Self-moving forepoling used under mine

Abstract

The invention discloses a self-moving forepoling used under a mine, and belongs to the technical field of supporting devices under the mine. The device comprises a supporting top plate, a top beam seat, two hydraulic telescopic stand columns, a connecting rod, a bottom beam seat and a pressure-bearing bottom plate, the supporting top plate, the top beam seat, the bottom beam seat and the pressure-bearing bottom plate are sequentially arranged from top to bottom, the connecting rod comprises an upper connecting rod piece, a front connecting rod piece and a rear connecting rod piece, the top of the upper connecting rod piece is hinged to the top beam seat, and the upper portion of the front connecting rod piece and the upper portion of the rear connecting rod piece are hinged to the tail of the upper connecting rod piece; the lower part is hinged to the bottom beam seat; the two hydraulic telescopic stand columns are arranged at the positions, corresponding to the front end and the rear end, of the top beam base and the bottom beam base correspondingly. The problems that advance support equipment capable of reducing the space occupancy rate in a roadway on the premise that the support effect is not reduced and the operation difficulty is reduced are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of underground mine support devices, and in particular to a self-moving advanced support for underground mines. Background Art

[0002] As the coal mining face continues to advance, the pressure in the advanced section of the tunnel moves forward, so it is necessary to strengthen the support in the advanced section of the working face exit; the advanced support in the tunnel is a support method used to prevent the deformation, movement or destruction of the tunnel surrounding rock caused by the superposition of the advanced support pressure of the working face and the support pressure along the inclined direction; most of the currently commonly used advanced support structures are similar to the patent documents disclosed in the application numbers "2009100109003" or "2007101853158", that is, two sets of frames are used to provide support for the top beams and slabs; and in order to adapt to the current underground working environment, it is necessary to design a new self-moving advanced support structure to reduce the occupancy rate of the space in the tunnel while ensuring the support effect, reduce the operation difficulty and work intensity, and improve the recovery efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a self-moving advance support for underground mines, so as to solve the current problem of lack of advance support equipment that can reduce the space occupancy rate in the tunnel without reducing the support effect, while reducing the difficulty of operation.

[0004] To solve the above problems, the present invention provides the following technical solutions: A self-moving advance support for underground mines; it includes a support top plate, a top beam seat, two hydraulic telescopic columns, a connecting rod, a bottom beam seat and a pressure-bearing bottom plate; The supporting roof is arranged on the upper top of the top beam seat; the supporting roof comprises a main roof in a rectangular plate structure; a plurality of side roofs are rotatably mounted on the left and right ends of the main roof along its width; a plurality of side jacks are movably mounted between the side roof and the main roof; a front roof is rotatably mounted on the front side of the main roof; The top beam seat comprises a main top beam arranged on the lower side end surface of the main top plate; the main top beam is arranged in the middle position of the main top plate along the length direction thereof; a movable beam is hingedly installed at the front end of the main top beam; the top of the movable beam is attached to the front top plate; the two ends of the side jack are respectively; the front jack is movably installed on the main top beam and the movable beam; the side jack and the front jack can respectively drive the side jack and the front top plate to rotate relative to the main top plate; a lower lug plate is also arranged at the middle part of the main top beam near the front end; a hinge pin is arranged on the lower lug plate; The pressure-bearing bottom plate includes a flat central support platform; trapezoidal platforms are arranged on the front and rear sides of the central support platform; one side of the long bottom of the trapezoidal platform is connected to the central support platform, and the extended end of the trapezoidal platform is a ship-shaped structure with a larger upper part and a smaller lower part; The bottom beam seat includes a pair of vertical plates arranged on the central support platform; the vertical plates are arranged in the middle position of the central support platform along the length direction thereof; push seats are arranged at the front and rear end sides between the two vertical plates; a push jack is installed on the push seat; an upper lug plate is also arranged at the middle part of the two vertical plates near the front end; hinge pins are arranged at the middle part of the two vertical plates and the upper lug plate; The connecting rod comprises an upper connecting rod, a front connecting rod and a rear connecting rod; positioning holes are provided at the front side, the rear side and the middle position close to the rear side of the upper connecting rod; positioning holes are also provided at the upper and lower end sides of the front connecting rod and the rear connecting rod; hinge pins are provided at the two positioning holes located at the rear of the upper connecting rod; the front connecting rod and the rear connecting rod are rotatably connected to the hinge pin on the upper connecting rod through the positioning holes at the upper top end; the length of the front connecting rod is greater than that of the rear connecting rod; the upper connecting rod is rotatably connected to the hinge pin on the lower lug plate through the positioning holes on the front side thereof; the front connecting rod and the rear connecting rod are rotatably connected to the lug plate and the hinge pin in the middle of the vertical plate through the positioning holes on the lower end sides thereof; The two hydraulic telescopic columns have consistent size specifications; a pair of supporting back plates are arranged at the front and rear end sides of the main top beam and the vertically opposite positions of the vertical plate; the bottom end and the extended end of the hydraulic telescopic support are correspondingly installed at the position of the supporting back plate.

