A tunneling machine main machine with bottom paving function and a tunneling machine

Abstract

The application provides a tunneling machine main machine with bottom paving function and a tunneling machine, and belongs to the technical field of tunneling equipment. The tunneling machine main machine comprises a shield body, the bottom of the shield body is provided with a bottom structure capable of forming a muck paving space between the bottom of the shield body and the bottom of a tunnel, the bottom of the shield body is further provided with a leveling structure for leveling muck falling to the bottom of the tunnel from the front end of a muck collecting device or / and a muck conveyor, and a muck tamping device is arranged in the shield body at the rear side of the leveling structure. The application completes the paving of muck at the bottom of the shield body while tunneling, avoids the interference between the bottom muck and the shield body, affects the propulsion of the main machine and the construction progress efficiency, reduces the link of manual bottom muck cleaning, and facilitates the subsequent entry and exit of trailers and personnel after the paving of the bottom is completed, thereby greatly saving the time cost.

Description

Technical Field

[0001] This invention relates to a tunneling machine host and a tunneling machine with a bottom-laying function, belonging to the technical field of tunneling equipment. Background Technology

[0002] A full-face tunneling machine (MTBM) is a large-scale tunneling equipment that integrates hydraulic, control, and electromechanical technologies. It is widely used in the construction of tunnels in various hard rock geological conditions. A MTBM mainly consists of multiple systems, including a cutterhead system, shield system, drive system, support system, propulsion system, lubrication system, hydraulic system, electrical control system, positioning and guidance system, and lining support system.

[0003] The bottom of a conventional shield is rounded to adapt to the tunnel cross-section. The excavated soil produced by the cutterhead is scraped by the rotating cutterhead and then fed into the main conveyor belt via a slag collection device. For example, the TBM main conveyor belt disclosed in Chinese invention patent application CN110966016A, in which, as the cutterhead rotates, the slag scraping device around the cutterhead drives the excavated soil to rotate to the upper position of the cutterhead. A slag hopper (i.e., slag collection device) is fixedly installed above the main conveyor belt. The soil rotates to the upper part and falls onto the slag collection device by gravity. The slag collection device has a sloping structure, and the soil falls into the main conveyor belt along the sloping structure.

[0004] The above structure can transport most of the excavated soil to the main excavator belt conveyor (i.e., excavated soil conveyor). However, due to the vibration of the main excavator and the belt conveyor, some of the excavated soil will fall to the bottom of the shield. Since there is a gap between the shield and the cutterhead, this part of the excavated soil will enter the bottom of the tunnel and form bottom slag. This bottom slag will interfere with the shield, thereby affecting the main excavator's advance and the efficiency of construction progress. Summary of the Invention

[0005] The purpose of this invention is to provide a tunneling machine host with a bottom-laying function to solve the problem that when the existing excavated soil falls onto the excavated soil conveyor through the excavated soil collection device, a portion of it falls to the bottom of the tunnel, forming bottom slag accumulation, which causes interference with the shield body, affects the propulsion of the host machine, and reduces the efficiency of construction progress; the purpose of this invention is also to provide a tunneling machine to solve the above problems.

[0006] To achieve the above objectives, the tunneling machine main unit with bottom-laying function in this invention adopts the following technical solution:

[0007] A tunnel boring machine main unit with a bottom-laying function includes a shield body. The bottom of the shield body is provided with a bottom structure that can form a soil-laying space between itself and the bottom of the tunnel. The bottom of the shield body is also provided with a leveling structure for leveling the soil that falls to the bottom of the tunnel by the soil collection device and / or the front end of the soil conveyor. A soil compaction device is provided inside the shield body behind the leveling structure.

[0008] The beneficial effects of the above technical solution are as follows: This invention improves the existing tunnel boring machine host, and the bottom structure of the shield body can form a space for slag laying between it and the bottom of the tunnel, leaving space for slag laying operations; the bottom of the shield body is also equipped with a leveling structure, which can level the slag that falls to the bottom of the tunnel by the slag collection device and / or the front end of the slag conveyor, facilitating subsequent compaction operations; a slag compaction device is set on the rear side of the leveling structure inside the shield body, which can compact and level the leveled slag, completing the slag laying at the bottom of the shield body, avoiding interference between the bottom slag and the shield body, affecting the host machine's propulsion and construction progress efficiency, and facilitating the entry and exit of subsequent trailers and personnel after the slag laying is completed, greatly saving time costs.

