Transportation system and transportation method of advanced reinforced support bracket for mining working face

Abstract

The present invention relates to the technical field of coal industry, and in particular to a system and method for transporting an advance reinforced support bracket for a mining face. The present invention transports the advance reinforced support bracket to be withdrawn to a designated position through a closed-loop transport mechanism, thereby realizing mechanized operation of the entire process of advance support, withdrawal and transportation, greatly reducing the manual labor of the advance support, while eliminating the potential safety hazards of the withdrawal, transportation and support of the advance support, and solving the problems of uneven tunnel floor, narrow space, and difficulty in support, withdrawal and transportation of the advance reinforced bracket. The present invention is mainly used for advance support of mining faces, and has great application prospects in coal mines.

Description

Technical Field

[0001] The invention relates to the technical field of coal industry, and in particular to a transport system and a transport method for an advanced reinforced support bracket of a mining working face. Background Art

[0002] In order to prevent the deformation, movement and destruction of the tunnel surrounding rock caused by the superposition of the advance support pressure of the coal mining face and the support pressure along the inclined direction, and to ensure the smooth flow of the upper and lower exits of the working face, the two lanes of the coal mining face need to adopt advance reinforcement support. The most distinctive feature of advance support is that the advance support equipment needs to be continuously moved forward as the coal mining face moves forward. According to the domestic advance support equipment transportation method, advance support can be divided into five categories: manual transportation, step-by-step transportation, crawler self-movement, handling and monorail lifting.

[0003] At present, the manual transportation of advance support equipment has prominent problems such as large number of workers, low efficiency, great difficulty in transportation, high labor intensity of workers, and frequent safety accidents during the transportation process, which seriously affects the increase of coal production.

[0004] The step-type hydraulic support can be divided into an integral advance support hydraulic support and a split advance support group. The main problem of the step-type moving method is that the roof must be supported repeatedly for the needs of advance support movement, which can easily cause the roof to break and is not conducive to the safe management and maintenance of the roof. The self-moving mechanism used by the step-type hydraulic support will cause serious damage to the bottom plate of the tunnel;

[0005] Crawler-type advanced support is a method of moving the frame with pressure. The sliding friction generated by this method of moving the frame will seriously affect the service life of the support, and will bring defects such as large forward resistance and extremely unstable walking, which can easily endanger the safety of tunnel personnel. At the same time, when the bottom plate is soft or uphill, the crawler-type hydraulic support is difficult to move.

[0006] The advance support bracket group transported by the trackless rubber-wheeled vehicle has the following problems: when the bottom plate of the roadway is bulging or soft and muddy, the vehicle is difficult to pass even when it is unloaded. The diesel engine is used as the power, and the exhaust gas in the chute is easy to exceed the standard and alarm. At the same time, the automobile transportation system occupies a large space and has relatively poor safety.

[0007] When using a monorail crane to transport advance support equipment, the monorail crane uses the anchor rod (cable) above the tunnel as the suspension point. As the working surface moves forward, the monorail crane also needs to be moved forward and installed repeatedly, which increases the workload of advance support. In addition, the suspension point of the monorail crane is easily affected by the installation quality and is not firm enough, which is easy to fall and cause injuries. When transporting the advance support equipment, the monorail crane is easy to swing freely in the middle of the tunnel, which poses a great safety hazard.

[0008] With the continuous increase in the speed of working face advancement and the height of tunnels, the requirements for the transportation of advance enhanced support equipment in the drift are constantly increasing. How to increase the speed of advance support transportation of the coal mining face to meet the mining requirements of the working face while ensuring safety, while conforming to the current era theme of mechanization and reduction of manpower in coal mines, has become a technical problem that urgently needs to be solved in the advanced support technical equipment set.

[0009] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0010] The purpose of the present invention is to provide a method and system for moving an advanced reinforced support bracket of a mining working face to solve the technical problems existing in the prior art.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] In a first aspect, the present invention provides a method for transporting an advance reinforced support bracket of a mining face, which comprises the following steps: transporting the advance reinforced support bracket to be withdrawn to a designated position by a closed-loop transport mechanism.

[0013] In a second aspect, the present invention provides a system for transporting an advance reinforced support bracket for a mining face, comprising: a closed-loop transport mechanism for transporting the advance reinforced support bracket to be withdrawn to a designated position.

[0014] As a further technical solution, the closed-loop conveying mechanism forms a closed-loop motion above and below the advance reinforced support bracket.

[0015] As a further technical solution, the closed-loop conveying mechanism forms a closed-loop motion below the advance reinforced support bracket.

[0016] As a further technical solution, the closed-loop conveying mechanism includes: an endless conveyor belt, an endless conveyor chain or an endless conveyor rope.

[0017] As a further technical solution, the closed-loop conveying mechanism comprises: a driving head;

[0018] The driving head provides a power source for the endless conveyor belt, the endless conveyor chain or the endless conveyor rope.

