CN219570131U

CN219570131U - Novel shield type hydraulic support for coal face

Info

Publication number: CN219570131U
Application number: CN202320901077.0U
Authority: CN
Inventors: 崔亚军; 郭在云; 邓雁; 冯富贵; 陈智刚
Original assignee: Yunnan Vocational Institute Of Energy Technology
Current assignee: Yunnan Vocational Institute Of Energy Technology
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-08-22
Anticipated expiration: 2033-04-20

Abstract

The utility model discloses a novel shield type hydraulic support for a coal face, which comprises a top beam, a shield beam and a base, wherein two adjusting jacks are hinged at the rear end of the top beam, the lower ends of the adjusting jacks are connected with the upper ends of the shield beam, the lower ends of the shield beam are sequentially hinged with a front connecting rod and a rear connecting rod from front to back, the lower ends of the front connecting rod and the rear connecting rod are both hinged with the base, two sides of the base in front of the front connecting rod are respectively hinged with a hydraulic upright post, the upper ends of the hydraulic upright posts are hinged with the top beam, the front part of the base is provided with a displacement jack, the end part of a piston rod of each displacement jack is provided with a connecting piece, and each adjusting jack, each hydraulic upright post and each displacement jack are of an independently telescopic structure. The utility model has the advantages of convenient frame moving, good adaptability, production cost reduction and obvious economic and social values.

Description

Novel shield type hydraulic support for coal face

Technical Field

The utility model relates to the technical field of coal mining, in particular to a novel shield type hydraulic support for a coal face.

Background

Along with the continuous increase of mining depth and mining intensity, in the coal mining process of a coal mining working face, the technical conditions of mine mining are more complex, the problems of roof softness, floor softness and coal seam softness are gradually highlighted, and in order to prevent roof caving, a certain working space is maintained, the safety of workers and the normal operation of each work are ensured, and the roof must be supported. The traditional supporting method that single hydraulic prop is matched with metal top beam has a plurality of disadvantages: the supporting strength is low, and the roof at the safety exit of the working face is easy to sink; the supporting speed is low, so that the propelling speed of the coal face is restricted, and the high yield and high efficiency of the fully mechanized face are difficult to realize; the supporting and withdrawing are frequent, and all the supporting and withdrawing are manual, so that the labor intensity of workers is high, the use cost is high, and the danger coefficient is high. In order to avoid the problems, a shield type hydraulic support is adopted for supporting, the hydraulic support takes high-pressure liquid as power, and the hydraulic support is equipment for supporting and controlling a top plate, which consists of a hydraulic element and a metal member, and can realize a whole set of working procedures such as supporting, roof cutting, frame moving, conveyor pushing and the like.

However, the following problems also exist during the use of the shield hydraulic support: firstly, because the whole bracket is heavy, the bracket is difficult to move, and time and labor are wasted; secondly, mine exploitation conditions are complex, the condition that the roof is uneven can be frequently met, the top beams of most supports at present only swing up and down along the pin shafts at the rear ends of the top beams, the adaptability is low, when the roof is uneven in other directions, the top beams can only be attached to the roof at one side due to the fact that the angle of the top beams cannot be adjusted in other directions, huge bending moment and torque can be generated on the top beams, and in order to bear the bending moment and torque, the strength and rigidity of the whole support are required to be increased, and then the production cost of the support is increased. Therefore, the development of the novel shield hydraulic support for the coal face, which is convenient to move and good in adaptability and can reduce the production cost, is objectively needed.

Disclosure of Invention

The utility model aims to provide a novel shield type hydraulic support for a coal face, which is convenient to move, good in adaptability and capable of reducing production cost.

The utility model aims at realizing the purposes, and the hydraulic support comprises a top beam, a shield beam and a base, wherein the rear end of the top beam is hinged with two adjusting jacks, the lower ends of the adjusting jacks are connected with the upper end of the shield beam, the lower ends of the shield beam are sequentially hinged with a front connecting rod and a rear connecting rod from front to back, the lower ends of the front connecting rod and the rear connecting rod are both hinged with the base, two sides of the base in front of the front connecting rod are respectively hinged with a hydraulic upright post, the upper ends of the hydraulic upright posts are hinged with the top beam, the front part of the base is provided with a displacement jack, the end parts of piston rods of the displacement jack are provided with connecting pieces, and each adjusting jack, each hydraulic upright post and each displacement jack are of an independently telescopic structure.

