of infrared sensor and electric hoist, which is applied in the direction of transmission of sensing member, hoisting device, spring mechanism, etc. by optical device, which can solve the problem that electric hoist cannot be installed and used.
Inactive Publication Date: 2009-11-25
孙佩杰
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[0002] The patent number authorized by the State Intellectual Property Office is 200720089970.9, which can only be used for the use of electric hoists with rope guides, and electric hoists without rope guides cannot be installed and used.
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[0007] The fixed end 12 of the wire rope of the electric hoist is fixed with a rise / total stop sensor, and the pull rod 11 end of the sensor is connected with a counterweight weight 14 through the wire rope. A pair of deep and shallow grooves 4, 3 are opened on the end face of the body 5, and two pairs of infrared emitting and receiving diodes are respectively inserted in the cavities of the deep and shallow grooves 4, 3, and the wires pass through the wire hole 2 and the wire lock on the fixing seat 1. Tighten it and connect it with the external circuit. The spring 9 is installed on the pull rod 11. The square body at the other end of the pull rod is inserted into the light path window at the center of the deep and shallow groove. The circuit control when stopping or approaching the limit position is the same as the control circuit of Patent No. 200720089970.9 authorized by the State Patent Office, and will not be described here. The infrared emitting and receiving tube inser...
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The invention discloses a dual-protection infrared sensor of an electric block, comprising a depth groove arranged on the end surface of a column sensor. A cavity inside the depth groove is respectively inserted by two pairs of infrared emitting and receiving diodes and connected with an infrared circuit through a lead wire, and the central position of the depth groove is provided with a window; the dual-protection infrared sensor is arranged at the upper end of a steel wire positioned at the fixed end of a wound roll shell of the electric block; the outer wall of a fixed seat is provided with a key slot which slides by matching with a key slot of a pull rod, the pull rod is provided with a spring, the front end of the pull rod is also provided with a through hole inserting into the window arranged in the central position of the depth groove, the pull rod is connected with a heavy bob through a connecting rope, and the heavy bob downwards pulls so that the pull rod stops the optical path zero-signal transmission of the infrared emitting and receiving diodes in the window. The invention has the advantages that when the electric block lifts heavy articles, the dual-protection infrared sensor can automatically stop the work and cut the general supply because the electric block lifts to an utmost limit or after contacts of an AC contactor of a lifting motor are bonded, thereby the accidents are effectively prevented.
Description
Technical field: [0001] The invention relates to a double-protection infrared sensor when the hook reaches the top when the electric hoist is lifted or when the contacts of the ascending AC contactor are stuck. Background technique: [0002] The existing patent number authorized by the State Intellectual Property Office is 200720089970.9, which can only be used for the use of the rope guide on the electric hoist, and the electric hoist without the rope guide cannot be installed and used. Invention content: [0003] The task of the present invention is to propose a dual-protection infrared sensor that can be used with or without a rope guide and prevents the top from rushing and the contact of the AC contactor when it is lifted. The task of the present invention is completed in this way. The infrared sensor includes a deep and shallow groove on the end face of the cylindrical sensor. Two pairs of infrared emitting and receiving diodes are respectively inserted in the cavity...
Claims
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IPC IPC(8): B66D1/56B66D1/12B66D1/40G01D5/34
Inventor 孙佩杰孙方博
Owner 孙佩杰