[0005] At least two connecting ribs are arranged on the end plane of the side wing top plate; the connecting ribs extend along the width direction of the side wing top plate; a side ear plate is arranged at the position corresponding to the connecting rib plate on the main top plate; one end of the side ear plate extends outward, and a positioning hole is opened at the relative position of the side ear plate and the connecting rib plate; the main top plate and the connecting rib plate are hinged on the positioning hole through a positioning pin; the side wing top plate is also a rectangular plate structure; functional through holes are arranged at the four corners of the side wing top plate; two connecting ribs are arranged in the middle of the side wall top plate near the functional through holes The main top beam and the auxiliary ribs are provided at the positions, and reinforcing ribs are arranged between the two connecting ribs and the front and rear ends of the side wall top plates; a plurality of reinforcing longitudinal bars are also arranged between the connecting ribs, and the reinforcing ribs and the reinforcing longitudinal bars are perpendicular to the connecting ribs; an auxiliary rib is arranged in the middle of the side wing top plate; positioning holes are opened on the main top beam and the auxiliary ribs; the two ends of the side jacks are hingedly installed at the positioning holes respectively; the number of side jacks arranged between a single side wing top plate and the main top plate is at least two; and these side jacks and side wing top plates are symmetrically and evenly arranged on the side wing top plates.

[0006] The width of the front top plate is consistent with the total width of the main top plate and the side wing top plates on both sides of the main top plate; 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 rod is also provided on the front top plate.

[0007] The main top beam is a box-shaped structure with a hollow interior; the main 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 covered on the longitudinal vertical plates; a grid-shaped reinforcement plate is also arranged in the inner cavity of the main top beam; two groups of limit support plates are also arranged between the two longitudinal vertical plates; the supporting back plate on the main top beam seat is arranged in the area clamped by the main top plate, the longitudinal vertical plates and the limit support plates, and a cylinder connecting ear plate is also arranged in the clamped area; a number of side positioning plates and oblique rib plates are also arranged between the outer side wall of the main top beam and the main top plate; one end of the oblique rib plate is connected to the outer side wall of the main top beam, and the other end is arranged on the main top plate near its side edge; the side end faces of the side positioning plate and the oblique rib plate are attached to each other, and the side positioning plate and the oblique rib plate are arranged in an interlaced manner.

[0008] The structure of the movable beam is similar to that of the main top beam, both of which are box-type structures with a hollow interior; the height of the movable beam is smaller than that of the main top beam; the side of the main top beam opposite to the movable beam is a slope inclined toward the main top plate; a T-shaped rib plate is provided in the middle of the movable beam; positioning ear plates are provided on the ends of the main top beam and the T-shaped rib plates; the two positioning ear plates are of the same height, and the two ends of the front jack are respectively hingedly mounted on the corresponding positioning ear plates; 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.

[0009] The central support is a rectangular platform with a hollow interior; the rectangular platform includes a bottom plate; side panels are arranged on the left and right side edges of the top end surface of the bottom plate; the bottom of the bottom beam seat is arranged on the bottom plate; a number of cross plates are arranged on the bottom plate in the area between the bottom beam seat and the side panels; the cross plates are arranged along the width direction of the bottom plate, and the cross plates are at the same height as the side panels; a top plate is arranged on the cross plates and the side panels; a number of reinforcing ribs are also arranged between the bottom beam seat and the central support; the reinforcing rib is an L-shaped plate, and its two long sides are respectively attached to the bottom beam seat and the central support; the projections of the reinforcing rib and the cross plate on the bottom plate of the central support coincide with each other.

[0010] The trapezoidal platform is a platform structure with a hollow interior. The contour shapes of the bottom plane and the top plane of the trapezoidal platform are both isosceles trapezoids, and the size of the bottom plane is smaller than that of the top plane.

[0011] A number of transverse partitions are arranged between the vertical plates; the transverse partitions divide the space between the two vertical plates from front to back into a front hydraulic column section, a front connecting rod section, a rear connecting rod section, a transition section and a rear hydraulic column section; the supporting back plate is arranged at the front hydraulic column section and the rear hydraulic column section; a single push seat includes two hollow ear plate platforms placed in parallel; a connecting pin is arranged between the two ear plate platforms, and the push jack is installed on the connecting pin; a group of relatively inclined clamps are arranged on the front hydraulic column section, the rear connecting rod section and the rear hydraulic column section; the clamps form an inverted eight-shaped groove with a larger upper part and a smaller lower part between the vertical plates.

