Double-mode large shield tunneling machine with spiral deslagging function

Abstract

The utility model discloses a spiral deslagging double-mode large shield tunneling machine which comprises a machine shell, a cutter head is arranged at the front end of the machine shell, a partition plate is arranged in the machine shell, a muck bin is formed between the partition plate and the cutter head, a spiral conveyor used for discharging of the shield tunneling machine is arranged in the machine shell, and the spiral conveyor is connected with the cutter head. The feeding end of the spiral conveyor is located on the lower portion of the muck bin. A smashing device used for conducting smashing work in a TBM mode of the shield tunneling machine is further detachably arranged in the muck bin. The utility model provides two replaceable working modes, namely an EPB tunneling mode and a TBM tunneling mode, and mutual switching between the modes can be completed without disassembling and assembling large-scale parts, so that on one hand, the geological adaptability of the tunnel boring machine to different stratums is expanded, and on the other hand, rapid switching can be realized, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a double-mode large shield machine with spiral slag discharge. Background Art

[0002] Large shield machines mainly refer to earth pressure balance shield machines, slurry balance shield machines and earth pressure / TBM dual-mode shield machines with a diameter of more than 8 meters. Tunnel construction usually involves construction of strata with different geological conditions. As far as shield construction is concerned, it is necessary to divide the strata into hard rock strata and soft rock strata according to their hardness. The shield machines are also divided into two excavation modes according to the hardness of the strata. One is the TBM excavation mode suitable for hard rock strata, and the other is the EPB excavation mode suitable for soft rock strata.

[0003] In the actual tunnel construction process, hard rock strata and soft rock strata usually appear alternately, so it is necessary to replace different modes of shield machines to achieve excavation in different strata. Frequent replacement of different modes of shield machines during the construction process not only requires higher construction costs, but also requires a longer construction period, which is obviously not suitable for the current needs of efficient construction.

[0004] Therefore, there is an urgent need for a dual-mode shield machine that is suitable for both hard rock formations and soft rock formations. Utility Model Content

[0005] The utility model aims to provide a double-mode shield machine which is easy to install and has a reasonable structure, so as to overcome the shortcomings of the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A large double-mode shield machine with spiral slag discharge comprises a casing, a cutter disc is arranged at the front end of the casing, a partition is arranged inside the casing, a slag bin is formed between the partition and the cutter disc, a screw conveyor for the shield machine to discharge materials is arranged inside the casing, and the feed end of the screw conveyor is located at the lower part of the slag bin; a crushing device for the shield machine to crush materials in TBM mode is also detachably arranged in the slag bin.

[0008] Preferably, a connecting seat is provided at the bottom of the partition, and a sealing plate is provided at the top of the connecting seat; and the screw conveyor is embedded and installed in the connecting seat.

[0009] Preferably, the screw conveyor is fixed to a fixed block arranged in the casing, and the screw conveyor passes through the fixed block.

[0010] Preferably, the pulverizing device is fixed to the casing by fasteners, and a crushing roller is transversely arranged in the casing of the pulverizing device; the pulverizing device is trumpet-shaped.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides two interchangeable working modes, one is the EPB excavation mode, and the other is the TBM excavation mode. The mutual switching between the modes can be completed without disassembling large components. On the one hand, the geological adaptability of the tunnel boring machine to different strata is expanded, and on the other hand, it can be quickly switched to improve the construction efficiency. The open TBM mode adopts a crushing device for crushing work in the slag bin, so as to ensure that the excavated slag blocks block the screw conveyor in the TBM excavation mode. Moreover, it can effectively solve the problem that the screw conveyor needs to be replaced in the traditional open TBM mode, which greatly reduces the construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the open TBM mode structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the structure of the EPB excavation mode of the utility model.

[0016] Figure 3 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0017] Figure 4 It is an enlarged schematic diagram of the structure at point B of the utility model.

