CN216305928U - Tunnel boring machine - Google Patents
Tunnel boring machine Download PDFInfo
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- CN216305928U CN216305928U CN202122731640.8U CN202122731640U CN216305928U CN 216305928 U CN216305928 U CN 216305928U CN 202122731640 U CN202122731640 U CN 202122731640U CN 216305928 U CN216305928 U CN 216305928U
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Abstract
The utility model relates to a tunneling machine which comprises a cutter head, a stone slag bin, a spiral conveyor, a crushing device, a screening device, a bean gravel pumping device and a residue conveying device, wherein the cutter head is used for cutting hard rock, the stone slag bin is arranged on the rear side of the cutter head, the front end of the spiral conveyor extends into the stone slag bin to convey stone slag from front to back, the crushing device is used for crushing stone slag conveyed by the spiral conveyor, the screening device is used for screening the stone slag crushed by the crushing device, the bean gravel pumping device is used for conveying the bean gravel flowing out of a first discharge port of the screening device to a backfill region between a duct piece and a rock stratum, and the residue conveying device is used for conveying residues flowing out of a second discharge port back. The bean gravel required by the backfill operation of the tunnel boring machine does not need to be transported from the outside of the tunnel, and the backfill efficiency is improved. In addition, the bean gravel required by the backfilling operation is formed by crushing stone slag generated in the tunneling process, so that the backfilling cost is reduced.
Description
Technical Field
The utility model relates to a tunnel boring machine, and belongs to the field of tunnel boring machines.
Background
The tunnel boring machine is used as advanced tunnel construction equipment and widely applied to construction of urban subway tunnels. The existing tunnel boring machine generally comprises a cutter head and a ballast bin which is positioned at the rear side of the cutter head, wherein ballast cut by the cutter head flows into the ballast bin, the tunnel boring machine further comprises a spiral conveyor, the front end of the spiral conveyor extends into the ballast bin and conveys the ballast flowing into the ballast bin to a conveying mechanism of the next stage, and the ballast is finally conveyed out of a tunnel. The tunnel boring machine needs to fill behind the duct piece to ensure the stability of the duct piece in the process of boring, the currently general duct piece back filling comprises three construction processes of synchronous grouting, secondary grouting and pea gravel backfill grouting, a combined construction process of synchronous grouting and secondary grouting is generally adopted in a soft soil stratum and a composite stratum, the construction process of pea gravel backfill grouting is adopted in a full-fracture hard rock stratum, the filling material pea gravel in the construction process of pea gravel backfill grouting can be divided into machine-made pea gravel and natural pea gravel, the natural pea gravel is round and moist granules of 5mm-10mm screened from river sand, the machine-made pea gravel is irregular granules of 5mm-10mm formed by crushing large rock blocks, the two kinds of pea gravel can meet the use requirements, but both the natural pea gravel and the machine-made pea gravel need to be prepared outside the tunnel, and then the pea gravel meeting the size requirements is conveyed to a backfill region between the duct piece and the rock stratum from the outside of the tunnel to be returned to the rock stratum Filling, the flow is complicated, the backfilling efficiency is low, the needed bean gravel is obtained by screening in river sand or by crushing large rock blocks, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a tunnel boring machine, which is used for solving the problems of low backfill efficiency and higher backfill cost in the tunneling process of the existing tunnel boring machine.
The technical scheme of the tunnel boring machine is as follows:
the tunneling machine comprises a cutter head for cutting hard rock, a ballast bin positioned at the rear side of the cutter head and a spiral conveyor; the front end of the spiral conveyor extends into the ballast bin, and the ballast cut by the cutter head is conveyed from front to back; the tunnel boring machine also comprises a crushing device, a screening device, a gravel and bean pumping device and a residue conveying device, wherein the crushing device is arranged at the downstream of the screw conveyor and is used for crushing the stone slag conveyed by the screw conveyor; the screening device is used for screening the stone slag crushed by the crushing device, is provided with a first discharge port and a second discharge port, and is used for enabling the bean gravel meeting the size requirement to flow out through the first discharge port and enabling the residues to flow out through the second discharge port; the pea gravel pumping device is used for conveying the pea gravel flowing out of the first discharge port of the screening device to a backfill region between the pipe piece and the rock stratum; and the residue conveying device is positioned at the downstream of the screening device and is used for conveying the residues flowing out of the second discharge hole backwards.
