CN115288714A - A small-turn compact open-type full-section rock roadheader - Google Patents

Abstract

The application discloses a small-turn compact open-type full-section rock roadheader, comprising: a main girder is installed with a main drive and a support shoe propulsion system that can drive the main drive to move; a rear supporting system is installed with a bolt supporting The second bolter system; the cutter head is installed in front of the main drive, and the main drive can drive the cutter head to rotate; the cutter head is installed with a slag discharge system that can transport rock slag; the main drive peripheral side is installed with a guard that can stick to the hole wall shield; the peripheral side of the support shoe propulsion system is equipped with the first bolt drilling rig system for bolt support and the advanced drilling rig system for drilling and grouting reinforcement in front of the cutter head; installed between the main beam and the rear supporting system The back support that can hold the hole wall tightly. The above-mentioned small-turn compact open-type full-section rock roadheader has a compact main beam structure and shortens the overall length of the main beam, so that the rock roadheader can be adapted to small-turn rock tunnel excavation, and the application range of the rock roadheader is improved.

Description

A small-turn compact open-type full-face rock boring machine

technical field

The present application relates to the technical field of tunnel construction, in particular to a small-turn compact open-type full-face rock boring machine.

Background technique

The excavation methods of rock tunnels have been developed for a long time. There are mainly two excavation methods: manual drilling and blasting and rock boring machines, and the construction technology has matured. Among them, the full-face rock boring machine (TBM) has been widely used in China in recent years because of its high construction efficiency, safety and environmental protection, high degree of mechanization, and low labor intensity.

Due to the space required by the support system (steel arch assembly system, advanced drilling rig system, and bolter system) for the main beam structure of the existing open TBM, the main beam often needs to be made relatively long, and the 6m-level open TBM For example, the length of the main girder usually reaches 16m. The too long main beam structure greatly increases the empty roof distance and increases the risk of collapse in the support area; more importantly, the too long beam structure seriously restricts the turning radius of the open TBM, and the ordinary open TBM cannot Adapt to the requirements of small turns in tunnels.

Therefore, how to provide a small-turn compact open-type full-face rock boring machine that solves the above-mentioned technical problems is a technical problem that those skilled in the art need to solve urgently.

Contents of the invention

The purpose of this application is to provide a small-turn compact open-type full-face rock boring machine, the main beam structure is compact, and the total length of the main beam is shortened, so that the rock boring machine can adapt to the excavation of small-turn rock tunnels and improve the application of the rock boring machine scope.

In order to achieve the above purpose, the present application provides a small-turn compact open-type full-face rock boring machine, including a main beam and a rear supporting system connected to the rear of the main beam;

The main beam is equipped with a main drive and a shoe propulsion system, the shoe propulsion system is connected to the main drive, and the shoe propulsion system can drive the main drive to move;

The rear supporting system is equipped with a second rocker system, and the second rocker system can perform bolting;

Wherein, a cutter head is installed in front of the main drive, and the main drive can drive the cutter head to rotate; a slag discharge system is installed in the cutter head, and the slag discharge system can transport rock slag; A shield is installed on the side, and the shield can be attached to the hole wall; the first bolter system and the advanced drill system are installed on the periphery of the shoe propulsion system, and the first bolter system can perform bolt support. For protection, the advanced drilling rig system can carry out drilling and grouting reinforcement to the front of the cutter head; a rear support is installed between the main beam and the rear supporting system, and the rear support can tighten the hole wall.

In some embodiments, the shield includes a top shield, a first side shield, a second side shield, a first lap shield, and a second lap shield for being attached to different positions of the cave wall. shield and bottom shield, the first side shield and the second side shield are located on both sides of the top shield and the bottom shield, the first overlapping shield and the second Overlap shields are respectively located between the top shield and the first side shield and between the top shield and the second side shield.