[0019] As a further technical solution, the driving head includes: a pushing mechanism, a supporting mechanism and a driving mechanism; the pushing mechanism is connected to the supporting mechanism; the supporting mechanism is supported between the top and bottom plates of the tunnel by a supporting cylinder; the pushing mechanism is connected to the driving mechanism by a push-pull cylinder; the driving mechanism is used to drive an annular conveyor belt, an annular conveyor chain or an annular conveyor rope for transmission.

[0020] As a further technical solution, the advance reinforced support bracket is provided with a driven wheel on its crossbeam; the driving head is connected to a driving wheel; the annular conveyor belt, annular conveyor chain or annular conveyor rope is wrapped around the driving wheel and the driven wheel.

[0021] As a further technical solution, the advance reinforced support bracket is provided with a jacking mechanism on its crossbeam.

[0022] As a further technical solution, the jacking mechanism includes: a first jacking unit and a second jacking unit; the first jacking unit includes a supporting cylinder for bidirectional jacking above and below the beam; the second jacking unit includes a supporting cylinder for performing jacking above the beam.

[0023] As a further technical solution, the advance reinforced support bracket is provided with an oil reservoir.

[0024] As a further technical solution, it includes: a carrying platform for clamping the advance reinforced support bracket; the carrying platform moves synchronously with the closed-loop conveying mechanism.

[0025] As a further technical solution, a hydraulic clamping device is provided on the carrying platform, and the hydraulic clamping device is used to clamp the crossbeam of the advance reinforced support bracket.

[0026] As a further technical solution, the transport platform is provided with a lifting platform; the lifting platform is used to drive the hydraulic clamping device to move up and down; the lifting platform is mounted on the ring conveyor belt, ring conveyor chain or ring conveyor cable of the closed-loop conveying mechanism.

[0027] As a further technical solution, the carrying platform is provided with balancing support column legs.

[0028] As a further technical solution, the transport platform is provided with a translation mechanism; the translation mechanism is arranged on the lifting platform, and the translation mechanism is used to drive the hydraulic clamping device to move horizontally.

[0029] 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 to drive the hydraulic clamping device to rotate horizontally.

[0030] As a further technical solution, a manipulator is provided on the carrier platform.

[0031] By adopting the above technical solution, the present invention has the following beneficial effects:

[0032] The present invention provides a system and method for transporting the advanced reinforced support bracket for the mining face. The present invention transports the advanced reinforced support bracket to be withdrawn to a designated position through a closed-loop transport mechanism, thereby realizing mechanized operation of the entire process of advanced support support, withdrawal and transport, greatly reducing the labor intensity of the advanced support, while eliminating the potential safety hazards of the advanced support withdrawal, transport and support, and solving the problems of uneven roadway floor, narrow space, and difficulty in support, withdrawal and transport of the advanced reinforced support bracket. The present invention is mainly used for advanced support of mining faces, and has great application prospects in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A three-dimensional diagram of a first form of a transportation system for an advanced reinforced support bracket for a mining working face provided for the implementation of the present invention;

[0035] Figure 2 for Figure 1 A three-dimensional view of the advanced reinforced support bracket shown;

[0036] Figure 3 for Figure 1 A side view of the advanced reinforcement support bracket shown;

[0037] Figure 4 A perspective view of a second form of the transport system of the advance reinforced support bracket for the mining working face provided for the implementation of the present invention;

[0038] Figure 5 for Figure 4 A three-dimensional view of the advanced reinforced support bracket shown;

[0039] Figure 6 for Figure 4A side view of the advanced reinforcement support bracket shown;

[0040] Figure 7 A three-dimensional diagram of a third form of the transport system of the advance reinforced support bracket for the mining working face provided for the implementation of the present invention;

[0041] Figure 8 A perspective view of a fourth form of a transportation system for an advanced reinforced support support frame for a mining working face provided for the implementation of the present invention;

[0042] Fig. 9 A schematic diagram of the structure of the carrier platform provided for the implementation of the present invention;

[0043] Fig.10 A schematic diagram of the structure of a driving machine head provided by an embodiment of the present invention;

[0044] Fig.11 A front view of a side-mounted self-propelled anchor drilling rig provided by an embodiment of the present invention;

[0045] Fig.12 A side view of a side-mounted self-propelled anchor drilling rig provided by an embodiment of the present invention;

[0046] Fig.13 A three-dimensional diagram of a fourth form of a transportation system for an advanced reinforced support bracket for a mining working face provided by an embodiment of the present invention;

[0047] Fig.14 A stereoscopic diagram of the fifth form of the transportation system of the advance reinforced support bracket for the mining working face provided in an embodiment of the present invention.