[0009] Furthermore, the slag compaction device includes a first vertical telescopic mechanism and a first compaction body connected below the first vertical telescopic mechanism.

[0010] The beneficial effect of the above technical solution is that the extension and retraction of the first vertical extension mechanism can drive the first ramming body to move up and down, which facilitates the compaction of the slag.

[0011] Furthermore, a transverse telescopic mechanism is provided at both the left and right ends of the first ramming body, and an end component is connected to the end of the transverse telescopic mechanism. The end component is used to extend or retract the first ramming body as the transverse telescopic mechanism extends or retracts. A second vertical telescopic mechanism is provided on the end component, and the end of the second vertical telescopic mechanism is connected to the second ramming body.

[0012] The beneficial effects of the above technical solution are as follows: the lateral telescopic mechanism can drive the end component to extend or retract the first tamping body. When it extends, the second vertical telescopic mechanism drives the second tamping body to move up and down, which can compact the slag on the left and right edges and widen the compaction range. When it retracts, it makes room on the left and right sides, which facilitates transportation and improves space utilization.

[0013] Furthermore, the first rammed body is a box-type structure, including a top plate, a bottom plate, and a vertical plate connected between the top plate and the bottom plate. A lateral telescopic mechanism is installed on the vertical plate, and there is a gap between the vertical plate and the left or right end of the top plate and the bottom plate, so that the second rammed body can retract into the first rammed body.

[0014] The advantages of the above technical solution are: the box structure is lightweight, easy to manufacture and move, and low in cost. At the same time, it facilitates the arrangement of the lateral telescopic mechanism and meets the requirement that the second rammed body can retract into the first rammed body.

[0015] Furthermore, the tunneling machine main unit with the bottom-laying function also includes an injection device for injecting hardening material into the surface of the compacted slag to form a hardened layer.

[0016] The beneficial effects of the above technical solution are as follows: by injecting hardening material into the surface of the compacted slag using an injection device to form a hardened layer, the hardness of the road is improved, facilitating traffic and personnel access.

[0017] Furthermore, the end component is a box structure with an opening at the lower end, so that the second rammed body can retract into the end component.

[0018] The advantages of the above technical solution are: the box structure is lightweight, easy to manufacture and move, and low in cost. At the same time, it is convenient for the second ramming body to retract into the end component, which not only forms protection, but also makes it convenient for the end component and the second ramming body to retract into the first ramming body together.

[0019] Furthermore, the first vertical telescopic mechanism is connected to the first rammed body ball joint.

[0020] The beneficial effect of the above technical solution is that if the bottom of the shield body is tilted at a certain angle to the horizon, it can be finely adjusted by the first upper and lower telescopic mechanism (the displacement difference between the telescopic sides) to adapt to the small tilt angle of the shield body.

[0021] Furthermore, the bottom surface of the first rammed object is a plane or a protrusion is provided on the bottom surface of the first rammed object.

[0022] The beneficial effects of the above technical solution are as follows: when the bottom surface is flat, the surface of the compacted slag is also flat; when there are protrusions on the bottom surface, the surface of the compacted slag has grooves, which can be used for water collection and drainage, meeting various needs.

[0023] Furthermore, the leveling structure is a vertically arranged scraper, which is used to be placed on the rear side below the overlapping area of ​​the slag conveyor and the slag collection device.

[0024] The advantages of the above technical solution are: using vertically set scraper blades as the leveling structure, the structure is simple and easy to use.

[0025] Furthermore, the bottom structure is a flat-bottomed structure, and the slag compaction device is located above the flat-bottomed structure when it is not in operation.

[0026] The beneficial effects of the above technical solution are: to avoid the soil compaction device protruding from the flat bottom structure and interfering with the bottom of the tunnel, while also ensuring that the flat bottom structure is not too high and affects the strength of the shield structure.

[0027] To achieve the above objectives, the tunneling machine in this invention adopts the following technical solution:

[0028] A tunnel boring machine includes a main unit and supporting equipment. The main unit includes a shield body. The bottom of the shield body is provided with a bottom structure that can form a space for laying excavated soil between the shield body and the bottom of the tunnel. The bottom of the shield body is also provided with a leveling structure for leveling the excavated soil that is dropped to the bottom of the tunnel by the excavated soil collection device and / or the front end of the excavated soil conveyor. An excavated soil compaction device is provided inside the shield body on the rear side of the leveling structure.

