Device for shield tunneling machine to pass through station underground excavation section

Abstract

The utility model belongs to the technical field of tunnel shield construction, and discloses a device for a shield tunneling machine to pass through a station underground excavation section, which comprises the shield tunneling machine, a rear support, a roller group, two counter-force devices, a track panel and two guide rails, the two guide rails are laid on a subsurface excavation section foundation in two rows and are parallel to each other; the rolling wheel sets comprise the first rolling wheel set and the second rolling wheel set, and the first rolling wheel set and the second rolling wheel set are matched with the two guide rails respectively. According to the utility model, the station passing space required by station passing through the rollers is smaller, the working procedure is more convenient, and only rolling friction traction power needs to be provided; the material consumption is optimized, the construction cost is effectively reduced, and the material reutilization rate is increased; and the used materials can be seen everywhere in the construction process, and the device can be implemented in different environments only by simple assembly, so that the application range of the device is effectively expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel shield construction, in particular to a device for a shield machine passing through a dark excavation section of a station. Background Art

[0002] Tunnel shields are widely used in highway tunnels, railway tunnels, subway tunnels and other projects. The shield machine can be divided into two parts: the shield machine and the after-market parts. The shield machine is mainly used to excavate tunnels, discharge soil, assemble pipe segments, and grouting, while the after-market parts mainly provide electricity, slurry, hydraulic oil, etc. for the shield machine. When excavating a tunnel, the shield machine moves forward to excavate, and the rail wheels at the bottom of the after-market parts are laid on the rails in the excavated tunnel and move forward. In the construction of subway tunnel projects, the station is usually constructed first and then the tunnel part. In order to ensure the continuity and quality of the construction, it is usually After the shield machine has constructed a tunnel, it will pass through the built station to enter the next tunnel for construction. Therefore, how the shield machine passes the station for construction becomes a problem that needs to be solved. There are generally two methods for the existing shield machines and their subsequent supporting equipment to pass the station, namely, using pipe segments to propel the machine through the station or using an external propulsion device to pass the station. However, the above methods consume a lot of materials, resulting in high costs. In addition, the installation time of the external device is long, and the efficiency of the shield machine passing the station is low, resulting in a long construction period. Therefore, we propose a device and method for a shield machine to pass the dark excavation section of a station to solve the above problems. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a device for a shield machine to pass through a dark excavation section of a station, which solves the problems of high cost and low efficiency of the shield machine passing through the station.

[0004] The utility model is realized by the following scheme: a device for a shield machine passing through a dark excavation section of a station, comprising a shield machine and a rear supporting device, and also comprising a roller group, two reaction force devices, a rail row and two guide rails;

[0005] The two guide rails are laid in two rows on the foundation of the dark excavation section, and the two guide rails are parallel to each other;

[0006] The roller group includes a first roller group and a second roller group, and the first roller group and the second roller group are respectively adapted to the two guide rails; the first roller group and the second roller group are both connected to the bottom of the shield machine and are symmetrical along the central axis of the shield machine;

[0007] The two reaction devices each include a clamping end and a pushing end, the clamping end is fixedly connected to the pushing end, the clamping ends of the two reaction devices are detachably arranged on the two guide rails, and the first roller group and the second roller group are respectively pushed to roll along the two guide rails by the pushing ends of the two reaction devices to realize the forward movement of the shield machine;

[0008] The track row is laid on the foundation of the dark excavation section and has the same extension direction as the two guide rails, and is staggered in the horizontal direction; the top elevations of the two guide rails are lower than the top elevations of the track row; the laid track row is aligned and connected with the track row in the tunnel to form a track row group, so that the subsequent supporting equipment can move forward along the track row group when the shield machine moves forward along the two guide rails.

[0009] A further improvement of the device for a shield machine passing through a dark excavation section of a station in the utility model is that it also includes an anti-dumping device, which includes a first support plate and a second support plate relatively connected to two sides of the shield machine, and is used to support the dark excavation section foundation when the shield machine tilts to prevent the shield machine from further tilting.

[0010] A further improvement of the device for a shield machine passing through a dark excavation section of a station in the utility model lies in that the two first support plates and the two second support plates are arranged to be inclined outwards relative to each other.

