Tunneling system

Abstract

The invention belongs to the technical field of tunneling equipment with drilling machines or cutting tools, and particularly provides a tunneling system. The tunneling system comprises a main machine and a rear matching system connected to the rear end of the main machine, the main machine is a cantilever type tunneling machine, an arch frame assembling mechanism and a drilling machine mechanism are arranged on the main machine, and the rear matching system comprises a guniting bridge, a trailer connected to at least one of the front end and the rear end of the guniting bridge, a mixed spraying device and an annular conveyor supported by the guniting bridge and / or the trailer. The mixed spraying device comprises a guniting mechanical arm movably installed on the guniting bridge, the trailer carries corollary equipment of the tunneling system, and the annular conveyor is provided with an overhanging section which extends out of the rear corollary system in a forward overhanging mode and is located below the rear end of the main machine so as to be used for bearing and conveying muck discharged by the main machine backwards. According to the invention, the mechanical operation of the whole process of tunnel digging, supporting, spraying and transporting can be realized, so that the operation efficiency is improved and the construction organization management difficulty is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of tunneling equipment with a drilling machine or a cutting tool, and in particular relates to a tunneling system. Background Art

[0002] There are two main methods of tunnel excavation: drilling and blasting and mechanical methods. The excavation equipment used in the mechanical method includes cantilevered tunnel boring machines and full-face tunnel boring machines. The basic function of a cantilevered tunnel boring machine is to excavate and break rocks. It includes a chassis equipped with a crawler-type walking mechanism, a cantilever that can swing up and down and left and right on the chassis, a rock-breaking mechanism (usually a cutting head) on the cantilever, and a loading mechanism supported by the chassis. The loading mechanism is used to collect and transport the excavated debris backwards, specifically including a shovel and a conveyor. A full-face tunnel boring machine includes a main machine and a rear supporting system. The main machine includes a cutterhead for excavating and breaking rocks, a shield for protecting equipment and personnel, a propulsion cylinder, a support device, etc. The rear supporting system is connected to the rear of the main machine, which includes a connecting bridge and multiple trailers connected in sequence front and back. The trailer is used to install auxiliary equipment required for the excavation process. Take TBM (full-section hard rock tunnel boring machine) as an example. Its main machine is equipped with an arch assembly mechanism and an anchor drill, and the rear supporting system includes a mixing spraying device (concrete spraying device). TBM can carry out support operations in the rear while excavating in the front, and the whole machine has a high degree of integration.

[0003] Compared with full-face TBMs, cantilever TBMs have the advantages of strong flexibility and low cost, and are suitable for excavating tunnels with different cross-sectional shapes. However, during construction, in addition to excavation, other processes also require the use of other equipment and the configuration of corresponding staff teams. The equipment used includes arch frame trolleys for assembling arch frames, wet spraying trolleys for spraying concrete on the construction surface, and muck trucks for receiving and transporting excavated muck. This construction method requires multiple processes to be connected, there are a large number of misaligned scenes, the construction efficiency is not high, the construction process also requires a lot of manual participation, the construction organization and management are difficult, and there is also the problem of untimely support.

[0004] The patent document with application publication number CN113833486A discloses a multifunctional cantilever (tunnel) tunnel boring machine, which integrates an arch frame installation assembly for clamping and assembling arch frames, an anchor drilling assembly for drilling anchor bolts, and an arch frame lifting mechanism for lifting the arch frame. The arch frame installation assembly is installed on the left and right sides of the tunnel boring machine. The arch frame lifting mechanism can lift the arch frame behind the tunnel boring machine and transport it to the position of the arch frame installation assembly. The arch frame installation assembly clamps the arch frame and sends the arch frame to the assembly position. The anchor drilling assembly can perform locking anchor drilling operations on the arch frame.

[0005] The above-mentioned multifunctional cantilevered tunnel boring machine integrates the relevant mechanisms for installing arch frames and drilling anchors, which improves the construction efficiency to a certain extent. However, the multifunctional cantilevered tunnel boring machine does not have an integrated automatic spraying function. During construction, it is also necessary to equip a wet spraying trolley, which still requires the coordination and arrangement of different processes such as transporting arch frames, transporting slag, and spraying concrete. The problem of high difficulty in construction organization and management has not been completely solved, and the construction efficiency needs to be improved. Summary of the invention

[0006] The object of the present invention is to provide a tunneling system to solve the technical problems of insufficient functional integration and low construction efficiency of cantilever tunneling machines in the prior art.