[0029] The beneficial effects of the above technical solution are as follows: This invention improves upon existing tunneling machines, enabling the bottom structure of the shield to form a space for slag laying between it and the tunnel bottom, thus providing space for slag laying operations. A leveling structure is also provided at the bottom of the shield, which can level the slag that falls to the tunnel bottom from the slag collection device and / or the front end of the slag conveyor, facilitating subsequent compaction operations. A slag compaction device is installed on the rear side of the leveling structure within the shield, which can compact and level the leveled slag, completing the slag laying at the bottom of the shield. This avoids interference between the accumulated slag at the bottom and the shield, affecting the main engine's propulsion and construction progress efficiency. Furthermore, after the slag laying is completed, it facilitates the entry and exit of subsequent trailers and personnel, significantly saving time and costs.

[0030] Furthermore, the slag compaction device includes a first vertical telescopic mechanism and a first compaction body connected below the first vertical telescopic mechanism.

[0031] The beneficial effect of the above technical solution is that the extension and retraction of the first vertical extension mechanism can drive the first ramming body to move up and down, which facilitates the compaction of the slag.

[0032] Furthermore, a transverse telescopic mechanism is provided at both the left and right ends of the first ramming body, and an end component is connected to the end of the transverse telescopic mechanism. The end component is used to extend or retract the first ramming body as the transverse telescopic mechanism extends or retracts. A second vertical telescopic mechanism is provided on the end component, and the end of the second vertical telescopic mechanism is connected to the second ramming body.

[0033] The beneficial effects of the above technical solution are as follows: the lateral telescopic mechanism can drive the end component to extend or retract the first tamping body. When it extends, the second vertical telescopic mechanism drives the second tamping body to move up and down, which can compact the slag on the left and right edges and widen the compaction range. When it retracts, it makes room on the left and right sides, which facilitates transportation and improves space utilization.

[0034] Furthermore, the first rammed body is a box-type structure, including a top plate, a bottom plate, and a vertical plate connected between the top plate and the bottom plate. A lateral telescopic mechanism is installed on the vertical plate, and there is a gap between the vertical plate and the left or right end of the top plate and the bottom plate, so that the second rammed body can retract into the first rammed body.

[0035] The advantages of the above technical solution are: the box structure is lightweight, easy to manufacture and move, and low in cost. At the same time, it facilitates the arrangement of the lateral telescopic mechanism and meets the requirement that the second rammed body can retract into the first rammed body.

[0036] Furthermore, the tunneling machine main unit with the bottom-laying function also includes an injection device for injecting hardening material into the surface of the compacted slag to form a hardened layer.

[0037] The beneficial effects of the above technical solution are as follows: by injecting hardening material into the surface of the compacted slag using an injection device to form a hardened layer, the hardness of the road is improved, facilitating traffic and personnel access.

[0038] Furthermore, the end component is a box structure with an opening at the lower end, so that the second rammed body can retract into the end component.

[0039] The advantages of the above technical solution are: the box structure is lightweight, easy to manufacture and move, and low in cost. At the same time, it is convenient for the second ramming body to retract into the end component, which not only forms protection, but also makes it convenient for the end component and the second ramming body to retract into the first ramming body together.

[0040] Furthermore, the first vertical telescopic mechanism is connected to the first rammed body ball joint.

[0041] The beneficial effect of the above technical solution is that if the bottom of the shield body is tilted at a certain angle to the horizon, it can be finely adjusted by the first upper and lower telescopic mechanism (the displacement difference between the telescopic sides) to adapt to the small tilt angle of the shield body.

[0042] Furthermore, the bottom surface of the first rammed object is a plane or a protrusion is provided on the bottom surface of the first rammed object.

[0043] The beneficial effects of the above technical solution are as follows: when the bottom surface is flat, the surface of the compacted slag is also flat; when there are protrusions on the bottom surface, the surface of the compacted slag has grooves, which can be used for water collection and drainage, meeting various needs.

[0044] Furthermore, the leveling structure is a vertically arranged scraper, which is used to be placed on the rear side below the overlapping area of ​​the slag conveyor and the slag collection device.

