Connecting box of forepoling upper top plate

Abstract

The utility model discloses a connecting box of a forepoling upper top plate, and belongs to the technical field of forepoling devices under mines. A top beam is arranged at the middle position of the lower side end surface of the main top plate; supporting back plates are arranged on the front side and the rear side of the top beam respectively. A column nest is formed in the supporting back plate, and a connecting lug plate is arranged at the position, corresponding to the supporting back plate, of the top beam. Extension beams are further arranged on the front end side and the rear end side of the top beam; a movable beam is rotatably mounted on the extension beam on the front side of the top beam; a front jack capable of controlling the rotating angle of the movable beam is further installed between the extension beam and the movable beam in a hinged mode. A positioning lug plate is arranged on the extension beam, and the movable beam and the extension beam are hinged at the positioning lug plate through a pin shaft; an auxiliary lug plate for mounting a connecting rod is also arranged in the middle of the top beam; the box girder structure solves the problem that a single-group vertical frame arranged in the middle of a roadway in a matched mode and a box girder structure capable of providing an effective supporting effect on the top of the roadway through a top plate are lacked currently.

Description

Technical Field

[0001] The utility model relates to the technical field of advanced support devices under mines, in particular to a connection box for an advanced support upper roof. Background Art

[0002] As the coal mining face continues to advance, the pressure in the advance section of the tunnel moves forward, so it is necessary to strengthen the support in the advance section at the working face exit; the advance support in the tunnel is a support method used to prevent the tunnel surrounding rock from deformation, movement or damage caused by the superposition of the advance support pressure of the working face and the support pressure along the inclined direction; most of the currently commonly used advance support structures are similar to the patent documents disclosed in application numbers "2009100109003" or "2007101853158", that is, two sets of frames are used to provide support for the upper beams and plates; and in order to adapt to the current underground working environment, the applicant needs to design a method that only uses a single set of frames arranged in the middle of the tunnel, and based on this, it is necessary to design a top support beam structure. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a connection box for advanced support of the upper roof, so as to solve the problem of the current lack of a box beam structure that can provide effective support effect to the top of the tunnel through the roof by cooperating with a single set of vertical frames set in the middle of the tunnel.

[0004] In order to solve the above problems, the present invention provides the following technical solutions:

[0005] A connection box for an advance support upper top plate; it comprises a main top plate: a top beam is provided at a middle position of the lower end face of the main top plate; support back plates are respectively provided on the front and rear sides of the top beam; column sockets are provided on the support back plates, and connecting ear plates are provided on the top beam at positions corresponding to the support back plates; extension beams are also provided on the front and rear end sides of the top beam; a movable beam is rotatably mounted on the extension beam located at the front side of the top beam; a front jack capable of controlling the rotation angle of the movable beam is hingedly mounted between the extension beam and the movable beam; a positioning ear plate is provided on the extension beam, and the movable beam and the extension beam are hinged at the positioning ear plate by a pin shaft; an auxiliary ear plate for mounting a connecting rod is also provided in the middle of the top beam.

[0006] Preferably, the top beam is a box-shaped structure with a hollow interior; the top beam includes a pair of longitudinal vertical plates arranged along the length direction of the main top plate; a number of transverse partitions are arranged between the longitudinal vertical plates; a cover plate is also provided on the longitudinal vertical plates; and a grid-shaped reinforcement plate is also provided in the inner cavity of the top beam.

[0007] Furthermore, two groups of limiting support plates are provided between the two longitudinal vertical plates; the supporting back plate is provided in the area sandwiched by the main top plate, the longitudinal vertical plates and the limiting support plates.

[0008] Preferably, several side positioning plates and oblique rib plates are provided between the outer side wall of the top beam and the main top plate; one end of the oblique rib plate is connected to the outer side wall of the top beam, and the other end is provided on the main top plate near its side edge; the side end faces of the side positioning plates and the oblique rib plates are attached to each other, and the side positioning plates and the oblique rib plates are staggered with each other.

[0009] Preferably, the top beam and the extension beam are an integrated structure, and the widths of the two are the same.

[0010] Preferably, the structures of the extension beam and the movable beam are similar to those of the top beam, both of which are box-type structures with hollow interiors; there are two positioning ear plates, and through holes are opened on the tail of the extension beam and the positioning ear plates. The tail of the extension beam is inserted between the two positioning ear plates and is hinged to the positioning ear plates at the through holes through a pin shaft.

[0011] Preferably, the height of the extension beam and the movable beam are consistent, and the height is smaller than the height of the top beam; the lower top surface of the extension beam is a slope inclined toward the main top plate; the positioning ear plate is arranged at a step position on the upper top surface of the extension beam close to the top beam; a T-shaped rib plate is arranged in the middle of the movable beam; a positioning ear plate is also arranged on the T-shaped rib plate; the two positioning ear plates are of the same height, and the two ends of the front jack are respectively installed on the positioning ear plates corresponding to the extension beam and the movable beam.