[0007] To achieve the above purpose, the technical solution of the tunneling system provided by the present invention is: A tunneling system comprises a main machine and a rear supporting system connected to the rear end of the main machine, wherein the main machine is a cantilever tunneling machine, and is provided with an arch frame assembly mechanism for assembling arch frames and a drilling mechanism for drilling anchor holes, and the rear supporting system comprises a shotcrete bridge, a trailer connected to at least one of the front and rear ends of the shotcrete bridge, a mixing and spraying device for spraying concrete onto a working surface, and a ring conveyor supported by the shotcrete bridge and / or the trailer, the mixing and spraying device comprises a shotcrete manipulator movably mounted on the shotcrete bridge, the trailer is equipped with supporting equipment of the tunneling system, and the ring conveyor has an overhanging section which overhangs forward from the rear supporting system and is located below the rear end of the main machine, so as to receive and convey backward the debris discharged by the main machine.

[0008] As a further improvement, the main engine and the rear supporting system are connected by a flexible connecting cable.

[0009] As a further improvement, a buffer device is provided on at least one of the rear end of the main machine and the front end of the rear supporting system.

[0010] As a further improvement, the shotcrete bridge is located at the front end of the rear supporting system, and the trailer is connected to the rear end of the shotcrete bridge.

[0011] As a further improvement, the shotcrete bridge includes a gate-shaped bridge frame, and the trailer includes a gate-shaped vehicle frame. The space inside the bridge frame and the vehicle frame constitutes a driving passage for muck trucks and material transport trucks to pass through.

[0012] As a further improvement, the front end of the ring conveyor is located on the inner side of the bridge frame, and the rear end is located on the outer side of the top end of the frame. The space under the front end of the ring conveyor is sufficient for garbage trucks and material transport trucks to enter and exit.

[0013] As a further improvement, a material lifting device is also provided on the inner side of the bridge frame. The material lifting device is located on the lateral side of the ring conveyor and does not interfere with the ring conveyor.

[0014] As a further improvement, the arch frame assembly mechanism includes a left working arm, a middle working arm and a right working arm which are arranged in sequence along the horizontal direction and can swing up and down and left and right. Each working arm is provided with an arch grabbing device for grabbing the arch frame. The left and right working arms are respectively used to assemble the left and right side arches, and the middle working arm is used to assemble the top arch.

[0015] As a further improvement, a movable platform which can move forward and backward is provided on the main machine, and each working arm is installed on the movable platform.

[0016] As a further improvement, the main engine is also provided with an arch frame lifting mechanism for lifting the rear arch frame to the arch frame assembly mechanism, and the arch frame lifting mechanism includes a folding arm crane installed on a mobile platform.

[0017] As a further improvement, the drilling rig mechanism includes a drilling rig and a drilling rig mounting mechanism, the drilling rig mounting mechanism includes a first rotating mechanism and a second rotating mechanism whose rotating axes are perpendicular to each other, the second rotating mechanism is installed at the output end of the first rotating mechanism, the drilling rig is installed at the output end of the second rotating mechanism, and the first rotating mechanism is installed on the middle working arm.

