CN217206520U - Self-moving roadway advance support bracket device - Google Patents

Abstract

The utility model relates to the technical field of roadway advance support, in particular to a self-moving roadway advance support device, which comprises two advance support monomers, wherein each advance support monomer comprises a base, a stand column, a top beam, a hydraulic control system and a bottom lifting mechanism, each advance support monomer is provided with a tilting prevention mechanism, and each tilting prevention mechanism comprises a tilting prevention seat hinged with the base and a tilting prevention jack hinged with the tilting prevention seat and the advance support monomer; the frame moving mechanism comprises an upper frame moving component and a lower frame moving component which are positioned at the middle upper part and the middle lower part of the forepoling single body; when the bottom lifting mechanism or the frame moving mechanism of one advance support single body works, the tilting prevention mechanism of the other advance support single body is spread and supported on the ground outside the base. This application is through preventing down the mechanism and moving the common effect of strutting of a mechanism, greatly reduced the possibility of taking place the slope, effectively ensured the steady safety of support device migration process action and the support effect of fixed leading support monomer to the tunnel roof, the security is high.

Description

Self-moving roadway advance support bracket device

Technical Field

The utility model relates to a tunnel advance support technical field is a from moving formula tunnel advance support device particularly.

Background

The hydraulic support is key equipment for comprehensive mechanical coal mining, has a quite long development history in China, is popularized and used in a plurality of large and medium-sized coal mines, and obtains obvious technical economic benefits and social benefits. With the development of coal mining technology, the technology of supporting the roadway by using the advanced hydraulic support instead of a single hydraulic prop and other devices in the mine roadway is already applied in China and obtains certain effect. However, the advance support needs to be arranged along with the migration and repeatedly supported due to the fact that the length of the advance support along the roadway is long and the coal mining surface continuously extends and changes, maintenance of the roadway top plate is not facilitated, and the use of the advance hydraulic support is difficult under the condition that the geological conditions of the coal seam are poor.

The conventional roadway advance support bracket mainly comprises a top beam, a base, an upright column, a hydraulic control system and the like. When the support works, the hydraulic control system controls the upright post to lift so that the top beam of the support is contacted with the top plate of the roadway to realize support; when the position is adjusted to move and the support is laid, the hydraulic control system is operated to lower the upright posts so that the support top beam is separated from the roadway top plate, and then the support body is conveyed and moved to a new supporting position to be supported again by using hoisting devices such as chain blocks, monorail cranes and the like, single pillars, winch auxiliary traction devices and the like in a matched mode. When the geological conditions of the roadway coal seam are deteriorated, the following problems can be caused, so that the support cannot be normally moved and used:

1. the roadway bottom plate, the roadway top plate and the roadway wall are seriously deformed under the influence of mine pressure, the working space of the cross section of the height and the width of the roadway is seriously extruded and reduced, devices for assisting movement, such as hoisting and traction, are difficult to be normally installed in place for use, the force is difficult to be exerted when the support is carried and moved for construction, and the working efficiency is extremely low;

2. when a roadway floor coal seam is soft, the support body enables the base to sink into the ground of the roadway floor in different degrees due to the fact that the downward pressure exceeds the bearing capacity of the roadway floor in the supporting operation process, a large amount of manpower is needed to be invested to carry out thorough bedding cleaning operation before moving again, the support bottom surface is higher than the movable supporting ground to continue carrying and moving, and coal mining operation replacement is seriously influenced.

In order to solve the technical problem, the application of the chinese utility model with publication number CN113339026A discloses a special-shaped roadway advance support method and an advance hydraulic support, which controls a support moving jack and a bottom lifting jack to make two front and rear advance hydraulic supports repeatedly support and move in a roadway, so as to realize self-moving walking of the supports and further realize the installation and adjustment of the advance supports on the roadway site. However, in the moving process of the advance hydraulic support in the scheme, one support is fixed on a roadway internal support top plate, and the other support is moved by lifting of a bottom lifting jack and pushing and pulling of a frame moving jack; even the situation of failure of the supporting function occurs, and great potential safety hazard is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem how to provide a from moving formula tunnel advance support device, make support device migration support the steady safety of action of moving the in-process repeatedly in the tunnel, ensured the support effect of fixed advance support monomer to the tunnel roof simultaneously, improve the safety of advance support at the on-the-spot installation of laying of roadway and adjustment.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

a self-moving roadway advance support device comprises two advance support single bodies connected by a support moving mechanism, wherein each advance support single body comprises a base, an upright post, a top beam, a hydraulic control system and a bottom lifting mechanism, the upright post is fixedly mounted on the base, the top beam is arranged at the top end of the upright post in a lifting mode, a tilting prevention mechanism is further arranged on each of the two advance support single bodies, each tilting prevention mechanism comprises a tilting prevention seat and a tilting prevention jack, the tilting prevention seats are hinged to the base, one end of each tilting prevention jack is hinged to the tilting prevention seat, and the other end of each tilting prevention jack is hinged to the advance support single body;

the frame moving mechanism comprises an upper frame moving assembly positioned at the middle upper part of the forepoling single body and a lower frame moving assembly positioned at the middle lower part of the forepoling single body; when the bottom lifting mechanism or the frame moving mechanism of one advance support single body works, the tilting prevention mechanism of the other advance support single body is unfolded and supported on the ground outside the base.

Has the advantages that: when the anti-falling mechanism is in a spreading state, the two advance support single bodies are stably supported; when the support device needs to be moved, firstly, the anti-falling mechanism of one forepoling single body is retracted to enable the anti-falling seat to be separated from the ground, and then the hydraulic control system controls the upright post of the forepoling single body to descend to enable the top beam of the upright post to be separated from the top plate of the roadway; then operating the bottom lifting mechanism of the single advance support to lift one side of the single advance support, compacting the suspended part below the base, starting the upper bracket assembly to push the single advance support to return to the right position, continuously compacting the suspended part below the base, and simultaneously starting the upper bracket assembly and the lower bracket assembly to push the single advance support to move horizontally, wherein the other single advance support is stably fixed in the roadway under the supporting action of the anti-collapse mechanism of the other single advance support, and forms stable support for supporting the top plate of the roadway; in addition, the upper moving frame assembly and the lower moving frame assembly are respectively positioned at the middle upper part and the middle lower part of the single forepoling body, and the bottom, the middle part and the top of the other single forepoling body are all in a stressed state in the process that one single forepoling body is lifted and corrected, so that the possibility of inclination is greatly reduced; therefore, the support device effectively ensures the stability and the safety of the movement of the support device in the moving process and the support effect of the advance support monomer fixed in the roadway on the roadway roof plate through the common supporting effect of the anti-falling mechanism and the support moving mechanism, and has high safety.

