A double-threaded piston helical swing hydraulic cylinder and its application method
A swinging hydraulic cylinder and screw technology, applied in the field of hydraulic cylinders, can solve the problems of complex structure and large volume, and achieve the effects of small volume, simple device structure and compact structure
Active Publication Date: 2017-04-19
安徽省宁国天亿滚塑有限公司
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Problems solved by technology
[0005] Aiming at the problems that the existing oscillating hydraulic cylinder has complex structure and bulky volume, and cannot be applied to environments with high transmission precision requirements and narrow installation and use spaces, the present invention provides a double-threaded piston helical oscillating hydraulic cylinder and its use method. The device has a simple structure, small size, and precise transmission; when in use, a relatively small stroke can be used to complete a large swing angle, and is suitable for applications where high transmission accuracy is required and the installation and use space are very narrow.
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Embodiment 1
[0045] Such as figure 1 , figure 2 and image 3 As shown, a double-threaded piston helical swing hydraulic cylinder includes an output threaded shaft 1, a piston 8, a hollow screw 10, a cylinder body 11 and a nut 12; the wall thickness of the cylinder body 11 is δ=10mm, and the inner diameter is D=50mm, then The material of the output threaded shaft 1 and the hollow screw 10 is 38CrMoAlA; the material of the piston 8 and the nut 12 is ZCuSnl0Pbl; the piston 8 and the hollow screw 10 are connected by a thread, the thread is a single thread, and the tooth form angle is α″=60° , the pitch diameter of the thread is d 2 =41.026mm, the number of thread heads is N=5, and the pitch is P=1.5mm, then The piston 8 and the hollow screw 10 are arranged in the cylinder body 11; the piston O-ring 9 is arranged between the outer wall of the piston 8 and the inner wall of the cylinder body 11, and the end cover 4 is provided at the left end of the cylinder body 11; There is a through h...
Embodiment 2
[0059] Same as Example 1, except that the first-stage helical pair is a right-handed thread, and the second-stage helical pair is a left-handed thread.
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The invention discloses a double-thread screw-type swing hydraulic cylinder with a piston and a use method thereof, belongs to the field of hydraulic cylinders and solves the problems that a conventional swing hydraulic cylinder is complicated in structure and large in size and cannot be applied to environments which demand much on transmission precision and have narrow installation and use spaces. The double-thread screw-type swing hydraulic cylinder with the piston comprises an output threaded shaft, the piston, a hollow screw and an oil cylinder body and further comprises a nut, wherein the piston and the hollow screw are mutually connected and both arranged in the oil cylinder body; a through hole is formed in the piston; the output threaded shaft and the piston constitute a primary screw pair; the nut is fixed to the interior of the oil cylinder body, and the nut and the hollow screw constitute a secondary screw pair; and the primary screw pair and the secondary screw pair rotate in opposite directions. The double-thread screw-type swing hydraulic cylinder is simple in structure, small in size and precise in transmission; and during use, a relatively large swing angle can be finished by virtue of a relatively small stroke, and the double-thread screw-type swing hydraulic cylinder is suitable for being applied to environments which demand much on transmission precision and have narrow installation and use spaces.
Description
technical field [0001] The invention belongs to the field of hydraulic cylinders, and in particular relates to a double-threaded piston helical swing hydraulic cylinder and its application method. Background technique [0002] The double helix swing hydraulic cylinder has significant advantages such as large helix angle, higher torque output by the most compact structure, high load capacity, impact resistance, zero leakage, flexible installation, etc., so it is widely used in the working frame of aerial work platforms Swing; Swing positioning of drilling arm of mining equipment; Steering of tires or tracks of agricultural equipment and industrial equipment; Swing of actuators such as cleaning forklifts; Turning of garbage trucks and garbage cans, etc. It is especially suitable for structures with limited installation space to realize the swing of the mechanism. The basic principle of the double-threaded piston helical swing hydraulic cylinder is based on a multi-stage screw...
Claims
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IPC IPC(8): F15B15/04F15B15/20
CPCF15B15/08F15B15/20
Inventor 宋崇智
Owner 安徽省宁国天亿滚塑有限公司