[0018] The present invention belongs to a combination invention, and has the following beneficial effects: the cantilevered tunnel boring machine as the main machine in the present invention can excavate the tunnel in the front. When excavating the tunnel, the arch frame assembly mechanism provided on the main machine can promptly perform the arch frame assembly operation after the tunnel is excavated, and the drilling mechanism can drill anchor holes on the working face. The rear supporting system is connected to the main machine and can move forward with the cantilevered tunnel boring machine. Specifically, the rear supporting system includes a mixing spraying device that can spray concrete to the working face, wherein the spraying manipulator of the mixing spraying device can move along the spraying bridge to spray concrete to different positions of the tunnel. The trailer can carry the supporting equipment of the tunneling system, such as a concrete slurry tank, a spraying pump, an electric control cabinet, a pump station, etc., which realizes synchronous spraying support for tunneling. At the same time, the annular conveyor in the rear supporting system can receive and transport the slag discharged by the cantilevered tunnel boring machine main machine to the rear, so that the continuous transportation of the slag can be realized, which is convenient for the slag truck to receive and transport the slag. Compared with the prior art, the excavation system of the present invention can flexibly adapt to tunnel projects with different geological conditions and cross-sectional shapes. At the same time, it also highly integrates functions such as drilling anchor holes, arch support, shotcrete support, and slag transfer, thereby realizing mechanized operations of the entire process of tunnel excavation, support, shotcrete, and transportation, thereby improving operating efficiency and reducing the difficulty of construction organization and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A front view of an embodiment of a tunneling system of the present invention during construction; Figure 2 for Figure 1 Sectional view of the middle shotcrete bridge location; Figure 3 for Figure 1 a cutaway view of the mid-trailer position; Figure 4 This is a front view of the tunneling system embodiment of the present invention during construction (the ring conveyor is hidden); Figure 5 A top view of an embodiment of the tunneling system of the present invention during construction (the annular conveyor is hidden); Figure 6 for Figure 5 A partial enlarged view of the middle A; Figure 7 A schematic diagram of the structure of a shotcrete bridge in an embodiment of a tunneling system of the present invention; Figure 8 A schematic diagram of the structure of a trailer of an embodiment of a tunneling system in the present invention; Fig. 9 It is a structural schematic diagram of an arch mounting mechanism on a cantilever type tunnel boring machine main machine in an embodiment of a tunnel boring system in the present invention; Fig.10 for Fig. 9 A schematic diagram of the structure of the middle working arm; Fig.11 It is an axonometric view of the cantilever tunnel boring machine mainframe when the arch frame is assembled in the tunnel boring system embodiment of the present invention; Fig.12 This is an axial view of the cantilever tunnel boring machine main machine of the tunneling system embodiment of the present invention when assembling the arch frame.

[0020] Description of reference numerals: 1. Main machine; 2. Post-supporting system; 3. Track; 4. Muck truck; 101. Middle working arm; 102. Folding arm crane; 103. Right working arm; 104. Left working arm; 105. Connecting frame; 106. Cable chain; 107. Buffer device; 108. Arch grabbing device; 109. Frame; 110. Mobile platform; 111. Hanging basket; 112. Drilling rig; 113. First slewing mechanism; 114. Second slewing mechanism; 201. Shotcrete bridge; 202. Trailer; 203. Circular conveyor; 204. Working platform; 205. Shotcrete manipulator; 206. Bracket; 207. Air duct; 208. Shotcrete pump; 209. Concrete tank; 210. Material lifting device. DETAILED DESCRIPTION

[0021] In order to solve the problem of insufficient integrated functions and low efficiency of cantilevered tunnel boring machines during construction, the basic technical concept of the present invention is to provide a combined tunneling system, wherein the tunneling system includes a main machine and a rear supporting system, wherein the main machine is a cantilevered tunnel boring machine integrated with an arch assembly mechanism and a drilling rig, and the rear supporting system is similar to the rear supporting system of a TBM, specifically including a shotcrete bridge, a trailer, a ring conveyor and a mixed spraying device, and the shotcrete bridge and the trailer are mainly used to carry supporting equipment, specifically, the shotcrete manipulator of the mixed spraying device is installed on the shotcrete bridge. The ring conveyor is used to receive the slag discharged to the rear by the cantilevered tunnel boring machine main machine, and to transport the slag to the rear to the slag truck or other forms of slag transport mechanism used for transporting slag during construction. Based on the above concept, the present invention can realize the mechanized operation of the entire process of tunnel excavation, support, spraying and transportation, thereby improving the operation efficiency and reducing the difficulty of construction organization and management.

[0022] The present invention is further described in detail below in conjunction with embodiments and drawings.

