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Approximate linear trajectory four-bar mechanism of hydraulic support

A technology of hydraulic support and four-bar mechanism, which is applied in mine roof support, mining equipment, earthwork drilling and mining, etc. It can solve the problems of excessive horizontal swing, prevent crushing and emptying, improve capacity, improve reliability and The effect of stability

Active Publication Date: 2018-10-09
CHONGQING VOCATIONAL INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the hydraulic support in the prior art approximates a linear track hinge four-bar mechanism, and the horizontal swing of the front end of the front beam is still too large in the working range; The trajectory of the point in the mining height area is an approximate straight line trajectory

Method used

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  • Approximate linear trajectory four-bar mechanism of hydraulic support
  • Approximate linear trajectory four-bar mechanism of hydraulic support
  • Approximate linear trajectory four-bar mechanism of hydraulic support

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Embodiment Construction

[0026] The present invention will be described in further detail below by means of specific embodiments:

[0027] The reference numerals in the accompanying drawings of the description include: base 1, rear connecting frame rod 2, front connecting frame rod 3, cover beam 4, balance jack 5, rear beam 6, column 7, front beam jack 8, front beam 9.

[0028] Such as figure 1As shown, the four-bar mechanism of the hydraulic support approximates a straight line trajectory, including the hydraulic support and the four-bar mechanism. The hydraulic support includes a balance jack 5, a rear beam 6, a front beam 9, a jack 8 and a front beam 9, and the rear beam 6 and the front beam 9 are hinged in turn. The beam 9 jack 8 is located at the hinge of the rear beam 6 and the front beam 9; the four-bar mechanism includes a base 1, a front link bar 3, a rear link bar 2 and a cover beam 4, and the front link bar 3 and the rear link bar 2 are both Hinged between the base 1 and the cover beam 4; ...

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Abstract

The invention relates to the technical field of moving mechanisms, in particular to a hydraulic support approximate straight-line track four-rod mechanism comprising a hydraulic support and a four-rod mechanism body. The hydraulic support comprises a balance jack, a rear beam, a front beam jack and a front beam. The rear beam is hinged to the front beam. The four-rod mechanism body comprises a base, a front connecting frame rod, a rear connecting frame rod and a shield beam. The front connecting frame rod and the rear connecting frame rod are both hinged between the base and the shield beam. A vertical column is arranged between the base and the rear beam. The shield beam is hinged to the rear beam. The balance jack is located at the hinging position of the shield beam and the rear beam. A front end point of the front beam is C, when the vertical column contracts to a maximum extent, the front end point C of the front beam moves downward to a point C1, and the vertical height of C1 from the ground is H1 which is equal to 935 mm. When the vertical column extends to a maximum extent, the front end point C of the front beam moves downward to a point C2, and the vertical height of C2 from the ground is H2 which is equal to 2635 mm. The track of the point C is an approximate straight line in a mining height area [H1, H2], and the horizontal oscillation range of the point C is smaller than or equal to 30 mm. According to the technical scheme, the horizontal oscillation range of the front end of the front beam in the working range can be reduced.

Description

technical field [0001] The invention relates to the technical field of forward-moving mechanisms, in particular to a four-bar mechanism of a hydraulic support with an approximate linear trajectory. Background technique [0002] There are three types of hydraulic supports: support type, cover type and support cover type. It includes a hinged four-bar mechanism composed of a base, a front connecting frame rod, a rear connecting frame rod and a shielding beam. Both the front connecting frame rod and the rear connecting frame rod are hinged between the base and the cover beam; between the base and the rear beam is a column driven by a hydraulic cylinder to expand and contract, and the lifting of the hydraulic support is controlled by the expansion and contraction of the column driven by the hydraulic cylinder. The technical level of the hydraulic support is one of the important signs reflecting the level of coal mine machinery and equipment. In order to improve the ability of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D23/08
CPCE21D23/08
Inventor 车林仙
Owner CHONGQING VOCATIONAL INST OF ENG
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