[0048] Icons: 1-closed-loop transport mechanism; 2-carrying platform; 3-advance reinforced support bracket; 4-transmission tail; 11-pushing mechanism; 12-supporting mechanism; 13-driving mechanism; 14-hydraulic station; 21-rotating mechanism; 22-hydraulic clamping device; 23-translational mechanism; 24-lifting platform; 25-balancing support column leg; 26-rotating drive motor; 31-sprocket roller; 32-first extension unit; 33-crossbeam; 34-second extension unit. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0053] Embodiment 1

[0054] Combination Figure 1 , Figure 4 , Figure 7 , Figure 8 As shown, this embodiment provides a system for transporting an advanced reinforced support bracket for a mining face. The transport system includes a closed-loop transport mechanism for transporting the advanced reinforced support bracket to be withdrawn to a designated position.

[0055] The specific form of the closed-loop conveying mechanism can be flexibly set according to actual needs.

[0056] In this embodiment, preferably, the closed-loop annular conveyor mechanism 1 includes: an annular conveyor belt, an annular conveyor chain or an annular conveyor rope. It can be understood that the closed-loop annular conveyor mechanism 1 in this embodiment can adopt any one of an annular conveyor belt, an annular conveyor chain or an annular conveyor rope. In this embodiment, the annular conveyor belt, annular conveyor chain or annular conveyor rope is not a completely closed-loop motion, which can be understood as a kind of sawing motion. Of course, the annular conveyor belt, annular conveyor chain or annular conveyor rope can be in a closed-loop form or in an open form, which can be flexibly adjusted according to actual needs.

[0057] In this embodiment, the endless conveyor belt, endless conveyor chain or endless conveyor cable can be in the form of a single chain, a double chain or a multi-chain. At the same time, the closed-loop endless conveyor mechanism 1 can also be divided into beam-around motion or non-beam-around motion. Various specific embodiments are described below in conjunction with the accompanying drawings.

[0058] For example: Combine Figure 1 , Figure 2 , Figure 3 , the figure shows a system for transporting the advanced reinforced support bracket of the mining working face using double ring conveyor chains. The closed-loop ring conveyor mechanism 1 uses beam-circling motion.

[0059] For example: Combine Figure 4 , Figure 5 , Figure 6 , the figure shows a system for transporting the advanced reinforced support bracket of the mining working face using a single ring conveyor chain. The closed-loop ring conveyor mechanism 1 uses beam-circling motion.

[0060] For example: Combine Figure 7 The figure shows a system for transporting the advanced reinforcement support bracket of the mining face using non-beam-around motion. The closed-loop annular transmission mechanism 1 uses non-beam-around motion, and a transmission tail is arranged below the advanced reinforcement support bracket 3, and a single sprocket or a double sprocket can be arranged at the transmission tail.

[0061] For example: Combine Figure 8 As shown in the figure, a system for transporting the advanced reinforcement support bracket of the mining working face using an annular conveyor belt is shown. The closed-loop annular conveying mechanism 1 adopts beam-circling motion.

[0062] For example: Combine Fig.13 As shown, the figure shows a transport system of the advance reinforcement support bracket of the mining working face using a single ring conveyor chain. A horizontally arranged driven wheel is arranged below the advance reinforcement support bracket 3, and of course, the corresponding driving wheel is also arranged horizontally.

[0063] For example: Combine Fig.14 As shown in the figure, a follow-up chain transmission system is shown. A chain transmission system driven wheel 44 is set at the unloading point of the transport chute scraper head, and a chain transmission system driving sprocket 43 is set at the unloading point of the transfer machine. As the coal mining face moves forward, the scraper, crusher and transfer machine of the transport chute also move forward, so the chain transmission driving sprocket 43 and the driven wheel 44 set at the unloading point of the transport chute scraper and transfer machine also move forward. A follow-up chain transmission system is formed.

[0064] When the comprehensive mining working face advances forward by one step, first drive the driving wheel of the chain transmission system to drive the carrying platform to move to the bottom of the support to be transported; operate the retraction manipulator 44 to grab the top beam and the single columns on both sides; retract the piston rod of the single column to shrink it to the minimum height; operate the retraction manipulator 44 to rotate the crossbeam 90° around the gripping point of the manipulator, and then place the crossbeam on the carrying platform 2 of the chain transmission system; operate the retraction manipulator 44 to rotate, translate, lift and lower the single column around the gripping point of the manipulator, and place it on the carrying platform 2 of the chain transmission system; the retraction process is completed. At this time, drive the driving wheel of the chain transmission system to drive the carrying platform and the transported support to the place to be re-supported; operate the re-support manipulator 42 to adjust the crossbeam to the appropriate height and posture to be supported; operate the re-support manipulator 42 to align the two single columns and connect them to the crossbeam; extend the piston rod of the single column to support the top beam to the predetermined position to complete the re-support.

