CN216198258U

CN216198258U - Migration system of advance reinforcing support of stope face

Info

Publication number: CN216198258U
Application number: CN202023325031.4U
Authority: CN
Inventors: 马振凯; 任建举; 张嶙峰
Original assignee: Dingzhou Dongming Mine Support Equipment Co ltd
Current assignee: Dingzhou Dongming Mine Support Equipment Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-04-05
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to the technical field of coal industry, in particular to a migration system of an advance reinforcing support bracket of a stope face. The utility model conveys the advanced reinforcing support bracket to be withdrawn to the designated position through the closed-loop conveying mechanism, realizes the mechanized operation of the whole process of the advance support bracket withdrawing and the advance support movement, greatly reduces the manual strength of the advance support, eliminates the potential safety hazards of the advance support withdrawing, the advance support movement and the support, and solves the problems of uneven roadway bottom plate, narrow space and difficult advance reinforcing support bracket withdrawing, the advance reinforcing support bracket moving and the advance support. The utility model is mainly applied to the advance support of the stope face and has huge application prospect in coal mines.

Description

Migration system of advance reinforcing support of stope face

Technical Field

The utility model relates to the technical field of coal industry, in particular to a migration system of an advance reinforcing support bracket of a stope face.

Background

In order to prevent tunnel surrounding rock deformation, movement and damage caused by the superposition of the advance supporting pressure of the coal face and the supporting pressure along the inclined direction and ensure the smoothness of upper and lower outlets of the working face, advance reinforcing support is required to be adopted in two tunnels of the coal face. The most distinctive feature of forepoling is that forepoling equipment needs to be moved forward continuously as the coal face is pushed forward. According to the moving method of the domestic advance support equipment, the advance support can be divided into five categories, namely manual moving, stepping moving, automatic moving of a crawler, carrying and single-track crane lifting.

At present, the manual transportation advance support equipment has the outstanding problems of more people, low efficiency, high transportation difficulty, high labor intensity of workers, frequent safety accidents in the transportation process, serious influence on the improvement of coal yield and the like.

The stepping hydraulic support can be divided into an integral advance support hydraulic support and a split type advance support group, and the stepping moving mode has the main problem that a top plate must be repeatedly supported for the moving requirement of the advance support, so that the top plate is easy to break, and the safety management and the maintenance of the top plate are not facilitated. The self-moving mechanism used by the stepping hydraulic support can cause serious damage to the roadway bottom plate;

the crawler walking type advance support is a mode of moving a support under pressure, the sliding friction generated by the mode of moving the support can seriously affect the service life of the support, the defects of large forward resistance, unstable walking and the like can be brought, and the safety of roadway personnel is easily harmed. Meanwhile, when the bottom plate is soft or goes up a slope, the crawler walking hydraulic support is difficult to move.

The forepoling support group of trackless rubber-tyred car transport has following problem, when the bottom heave or soft mire appear in the tunnel bottom plate, the vehicle all is difficult to pass under the unloaded condition. The diesel engine is used as power, and the crossheading tail gas is easy to exceed the standard and give an alarm. Meanwhile, the automobile transportation system occupies a large space and has relatively poor safety.

When the monorail crane is used for hoisting and transporting the advance support equipment, the monorail crane takes an anchor rod (cable) above a roadway as a suspension point, and the monorail crane also needs to be repeatedly transported forwards and installed along with the forward movement of a working surface, so that the advance support workload is increased. And the single track hangs the hanging point and is easily influenced by installation quality firmly enough and easily drops and cause injury accident, and the single track hangs when transporting advance support equipment and freely swings in the middle of the tunnel easily, has very big potential safety hazard.

With the continuous increase of the advancing speed of the working face and the height of the roadway, the migration requirement of the crossheading advanced reinforcement support equipment is continuously improved, the advance support migration speed of the coal face is improved on the premise of ensuring safety to meet the mining requirement of the working face, the current era theme of coal mine mechanization and people reduction can be met, and the advanced support integrated equipment becomes a technical problem which needs to be solved urgently at present.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a method and a system for moving an advance reinforcing and supporting bracket of a stope face, which aim to solve the technical problems in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in a first aspect, the utility model provides a method for moving a forepoling support of a stope face, which comprises the following steps: and conveying the forepoling support bracket to be withdrawn to a specified position by a closed-loop conveying mechanism.

In a second aspect, the present invention provides a migration system for a forepoling support of a stope face, comprising: and the closed-loop conveying mechanism is used for conveying the forepoling support bracket to be retracted to a specified position.

As a further technical solution, the closed-loop conveying mechanism forms a closed-loop motion above and below the forepoling support bracket.