Has the advantages that: according to the tunnel boring machine, the stone ballast cut by the cutter head is crushed by the crushing device, the bean gravel pumping device conveys the bean gravel which flows out of the screening device and meets the size requirement to the backfill region between the duct piece and the rock stratum for backfill operation, the tunnel boring machine can realize synchronous tunneling operation and backfill operation, the bean gravel required by the backfill operation does not need to be conveyed from the outside of the tunnel, the flow is simplified, and the backfill efficiency is improved. In addition, the bean gravel required by the backfilling operation is formed by crushing stone slag generated in the tunneling process, so that the backfilling cost is reduced.
Further, the residue conveying device comprises a residue conveying belt conveyor and a residue transport vehicle, and the residue transport vehicle is located at the downstream of the residue conveying belt conveyor.
Has the advantages that: the residue conveying device adopting the layout mode enables the crushing device, the screening device and the gravel and bean pumping device to be closer to a backfill area, so that the gravel and bean pipeline of the gravel and bean pumping device for conveying gravel and bean does not need to be too long to be arranged, and the arrangement is more convenient.
And further, a ballast conveying belt conveyor is arranged between the screw conveyor and the crushing device and conveys the ballast sent out by the screw conveyor backwards into the crushing device.
Has the advantages that: the residue conveying device can be simplified by adopting the layout mode.
Further, the residue conveying device comprises a residue transport vehicle.
Has the advantages that: the residue transport vehicle has simple structure and convenient use.
Further, the slag outlet of the screw conveyer is connected with the feed inlet of the crushing device.
Has the advantages that: the ballast flowing out of the screw conveyor flows more easily into the crushing device.
Further, the screw conveyor and the crushing device are arranged up and down.
Has the advantages that: by adopting the layout mode, the connection structure between the screw conveyor and the crushing device is simpler, and the whole structure is more compact.
Further, the first discharge port of the screening device is located on the front side of the screening device, and the second discharge port is located on the rear side of the screening device.
Has the advantages that: the screening device adopts the structural layout, so that the pea gravel pumping device and the residue conveying device are arranged along the extending direction of the tunnel, and the layout is more reasonable.
Further, the crushing device is a hobbing crusher.
Has the advantages that: the hobbing crusher has simple structure and convenient use.
Furthermore, a slag outlet door for controlling the opening and the closing of the slag outlet is arranged at the slag outlet of the spiral conveyor.
Has the advantages that: the slag outlet is convenient to close when necessary due to the arrangement of the slag outlet door, and the control is more flexible.
Further, the crushing device and the screening device are arranged up and down.
Has the advantages that: by adopting the layout mode, the crushing device and the screening device are more compact.
Drawings
Fig. 1 is a schematic structural view of a tunnel boring machine according to embodiment 1 of the present invention;
FIG. 2 is a partial cross-sectional view taken at A-A of FIG. 1;
fig. 3 is a schematic structural view of a tunnel boring machine according to embodiment 2 of the present invention.
In the figure: 1. a screw conveyor; 101. a slag outlet; 102. a slag outlet door; 2. a crushing device; 3. a screening device; 4. a gravel-bean pumping device; 401. a gravel pump; 402. a gravel pipe line; 5. a residue conveying device; 501. a residue belt conveyor; 502. a residue transport vehicle; 6. a duct piece; 7. a rock formation; 8. backfilling the area; 9. a ballast bin; 10. screening the box; 111. screening a screen; 11. a cutter head; 12. stone sediment belt conveyor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The specific embodiment 1 of the tunnel boring machine of the present invention:
as shown in fig. 1 and 2, the tunnel boring machine includes a cutter head 11, a ballast bin 9, a screw conveyor 1, a crushing device 2, a screening device 3, a gravel-bean pumping device 4, and a residue conveying device 5. The cutter head 11 is used for cutting hard rock, the ballast bin 9 is arranged at the rear side of the cutter head 11, the ballast cut by the cutter head 11 falls into the ballast bin 9, the front end of the screw conveyor 1 extends into the ballast bin 9, and the ballast in the ballast bin 9 is conveyed from front to back. The crusher 2 is located downstream of the screw conveyor 1, and the crusher 2 crushes the ballast conveyed by the screw conveyor 1. Screening plant 3 is located breaker 2's low reaches, sieves the stone ballast after 2 broken handle of breaker, and screening plant 3 has first discharge gate and second discharge gate, and the beans gravel that accords with size requirement flows through first discharge gate, and the residue that is sieved out flows through the second discharge gate. The pea gravel pumping device 4 conveys pea gravel flowing out of a first discharge port of the screening device 3 to a backfill region 8 between the pipe piece 6 and the rock stratum 7, and the residue conveying device 5 is positioned at the downstream of the screening device 3 and conveys residues flowing out of a second discharge port of the screening device 3 backwards.