[0045] The advantages of the above technical solution are: using vertically set scraper blades as the leveling structure, the structure is simple and easy to use.

[0046] Furthermore, the bottom structure is a flat-bottomed structure, and the slag compaction device is located above the flat-bottomed structure when it is not in operation.

[0047] The beneficial effects of the above technical solution are: to avoid the soil compaction device protruding from the flat bottom structure and interfering with the bottom of the tunnel, while also ensuring that the flat bottom structure is not too high and affects the strength of the shield structure. Attached Figure Description

[0048] Figure 1 This is a partial structural diagram of Embodiment 1 of the tunneling machine of the present invention;

[0049] Figure 2 for Figure 1 Side view of the location of the slag compaction device;

[0050] Figure 3 for Figure 1 Partial structural diagram of the front end of a tunnel boring machine;

[0051] Figure 4 This is a side sectional view of the location of the soil compaction device in Embodiment 1 of the tunneling machine of the present invention (the compaction block is in the extended state);

[0052] Figure 5 This is a side sectional view of the location of the slag compaction device in Embodiment 1 of the tunneling machine of the present invention (the compaction block is in the retracted state);

[0053] Figure 6 This is a side sectional view of the location of the slag compaction device in Embodiment 2 of the tunneling machine of the present invention (the compaction block is in the extended state);

[0054] Figure 7 This is a side sectional view of the location of the soil compaction device in Embodiment 3 of the tunneling machine of the present invention (the compaction block is in the extended state).

[0055] In the diagram: 1. Cutterhead; 2. Slag collection device; 3. Shield body; 301. Flat bottom structure; 302. Slag bed space; 303. Scraper blade; 4. Injection device; 5. Rear-mounted belt conveyor; 6. Tunnel; 7. Main beam; 8. Slag compaction device; 801. Fixing plate; 802. First vertical telescopic mechanism; 803. First compaction body; 8031. Top plate; 8032. Bottom plate; 8033. Vertical plate; 8034. Square protrusion; 8035. Arc-shaped protrusion; 804. Lateral telescopic mechanism; 805. End box; 806. Second vertical telescopic mechanism; 807. Second compaction body; 9. Slag; 10. Main belt conveyor. Detailed Implementation

[0056] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0057] Embodiment 1 of the tunneling machine in this invention:

[0058] This embodiment provides a tunnel boring machine with a bottom-laying function. The bottom of the shield body of the tunnel boring machine is set as a flat bottom structure and equipped with a scraper. The scraper can scrape the soil that falls to the bottom of the tunnel and flatten it. A soil compaction device is set on the rear side of the scraper to compact and flatten the soil, thus laying the soil at the bottom of the shield body. This avoids the bottom slag from interfering with the shield body and affecting the propulsion of the main machine and the efficiency of the construction progress. After the bottom is laid, it can facilitate the entry and exit of subsequent trailers and personnel.

[0059] Specifically, such as Figure 1 and Figure 2 As shown, the tunneling machine includes a main unit and supporting equipment. The supporting equipment includes a rear trailer and a rear conveyor belt 5 mounted on the rear trailer. The main unit includes a cutterhead 1, a slag collection device 2, a shield 3, an injection device 4, a main beam 7, a slag compaction device 8, and a slag conveyor. The cutterhead 1 is used for excavation. The slag collection device 2 is located inside the shield 3 and above the front end of the slag conveyor belt (in this embodiment, the main unit conveyor belt 10). The main unit conveyor belt 10 and the rear conveyor belt 5 constitute the slag discharge system, realizing the transportation of slag.

[0060] During excavation, as the cutterhead 1 rotates, the scraping device around it rotates the excavated soil to the upper part of the cutterhead 1. The soil then falls onto the slag collection device 2 by gravity. The slag collection device 2 has a sloping structure, and most of the soil falls along this slope into the main conveyor belt 10. However, due to the vibrations from both the main excavation and the conveyor belt, some soil 9 falls to the bottom of the shield 3. Because there is a gap between the shield 3 and the cutterhead 1, this soil 9 enters the bottom of the tunnel 6, forming bottom slag. This bottom slag interferes with the shield 3, affecting the main excavator's movement and the overall construction progress efficiency.