As a further technical solution, the closed loop type conveying mechanism forms a closed loop movement below the forepoling support bracket.

As a further aspect, the closed-loop type transport mechanism includes: an endless conveyor belt, an endless conveyor chain, or an endless conveyor cable.

As a further aspect, the closed-loop type transport mechanism includes: driving the machine head;

the driving machine head provides a power source for the annular conveying belt, the annular conveying chain or the annular conveying rope.

As a further technical solution, the driving head includes: the pushing mechanism, the supporting mechanism and the driving mechanism; the pushing mechanism is connected with the supporting mechanism; the supporting mechanism is supported between the top plate and the bottom plate of the roadway through a supporting oil cylinder; the pushing mechanism is connected with the driving mechanism through a push-pull oil cylinder; the driving mechanism is used for driving the annular conveying belt, the annular conveying chain or the annular conveying rope to transmit.

As a further technical scheme, a driven wheel is arranged on a cross beam of the advance reinforcing support bracket; the driving machine head is connected with a driving wheel; the annular conveying belt, the annular conveying chain or the annular conveying cable are arranged around the driving wheel and the driven wheel in an encircling mode.

As a further technical scheme, the forepoling support is provided with a top extension mechanism on a cross beam thereof.

As a further technical solution, the jacking mechanism includes: the first jacking unit and the second jacking unit; the first jacking unit comprises support oil cylinders for carrying out bidirectional jacking above and below the cross beam; the second jacking unit comprises a supporting oil cylinder which carries out jacking action above the cross beam.

As a further technical scheme, the advance reinforcing support is provided with an oil accumulator.

As a further technical scheme, the method comprises the following steps: the carrying platform is used for clamping the forepoling support; the carrying platform moves synchronously with the closed loop type conveying mechanism.

As a further technical scheme, a hydraulic clamping device is arranged on the carrying platform and used for clamping the cross beam of the advanced reinforcing support bracket.

As a further technical scheme, the carrying platform is provided with a lifting platform; the lifting platform is used for driving the hydraulic clamping device to move up and down; the lifting platform is hung on an annular conveying belt, an annular conveying chain or an annular conveying rope of the closed-loop conveying mechanism.

As a further technical solution, the carrying platform is provided with a balance support leg.

As a further technical solution, the carrying platform is provided with a translation mechanism; the translation mechanism is arranged on the lifting platform and used for driving the hydraulic clamping device to move horizontally.

As a further technical solution, the carrying platform is provided with a rotating mechanism; the rotating mechanism is arranged on the translation mechanism; the hydraulic clamping device is arranged on the rotating mechanism; the rotating mechanism is used for driving the hydraulic clamping device to horizontally rotate.

As a further technical scheme, a manipulator is arranged on the carrying platform.

By adopting the technical scheme, the utility model has the following beneficial effects:

according to the migration system and the migration method for the advanced reinforcing support bracket of the stope face, the closed-loop type transportation mechanism is used for transporting the advanced reinforcing support bracket to be withdrawn to the designated position, so that the mechanized operation of the whole process of the advance support withdrawal and migration is realized, the labor intensity of the advance support is greatly reduced, the potential safety hazards of the advance support withdrawal, migration and support are eliminated, and the problems that a roadway bottom plate is uneven, the space is narrow, and the advance reinforcing support bracket is difficult to support, withdraw and migrate are solved. The utility model is mainly applied to the advance support of the stope face and has huge application prospect in coal mines.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of a first form of a haulage system for a forepoling support of a stope face in accordance with an embodiment of the present invention;

FIG. 2 is a perspective view of the forepoling bracket shown in FIG. 1;

FIG. 3 is a side view of the forepoling support shown in FIG. 1;

fig. 4 is a perspective view of a second form of a migration system for a forepoling support of a stope face in accordance with the practice of the utility model;

FIG. 5 is a perspective view of the forepoling bracket shown in FIG. 4;

figure 6 is a side view of the forepoling support shown in figure 4;

fig. 7 is a perspective view of a third form of a migration system for a forepoling support of a stope in accordance with the practice of the present invention;

fig. 8 is a perspective view of a fourth form of the migration system of a forepoling support for a stope face in accordance with the practice of the present invention;

FIG. 9 is a schematic structural view of a carrying platform provided in the practice of the present invention;

FIG. 10 is a schematic structural diagram of a driving handpiece according to an embodiment of the present invention;

FIG. 11 is a front view of a side hung self-shifting jumbolter provided in accordance with an embodiment of the present invention;

FIG. 12 is a side view of a side hung self-shifting jumbolter provided in accordance with an embodiment of the present invention;

fig. 13 is a perspective view of a fourth form of the migration system of a forepoling support for a stope face according to an embodiment of the present invention;

fig. 14 is a perspective view of a fifth form of the migration system of the forepoling support of the stope face according to the embodiment of the utility model.