Preferably, the base comprises a bottom plate, side plates, a cover plate and arc-shaped covered edges, the bottom plate, the side plates and the cover plate are sequentially and fixedly connected to form a box-shaped structure, and the arc-shaped covered edges are fixedly covered on the outer sides of the side plates.

Has the advantages that: the base is of a box-shaped structure, and the periphery of the base is of a double-layer structure formed by the side plates and the arc-shaped wrapping edges, so that on one hand, the structural strength of the base is effectively improved; on the other hand, the arc-shaped wrapping edge not only eliminates the sharp corner of the grounding part of the base, avoids the base from cutting into and scraping the ground in the initial installation stage and the hoisting transportation process, reduces the difficulty of field transportation, but also has the double effects of improving the stability and saving labor when the forepoling single body is lifted up and stably rotating the base along the arc-shaped wrapping edge.

Preferably, a bottom support is fixedly arranged in the box-shaped structure of the base, a recess matched with the bottom of the upright post is formed in the top surface of the bottom support, and the upright post is fixedly connected with the bottom support; the base comprises a support piece which is fixedly installed in the box-type structure and extends above the cover plate, and the upright post is fixedly connected with the support piece.

Has the advantages that: the bottom of stand is passed through collet fixed mounting and is in the box structure of base, and sunken restriction prevents that the stand from removing in the box structure, and the upper portion and the support piece fixed connection of stand have improved the fastness of stand with the base is connected, have reduced the stand and have taken place the possibility that the slope to the holistic stability of bracket device has further been strengthened.

Preferably, the outer upper side of the arc-shaped wrapping edge is fixedly connected with a hinge lug seat, and the anti-falling seat is hinged with the hinge lug seat through a pin hole and a pin shaft; the upper portion fixedly connected with of base prevents down the lug seat, prevent down the lug seat and be located the apron directly over, just prevent down the jack and keep away from the one end of preventing down the lug seat and articulate.

Has the advantages that: the anti-falling seat is hinged with the base through the hinge lug seats, the anti-falling jack is hinged with the base through the anti-falling lug seats, when the anti-falling jack extends, the anti-falling seat is supported on the ground, and the anti-falling mechanism is in a spreading state; in the same way, when the anti-falling jack retracts, the anti-falling mechanism is in a retracting state; the hinge lug seat is fixedly connected with the outer upper side of the arc-shaped edge covering, so that the integrity of a high-strength box-type structure at the lower part of the base is kept as much as possible, and the anti-falling seat is hinged with the hinge lug seat through a pin hole and a pin shaft, so that the anti-falling device has the advantage of convenience and quickness in assembly and disassembly; in addition, prevent down the lug seat and be located the apron directly over, when preventing down the mechanism and withdrawing, prevent down the seat and can lean on the support body with preventing down the jack as far as to this reduces the free overall dimension of leading support, has made things convenient for holistic moving of support, transportation, putting etc..

Preferably, the bottom surface of the base is fixedly connected with a guide strip which is longitudinally arranged, and two ends of the guide strip are in chamfer or arc transition; and the bottom surface of the anti-falling seat is fixedly connected with a longitudinally arranged anti-slip strip.

Has the beneficial effects that: the arranged guide strip can be naturally cut into the bottom plate surface of the roadway, so that the situations of lateral movement and deviation of the support in the moving process are reduced; the problem that the rotation of the bracket is influenced due to the arrangement of the guide strips is solved by chamfering or arc transition at the two ends of the guide strips; the anti-slip strip arranged on the bottom surface of the anti-falling seat enhances the ground grabbing force of the bottom of the anti-falling seat, so that the anti-falling mechanism is more stable and reliable in support, and the stability and the safety of the movement in the migration process are further improved.

Preferably, the upper moving frame assembly comprises an upper moving frame jack arranged between the two forepoling single bodies, the stand columns of the two forepoling single bodies are respectively provided with an inner hoop and an outer hoop which are hinged with each other, the inner hoop is fixedly connected to the base, and the outer hoop and the inner hoop are fixed through bolts after being encircled on the stand columns; the outer hoop is fixedly connected with upper lug seats, and the upper moving frame jack is hinged with the upper lug seats of the two forepoling units.

Has the beneficial effects that: because the inner hoop is fixedly connected on the base, the upper moving frame jack is hinged with the outer hoop through the upper lug seat, when the inner hoop and the outer hoop are fixed on the upright post in an encircling way, on one hand, the inner hoop has the function of clamping and fixing the upright post, so that the upright post is firmly connected with the base; on the other hand, the upper moving frame jack is hinged with the two forepoling units, when the upper moving frame jack works, the upright column and the base can share the push-pull load borne by the support, the stability of the whole structure of the support device is improved, and the support device has the advantages of being simple in structure and convenient to install.

Preferably, move the frame subassembly down including installing and moving the frame jack down between two fore-stock monomers, equal rigid coupling has the frame of moving ear seat on two fore-stock monomer's the base, and moves the frame ear seat and extend to the top of base, moves down the top that the frame jack hinge connects two fore-stock monomer frame ear seats.

Has the advantages that: the lower support moving jack is hinged with the two advance support units through the support moving lug seats, due to the fact that the supports are prone to sinking in a roadway of the soft bottom plate, the lower support moving jack is arranged at the top end of the support moving lug seats, the position of the lower support moving jack is improved through the heightening design, the safe distance of avoiding being buried is increased, and the whole applicability of the support device is improved.