[0012] An auxiliary ear plate is arranged at the position corresponding to the front connecting rod section in the middle part of the vertical plate; connecting rod pads are attached to the side walls of the vertical plate corresponding to the auxiliary ear plate and the rear connecting rod section; the pin shaft is arranged through the connecting rod pad; pressure plates and blocks for installation in conjunction with the hydraulic telescopic support are arranged on the side walls of the vertical plate corresponding to the front hydraulic column section and the rear hydraulic column section; cover plates are also arranged at the positions close to the corresponding push seats on the front hydraulic column section and the rear hydraulic column section, and a cover plate is also arranged on the transition section; a valve group positioning seat is arranged on the cover plate close to the front push seat position.

[0013] The upper connecting rod member includes two side plates arranged opposite to each other; a top plate is arranged at the top position between the two side plates; a distance sleeve is arranged at the front side of the upper connecting rod member; a V-shaped convex plate is also arranged on the top plate at a position corresponding to between the two positioning holes at the tail of the upper connecting rod member; a frame plate for reinforcement is also arranged between the two side plates; one end of the frame plate is connected to the upper and lower positions of the outer wall of the distance sleeve through a joint plate; the front connecting rod member and the rear connecting rod member are similar in shape, and both include a hollow square column designed in the middle, and a distance sleeve arranged at the protruding end of the square column; the distance sleeves on the upper connecting rod member, the front connecting rod member and the rear connecting rod member are all coaxial with the corresponding positioning holes, and their inner tube diameters are larger than the aperture size of the positioning holes.