Icon: 1-a closed loop type conveying mechanism; 2-a carrying platform; 3-advance reinforcing support; 4-transmission tail; 11-a pushing mechanism; 12-a support mechanism; 13-a drive mechanism; 14-a hydraulic station; 21-a rotation mechanism; 22-hydraulic clamping means; 23-a translation mechanism; 24-a lifting platform; 25-balanced support legs; 26-a rotary drive motor; 31-sprocket roller; 32-a first jacking unit; 33-a cross beam; 34-second jacking unit.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Example one

Referring to fig. 1, 4, 7 and 8, the embodiment provides a migration system of a forepoling support of a stope face. The transfer system includes a closed-loop transfer mechanism for transferring the advanced reinforced support stent to be withdrawn to a designated position.

The specific form of the closed-loop conveying mechanism can be flexibly arranged according to actual needs.

In this embodiment, preferably, the closed loop type endless transfer mechanism 1 includes: an endless conveyor belt, an endless conveyor chain, or an endless conveyor cable. It is to be understood that the closed loop type endless conveying mechanism 1 in the present embodiment may employ any one of an endless conveyor belt, an endless conveyor chain, or an endless conveyor cable. The endless conveyor belt, the endless conveyor chain or the endless conveyor cable in this embodiment is not a completely closed-loop movement, which can be understood as a kind of a dragsaw-type movement. Of course, the endless conveyor belt, the endless conveyor chain or the endless conveyor cable may be in a closed loop form or an open form, and may be flexibly adjusted according to actual needs.

In this embodiment, the endless conveyor belt, endless conveyor chain, or endless conveyor cable may be in a single-strand form, or may be in a double-strand or multi-strand form. Meanwhile, the closed loop type annular conveying mechanism 1 can also be divided into beam winding movement or non-beam winding movement. Various embodiments are described below with reference to the accompanying drawings.

For example: with reference to fig. 1, 2 and 3, a migration system of a pilot-reinforced support bracket of a stope by using a double endless conveyor chain is shown. The closed loop type annular conveying mechanism 1 adopts the movement of a winding beam.

For example: with reference to fig. 4, 5 and 6, a migration system of a pilot-reinforced support bracket of a stope using a single endless conveyor chain is shown. The closed loop type annular conveying mechanism 1 adopts the movement of a winding beam.

For example: referring to figure 7, there is shown a migration system employing a stope face lead reinforcing support bracket that does not move about the beam. The closed-loop type annular conveying mechanism 1 moves without winding a beam, a transmission tail is arranged below the advanced reinforcing support bracket 3, and a single chain wheel or a double chain wheel can be arranged at the transmission tail.

For example: referring to figure 8, there is shown a haulage system for a face advanced support system using an endless conveyor. The closed loop type annular conveying mechanism 1 adopts the movement of a winding beam.

For example: referring to figure 13, there is shown a migration system for a face advanced reinforcement support frame using a single endless conveyor chain. A horizontally disposed driven wheel is disposed below the advance reinforcing support frame 3, and a corresponding driving wheel is also disposed horizontally.

For example: referring to fig. 14, a follow-up chain drive system follow-up transport system is shown, in which a driven chain drive system pulley 44 is provided at the point of unloading the nose of the conveyor gate and a drive chain wheel 43 is provided at the point of unloading the reversed loader. As the scraper, the crusher and the reversed loader of the transportation crossheading are also pushed forward along with the push of the coal face, the chain transmission driving chain wheel 43 and the driven wheel 44 which are arranged at the unloading point of the transportation crossheading scraper and the reversed loader also move forward. A follow-up chain transmission system is formed.

When the fully mechanized mining face is pushed forward by a step pitch, firstly, a driving wheel of a chain transmission system is driven to drive a carrying platform to move below a support to be carried; operating the retracting manipulator 41 to grasp the top beam and the single columns at the two sides; recovering the piston rod of the monomer column to be contracted to the minimum height; operating the retracting manipulator 41 to rotate the beam by 90 degrees around the manipulator gripping point, and then placing the beam on the carrying platform 2 of the chain transmission system; operating the retracting manipulator 41 to enable the single column to rotate, translate and lift around a manipulator grabbing point, and placing the single column on the carrying platform 2 of the chain transmission system; and finishing the withdrawing process. Driving a driving wheel of the chain transmission system to drive the carrying platform and the carried support to move to a place to be re-supported; operating the re-supporting manipulator 42 to adjust the cross beam to a proper height and posture to be supported; operating the re-supporting manipulator 42 to align the two single columns and connect the two single columns with the cross beam; and extending a piston rod of the single column, and supporting the top beam to a preset position to complete re-support.