[0023] Specific embodiments of the tunneling system provided by the present invention: The excavation system provided in this embodiment is as follows: Figure 1 As shown, it includes a main machine 1 and a rear supporting system 2 connected to the rear end of the main machine 1. The main machine 1 is a cantilever type tunnel boring machine. Specifically, the main machine 1 is basically consistent with the cantilever type tunnel boring machine in the prior art, and includes a chassis equipped with a crawler walking mechanism, a cantilever arranged on the chassis and capable of swinging up and down and left and right, a rock breaking mechanism (cutting head) arranged on the cantilever, and a loading mechanism supported by the chassis, etc. The loading mechanism is used for collecting and transporting the excavated debris backwards, and specifically includes a shovel plate and a scraper conveyor. The excavation and slag transportation process of the main machine 1 is consistent with that of the cantilever type tunnel boring machine in the prior art, and will not be repeated.

[0024] The main machine 1 is integrated with an arch frame installation mechanism and a drilling mechanism. The arch frame installation mechanism can receive the arch frame sent from the rear and send the arch frame to the assembly position, cooperating with the staff to complete the arch frame assembly operation. The drilling mechanism is used to drill anchor holes on the tunnel working surface. In other words, the main machine 1 is integrated with a mechanism that can assist in assembling the arch frame and drilling anchor holes. During construction, there is no need to configure an additional arch frame trolley, anchor trolley, etc. At the same time, it can also provide timely support after excavation to improve safety.

[0025] The rear supporting system 2 includes a shotcrete bridge 201 and a trailer 202. The shotcrete bridge 201 is connected to the trailer 202, wherein there is at least one trailer 202, which can be connected to the front end or the rear end of the shotcrete bridge 201. Of course, when multiple trailers 202 are configured, the trailer 202 can be connected to the front and rear ends of the shotcrete bridge 201. The main function of the shotcrete bridge 201 and the trailer 202 is to carry the supporting equipment of the tunneling system during construction. In order to be able to spray concrete support in time during the construction process, the rear supporting system 2 also includes a mixing spraying device. The mixing spraying device refers to a device that can spray concrete onto the tunnel working face. The specific spraying principle is the existing technology. Figure 7 As shown, the mixed spraying device includes a spraying manipulator 205, which is installed on the spraying bridge 201. The spraying manipulator 205 can move relative to the spraying bridge 201. There are two directions of movement, specifically, along the front and rear direction and the peripheral direction of the spraying bridge 201, so that the spraying area covers different circumferential and axial positions of the tunnel during the spraying operation. Specifically, the spraying bridge 201 is provided with a bracket 206 that can move forward and backward relative to the spraying bridge 201, and the bracket 206 is provided with an arc-shaped rack. The spraying manipulator 205 is installed on a mounting seat that can move along the rack. As shown in FIG. Figure 8 As shown, the mixing and spraying device also includes a spraying pump 208 and a concrete tank 209 for storing concrete slurry. The spraying pump 208 is connected to the concrete tank 209 and the spraying pump 208 through a pipeline (not shown in the figure). The concrete slurry can be sprayed out from the spraying manipulator 205 after being pressurized by the spraying pump 208. As an embodiment, the spraying pump 208 and the concrete tank 209 are both mounted on the trailer 202. In other embodiments, one or all of the concrete tank 209 and the spraying pump 208 can be mounted on the spraying bridge 201.

[0026] like Figure 1 As shown, the rear supporting system 2 also includes an annular conveyor 203, which has an overhanging section that overhangs forward from the rear supporting system 2 and is located below the rear end of the main machine 1 (specifically below the rear end of the main machine's scraper conveyor). The annular conveyor 203 is used to receive the debris discharged from the cantilevered tunneling machine to the rear and transport the debris backward. Specifically, the annular conveyor 203 can be a belt conveyor or a scraper conveyor. When installing the annular conveyor 203, it can be flexibly installed according to the position of the shotcrete bridge 201 and the trailer 202 and the length of the annular conveyor 203, such as Figure 1 and Figure 7As shown, the shotcrete bridge 201 is located at the front end of the rear supporting system 2, the trailer 202 is connected to the rear end of the shotcrete bridge 201, and the length of the ring conveyor 203 is greater than the length of the shotcrete bridge 201. In fact, the ring conveyor 203 is supported by the shotcrete bridge 201 and the trailer 202. At this time, if the shotcrete bridge 201 is long and the ring conveyor 203 is short, the ring conveyor 203 can be supported only by the shotcrete bridge 201. In other embodiments, the trailer 202 can also be located at the front end of the rear supporting system 2, and there are more than one trailer 202. The length of the ring conveyor 203 is not greater than the length of all trailers 202. At this time, the ring conveyor 203 is supported by the trailer 202. However, setting the shotcrete bridge 201 at the front end of the rear supporting system 2 can ensure that the shotcrete position is as forward as possible, and timely and rapid support can be achieved.

