Pneumatic wind-proof rail clamping device

Abstract

The invention provides a pneumatic wind-proof rail clamping device, and belongs to the technical field of lifting equipment. The problems that when an existing rail clamping device is used, stabilityand safety are poor are solved. The pneumatic wind-proof rail clamping device comprises a first clamp arm and a second clamp arm which are arranged in pair and can rotate, an air cylinder is arrangedbetween the top end of the first clamp arm and the top end of the second clamp arm, and comprises an air cylinder body and a piston rod, the air cylinder body is hinged to the first clamp arm, the piston rod is hinged to the second clamp arm, clamping parts are arranged at the bottom end of the first clamp arm and the bottom end of the second clamp arm, and a clamping spring is arranged between the first clamp arm and the second clamp arm. when the device is used, the clamping spring is in the compression state all the time, clamping parts on the two clamp arms are forced to abut against an I-shaped steel rail way to achieve clamping, when the rail clamping device needs to be opened, the air cylinder overcomes spring force of the clamping spring, the rail clamping device is opened, the structure is simple, and stability is good.

Description

technical field [0001] The invention belongs to the technical field of lifting equipment, in particular to a rail clamp, in particular to a pneumatic windproof rail clamp. Background technique [0002] The crane rail clamp is mainly used to prevent the outdoor crane from sliding along the track under the action of strong wind. It usually uses a clamp connected with the bottom structure of the crane to clamp the two sides of the head of the track to brake the crane. Now Some rail clamps are generally divided into two types: manual and electric. Among them, the manual rail clamp is generally a screw type with a simple structure, but the clamping force is small and the action is slow. For small or temporary cranes, for large cranes or port cranes, electric rail clamps are mainly used. The existing electric rail clamps are complex in structure, and most of them are clamped by hydraulic pressure. For example, Chinese patent [application published No. CN105883611A] discloses an e...

AI Technical Summary

Problems solved by technology

[0002] The crane rail clamp is mainly used to prevent the outdoor crane from sliding along the track under the action of strong wind. It usually uses a clamp connected with the bottom structure of the crane to clamp the two sides of the head of the track to brake the crane. Now Some rail clamps are generally divided into two types: manual and electric. Among them, the manual rail clamp is generally a screw type with a simple structure, but the clamping force is small and the action is slow. For small or temporary cranes, for large cranes or port cranes, electric rail clamps are mainly used. The existing electric rail clamps are complex in structure, and most of them are clamped by hydraulic pressure. For example, Chinese patent [application published No. CN105883611A] discloses an electro-hydraulic rail clamp, which includes a fixed frame, on which a connecting rod A and a connecting rod B are respectively hinged near the left end and the right end, and the connecting rod A and the connecting rod The lower end of B is respectively fixedly connected with clamp arm A and clamp arm B, and a steel rail is arranged between the clamp arm A and the clamp arm B, and the described steel rail is located below the fixed frame, and the clamp arm A and the clamp arm B is arranged symmetrically on both sides of the rail, and the top ends of the connecting rod A and the connecting rod B are respectively hinged with hinged rod A and hinged rod B, and the top ends of the hinged rod A and hinged rod B are connected with an electro-hydraulic telescopic rod

Although the hydraulic rail clamp can achieve a certain clamping effect, due to the complex structure of the hydraulic rail clamp, it is heavy, large in size, high in cost, poor in sealing performance, and the hydraulic oil is greatly affected by temperature. The viscosity will change with the change of temperature. It is not suitable for long-distance transmission of power, and some air mixed in it may easily cause crawling. Vibration and noise will seriously affect the working performance, and the hydraulic components require high precision and are difficult to assemble. Strict use and maintenance

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