As shown in fig. 10, specifically, the closed-loop type transport mechanism includes: driving the machine head; the upper chain of the annular conveying chain is in transmission connection with the cross beam 33 of the forepoling support bracket; the lower chain of the annular conveying chain is fixedly connected with the carrying platform 2; the driving machine head provides power for the annular transmission chain. The driving handpiece includes: a pushing mechanism 11, a supporting mechanism 12 and a driving mechanism 13; the supporting mechanism 12 is supported between the roadway top and bottom plates through a supporting oil cylinder; the pushing mechanism 11 is connected with the supporting mechanism 12, and the pushing mechanism 11 is connected with the driving mechanism 13 through a push-pull oil cylinder; the top of the frame of the driving mechanism 13 is also provided with a support cylinder 17, and the frame of the driving mechanism 13 may adopt the structure in fig. 10. The hydraulic station 14 is connected with the supporting oil cylinder and the pushing mechanism 11. The driving machine heads can be arranged on the side of the roadway front wall and the side of the auxiliary wall in parallel respectively, and the situation that vehicles passing through the roadway can reach the tail through the chain wheel machine heads can be met. The self-moving principle is that a supporting mechanism 12 is supported between roadway top and bottom plates with certain prestress, a driving mechanism 13 is pushed out for 1 meter by using a pushing mechanism 11, then the supporting mechanism 12 is decompressed, an upper piston rod and a lower piston rod are withdrawn, the supporting mechanism 12 is pulled back for 1 meter by using the pushing mechanism 11, and then the supporting mechanism 12 is driven, so that the integral self-moving of the chain wheel driving head is realized, and meanwhile, the tensioning and the releasing of a chain can also be realized. Further, it may take other forms than this, as long as it can serve as a power source for the endless transmission chain.

In this embodiment, preferably, the carrying platform 2 is disposed at a lower portion of the endless conveyor chain, and the carrying platform 2 can reciprocate along with the endless conveyor chain to withdraw and transport the advanced reinforced support bracket to a specific position.

The advanced reinforcing support bracket 3 includes: a cross beam 33 and a jacking mechanism arranged on the cross beam 33; the forepoling support 3 is provided with a chain wheel roller 31 on a cross beam 33; the sprocket roller 31 is fitted to the upper chain of the endless conveyor chain.

Preferably, the top-extending mechanism of the forepoling support bracket 3 includes: a first and a second jacking

unit

32 and 34; the first jacking unit 32 includes a piston rod jacking in both directions above and below the cross member 33; the second jack unit 34 includes a piston rod that performs a jack action above the cross member 33. The upper supporting oil cylinder (the second jacking unit 34) of the advanced reinforcing support bracket 3 can be designed to be just away from the distance of the anchor rod or the anchor cable according to field supporting parameters so as to prevent the top of the upper supporting piston rod from damaging the supporting body. The number of the first and

second ejecting units

32 and 34 is not limited, and can be flexibly set according to actual needs.

Preferably, the forepoling support is provided with an oil reservoir 35.

The oil accumulator 35 is fixed on a connecting flange of the double-telescopic supporting oil cylinder and the cross beam and mainly used for storing hydraulic oil released by pressure relief after the safety valve is opened and returning the stored hydraulic oil to the piston rod oil cylinder after the pressure relief of the bracket. After the advance strengthening support is supported in the roadway, the top and bottom plates of the roadway at the advance supporting section are converged and deformed, so that the piston rod extending out of the top and bottom plates is caused, the pressure relief safety valve is arranged on the oil cylinder for avoiding the damage of the support, the opening pressure is set, the piston rod is contracted when the roadway top and bottom plates are deformed, the safety valve is opened, and the hydraulic oil discharged by the safety valve can be squeezed into the oil accumulator.

In the embodiment shown in fig. 9, the carrying platform 2 is preferably provided with a hydraulic clamping device 22, and the hydraulic clamping device 22 is used for fixing the cross beam 33 of the forepoling support. Preferably, the hydraulic clamping device 22 comprises a clamping base, the clamping plate at one end of the clamping base is connected by a hydraulic cylinder, and a tooth-shaped structure is arranged on the bottom surface of the clamping base. Correspondingly, the lower part of the beam of the advance reinforcing and supporting bracket is also provided with a toothed structure, so that the clamping firmness is ensured.

