CN2163232Y

CN2163232Y - High steady low position hydraulic prop

Info

Publication number: CN2163232Y
Application number: CN 93217825
Authority: CN
Inventors: 王福林; 李崇训; 刘怀树
Original assignee: SHITANJING MINING AFFAIRS BUREAU
Current assignee: SHITANJING MINING AFFAIRS BUREAU
Priority date: 1993-07-02
Filing date: 1993-07-02
Publication date: 1994-04-27
Anticipated expiration: 2003-07-02

Abstract

The utility model relates to a novel self-walking stepping hydraulic support frame used for the low level caving coal mining method. The front end of a top beam of the support frame is hinged with a front beam with a side guard plate to realize the full seal of a top plate and the close top contact. The support frame forms a four connecting rod supporting mechanism through a Y-shaped supporting rod, a supporting rod, a base, and a shielding beam and has high stability. The back part of the shielding beam of the support frame is hinged with a tail beam with an inserting plate, and the shielding beam and the tail beam are respectively hinged with both ends of a swinging jack so that the tail beam can swing, and the operation space of the back part of the support frame is enlarged, which is favorable to the top coal breaking and the successful recovery.

Description

High steady low position hydraulic prop

The utility model belongs to mine equipment hydraulic support field.

In the existing domestic and international low caving coal hydraulic support, its back timber and caving shield mostly are overall structure, the FZ250(15/28 that existing Zhengzhou coal machine factory produces) the type hydraulic support, though its back timber is told front-axle beam, but front-axle beam does not have side guard board, is unfavorable for closely connecing top and anti-leak-stopping top; Though its caving shield is told tail boom, between tail boom and base hydraulic prop is arranged, limited support afterbody working space insufficient strength, stable bad.

The purpose of this utility model be to provide a kind of low caving coal coal-mining method used can closely connect the top, and full support top seal has the novel high stability low caving coal hydraulic support that can swing the short-tail beam.

The utility model comprises front-axle beam, back timber, caving shield, tail boom, base, powerful pedestal, pillar, and at the articulated front-axle beam that has side guard board of back timber front end, back timber and front-axle beam are hinged on the jack two ends; Powerful pedestal on base and caving shield form four link supports mechanisms by Y type pole and pole, make support have high stability; Caving shield and tail boom are hinged on the two ends of swing jack respectively.

The advantage of this support is: 1, the articulated front-axle beam that has side guard board of back timber front end, and can realize totally-enclosed top board and closely connect the top; 2, powerful pedestal, Y shape pole, pole and caving shield form four link supports mechanisms, have strengthened support stability; 3, caving shield and tail boom are hinged on swing jack two ends respectively, thereby make support rear portion working space bigger; Swing by tail boom can also make the back zone transporter protected fully or be exposed to coal recovery area, top fully, helps crushing voerhead coal and reclaims smoothly.

Embodiment of the present utility model is illustrated in conjunction with the accompanying drawings.

Fig. 1 is the utility model structural representation.

Fig. 2 is the A-A sectional drawing of Fig. 1.

As shown in the figure, the articulated successively from front to back forestope in the utility model top (1), front-axle beam (2), back timber (3), caving shield (4), tail boom (5); Forestope belongs to prior art; In front-axle beam (2), back timber (3), caving shield (4), tail boom (5) both sides, the side guard board (6) that either side is freely stretched is all arranged, side guard board belongs to prior art; Tail boom has the plate that can stretch in (5), and plate belongs to prior art; Front-axle beam (2) and back timber (3) are hinged on jack (7) two ends respectively, can make front-axle beam (2) and back timber (3) form proper angle according to this; Caving shield (4) and tail boom (5) are hinged on swing jack (8) two ends respectively, can make tail boom (5) swing than wide-angle according to this; Bottom of the present utility model is hinged with base (10) and planker (11) from front to back; Base (10) front part sides has both sides, two hydraulic props (12) middle part that two hydraulic props (13) are arranged, and all hydraulic pillar top and back timber (3) bottom and base (10) are hinged; Welding powerful pedestal (14) at base (10) postmedian; At powerful pedestal (14) upper articulation Y shape pole (15) and pole (16) are arranged; Y shape pole (15), pole (16) top are hinged with caving shield (4) again; Thereby form high stability four link supports mechanisms by powerful pedestal (14), Y shape pole (15), pole (16) and caving shield (4).

Claims

1, a kind of high stability low caving coal hydraulic support comprises front-axle beam (2), back timber (3), caving shield (4), tail boom (5), base (10), pillar (12), (13), powerful pedestal (14), it is characterized in that:

A. the articulated front-axle beam (2) that has side guard board (6) of back timber (3) front end;

B. the powerful pedestal (14) on the base (10) is connected by Y type pole (15), pole (16) with caving shield (4), forms four link supports mechanisms;

C. caving shield and tail boom are hinged on the two ends of swing jack (8) respectively.