Preferably, the bottom lifting mechanism comprises a bottom lifting fixed cylinder, a bottom lifting jack and a supporting seat, the bottom lifting fixed cylinder is fixedly connected with the base, the top end of the bottom lifting jack is fixedly installed in the bottom lifting fixed cylinder, and the bottom end of the bottom lifting jack extends out of the bottom lifting fixed cylinder and is fixedly connected with the supporting seat.

Has the advantages that: because the bottom-lifting fixed cylinder is fixedly connected with the base, the bottom-lifting jack is fixedly installed in the bottom-lifting fixed cylinder, when the bottom-lifting mechanism works, the bottom-lifting jack extends and pushes the supporting seat downwards to support the supporting seat on the ground, so that one side of the single forepoling bracket can be lifted, and similarly, after the suspended part below the base is tamped, the bottom-lifting jack can be operated to retract, so that the subsequent aligning of the bracket is facilitated.

The utility model also provides a migration method of the self-moving roadway advance support bracket device, wherein the advance bracket monomer comprises a headstock which is positioned at the front side of the bracket moving mechanism and a tailstock which is positioned at the rear side of the bracket moving mechanism, and the bottom lifting mechanisms of the headstock and the tailstock are both positioned at the front part of the advance bracket monomer;

the migration method of the self-moving roadway advance support bracket device in the working condition of the soft roadway bottom plate comprises the following steps:

s1, head pushing frame

1.1 the headstock falls the stand, stretches and lifts the end: the support of the tail frame top beam on the top plate of the roadway and the support of the anti-falling mechanism on the tail frame are kept, the hydraulic control system controls the head frame stand column to descend, the head frame top beam is enabled to leave the top plate of the roadway, and the anti-falling mechanism of the head frame is retracted; then operating the bottom lifting mechanism of the head frame, lifting the front part of the head frame to enable the head frame to be wholly tilted backwards, and then backfilling a gasket and compacting the gasket at the suspended part below the base of the head frame to enable the head frame to be wholly and stably landed;

1.2 righting the headstock: operating the hydraulic control system to extend the upper bracket assembly so as to push the headstock to rotate and centralize the headstock; similarly, a subsequently exposed suspended part below the base of the head frame is filled with the plug pad and compacted to ensure that the head frame is wholly and stably placed on the ground (stably supported and placed on the ground), and then the bottom lifting mechanism is retracted;

1.3 pushing the headstock: simultaneously, the upper moving frame component and the lower moving frame component extend out, and the whole pushing head frame slides to a set position along the ground;

1.4 recovery of head support: the hydraulic control system is used for controlling the headstock upright post to extend, so that the headstock top beam is lifted to be in contact with the roadway top plate to be jacked.

S2 tail pulling frame

2.1 the tailstock falls the stand, stretches to lift at the bottom: the support of the headstock on the top plate of the roadway and the support of the anti-falling mechanism on the headstock are maintained, the upright post of the tailstock is controlled to descend by a hydraulic control system, the top beam of the tailstock leaves the top plate of the roadway, and the anti-falling mechanism of the tailstock is retracted; then operating a bottom lifting mechanism of the tail frame, lifting the front part of the tail frame to enable the tail frame to be tilted backwards integrally, and then backfilling a plug pad and compacting the plug pad in a suspended part below a base of the tail frame to enable the head frame to be stably landed integrally;

2.2 righting the tail frame: operating a hydraulic control system to retract the upper moving rack component so as to pull the tail rack to rotate and centralize the tail rack; similarly, a subsequently exposed suspended part below the tail frame base is filled with the plug pad and compacted to ensure that the tail frame is integrally and stably landed, and then the bottom lifting mechanism is retracted;

2.3 pulling and moving the tail frame: simultaneously retracting the upper moving frame component and the lower moving frame component, and sliding the whole dragging tail frame to a set position along the ground;

2.4 recovery tailstock support: the hydraulic control system is used for controlling the tail frame upright post to extend so as to lift the tail frame top beam to be in contact with the roadway top plate for jacking;

and S3, repeating the operation, so that the support continuously realizes stepping self-moving.

Has the beneficial effects that: according to the self-moving type forepoling support device designed and developed by the application, the support body is tilted backwards through the lifting action of the bottom lifting mechanism, after the suspended part is backfilled and tamped, the support body is righted to realize posture adjustment operation by pushing the head support through the upper moving support assembly or pulling the tail support; the headstock and the tailstock are repeatedly tilted backwards, righted and pushed and pulled to realize the self-moving walking of the support; the coordination of the bottom lifting mechanism, the upper moving frame assembly, the lower moving frame assembly and the anti-falling mechanism ensures the stability and safety of the movement of the support moving process, well adapts to the repeated supporting and moving laying working condition of the advance support in a narrow and long roadway, greatly facilitates the laying, installation and adjustment of the advance support in a roadway site, has practical significance for better maintaining a roadway roof and enriches the structural form of a roadway advance support product.

Preferably, in the step S1-1.1, the integral backward-bending angle of the headstock and the integral backward-bending angle of the tailstock in the step S2-2.1 are set according to the total height of the bracket, and when the total height of the bracket is less than or equal to 4 m, the backward-bending angle is less than or equal to 10 degrees; when the total height of the bracket is less than or equal to 2.6 meters, the backward bending angle is less than or equal to 15 degrees; when the total height of the bracket is less than or equal to 2 meters, the backward leaning angle is less than or equal to 20 degrees.

Has the beneficial effects that: if the height of the forepoling single body is high, the backward bending angle is large, and the situation of toppling caused by instability of the center of gravity is easy to occur; if the height of the forepoling single body is low and the backward angle is small, the problem that the single moving distance is too short exists, and the moving efficiency is reduced; when the total height of the bracket is less than or equal to 4 m, the backward bending angle is less than or equal to 10 degrees; when the total height of the bracket is less than or equal to 2.6 meters, the backward bending angle is less than or equal to 15 degrees; when the total height of the bracket is less than or equal to 2 m, the backward leaning angle is less than or equal to 20 degrees, and the moving stability and the moving efficiency are ensured.

Preferably, the plug pad backfilled in the steps S1 and S2 is made of coal cinder and gangue and sleeper blocks, can be made of local materials, and is simple and convenient.