Further, the top beam and the shield beam are both box-shaped structures.

Further, one side of the top beam and the shield beam is provided with a side guard plate with the same structure, the cross section of the side guard plate is L-shaped, the horizontal part of the side guard plate is positioned below the top beam, a hollow pipe is fixed in the top beam, a movable rod is movably inserted in the hollow pipe, a limiting plate is arranged at the inner end of the movable rod after the inner end extends out of the hollow pipe, an end plate is arranged at the outer end of the movable rod after the outer end sequentially extends out of the hollow pipe and the top beam, the end plate is fixed with the side guard plate, and a spring is arranged on the movable rod between the outer end of the hollow pipe and the end plate.

Further, a plurality of reinforcing plates are arranged on the base in parallel along the length direction of the base, and the lower ends of the front connecting rod and the rear connecting rod are hinged with the reinforcing plates through a hinge piece.

Further, two sides of the base are provided with transverse moving jacks.

Further, four corners of the base are respectively provided with a vertical frame, vertical holes are processed on the base below the vertical frames, idler wheels are arranged in the vertical holes, lifting hydraulic cylinders are arranged on the vertical frames, and the end parts of piston rods of the lifting hydraulic cylinders are connected with the idler wheels.

The utility model is used for supporting a roof of a coal face, in actual coal mining work, a scraper conveyor for conveying coal is arranged below a top beam, after the bracket is installed, the bracket is connected with the scraper conveyor through a connecting piece, when the bracket needs to move, a fixing device of the scraper conveyor is firstly loosened, then a displacement jack is started, at this time, the whole bracket is in a supporting and fixing state, a piston rod of the displacement jack extends to prop against the scraper conveyor and push the scraper conveyor to move forward to a designated position to fix the scraper conveyor, a hydraulic upright post and an adjusting jack are contracted, the height of the top beam is reduced so as to move conveniently, the displacement jack is started again to shrink the piston rod of the displacement jack, at this time, the scraper conveyor is in a fixing state, and the whole bracket can be pulled to move forward in the direction of the scraper conveyor, so that the whole operation process is implemented mainly through the displacement jack, and the whole operation process is convenient and fast; secondly, the hydraulic support can realize the up-and-down swing of the top beam through the expansion and contraction of the hydraulic upright posts on the one hand, and on the other hand, because the top beam is hinged with the two hydraulic upright posts and the two adjusting jacks respectively, and the hydraulic upright posts and the adjusting jacks are of structures capable of independently expanding and running, the inclination of the top beam in any direction can be realized only by coordinately controlling the expansion and contraction heights of the two hydraulic upright posts and the two adjusting jacks, so that the requirement of uneven top plate is met, the adaptability of the top beam is improved, the top beam can be tightly attached to the top plate, the supporting strength is higher, the safety is better, huge bending moment and torque between each part of the support can be avoided, the extra increase of the strength and the rigidity of the whole support is further avoided, and the weight and the production cost of the support are reduced. The utility model has the advantages of convenient frame moving, good adaptability, production cost reduction and obvious economic and social values.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;

FIG. 3 is a schematic view of a side guard 10 according to the present utility model;

in the figure: the hydraulic scraper comprises a top beam 1, a shield beam 2, a base 3, an adjusting jack 4, a front connecting rod 5, a rear connecting rod 6, a hydraulic column 7, a displacement jack 8, a connecting piece 9, a side guard plate 10, a hollow tube 11, a moving rod 12, a limiting plate 13, a limiting plate 14, an end plate 15, a spring 16, a reinforcing plate 17, a traversing jack 18, an upright frame 19, a roller 20, a lifting hydraulic cylinder 21 and a scraper conveyor.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings, without limiting the utility model in any way, and any alterations or modifications based on the utility model are within the scope of the utility model.

