A kind of excavation device suitable for up and down stacked subway interval passage

Abstract

The application relates to the technical field of liaison passage construction, and particularly discloses an excavation device suitable for up-and-down stacked ground-level metro interval passages, which comprises a steel sleeve pipe arranged between two horizontal passages, a digging device detachably arranged on the upper end of the steel sleeve pipe, a rotary driving device detachably arranged on the lower end of the steel sleeve pipe, reinforcing rings stacked on the digging device and detachably connected together between adjacent reinforcing rings, and the rotary driving device drives the steel sleeve pipe and the digging device to rotate, so that a longitudinal passage is dug between the two horizontal passages. The application has the beneficial effect that the digging device is rotated to dig the vertical passage, the self gravity of the reinforcing rings is used to provide the downward pressure for the digging device in the digging process, the digging device and the steel sleeve pipe are simultaneously moved downwards, and the reinforcing rings are used to reinforce and support the dug longitudinal passage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication passage construction, and particularly relates to an excavation device suitable for up-down stacked subway interval passages. BACKGROUND

[0002] When a subway is built in a crowded city, the route is often restricted by high-rise buildings, viaduct piles, underpasses and existing pipelines, and various schemes to increase construction difficulty and construction risk have to be adopted. Because of the limited width of underground space or the construction of multiple subway lines, the situation of stacked subway intervals is becoming more and more common. Adjacent stacked subway intervals usually need to be provided with a communication passage. As shown in FIG. 1, when the communication passage is excavated, a horizontal passage 200 is excavated on the side of the upper and lower tunnels 100, and after the horizontal passage 200 is supported and reinforced, a vertical passage 300 is excavated between the two horizontal passages 200. As shown in FIG. 2, the prior art first drills a process hole between the two horizontal passages 200, and a steel casing 400 is arranged in the process hole. The steel casing 400 can be disassembled in sections, and in the excavation process, the steel casing 400 is disassembled one by one, and the excavated soil is poured into the lower horizontal passage 200 from the steel casing 400, and finally the excavated soil is discharged from the horizontal passage 200. However, in the excavation process, the inner wall of the vertical passage 300 has no effective support, and the vertical passage 300 is prone to collapse during excavation. Figure 8 SUMMARY Figure 9 The present application relates to the technical field of communication passage construction, and particularly relates to an excavation device suitable for up-down stacked subway interval passages. The present application relates to the technical field of communication passage construction, and particularly relates to an excavation device suitable for up-down stacked subway interval passages.

[0003] The present application relates to the technical field of communication passage construction, and particularly relates to an excavation device suitable for up-down stacked subway interval passages.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] The present application relates to the technical field of communication passage construction, and particularly relates to an excavation device suitable for up-down stacked subway interval passages.

[0006] Preferably, the excavation device comprises coaxially arranged outer and inner rings, a plurality of connecting rods are arranged between the outer and inner rings, a plurality of cutters are arranged on the lower sides of the connecting rods, the outer ring and the inner ring, and the uppermost end of the inner ring is detachably fixed to the steel casing.

[0007] Preferably, the rotating driving device comprises a support, a sleeve ring is fixedly connected on the support through a connecting plate, a rotating ring is rotatably connected in the sleeve ring, a plurality of locking devices are mounted on the rotating ring, the locking devices can be temporarily locked together with the steel sleeve, a power device is mounted on the connecting plate, and the power device is used to drive the rotating ring to rotate.

[0008] Preferably, the steel sleeve comprises a plurality of detachably fixed sleeve units, and a plurality of longitudinal grooves are arranged on the sleeve units.

[0009] Preferably, the locking device comprises a stand, a plug rod is slidably connected on one side of the stand, the plug rod can be inserted into the longitudinal groove, an extender is arranged on the stand, and the extender is used to drive the plug rod to be inserted into the longitudinal groove or pulled out of the longitudinal groove.

[0010] Preferably, a guide hole is arranged on each reinforcing ring, a guide rod is arranged in each guide hole, a lower end of the guide rod on the lowermost reinforcing ring is fixedly connected with a supporting plate, an annular clamping groove is arranged on an upper end of the guide rod, adjacent guide rods can be detachably connected together, and a pressure adjusting device is arranged on one side of the guide rod.

[0011] Preferably, the pressure adjusting device comprises a moving trolley, two vertical guide columns are fixedly connected on one side of the moving trolley, an extender rod is slidably connected on one side of each guide column, a clamping jaw is fixedly connected on one end of each extender rod, and the clamping jaw is arranged in correspondence with the annular clamping groove.