[0014] The beneficial effects of the present invention are embodied in the following aspects: 1. The advance support bracket is arranged in the middle of the machine lane, in front of the end bracket. The effective working length of a single bracket is greater than 20 meters, and the front and rear brackets are connected by a push jack; 2. The bracket components are simplified, providing a wider base width, which prevents the bracket from tipping over and at the same time improves the support strength of the device; 3. The top beam of the advance support is an integral rigid structure, with a hinged front top plate at the front. The front top plate can be raised 3° and lowered 60° to adapt to the ups and downs of the tunnel top; 4. The side of the top beam is equipped with a side wing top plate, which can be raised 1° and lowered 45° to prevent leakage of gangue between frames; 5. The base of the bracket is an integral rigid structure. The base of the leading bracket is connected to the pushing seat through a pushing jack, so that the bracket can move forward and backward alternately; 6. The front end of the base is designed in the shape of a bow, which can adapt to the ups and downs of the bottom of the tunnel and facilitate the movement of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the inventive device in this embodiment; Figure 2 yes Figure 1 A front view of the device; Figure 3 3D schematic diagram of the supporting top plate and top beam seat in this embodiment; Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure of the device in another viewing angle; Figure 5 yes Figure 3 Bottom view of the device in the middle; Figure 6 yes Figure 3 Schematic diagram of the three-dimensional structure of the middle device after the side wing top plate and side jack are removed; Figure 7 yes Figure 6 Schematic diagram of the three-dimensional structure of the middle device after the front top plate, movable beam and front jack are removed; Figure 8 3D schematic diagram of the bottom beam seat and the pressure-bearing bottom plate in this embodiment; Fig. 9 yes Figure 8 The three-dimensional dismissal diagram of the middle device after removing the upper cover plate of the bottom beam seat; Fig.10 yes Fig. 9 Schematic diagram of the three-dimensional structure of the middle device after removing the push jack, the inner side structure of the vertical plate and the rib plate of the bottom beam seat, and removing the top plate on the pressure bottom plate; Fig.11 This is a schematic diagram of the internal structure of the bottom beam seat after removing a single side vertical plate in this embodiment; Fig.12 3D schematic diagram of the connecting rod in this embodiment; Fig.13 yes Fig.12 A schematic diagram of the three-dimensional structure of the device in another viewing angle; Fig.14 yes Fig.12 A front view of the connecting rod device after the front side baffle is removed; Explanation of the accompanying drawings: 1. Support top plate, 1A. Main top plate, 1B. Side wing top plate, 1C. Side jack, 1D. Front top plate, 2. Top beam seat, 2A. Main top beam, 2B. Movable beam, 2C. Front jack, 2D. Lower lug plate, 3. Hydraulic telescopic column, 4. Connecting rod, 4A. Upper connecting rod, 4B. Front connecting rod, 4C. Rear connecting rod, 5. Bottom beam seat, 5A. Vertical plate, 5B. Push seat, 5C. Push jack, 5D. Upper lug plate, 6. Pressure bottom plate, 6A. Central support platform, 6B. Trapezoidal platform, 7. Support back plate. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: Example: Reference Figure 1 , this embodiment provides a self-moving advance support for underground mines; it includes a support top plate 1, a top beam seat 2, two hydraulic telescopic columns 3, a connecting rod 4, a bottom beam seat 5 and a pressure-bearing bottom plate 6; The supporting roof plate 1 is arranged on the upper top of the top beam seat 2; the supporting roof plate 1 comprises a main roof plate 1A in a rectangular plate structure; a plurality of side wing roof plates 1B are rotatably mounted on the main roof plate 1A along the left and right ends of the width thereof; a plurality of side jacks 1C are movably mounted between the side wing roof plates 1B and the main roof plate 1A; a front roof plate 1D is rotatably mounted on the front side of the main roof plate 1A; The top beam seat 2 includes a main top beam 2A arranged on the lower side end surface of the main top plate 1A; the main top beam 2A is arranged in the middle position of the main top plate 1A along the length direction thereof; a movable beam 2B is hingedly installed at the front end of the main top beam 2A; the top of the movable beam 2B is attached to the front top plate 1D; the two ends of the side jack 1C are respectively; the front jack 2C is movably installed on the main top beam 2A and the movable beam 2B; the side jack 1C and the front jack 2C can respectively drive the side jack 1C and the front top plate 1D to rotate relative to the main top plate 1A; a lower lug plate 2D is also arranged at the middle part of the main top beam 2A near the front end; a hinge pin is arranged on the lower lug plate 2D; The pressure-bearing bottom plate 6 includes a flat central support 6A; a trapezoidal platform 6B is provided at the front and rear sides of the central support 6A; one side of the long bottom of the trapezoidal platform 6B is connected to the central support 6A, and the extended end of the trapezoidal platform 6B is a boat-shaped structure with a larger upper part and a smaller lower part; The bottom beam seat 5 includes a pair of vertical plates 5A arranged on the central support platform 6A; the vertical plates 5A are arranged in the middle position of the central support platform 6A along the length direction thereof; a push seat 5B is arranged at the front and rear ends between the two vertical plates 5A; a push jack 5C is installed on the push seat 5B; an upper lug plate 5D is also arranged at a position near the front end in the middle of the two vertical plates 5A; hinge pins are arranged on the middle of the two vertical plates 5A and the upper lug plate 5D; The connecting rod 4 includes an upper connecting rod member 4A, a front connecting rod member 4B and a rear connecting rod member 4C; positioning holes are provided at the front side, the rear side and the middle position close to the rear side of the upper connecting rod member 4A; positioning holes are also provided at the upper and lower end sides of the front connecting rod member 4B and the rear connecting rod member 4C; hinge pins are provided at the two positioning holes located at the rear end of the upper connecting rod member 4A; the front connecting rod member 4B and the rear connecting rod member 4C are rotatably connected to the hinge pin on the upper connecting rod member 4A through the positioning holes at the upper top end; the length of the front connecting rod member 4B is greater than that of the rear connecting rod member 4C; the upper connecting rod member 4A is rotatably connected to the hinge pin on the lower lug plate 2D through the positioning holes on its front side; the front connecting rod member 4B and the rear connecting rod member 4C are rotatably connected to the lug plate 5D and the hinge pin in the middle of the vertical plate 5A through the positioning holes on their lower end sides; The two hydraulic telescopic columns 3 have consistent size specifications; a pair of supporting back plates 7 are provided at the front and rear end sides of the main top beam 2A and the vertical positions of the vertical plate 5A opposite to each other; the bottom end and the extended end of the hydraulic telescopic support 3 are correspondingly installed at the position of the supporting back plate 7.

[0017] At least two connecting ribs 1F are arranged on the end plane of the side wing top plate 1B; the connecting ribs extend along the width direction of the side wing top plate 1B; side ear plates are arranged at the positions corresponding to the connecting ribs on the main top plate 1A; one end of the side ear plate extends outward, and positioning holes are opened at the relative positions of the side ear plate and the connecting rib plate; the main top plate 1A and the connecting rib plate are hinged on the positioning holes through positioning pins; the side wing top plate 1B is also a rectangular plate structure; functional through holes are arranged at the four corners of the side wing top plate 1B; two connecting rib plates are arranged at the middle of the side wall top plate near the functional through holes At, and reinforcing ribs are arranged between the two connecting ribs and the front and rear ends of the side wall top plate; a number of reinforcing longitudinal bars are also arranged between the connecting ribs, and the reinforcing ribs and the reinforcing longitudinal bars are perpendicular to the connecting ribs; an auxiliary rib is arranged in the middle of the side wing top plate 1B; positioning holes are opened on the main top beam 2A and the auxiliary rib; the two ends of the side jack 1C are respectively hinged and installed at the positioning holes; the number of side jacks 1C arranged between a single side wing top plate 1B and the main top plate 1A is at least two; and these side jacks 1C and side wing top plates 1B are symmetrically and evenly arranged on the side wing top plate 1B. In this embodiment, three side wing top plates are arranged on a single side of the main top plate, and the width of a single side wing top plate is greater than half of the width of the main top plate, and its length is less than one third of the width of the main top plate.

