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Liftable, foldable and extensile airborne advanced support device

A technology of advanced support and lifting device, which is applied in mine roof support, mining equipment, earthwork drilling and mining, etc., can solve the problems of poor flexibility of advanced support and achieve the effect of improving adaptability

Active Publication Date: 2017-05-31
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defect of poor flexibility of the advanced support in the prior art, and provide an airborne advanced support device that can be lifted, folded and extended to solve the above problems

Method used

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  • Liftable, foldable and extensile airborne advanced support device
  • Liftable, foldable and extensile airborne advanced support device
  • Liftable, foldable and extensile airborne advanced support device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 , figure 2 As shown, an airborne advance support device 1 that can be lifted, folded, and extended includes a plurality of support frames 10 that are sequentially hinged; the number of support frames 10 is generally an even number, which is convenient for left and right symmetrical folding. There are four support frames 10 provided by the present invention. From the middle to both sides, two adjacent support frames 10 are driven to expand or fold by the first driving mechanism 11 . That is to say, the two supporting frames 10 on the left are driven by a first driving mechanism 11, and the two supporting frames 10 on the right are driven by a first driving mechanism 11, and the left and right sides are mirror images.

[0044]The support frame 10 comprises a main frame 12 and a widening bracket 13 arranged on one side of the main frame 12; Stretch up. There are many ways of sliding and fixing, such as socketing and track sliding and fixing. The pres...

Embodiment 2

[0047] Such as image 3 , Figure 4 , Figure 5 As shown, in order to further increase the width of the advance support 1 , widening brackets 13 can be provided on both sides of the main frame 12 . The widening brackets 13 on both sides are a mountain-shaped structure arranged opposite to each other. Correspondingly, two second drive mechanisms 14 with opposite jacking directions are fixed inside the middle rod 123 ; In order to pack up, the overall volume of the advance support 1 is relatively small, the present invention adopts the lower surface spacing between the two left side bars 132 of one of the widening brackets 13 to be equal to the upper surface spacing between the two left side bars 132 of the other widening bracket 13. The characteristics of the surface spacing make the two widened brackets 13 folded together, and the left side bars 132 are overlapped together to reduce the volume. Of course, this requires that the inner cavity diameters of the left rod 121 an...

Embodiment 3

[0049] Such as figure 1 , figure 2 As shown, on the basis of Embodiment 1, an extension bracket 15 is also provided on the left side of the extensible frame body 10 at the left end of the advance support 1, and an extension bracket 15 is also provided on the right side of the extensible frame body 10 at the right end. The extended bracket 15 is slidably fixed on the widened bracket 13 on the extensible frame body 10 at the left end or the right end of the leading support 1, and the extended bracket 15 is driven to expand and contract by the third driving mechanism 16. Equally, there are many ways to slide and fix the extended bracket 15 and the widened bracket 13, which can be sleeved or rail-slidingly connected. The present invention adopts socket form, specifically:

[0050] Extended bracket 15 is the third frame body that is formed by a telescopic rod 151 and two parallel cross bars 152 that are vertically fixed on the two ends of telescopic rod 151; Hollow structure, t...

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Abstract

The invention provides a liftable, foldable and extensile airborne advanced support device. The device comprises a lifting device and an advanced support. The lifting device comprises a movable base and a lifting support. The lifting support is fixed on the movable base. The advanced support is fixed on the lifting support and comprises multiple support racks which are hinged onto each other. From the middle of the length direction of the advanced support towards two sides, two adjacent support racks are driven by a first driving mechanism to stretch or fold. Each support rack comprises a main rack and a widening support at least arranged on one side of the main rack. Each widening support is slidably fixed on each main rack and driven by a second driving mechanism to retract along the length direction of a roadway. The liftable, foldable and extensile airborne advanced support device has following beneficial effects: the movable base drives the lifting support to move back and forth; the lifting support drives the advanced support to move up and down; and by means of the multiple hinged support racks, an irregular unprotected area which is just exposed can be supported in an adaptable manner.

Description

technical field [0001] The invention relates to an airborne advanced temporary support for coal mine mechanized excavation and development, in particular to an airborne advanced temporary support device that can be lifted, folded and extended. Background technique [0002] At present, in large-scale modern coal mines, the tunneling construction of coal and rock roadways has been mechanized, mostly supported by anchor beams and nets, and the tunneling speed is fast. However, there are still great potential safety hazards in the actual production process. Namely: after the excavation of the roadheader is completed, the support operators need to enter the newly exposed empty roof area for temporary support. Often, the roof will fall and the gravel will injure the construction workers, and the metal mesh and steel belt supporting the roof will also be damaged. It is necessary to use a single body to reach the roof, and the operator has to enter the empty roof area. There are al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04E21D23/16
CPCE21D23/04E21D23/0409E21D23/16
Inventor 刘德芝汪林清
Owner HUAINAN MINING IND GRP
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