In some embodiments, the advanced drilling rig system is located behind the shield, and both the first overlapping shield and the second overlapping shield are provided with holes reserved for the advanced drilling rig, and the advanced drilling rig The reserved holes are used for advanced drilling after the advanced drilling rig system passes through.

In some embodiments, the boot propulsion system includes:

Boots, used to stick to the cave wall;

a single-sided saddle mounted on the main beam;

a shoe cylinder, connected to the shoe, for driving the shoe to tighten the hole wall; and

a propulsion oil cylinder, connected to the main drive, and used to drive the main drive to move when the stayer shoe tightens the hole wall;

Wherein, there are at least two groups of the shoe and the shoe cylinder, and at least two groups are distributed on both sides of the main beam.

In some embodiments, the shield further includes a torque cylinder, the torque cylinder is connected to the spreader cylinder, and the torque cylinder is used to drive the spreader cylinder to move, and the driving direction of the torque cylinder is the same as that of the spreader cylinder. The drive direction of the shoe cylinders varies within the tunnel section.

In some embodiments, a main thrust cylinder lug is provided behind the main drive, and the propulsion cylinder is hinged to the main thrust cylinder lug.

In some embodiments, the first rocker system is arranged radially along the tunnel section, and a rotary speed reducer is arranged on the base of the first rocker system, so that the first rocker system Work in radial areas.

In some embodiments, the first rock bolter system is arranged on the peripheral side of the propulsion cylinder, and the lead drilling rig system is arranged on the peripheral side of the shoe cylinder.

In some embodiments, the main beam lowers gradually from the front to the rear, that is, its upper surface at the rear is lower than the upper surface at the front.

In some embodiments, the main beam includes a connected first beam body and a second beam body, and is gradually lowered from the first beam body to the second beam body; the first beam body is installed with The main drive, the second beam body is installed with the shoe propulsion system.

With respect to the above-mentioned background technology, the small-turn compact open-type full-face rock boring machine provided by this application includes a cutter head, a slag discharge system, a shield, a main drive, a first bolter system, a main beam, an advanced drilling rig system, Gripper propulsion system, back support, second rod bolter system and back kit system. Among them, the rear supporting system is connected to the rear of the main beam, the main drive and the shoe propulsion system are installed on the main beam, the shoe propulsion system is connected to the main drive, the second rock bolt system is installed on the rear supporting system, and the cutter head is installed in front of the main drive , the slag discharge system is installed in the cutter head, the shield is installed on the side of the main drive, the first bolter system and the advanced drilling rig system are installed on the side of the shoe propulsion system, and the rear support is installed between the rear of the main beam and the rear supporting system between. The small-turn compact open-type full-section rock boring machine has a compact main beam structure and shortens the total length of the main beam, so that the rock boring machine can adapt to small-turn rock tunnel excavation, and the applicable range of the rock boring machine is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present application, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a structural schematic diagram of a small-turn compact open-type full-face rock boring machine provided by the embodiment of the present application;

Fig. 2 is A-A schematic diagram among Fig. 1;

Fig. 3 is a schematic structural diagram of the shield provided by the embodiment of the present application;

Fig. 4 is a schematic structural diagram of the main girder provided by the embodiment of the present application.

in:

1-cutterhead, 2-slag discharge system, 3-shield, 4-main drive, 5-first bolter system, 6-main beam, 7-advanced drilling rig system, 8-shoe propulsion system, 9- Rear support, 10-Second bolter system, 11-Rear supporting system,

301-Top Shield, 302-First Side Shield, 303-Second Side Shield, 304-First Lap Shield, 305-Second Lap Shield, 306-Bottom Shield, 307-Advanced Rig Reserved hole, 401-main thrust cylinder lug seat, 601-first beam body, 602-second beam body, 801-stay shoe, 802-stay shoe cylinder, 803-torque cylinder, 804-unilateral saddle frame, 805- Push cylinder.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the drawings and specific embodiments.