[0011] A further improvement of the device for a shield machine passing through a dark excavation section of a station in the utility model is that the first roller group includes two first rollers arranged side by side, one of the two first rollers is connected to the bottom of the front shield of the shield machine, and the other first roller is connected to the bottom of the middle shield of the shield machine;

[0012] The second roller group includes two second rollers arranged side by side, one of the two second rollers is connected to the bottom of the front shield of the shield machine, and the other second roller is connected to the bottom of the middle shield of the shield machine.

[0013] A further improvement of the device for a shield machine passing through a dark excavation section of a station in the utility model is that two first brackets are fixedly installed at the bottom of the front shield of the shield machine, and the first roller and the second roller at the bottom of the front shield of the shield machine are respectively fixed to the two first brackets to achieve connection with the bottom of the front shield of the shield machine;

[0014] Two second corbels are fixedly installed at the bottom of the shield in the shield machine, and the first roller and the second roller at the bottom of the shield in the shield machine are respectively fixed to the two second corbels to achieve connection with the bottom of the shield in the shield machine.

[0015] A further improvement of the device for a shield machine passing through a dark excavation section of a station in the utility model is that the first roller and the second roller each include a wheel frame and two wheels respectively mounted at both ends of the wheel frame and rolling along the same row of guide rails, and a jacking support for the jacking end of the reaction device to push is fixedly mounted on the wheel frame of the first roller and the second roller at the bottom of the shield of the shield machine on one side facing the tail of the shield of the shield machine.

[0016] A further improvement of the device for a shield machine passing through a dark excavation section of a station in the utility model lies in that the clamping end of the reaction device is a rail clamp, and the pushing end of the reaction device is a jack.

[0017] The utility model further improves the device for a shield machine passing through a dark excavation section of a station, and further comprises a plurality of fixing devices for fixing two guide rails on the foundation of the dark excavation section, each of the fixing devices comprising a pre-embedded plate and a pressing plate;

[0018] One end of the embedded plate is an embedded part, and the other end is a load-bearing part; the embedded parts of several embedded plates are embedded in the foundation of the dark excavation section, and the load-bearing part is exposed to support the laid guide rail;

[0019] One end of the pressure plate is a connecting portion, and the other end is a pressing portion; the connecting portion is fixed to the load-bearing portion, so that the pressing portion and the load-bearing portion can jointly clamp and fix the guide rail.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] The utility model requires a smaller space for passing the station through the roller, and the process is more convenient, and only needs to provide rolling friction traction power; it optimizes material consumption, effectively reduces construction costs, and increases the recycling rate of materials; the materials used can be found everywhere during the construction process, and only simple assembly is required, so that the device can be implemented in different environments, which effectively improves the scope of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model shows a schematic diagram of the installation position of the reaction force device.

[0023] Figure 2 The utility model shows a schematic diagram of the anti-dumping device and the installation position of the roller.

[0024] Figure 3 The figure shows the installation position diagram of the anti-dumping device of the utility model.

[0025] Figure 4 The utility model roller structure schematic diagram is shown.

[0026] Figure 5 The utility model shows a schematic diagram of the installation position of the corbel frame.

[0027] Figure 6 The figure shows the installation position diagram of the fastener of the utility model.

[0028] Figure 7 The utility model shows a schematic diagram of the installation position of the guide rail and the rail row.

[0029] In the figure: 1. Shield machine; 101. Shield tail; 102. Middle shield; 103. Front shield; 104. Cutter head; 2. Roller; 21. Wheel frame; 22. Wheel; 3. Top support; 4. Anti-dumping device; 5. Reaction device; 51. Rail clamp; 52. Jack; 6. Corbel; 7. Guide rail; 8. Fixer; 81. Pressure plate; 811. Clamping part; 812. Connecting part; 82. Embedded plate; 9. Track row; 10. Constructed tunnel; 11. Undercut section; 12. Starting shaft; 13. Tunnel to be constructed; 14. Track row in tunnel. DETAILED DESCRIPTION

[0030] In order to solve the problem of high cost and low efficiency of shield machine passing through station, the utility model provides a device for shield machine passing through station dark excavation section. The device for shield machine passing through station dark excavation section is further described below with specific embodiments combined with the accompanying drawings.