In this embodiment, the screw conveyor 1 has a slag hole 101 with a downward opening, the crushing device 2 is disposed below the slag hole 101, and the feed inlet of the crushing device 2 receives the stone slag discharged from the slag hole 101. In particular, the slag outlet 101 of the screw conveyor 1 is connected with the feed inlet of the crushing device 2, and the adoption of the structure makes the stone slag flowing out of the screw conveyor 1 easier to flow into the crushing device 2. In this embodiment the crushing device 2 is a hobbing crusher, in other embodiments the crushing device may also be a jaw crusher. In particular, a slag outlet 102 is arranged at the slag outlet 101 of the screw conveyor 1, and the slag outlet 102 can be closed when necessary, so that the control is more flexible.
As shown in fig. 1, the screening device 3 is arranged at the lower side of the crushing device 2, in this embodiment, the screening device 3 is a screening box 10, the screening box 10 has a feeding port, a first discharging port and a second discharging port, and a screen 111 is arranged inside the screening box 10, and the first discharging port and the second discharging port are arranged at both sides of the screen 111. The feed inlet is used for accepting the stone ballast that the broken processing that breaker 2 sent out, and the screen cloth 111 will fall into the stone ballast of screening case 10 and screen, and the bean gravel that accords with the size requirement that obtains through the screening of screen cloth 111 gets into the bean gravel pumping device 4 that is located screening case 10 front side through first discharge gate, and the residue that obtains through the screening of screen cloth 111 is carried to residue conveyor 5 through the second discharge gate.
In the present embodiment, the gravel pack pumping device 4 includes a gravel pack pump 401 and a gravel pack pipe 402 connected to the gravel pack pump 401, and the gravel pack pump 401 conveys the gravel packs sent out from the first discharge port to the backfill region 8 between the pipe piece 6 and the rock formation 7 through the gravel pack pipe 402 for backfill treatment.
In the present embodiment, the residue conveying device 5 includes a residue belt conveyor 501 and a residue transport vehicle 502, the residue transport vehicle 502 is located downstream of the residue belt conveyor 501, and the residue belt conveyor 501 conveys the residue sent out from the second discharge port of the sifting box 10 back into the residue transport vehicle 502 and conveys the residue out of the tunnel by the residue transport vehicle 502.
The working principle of the tunnel boring machine is as follows:
during operation, the spiral conveyer 1 conveys the ballast cut by the cutter head 11 to the crushing device 2 from front to back, the crushing device 2 crushes the ballast conveyed by the spiral conveyer 1, the screening device 3 positioned on the lower side of the crushing device 2 screens the crushed ballast, the bean gravel meeting the size requirement is conveyed to the bean gravel pumping device 4 positioned on the front side of the screening device 3 through the first discharge port of the screening device 3, the residue is conveyed to the residue conveying belt conveyer 501 positioned on the rear side of the screening device 3 through the second discharge port of the screening device 3, the bean gravel pumping device 4 conveys the bean gravel to the backfill region 8 between the duct piece 6 and the rock stratum 7 through the bean gravel pipeline 402, the residue is backfilled, and the residue is conveyed to the residue transport vehicle 502 through the residue conveying belt conveyer 501 and then conveyed to the outside of the tunnel through the residue transport vehicle 502.
In the embodiment 2 of the tunnel boring machine of the present invention, as shown in fig. 3, unlike the embodiment 1 described above, a ballast conveyor 12 is provided between the screw conveyor 1 and the crushing device 2, the ballast conveyor 12 conveys ballast delivered from the screw conveyor 1 backward into the crushing device 2, in this embodiment, the slag conveyor 5 is a slag transport vehicle 502, and the slag flowing out of the second discharge port of the sieving device 3 is transported out of the tunnel by the slag transport vehicle 502.
The embodiment 3 of the tunnel boring machine of the present invention is different from the embodiment 2 described above in that a belt conveyor is provided between the sieving device and the residue transport vehicle, and the residue flowing out of the second discharge port of the sieving device is transported to the residue transport vehicle by the belt conveyor and then transported to the outside of the tunnel by the residue transport vehicle.
The embodiment 4 of the tunnel boring machine of the present invention differs from the embodiment 1 described above in that the residue transport means is a residue transport vehicle.
The embodiment 5 of the tunnel boring machine of the present invention differs from the embodiment 1 described above in that the slag outlet of the screw conveyor is spaced vertically opposite the feed inlet of the crushing device.
The embodiment 6 of the tunnel boring machine of the present invention differs from the embodiment 1 described above in that the crushing device is located at the rear side of the screw conveyor, and the slag outlet of the screw conveyor is connected to the feed inlet of the crushing device by a pipe.