In particular, the carrying platform 2 is provided with a lifting platform 24; the lifting platform 24 is hung on the lower chain of the annular conveying chain; the trolley body is provided with a balance support column leg 25. The lifting platform 24 is a double scissor lifting platform. Meanwhile, the balance supporting legs are matched, so that the balance and lifting capacity of the carrying platform when the advanced reinforcing support is connected is met. The annular conveying chain is provided with a translation mechanism 23 and a rotating mechanism 21; the translation mechanism 23 is arranged on the lifting platform 24; the rotating mechanism 21 is arranged on the translation mechanism 23 and is driven by a rotating drive motor 26; (ii) a The hydraulic clamping device 22 is disposed on the rotating mechanism 21. The translation mechanism 23 and the rotation mechanism 21 meet the requirement of aligning and rotating the carrying platform to reduce the width when the advanced reinforced support bracket is retracted.

In summary, the utility model provides the system and the method for transporting the advanced reinforcing support bracket of the stope face, which transport the advanced reinforcing support bracket to be withdrawn to the designated position through the closed-loop type transport mechanism, realize the mechanized operation of the whole process of the advance support withdrawing and transporting, greatly reduce the labor intensity of the advance support, eliminate the potential safety hazard of the advance support withdrawing, transporting and supporting, and solve the problems of uneven roadway bottom plate, narrow space and difficult advance reinforcing support, withdrawing and transporting. The utility model is mainly applied to the advance support of the stope face and has huge application prospect in coal mines.

Example two

The second embodiment provides a migration method of a forepoling support of a stope face, which comprises the following steps: and conveying the forepoling support bracket to be withdrawn to a specified position by a closed-loop conveying mechanism. The embodiment is that another technical scheme aiming at the method is added on the basis of the first embodiment, the technical features disclosed by the first embodiment are also applicable to the embodiment, and the technical features disclosed by the first embodiment are not described repeatedly.

Specifically, the method of the migration method comprises the following steps:

the driving machine head drives the annular conveyor belt, the annular conveyor chain or the annular conveying rope to drive the carrying platform 2 to move to the position below the advanced reinforcing support bracket 3 to be retracted; lowering a lifting platform 24 through the carrying platform 2 to enable the balance support column legs 25 to be connected with the bottom, adjusting the balance support column legs 25 and the translation mechanism 23 to enable the hydraulic clamping device 22 to clamp the advanced reinforcement support bracket 3 to be retracted; relieving the pressure of the oil cylinder of the advance reinforcing support bracket 3, contracting the jacking mechanism, adjusting the lifting platform 24 to enable the advance reinforcing support bracket 3 to be lowered to a proper position, and rotating the advance reinforcing support bracket 3 to a specified width through the rotating mechanism 21; the lifting platform 24 and the balance support column legs 25 are contracted through the carrying platform 2, the machine head is driven to drive the annular conveyor belt, the annular conveyor chain or the annular conveyor cable, the forepoling support 3 is transported to a place needing to be supported, and the forepoling support 3 is rotated to a proper position through the rotating mechanism 21; and (3) lowering the carrying platform 2, lifting the advance reinforcing support bracket 3 to a proper position through the balance support column legs 25, and finally extending out of a top extending mechanism of the advance reinforcing support bracket 3 to enable the advance reinforcing support bracket to be tightly connected with the top and the bottom.

EXAMPLE III

In a third embodiment, a lateral hanging self-moving type jumbolter is provided, which is another technical scheme of adding a movable anchor drilling system on a forepoling support bracket 3 on the basis of the first embodiment, and the technical features disclosed in the first embodiment are also applicable to the first embodiment, and the technical features disclosed in the first embodiment are not repeatedly described.

The second embodiment provides a side-hung self-moving jumbolter, and it includes: the drilling machine comprises a drilling machine body 1000, a rotating mechanism, a translation mechanism and a driving mechanism; the drilling machine body 1000 is connected to the translation mechanism through the rotating mechanism, the drilling machine body 1000 can swing under the driving of the rotating mechanism, the translation mechanism is hung on the one-side rail 100 of the cross beam of the shield support (the advanced reinforcing support 3), and the driving mechanism is used for driving the translation mechanism to slide along the one-side rail 100 so as to drive the drilling machine body 1000 to move in a reciprocating mode. The side-hung self-moving jumbolter is arranged below a shield support in a side-hung mode, and horizontal movement and angle adjustment of the jumbolter body 1000 are achieved. This side-hung is from moving formula roofbolter can guarantee that rig body 1000 has more adjustment space, not only can drill and anchor the tunnel roof, but also can work two sides in the tunnel, avoids roofbolter adjusting position and the inconvenient drawback of angle in traditional technology, realizes the quick accuracy of roofbolter in actual construction and struts. It is worth to be noted that, in order to better understand the understanding of the "side hanging type", when the drilling machine body 1000 is driven by the rotating mechanism to swing, the drilling machine body can drill two sides of a roadway; when the drilling machine body 1000 does not swing, the angle of the support anchor rod is perpendicular to the top plate.

