Shield / TBM empty pushing device

Abstract

The utility model discloses a shield / TBM (Tunnel Boring Machine) empty pushing device, which solves the problems of long construction period and high cost caused by continuous tunneling and empty pushing of a tunneling machine to a specified position of a station in the prior art. The shield / TBM empty pushing device comprises a receiving bracket and jacking mechanisms, the receiving bracket is used for bearing a heading machine and can do axial stepping motion relative to the heading machine, the jacking mechanisms are used for vertically jacking the heading machine, the receiving bracket is connected with the heading machine through an axial telescopic piece, and the jacking mechanisms are detachably arranged on the heading machine and located on the two sides of the receiving bracket. The receiving bracket in axial stepping motion is matched with the jacking mechanism used for vertically pushing the heading machine, the heading machine going out of a hole can be stably supported, meanwhile, along with movement of the heading machine, the jacking mechanism and the receiving bracket synchronously move, complex procedures such as full laying of steel plates in a station are avoided, and the working efficiency is improved. The operation time and the construction cost are greatly saved, and meanwhile the safety is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field, especially point to a kind of empty pushing device of driving machine in tunnel, existing station empty pushing, passing subway station. BACKGROUND

[0002] In recent years, domestic urban tunnel construction develops rapidly, and shield method is very suitable for urban tunnel construction, so it establishes a dominant position in urban subway tunnel construction technology. Most subway stations are located in the bustling areas of the city, and the construction period is long, which has a great impact on the transportation and environment of the construction area. To reduce the negative impact, the station design is usually very compact, making the ground construction area of the station particularly tight. In densely populated areas, the interval between tunnels is small, and the driving machine needs to quickly complete the transfer and proceed to the next interval of driving construction. When the construction site is small, it does not have the conditions for shield hoisting or the station roof is already closed and cannot hoist the driving machine. The driving machine can be used to push through the station, and the driving machine (or split) is pushed and translated through the existing station to the starting position at the other end of the station, and directly proceeds to the next tunnel driving construction.

[0003] In recent years, with the rapid development of shield method, there have been related researches on empty pushing, which mostly uses pre-buried steel rails in existing stations and uses top pushing cylinders for empty pushing. For example, a sliding block device and construction method for shield machine empty pushing and passing station disclosed in Chinese patent application No. 202111436783.4, the sliding block device is formed by welding, and after the shield body is pushed out for a certain distance, the sliding block device is welded on the shield body. Finally, the shield pushing cylinder acts on the bottom single block segment to make the shield machine advance quickly. However, it has the problems of long construction period, non-universal receiving bracket, high use cost, etc., and is currently less used. Therefore, it is necessary to design a construction method that can quickly and low-cost complete the empty pushing of driving machine through the station. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the above background technology, the utility model provides a shield / TBM empty pushing device, which solves the problems of long construction period and high cost of driving machine continuous tunneling and empty pushing to the specified position of the station in the prior art.

[0005] The utility model discloses a technical scheme is as follows: a shield / TBM empty push device, including the receiving bracket for supporting the heading machine and can be axially stepped motion relative to the heading machine and the jacking mechanism for vertical pushing the heading machine, receiving bracket is connected with the heading machine through the axial telescopic piece, and the jacking mechanism is detachably arranged on the heading machine and is located the receiving bracket both sides.

[0006] Further, the receiving bracket is arranged at the bottom of the heading machine shell and in front of the tunnel portal, and the central axis of the receiving bracket is lower than the axis elevation of the tunnel portal.

[0007] As an embodiment, the receiving bracket is symmetrically arranged at the bottom of the heading machine, one end of the axial telescopic piece is hinged to the heading machine shell, and the other end is hinged to the receiving bracket. The receiving bracket provides stable support for the heading machine, and moves forward and backward under the action of the axial telescopic piece to realize the step-by-step movement of the receiving bracket. This embodiment takes the example of the receiving bracket being arranged at the left and right sides of the bottom of the heading machine to provide stable support for the heading machine.

[0008] Preferably, the receiving bracket comprises a frame body and guide rails arranged on the frame body, the frame body is symmetrically arranged at the bottom of the heading machine, and the guide rails are support points when the receiving bracket supports the heading machine; the guide rails are provided with friction-reducing objects. The friction-reducing objects reduce the frictional resistance coefficient between the receiving bracket and the heading machine. One corresponding guide rail is arranged on each receiving bracket at the left and right sides to provide two supports for the heading machine. The axial telescopic piece can not only connect the heading machine and the receiving bracket, but also drive the axial movement of the receiving bracket.

[0009] As an embodiment, the receiving bracket is arranged at the bottom of the heading machine, one end of the axial telescopic piece is hinged to the heading machine shell, and the other end is hinged to the receiving bracket. This embodiment takes the example of the receiving bracket being arranged at the bottom of the heading machine to provide stable support for the heading machine.