[0065] Combination Fig.10 As shown, specifically, the closed-loop transport mechanism includes: a driving head; the upper chain of the ring conveyor chain is drivingly connected to the crossbeam 33 of the advance reinforced support bracket; the lower chain of the ring conveyor chain is fixedly connected to the carrying platform 2; the driving head provides power for the ring conveyor chain. The driving head includes: a pushing mechanism 11, a supporting mechanism 12, and a driving mechanism 13; the supporting mechanism 12 is supported between the top and bottom plates of the tunnel by a supporting oil cylinder; the pushing mechanism 11 is connected to the supporting mechanism 12, and the pushing mechanism 11 is connected to the driving mechanism 13 by a push-pull oil cylinder; a supporting cylinder 17 is also provided on the top of the frame of the driving mechanism 13, and the frame of the driving mechanism 13 can be adopted Fig.10 The structure in. The hydraulic station 14 is connected to the supporting cylinder and the pushing mechanism 11. This type of driving machine head can be arranged in parallel one on each side of the main side and the auxiliary side of the tunnel, which can meet the requirement that the vehicle in the chute can reach the tail of the machine through the sprocket head. The principle of its self-movement is that the supporting mechanism 12 is supported between the top and bottom plates of the tunnel with a certain prestress, and the driving mechanism 13 is pushed out 1 meter by the pushing mechanism 11, and then the support mechanism 12 is depressurized, and its upper and lower piston rods are retracted. The supporting mechanism 12 is pulled back 1 meter by the pushing mechanism 11 and then the supporting mechanism 12 is lifted, realizing the overall self-movement of the sprocket driving machine head, and at the same time, the tensioning and relaxation of the chain can also be realized. In addition, in addition to this method, it can adopt other forms. It can be understood that as long as it can serve as a power source for the ring conveyor chain.

[0066] In this embodiment, preferably, the carrying platform 2 is provided at the lower part of the annular conveying chain, and the carrying platform 2 can reciprocate with the annular conveying chain to support, withdraw and transport the advance reinforced support bracket to a designated position.

[0067] The advanced reinforcement support bracket 3 includes: a crossbeam 33 and a jacking mechanism arranged on the crossbeam 33; the advanced reinforcement support bracket 3 is provided with a sprocket roller 31 on its crossbeam 33; the sprocket roller 31 is adapted to the upper chain of the ring conveyor chain.

[0068] Preferably, the extension mechanism of the advanced reinforcement support bracket 3 includes: a first extension unit 32 and a second extension unit 34; the first extension unit 32 includes a piston rod that performs bidirectional extension above and below the cross beam 33; the second extension unit 34 includes a piston rod that performs an extension action above the cross beam 33. The upper support cylinder (second extension unit 34) of the advanced reinforcement support bracket 3 can be designed with a spacing that just avoids the anchor rod or anchor cable according to the on-site support parameters to prevent the upper support piston rod from damaging the support body. The number of the first extension unit 32 and the second extension unit 34 is not limited and can be flexibly set according to actual needs.

[0069] Preferably, the advance reinforced support bracket is provided with an oil accumulator.

[0070] The oil accumulator is fixed on the connecting flange of the double telescopic support cylinder and the crossbeam. Its main function is to store the hydraulic oil released by the pressure relief after the safety valve is opened, and return the stored hydraulic oil to the piston rod cylinder after the support is depressurized. After the advance reinforcement support is supported in the tunnel, the top and bottom plates of the advance support section will converge and deform, causing the piston rod to extend from the top and bottom plates. At this time, in order to avoid damage to the support, a pressure relief safety valve will be installed on the cylinder, and an opening pressure will be set. When the top and bottom plates of the tunnel are deformed, the piston rod will contract, the safety valve will open, and the hydraulic oil leaked from the safety valve will squeeze into the oil accumulator.

[0071] Combination Fig. 9 As shown, in this embodiment, preferably, the carrier platform 2 is provided with a hydraulic clamping device 22, and the hydraulic clamping device 22 is used to fix the cross beam 33 of the advanced reinforcement support bracket. Preferably, the hydraulic clamping device 22 includes a clamping seat body, and the clamping plate at one end of the clamping seat body is connected by a hydraulic cylinder, and a tooth-like structure is provided on the bottom surface of the clamping seat body. Correspondingly, the lower part of the cross beam of the advanced reinforcement support bracket also has a tooth-like structure to ensure the firmness of the clamping.

[0072] Specifically, the carrying platform 2 is provided with a lifting platform 24; the lifting platform 24 is mounted on the lower chain of the ring conveyor chain; the trolley body is provided with a balancing support column leg 25. The lifting platform 24 is a double scissor lifting platform. At the same time, in conjunction with the balancing support legs, the balance and lifting capabilities of the carrying platform when connecting the advance reinforcement support bracket are met. The ring conveyor chain is provided with a translation mechanism 23 and a rotation mechanism 21; the translation mechanism 23 is arranged on the lifting platform 24; the rotation mechanism 21 is arranged on the translation mechanism 23 and driven by a rotation drive motor 26; the hydraulic clamping device 22 is arranged on the rotation mechanism 21. The translation mechanism 23 and the rotation mechanism 21 meet the alignment and rotation width reduction requirements of the carrying platform when retracting the advance reinforcement support bracket.