[0012] Preferably, a front top plate is provided on the top of the movable beam; the front side of the front top plate is a downwardly inclined folding plate structure, and the width of the folding plate is smaller than the width of the front top plate; a grid-shaped reinforcing rib plate is also provided between the front top plate and the movable beam.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a new connecting beam box, which uses the main top plate as the upper covering plate of the top beam, and arranges a supporting back plate on the top beam, and uses the column sockets on the supporting back plate as positioning ports of hydraulic telescopic columns; the utility model also provides a rotatable movable beam as support for the front top guard plate, specifically, extension beams are respectively arranged on the front and rear end sides of the top beam, so that the movable beam and the extension beam are hinged through a pin shaft, and a front jack is arranged between the movable beam and the extension beam to provide power; it has a simple structure, a reliable positioning and supporting effect, and can provide an effective support effect for the top plate under the current single-bracket structure in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the utility model in an embodiment;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle device after the front jack, movable beam and front top plate are removed;

[0017] Figure 3 yes Figure 2 Top view of the middle device after removing the cover;

[0018] Figure 4 yes Figure 1 A top view of the central device with the cover and side locating plates removed;

[0019] Explanation of the accompanying reference numerals: 1. Main top plate, 1A. Support back plate, 2. Top beam, 2A. Longitudinal vertical plate, 2B. Transverse partition, 2C. Cover plate, 2D. Limit support plate, 3. Extension beam, 4. Movable beam, 5. Front jack, 6. Positioning ear plate, 7. Auxiliary ear plate, 8. Positioning plate, 9. Diagonal rib plate, 10. Front top plate. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] Example:

[0022] Reference Figure 1 , this embodiment provides a connection box for an advance support upper top plate; it includes a main top plate 1: a top beam 2 is provided at the middle position of the lower end surface of the main top plate 1; support back plates 1A are respectively provided on the front and rear sides of the top beam 2; a column socket is opened on the support back plate 1, which is used to cooperate with the hydraulic telescopic column for positioning; and a connecting ear plate is provided on the top beam 2 at the position corresponding to the support back plate 1A; an extension beam 3 is also provided on the front and rear end sides of the top beam 2; a movable beam 4 is rotatably installed on the extension beam 3 located on the front side of the top beam 2; a front jack 5 that can control the rotation angle of the movable beam 4 is also hingedly installed between the extension beam 3 and the movable beam 4; a positioning ear plate 6 is provided on the extension beam 3, and the movable beam 3 and the extension beam 3 are hinged at the positioning ear plate 6 by a pin; an auxiliary ear plate 7 for installing a connecting rod is also provided in the middle of the top beam 2.

[0023] The top beam 2 is a hollow, box-shaped structure. It includes a pair of longitudinal uprights 2A arranged along the length of the main roof panel 1. Several transverse partitions 2B are positioned between the longitudinal uprights 2A. A cover plate 2C covers the longitudinal uprights 2A. A grid-like reinforcement plate is also installed within the interior of the top beam 2. In this application, the cover plate 2C is also equipped with a lifting ring for use with a crane.

[0024] Two sets of limiting support plates 2D are positioned between the two longitudinal uprights 2A; the support back panel 1A is located within the area sandwiched between the main top panel 1, the longitudinal uprights 2A, and the limiting support plates 2D. In this embodiment, the limiting support plates located at the location of a single support back panel are two inclined plate members, forming an "eight"-shaped structure with a smaller upper portion and a larger lower portion. The two longitudinal uprights corresponding to the support back panel 1A are also equipped with support lugs for mounting hydraulic telescopic columns.

[0025] Several side positioning plates 8 and oblique rib plates 9 are also arranged between the outer side wall of the top beam 2 and the main top plate 1; one end of the oblique rib plate 9 is connected to the outer side wall of the top beam 2, and the other end is arranged on the main top plate 1 near its side edge; the side end surfaces of the side positioning plates 8 and the oblique rib plates 9 are attached to each other, and the side positioning plates 7 and the oblique rib plates 8 are staggered with each other.

[0026] The top beam 2 and the extension beam 3 are an integrated structure, and both have the same width.

[0027] The structures of the extension beam 3 and the movable beam 4 are similar to those of the top beam 2, both of which are box-type structures with hollow interiors; there are two positioning ear plates 6, and through holes are opened on the tail of the extension beam 3 and the positioning ear plates. The tail of the extension beam 3 is inserted between the two positioning ear plates 6 and is hinged to the positioning ear plates 6 at the through holes through a pin shaft.

