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Telescopic reciprocating motion mechanism

A reciprocating mechanism and telescopic technology, applied in the direction of fluid pressure actuating devices, etc., can solve the problems of affecting the response speed of reciprocating motion, high manufacturing cost, complex structure, etc.

Active Publication Date: 2021-07-23
WEIFANG LICHUANG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned reciprocating hydraulic drive device can realize automatic reciprocating motion without a reversing valve, the structure is relatively complicated, the manufacturing cost is high, and the use of multiple components in the hydraulic cylinder to achieve reversing will affect the response speed of reciprocating motion, which is not conducive to popularization. use

Method used

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  • Telescopic reciprocating motion mechanism
  • Telescopic reciprocating motion mechanism
  • Telescopic reciprocating motion mechanism

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Experimental program
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Effect test

Embodiment 1

[0039] Depend on Figure 1 to Figure 4 Commonly shown, the telescopic reciprocating structure disclosed in this embodiment includes a cylinder 1, a piston 2 disposed in the cylinder 1, and a piston rod 3 connected to one end of the piston 2, and the other end of the piston 2 is connected to the cylinder 1. A fluid pressure chamber 4 is formed between them; it also includes a rotary return mechanism 5 arranged on the cylinder 1 and used to apply a return torque to the piston rod 3, and a reciprocating return mechanism 6 for axially returning the piston rod 3; The circumference of the piston 2 is provided with a helical annular groove 21 and a helical fluid groove 22 with the same helical direction, and the open end of the helical fluid groove 22 communicates with the fluid pressure chamber 4; the cylinder body 1 is provided with a fluid inlet hole 11, a fluid outlet The hole 12 and the fixing pin 13 with one end extending into the helical annular groove 21 ; the helical fluid g...

Embodiment 2

[0051] The structure of the second embodiment is basically the same as that of the first embodiment, except that the rotary return mechanism 5 is more convenient for assembly in this embodiment, and the assembly method is simple. Only the differences are described in detail below.

[0052] Depend on Figure 7 to Figure 9 as well as Figure 10.1 and Figure 10.2 Commonly shown, the optimized mounting base 51 is a split structure, including two detachably connected through pin shafts and the same structure limit plate 511 (circular limit plate); two arc groove units 512 are arranged on the limit On the bit plate 511 ; a sliding piece (referred to as the second sliding piece 514 ) is disposed in each arc-shaped guide groove 5121 . The second sliding member 514 is axially limited by two limiting plates 511; The sliding shaft part 5142, and the two sliding shaft parts 5142 are adapted to the arc-shaped guide groove 5121 on the corresponding limiting plate 511, and the sliding s...

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Abstract

The invention provides a telescopic reciprocating motion mechanism. The telescopic reciprocating motion mechanism comprises a cylinder body, a piston, a piston rod, a rotary return mechanism and a reciprocating return mechanism, wherein the rotary return mechanism is arranged on the cylinder body and used for applying return torque to the piston rod, and the reciprocating return mechanism is used for enabling the piston rod to achieve axial return; spiral annular grooves and spiral fluid grooves communicating with a fluid pressure cavity between the piston and the cylinder body are formed in the periphery of the piston; the cylinder body is provided with a fluid inlet hole, a fluid outlet hole and a fixing pin; the spiral fluid grooves selectively communicate with the fluid inlet hole or the fluid outlet hole; under the action of fluid in the fluid pressure cavity and the reciprocating return mechanism, the spiral annular grooves are matched with the fixing pin to enable the piston rod to do rotary telescopic motion and enable the rotary return mechanism to generate return torque; and when the piston rod rotates forwards to stretch out or rotates backwards to retract in place, the piston rod changes the current rotating direction under the action of the return torque, and the communication state of the spiral fluid grooves and the fluid inlet hole and the communication state of the spiral fluid grooves and the fluid outlet hole are switched. According to the telescopic reciprocating motion mechanism, automatic reciprocating motion can be achieved without additionally arranging a reversing mechanism, the structure is simple, and the manufacturing cost is low.

Description

technical field [0001] The invention belongs to the technical field of reciprocating motion mechanisms, in particular to a telescopic reciprocating motion mechanism. Background technique [0002] There are many mechanisms to realize reciprocating motion, such as crank linkage mechanism, linear screw mechanism, cam mechanism and hydraulic push rod mechanism. In the hydraulic system, the hydraulically driven reciprocating mechanism is more common. In addition to the cylinder, piston and piston rod, this structure usually needs to add a reversing mechanism such as a reversing valve, through which the oil in and out can be changed. The direction of the piston is used to realize the reciprocating motion of the piston; although the reciprocating motion can be realized, the reciprocating motion is unstable, the reciprocating stroke cannot be well controlled, and the use effect is poor. [0003] In view of this, some hydraulic automatic reciprocating motions that do not require rev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/06F15B15/14F15B15/22
CPCF15B15/063F15B15/14F15B15/1447F15B15/149F15B15/1428F15B15/1457F15B15/226
Inventor 王立峰王秀强冷长庚吴龙龙尹伟科
Owner WEIFANG LICHUANG ELECTRONICS TECH