[0027] During the construction process, the slag produced by the excavation of the main machine 1 can be transported backwards through the loading mechanism of the main machine 1 itself, and the circular conveyor 203 continues to transport the slag backwards after receiving it, and finally transports it to the slag truck 4 or other forms of slag transport mechanisms (such as slag conveyor belts) at the rear. By setting up the circular conveyor 203, this embodiment realizes the synchronous transportation of slag during construction, does not require additional personnel teams to transport slag, and avoids the mutual influence of slag transport vehicles and other equipment for reciprocating transportation, thereby improving efficiency.

[0028] like Figure 4-Figure 6 As shown, as a preferred method, the main machine 1 and the rear supporting system 2 are connected by a flexible connecting cable. Compared with other embodiments in which the connection is made by a pull rod or a dragging cylinder, the flexible connecting cable (such as a cable chain 106) can prevent the vibration of the main machine 1 during the excavation process from being transmitted to the rear supporting system 2, thereby protecting the rear supporting system 2. Further, as a protective means, the present embodiment adds a buffer device 107, which can be installed at the rear end of the main machine 1 or at the front end of the rear supporting system 2. Of course, the buffer device 107 can also be installed at the rear end of the main machine 1 and the front end of the rear supporting system 2. The specific buffer device 107 can be a rubber shock absorber or a spring shock absorber. By setting the buffer device 107, the present embodiment can prevent the rear supporting system 2 from accidentally rushing forward and colliding with the main machine 1, causing equipment damage. However, it should be noted that this is a safety measure. During actual construction, the excavation system moves very slowly. Therefore, in other embodiments, if the buffer device 107 is not configured, the rear supporting system 2 will not easily collide with the main machine 1 under normal circumstances.

[0029] In order to facilitate the connection between the host 1 and the subsequent supporting system 2, an independent connection frame 105 can be provided at the rear end of the host 1.

[0030] Both the trailer 202 and the shotcrete bridge 201 can travel along the bottom of the tunnel. Figure 1-Figure 3As shown, track steel wheels can be configured on the trailer 202 and the shotcrete bridge 201, and the track steel wheels can travel along the track 3 laid at the bottom of the tunnel. The track steel wheels have a stronger carrying capacity and can carry more and heavier equipment or materials. In other embodiments, for small tunnel projects, the weight of each equipment is not large, and the running mechanism configured by the shotcrete bridge 201 and the trailer 202 can also be a skid or a rubber wheel.

[0031] As an embodiment of a shotcrete bridge and a trailer, Figure 1-Figure 3 , Figure 7 and Figure 8 As shown, the shotcrete bridge 201 includes a gate-shaped bridge frame, and the trailer 202 includes a gate-shaped frame. The space inside the frame and the bridge frame constitutes a driving passage for the muck truck 4 and the material transport vehicle to pass through, wherein the material transport vehicle refers to a transport vehicle for transporting materials required during the excavation process, such as replenishing concrete slurry, related parts or materials for laying tracks. During the construction process, the muck truck 4 and the material transport vehicle can pass through the bridge frame and the frame to receive the muck or transport the materials to the place. In other embodiments, the shotcrete bridge 201 includes a flat-plate-shaped bridge frame, and the trailer 202 includes a flat-plate-shaped frame. At this time, the ring conveyor 203 can still be mounted on the shotcrete bridge 201 and the trailer 202, but there is no driving passage for the muck truck 4 and the material transport vehicle to pass through the inner side of the shotcrete bridge 201 and the trailer 202. In this way, if materials need to be transported, a lifting system can be set at the top of the tunnel. At the same time, the length of the ring conveyor 203 is appropriately extended to ensure that the muck can be directly transported to the rear of the excavation system.