[0028] The heights of the extension beam 3 and the movable beam 4 are consistent, and are smaller than the height of the top beam 2; the lower top surface of the extension beam 3 is a slope inclined toward the main top plate 1; the positioning ear plate 6 is arranged at a step position on the upper top surface of the extension beam 3 close to the top beam 2; a T-shaped rib plate is provided in the middle of the movable beam 1; a positioning ear plate 6 is also provided on the T-shaped rib plate; the two positioning ear plates 6 are of the same height, and the two ends of the front jack 5 are respectively installed on the positioning ear plates 6 corresponding to the extension beam 3 and the movable beam 4.

[0029] A front top plate 10 is located on top of the movable beam 4. The front side of the front top plate 10 is a downwardly inclined folded plate structure, and the width of the folded plate is smaller than that of the front top plate 10. A grid-like reinforcing rib is also located between the front top plate 10 and the movable beam 4. In this embodiment, the top beam and main top plate are integrally structured, and the front top plate and the movable beam are also integrally structured.

Claims

1. A connection box for an advanced support upper roof, comprising a main roof (1), characterized in that: A top beam (2) is provided at the middle position of the lower end surface of the main top plate (1); support back plates (1A) are provided on the front and rear sides of the top beam (2); a column socket is provided on the support back plate (1), and a connecting ear plate is provided at a position corresponding to the support back plate (1A) on the top beam (2); an extension beam (3) is also provided on the front and rear end sides of the top beam (2); a movable beam (4) is rotatably mounted on the extension beam (3) located on the front side of the top beam (2); a front jack (5) capable of controlling the rotation angle of the movable beam (4) is also hingedly mounted between the extension beam (3) and the movable beam (4); a positioning ear plate (6) is provided on the extension beam (3), and the movable beam (3) and the extension beam (3) are hingedly connected at the positioning ear plate (6) through a pin shaft; and an auxiliary ear plate (7) for mounting a connecting rod is also provided in the middle of the top beam (2).

2. The connection box for the advanced support upper roof according to claim 1, characterized in that: The top beam (2) is a box-shaped structure with a hollow interior; the top beam (2) comprises a pair of longitudinal vertical plates (2A) arranged along the length direction of the main top plate (1); a plurality of transverse partitions (2B) are arranged between the longitudinal vertical plates (2A); a cover plate (2C) is also provided on the longitudinal vertical plates (2A); and a grid-shaped reinforcement plate is also provided in the inner cavity of the top beam (2).

3. The connection box for the advanced support upper roof according to claim 2, characterized in that: Two groups of position-limiting support plates (2D) are also provided between the two longitudinal upright plates (2A); the supporting back plate (1A) is provided in the area sandwiched by the main top plate (1), the longitudinal upright plates (2A) and the position-limiting support plates (2D).

4. The connection box for the advanced support upper roof according to claim 1, characterized in that: A plurality of side positioning plates (8) and oblique rib plates (9) are further provided between the outer side wall of the top beam (2) and the main top plate (1); one end of the oblique rib plate (9) is connected to the outer side wall of the top beam (2), and the other end is provided on the main top plate (1) near its side edge; the side end surfaces of the side positioning plates (8) and the oblique rib plates (9) are in contact with each other, and the side positioning plates (7) and the oblique rib plates (8) are arranged in an interlaced manner.

5. The connection box for the advanced support upper roof according to claim 1, characterized in that: The top beam (2) and the extension beam (3) are an integrated structure, and both have the same width.

6. The connection box for the advanced support upper roof according to claim 1, characterized in that: The structures of the extension beam (3) and the movable beam (4) are similar to those of the top beam (2), and are both box-shaped structures with a hollow interior. There are two positioning ear plates (6), and through holes are opened on the tail of the extension beam (3) and the positioning ear plates. The tail of the extension beam (3) is inserted between the two positioning ear plates (6) and is hinged to the positioning ear plates (6) at the through holes through a pin shaft.

7. The connection box for the advanced support upper roof according to claim 1, characterized in that: The extension beam (3) and the movable beam (4) have the same height, and the height is smaller than the height of the top beam (2); the lower top surface of the extension beam (3) is a slope inclined toward the main top plate (1); the positioning ear plate (6) is arranged at a step position on the upper top surface of the extension beam (3) close to the top beam (2); a T-shaped rib plate is arranged in the middle of the movable beam (1); a positioning ear plate (6) is also arranged on the T-shaped rib plate; the two positioning ear plates (6) are of the same height, and the two ends of the front jack (5) are respectively installed on the positioning ear plates (6) arranged on the extension beam (3) and the movable beam (4) corresponding to each other.

8. The connection box for the advanced support upper roof according to claim 1, characterized in that: A front top plate (10) is provided on the top of the movable beam (4); the front side of the front top plate (10) is a downwardly inclined folding plate structure, and the width of the folding plate is smaller than the width of the front top plate (10); and a grid-shaped reinforcing rib plate is also provided between the front top plate (10) and the movable beam (4).

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