[0061] To solve the above problems, such as Figure 3 As shown, the present invention sets the bottom of the shield body 3 as a flat-bottom structure 301 (i.e., bottom structure). The flat-bottom structure means that the bottom surface of the shield body is horizontal. Relative to the circular cutterhead 1, the flat-bottom structure 301 can form a slag-laying space 302 between itself and the bottom of the tunnel 6. The bottom of the shield body 3 is also provided with a leveling structure for leveling the slag that falls from the slag collection device 2 and the front end of the main conveyor belt 10 to the bottom of the tunnel. In this embodiment, the leveling structure is located at the front end of the flat-bottom structure 301 and is a vertically arranged scraper 303. The scraper 303 is located below and behind the overlapping area of ​​the main conveyor belt 10 and the slag collection device 2. In this way, the slag 9 that falls from the front end of the slag collection device 2 and the main conveyor belt 10 to the bottom of the tunnel 6 will be scraped flat by the scraper 303 as the main machine advances forward.

[0062] like Figure 1 , Figure 2 and Figure 3As shown, a soil compaction device 8 is installed inside the shield body 3 behind the scraper plate 303. When not in operation, the soil compaction device 8 is located above the flat bottom structure 301, that is, it does not protrude from the flat bottom structure 301. Combined with... Figure 3 , Figure 4 and Figure 5 As shown, the slag compaction device 8 includes a first vertical telescopic mechanism 802 and a first compaction body 803 connected below the first vertical telescopic mechanism 802. The first vertical telescopic mechanism 802 can drive the first compaction body 803 to move up and down, compacting and leveling the slag 9 after it has been scraped in the slag paving space 302. This completes the paving of the slag 9 at the bottom of the shield body 3 while tunneling, avoiding interference between the bottom slag and the shield body, affecting the main engine's propulsion and construction progress efficiency, reducing the need for manual bottom cleaning, and facilitating the entry and exit of subsequent trailers and personnel after the paving is completed, thus saving a significant amount of time.

[0063] The first ramming body 803 is a cuboid structure. Two first vertical telescopic mechanisms 802 are arranged along the length of the first ramming body 803, and two more are arranged along the width of the first ramming body 803, that is, there are a total of four first vertical telescopic mechanisms 802. The two on the left and the two on the right form a group. The two groups of first vertical telescopic mechanisms 802 are arranged symmetrically with respect to the center of the first ramming body 803, which can provide sufficient power to facilitate the vertical movement of the first ramming body 803, while ensuring the effect of compaction and leveling.

[0064] The slag compaction device 8 also includes a fixed plate 801 fixedly installed inside the shield body 3. The upper ends of each of the first vertical telescopic mechanisms 802 are bolted to the fixed plate 801. The structure is simple, facilitating the installation and subsequent disassembly of multiple first vertical telescopic mechanisms 802, and also facilitating unified control of the actions of each first vertical telescopic mechanism 802. At the same time, the lower ends of each first vertical telescopic mechanism 802 are ball-jointed to the first compaction body 803. If a small tilt angle occurs between the bottom of the shield body and the ground, it can be finely adjusted through the first vertical telescopic mechanism 802 (the displacement difference between the two sides of the telescopic mechanism) to adapt to the small tilt angle of the shield body.

[0065] Furthermore, such as Figure 4 and Figure 5As shown, the first ramming body 803 in this embodiment is a box-type structure welded together, including a top plate 8031, a bottom plate 8032, and a vertical plate 8033 connected between the top plate 8031 ​​and the bottom plate 8032. The box-type structure is lightweight, easy to manufacture and move, and has low cost. A transverse telescopic mechanism 804 is provided at both the left and right ends of the first ramming body 803. The transverse telescopic mechanism 804 is mounted on the vertical plate 8033, and an end component is connected to the end of the transverse telescopic mechanism 804. In this embodiment, the end component is an end box 805. The end box 805 is used to extend or retract the first ramming body 803 as the transverse telescopic mechanism 804 extends or retracts. A second vertical telescopic mechanism 806 is mounted on the end box 805, and a second ramming body 807 is connected to the end of the second vertical telescopic mechanism 806. The second ramming body 807 is block-shaped. When in use, the horizontal telescopic mechanism 804 can drive the end box 805 to extend or retract the first tamping body 803. When extended, the second vertical telescopic mechanism 806 drives the second tamping body 807 to move up and down, which can compact the slag on the left and right edges and widen the compaction range. When retracted, it makes room on the left and right sides, which is convenient for transportation and improves space utilization.