[0032] like Figure 1 and Figure 7 As shown, the front end of the circular conveyor 203 is located on the inner side of the bridge frame, and the rear end is located on the outer side of the top of the frame. The space at the lower side of the front end of the circular conveyor 203 is sufficient for the muck truck 4 and the material transport truck to enter and exit. In this way, the material transport truck can be moved to the front position, so as to transport the materials to the front position. At the same time, it can also be ensured that the muck truck 4 moves to the front position. By utilizing the length of the circular conveyor 203, a group including at least two muck trucks 4 is set. During the construction process, one or more muck trucks 4 can be on standby below the circular conveyor 203. After the muck truck 4 behind it is full, the standby muck truck 4 can move back to the bottom of the circular conveyor 203 to receive the muck.

[0033] Furthermore, a material lifting device 210 is also provided on the inner side of the bridge frame of the shotcrete bridge 201. The material lifting device 210 is arranged on one side of the circular conveyor 203 and cannot interfere with the circular conveyor 203. The material lifting device 210 can lift the materials required for tunnel construction, such as the materials required for laying the track 3. Specifically, the material lifting device 210 includes the track 3 installed on the inner side of the bridge frame and a crane moving along the track 3. The material lifting device 210 can lift the materials transported by the material transport vehicle and continue to transport the materials forward, so that the staff can use them conveniently.

[0034] In addition, if Figure 7 As shown, a working platform 204 is also provided at the front end of the bridge frame of the shotcrete bridge 201, and workers can perform auxiliary work on the working platform 204. At the same time, a ventilation device is also provided on the working platform 204, and the ventilation device includes an air duct 207, which can purify the internal environment of the tunnel during the construction process.

[0035] like Figure 9-12 As shown, in this embodiment, the arch frame installation mechanism configured on the main machine 1 includes three working arms, namely, a left working arm 104, a middle working arm 101 and a right working arm 103 arranged in sequence in the horizontal direction, and the left working arm 104, the middle working arm 101 and the right working arm 103 can all swing up and down and left and right, and the left working arm 104, the middle working arm 101 and the right working arm 103 are all provided with an arch grabbing device 108, and the arch grabbing device 108 is used to grab the arch frame, cooperate with the swinging action of the working arm, and send the arch frame to the assembly position. Specifically, the arch grabbing device 108 can adopt the arch grabbing device in the prior art, such as the arch grabbing device including hydraulic clamps disclosed in the patent document with application publication number CN113833486A, or the arch grabbing device can also use a suction cup type arch grabbing device. The left working arm 104 and the right working arm 103 are respectively used to assemble the side arches on the left and right sides, and the middle working arm 101 is used to assemble the top arch. Different from the prior art, the present embodiment is equipped with three working arms, which can complete the assembly of more than three sections of the arch frame at one time, and the construction efficiency is higher. In addition, in order to ensure the safety of the workers, a hanging basket 111 is also installed on the left working arm 104 and the right working arm 103.

[0036] Furthermore, the main machine 1 is provided with a frame 109, on which a mobile platform 110 is installed, and the left working arm 104, the middle working arm 101 and the right working arm 103 are all installed on the mobile platform 110, so that the arch frame can be sent to a more forward position to ensure timely support. Of course, in other embodiments, the mobile platform 110 may not be configured. If the arch frame is to be sent to a more forward position, the working arm may be improved so that the working arm can be extended forward to a more forward position.

[0037] In addition, the main machine 1 is also provided with an arch frame hoisting mechanism, and the arch frame hoisting structure includes a folding arm crane 102, which can hoist the rear arch frame to the position of the arch frame assembly mechanism. Specifically, the folding arm crane 102 is installed on the mobile platform 110 and can move forward and backward with the mobile platform 110. At this time, the folding arm crane 102 also has a certain range of movement and can adapt to the rear transport of the arch frame to different positions. In other embodiments, if a hoisting system is configured at the top of the tunnel, it is not necessary to set the folding arm crane 102 on the main machine 1.