The tunnel boring machine of this embodiment 7 of the utility model differs from embodiment 1 described above in that the crushing means is a jaw crusher.
The embodiment 8 of the tunnel boring machine of the present invention differs from the embodiment 1 described above in that the first and second discharge openings of the screening device are both located on the front side of the screening device, or in other embodiments the first and second discharge openings of the screening device may both be located on the rear side of the screening device.
The embodiment 9 of the tunnel boring machine of the present invention differs from the embodiment 1 described above in that no slag outlet door is provided at the slag outlet of the screw conveyor, and the ballast flowing out of the slag outlet of the screw conveyor flows directly into the crushing device.
The embodiment 10 of the tunnel boring machine of the present invention differs from the embodiment 1 described above in that the screening device is located on the rear side of the crushing device.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A tunnel boring machine comprises a cutter head (11) for cutting hard rock, a slag bin (9) positioned at the rear side of the cutter head (11) and a spiral conveyor (1); the front end of the spiral conveyor (1) extends into the ballast bin (9) and conveys the ballast cut by the cutter head (11) from front to back; the tunnel boring machine is characterized by further comprising a crushing device (2) positioned at the downstream of the screw conveyor (1), a screening device (3) positioned at the downstream of the crushing device (2), a bean gravel pumping device (4) and a residue conveying device (5), wherein the crushing device (2) is used for crushing stone slag conveyed by the screw conveyor (1); the screening device (3) is used for screening the stone slag crushed by the crushing device (2), the screening device (3) is provided with a first discharge port and a second discharge port, the bean gravel meeting the size requirement flows out through the first discharge port, and the residues flow out through the second discharge port; the pea gravel pumping device (4) is used for conveying the pea gravel flowing out of the first discharge hole of the screening device (3) to a backfill area (8) between the pipe piece (6) and the rock stratum (7); and the residue conveying device (5) is positioned at the downstream of the screening device (3), and the residue conveying device (5) is used for conveying the residues flowing out of the second discharge hole backwards.
2. A tunnel boring machine according to claim 1, wherein the residue conveyor (5) comprises a residue conveyor (501) and a residue transport vehicle (502), the residue transport vehicle (502) being located downstream of the residue conveyor (501).
3. A tunnel boring machine according to claim 1, wherein a ballast conveyor (12) is provided between the screw conveyor (1) and the crushing device (2), the ballast conveyor (12) conveying ballast delivered by the screw conveyor (1) back into the crushing device (2).
4. A tunnel boring machine according to claim 1 or claim 3, wherein the debris delivery means (5) is a debris wagon (502).
5. A tunneling machine according to claim 1 or 2, characterized in that the slag outlet (101) of the screw conveyor (1) is connected to the feed inlet of the crushing device (2).
6. A tunnel boring machine according to claim 5, wherein the screw conveyor (1) and the crushing device (2) are arranged one above the other.
7. A tunnel boring machine according to any one of claims 1 to 3, wherein the first discharge opening of the screening device (3) is located at the front side of the screening device (3) and the second discharge opening is located at the rear side of the screening device (3).
8. A tunnel boring machine according to any one of claims 1 to 3, wherein the crushing device (2) is a hobbing crusher.
9. A tunneling machine according to any one of claims 1-3, wherein a slag outlet door (102) for controlling the opening and closing of the slag outlet (101) is provided at the slag outlet (101) of the screw conveyor (1).
10. A tunnel boring machine according to any one of claims 1 to 3, wherein the crushing means (2) and the screening means (3) are arranged one above the other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122731640.8U CN216305928U (en) | 2021-11-09 | 2021-11-09 | Tunnel boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122731640.8U CN216305928U (en) | 2021-11-09 | 2021-11-09 | Tunnel boring machine |
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| Publication Number | Publication Date |
|---|---|
| CN216305928U true CN216305928U (en) | 2022-04-15 |
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| CN202122731640.8U Active CN216305928U (en) | 2021-11-09 | 2021-11-09 | Tunnel boring machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072190A (en) * | 2023-10-17 | 2023-11-17 | 中铁隧道局集团路桥工程有限公司 | Slag discharging system for tunnel shield machine |
-
2021
- 2021-11-09 CN CN202122731640.8U patent/CN216305928U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072190A (en) * | 2023-10-17 | 2023-11-17 | 中铁隧道局集团路桥工程有限公司 | Slag discharging system for tunnel shield machine |
| CN117072190B (en) * | 2023-10-17 | 2024-02-02 | 中铁隧道局集团路桥工程有限公司 | Slag discharging system for tunnel shield machine |
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