[0012] The excavating device provided by the application is suitable for excavating an up-and-down stacked subway interval passage, a digging device is used to dig the vertical passage, the self-gravity of the reinforcing ring is used to provide a downward pressure for the digging device in the digging process, the digging device and the steel sleeve are moved downward, and the reinforcing ring is used to reinforce and support the dug longitudinal passage. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a process flow chart of the application;

[0014] Figure 2 is Figure 1 a perspective state diagram of the application;

[0015] Figure 3 is a basic structure state diagram of the application;

[0016] Figure 4 is Figure 3 an enlarged view of A of the application;

[0017] Figure 5 is a basic structure state diagram of the digging device;

[0018] Figure 6is a use diagram of the excavation device and the reinforcing ring;

[0019] Figure 7 is a use diagram of the reinforcing ring and the pressure adjusting device;

[0020] Figure 8 is a structural diagram of a connecting passage in the prior art;

[0021] Figure 9 is a process state diagram of excavation of a connecting passage in the prior art. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0023] As shown in Figures 1-9 , the excavation device suitable for the up-and-down stacked subway interval passage of the present embodiment comprises a steel casing pipe 1 arranged between two lateral passages 200. The arrangement of the steel casing pipe 1 between the two lateral passages 200 is the prior art, which will not be described here. The steel casing pipe 1 comprises a plurality of detachably fixed casing pipe units 11. The connection between the casing pipe units 11 is the prior art, which will not be described here. A plurality of longitudinal grooves 12 are arranged on the casing pipe units 11.

[0024] A detachable excavation device 3 is arranged on the upper end of the steel casing pipe 1. The excavation device 3 comprises an outer ring 31 and an inner ring 32 arranged coaxially. A plurality of connecting rods 33 are arranged between the outer ring 31 and the inner ring 32. The inner ring 32 is detachably fixed with the uppermost casing pipe unit 11. A plurality of cutters 34 are arranged on the lower side of the connecting rods 33, the outer ring 31 and the inner ring 32.

[0025] A detachable rotary driving device 2 is arranged on the lower end of the steel casing pipe 1. The rotary driving device 2 comprises a support 20. A sleeve ring 21 is fixedly connected to the support 20 through a connecting plate 22. A rotating ring 23 is rotatably connected in the sleeve ring 21. A plurality of locking devices are arranged on the rotating ring 23. The locking devices can be temporarily locked with the steel casing pipe 1. The locking devices comprise a vertical column 24. A plug rod 25 is slidably connected to one side of the vertical column 24. The plug rod 25 can be inserted into the longitudinal groove 12. An extender 26 is arranged on the vertical column 24. The extender 26 is used to drive the plug rod 25 to be inserted into the longitudinal groove 12 or to be pulled out of the longitudinal groove 12. The extender 26 is the prior art, which will not be described here. A power device is arranged on the connecting plate 22. The power device is used to drive the rotating ring 23 to rotate. The power device comprises a motor, a gear 27 and a gear ring 28. The gear ring 28 is coaxially fixed on the outer side of the rotating ring 23. The motor is fixed on the connecting plate 22. The gear 27 is installed on the main shaft of the motor. The gear 27 is engaged with the gear ring 28.

[0026] The reinforcing rings 4 are stacked on the outer ring 31, the lowermost reinforcing ring 4 is detachably fixed with the outer ring 31, the detachable fixing manner is the prior art, which is not described here again, the adjacent reinforcing rings 4 are detachably connected together, and the connection manner between the adjacent reinforcing rings 4 is also the prior art. The rotary driving device 2 drives the steel casing 1 and the digging device 3 to rotate, so as to dig the longitudinal channel between the two transverse channels 200, and the reinforcing rings 4 provide downward pressure on the digging device 3 due to their own gravity, so that the digging device 3 and the steel casing 1 move downward, and the reinforcing rings 4 support and reinforce the dug longitudinal channel. During the digging process, the lowermost casing unit 11 is removed, and the upper reinforcing ring 4 is added, along with the digging process. The debris generated during the digging process can be thrown from the steel casing 1 into the lower transverse channel 100 and transported out of the transverse channel 100.

[0027] During use, after the insertion rod 25 is driven by the retractor 26 to be inserted into the longitudinal groove 12, the rotary ring 23 is driven to rotate by the power device, and the entire steel casing 1 and the digging device 3 can be driven to rotate under the action of the insertion rod 25. When the digging device rotates, the lower rock-soil is cut by the cutter at the bottom of the digging device, so as to dig the longitudinal channel 200, and in the digging process, the reinforcing rings 4 provide downward pressure on the digging device 3 due to their own gravity, so that the digging device 3 and the steel casing 1 move downward, and the reinforcing rings 4 support and reinforce the dug longitudinal channel.

[0028] In order to prevent the reinforcing rings 4 from deviating during the digging process, and at the same time, when all the reinforcing rings 4 are stacked above the digging device 3, the pressure received by the digging device 3 is too large and difficult to rotate, the present embodiment is provided with the following arrangement: a guide hole is arranged on each reinforcing ring 4, a guide rod 5 is arranged in each guide hole, and the reinforcing ring 4 can slide along the guide rod 5. Thus, the reinforcing ring 4 is guided by the guide rod 5, and deviation of the reinforcing ring 4 is avoided as much as possible.

