Shifting fork type pneumatic actuator
A pneumatic actuator, fork-type technology, applied in engine components, valve details, valve operation/release devices, etc., can solve problems such as the difficulty of pneumatic actuators to meet high torque requirements
Inactive Publication Date: 2020-06-12
无锡市华机机械制造有限公司
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Problems solved by technology
[0003] In order to solve the problem that the existing pneumatic actuators are difficult to meet the requirements of large torque, the present invention provides a fork type pneumatic actuator, which can meet the requirements of large torque pneumatic actuators
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[0009] See figure 1 , figure 2 As shown, a fork-type pneumatic actuator includes a housing 1. Pistons 2 are arranged at both ends of the housing 1. A rotating shaft 3 penetrating through the housing is installed in the middle of the housing 1. The housing 1 is provided with Compressed air inlet and outlet 4, a fork block 5 is set on the rotating shaft 3, the inner surface of the through hole in the middle of the fork block 5 is a sawtooth structure, the outer surface of the rotating shaft 3 is an annular tooth surface matched with the sawtooth structure, and the two ends of the fork block 5 are open There is a symmetrically arranged bayonet, the piston 2 is movably connected to one end of the middle block 7 through the first pin shaft 6, and the other end of the middle block 7 has a gap corresponding to the shift fork block 5, and the second pin shaft 8 is installed at the gap. The pin shaft 8 is movable and embedded in the bayonet socket of the shift fork block 5, and when ...
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The invention relates to the technical field of driving devices, in particular to a shifting fork type pneumatic actuator, which can meet the requirement of a high torque pneumatic actuator. The shifting fork type pneumatic actuator comprises a shell; pistons are arranged at the two ends in the shell; a rotating shaft which penetrates through the shell is mounted in the centre of the shell; a compressed air inlet and a compressed air outlet are formed in the shell; the shifting fork type pneumatic actuator is characterized in that a shifting fork block is mounted on the rotating shaft in a sleeving manner; the inner surface of a through hole in the centre of the rotating shaft is of a sawtooth structure; the outer surface of the rotating shaft is an annular tooth surface matched with the sawtooth structure; bayonets which are arranged symmetrically are formed in the two ends of the shifting fork block; the pistons are movably connected to one end of an intermediate block through firstpin shafts; a gap corresponding to the shifting fork block is formed in the other end of the intermediate block; a second pin shaft is mounted at the gap; the second pin shaft is movably embedded intothe bayonets of the shifting fork block in a clamping manner; and when the two pistons move inwards or outwards simultaneously, power is transferred by the intermediate blocks and the shifting fork blocks to make the rotating shaft rotate.
Description
technical field [0001] The invention relates to the technical field of driving devices, in particular to a fork type pneumatic actuator. Background technique [0002] The pneumatic actuator is an actuator that uses air pressure to drive the opening and closing or adjusting the valve. It is also called a pneumatic actuator or a pneumatic device. It uses compressed air to move the piston in the pneumatic actuator, thereby driving the middle shaft to achieve a 90-degree rotation. At present, the common transmission mode is a rack and pinion meshing structure. The rack is installed on the piston. When the piston drives the rack to move, the gear will rotate accordingly. This structure is better under low torque conditions. It is difficult for the gear and the rack to drive the rotation of the rotating shaft. Contents of the invention [0003] In order to solve the problem that the existing pneumatic actuator is difficult to meet the high torque requirement, the present invent...
Claims
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IPC IPC(8): F16K31/122
CPCF16K31/122
Inventor 杨利群肖亮赵建群
Owner 无锡市华机机械制造有限公司