[0066] like Figure 4 and Figure 5 As shown, there is a gap between the left vertical plate 8033 and the left end of the top plate 8031 ​​and the bottom plate 8032, and a gap between the right vertical plate 8033 and the right end of the top plate 8031 ​​and the bottom plate 8032, ensuring that the end box 805 can retract into the first ramming body 803. Simultaneously, since the end box 805 is a box structure with an open bottom, it ensures that the second ramming body 807 can retract into the end box 805, further guaranteeing that the second ramming body 807 and the end box 805 can retract together into the first ramming body 803, while also providing protection for the second ramming body 807.

[0067] like Figure 4 and Figure 5 As shown, in this embodiment, the bottom surface of the first rammed body 803 is a plane, that is, the bottom surface of the base plate 8032 is a plane, so that the surface of the compacted slag is also a plane. In addition, in this embodiment, the first vertical telescopic mechanism 802, the second vertical telescopic mechanism 806, and the lateral telescopic mechanism 804 are all telescopic cylinders. Using cylinders as telescopic mechanisms facilitates connection with the hydraulic system of the tunneling machine itself, thereby facilitating the control of the telescopic mechanism's movement.

[0068] In addition, such as Figure 1As shown, the main unit also includes an injection device 4 fixed to the main beam 7. The injection device 4 is located behind the slag compaction device 8, and its lower part is equipped with a relatively long injection pipeline. It can inject a hardening material into the surface of the compacted slag to form a hardened layer. The hardening material is preferably concrete to improve the hardness of the road and facilitate vehicle and personnel access. Furthermore, the length of the injection pipeline is sufficient, and the position of the pipeline outlet can be placed arbitrarily within the allowable length range to cover the required injection width.

[0069] In summary, this invention solves the problem of slag and soil falling from the slag collection device and the main conveyor belt to the bottom of the shield body, which hinders the smooth advancement of the shield body. By compacting the fallen slag and soil into a road, not only is the problem of slag and soil blockage solved, but it also facilitates the access of subsequent trailers and personnel. According to the site conditions, the actual amount of fallen slag and soil is quite large, enough to pave a road of a certain thickness. At the same time, by designing a reasonable height for the flat bottom structure 301, that is, designing a reasonable height for the scraper 303, it can be ensured that there is always excess slag and soil being pushed forward and leveled, thereby ensuring a uniform road thickness.

[0070] Embodiment 2 of the tunneling machine in this invention: as follows Figure 6 As shown, unlike Embodiment 1, the bottom surface of the first rammed body 803 is provided with a protrusion, which is a square protrusion 8034. By changing the bottom shape of the first rammed body 803, the shape of the rammed slag can be changed to meet special needs. For example, during the tunneling process, when encountering water-rich strata, a U-shaped groove can be opened in the middle of the rammed slag to collect water for drainage pumps. At this time, a U-shaped groove can be rammed out by the square protrusion 8034.

[0071] Embodiment 3 of the tunneling machine in this invention: as follows Figure 7 As shown, unlike Embodiment 2, the protrusion on the bottom surface of the first rammed body 803 is an arc-shaped protrusion 8035, which can form an arc-shaped groove in the middle of the rammed slag to collect water so that the drainage pump can drain the water.

[0072] In other embodiments of the tunneling machine: the shape of the protrusion on the bottom surface of the first ramming body is not limited to the above embodiments. For example, it can also be V-shaped or other shapes, which can be designed according to actual needs.

[0073] In other embodiments of the tunneling machine: This embodiment provides other shapes for the bottom structure of the shield body. Unlike embodiment 1, the bottom structure is not flat, such as an arc-shaped bottom. As long as the arc-shaped bottom is high enough, it will not affect the compaction of the excavated soil.

[0074] In other embodiments of the tunneling machine: This embodiment provides other arrangements of the soil compaction device, which differ from Embodiment 1, for example, the soil compaction device may protrude slightly from the bottom structure when it is not in operation.

[0075] In other embodiments of the tunneling machine: This embodiment provides other forms of leveling structure, which, unlike Embodiment 1, are push plates that can move horizontally.