[0031] See also Figure 1 to Figure 7 As shown, a device for a shield machine passing through a dark excavation section of a station includes a shield machine 1 and a rear supporting device, and also includes a roller group, two reaction force devices 5, a rail row 9 and two guide rails 7, each of which is formed by splicing a plurality of rails;

[0032] Two guide rails 7 are laid in two rows on the foundation of the dark excavation section 11, and the two guide rails 7 are parallel to each other;

[0033] The roller group includes a first roller group and a second roller group, and the first roller group and the second roller group are respectively adapted to the two guide rails 7; the first roller group and the second roller group are both connected to the bottom of the shield machine 1, and are symmetrical along the central axis of the shield machine 1;

[0034] The two reaction devices 5 each include a clamping end and a pushing end, the clamping end is fixedly connected to the pushing end, the clamping ends of the two reaction devices 5 are respectively detachably arranged on the two rows of guide rails 7, and the pushing ends of the two reaction devices 5 respectively push the first roller group and the second roller group to roll along the two rows of guide rails 7 to realize the forward movement of the shield machine 1;

[0035] The rail row 9 is laid on the foundation of the dark excavation section 11, and has the same extension direction as the two guide rails 7, and is staggered in the horizontal direction; the top elevations of the two guide rails 7 are lower than the top elevations of the rail row (based on the characteristic that the rear matching rail wheel is higher than the roller 2 of the shield machine 1, and the specific height difference can be adjusted according to the actual application); the laid rail row 9 is aligned and connected with the rail row 14 in the tunnel to form a rail row group, so that the rear matching can move forward along the rail row group when the shield machine 1 moves forward along the two guide rails 7;

[0036] In this embodiment, the clamping end of the reaction device 5 is a rail clamp 51, and the pushing end of the reaction device 5 is a jack 52. The rail clamp 51 is used as a fixed point, and the first roller group and the second roller group are pushed by the jack 52 to move relative to each other, thereby pushing the shield machine 1 and the rear supporting part in the station dark excavation section 11 to move forward at the same time. The guide rail 7 is used in conjunction with the roller 2, the rolling friction is small, the required traction force is not large, and it is easy to implement.

[0037] The anti-dumping device 4 includes a first support plate and a second support plate connected to both sides of the shield machine 1, and is used to support the shield machine 1 on the foundation of the dark excavation section 11 when the shield machine 1 tilts to prevent the shield machine 1 from further tilting; the number of the first support plate and the second support plate are both two;

[0038] The two first support plates are respectively connected to the same side of the front shield 103 of the shield machine and the middle shield 102 of the shield machine;

[0039] The two second support plates are respectively connected to the same side of the front shield 103 and the middle shield 102, and the two second support plates and the two first support plates are symmetrical along the central axis of the shield machine 1;

[0040] The first support plate and the second support plate are arranged to be inclined outwards relative to each other.

[0041] The anti-dumping device 4 can prevent the shield machine 1 from tipping over to the left or right when moving forward, thereby improving the forward stability of the shield machine 1; the inclined first support plate and the second support plate have a better anti-dumping effect.

[0042] The first roller group includes two first rollers arranged side by side, one of the two first rollers is connected to the bottom of the front shield 103 of the shield machine 1, and the other first roller is connected to the bottom of the middle shield 102 of the shield machine 1;

[0043] The second roller group includes two second rollers arranged side by side, one of the two second rollers is connected to the bottom of the front shield 103 of the shield machine 1 , and the other second roller is connected to the bottom of the middle shield 102 of the shield machine 1 .

[0044] The first roller and the second roller are the same rollers 2 in this embodiment; by arranging two rollers 2 at the bottom of the front shield 103 and two rollers 2 at the bottom of the middle shield 102, because most of the weight of the shield machine 1 is located in the front shield 103 and the middle shield 102 area, such a design can improve the stability of the shield machine 1 moving along the guide rail 7.

[0045] Among them, two first brackets are fixedly installed at the bottom of the front shield 103 of the shield machine 1, and the first roller and the second roller at the bottom of the front shield 103 of the shield machine 1 are respectively welded and fixed to the two first brackets to achieve connection with the bottom of the front shield 103 of the shield machine 1;

[0046] Two second brackets are fixedly installed at the bottom of the shield 102 of the shield machine 1 , and the first roller and the second roller at the bottom of the shield 102 of the shield machine 1 are respectively welded and fixed to the two second brackets to achieve connection with the bottom of the shield 102 of the shield machine 1 .