In this embodiment, preferably, the translation mechanism includes: a translation slide plate;

the sliding plate is provided with a hanging sliding part 500, the hanging sliding part 500 is hung on the unilateral rail 100 of the shield support (the advanced reinforced support), and the hanging sliding part 500 is connected with the unilateral rail 100 in a sliding manner. In this embodiment, the hanging sliding part 500 is preferably a slide groove structure with a side opening, and the upper and lower parts of the slide groove structure have L-shaped notches 200 oppositely arranged so as to be completely hung on the one-side rail 100 of the shield support. In this embodiment, the single-sided rail 100 may be a rectangular rail. The one-sided rail 100 includes: the shield support comprises a rail main body 400 and a transverse connecting plate 300 welded at the upper end of the rail main body 400, wherein the transverse connecting plate 300 is connected with a middle longitudinal plate of the I-shaped steel of the shield support, and the lower end of the rail main body 400 is connected with the lower surface of the I-shaped steel of the shield support. The hanging sliding parts 500 are hung on the upper and lower ends of the rail body 400, respectively.

The translation sliding plate is provided with a driving installation part, and the driving mechanism is installed on the driving installation part; in this embodiment, the driving installation part is preferably a plurality of installation holes opened on one side edge (thickness direction) of the translational sliding plate, and the installation holes are used for connecting with the bearing seat 800 of the driving mechanism.

Wherein, translation slide is provided with a rotatory installation department, and rotary mechanism installs in rotatory installation department. In this embodiment, the rotation mounting portion is preferably a central hole penetrating through an end surface of the translational sliding plate. Of course, the central bore may mount the bearing assembly as well as the bearing cap plate.

In this embodiment, preferably, the rotation mechanism includes: a rotating disk 1300;

a fixing clamp is arranged on one side of the rotating disk 1300 (of course, the fixing clamp is not limited and can be flexibly arranged according to actual needs, for example, the fixing clamp comprises a first fixing arm and a second fixing arm, and the first fixing arm and the second fixing arm are used for fixing the drilling machine body 1000, such as welding), and the fixing clamp fixes the drilling machine body 1000; the other side of the rotating plate 1300 is provided with a rotating shaft (similarly, the rotating shaft is not limited, and may be a rotating shaft structure), and the rotating shaft is installed on the rotating installation portion of the translational sliding plate through the bearing seat 800.

For the rotating disk 1300, there are two designs;

first, as a further technical solution, the end surface of the rotating disk 1300 is provided with two arc-shaped slots (the arc-shaped slots are concentric with the rotating disk 1300) which are centrosymmetric. Correspondingly, a positioning bolt is arranged at a position corresponding to the translational sliding plate, the positioning bolt is inserted into the arc-shaped groove, and the positioning effect on the rotating disk 1300 is realized through the fastening effect on the positioning bolt.

Secondly, as a further technical solution, two sections of positioning teeth which are centrosymmetric are arranged on the edge of the rotating disc 1300. Each section of positioning tooth is correspondingly engaged with a telescopic limiting pin, the end head of the telescopic limiting pin is provided with a toothed edge structure engaged with the positioning tooth, and the other end of the telescopic limiting pin is provided with a spring in a sleeved mode and is fixed in a shaft hole of a fixing seat on the translation sliding plate.

In this embodiment, preferably, the drive mechanism includes: a bearing seat 800, a driving sprocket 900, a transmission gear 700 and a transmission rack 600; the bearing block 800 is fixed to a driving installation part of the translational sliding plate; the driving sprocket 900 and the transmission gear 700 are coaxially installed at both ends of the bearing housing 800; the driving rack 600 is disposed on the lower surface of the shield support (disposed along the length thereof), and the driving gear 700 is engaged with the driving rack 600. Of course, the driving sprocket 900 may be connected to a belt connected to the motor 1200 or the motor to realize an automatic driving function. Further, the driving may be manually performed.

Example four

The fourth embodiment provides a specific way of a forepoling support, which is another technical solution added to the first, second and third embodiments, and the technical features disclosed in the first, second and third embodiments are also applicable to the first embodiment, and the technical features disclosed in the first, second and third embodiments are not described again.