As shown in fig. 1 to 3, the utility model comprises a top beam 1, a shield beam 2 and a base 3, wherein two adjusting jacks 4 are hinged at the rear end of the top beam 1, the lower ends of the adjusting jacks 4 are connected with the upper end of the shield beam 2, the lower ends of the shield beam 2 are sequentially hinged with a front connecting rod 5 and a rear connecting rod 6 from front to back, the lower ends of the front connecting rod 5 and the rear connecting rod 6 are hinged with the base 3, two hydraulic upright posts 7 are respectively hinged at two sides of the base 3 in front of the front connecting rod 5, the upper ends of the hydraulic upright posts 7 are hinged with the top beam 1, the front part of the base 3 is provided with a displacement jack 8, the end part of a piston rod of the displacement jack 8 is provided with a connecting piece 9, the connecting piece 9 is of an existing connecting structure and is used for being connected with a scraper conveyor 21, and in order to facilitate assembly and disassembly, each adjusting jack 4, the hydraulic upright posts 7 and the displacement jack 8 are of a structure which can be independently telescopic and are communicated with an emulsion pump station through an inlet and outlet liquid jack.

The utility model is used for supporting the roof of the coal face, in the actual coal mining work, a scraper conveyor 21 for conveying coal is arranged below a top beam 1, after the bracket is installed, the bracket is connected with the scraper conveyor 21 through a connecting piece 9, when the bracket needs to move, a fixing device of the scraper conveyor 21 is firstly loosened, then a displacement jack 8 is started, at the moment, the whole bracket is in a supporting and fixing state, a piston rod of the displacement jack 8 can be stretched to prop the scraper conveyor 21 and push the scraper conveyor 21 to move forward to a designated position, the scraper conveyor 21 is fixed, a hydraulic upright post 7 and an adjusting jack 4 are contracted, the height of the top beam 1 is reduced, the displacement jack 8 is started again to enable a piston rod of the scraper conveyor to shrink, at the moment, the scraper conveyor 21 is in a fixing state, the whole bracket can be pulled to move forward in the direction of the scraper conveyor 21, and then the moving frame of the hydraulic bracket is completed, and the movement of the scraper conveyor and the bracket is completed quickly through the mutual matching of the bracket and the bracket; secondly, the hydraulic support can realize the up-and-down swing of the top beam 1 through the expansion and contraction of the hydraulic upright posts 7 on the one hand, and on the other hand, as the top beam 1 is hinged with the two hydraulic upright posts 7 and the two adjusting jacks 4 respectively, and the hydraulic upright posts 7 and the adjusting jacks 4 are of structures capable of independently expanding and contracting, the inclination of the top beam 1 in any direction can be realized only by coordinately controlling the expansion and contraction heights of the two hydraulic upright posts 7 and the two adjusting jacks 4, so that the requirement of uneven top plates is met, the adaptability of the top beam 1 is improved, the top beam 1 can be tightly attached to the top plates, the supporting strength is higher, the safety is better, huge bending moment and torque can be avoided from being generated between each part of the support, the additional increase of the strength and the rigidity of the whole support is avoided, and the weight and the production cost of the support are reduced.

Preferably, the top beam 1 and the shield beam 2 are box-shaped structures, and have the advantages of high strength and rigidity, convenience in maintenance and use and the like.

The side guard plates 10 with the same structure are arranged on one sides of the top beam 1 and the shield beam 2, the cross section of each side guard plate 10 is L-shaped, the horizontal part of each side guard plate 10 is positioned below the top beam 1, a hollow pipe 11 is fixed in the top beam 1, a movable rod 12 is movably inserted in the hollow pipe 11, a limiting plate 13 is arranged at the inner end of the movable rod 12, an end plate 14 is arranged at the outer end of the movable rod 12, and a spring 15 is arranged on the movable rod 12 between the outer end of the hollow pipe 11 and the end plate 14. According to actual conditions, a plurality of hydraulic supports are arranged on a coal face side by side, a certain gap is usually reserved between two adjacent hydraulic supports, gangue, sand and the like on a top plate fall from the gap in the coal exploitation process, safety of underground workers is threatened, a side guard 10 is arranged for avoiding the problems, when the coal face side guard is used, the side guard 10 stretches out outwards under the action of a spring, the vertical part of the side guard 10 can prop against the side walls of the adjacent support top beams 1 and the shield beams 2, when objects such as gangue or sand and the like fall, the gangue or sand and the like can fall on the horizontal part of the side guard 10, and then the gangue or sand and the sand are blocked in a working space, so that the working space is not blocked, and safety of the workers is ensured.