[0047] The first corbel frame and the second corbel frame are both corbel frames 6 . The arrangement of the corbel frames 6 can improve the connection and force stability between the roller 2 and the shield machine 1 , so as to improve the stability of the shield machine 1 when moving forward.

[0048] Among them, the first roller and the second roller each include a wheel frame 21 and two wheels 22 respectively installed at both ends of the wheel frame 21 and rolling along the same row of guide rails 7. The wheel frames 21 of the first roller and the second roller at the bottom of the shield 102 of the shield machine 1 are fixedly installed with a jacking support 3 for pushing by the pushing end of the reaction device 5 on the side facing the shield tail 101 of the shield machine 1.

[0049] Through the above design, the force balance of the roller 2 can be improved, thereby improving the stability of the shield machine 1 when moving forward.

[0050] The invention also includes a plurality of fixing devices 8 for fixing the two guide rails 7 on the foundation of the dark excavation section 11, each fixing device 8 includes a pre-embedded plate 82 and a pressing plate 81;

[0051] One end of the embedded plate 82 is the embedded part, and the other end is the load-bearing part; the embedded parts of the plurality of embedded plates 82 are embedded in the foundation of the dark excavation 11, and the load-bearing part is exposed to support the laid guide rail 7;

[0052] One end of the pressing plate 81 is a connecting portion 812 , and the other end is a pressing portion 811 ; the connecting portion 812 is welded and fixed to the load-bearing portion, so that the pressing portion 811 and the load-bearing portion can clamp and fix the guide rail 7 together.

[0053] The two rows of guide rails 7 and the rail row 9 can be firmly fixed to the foundation of the underground excavation section 11 of the station by the fixing device 8, so as to ensure the stability of the guide rails 7 and the rail row 9 when in use.

[0054] A method for a shield machine to pass through a station dark excavation section using the above-mentioned device for a shield machine to pass through a station dark excavation section comprises the following steps:

[0055] Step 1: Lay two parallel guide rails 7 on the foundation of the dark excavation section 11 according to the planned travel route;

[0056] Step 2: When the front shield of the shield machine 1 digs out the entrance of the constructed tunnel 10, the first roller and the second roller corresponding to the two guide rails 7 are welded and fixed at the bottom of the front shield 103; when the middle shield 102 of the shield machine 1 digs out the entrance of the constructed tunnel 10, the first roller and the second roller corresponding to the two guide rails 7 are welded and fixed at the bottom of the middle shield 102, and the shield machine 1 is continuously pushed to completely leave the entrance of the constructed tunnel 10, so that the first roller and the second roller at the bottom of the front shield 103 and the middle shield 102 roll along the two guide rails 7 respectively;

[0057] Step 3: Install a reaction force device 5 on each of the two guide rails 7 located in the shield tail 101 area of ​​the shield machine 1, clamp and fix them on the guide rails 7 using a rail clamp 51, and make the output end of the jack 52 abut against the top support 3 on the first roller and the second roller at the bottom of the shield 102 of the shield machine 1;

[0058] Step 4: Lay the rails 9 on the foundation of the dark excavation section 11 according to the planned route, and align and connect the laid rails 9 with the rails 14 in the tunnel;

[0059] Step 5: Start the two reaction devices 5 so that the jacks 52 push the support, thereby pushing the shield machine 1 and the rear supporting trolley forward at the same time. When the jacks 52 push out a certain distance (preferably the maximum distance that the jacks 52 can push out), remove the reaction devices 5 from the guide rails 7;

[0060] Step 6: Repeat steps 3 and 5 until the shield machine 1 moves forward to the starting shaft 12 (the starting shaft 12 is the starting shaft in front of the tunnel 13 to be constructed for secondary starting).

[0061] The method for the shield machine 1 to pass through the dark excavation section 11 of the station further comprises the following steps:

[0062] Lay rails horizontally on the bottom plate of the launching shaft 12;

[0063] Place the starting frame on the rails, and control the starting elevation (when the starting shaft 12 is backfilled with concrete, the height of the paving material can be controlled) to align with the shield machine 1 that moves forward, and set two reaction force supports between the starting frame and the end wall of the tunnel portal to prevent the starting frame from moving forward when the shield machine 1 pushes onto the starting frame;

[0064] When the cutter head 104 and part of the front shield of the shield machine 1 move forward to the starting frame, cut off the first roller and the second roller at the bottom of the front shield 103, and then continue to move the shield machine 1 forward and cut off the first roller and the second roller at the bottom of the middle shield 102, so that the shield machine 1 moves to the starting frame as a whole;

[0065] The shield machine 1 together with the starting frame is translated horizontally to the starting position, the starting posture is adjusted, the starting reaction frame is installed, and a new start is waited for (the steps of adjusting and restarting the station are prior art and will not be described in detail here).