Please refer to Figures 1 to 4, wherein Figure 1 is a schematic structural view of a small-turn compact open-type full-face rock boring machine provided by the embodiment of the present application, Figure 2 is a schematic diagram of A-A in Figure 1, and Figure 3 is an embodiment of the present application A schematic structural diagram of the provided shield, and FIG. 4 is a schematic structural diagram of the main beam provided in the embodiment of the present application.

In the first specific embodiment, the present application provides a small-turn compact open-type full-face rock boring machine, which mainly includes a cutter head 1, a slag discharge system 2, a shield 3, a main drive 4, and a first anchor Rod drilling rig system 5, main beam 6, advanced drilling rig system 7, shoe propulsion system 8, rear support 9, second rod bolter system 10 and rear supporting system 11, and the rear supporting system 11 is connected to the rear of main beam 6.

Wherein, the cutter head 1 is installed in the front of the main drive 4, and plays the role of breaking rocks.

The main drive 4 is installed on the main beam 6, and the main drive 4 plays a role in driving the cutter head 1 to rotate, so that the cutter head 1 breaks rocks when rotating.

The slag removal system 2 is installed in the cutter head 1, and the slag removal system 2 plays the role of transporting rock slag, and transports the cut rock slag to the rear of the tunnel when the cutter head 1 breaks rocks.

The shoe propulsion system 8 is installed on the main beam 6, the shoe propulsion system 8 is connected to the main drive 4, and the shoe propulsion system 8 plays the role of driving the main drive 4 to move, so that the main drive 4 and the cutter head 1 move forward under the push excavation.

The rear support 9 is installed between the main beam 6 rear and the rear supporting system 11, and the rear support 9 plays the role of tightening the cave wall.

The shield 3 is installed on the 4th peripheral side of the main drive, and the shield 3 plays the role of being close to the wall of the cave, stabilizing the roadheader and the tunnel when driving forward.

The advanced drilling rig system 7 is installed on the side of the spreader propulsion system 8, and the advanced drilling rig system 7 plays the role of drilling and grouting reinforcement in front of the cutter head 1, and improves the geological conditions of the cutter head 1 through drilling and grouting reinforcement.

The first rocker system 5 is installed on the peripheral side of the shoe propulsion system 8, and the second rocker system 10 is installed on the supporting system 11. The first rocker system 5 and the second rocker system 10 play a role in the tunnel The role of bolt support in different positions.

In this embodiment, when excavating, the shoe propulsion system 8 first tightens the cave wall to generate a force point that can push the main drive 4, and then directly pushes the main drive 4, and then pushes the cutter head 1 to dig forward; the main drive 4 Drive the cutter head 1 to rotate, and the shield 3 is close to the cave wall during excavation; after being pushed in place, the rear support 9 tightens the cave wall, and the shoe propulsion system 8 is retracted to complete the excavation of this section; repeat the above steps to realize continuous excavation .

In the support implementation process of bad geological conditions, when rockfall occurs above the cutterhead 1, the advanced drilling rig system 7 performs drilling and grouting reinforcement on the front of the cutterhead 1, and the first rocker system 5 and the second rocker system 10 for bolt support, and finally through the shotcrete system in the auxiliary system 11 for reinforcement.

The small-turn compact open-type full-face rock tunneling machine takes into account the support system and meets the support requirements. At the same time, the structure of the main beam 6 is compact, which greatly reduces the length of the main beam 6 and has more ingenious flexibility. It can adapt to the excavation of small-turn rock tunnels and improve the application range of rock boring machines.

In some embodiments, the shield 3 includes a top shield 301, a first side shield 302, a second side shield 303, a first overlapping shield 304, a second The lap shield 305 and the bottom shield 306, the first side shield 302 and the second side shield 303 are located on both sides of the top shield 301 and the bottom shield 306, the first lap shield 304 and the second lap shield The shields 305 are respectively located between the top shield 301 and the first side shield 302 and between the top shield 301 and the second side shield 303 .