Preferably, in the process of righting the headstock in the step S1-1.2 and righting the tailstock in the step S2-2.2, the entire weight of the rack is supported by the force of the bottom-lifting support seat, and if the support seat is unstable in support and has an obvious front-back sliding trend, the extension speed of the upper moving rack assembly is reduced, and the posture of the rack is stabilized by matching with the small telescopic lower moving rack assembly.

A migration method of a self-moving roadway advance support bracket device is characterized by comprising the following steps: the forepoling unit comprises a headstock positioned on the front side of the frame moving mechanism and a tailstock positioned on the rear side of the frame moving mechanism;

the migration method of the self-moving roadway advance support bracket device under the working condition of the bottom plate of the hard roadway comprises the following steps:

s1, head pushing frame

1-1, head frame lowering column: the support of the tail frame top beam on the top plate of the roadway and the support of the anti-falling mechanism on the tail frame are kept, the hydraulic control system controls the head frame stand column to descend, the head frame top beam is enabled to leave the top plate of the roadway, and the anti-falling mechanism of the head frame is retracted;

1-2 pushing the headstock: simultaneously, the upper moving frame component and the lower moving frame component extend out, and the whole pushing head frame slides to a set position along the ground;

1-3 recovery of head support: the hydraulic control system is used for controlling the headstock upright post to extend, so that the headstock top beam is lifted to be in contact with the roadway top plate and be in a solid state;

s2 tail pulling frame

2-1, descending the column from the tailstock: the support of the headstock on the top plate of the roadway and the support of the anti-falling mechanism on the headstock are maintained, the upright post of the tailstock is controlled to descend by a hydraulic control system, the top beam of the tailstock leaves the top plate of the roadway, and the anti-falling mechanism of the tailstock is retracted;

2-2 pulling and moving the tail frame: simultaneously retracting the upper moving frame component and the lower moving frame component, and sliding the whole dragging tail frame to a set position along the ground;

2-3 recovering tailstock support: the hydraulic control system is used for controlling the tail frame upright post to extend so as to lift the tail frame top beam to be in contact with the roadway top plate for jacking;

and S3, repeating the operation, so that the support continuously realizes stepping self-moving.

The utility model has the advantages of:

1. when the bottom lifting mechanism or the frame moving mechanism of one advance support single body works, the other advance support single body is stably fixed in the roadway under the supporting action of the anti-falling mechanism of the other advance support single body, and forms stable support for supporting the top plate of the roadway; meanwhile, the bottom, the middle and the upper part of the single forepoling are respectively limited by the anti-falling mechanism, the frame moving mechanism and the roadway top plate, so that the bottom, the middle and the top of the single forepoling are all in a stressed state, and the possibility of inclination is greatly reduced; therefore, the support device effectively ensures the stability and the safety of the movement of the support device in the moving process and the support effect of the advance support monomer fixed in the roadway on the roadway top plate through the common support function of the anti-falling mechanism and the support mechanism, and improves the safety of the arrangement, installation and adjustment of the advance support in the roadway site.

2. The base of the utility model is of a box-type structure, and the periphery of the base adopts a double-layer structure formed by the side plates and the arc-shaped wrapping edges, so that on one hand, the structural strength of the base is effectively improved; on the other hand, the arc-shaped wrapping edge not only eliminates the sharp corner of the grounding part of the base, avoids the base from cutting into and scraping the ground in the initial installation stage and the hoisting transportation process, reduces the difficulty of field transportation, but also has the double effects of improving the stability and saving labor when the forepoling single body is lifted up and stably rotating the base along the arc-shaped wrapping edge.

3. The utility model relates to a self-moving forepoling bracket device which is developed, the bracket body is backwards tilted through the lifting action of a bottom lifting mechanism, after the suspended part is backfilled and tamped, the bracket body is righted to realize the posture adjustment operation by pushing a head bracket through a top bracket moving assembly or pulling a tail bracket; the headstock and the tailstock are repeatedly tilted backwards, righted and pushed and pulled to realize the self-moving walking of the support; the coordination of the bottom lifting mechanism, the upper moving frame assembly, the lower moving frame assembly and the anti-falling mechanism ensures the stability and safety of the movement of the support moving process, well adapts to the repeated supporting and moving laying working condition of the advance support in a narrow and long roadway, greatly facilitates the laying, installation and adjustment of the advance support in a roadway site, has practical significance for better maintaining a roadway roof and enriches the structural form of a roadway advance support product.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;

FIG. 2 is a view taken along line A of FIG. 1;

FIG. 3 is a schematic structural diagram of a base in an embodiment of the present application;

FIG. 4 is a view from the direction B of FIG. 2;

FIG. 5 is a schematic structural diagram of an anti-falling mechanism in the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a bottom raising mechanism in an embodiment of the present application;

FIG. 7 is a schematic structural view of an outer band and an inner band in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of an outer clamp and an inner clamp clasping on an upright post in the embodiment of the present application;

FIG. 9 is a schematic structural view of an upper carriage assembly according to an embodiment of the present application;

FIG. 10 is a schematic view of the overall structure of the hidden rack moving mechanism according to the embodiment of the present application;

fig. 11 is a schematic structural view of a lower carriage assembly in an embodiment of the present application.

Description of reference numerals: 1. a base; 11. a base plate; 111. a bottom support; 112. a guide strip; 113. chamfering and transition; 12. A side plate; 13. a cover plate; 14. arc edge covering; 15. a support member; 2. a column; 3. a top beam; 4. a hydraulic control system; 5. an anti-falling mechanism; 51. an anti-falling seat; 511. anti-slip strips; 52. a hinged ear mount; 53. a falling prevention jack; 54. an anti-falling lug seat; 6. a bottom lifting mechanism; 61. lifting the bottom to fix the cylinder; 62. lifting a bottom jack; 63. a supporting seat; 7. a frame moving mechanism; 71. an upper carriage assembly; 711. an upper moving frame jack; 712. an outer hoop; 713. an inner hoop; 714. an upper ear mount; 72. a down-moving frame assembly; 721. a lower moving frame jack; 722. moving the frame ear seat; 723. heightening the pin hole; 81. a head frame; 82. and (4) a tail frame.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

The embodiment of the application discloses from moving formula tunnel advance support device. Referring to fig. 1 and 2, the self-moving roadway advance support bracket device comprises two advance bracket single bodies, wherein each advance bracket single body comprises a base 1, an upright post 2, a top beam 3, a hydraulic control system 4, a bottom lifting mechanism 6 and an anti-falling mechanism 5.