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A device for a shield machine passing through a dark excavation section of a station, comprising a shield machine and a rear supporting device, characterized in that: It also includes a roller assembly, two reaction devices, a track row and two guide rails; The two guide rails are laid in two rows on the foundation of the dark excavation section, and the two guide rails are parallel to each other; The roller group includes a first roller group and a second roller group, and the first roller group and the second roller group are respectively adapted to the two guide rails; the first roller group and the second roller group are both connected to the bottom of the shield machine and are symmetrical along the central axis of the shield machine; The two reaction devices each include a clamping end and a pushing end, the clamping end is fixedly connected to the pushing end, the clamping ends of the two reaction devices are detachably arranged on the two guide rails, and the first roller group and the second roller group are respectively pushed to roll along the two guide rails by the pushing ends of the two reaction devices to realize the forward movement of the shield machine; The track row is laid on the foundation of the dark excavation section and has the same extension direction as the two guide rails, and is staggered in the horizontal direction; the top elevations of the two guide rails are lower than the top elevations of the track row; the laid track row is aligned and connected with the track row in the tunnel to form a track row group, so that the subsequent supporting equipment can move forward along the track row group when the shield machine moves forward along the two guide rails.

2. A device for a shield machine passing through a station dark excavation section as claimed in claim 1, characterized in that: It also includes an anti-dumping device, which includes a first support plate and a second support plate relatively connected to both sides of the shield machine, and is used to support the shield machine on the foundation of the dark excavation section when the shield machine tilts to prevent the shield machine from further tilting.

3. A device for a shield machine passing through a station dark excavation section as claimed in claim 2, characterized in that: The first support plate and the second support plate are arranged to be inclined outwards relative to each other.

4. The device for a shield machine passing through a station dark excavation section as claimed in claim 1, characterized in that: The first roller group includes two first rollers arranged side by side, one of the two first rollers is connected to the bottom of the front shield of the shield machine, and the other first roller is connected to the bottom of the middle shield of the shield machine; The second roller group includes two second rollers arranged side by side, one of the two second rollers is connected to the bottom of the front shield of the shield machine, and the other second roller is connected to the bottom of the middle shield of the shield machine.

5. A device for a shield machine passing through a station dark excavation section as claimed in claim 4, characterized in that: Two first brackets are fixedly installed at the bottom of the front shield of the shield machine, and the first roller and the second roller at the bottom of the front shield of the shield machine are respectively fixed to the two first brackets to achieve connection with the bottom of the front shield of the shield machine; Two second corbels are fixedly installed at the bottom of the shield in the shield machine, and the first roller and the second roller at the bottom of the shield in the shield machine are respectively fixed to the two second corbels to achieve connection with the bottom of the shield in the shield machine.

6. A device for a shield machine passing through a station dark excavation section as claimed in claim 4, characterized in that: The first roller and the second roller each include a wheel frame and two wheels respectively mounted at both ends of the wheel frame and rolling along the same row of guide rails; the wheel frames of the first roller and the second roller at the bottom of the shield of the shield machine are fixedly mounted with a jacking support for the jacking end of the reaction device to push on one side facing the tail of the shield of the shield machine.

7. The device for a shield machine passing through a station dark excavation section as claimed in claim 1, characterized in that: The clamping end of the reaction device is a rail clamp, and the pushing end of the reaction device is a jack.

8. The device for a shield machine passing through a station dark excavation section as claimed in claim 1, characterized in that: It also includes a plurality of fixers for fixing the two guide rails on the foundation of the dark excavation section, each of the fixers includes an embedded plate and a pressure plate; One end of the embedded plate is an embedded part, and the other end is a load-bearing part; the embedded parts of several embedded plates are embedded in the foundation of the dark excavation section, and the load-bearing part is exposed to support the laid guide rail; One end of the pressure plate is a connecting portion, and the other end is a pressing portion; the connecting portion is fixed to the load-bearing portion, so that the pressing portion and the load-bearing portion can jointly clamp and fix the guide rail.

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