[0073] In summary, the present invention provides a system and method for transporting the advanced reinforced support bracket for the mining face. The present invention transports the advanced reinforced support bracket to be withdrawn to a designated position through a closed-loop transport mechanism, thereby realizing the mechanization of the entire process of advanced support support, withdrawal and transport, greatly reducing the manual labor of the advanced support, while eliminating the potential safety hazards of the withdrawal, transport and support of the advanced support, and solving the problems of uneven roadway floor, narrow space, and difficulty in support, withdrawal and transport of the advanced reinforced support bracket. The present invention is mainly used for advanced support of mining faces, and has great application prospects in coal mines.

[0074] Embodiment 2

[0075] Embodiment 2 provides a method for transporting an advanced reinforced support bracket of a mining face, which includes the following steps: transporting the advanced reinforced support bracket to be withdrawn to a designated position through a closed-loop transport mechanism. This embodiment adds another technical solution for the method on the basis of embodiment 1, and the technical features disclosed in embodiment 1 are also applicable to this embodiment, and the technical features disclosed in embodiment 1 will not be described again.

[0076] Specifically, the migration method comprises the following steps:

[0077] The driving head drives the annular conveyor belt, annular conveyor chain or annular conveyor rope to drive the carrying platform 2 to move to the advanced reinforced support bracket 3 to be withdrawn; the lifting platform 24 is lowered by the carrying platform 2 to make the balance support column leg 25 touch the bottom, and the balance support column leg 25 and the translation mechanism 23 are adjusted to make the hydraulic clamping device 22 clamp the advanced reinforced support bracket 3 to be withdrawn; the oil cylinder of the advanced reinforced support bracket 3 is depressurized, and the jacking mechanism is retracted, and the lifting platform 24 is adjusted to make the advanced reinforced support bracket 3 drop to a suitable position, and the hydraulic clamping device 22 is rotated to rotate the hydraulic cylinder 24 ... The mechanism 21 rotates the advance reinforced support bracket 3 to the specified width; the lifting platform 24 and the balancing support column legs 25 are retracted through the carrying platform 2, and the machine head drives the circular conveyor belt, circular conveyor chain or circular conveyor rope to move the advance reinforced support bracket 3 to the location where it needs to be supported, and the advance reinforced support bracket 3 is rotated to the appropriate position through the rotating mechanism 21; the carrying platform 2 is lowered, and the advance reinforced support bracket 3 is raised to the appropriate position through the balancing support column legs 25, and finally the top extension mechanism of the advance reinforced support bracket 3 is extended to make it tightly connected to the top and bottom.

[0078] Embodiment 3

[0079] Combination Figure 8 , Fig. 9 As shown, embodiment three provides a side-mounted self-propelled anchor drilling rig. This embodiment is another technical solution that adds a movable anchor drilling system to the advance reinforced support bracket 3 on the basis of embodiment one. The technical features disclosed in embodiment one are also applicable to this embodiment, and the technical features disclosed in embodiment one will not be repeated.

[0080] The second embodiment provides a side-mounted self-moving anchor drilling rig, which includes: a drilling rig body 1000, a rotating mechanism, a translation mechanism and a driving mechanism; the drilling rig body 1000 is connected to the translation mechanism through the rotating mechanism, and the drilling rig body 1000 can swing under the drive of the rotating mechanism, the translation mechanism is mounted on the single-side track 100 of the crossbeam of the shielding support (advanced reinforced support support 3), and the driving mechanism is used to drive the translation mechanism to slide along the single-side track 100 to drive the drilling rig body 1000 to move back and forth. The side-mounted self-moving anchor drilling rig is installed under the shielding support in a side-mounted manner, realizing the horizontal movement and angle adjustment of the drilling rig body 1000. The side-mounted self-moving anchor drilling rig can ensure that the drilling rig body 1000 has more adjustment space, not only can it drill and anchor the tunnel roof, but also can work on both sides of the tunnel, avoiding the disadvantages of the inconvenient position and angle adjustment of the anchor drilling rig in the traditional process, and realizing the fast and accurate support of the anchor machine in actual construction. It is worth explaining that in order to better understand the concept of "side-mounted", when the drilling rig body 1000 swings driven by the rotating mechanism, it can drill both sides of the tunnel; when the drilling rig body 1000 does not swing, the angle of its support anchor is perpendicular to the top plate.