[0029] The lowermost reinforcing ring 4 is fixedly connected with a supporting plate 52 at the lower end of a guide rod 5, and the upper end of the guide rod 5 is provided with an annular clamping groove 51. The guide rods 5 arranged above and below each other can be detachably connected together, and a pressure adjusting device 6 is arranged at one side of the guide rod 5. The pressure adjusting device 6 comprises a moving trolley 61, and two vertically arranged guide columns 62 are fixedly connected to one side of the moving trolley 61. A telescopic rod 63 is slidably connected to one side of each guide column 62, and the telescopic rod 63 is a hydraulic cylinder. A clamping jaw 64 is fixedly connected to one end of each telescopic rod 63, and the clamping jaw 64 is an open-close type clamping jaw, which is a prior art and will not be described here. The clamping jaw 64 is arranged in correspondence with the annular clamping groove 51. The clamping jaw 64 is clamped at the annular clamping groove 51 of the guide rod 5, and the bottom of the reinforcing ring 4 is lifted by the clamping jaw 64 and the supporting plate 52, so that part of the pressure of the reinforcing ring 4 can be shared, and the direct pressure of the reinforcing ring 4 on the excavating device is reduced. The reason why two guide columns 62 and two clamping jaws are arranged on each moving trolley 61 is as follows: first, as the reinforcing ring 4 descends, the clamping jaw 64 also needs to descend. When the upper reinforcing ring 4 is installed, the clamping jaw 64 needs to be loosened from the annular clamping groove 51 and lifted to clamp the annular clamping groove 51 above. When the clamping jaw 64 needs to be loosened, the reinforcing ring 4 will generate an instantaneous downward pressure on the excavating device, which may cause the cutter at the bottom of the excavating device to be damaged. Therefore, after two clamping jaws 64 are arranged, the two clamping jaws 64 can be used alternately, and the reinforcing ring 4 is always provided with a lifting force, so that the excavating device is prevented from being damaged due to excessive stress. Second, when the reinforcing ring 4 deviates during the excavation of the vertical channel, the clamping jaw 64 is driven by the telescopic rod 63 to move forward and backward, so that the position of the reinforcing ring 4 can be adjusted, and the deviation of the reinforcing ring 4 is further prevented.

Claims

1. An excavation device suitable for over-under stacking of a subway passage, comprising a steel casing (1) arranged between two lateral passages (200), characterized in that: The excavating device (3) is detachably arranged on the upper end of the steel casing (1), the rotary driving device (2) is detachably arranged on the lower end of the steel casing (1), the reinforcing rings (4) are arranged in stacks on the excavating device (3), the adjacent reinforcing rings (4) are detachably connected together, the rotary driving device (2) drives the steel casing (1) and the excavating device (3) to rotate, so as to excavate a longitudinal channel between two transverse channels (200), the reinforcing rings (4) provide downward pressure on the excavating device (3) due to their own gravity, so that the excavating device (3) and the steel casing (1) move downward, and the reinforcing rings (4) support the excavated longitudinal channel; Each of the reinforcing rings (4) is provided with a guide hole, each guide hole is provided with a guide rod (5), the lower end of the guide rod (5) on the lowermost reinforcing ring (4) is fixedly connected with a supporting plate (52), the upper end of the guide rod (5) is provided with an annular clamping groove (51), the adjacent guide rods (5) are detachably connected together, and a pressure adjusting device (6) is arranged on one side of the guide rod (5).

2. The excavation device suitable for the up-and-down stacked underground passage according to claim 1, characterized in that: The excavating device (3) comprises coaxially arranged outer rings (31) and inner rings (32), a plurality of connecting rods (33) are arranged between the outer rings (31) and the inner rings (32), a plurality of cutters (34) are arranged on the lower sides of the connecting rods (33), the outer rings (31) and the inner rings (32), and the uppermost end of the inner rings (32) is detachably fixed with the steel casing (1).

3. The excavation device for the up-and-down stacked underground passage according to claim 1, characterized in that: The rotary driving device (2) comprises a support (20), a sleeve ring (21) is fixedly connected to the support (20) through a connecting plate (22), a rotating ring (23) is rotatably connected to the sleeve ring (21), a plurality of locking devices are arranged on the rotating ring (23) and can be temporarily locked with the steel casing (1), a power device is arranged on the connecting plate (22) and is used for driving the rotating ring (23) to rotate.

4. The excavation device suitable for the up-and-down stacked underground passage according to claim 3, characterized in that: The steel casing (1) comprises a plurality of detachably fixed casing units (11), and a plurality of longitudinal grooves (12) are arranged on the casing units (11).

5. A device for excavating a tunnel according to claim 4, wherein: The locking device comprises a vertical column (24), a plug rod (25) is slidably connected to one side of the vertical column (24), the plug rod (25) can be inserted into the longitudinal groove (12), an extender (26) is arranged on the vertical column (24) and is used for driving the plug rod (25) to be inserted into the longitudinal groove (12) or pulled out of the longitudinal groove (12).

6. The excavation device for the over-under stacked passage of the subway section according to claim 1, characterized in that: The pressure adjusting device (6) comprises a moving trolley (61), two vertically arranged guide columns (62) are fixedly connected to one side of the moving trolley (61), a telescopic rod (63) is slidably connected to one side of each guide column (62), a clamping jaw (64) is fixedly connected to one end of each telescopic rod (63), and the clamping jaw (64) is arranged in correspondence with the annular clamping groove (51).

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