Be provided with a plurality of reinforcing plates 16 on the base 3, the length direction of reinforcing plates 16 is parallel with the length direction of base 3, and the lower extreme of preceding connecting rod 5 and back connecting rod 6 passes through the articulated elements and articulates with reinforcing plates 16, and reinforcing plates 16 can improve the rigidity and the intensity of base 3 by a wide margin, prevent the deformation of base 3, improve the life of base 3, when actual implementation, can also set up the gusset between reinforcing plates 16 and base 3, further improve the fastness of base 3.

The two sides of the base 3 are provided with the transverse moving jack 17, when the whole bracket needs to be transversely moved, the transverse moving jack 17 can be started, the transverse moving jack 17 props against a fixed object on the outer side of the bracket, and the aim of transversely moving the bracket can be fulfilled.

The four corners of the base 3 are respectively provided with a vertical frame 18, vertical holes are formed in the base 3 below the vertical frames 18, idler wheels 19 are arranged in the vertical holes, lifting hydraulic cylinders 20 are arranged on the vertical frames 18, the end parts of piston rods of the lifting hydraulic cylinders 20 are connected with the idler wheels 19, when a hydraulic support needs to be moved, the lifting hydraulic cylinders 20 can be started, the piston rods of the lifting hydraulic cylinders 20 extend to drive the idler wheels 19 to move downwards, then the four idler wheels 19 land, and the whole hydraulic support is lifted.

Claims

1. The novel shield type hydraulic support for the coal face comprises a top beam (1), a shield beam (2) and a base (3), and is characterized in that two adjusting jacks (4) are hinged to the rear end of the top beam (1), the lower ends of the adjusting jacks (4) are connected with the upper ends of the shield beam (2), the lower ends of the shield beam (2) are sequentially hinged to a front connecting rod (5) and a rear connecting rod (6) from front to back, the lower ends of the front connecting rod (5) and the rear connecting rod (6) are hinged to the base (3), two hydraulic upright posts (7) are hinged to the two sides of the base (3) in front of the front connecting rod (5), the upper ends of the hydraulic upright posts (7) are hinged to the top beam (1), the front portions of the base (3) are provided with displacement jacks (8), and the piston rod ends of the displacement jacks (8) are provided with connecting pieces (9), and each adjusting jack (4), the hydraulic upright posts (7) and the displacement jacks (8) are of an independent telescopic structure.

2. A novel shield hydraulic support for a coal face according to claim 1, wherein the top beam (1) and the shield beam (2) are both box-shaped structures.

3. The novel shield hydraulic support for the coal face is characterized in that side shields (10) with the same structure are arranged on one sides of a top beam (1) and a shield beam (2), the cross section of each side shield (10) is L-shaped, the horizontal part of each side shield (10) is located below the top beam (1), a hollow tube (11) is fixed in the top beam (1), a movable rod (12) is movably inserted in the hollow tube (11), a limiting plate (13) is arranged after the inner end of the movable rod (12) extends out of the hollow tube (11), an end plate (14) is arranged after the outer end of the movable rod extends out of the hollow tube (11) and the top beam (1) in sequence, the end plate (14) is fixed with the side shields (10), and a spring (15) is arranged on the movable rod (12) between the outer end of the hollow tube (11) and the end plate (14).

4. The novel shield hydraulic support for the coal face, as set forth in claim 1, characterized in that the base (3) is provided with a plurality of reinforcing plates (16), the length direction of the reinforcing plates (16) is parallel to the length direction of the base (3), and the lower ends of the front connecting rod (5) and the rear connecting rod (6) are hinged with the reinforcing plates (16) through a hinge.

5. The novel shield hydraulic support for the coal face according to claim 1, wherein traversing jacks (17) are arranged on two sides of the base (3).

6. The novel shield type hydraulic support for the coal face, which is claimed in claim 1, is characterized in that four corners of the base (3) are respectively provided with a vertical frame (18), vertical holes are formed in the base (3) below the vertical frames (18), rollers (19) are arranged in the vertical holes, lifting hydraulic cylinders (20) are arranged on the vertical frames (18), and piston rod ends of the lifting hydraulic cylinders (20) are connected with the rollers (19).