[0081] In this embodiment, preferably, the translation mechanism comprises: a translation slide plate;

[0082] The translation slide is provided with a hanging sliding part 500, and the hanging sliding part 500 is hung on the single-side track 100 of the shielding bracket (the advanced reinforced support bracket), and the hanging sliding part 500 is slidably connected with the single-side track 100. In this embodiment, preferably, the hanging sliding part 500 is a side-opening slide structure, and the upper and lower parts of the slide structure have L-shaped notches 200 arranged oppositely, so that it can be completely hung on the single-side track 100 of the shielding bracket. In this embodiment, for the single-side track 100, it can be a rectangular track. The single-side track 100 includes: a track body 400 and a transverse connecting plate 300 welded to the upper end of the track body 400, the transverse connecting plate 300 is connected to the middle longitudinal plate of the I-shaped steel of the shielding bracket, and the lower end of the track body 400 is connected to the lower surface of the I-shaped steel of the shielding bracket. The hanging sliding part 500 is hung on the upper and lower ends of the track body 400 respectively.

[0083] Among them, the translational skateboard is provided with a driving mounting portion, and the driving mechanism is installed on the driving mounting portion; in this embodiment, preferably, the driving mounting portion is a plurality of mounting holes opened on one side edge (thickness direction) of the translational skateboard, and the plurality of mounting holes are used to connect with the bearing seat 800 of the driving mechanism.

[0084] The translation slide is provided with a rotating mounting portion, and the rotating mechanism is mounted on the rotating mounting portion. In this embodiment, preferably, the rotating mounting portion is a central hole penetrating the end surface of the translation slide. Of course, the central hole can be installed with a bearing assembly and a bearing cover plate.

[0085] In this embodiment, preferably, the rotating mechanism includes: a rotating disk 1100;

[0086] A fixing clamp is provided on one side of the rotating disk 1100 (of course, the fixing clamp is not limited and can be flexibly set according to actual needs, for example: the fixing clamp includes a first fixing arm and a second fixing arm, and the first fixing arm and the second fixing arm are used to fix the drilling rig body 1000, such as welding), and the fixing clamp fixes the drilling rig body 1000; a rotating shaft is provided on the other side of the rotating disk 1100 (similarly, the type of the rotating shaft is not limited, it can be a rotating shaft structure), and the rotating shaft is installed on the rotating mounting part of the translation slide through the bearing seat 800.

[0087] For the rotating disk 1100, there are two designs;

[0088] First, as a further technical solution, the end surface of the rotating disk 1100 is provided with two centrally symmetrical arc grooves (the arc grooves are arranged cocentrically with the rotating disk 1100). Correspondingly, a positioning bolt is arranged at a corresponding position of the translation slide, and the positioning bolt is inserted into the arc groove, and the positioning effect of the rotating disk 1100 is achieved by tightening the positioning bolt.

[0089] Second, as a further technical solution, two sections of centrally symmetrical positioning teeth are provided at the edge of the rotating disk 1100. Each section of the positioning teeth is correspondingly engaged with a telescopic limit pin, the end of the telescopic limit pin is provided with a tooth edge structure engaged with the positioning teeth, and the other end of the telescopic limit pin is provided with a sleeve spring and fixed in the shaft hole of the fixed seat on the translation slide.

[0090] In this embodiment, preferably, the driving mechanism includes: a bearing seat 800, a driving sprocket 900, a transmission gear 700 and a transmission rack 600; the bearing seat 800 is fixed to the driving mounting portion of the translation slide; the driving sprocket 900 and the transmission gear 700 are coaxially mounted at both ends of the bearing seat 800; the transmission rack 600 is arranged on the lower surface of the shielding bracket (arranged along its length), and the transmission gear 700 is meshed and connected with the transmission rack 600. Of course, the driving sprocket 900 can be connected to the motor 1200 or the motor by a belt to realize the automatic driving function. In addition, manual driving is also possible.

[0091] Embodiment 4

[0092] Embodiment 4 provides a specific method of providing an advance reinforced support bracket. This embodiment is another technical solution added on the basis of Embodiment 1, Embodiment 2 and Embodiment 3. The technical features disclosed in Embodiment 1, Embodiment 2 and Embodiment 3 are also applicable to this embodiment. The technical features disclosed in Embodiment 1, Embodiment 2 and Embodiment 3 will not be described repeatedly.

[0093] In this embodiment, preferably, the advance reinforced support bracket 3 includes: a crossbeam 33 and a jacking mechanism arranged on the crossbeam 33; the advance reinforced support bracket 3 is provided with a sprocket roller 31 on its crossbeam 33; the sprocket roller 31 is adapted to the upper chain of the ring conveyor belt.

[0094] Preferably, the extension mechanism of the advanced reinforcement support bracket 3 includes: a first extension unit 32 and a second extension unit 34; the first extension unit 32 includes a piston rod that performs bidirectional extension above and below the cross beam 33; the second extension unit 34 includes a piston rod that performs an extension action above the cross beam 33. The upper support cylinder (second extension unit 34) of the advanced reinforcement support bracket 3 can be designed with a spacing that just avoids the anchor rod or anchor cable according to the on-site support parameters to prevent the upper support piston rod from damaging the support body. The number of the first extension unit 32 and the second extension unit 34 is not limited and can be flexibly set according to actual needs.