[0038] As an implementation method with a higher degree of integration, the drilling mechanism for drilling anchor holes can be integrated on the working arm. Specifically, the drilling mechanism includes a drilling machine 112 and a drilling machine installation mechanism for installing the drilling machine 112, such as Fig.10 As shown, the drilling rig installation mechanism includes a first slewing mechanism 113 and a second slewing mechanism 114, and the slewing axes of the first slewing mechanism 113 and the second slewing mechanism 114 are perpendicular to each other. Specifically, the first slewing mechanism 113 is installed on the middle working arm 101, the second slewing mechanism 114 is installed on the output end of the first slewing mechanism 113, and the drilling rig 112 is installed on the output end of the second slewing mechanism 114. Adjusting the first slewing mechanism 113 can realize the rotation of the second slewing mechanism 114 and the drilling rig 112 along the axis of the first slewing mechanism 113 as a whole, and adjusting the second slewing mechanism 114 can realize the rotation of the drilling rig 112 along the axis of the second slewing mechanism 114, so that the multi-degree-of-freedom action of the drilling rig 112 is realized to adapt to drilling operations at different positions. The first slewing mechanism 113 and the second slewing mechanism 114 can both be existing technologies, such as mechanisms including a hydraulic motor and a slewing reducer. Compared with the bolting rig configured separately in other embodiments, this drilling rig mechanism with a higher degree of integration can make the host 1 more compact.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunneling system, characterized in that: The invention comprises a main machine and a rear supporting system connected to the rear end of the main machine. The main machine is a cantilever tunneling machine. The main machine is provided with an arch frame assembling mechanism for assembling arch frames and a drilling mechanism for drilling anchor holes. The rear supporting system comprises a shotcrete bridge, a trailer connected to at least one of the front and rear ends of the shotcrete bridge, a mixing and spraying device for spraying concrete onto the working surface, and a ring conveyor supported by the shotcrete bridge and / or the trailer. The mixing and spraying device comprises a shotcrete manipulator movably mounted on the shotcrete bridge. The trailer is equipped with supporting equipment of the tunneling system. The ring conveyor has an overhanging section which protrudes forward from the rear supporting system and is located below the rear end of the main machine, so as to receive and transport backward the debris discharged by the main machine.

2. The tunneling system according to claim 1, characterized in that: The main machine and the supporting system are connected by flexible connecting cables.

3. The excavation system according to claim 2, characterized in that: A buffer device is provided on at least one of the rear end of the main machine and the front end of the rear supporting system.

4. The tunneling system according to any one of claims 1 to 3, characterized in that: The shotcrete bridge is located at the front end of the rear supporting system, and the trailer is connected to the rear end of the shotcrete bridge.

5. The excavation system according to claim 4, characterized in that: The shotcrete bridge comprises a gate-shaped bridge frame, and the trailer comprises a gate-shaped vehicle frame. The bridge frame and the space inside the vehicle frame constitute a driving passage for a slag truck and a material transport truck to pass through.

6. The excavation system according to claim 5, characterized in that: The front end of the ring conveyor is located on the inner side of the bridge frame, and the rear end is located on the outer side of the top of the frame. The space under the front end of the ring conveyor is sufficient for muck trucks and material transport trucks to enter and exit.

7. The tunneling system according to claim 6, characterized in that: A material lifting device is also provided on the inner side of the bridge frame. The material lifting device is located on the lateral side of the ring conveyor and does not interfere with the ring conveyor.

8. The tunneling system according to any one of claims 1 to 3, characterized in that the arch The assembling mechanism includes a left working arm, a middle working arm and a right working arm which are arranged in sequence along the horizontal direction and can swing up and down and left and right. Each working arm is provided with an arch grabbing device for grabbing the arch frame. The left and right working arms are respectively used to assemble the left and right side arches, and the middle working arm is used to assemble the top arch.

9. The tunneling system according to claim 8, characterized in that: A mobile platform which can move forward and backward is arranged on the main machine, and each working arm is installed on the mobile platform.

10. The tunneling system according to claim 9, characterized in that: The main machine is also provided with an arch frame hoisting mechanism for hoisting the rear arch frame to the arch frame assembling mechanism, and the arch frame hoisting mechanism comprises a folding arm crane installed on a mobile platform.

11. The tunneling system according to claim 8, characterized in that: The drilling rig mechanism includes a drilling rig and a drilling rig mounting mechanism. The drilling rig mounting mechanism includes a first rotating mechanism and a second rotating mechanism whose rotating axes are perpendicular to each other. The second rotating mechanism is installed at the output end of the first rotating mechanism, the drilling rig is installed at the output end of the second rotating mechanism, and the first rotating mechanism is installed on the middle working arm.

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