In this embodiment, the shield 3 is driven by an oil cylinder, so that the shield 3 expands and tightens the wall of the cave. If the first side is left, then the second side is right. At this time, the first side shield 302 and the first overlapping shield 304 are located on the left side of the top shield 301 and the bottom shield 306, and the second side shield 303 and second overlapping shield 305 are located to the right of top shield 301 and bottom shield 306 .

In some embodiments, the advanced drilling rig system 7 is located behind the shield 3, and the first overlapping shield 304 and the second overlapping shield 305 are all provided with an advanced drilling rig reserved hole 307, which is used for the advanced drilling rig reserved hole 307. Carry out the advance drilling operation after passing through for the advance drilling rig system 7 .

In this embodiment, the advanced drilling rig system 7 located behind the shield 3 is arranged along the center of the tunnel, and the advanced drilling operation is performed through the advanced drilling rig reserved hole 307 reserved on the shield 3 .

In some embodiments, the spreader propulsion system 8 includes a spreader 801 , a spreader cylinder 802 , a torque cylinder 803 , a single-side saddle 804 and a propulsion cylinder 805 .

Among them, the unilateral saddle frame 804 is installed on the main beam 6; the shoe cylinder 802 has a fixed end and a driving end, and its two ends are respectively connected to the unilateral saddle frame 804 and the shoe 801, and the shoe cylinder 802 drives the shoe 801 to tighten Hole wall; the propulsion cylinder 805 has a fixed end and a drive end, and its two ends are respectively connected to the strut 801 and the main drive 4, and the propulsion cylinder 805 pushes the main drive 4 to dig when the strut 801 tightens the cave wall.

It should be noted that there are at least two sets of spreader shoes 801 and spreader cylinders 802, and at least two sets are distributed on both sides of the main girder 6; Two stayer cylinders 802 realize turning in the horizontal direction.

In this embodiment, during the excavation process, the extender cylinder 802 is stretched out, driving the extender 801 to tighten the wall of the cave, creating the force point of the propulsion cylinder 805; the propulsion cylinder 805 directly pushes the main drive 4 and then the cutter head 1 to Front excavation; the main drive 4 drives the cutter head 1 to rotate; the shield 3 sticks to the cave wall during excavation; after the propulsion cylinder 805 is pushed into place, the rear support 9 supports the shoe to stretch out to tighten the cave wall, and the support shoe cylinder 802 retracts to drive the support The shoe 801 leaves the cave wall; the propulsion cylinder 805 is retracted, and then the support shoe 801 is driven in place; the above steps are repeated to realize continuous excavation.

In the process of tunneling with small turns, the turning is realized by controlling the difference in the extension of the left and right two support shoe cylinders 802. When the extension of the left cylinder is greater than that of the right, the roadheader will use the tight left support shoe cylinder 802 as a fulcrum Deflection, that is, a horizontal left turn; when the stretching amount of the left cylinder is smaller than that of the right, the roadheader will use the braced right side shoe cylinder 802 as a fulcrum to deflect, that is, a horizontal right turn.

In some embodiments, the shield 3 further includes a torque cylinder 803 , the torque cylinder 803 is connected to the spreader cylinder 802 , and the torque cylinder 803 is used to drive the spreader cylinder 802 to move, and the driving direction of the torque cylinder 803 is the same as that of the spreader cylinder 802 different in the tunnel section.

In this embodiment, the shoe cylinder 802 is hung upside down on the main beam 6 through four torque cylinders 803 and a single-side saddle 804 , and vertical turning is realized by lifting and retracting the torque cylinder 803 .

In some embodiments, the main thrust cylinder lug 401 is provided behind the main drive 4 to provide a hinge position for the propulsion cylinder 805 so that the propulsion cylinder 805 is hinged with the main thrust cylinder lug 401 .