In this embodiment, preferably, the advanced reinforcing support bracket 3 includes: a cross beam 33 and a jacking mechanism arranged on the cross beam 33; the forepoling support 3 is provided with a chain wheel roller 31 on a cross beam 33; the sprocket roller 31 is adapted to the upper chain of the endless conveyor.

unit

second ejecting units

32 and 34 is not limited, and can be flexibly set according to actual needs.

Wherein, the mechanism is stretched on the two-way top of control (first top is stretched unit 32) stretches out the top downwards and leans on the tunnel bottom plate, upwards stretches out the top and leans on the tunnel roof, realizes covering the both-way support of girder segment upside and downside fixed to will cover the fixed settlement high department that sets up in tunnel roof below of support, if meet tunnel roof unevenness, two-way flexible two sides are fixed, can make and strengthen in advance to strut and leave the clearance between support and the tunnel roof, dodge the bulge.

Furthermore, a plurality of bidirectional top extension mechanisms are arranged on the advance reinforcing support, and the advance reinforcing support is lifted to a set height by controlling the extension length of each bidirectional top extension mechanism above and below the advance reinforcing support.

The roadway roof or the roadway bottom plate is uneven, the shield beam plate is guaranteed to be kept at the set levelness by controlling the extension lengths of each bidirectional jacking and extending mechanism, and torque damage is avoided.

Further, the bidirectional jacking mechanism comprises: the device comprises an upper piston cylinder and a lower piston cylinder which are arranged in a reverse abutting mode, a piston rod of the upper piston cylinder extends upwards, a piston rod of the lower piston cylinder extends downwards, and the advanced reinforcing support bracket is fixed on a cylinder body of the upper piston cylinder and/or the lower piston cylinder.

Further, the upper piston cylinder and the lower piston cylinder are arranged along the same axis.

The damage caused by resultant force torque generated by the two piston cylinders acting on the advanced reinforcing support in the bidirectional top extension mechanism is avoided.

Furthermore, the upper piston cylinder and the lower piston cylinder are arranged in a staggered mode, and the axes of the upper piston cylinder and the lower piston cylinder are parallel.

The resultant moment on the advance reinforcing support bracket needs to be ensured to be zero.

Furthermore, a bearing cross beam is arranged, the lower piston cylinder positioned on the same side is arranged on the lower side of the bearing cross beam, and the upper piston cylinder is arranged on the upper side of the bearing cross beam.

Furthermore, a drilling skylight is arranged on the advanced reinforcing support bracket.

The anchor rod (cable) drilling equipment is used for drilling holes in the top of the roadway through the drilling skylight and installing the anchor rod (cable).

Furthermore, the advanced reinforced support bracket is provided with a mounting hole of the bidirectional jacking and extending mechanism.

Furthermore, the two-way top extension mechanisms are arranged on two sides of the advanced reinforced support bracket, and the distance between the two-way top extension mechanisms on the two sides is larger than the width of the tunneling machine.

The interference between the heading machine and the bidirectional jacking mechanism is avoided.

Furthermore, a bearing mechanism for bearing the shield support to move back and forth along the roadway is arranged on the heading machine.

The clamping device can fix the shield support on the tunneling machine, so that the shield support moves along with the tunneling machine in a roadway, and the tunneling machine conveys the shield support to a temporary support area.

Furthermore, a movement driving mechanism for driving the shield support to move along the extending direction of the roadway is arranged on the shield support.

The movable driving mechanism can enable the shield support to move in the roadway by itself, and the shield support is conveyed to the temporary supporting area by the movable driving mechanism.

Furthermore, the advanced reinforcement support bracket is of an integrally formed structure or a splicing structure, and the advanced reinforcement support bracket of the splicing structure is formed by connecting concave-convex splicing plates into a whole through high-strength bolts.

The supporting method of the roadway shield support comprises the following steps:

step one, according to sigma nP_{Lower 1}G or less, controlling the bidirectional jacking and stretching mechanism to jack downwards to extend all the bidirectional jacking and stretching mechanisms to be contacted with the roadway bottom plate, P_{Lower 1}Downward jacking force of the bidirectional jacking mechanism is adopted, and G is the gravity of the advanced reinforcing support bracket;

step two, according to the sigma nP_{Lower 2}G, increasing downward jacking force of the bidirectional jacking mechanism to lift the advanced reinforcing support bracket to a set height, P_{Lower 2}The downward jacking force of the bidirectional jacking and stretching mechanism after primary pressurization;

step three, according to sigma n P_{Upper 1}≤∑n P_{Lower 2}G, controlling the bidirectional jacking and stretching mechanisms to jack upwards to enable all the bidirectional jacking and stretching mechanisms to be in contact with the roadway top plate, P_{Upper 1}The two-way jacking mechanism is used for jacking and extending force upwards;

step four, according to P_{Lower part}＝P_{On the upper part}＝P_{Sign board}Increasing the upward and downward jacking force of the bidirectional jacking mechanism to a set value, wherein P_{Lower part}The downward jacking force of the bidirectional jacking and stretching mechanism after secondary pressurization, P_{On the upper part}The upward jacking force of the two-way jacking and stretching mechanism after pressurization is P_{Sign board}Is the set jacking force.