[0018] The width of the front top plate 1D is consistent with the total width of the main top plate 1A and the side wing top plates 1B on both sides of the main top plate 1A; the front side of the front top plate 1D is a downwardly inclined folding plate structure, and the width of the folding plate is smaller than the width of the front top plate 1D; a grid-shaped reinforcing rod is also provided on the front top plate 1D.

[0019] The main top beam 2A is a box-shaped structure with a hollow interior; the main top beam 2A 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 covered on the longitudinal vertical plates; a grid-shaped reinforcement plate is also arranged in the inner cavity of the main top beam 2A; two groups of limit support plates are also arranged between the two longitudinal vertical plates; the supporting back plate on the main top beam 2A seat is arranged in the area clamped by the main top plate, the longitudinal vertical plates and the limit support plates, and a cylinder connecting ear plate is also arranged in the clamped area; a number of side positioning plates and oblique rib plates are also arranged between the outer side wall of the main top beam 2A and the main top plate; one end of the oblique rib plate is connected to the outer side wall of the main top beam 2A, and the other end is arranged on the main top plate near its side edge; the side end faces of the side positioning plate and the oblique rib plate are attached to each other, and the side positioning plate and the oblique rib plate are arranged in an alternating manner.

[0020] The structure of the movable beam 2B is similar to that of the main top beam 2A, both of which are box-type structures with a hollow interior; the height of the movable beam 2B is smaller than that of the main top beam 2A; the side of the main top beam 2A 2A opposite to the movable beam 2B is a slope inclined toward the main top plate; a T-shaped rib is provided in the middle of the movable beam 2B; positioning ear plates are provided on the ends of the main top beam 2A and the T-shaped rib; the two positioning ear plates are of the same height, and the two ends of the front jack 2C are respectively hingedly mounted on the corresponding positioning ear plates; a front top plate is provided on the top of the movable beam 2B; 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 2B.

[0021] The central support platform 6A is a rectangular platform with a hollow interior; the rectangular platform includes a bottom plate; side panels are arranged on the left and right side edges of the top end surface of the bottom plate; the bottom of the bottom beam seat 5 is arranged on the bottom plate; a number of cross plates are arranged on the bottom plate in the area between the bottom beam seat 5 and the side panels; the cross plates are arranged along the width direction of the bottom plate, and the cross plates are at the same height as the side panels; a top plate is arranged on the cross plates and the side panels; a number of reinforcing ribs are also arranged between the bottom beam seat 5 and the central support platform 6A; the reinforcing rib is an L-shaped plate, and its two long sides are respectively attached to the bottom beam seat 5 and the central support platform 6A; the projections of the reinforcing ribs and the cross plates on the bottom plate of the central support platform 6A coincide with each other.

[0022] The trapezoidal platform 6B is a platform structure with a hollow interior. The contour shapes of the bottom plane and the top plane of the trapezoidal platform 6B are both isosceles trapezoids, and the size of the bottom plane is smaller than that of the top plane.

[0023] A number of transverse partitions are arranged between the vertical plates 5A; the transverse partitions divide the space between the two vertical plates 5A into a front hydraulic column section, a front connecting rod section, a rear connecting rod section, a transition section and a rear hydraulic column section from front to rear; the supporting back plate is arranged at the front hydraulic column section and the rear hydraulic column section; a single push seat 5B includes two hollow ear plate platforms placed in parallel; a connecting pin is arranged between the two ear plate platforms, and the push jack 5C is installed on the connecting pin; a group of relatively inclined clamps are arranged on the front hydraulic column section, the rear connecting rod section and the rear hydraulic column section; the clamps form an inverted eight-shaped groove with a larger upper part and a smaller lower part between the vertical plates 5A.

[0024] An auxiliary ear plate is provided at the position corresponding to the front connecting rod section in the middle of the vertical plate 5A; connecting rod pads are attached to the side walls of the vertical plate 5A corresponding to the auxiliary ear plate and the rear connecting rod section; the pin shaft is set through the connecting rod pad; pressure plates and blocks for installation in conjunction with the hydraulic telescopic support are provided on the side walls of the vertical plate 5A corresponding to the front hydraulic column section and the rear hydraulic column section; cover plates are also provided at positions close to the corresponding push seats 5B on the front hydraulic column section and the rear hydraulic column section, and a cover plate is also provided on the transition section; a valve group positioning seat is provided on the cover plate close to the front push seat position.