In this embodiment, the propulsion cylinder 805 is designed as a single piece on the left and right sides, and one end of the propulsion cylinder 805 is connected to the shoe 801, and the other end is hinged to the ear seat 401 of the main thrust cylinder on the main drive 4, which not only greatly reduces the tension of the main beam 6 space requirements, and the propulsion directly acts on the main drive 4, reducing the loss of propulsion conduction.

In some embodiments, the first rocker system 5 is arranged radially along the tunnel section, and the base of the first rocker system 5 is provided with a rotary reducer, so that the first rocker system 5 can carry out a radial area homework.

In this embodiment, the support system of the host machine area of the small-turn compact open-type full-face rock boring machine includes a first rock bolt system 5 , an advanced drill system 7 and a second rock bolt system 10 . The first rocker system 5 arranged above the propulsion cylinder 805 can perform operations in the radial 90° area, and the second rocker system 10 arranged on the rear supporting system 11 is located on the pulley, and can also perform operations in the radial 90° area homework.

In some embodiments, the first rock bolt system 5 is arranged on the side of the propulsion cylinder 805 , and the leading drilling rig system 7 is arranged on the side of the shoe cylinder 802 .

In this embodiment, while the support system meets the support requirements, it also makes full use of the space of the main girder 6, reduces the space between the top and the ceiling, and provides conditions for the shortening of the main girder 6.

In some embodiments, the structure of the main beam 6 is gradually lowered from the front to the rear, that is, its upper surface at the rear is lower than the upper surface at the front.

In this embodiment, through the gradual lowering of the main beam 6, more space is reserved above the main beam 6 for support.

In some embodiments, the main beam 6 includes a connected first beam body 601 and a second beam body 602, and is gradually lowered from the first beam body 601 to the second beam body 602; the first beam body 601 is installed with a main drive 4. The second beam body 602 is equipped with a shoe propulsion system 8 .

In this embodiment, the main beam 6 adopts a split type, the first beam body 601 and the second beam body 602 are connected together by bolts, the first beam body 601 is connected with the main drive 4 by bolts, and the second beam body 602 The rear is connected with a rear support 9.

The small-turn compact open-type full-section rock roadheader is innovatively designed, and the rock roadheader can adapt to the excavation of small-turn rock tunnels, greatly improving the scope of application of the rock roadheader; the main beam has a compact structure and greatly shortens the total length of the main beam. It provides the foundation for the small-turn excavation of the open TBM, and the small head distance increases the safety factor of the support area; at the same time, the main beam structure is gradually lowered from the front to the rear, which increases the space of the support area, makes the support more convenient, and improves the support efficiency ;Compared with the existing rock boring machine, the structure is compact, the space utilization rate is more reasonable, and it is convenient for transportation, on-site assembly and transition.

It should be noted that many of the components mentioned in this application are common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such relationship between these entities. Actual relationship or sequence.

The small-turn compact open-type full-face rock boring machine provided by the application has been introduced in detail above. In this paper, specific examples are used to illustrate the principles and implementation methods of the present application, and the descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application. It should be pointed out that those skilled in the art can make some improvements and modifications to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

Claims (10)