Referring to fig. 1 and 3, the base 1 includes a bottom plate 11, side plates 12, a cover plate 13, an arc-shaped wrapping 14, and a support 15. The bottom plate 11, the side plate 12 and the cover plate 13 are fixedly connected in sequence to form a box-shaped structure. The arc-shaped edge covering 14 is a semicircular pipe type and fixedly covers the outer side of the side plate 12, so that a double-layer structure is formed at the periphery of the box-type structure, the structural strength of the base 1 is effectively improved, the sharp corner of the grounding part of the base 1 is eliminated, ground scraping during installation and transportation is avoided, and the base 1 can stably rotate along the arc-shaped edge covering 14.

Referring to fig. 1 and 4, the front surface of the supporting member 15 is convex, and the bottom thereof is fixedly installed in the box-shaped structure and extends above the cover plate 13. The bottom surface in the box structure is fixed and is placed collet 111, offers on the top surface of collet 111 with 2 bottoms complex sunken. Stand 2 is equipped with two, and two stands 2 are located support piece 15's both sides respectively, and the bottom of two stands 2 is all fixed place in the sunken of collet 111, well upper portion all with support piece 15's upper portion fixed connection, and sunken restriction prevents that stand 2 from removing in the box structure, and support piece 15's supporting role has reduced the possibility that stand 2 takes place to incline, has improved the firm connection that stand 2 and base 1 are connected.

Referring to fig. 1, a column 2 is a column 2 type jack, and a top beam 3 is fixedly installed at the top end of the column 2. Hydraulic control system 4 is connected with stand 2 electricity, controls hydraulic control system 4 and makes stand 2 extension or shrink, can realize the lift removal of back timber 3, when back timber 3 props up the tunnel roof, can form the support to the tunnel, prevents that the tunnel from receiving the mine pressure to influence serious deformation.

Referring to fig. 4 and 5, the falling prevention mechanism 5 includes a falling prevention seat 51, a hinge lug 52, a falling prevention jack 53, and a falling prevention lug 54. The hinge lug seat 52 is fixedly connected to the outer upper side of the arc-shaped edge covering 14, a pin hole is formed in the hinge lug seat 52, and the tilting prevention seat 51 is hinged to the hinge lug seat 52 through a pin shaft and the pin hole, so that the base 1 is hinged. The anti-falling lug seat 54 is fixedly connected to the upper part of the support member 15, and the anti-falling lug seat 54 is positioned right above the cover plate 13. The anti-falling lug seat 54 is provided with a pin hole, and the upper end of the anti-falling jack 53 is hinged with the support piece 15 through a pin shaft and the pin hole so as to realize the hinge joint with the base 1; the lower end of the falling prevention jack 53 is hinged with one end of the falling prevention seat 51 far away from the hinge lug seat 52.

Referring to fig. 2 and 5, two anti-falling mechanisms 5 are arranged on each advance support single body, and the two anti-falling mechanisms 5 are located on two sides of the base 1. The anti-falling jack 53 is electrically connected with the hydraulic control system 4, the hydraulic control system 4 is operated to extend the anti-falling jack 53, the anti-falling jack 53 supports the anti-falling seat 51 on the ground outside the base 1, stable support can be formed for the single forepoling support, the stability of the single forepoling support is effectively improved, and the hinged lug seat 52 is fixedly connected with the outer upper side of the arc-shaped edge covering 14, so that the integrity of the high-strength box-type structure at the lower part of the base 1 is kept as much as possible during support. When the hydraulic control system 4 is operated to enable the anti-falling jack 53 to retract, the anti-falling jack 53 pulls the base 1 to rotate upwards until the anti-falling jack is attached to the support body, so that the overall dimension of the forepoling is reduced, and the support is convenient to move, transport, place and the like integrally.

Referring to fig. 6, the bottom lifting mechanism 6 includes a bottom lifting fixing cylinder 61, a bottom lifting jack 62 and a supporting base 63, wherein the bottom lifting fixing cylinder 61 has a downward opening and is fixedly connected with the bottom of the base 1. The top end of the bottom lifting jack 62 is fixedly arranged in the bottom lifting fixed cylinder 61, and the bottom end of the bottom lifting jack is fixedly connected with the supporting seat 63 through a pin shaft after extending out of the bottom lifting fixed cylinder 61. The bottom lifting jack 62 is electrically connected with the hydraulic control system 4, the hydraulic control system 4 is operated to extend the bottom lifting jack 62, and the bottom lifting jack 62 pushes the support base 63 downwards to support the support base on the ground, so that one side of the forepoling single body is lifted; similarly, when the bottom-lifting jack 62 is retracted, the single lead frame can be restored to the horizontal state.

Referring to fig. 1, a frame moving mechanism 7 is disposed between two single lead frames, the frame moving mechanism 7 includes an upper frame assembly 71 and a lower frame assembly 72, the upper frame assembly 71 is located at the middle upper portion of the single lead frame, and the lower frame assembly 72 is located at the middle lower portion of the single lead frame. As shown in fig. 7 and 8, the upper bracket assembly 71 includes an upper bracket jack 711, an outer band 712, and an inner band 713. The outer clamp 712 and the inner clamp 713 are hinged to each other through a pin, the inner clamp 713 is fixed to the upper portion of the support member 15 in a welded manner, and the outer clamp 712 and the inner clamp 713 are wrapped around the upright 2 and fixed through bolts. Two sets of outer clips 712 and inner clips 713 are provided on a single lead frame body, thereby achieving the fixed connection of the upright 2 and the support member 15. As shown in fig. 9, the upper bracket jack 711 is located between the two single forepoling units, the outer hoops 712 on the inner sides of the two single forepoling units are fixedly connected with the upper ear seats 714, and the upper bracket jack 711 is hinged to the upper ear seats 714, so that the upper bracket jack 711 is hinged to the single forepoling unit. When the upper moving frame jack 711 works, one advance support single body pushes and pulls the other advance support single body through the upper moving frame jack 711, at the moment, the upright column 2 and the base 1 can share the push-pull load together, and the stability of the whole structure of the support device is improved.

