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Spiral type variable capacity buffer and work method thereof

A buffer, screw technology, applied in the direction of shock absorbers, shock absorbers, liquid shock absorbers, etc., can solve the problems of inability to automatically adjust the buffer resistance, uncontrollable buffer process, unstable buffer process, etc., to achieve rapid adjustment , the effect of fast response and large buffer range

Pending Publication Date: 2019-06-14
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, whether it is a single-cylinder or multi-cylinder buffer, once the current buffer structure is manufactured, its structure is fixed. When performing buffering, the buffering process is not stable and the peak pressure is high for different external loads. The buffering process is uncontrollable and poorly adaptable, and the buffering resistance cannot be automatically adjusted according to different working conditions

Method used

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  • Spiral type variable capacity buffer and work method thereof
  • Spiral type variable capacity buffer and work method thereof
  • Spiral type variable capacity buffer and work method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 1 to Figure 6 As shown, the present embodiment provides a spiral variable capacity buffer, which includes a cylinder body 6, a first piston 5, a first piston rod 2, a striker 1 and a valve block 9;

[0050] Wherein the first piston 5, the first piston rod 2 and the striker 1 are sequentially connected, the first piston 5 is located in the cylinder body 6 and encapsulates the cylinder body 6 through the first end cover 4, and the first piston 5 is provided with a spiral groove, A magnetically controlled shape memory alloy block is installed in the spiral groove; the first piston 5 divides the inner chamber of the cylinder 6 into an upper chamber A and a lower chamber B;

[0051] A first return spring 3 is set on the first piston rod 2 between the bumper 1 and the first end cover 4, an electromagnetic coil 7 is arranged on the outer periphery of the cylinder body 6, and a valve block 9 is connected to the bottom of the cylinder body 6;

[0052] The valve bl...

Embodiment 2

[0057] A spiral variable capacity buffer, the structure of which is as described in Embodiment 1, the difference is that: the spiral grooves are multi-head parallel grooves, and the multi-head parallel grooves are evenly distributed on the surface of the first piston 5 . The magnetically controlled shape memory alloy block is distributed in each wire groove around a circumference.

Embodiment 3

[0059] A working method of a spiral variable capacity buffer, comprising the following steps:

[0060] (1) When the impact head 1 is impacted, the first piston rod 2 moves down, and at the same time the pressure sensor detects the pressure change and transmits the pressure signal to the controller. The controller controls the power supply to adjust to the electromagnetic The size of the coil 7 power supply current, so as to achieve the adjustment of the field intensity generated by the electromagnetic coil 7;

[0061] (2) The electromagnetic coil 7 adjusts the magnetically controlled shape memory alloy block through different field strengths, thereby adjusting the capacity of the helical groove; that is, when the pressure sensor transmits a pressure signal that becomes smaller, the field strength generated by the electromagnetic coil 7 becomes larger, The second piston rod 11 in the magnetically controlled shape memory alloy block on the helical groove is stretched out, and th...

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PUM

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Abstract

The invention relates to a spiral type variable capacity buffer and a work method thereof. The variable capacity buffer comprises a cylinder body, a first piston, a first piston rod, a bump head, anda valve block; the first piston, the first piston rod and the bump head are sequentially connected, the first piston is located in the cylinder body, the cylinder body is sealed through the first endcover, a spiral line groove is formed in the first piston, a magnetically controlled shape memory alloy block is arranged in the spiral line groove, the position, between the bump head and the first end cover, of the first piston rod is sleeved with a first reset spring, an electromagnetic coil is arranged on the periphery of the cylinder body, and the bottom of the cylinder body is connected withthe valve block. Compared with a common spiral line groove structure, the buffer has the beneficial effects that a series of spiral grooves are formed in the piston, the magnetically controlled shapememory alloy block is arranged in the groove of the first piston, according to various working conditions, the capacity of the spiral line grooves can be adjusted in a self-adaptation manner, the local resistance is changed, good controllability is achieved, the magnetically controlled shape memory alloy block is high in deforming response speed, the circulation capacity of the spiral line grooves can be rapidly adjusted, and the buffer range of the buffer is large.

Description

technical field [0001] The invention relates to a spiral variable capacity buffer and a working method thereof, belonging to the technical field of buffers. Background technique [0002] In the prior art, there are buffers with a single oil cylinder structure and inner and outer cylinder double oil cavity structures. For example, the Chinese patent document CN104299862A discloses a buffer with an inner and outer cylinder double oil chamber structure. During the working process of the buffer, when the piston rod drives the piston to move backward, the hydraulic oil enters the piston cover and the piston through the separation aid hole. Between, the piston cover and the piston are separated smoothly, the axial oil hole on the piston is not blocked by the piston cover, the hydraulic oil on the rear side of the piston flows to the front side of the piston through two lines, one line is the axial oil hole on the piston, The other one is the rear radial oil hole, the annular gap ...

Claims

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Application Information

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IPC IPC(8): F16F9/512F16F9/34F16F9/18
CPCF16F9/512F16F9/34F16F9/18
Inventor 王成龙刘延玺苗根远陈萌曾庆良邱志伟
Owner SHANDONG UNIV OF SCI & TECH
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