Title:
A LIGHT-DUTY HYDRAULIC BRACKET
Document Type and Number:
WIPO Patent Application WO/2009/089769
Kind Code:
A1
Abstract:
A light-duty hydraulic bracket for working surfaces in coal mine includes a monolithic
top beam (1), a hydraulic support (8), a front extending beam (5) and a front extending
beam cylinder (7), a baffle device (9), a sliding element (13, 23) which is slidable
on a guide (22, 24) arranged on one side of the top beam (1), a moving cylinder (12)
hinged to the sliding element (13, 23). Wherein at least one engagement mechanism
is provided between two adjacent top beams (1). The engagement mechanism consists
of a moving element (26) which is movable left and right, a sliding element (13,
23) which is slidable along the guide (22, 24) forward and backward, and a connecting
element (16) which at one end thereof connects to the moving element (26) and at
the other end thereof connects to the sliding element (13, 23). The engagement
mechanism provides greater clearance of bracket adjustment by means of the movement
of the moving element (26), so that it is easy to adjust the distance between brackets,
especially suitable to support uneven top plates.
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Inventors:
LI ZEYU (CN)
Application Number:
PCT/CN2009/000033
Publication Date:
July 23, 2009
Filing Date:
January 09, 2009
Export Citation:
Assignee:
LI ZEYU (CN)
International Classes:
E21D15/44; E21D23/04; E21D23/16
Foreign References:
| CN201180555Y | 2009-01-14 | |||
| CN2818779Y | 2006-09-20 | |||
| CN1844640A | 2006-10-11 | |||
| CN1011605B | 1991-02-13 | |||
| CN2096643U | 1992-02-19 |
Attorney, Agent or Firm:
AMBOYNA INTELLECTUAL PROPERTY AGENT LTD. (Hejingyuan Building AJimenli,Haidian District, Beijing 8, CN)
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