Referring to fig. 10 and 11, the lower moving frame assembly 72 includes a lower moving frame jack 721 and a moving frame lug 722, and the moving frame lug 722 is fixedly connected to the bottom of the base 1 and extends above the cover plate 13. The lower moving frame jack 721 is positioned between the two forepoling single bodies, the top end of the moving frame lug 722 is provided with a heightening pin hole 723, the height of a central shaft of the heightening pin hole 723 is not less than 400mm, and the lower moving frame jack 721 is hinged with the moving frame lug 722 through the heightening pin hole 723 and a pin shaft. The heightening design of the pin holes on the support moving lug seat 722 improves the position of the support moving jack 721, prevents sinking and burying in the roadway of the soft bottom plate 11 and improves the overall applicability of the support device.

The upper support moving jack 711 and the lower support moving jack 721 are electrically connected with the hydraulic control system 4, and the hydraulic control system 4 is operated to stretch the upper support moving jack 711 and/or the lower support moving jack 721, so that one single advance support can push or pull the other single advance support. When the device is used, the two forepoling single bodies are fixed in a roadway, the top beams 3 support the top plate of the roadway, and the anti-falling jacks 53 support the anti-falling seats 51 and support the ground; when the support device needs to be moved, the anti-falling mechanism 5 of one advance support single body is folded, and then the upright post 2 of the advance support single body is controlled to fall through the hydraulic control system 4, so that the top beam 3 is separated from the top plate of the roadway; then operating the bottom lifting jack 62 of the fore support single body to lift one side of the fore support single body, suspending the lower part of the base 1 of the fore support single body at the moment, and backfilling coal cinder and gangue and sleeper blocks for tamping; then, the upper moving frame jack 711 is operated to push the single forepoling to return, after the suspended part below the base 1 is filled up continuously, the upper moving frame jack 711 and the lower moving frame jack 721 are operated simultaneously, and the two jacks are matched together to push the single forepoling to move horizontally; after the advance support single body moves to the set position, the other advance support single body is pushed and pulled to move in the same way, and the self-moving walking of the support is realized through a repeated supporting and moving way.

In the lifting or aligning process of one advance support single body, the other advance support single body is stably fixed in the roadway under the supporting action of the anti-falling mechanism 5 of the other advance support single body, and forms stable support for supporting the roadway top plate; moreover, because the upper bracket assembly 71 and the lower bracket assembly 72 are respectively positioned at the middle upper part and the middle lower part of the single forepoling body, the bottom, the middle part and the top of the other forepoling body are all in a stressed state, so that the possibility of inclination is greatly reduced; therefore, the common supporting function of the anti-falling mechanism 5 and the support moving mechanism 7 effectively ensures the stable and safe action of the support device in the moving process and the supporting effect of the advance support monomer fixed in the roadway on the roadway roof, and has high safety.

Referring to fig. 2, the bottom surface of the base 1 is fixedly connected with a plurality of guide bars 112, and the plurality of guide bars 112 are longitudinally arranged, in this embodiment, three guide bars are taken out, and naturally cut into the bottom plate 11 surface of the roadway, so that the situations of lateral movement and deviation of the support in the moving process are reduced. Both ends of the guide strip 112 are in chamfer or arc transition, so that the guide strip 112 is prevented from influencing the rotation of the support, and the moving effect of the support is ensured. The bottom surface of the falling prevention seat 51 is fixedly connected with a plurality of anti-slip strips 511, and the anti-slip strips 511 are longitudinally arranged, two in the embodiment. The anti-slip strips 511 enhance the ground gripping force at the bottom of the anti-falling seat 51, so that the anti-falling mechanism 5 is more stable and reliable in support, and the stability and the safety of the movement of the bracket device in the moving process are further improved.

Example 2

The embodiment of the application discloses a migration method of a self-moving roadway advance support bracket device, in particular to a migration method of the self-moving roadway advance support bracket device in the working condition of a soft roadway bottom plate 11. The method adopts the forepoling single body in embodiment 1, the two forepoling single bodies are respectively a head frame 81 and a tail frame 82, the head frame 81 is positioned at the front side of the frame moving mechanism 7, the tail frame 82 is positioned at the rear side of the frame moving mechanism 7, and the bottom lifting mechanisms 6 of the head frame 81 and the tail frame 82 are positioned at the front part of the forepoling single body.

The migration method of the self-moving roadway advance support bracket device comprises the following steps:

s1, head pushing frame 81

1.1 headstock 81 descends column 2, stretches and lifts the bottom: the support of the top beam 3 of the tail frame 82 to the top plate of the roadway and the support of the anti-falling mechanism 5 to the tail frame 82 are maintained, the upright post 2 of the headstock 81 is controlled to descend through the hydraulic control system 4, the top beam 3 of the headstock 81 is enabled to leave the top plate of the roadway, and the anti-falling mechanism 5 of the headstock 81 is retracted.

Then, the bottom raising mechanism 6 of the head frame 81 is operated to extend the bottom raising jack 62, and the supporting seat 63 is supported on the ground to raise the front portion of the head frame 81, so that the head frame 81 is tilted backward as a whole, and the tilting angle should be controlled: when the total height of the bracket is less than or equal to 4 m, the backward bending angle is less than or equal to 10 degrees; when the total height of the bracket is less than or equal to 2.6 meters, the backward bending angle is less than or equal to 15 degrees; when the total height of the bracket is less than or equal to 2 m, the backward leaning angle is less than or equal to 20 degrees, and the gravity center is prevented from unstably toppling.

Then, the suspended part below the base 1 of the headstock 81 is backfilled with coal cinder, gangue, sleeper blocks and other plug cushions and compacted, and the compaction of the plug cushions can be assisted by a mode of trial descending and lifting the bottom jack 62 until the headstock 81 is supported and stably compacted integrally. Wherein, the back-filled plug cushion adopts coal cinder gangue and sleeper blocks, can use local materials, and is simple and convenient.