[0076] In other embodiments of the tunneling machine: This embodiment provides a different connection method between the first vertical telescopic mechanism and the first ramming body. Unlike embodiment 1, the connection between the first vertical telescopic mechanism and the first ramming body is a normal hinge determined by the hinge axis.

[0077] In other embodiments of the tunneling machine: This embodiment provides different structural forms of the end component. Unlike Embodiment 1, the end component is a frame structure, and the second ramming entity can also retract into the end component. Of course, in other embodiments, the end component can also be a plate structure, and the second ramming entity does not need to retract into the end component.

[0078] In other embodiments of the tunneling machine: This embodiment provides different structural forms of the first ramming body. Unlike Embodiment 1, the first ramming body is a frame structure, and the end components and the second ramming body can also retract into the first ramming body. Of course, in other embodiments, the first ramming body can also be an integral block structure, except that grooves are machined at both ends to allow the end components and the second ramming body to retract into the first ramming body.

[0079] In other embodiments of the tunneling machine: This embodiment provides different structural components of the slag compaction device. Unlike embodiment 1, the left and right ends of the first compaction body are not provided with a lateral telescopic mechanism, and of course, the end parts, the second upper and lower telescopic mechanism and the second compaction body are not provided.

[0080] In other embodiments of the tunneling machine: This embodiment provides different forms of the slag compaction device. Unlike embodiment 1, the slag compaction device is a swing lever type compaction device, which does not include the first vertical telescopic mechanism.

[0081] In other embodiments of the tunneling machine: the first vertical telescopic mechanism, the second vertical telescopic mechanism, and the lateral telescopic mechanism are all cylinders.

[0082] In other embodiments of the tunneling machine: when the road formed after the excavated soil is compacted can meet the needs of traffic and personnel access, the injection device may not be installed, that is, hardening material is not injected into the surface of the compacted excavated soil.

[0083] The embodiment of the tunneling machine host with bottom-laying function in this invention is as follows: The specific structure of the tunneling machine host with bottom-laying function is the same as that of the host in any of the above-mentioned tunneling machine embodiments, and will not be repeated here.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A tunneling machine main unit with a bottom-laying function, comprising a shield body (3), characterized in that, The bottom of the shield (3) is a flat-bottom structure for forming a slag paving space (302) between the shield (6) and the bottom of the tunnel (6). The bottom of the shield (3) is also equipped with a scraper for scraping the slag (9) that falls from the slag collection device and the front end of the slag conveyor and enters the bottom of the tunnel (6) through the gap between the shield and the cutterhead as the tunneling machine moves forward. The scraper is vertically set and located below the rear side of the overlapping area between the slag conveyor and the slag collection device, at the front end of the flat-bottom structure. The bottom of the space in front of the scraper is open. A slag compaction device (8) is set inside the shield (3) behind the scraper. The slag compaction device does not protrude from the flat-bottom structure when it is not working. The slag compaction device includes a first upper and lower telescopic mechanism and a first compaction body connected by a ball joint below the first upper and lower telescopic mechanism. The tunneling machine with paving function also includes a main beam and an injection device fixed on the main beam. The injection device is located behind the slag compaction device and is used to inject hardening material on the surface of the compacted slag to form a hardened layer.

2. The tunneling machine main unit with bottom-laying function according to claim 1, characterized in that, The hardened layer is concrete.

3. The tunneling machine main unit with bottom-laying function according to claim 1, characterized in that, The first rammed body (803) is provided with a transverse telescopic mechanism (804) at its left and right ends respectively. The end of the transverse telescopic mechanism (804) is connected to an end component, which is used to extend or retract the first rammed body (803) as the transverse telescopic mechanism (804) extends or retracts. The end component is provided with a second vertical telescopic mechanism (806), and the end of the second vertical telescopic mechanism (806) is connected to a second rammed body (807).

4. The tunneling machine main unit with bottom-laying function according to claim 3, characterized in that, The first rammed body (803) is a box-type structure, including a top plate (8031), a bottom plate (8032), and a vertical plate (8033) connecting the top plate (8031) and the bottom plate (8032). A transverse telescopic mechanism (804) is installed on the vertical plate (8033). The vertical plate (8033) has a gap from the left or right end of the top plate (8031) and the bottom plate (8032) so that the second rammed body (807) can retract into the first rammed body (803).

5. The tunneling machine main unit with bottom-laying function according to any one of claims 1 to 4, characterized in that, The first vertical telescopic mechanism is a hydraulic cylinder.