[0025] The upper connecting rod member 4A includes two side plates arranged opposite to each other; a top plate is arranged at the top position between the two side plates; a distance sleeve is arranged at the front side of the upper connecting rod member 4A; a V-shaped convex plate is also arranged on the top plate at a position corresponding to the position between the two positioning holes at the tail of the upper connecting rod member 4A; a frame plate for reinforcement is also arranged between the two side plates; one end of the frame plate is connected to the upper and lower positions of the outer wall of the distance sleeve through a joint plate; the front connecting rod member 4B and the rear connecting rod member 4C are similar in shape, and both include a hollow square column designed in the middle, and a distance sleeve arranged at the protruding end of the square column; the distance sleeves on the upper connecting rod member 4A, the front connecting rod member 4B and the rear connecting rod member 4C are all coaxial with the corresponding positioning holes, and their inner tube diameters are larger than the aperture size of the positioning holes.

[0026] When using the device of the present embodiment, the following process can be referred to for processing: 1. When the operator is operating the frame, it is strictly forbidden for other people to stand inside and on both sides of the support frame to be moved; 2. When the support moves forward, the hydraulic telescopic column must be retracted first, that is, the front and rear hydraulic telescopic columns of the same group of supports are quickly retracted at the same time. When the support just leaves the top plate (without top plate pressure or just with a little pressure), it is generally within 50mm and no more than 200mm at most. Make appropriate adjustments according to the convexity and concavity of the top plate in the tunnel; 3. Shifting the rack: When shifting the rack, remember that the front roof and side wing support plates need to be retracted at a certain angle so that they do not have hard contact with the roof. If there are large pieces of gangue or coal blocks falling in front of the bracket on the bottom plate, or the front of the bottom plate bracket is too deeply sunken, etc., the coal blocks, gangue and pads should be removed to shift the rack or other methods should be adopted before shifting the rack. The rack should be moved quickly and in place at one time, and the bracket should be adjusted at any time to make the moved bracket perpendicular to the bottom plate. 4. If the resistance is too great when moving the rack, the cause should be found out quickly and corresponding measures should be taken. Hard pulling is strictly prohibited. 5. Raise the column. Simultaneously operate the lifting control valves of the front and rear hydraulic telescopic columns of the frame to quickly raise the front and rear hydraulic telescopic columns to support the top plate and maintain pressure for 10-20 seconds. The technical staff will adjust the pressure regulating valve to make the bracket contact the top plate intactly.

Claims

1. A self-moving advance support for underground mines, characterized in that: It comprises a supporting top plate (1), a top beam seat (2), two hydraulic telescopic columns (3), a connecting rod (4), a bottom beam seat (5) and a pressure-bearing bottom plate (6); The supporting top plate (1) is arranged on the upper top of the top beam seat (2); the supporting top plate (1) comprises a main top plate (1A) in a rectangular plate structure; a plurality of side wing top plates (1B) are rotatably mounted on the left and right ends of the main top plate (1A); a plurality of side jacks (1C) are movably mounted between the side wing top plates (1B) and the main top plate (1A); and a front top plate (1D) is rotatably mounted on the front side of the main top plate (1A); The top beam seat (2) comprises a main top beam (2A) arranged on the lower side end surface of the main top plate (1A); the main top beam (2A) is arranged in the middle of the main top plate (1A) along its length direction; a movable beam (2B) is hingedly installed at the front end of the main top beam (2A); the top of the movable beam (2B) is attached to the front top plate (1D); the two ends of the side jack (1C) are respectively; the front jack (2C) is movably installed on the main top beam (2A) and the movable beam (2B); the side jack (1C) and the front jack (2C) can respectively drive the side jack (1C) and the front top plate (1D) to rotate relative to the main top plate (1A); a lower lug plate (2D) is also arranged at a position near the front end of the middle part of the main top beam (2A); and a hinge pin is arranged on the lower lug plate (2D); The pressure-bearing bottom plate (6) comprises a flat central support platform (6A); a trapezoidal platform (6B) is arranged on the front and rear sides of the central support platform (6A); one side of the long bottom of the trapezoidal platform (6B) is connected to the central support platform (6A), and the extended end of the trapezoidal platform (6B) is a ship-shaped structure with a larger upper part and a smaller lower part; The bottom beam seat (5) comprises a pair of vertical plates (5A) arranged on a central support platform (6A); the vertical plates (5A) are arranged at the middle position of the central support platform (6A) along its length direction; a push seat (5B) is arranged at the front and rear end sides between the two vertical plates (5A); a push jack (5C) is installed on the push seat (5B); an upper lug plate (5D) is also arranged at a position near the front end in the middle of the two vertical plates (5A); hinge pins are arranged on the middle of the two vertical plates (5A) and the upper lug plate (5D); The connecting rod (4) comprises an upper connecting rod member (4A), a front connecting rod member (4B) and a rear connecting rod member (4C); positioning holes are provided at the front side, the rear side and the middle part of the upper connecting rod member (4A) at the rear side; positioning holes are also provided at the upper and lower end sides of the front connecting rod member (4B) and the rear connecting rod member (4C); hinge pins are provided at the two positioning holes at the rear end of the upper connecting rod member (4A); the front connecting rod member (4B) and the rear connecting rod member (4C) are connected at the upper top end The front connecting rod (4B) is rotatably connected to the hinge pin on the upper connecting rod (4A); the length of the front connecting rod (4B) is greater than the length of the rear connecting rod (4C); the upper connecting rod (4A) is rotatably connected to the hinge pin on the lower lug plate (2D) through the positioning hole on the front side thereof; the front connecting rod (4B) and the rear connecting rod (4C) are rotatably connected to the lug plate (5D) and the hinge pin in the middle of the vertical plate (5A) through the positioning holes on the lower end sides thereof; The two hydraulic telescopic columns (3) have the same size specifications; a pair of supporting back plates (7) are provided at positions where the main top beam (2A) and the front and rear ends and the vertical plate (5A) are vertically opposite to each other; the bottom end and the extended end of the hydraulic telescopic support (3) are correspondingly mounted at the positions of the supporting back plates (7).