1.2 centering headstock 81: the hydraulic control system 4 is operated to extend the upper lifting jack 711, so as to push the head frame 81 to rotate to centralize the head frame 81; note that the fore-stock unit supports the weight of the whole frame completely by the support 63, and if the support 63 is not stable and the sliding tendency is obvious, the extension speed of the upper support-moving jack 711 should be reduced, and the posture of the frame should be stabilized by the small telescopic lower support-moving jack 721.

Similarly, the suspended part exposed below the base 1 of the headstock 81 is filled with coal cinder, gangue, sleeper blocks and other filling cushions and compacted, so that the whole headstock 81 is stably landed, and then the bottom lifting jack 62 and the supporting seat 63 are retracted.

1.3 pushing headstock 81: the upper support jack 711 and the lower support jack 721 are extended out simultaneously, and the two jacks push the headstock 81 together to make the whole headstock slide along the ground until the headstock moves to a set position.

1.4 recovery headgear 81 support: the hydraulic control system 4 is used for controlling the upright post 2 of the headstock 81 to extend, so that the top beam 3 of the headstock 81 is lifted to be contacted with the top plate of the roadway and be jacked.

S2, tail pulling frame 82

2.1 the tailstock 82 descends the upright 2, stretches and lifts the bottom: the supporting of the headstock 81 to the roadway top plate and the supporting of the anti-falling mechanism 5 to the headstock 81 are maintained, the hydraulic control system 4 controls the upright post 2 of the tailstock 82 to descend, so that the top beam 3 of the tailstock 82 leaves the roadway top plate, and the anti-falling mechanism 5 of the tailstock 82 is folded.

Then, the bottom lifting mechanism 6 of the tail frame 82 is operated to extend the bottom lifting jack 62, and the supporting seat 63 is supported on the ground, so that the front part of the tail frame 82 can be lifted, the tail frame 82 is tilted backwards integrally, and the backward tilt angle should be controlled by the following steps: when the total height of the bracket is less than or equal to 4 meters, the backward inclination angle is less than or equal to 10 degrees; when the total height of the bracket is less than or equal to 2.6 meters, the backward bending angle is less than or equal to 15 degrees; when the total height of the bracket is less than or equal to 2 m, the backward leaning angle is less than or equal to 20 degrees, and the gravity center is prevented from unstably toppling.

Then, the suspended part below the base 1 of the tail frame 82 is backfilled with coal cinder, gangue, sleeper blocks and other plug cushions and compacted, and the plug cushions can be assisted to be compacted in a mode of trial descending and lifting the bottom jack 62 until the tail frame 82 is supported and firmly compacted integrally.

2.2 righting the tailstock 82: the hydraulic control system 4 is operated to retract the upper carriage jack 711, so that the tail carriage 82 is pulled to rotate to centralize the tail carriage 82; note that the fore-stock unit supports the weight of the whole frame completely by the support 63, and if the support 63 is not stable and the sliding tendency is obvious, the retraction speed of the upper support moving jack 711 should be reduced, and the posture of the frame should be stabilized by the small telescopic lower support moving jack 721.

Similarly, the suspended part exposed below the base 1 of the tail frame 82 is filled with filling cushions such as coal slag gangue, sleeper blocks and the like and compacted, so that the whole tail frame 82 is stably landed, and then the bottom lifting jack 62 and the supporting seat 63 are retracted.

2.3 pulling and moving the tail frame 82: and simultaneously retracting the upper support moving jack 711 and the lower support moving jack 721, and pulling the tail frame 82 together to enable the whole tail frame to slide along the ground until the tail frame moves to a set position.

2.4 recovery tailstock 82 supports: the hydraulic control system 4 is used for controlling the tail stock 82 to extend, so that the top beam 3 of the lifting tail stock 82 is contacted with the roadway roof to be jacked.

And S3, repeating the operation, so that the support continuously realizes stepping self-moving.

Example 3

The embodiment of the application discloses a migration method of a self-moving roadway advance support bracket device, in particular to a migration method of the self-moving roadway advance support bracket device in the working condition of a hard roadway bottom plate 11. The method adopts the advance support single bodies in embodiment 1, the two advance support single bodies are respectively a headstock 81 and a tailstock 82, the headstock 81 is located on the front side of the frame moving mechanism 7, and the tailstock 82 is located on the rear side of the frame moving mechanism 7.

The migration method of the self-moving roadway advance support bracket device comprises the following steps:

s1, head pushing frame 81

1-1, head frame 81 descending column 2: the support of the top beam 3 of the tail frame 82 to the top plate of the roadway and the support of the anti-falling mechanism 5 to the tail frame 82 are maintained, the upright post 2 of the headstock 81 is controlled to descend through the hydraulic control system 4, the top beam 3 of the headstock 81 is enabled to leave the top plate of the roadway, and the anti-falling mechanism 5 of the headstock 81 is retracted.

1-2 pushing headstock 81: the upper support jack 711 and the lower support jack 721 are extended out simultaneously, and the two jacks push the headstock 81 together to make the whole headstock slide along the ground until the headstock moves to a set position.

1-3 recovery headgear 81 support: the hydraulic control system 4 is used for controlling the upright post 2 of the headstock 81 to extend, so that the top beam 3 of the headstock 81 is lifted to be contacted with the top plate of the roadway and be jacked.

S2, tail pulling frame 82

2-1 tailstock 82 descending column 2: the supporting of the headstock 81 to the roadway top plate and the supporting of the anti-falling mechanism 5 to the headstock 81 are maintained, the hydraulic control system 4 controls the upright post 2 of the tailstock 82 to descend, so that the top beam 3 of the tailstock 82 leaves the roadway top plate, and the anti-falling mechanism 5 of the tailstock 82 is folded.

2-2 pulling and moving the tail frame 82: and simultaneously retracting the upper support moving jack 711 and the lower support moving jack 721, and pulling the tail frame 82 together to enable the whole tail frame to slide along the ground until the tail frame moves to a set position.