6. The tunneling machine main unit with bottom-laying function according to claim 3 or 4, characterized in that, The end component is a box structure with an opening at the bottom so that the second rammed body (807) can retract into the end component.

7. The tunneling machine main unit with bottom-laying function according to claim 3 or 4, characterized in that, Both the lateral telescopic mechanism and the second vertical telescopic mechanism are hydraulic cylinders.

8. The tunneling machine main unit with bottom-laying function according to any one of claims 1 to 4, characterized in that, The bottom surface of the first rammed solid (803) is a plane.

9. The tunneling machine main unit with bottom-laying function according to any one of claims 1 to 4, characterized in that, The slag compaction device also includes a fixed plate fixedly installed inside the shield body, and the upper ends of each of the first upper and lower telescopic mechanisms are all bolted to the fixed plate.

10. The tunneling machine main unit with bottom-laying function according to any one of claims 1 to 4, characterized in that, The bottom surface of the first rammed body (803) is provided with protrusions to form a water tank for collecting water so that the drainage pump can drain it.

11. A tunneling machine, comprising a main unit and supporting equipment, the main unit including a shield body (3), characterized in that, The bottom of the shield (3) is a flat-bottom structure for forming a slag paving space (302) between the shield (6) and the bottom of the tunnel (6). The bottom of the shield (3) is also equipped with a scraper for scraping the slag (9) that falls from the slag collection device and the front end of the slag conveyor and enters the bottom of the tunnel (6) through the gap between the shield and the cutterhead as the main machine advances forward. The scraper is vertically set and located below the rear side of the overlapping area between the slag conveyor and the slag collection device, at the front end of the flat-bottom structure. The bottom of the space in front of the scraper is open. A slag compaction device (8) is set inside the shield (3) behind the scraper. The slag compaction device does not protrude from the flat-bottom structure when it is not working. The slag compaction device includes a first upper and lower telescopic mechanism and a first compaction body connected by a ball joint below the first upper and lower telescopic mechanism. The tunneling machine main machine with paving function also includes a main beam and an injection device fixed on the main beam. The injection device is located behind the slag compaction device and is used to inject hardening material on the surface of the compacted slag to form a hardened layer.

12. The tunneling machine according to claim 11, characterized in that, The hardened layer is concrete.

13. The tunneling machine according to claim 11, characterized in that, The first rammed body (803) is provided with a transverse telescopic mechanism (804) at its left and right ends respectively. The end of the transverse telescopic mechanism (804) is connected to an end component, which is used to extend or retract the first rammed body (803) as the transverse telescopic mechanism (804) extends or retracts. The end component is provided with a second vertical telescopic mechanism (806), and the end of the second vertical telescopic mechanism (806) is connected to a second rammed body (807).

14. The tunneling machine according to claim 13, characterized in that, The first rammed body (803) is a box-type structure, including a top plate (8031), a bottom plate (8032), and a vertical plate (8033) connecting the top plate (8031) and the bottom plate (8032). A transverse telescopic mechanism (804) is installed on the vertical plate (8033). The vertical plate (8033) has a gap from the left or right end of the top plate (8031) and the bottom plate (8032) so that the second rammed body (807) can retract into the first rammed body (803).

15. The tunneling machine according to any one of claims 11 to 14, characterized in that, The first vertical telescopic mechanism is a hydraulic cylinder.

16. The tunneling machine according to claim 13 or 14, characterized in that, The end component is a box structure with an opening at the bottom so that the second rammed body (807) can retract into the end component.

17. The tunneling machine according to claim 13 or 14, characterized in that, Both the lateral telescopic mechanism and the second vertical telescopic mechanism are hydraulic cylinders.

18. The tunneling machine according to any one of claims 11 to 14, characterized in that, The bottom surface of the first rammed solid (803) is a plane.

19. The tunneling machine according to any one of claims 11 to 14, characterized in that, The slag compaction device also includes a fixed plate fixedly installed inside the shield body, and the upper ends of each of the first upper and lower telescopic mechanisms are all bolted to the fixed plate.

20. The tunneling machine according to any one of claims 11 to 14, characterized in that, The bottom surface of the first rammed body (803) is provided with protrusions to form a water tank for collecting water so that the drainage pump can drain it.

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