2. The self-moving advance support for use in mines according to claim 1 is characterized in that: At least two connecting ribs (1F) are arranged on the end plane of the side wing top plate (1B); the connecting ribs extend along the width direction of the side wing top plate (1B); a side ear plate is arranged on the main top plate (1A) at a position corresponding to the connecting rib plate; one end of the side ear plate extends outward, and a positioning hole is opened at a relative position between the side ear plate and the connecting rib plate; the main top plate (1A) and the connecting rib plate are hinged on the positioning hole through a positioning pin; the side wing top plate (1B) is also a rectangular plate structure; functional through holes are arranged at the four corners of the side wing top plate (1B); two connecting ribs are arranged at a position in the middle of the side wall top plate close to the functional through holes, A reinforcing rib is provided between the two connecting ribs and the front and rear ends of the side wall top plate; a plurality of reinforcing longitudinal bars are also provided between the connecting ribs, and the reinforcing rib and the reinforcing longitudinal bars are perpendicular to the connecting rib; an auxiliary rib is provided in the middle of the side wing top plate (1B); positioning holes are provided on the main top beam (2A) and the auxiliary rib; both ends of the side jack (1C) are hingedly mounted at the positioning holes; the number of the side jacks (1C) provided between a single side wing top plate (1B) and the main top plate (1A) is at least two; and the side jacks (1C) and the side wing top plates (1B) are symmetrically and evenly arranged on the side wing top plates (1B).

3. The self-moving advance support for underground mines according to claim 2 is characterized in that: The width of the front top plate (1D) is consistent with the total width of the main top plate (1A) and the side wing top plates (1B) on both sides of the main top plate (1A); the front side of the front top plate (1D) is a folding plate structure inclined downward, and the width of the folding plate is smaller than the width of the front top plate (1D); and a grid-shaped reinforcing rod is also provided on the front top plate (1D).

4. The self-moving advance support for underground mines according to claim 1 is characterized in that: The main top beam (2A) is a box-shaped structure with a hollow interior; the main top beam (2A) comprises a pair of longitudinal vertical plates arranged along the length direction of the main top plate; a plurality of transverse partitions are arranged between the longitudinal vertical plates; a cover plate is also covered on the longitudinal vertical plates; a grid-shaped reinforcement plate is also arranged in the inner cavity of the main top beam (2A); two groups of position-limiting support plates are also arranged between the two longitudinal vertical plates; a supporting back plate on the seat of the main top beam (2A) is arranged in an area sandwiched by the main top plate, the longitudinal vertical plates and the position-limiting support plates, and a cylinder connecting ear plate is also arranged in the sandwiched area; a plurality of side positioning plates and oblique rib plates are also arranged between the outer side wall of the main top beam (2A) and the main top plate; one end of the oblique rib plate is connected to the outer side wall of the main top beam (2A), and the other end is arranged on the main top plate near its side edge; the side end surfaces of the side positioning plate and the oblique rib plate are in contact with each other, and the side positioning plate and the oblique rib plate are arranged in an interlaced manner.

