A pneumatic multi-disc friction clutch with fixed piston and cylinder

Abstract

The invention discloses a piston-cylinder-fixed type air pressure multi-disc friction clutch. The air pressure multi-disc friction clutch is connected between a first transmission device and a second transmission device and comprises a front-segment structure, a rear-segment structure and a connecting shaft, the connecting shaft penetrates through the front-segment structure and the rear-segment structure, and the front-segment structure comprises a piston cylinder, a piston, a pressure disc and a return spring; the rear-segment structure comprises an inner friction disc base, multiple inner friction discs, multiple outer friction discs and an outer friction disc connecting sleeve; the piston cylinder is installed on the first transmission device, the piston cylinder, the piston, the pressure disc, the return spring, the inner friction disc base and the outer friction disc connecting sleeve are sequentially connected in a matched mode, the multiple inner friction discs and the multiple outer friction discs are alternately arranged, and the second transmission device is fixedly connected on the outer friction disc connecting sleeve. The air pressure multi-disc friction clutch is compact in structure, good in protection and heat dissipation performance and convenient to maintain.

Description

technical field [0001] The invention relates to an air pressure friction clutch, in particular to a fixed-piston-cylinder air pressure multi-plate friction clutch. Background technique [0002] Pneumatic clutch has the advantages of stable combination, large transmission torque, high-frequency clutch and fast action, no need to adjust the gap, and can adapt to automatic control, especially the piston-cylinder fixed pneumatic multi-disc friction clutch also has piston-cylinder non-rotating, moment of inertia Small, simple and reliable air intake structure, widely used in some general machinery and automation equipment. [0003] However, in order to ensure generalization and serialization, the existing piston-cylinder fixed-type pneumatic multi-plate clutch adopts an integral bushing structure to facilitate loading and unloading from the power connection shaft. The cylinder bearing is independently supported on the shaft sleeve, and the anti-rotation mechanism is used to stop...

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Problems solved by technology

[0003] However, in order to ensure generalization and serialization, the existing piston-cylinder fixed-type pneumatic multi-plate clutch adopts an integral bushing structure to facilitate loading and unloading from the power connection shaft, and the open heat dissipation structure of the friction plates makes it easier for dust and rain to invade. The cylinder bearing is independently supported on the shaft sleeve and the anti-rotation mechanism is used to stop the rotation of the box, resulting in a smaller effective area of ​​the piston and an increase in the outer diameter and length of the entire clutch. The bearing and piston between the pressure plate and the piston When the clutch is engaged, the cylinder supporting bearing has to rotate and bear a large axial force. The lubrication of the two bearings is only lubricated by a part of the grease filled by the manufacturer when it leaves the factory. The capacity is limited and it is inconvenient to add it at ordinary times. Therefore, the two bearings are prone to heat and wear and cause early damage; the outer friction plate connection sleeve is generally supported on the shaft sleeve by 1-2 bearings. It is time-consuming and easy to damage the bearing position on the shaft sleeve, which affects the positioning accuracy and the maintenance and maintenance costs are high

[0004] Due to the influence of many factors above, the cost of purchasing, maintaining and repairing the existing clutch is high, and it cannot be used in occasions with rain, dust, narrow space and poor ventilation, such as the power transmission device of some special-purpose vehicles, which affects some machinery such as special-purpose vehicles. The degree of automation of equipment has become a problem to be solved urgently by those skilled in the art

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