[0095] Among them, the two-way extending mechanism (the first extending unit 32) is controlled to extend downward to rest on the tunnel bottom plate, and extend upward to rest on the tunnel roof plate, so as to realize two-way support and fixation on the upper and lower sides of the shielding beam plate, so that the shielding bracket is fixed at a set height below the tunnel roof plate. In case the tunnel roof plate is uneven, the two-way extension and double-sided fixation can leave a gap between the advance reinforced support bracket and the tunnel roof plate to avoid the protruding part.

[0096] Furthermore, a plurality of the bidirectional extending mechanisms are arranged on the advance reinforced support bracket, and the advance reinforced support bracket is lifted to a set height by controlling the extending length of each bidirectional extending mechanism above and below the advance reinforced support bracket.

[0097] The tunnel roof or tunnel floor is uneven. By controlling the different extension lengths of each two-way extension mechanism, the protective beam plate is ensured to remain at the set level to avoid torque damage.

[0098] Furthermore, the bidirectional extension mechanism includes: an upper piston cylinder and a lower piston cylinder arranged in opposite directions, the piston rod of the upper piston cylinder extends upward, the piston rod of the lower piston cylinder extends downward, and the advance reinforcement support bracket is fixed on the cylinder body of the upper piston cylinder and / or the lower piston cylinder.

[0099] Furthermore, the upper piston cylinder and the lower piston cylinder are arranged along the same axis.

[0100] Avoid damage caused by the combined torque generated by the two piston cylinders in the two-way extension mechanism acting on the advance reinforced support bracket.

[0101] Furthermore, the upper piston cylinder and the lower piston cylinder are arranged alternately so that their axes are parallel.

[0102] It is necessary to ensure that the resultant moment on the advance reinforced support bracket is zero.

[0103] Furthermore, a load-bearing crossbeam is provided, the lower piston cylinder located on the same side is provided on the lower side of the load-bearing crossbeam, and the upper piston cylinder is provided on the upper side of the load-bearing crossbeam.

[0104] Furthermore, a drilled skylight is provided on the advanced reinforced support bracket.

[0105] The anchor (cable) drilling equipment drills holes at the top of the tunnel through the drilling skylight for installing anchors (cables).

[0106] Furthermore, the advance reinforcement support bracket is provided with a mounting hole for the bidirectional extension mechanism.

[0107] Furthermore, the bidirectional jacking mechanism is arranged on both sides of the advance reinforced support bracket, and the spacing between the bidirectional jacking mechanisms on both sides is greater than the width of the tunnel boring machine.

[0108] Avoid interference between the tunnel boring machine and the two-way jacking mechanism.

[0109] Furthermore, the tunnel boring machine is provided with a bearing mechanism that carries the shielding support to move back and forth along the tunnel.

[0110] The clamping device can fix the shield support on the tunnel boring machine, so that the shield support moves with the tunnel boring machine in the tunnel, and the tunnel boring machine transports the shield support to the temporary support area.

[0111] Furthermore, the shielding support is provided with a moving driving mechanism for driving it to move along the extension direction of the tunnel.

[0112] The mobile driving mechanism can enable the shielding support to move in the tunnel by itself, and the mobile driving mechanism transports the shielding support to the temporary support area.

[0113] Furthermore, the advance reinforcement support bracket is an integrally formed structure, or a spliced ​​structure, and the advance reinforcement support bracket of the spliced ​​structure is a concave and convex spliced ​​plate connected into a whole by high-strength bolts.

[0114] The above-mentioned tunnel shield support support method comprises the following steps:

[0115] Step 1: According to ∑nP 下1 ≤G, control the two-way extension mechanism to extend downward until all the two-way extension mechanisms are in contact with the bottom plate of the roadway, P 下1 is the downward extension force of the bidirectional extension mechanism, and G is the gravity of the advanced reinforcement support bracket;

[0116] Step 2: According to ∑nP 下2 >G, increase the downward extension force of the bidirectional extension mechanism to lift the advanced reinforcement support bracket to the set height, P 下2 It is the downward extension force of the bidirectional extension mechanism after one-time pressurization;

[0117] Step 3: According to ∑n P 上1 ≤∑n P 下2-G, control the two-way jacking mechanism to jack up until all the two-way jacking mechanisms are in contact with the tunnel roof, P 上1 It is the upward extension force of the bidirectional extension mechanism;

[0118] Step 4: According to P 下 =P 上 =P 标 , increase the upward and downward extension force of the bidirectional extension mechanism to the set value, where P 下 is the downward extension force of the bidirectional extension mechanism after secondary pressurization, P 上 is the upward extension force of the two-way extension mechanism after pressurization, P 标 is the set top extension force.