5. The self-moving advance support for underground mines according to claim 4 is characterized in that: The structure of the movable beam (2B) is similar to that of the main top beam (2A), both of which are box-type structures with a hollow interior; the height of the movable beam (2B) is smaller than that of the main top beam (2A); the side of the main top beam (2A) opposite to the movable beam (2B) is a slope inclined toward the main top plate; a T-shaped rib plate is arranged in the middle of the movable beam (2B); positioning ear plates are arranged at the end of the main top beam (2A) and the T-shaped rib plate; the two positioning ear plates are of the same height, and the two ends of the front jack (2C) are respectively hingedly mounted on the corresponding positioning ear plates; a front top plate is arranged on the top of the movable beam (2B); the front side of the front top plate is a folding plate structure inclined downward, 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 arranged between the front top plate and the movable beam (2B).

6. The self-moving advance support for underground mines according to claim 1 is characterized in that: The central support platform (6A) is a rectangular platform with a hollow interior; the rectangular platform comprises a bottom plate; side panels are arranged on the left and right side edges of the top end surface of the bottom plate; the bottom of the bottom beam seat (5) is arranged on the bottom plate; a plurality of transverse plates are arranged on the bottom plate in the area between the bottom beam seat (5) and the side panels; the transverse plates are arranged along the width direction of the bottom plate, and the transverse plates are at the same height as the side panels; a top plate is arranged on the transverse plates and the side panels; a plurality of reinforcing ribs are also arranged between the bottom beam seat (5) and the central support platform (6A); the reinforcing rib is an L-shaped plate, and its two long sides are respectively attached to the bottom beam seat (5) and the central support platform (6A); the projections of the reinforcing rib and the transverse plate on the bottom plate of the central support platform (6A) overlap.

7. The self-moving advance support for underground mines according to claim 6 is characterized in that: The trapezoidal platform (6B) is a platform structure with a hollow interior. The contour shapes of the bottom plane and the top plane of the trapezoidal platform (6B) are both isosceles trapezoids, and the size of the bottom plane is smaller than that of the top plane.

8. The self-moving advance support for underground mines according to claim 1 is characterized in that: A plurality of transverse partitions are arranged between the vertical plates (5A); the transverse partitions divide the space between the two vertical plates (5A) into a front hydraulic column section, a front connecting rod section, a rear connecting rod section, a transition section and a rear hydraulic column section from front to rear; the supporting back plate is arranged at the front hydraulic column section and the rear hydraulic column section; a single push seat (5B) comprises two hollow ear plate platforms arranged in parallel; a connecting pin is arranged between the two ear plate platforms, and the push jack (5C) is installed on the connecting pin; a group of relatively inclined clamping plates are arranged on the front hydraulic column section, the rear connecting rod section and the rear hydraulic column section; the clamping plates form an inverted eight-shaped groove with a larger upper part and a smaller lower part between the vertical plates (5A).

9. The self-moving advance support for underground mines according to claim 1 is characterized in that: An auxiliary ear plate is provided at a position in the middle of the vertical plate (5A) corresponding to the front connecting rod section; connecting rod pads are attached to the side walls of the vertical plate (5A) corresponding to the auxiliary ear plate and the rear connecting rod section; the pin is arranged through the connecting rod pad; pressure plates and blocks for installation in conjunction with the hydraulic telescopic support are provided on the side walls of the vertical plate (5A) corresponding to the front hydraulic column section and the rear hydraulic column section; cover plates are also provided at positions close to the corresponding push seats (5B) on the front hydraulic column section and the rear hydraulic column section, and a cover plate is also provided on the transition section; a valve group positioning seat is provided on the cover plate close to the front push seat position.

10. The self-moving advance support for underground mines according to claim 1, characterized in that: The upper connecting rod member (4A) comprises two side plates arranged opposite to each other; a top plate is arranged at the top position between the two side plates; a distance sleeve is arranged at the front side of the upper connecting rod member (4A); a V-shaped convex plate is also arranged on the top plate at a position corresponding to between two positioning holes at the tail of the upper connecting rod member (4A); a frame plate for reinforcement is also arranged between the two side plates; one end of the frame plate is connected to the upper and lower positions of the outer wall of the distance sleeve through a joint plate; the front connecting rod member (4B) and the rear connecting rod member (4C) are similar in shape, and both comprise a hollow square column designed in the middle, and a distance sleeve arranged at the protruding end of the square column; the distance sleeves on the upper connecting rod member (4A), the front connecting rod member (4B) and the rear connecting rod member (4C) are all coaxial with the corresponding positioning holes, and their inner tube diameters are larger than the hole diameters of the positioning holes.

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