1. A small-turn compact open-type full-face rock boring machine, characterized in that it comprises a main beam (6) and a rear supporting system (11) connected to the rear of the main beam (6); The main beam (6) is equipped with a main drive (4) and a shoe propulsion system (8), the shoe propulsion system (8) is connected to the main drive (4), and the shoe propulsion system (8) can drive the main drive (4) to move; The rear supporting system (11) is equipped with a second rocker system (10), and the second rocker system (10) can perform bolting; Wherein, a cutterhead (1) is installed in front of the main drive (4), and the main drive (4) can drive the cutterhead (1) to rotate; a slagging system (1) is installed in the cutterhead (1) 2), the slag discharge system (2) can transport rock slag; the main drive (4) is equipped with a shield (3) around the side, and the shield (3) can be attached to the cave wall; the support shoe A first rocker system (5) and an advanced drilling system (7) are installed on the periphery of the propulsion system (8), the first rocker system (5) can carry out bolting, and the advanced drilling system ( 7) Drilling and grouting can be carried out on the front of the cutterhead (1) for reinforcement; a rear support (9) is installed between the main beam (6) and the rear supporting system (11), and the rear support ( 9) The cave wall can be braced tightly. 2. The small-turn compact open-type full-face rock boring machine according to claim 1, characterized in that, the shield (3) includes top shields (301) for sticking to different positions of the cave wall , the first side shield (302), the second side shield (303), the first overlapping shield (304), the second overlapping shield (305) and the bottom shield (306), the first The side shield (302) and the second side shield (303) are located on both sides of the top shield (301) and the bottom shield (306), and the first overlapping shield (304) and the second overlapping shield (305) are respectively located between the top shield (301) and the first side shield (302) and between the top shield (301) and the second side shield between shields (303). 3. The small-turn compact open-type full-face rock boring machine according to claim 2, characterized in that, the advanced drilling rig system (7) is located behind the shield (3), and the first lap The connecting shield (304) and the second overlapping shield (305) are all provided with a reserved hole (307) for the advanced drilling rig, and the reserved hole (307) for the advanced drilling rig is used for the advanced drilling rig system (7 ) after passing the advance drilling operation. 4. The small-turn compact open-type full-face rock boring machine according to any one of claims 1 to 3, characterized in that the spreader shoe propulsion system (8) includes: Boots (801), for sticking to the cave wall; A unilateral saddle frame (804), installed on the main beam (6); A shoe cylinder (802), connected to the shoe (801), used to drive the shoe (801) to tighten the hole wall; and A propulsion cylinder (805), connected to the main drive (4), used to drive the main drive (4) to move when the stay shoe (801) tightens the hole wall; Wherein, there are at least two sets of combinations of the spreader shoes (801) and the spreader oil cylinders (802), and at least two sets are distributed on both sides of the main beam (6). 5. The small-turn compact open-type full-face rock boring machine according to claim 4, characterized in that, the shield (3) also includes a torque cylinder (803), and the torque cylinder (803) is connected to the Gripper cylinder (802), the torque cylinder (803) is used to drive the spreader cylinder (802) to move, the driving direction of the torque cylinder (803) and the drive direction of the spreader cylinder (802) different in the tunnel section. 6. The small-turn compact open-type full-face rock boring machine according to claim 4, characterized in that, the rear of the main drive (4) is provided with a main thrust cylinder lug (401), and the thrust cylinder (805 ) is hinged with the ear seat (401) of the main thrust cylinder. 7. The small-turn compact open-type full-face rock boring machine according to any one of claims 1 to 3, characterized in that, the first bolter system (5) is radially arranged along the tunnel section, and the The base of the first rocker drilling system (5) is provided with a rotary reducer, so that the first rocker drilling system (5) can perform operations in the radial area. 8. The small-turn compact open-type full-face rock boring machine according to claim 4, characterized in that, the first bolter system (5) is arranged on the peripheral side of the propulsion cylinder (805), and the The advanced drilling rig system (7) is arranged on the peripheral side of the shoe oil cylinder (802). 9. The small-turn compact open-type full-face rock boring machine according to any one of claims 1 to 3, characterized in that, the main beam (6) is gradually lowered from the front to the rear structure, that is, its rear The upper surface is lower than the upper surface at the front. 10. The small-turn compact open-type full-face rock boring machine according to claim 9, characterized in that, the main beam (6) includes a connected first beam body (601) and a second beam body (602 ), and gradually lower from the first beam body (601) to the second beam body (602); the first beam body (601) is equipped with the main drive (4), and the second beam body The body (602) is equipped with said shoe propulsion system (8).

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