A clamping device for a drum brake of a crane hoisting mechanism

Abstract

The invention relates to a clamping device for a roller brake of a hoisting mechanism of a hoist. The clamping device comprises a roller, wherein a fixing plate is arranged at one end of the roller; connecting plates are arranged on the right side face of the upper portion of the fixing plate and connected with a U-shaped support through bolts; a spring supporting seat is embedded in the side wall of the U-shaped support; one end of the spring supporting seat is connected with a threaded rod through screw threads; the other end of the spring supporting seat is connected with an adjusting ring and a fixing ring through screw threads; a spring base and a spring are arranged sequentially from inside to outside in the spring supporting seat; the other end of the spring is connected with a brake shoe; a spring casing is welded on the outer side face of the upper end of the brake shoe; a pressure sensor is arranged at the bottom of the spring casing; a fixing casing is welded on the outer side of the lower end of the brake shoe; a fixing shaft is arranged inside the fixing casing; a cam shaft is arranged between the fixing plate and the U-shaped support; the outer wall of the right portion of the cam shaft is sleeved with a cam matched with the brake shoe. The clamping device has the following advantages: the structure is simple; usage and adjustment are convenient; the clamping force can be controlled.

Description

Technical field [0001] The invention belongs to the technical field of crane roller brake equipment, and particularly relates to a clamping device for a roller brake of a crane lifting mechanism. Background technique [0002] For production cranes, electric brakes are currently used to brake the drum, and when the drum needs to be braked, the brake shoe is used to stop the drum. The existing brakes have certain disadvantages, mainly in The brake needs to clamp the brake shoe under the action of external force to normally stop the drum. When the external drive device is in the power-off state, the side cannot normally control the start and stop of the drum, so when the drum lifts heavy objects, if the brake suddenly loses power It is difficult to ensure that the heavy objects will not fall, and may even cause accidents. In addition, the brake provided on the outer wall of the drum is not easy to adjust, so that the brake clamping state is uncontrollable. Summary of the invention ...

AI Technical Summary

Problems solved by technology

[0002] For production cranes, electric brakes are currently used for the braking of the drum, and when the drum needs to be stopped, the brake shoes are used to stop the drum from working. There are certain disadvantages in the existing brake, mainly in the following aspects: The brake needs to clamp the brake shoes under the action of external force to stop the drum normally. When the external force drive device is in the power-off state, the lower side cannot normally control the start and stop of the drum. In this way, when the drum lifts heavy objects, if the brake suddenly loses power , it is difficult to ensure that heavy objects will not fall, and may even cause accidents. In addition, the brakes set on the outer wall of the drum are not easy to adjust, so that the clamping state of the brakes is uncontrollable

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