2-3 recovery tailstock 82 support: the hydraulic control system 4 is used for controlling the tail stock 82 to extend, so that the top beam 3 of the lifting tail stock 82 is contacted with the roadway roof to be jacked.

And S3, repeating the operation, so that the support continuously realizes stepping self-moving.

The use principle and the advantages are as follows: according to the self-moving type forepoling support device designed and developed in the application, the support body is tilted backwards through the lifting action of the bottom lifting mechanism 6, after the suspended part is backfilled and tamped, the support body is righted to realize posture adjustment operation by pushing the headstock 81 through the upper moving support assembly 71 or pulling the tailstock 82; the operation of pushing the headstock 81 or pulling the tailstock 82 is carried out by jointly pushing and pulling the upper bracket assembly 71 and the lower bracket assembly 72, so that the headstock 81 and the tailstock 82 are repeatedly tilted backwards, righted and pushed and pulled, and the self-moving walking of the bracket is realized; in the process, when one of the advance support single bodies is lifted or returns to the positive process, the other advance support single body is stably fixed in the roadway under the supporting effect of the anti-falling mechanism 5 and stably supports the top plate of the supporting roadway, and meanwhile the bottom, the middle and the top of the other advance support single body are all in a stressed state, so that the possibility of inclination is greatly reduced. It can be seen that the bottom lifting mechanism 6, the upper moving frame assembly 71, the lower moving frame assembly 72 and the falling prevention mechanism 5 are cooperatively matched, so that the stability and safety of the movement of the support device in the migration process and the supporting effect of the single advance support fixed in the roadway on the top plate of the roadway are effectively ensured, the repeated supporting, moving and laying working conditions of the advance support in the narrow and long roadway are well adapted, the arrangement, installation and adjustment of the advance support in the roadway site are greatly facilitated, the practical significance is realized for better maintaining the top plate of the roadway, and the structural form of the product of the advance support in the roadway is enriched.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (7)

1. The utility model provides a from moving formula tunnel advance support device, includes by moving two fore-stock monomers that a mechanism (7) is connected, every the fore-stock monomer includes base (1), stand (2), back timber (3), hydraulic control system (4) and lifts end mechanism (6), stand (2) fixed mounting is on base (1), back timber (3) go up and down to set up on the top of stand (2), its characterized in that: the advance support single body comprises a head frame (81) located on the front side of the support moving mechanism (7) and a tail frame (82) located on the rear side of the support moving mechanism (7), bottom lifting mechanisms (6) of the head frame (81) and the tail frame (82) are located on the front portion of the advance support single body, each advance support single body is further provided with a falling prevention mechanism (5), each falling prevention mechanism (5) comprises a falling prevention seat (51) and a falling prevention jack (53), the falling prevention seat (51) is hinged to the base (1), one end of the falling prevention jack (53) is hinged to the falling prevention seat (51), and the other end of the falling prevention jack is hinged to the advance support single body;

the frame moving mechanism (7) comprises an upper frame assembly (71) positioned at the middle upper part of the forepoling single body and a lower frame assembly (72) positioned at the middle lower part of the forepoling single body; when the bottom lifting mechanism (6) or the frame moving mechanism (7) of one advance support single body works, the anti-falling mechanism (5) of the other advance support single body is unfolded and supported on the ground outside the base (1).

2. The self-advancing roadway advance support bracket device according to claim 1, characterized in that: the base (1) comprises a bottom plate (11), side plates (12), a cover plate (13) and an arc-shaped edge covering (14), wherein the bottom plate (11), the side plates (12) and the cover plate (13) are sequentially and fixedly connected to form a box-shaped structure, and the arc-shaped edge covering (14) is fixedly covered on the outer side of the side plates (12).

3. The self-advancing roadway advance support bracket device according to claim 2, characterized in that: the outer upper side of the arc-shaped wrapping edge (14) is fixedly connected with a hinge lug seat (52), and the anti-falling seat (51) is hinged with the hinge lug seat (52) through a pin hole and a pin shaft; the upper portion fixedly connected with of base (1) prevents down lug seat (54), prevent down lug seat (54) and be located apron (13) directly over, just prevent down one end that down lug seat (51) was kept away from in jack (53) and prevent down lug seat (54) and articulate.

4. The self-advancing roadway advance support bracket device according to claim 1, characterized in that: the bottom surface of the base (1) is fixedly connected with a guide strip (112) which is longitudinally arranged, and two ends of the guide strip (112) are in chamfer or arc transition; the bottom surface of the anti-falling seat (51) is fixedly connected with a longitudinally arranged anti-slip strip (511).

5. The self-advancing roadway advance support bracket device according to claim 1, characterized in that: the upper moving rack assembly (71) comprises an upper moving rack jack (711) arranged between two forepoling single bodies, inner hoops (713) and outer hoops (712) which are hinged with each other are arranged on the upright columns (2) of the two forepoling single bodies, the inner hoops (713) are fixedly connected to the base (1), and the outer hoops (712) and the inner hoops (713) are encircled on the upright columns (2) and then fixed through bolts; an upper lug seat (714) is fixedly connected to the outer hoop (712), and the upper moving frame jack (711) is hinged to the upper lug seats (714) of the two forepoling units.

6. The self-advancing roadway advance support bracket device according to claim 1, characterized in that: move down frame subassembly (72) including installing and move down a jack (721) between two forepoling monomers, equal rigid coupling has on two forepoling monomer's base (1) moves a lug (722), and moves a lug (722) and extend to the top of base (1), moves down a jack (721) and articulates the top that moves a lug (722) at two forepoling monomers.

7. The self-advancing roadway advance support bracket device according to claim 1, characterized in that: the bottom lifting mechanism (6) comprises a bottom lifting fixed cylinder (61), a bottom lifting jack (62) and a supporting seat (63), the bottom lifting fixed cylinder (61) is fixedly connected with the base (1), the top end of the bottom lifting jack (62) is fixedly installed in the bottom lifting fixed cylinder (61), and the bottom end of the bottom lifting jack (62) extends out of the bottom lifting fixed cylinder (61) and then is fixedly connected with the supporting seat (63).

Images