By adopting the technical scheme, the bidirectional jacking and extending mechanism supports the upper surface of the roadway bottom plate and the lower surface of the roadway top plate, so that the supporting mode is more stable, the advance reinforcing support bracket is prevented from moving and toppling, the height of the shield beam plate can be adjusted within a certain range, the shield beam plate in the traditional process is prevented from being in contact with the rugged roadway top plate to be distorted and deformed, and the safety of anchor rod supporting operators below the roadway tunneling support bracket is protected; a plurality of skylights for anchor rod (cable) operation are arranged on the advanced reinforcing support bracket, so that a plurality of anchor rod drilling machines can operate simultaneously, the drilling operation time is greatly reduced, and the drilling efficiency and the lane forming speed are improved; the advanced reinforcing support bracket is connected into a whole through the concave-convex splicing plate high-strength bolts, and meanwhile, the underground transportation, installation and operation mode is simpler and more convenient, the cost is lower, and the use condition is wider. According to the supporting method provided by the utility model, when the top plate and the bottom plate of the roadway are uneven, the torque of the advance reinforcing supporting bracket in the whole supporting process can be reduced, the supporting strength of the advance reinforcing supporting bracket is ensured, and safety guarantee is provided for construction operation of an operator below the advance reinforcing supporting bracket.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A migration system of a forepoling support of a stope face is characterized by comprising: the closed-loop type conveying mechanism is used for conveying the forepoling support bracket to be retracted to a specified position; the closed-loop conveying mechanism includes: an endless conveyor belt, an endless conveyor chain, or an endless conveyor cable.

2. The system of claim 1, wherein the closed loop conveyor mechanism moves in a closed loop around forepoling support beams above and below the forepoling support.

3. The system of claim 1, wherein the closed loop conveyor mechanism forms a closed loop motion beneath the forepoling support.

4. The system of claim 1, wherein the closed loop conveyor mechanism comprises: driving the machine head;

5. The migration system of a stope face lead-reinforced support bracket of claim 4,

the forepoling support is provided with a driven wheel on a beam;

the driving machine head is connected with a driving wheel;

the annular conveying belt, the annular conveying chain or the annular conveying cable are arranged around the driving wheel and the driven wheel in an encircling mode.

6. The migration system of the advancing reinforcing support bracket of the stope face according to claim 5, wherein the advancing reinforcing support bracket is provided with a top-extending mechanism on a cross beam thereof;

the mechanism that stretches on top includes: the first jacking unit and the second jacking unit;

the first jacking unit comprises support oil cylinders for carrying out bidirectional jacking above and below the cross beam;

the second jacking unit comprises a supporting oil cylinder which carries out jacking action above the cross beam;

the advanced reinforcing support bracket is provided with an oil reservoir.

7. A migration system of a stope face lead-reinforced support bracket according to any one of claims 1 to 3, comprising: the carrying platform is used for clamping the forepoling support;

the carrying platform moves synchronously with the closed loop type conveying mechanism.

8. The system for transporting a forepoling support of a stope according to claim 7, wherein a hydraulic clamping device is provided on the carrying platform for clamping the cross beam of the forepoling support.

9. The migration system of a pre-emphasis support bracket of a stope according to claim 8, wherein said carrying platform is provided with a lifting platform;

the lifting platform is used for driving the hydraulic clamping device to move up and down;

the lifting platform is hung on an annular conveying belt, an annular conveying chain or an annular conveying rope of the closed-loop conveying mechanism; the carrying platform is provided with a balance support column leg.

10. The migration system of a stope face advanced reinforcing support bracket according to claim 9, wherein the carrying platform is provided with a translation mechanism;

the translation mechanism is arranged on the lifting platform,

the translation mechanism is used for driving the hydraulic clamping device to move horizontally.

11. The system of claim 10, wherein the carrier platform is provided with a rotation mechanism;

the rotating mechanism is arranged on the translation mechanism;

the hydraulic clamping device is arranged on the rotating mechanism;

the rotating mechanism is used for driving the hydraulic clamping device to horizontally rotate.

12. The system of claim 11, wherein the carrier platform is provided with a manipulator.