[0018] Figure 5 It is a schematic side view of the double-mode shield machine structure of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5 , the utility model provides a technical solution:

[0021] A large double-mode shield machine with spiral slag discharge comprises a casing 1, a cutter disc 6 is arranged at the front end of the casing 1, a partition plate 4 is arranged inside the casing 1, a slag bin 11 is formed between the partition plate 4 and the cutter disc 6, and is characterized in that: a screw conveyor 2 for the shield machine to discharge materials is arranged inside the casing 1, and the feed end of the screw conveyor 2 is located at the lower part of the slag bin 11; a crushing device 5 for the shield machine to crush materials in TBM mode is also detachably arranged inside the slag bin 11.

[0022] Among them Figure 1-4 As shown, a connecting seat 41 is provided at the bottom of the partition 4, and a sealing plate is provided at the top of the connecting seat 41; the screw conveyor 2 is embedded and installed in the connecting seat 41; the screw conveyor 2 is fixed to a fixing block 3 provided in the casing 1, and the screw conveyor 2 passes through the fixing block 3.

[0023] The crushing device 5 is fixed on the housing 1 by fasteners, and a crushing roller 51 is transversely arranged in the housing of the crushing device 5; the crushing device 5 is in a trumpet shape.

[0024] The dual-mode shield machine of the present application is converted into TBM mode when excavating in hard rock strata, and a crushing device 5 for crushing work is installed in the slag bin, without removing the screw conveyor 2; when excavating in soft rock strata, it is converted into EPB mode, and the screw conveyor 2 is embedded and installed in the connecting seat, and the slag is transported out by the screw conveyor 2; in this way, normal excavation is achieved in both modes, that is, the excavation mode can be switched at the interface between soft and hard strata to adapt to the requirements of different strata. Compared with the traditional shield machine that changes different excavation modes, this conversion of excavation modes not only saves a lot of manpower and material resources, but also greatly shortens the construction period.

[0025] Among them, two interchangeable working modes are provided, one is the EPB excavation mode, and the other is the TBM excavation mode. The switching between the modes can be completed without disassembling large components. On the one hand, it expands the geological adaptability of the tunnel boring machine to different strata, and on the other hand, it can be quickly switched to improve construction efficiency; the open TBM mode adopts a crushing device 5 for crushing work provided in the slag bin, so as to ensure that in the TBM excavation mode, the excavated slag blocks block the screw conveyor 2; moreover, it can effectively solve the need to change the position of the screw conveyor 2 when using the traditional open TBM mode, which greatly reduces the construction difficulty.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-mode large shield machine with spiral slag discharge, comprising a casing (1), a cutter disc (6) being arranged at the front end of the casing (1), a partition plate (4) being arranged inside the casing (1), a slag bin (11) being formed between the partition plate (4) and the cutter disc (6), characterized in that: A screw conveyor (2) for discharging materials from the shield machine is arranged in the casing (1), and a feeding end of the screw conveyor (2) is located at the bottom of the slag bin (11); a pulverizing device (5) for pulverizing materials in the TBM mode of the shield machine is also detachably arranged in the slag bin (11).

2. A double-mode large shield machine with spiral slag discharge according to claim 1, characterized in that: A connecting seat (41) is provided at the bottom of the partition (4), and a sealing plate is provided at the top of the connecting seat (41); the screw conveyor (2) is embedded and installed in the connecting seat (41).

3. A double-mode large shield machine with spiral slag discharge according to claim 2, characterized in that: The screw conveyor (2) is fixed to a fixed block (3) arranged in the casing (1), and the screw conveyor (2) passes through the fixed block (3).

4. A double-mode large shield machine with spiral slag discharge according to claim 1, characterized in that: The pulverizing device (5) is fixed to the casing (1) by means of fasteners, and a rolling roller (51) is transversely arranged in the casing of the pulverizing device (5); the pulverizing device (5) is in the shape of a trumpet.

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