[0119] By adopting the above technical scheme, the bidirectional jacking mechanism is supported on the upper surface of the tunnel bottom plate and the lower surface of the tunnel roof. This support method is more stable and avoids the movement and tipping of the advance reinforced support bracket. In addition, the height of the shielding beam plate can be adjusted within a certain range to avoid the shielding beam plate from contacting and twisting and deforming with the uneven tunnel roof in the traditional process, thereby protecting the safety of the personnel performing anchor support operations under the tunnel excavation shielding bracket; the advance reinforced support bracket is provided with multiple skylights for anchor (cable) operations, so that multiple anchor drilling rigs can operate simultaneously, greatly reducing the drilling operation time, and improving the drilling efficiency and tunneling speed; the advance reinforced support bracket is connected into a whole by high-strength bolts of the concave and convex splicing plate. At the same time, the underground transportation, installation and operation methods of the present invention are simpler, lower in cost, and have wider application conditions. The support method provided by the present invention can reduce the torque of the advance reinforced support bracket during the entire support process when the tunnel roof and tunnel floor are uneven, ensure the support strength of the advance reinforced support bracket, and provide safety protection for operators working under the advance reinforced support bracket.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for moving an advanced reinforced support bracket in a mining working face, characterized in that: The method comprises the following steps: transporting the advanced reinforced support bracket to be withdrawn to a designated position through a closed-loop transport mechanism; the closed-loop transport mechanism comprises: a transport platform for clamping the advanced reinforced support bracket; The carrying platform moves synchronously with the closed-loop conveying mechanism; the closed-loop conveying mechanism includes: an annular conveying chain; the carrying platform is arranged at the lower part of the annular conveying chain, and the carrying platform can move back and forth with the annular conveying chain to support and move the advanced reinforced support bracket to a designated position; the advanced reinforced support bracket includes: a crossbeam and a jacking mechanism arranged on the crossbeam; the advanced reinforced support bracket is provided with a sprocket roller on its crossbeam; the sprocket roller is adapted to the upper chain of the annular conveying chain; The extension mechanism of the advanced reinforcement support bracket includes: a first extension unit and a second extension unit; the first extension unit includes a piston rod that performs bidirectional extension above and below the crossbeam; the second extension unit includes a piston rod that performs an extension action above the crossbeam; The carrying platform is provided with a hydraulic clamping device, which is used to fix the crossbeam of the advance reinforced support bracket; the hydraulic clamping device includes a clamping seat body, and the clamping plate at one end of the clamping seat body is connected by a hydraulic cylinder, and a toothed structure is provided on the bottom surface of the clamping seat body, and the lower part of the crossbeam of the advance reinforced support bracket also has a toothed structure to ensure the firmness of the clamping; the carrying platform is provided with a lifting platform; the lifting platform is mounted on the lower chain of the annular conveyor chain; the carrying platform is provided with a balancing support column leg, and the lifting platform is a double scissors lifting platform. At the same time, in conjunction with the balancing support legs, the balancing and lifting capabilities of the carrying platform when connecting the advance reinforced support bracket are met, and the carrying platform is provided with a translation mechanism and a rotation mechanism; the translation mechanism is arranged on the lifting platform; the rotation mechanism is arranged on the translation mechanism and is driven by a rotation drive motor; the hydraulic clamping device is arranged on the rotation mechanism.

2. The method for moving the advanced reinforced support bracket of the mining working face according to claim 1 is characterized in that: The closed-loop conveying mechanism forms a closed-loop motion around the advance reinforcement support bracket crossbeam above and below the advance reinforcement support bracket.

3. The method for moving the advanced reinforced support bracket of the mining working face according to claim 2 is characterized in that: The closed-loop conveying mechanism forms a closed-loop motion below the advance reinforced support bracket.

4. The method for moving the advanced reinforced support bracket of the mining working face according to claim 3 is characterized in that: The closed-loop conveying mechanism comprises: a driving head; The driving head provides a power source for the annular conveying chain.

5. The method for moving the advanced reinforced support bracket of the mining working face according to claim 4 is characterized in that: The advanced reinforced support bracket is provided with a driven wheel on its crossbeam; The driving machine head is connected with a driving wheel; The annular transmission chain surrounds the driving wheel and the driven wheel.

6. The method for moving the advanced reinforced support bracket of the mining working face according to claim 5 is characterized in that: The advanced reinforced support bracket is provided with an oil accumulator.

7. The method for moving the advanced reinforced support bracket of the mining working face according to claim 6 is characterized in that: The carrying platform is provided with a translation mechanism; The translation mechanism is arranged on the lifting platform. The translation mechanism is used to drive the hydraulic clamping device to move horizontally.

8. The method for moving the advanced reinforced support bracket of the mining working face according to claim 7 is characterized in that: The carrying platform is provided with a rotating mechanism; The rotating mechanism is arranged on the translating mechanism; The hydraulic clamping device is arranged on the rotating mechanism; The rotating mechanism is used to drive the hydraulic clamping device to rotate horizontally.

9. The method for moving the advanced reinforced support bracket of the mining working face according to claim 8 is characterized in that: A manipulator is arranged on the carrying platform.

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