[0010] Preferably, the receiving bracket comprises a frame body and guide rails arranged on the frame body, the frame body is symmetrically arranged at the bottom of the heading machine, and the guide rails are support points when the receiving bracket supports the heading machine; the guide rails are provided with friction-reducing objects. The friction-reducing objects reduce the frictional resistance coefficient between the receiving bracket and the heading machine. This receiving bracket provides two stable supports for the heading machine through the two symmetrically arranged guide rails.

[0011] Preferably, the axial telescopic part is a pushing oil cylinder, the first ear seat is arranged on the tunneling machine shell, the second ear seat is arranged on the receiving bracket, and the two ends of the pushing oil cylinder are hinged to the first ear seat and the second ear seat respectively.

[0012] Further, the jacking mechanism comprises a plurality of jacking oil cylinders symmetrically arranged on both sides of the tunneling machine shell, and the jacking oil cylinders are connected to the jacking seats arranged on the tunneling machine shell.

[0013] As a mode, the support pad is connected to the jacking seat through a hoist and corresponds to the jacking oil cylinder.

[0014] As another mode, the support pad is detachably connected to the bottom of the jacking oil cylinder.

[0015] The utility model discloses the beneficial effects are: the utility model discloses the cooperation of receiving bracket of axial step -by -step movement and the jacking mechanism for vertical pushing tunneling machine, can carry out stable support to the tunneling machine of going out of the hole, and with the removal of tunneling machine, the jacking mechanism and receiving bracket carry out synchronous movement, avoid the complex procedure of in -station full -paved steel plate, frequent burning welding, pre -buried steel rail etc.

[0016] The receiving bracket is matched with the pushing oil cylinder, the pushing oil cylinder adopts the structure design of two end hinges, can satisfy the tunneling machine when carrying out jacking action and can be separated from the receiving bracket, and the step -by -step movement of the receiving bracket is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the utility model embodiments, the following will be needed to use the drawings in the embodiment description briefly introduced, obviously, the following description in the drawings is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0018] Figure 1 It is the tunneling machine empty push side view of the utility model;

[0019] Figure 2The utility model discloses a tunneling machine empty push front view.

[0020] Figure 3 It is tunneling machine jacking state schematic drawing.

[0021] Figure 4 It is receiving bracket forward state schematic drawing.

[0022] Figure 5 It is tunneling machine forward schematic drawing.

[0023] In the drawing: 1. tunneling machine, 2. existing station side wall, 3. receiving bracket, 31. frame body, 32. guide rail, 4. shield body jacking seat, 5. jacking oil cylinder, 6. hand-operated hoist, 7. support cushion block, 8. pushing oil cylinder, 9. first ear seat, 10. second ear seat, 11. jacking mechanism DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] In the description of the present application, it should be understood that the terms "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium, it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] As Figure 1As shown in the embodiment 1, a shield / TBM empty pushing device includes a receiving bracket 3 for supporting the tunneling machine 1 and capable of axial stepping movement relative to the tunneling machine 1, and a jacking mechanism 11 for vertically jacking the tunneling machine 1, the receiving bracket 3 being connected to the tunneling machine 1 through an axial telescopic member 8, and the jacking mechanism 11 being detachably arranged on the tunneling machine 1 and located on both sides of the receiving bracket 3. After the tunneling machine exits the tunnel portal, it continues to advance to the receiving bracket, which supports the tunneling machine; then the jacking mechanism jacks up the tunneling machine to the receiving bracket, at this time, the receiving bracket moves axially relative to the tunneling machine under the action of the axial telescopic member 8, and the receiving bracket realizes stepping movement; thus, full-paved steel plates in the station, frequent welding, and pre-buried steel rails are avoided, the operation time and construction cost are greatly saved, and the safety is effectively guaranteed.

[0028] In the embodiment, the receiving bracket 3 is arranged at the bottom of the tunneling machine 1 shell and located in front of the tunnel portal, and the central axis of the receiving bracket 3 is lower than the elevation of the tunnel portal axis. In the specific construction, the receiving bracket is laid in front of the tunnel portal before the tunneling machine exits the tunnel portal, and the receiving bracket axis is slightly lower than the elevation of the tunnel portal axis, so as to facilitate the smooth jacking of the tunneling machine to the receiving bracket.

[0029] As shown in the embodiment 2, Figure 2 on the basis of the embodiment 1, the receiving bracket 3 is symmetrically arranged on both sides of the bottom of the tunneling machine 1; that is, two receiving brackets are symmetrically arranged on both sides of the bottom of the tunneling machine in the embodiment, and the receiving brackets on both sides provide support for the tunneling machine to ensure the stability of the support. Correspondingly, the receiving brackets on both sides are respectively connected with two axial telescopic members. One end of the axial telescopic member 8 is hinged to the tunneling machine 1 shell, and the other end is hinged to the receiving bracket 3. Specifically, the axial telescopic member 8 is a jacking oil cylinder, and the jacking oil cylinder is connected with an external hydraulic pump station. A first ear seat 9 is arranged on the tunneling machine 1 shell, the first ear seat 9 is adapted to the jacking oil cylinder, a second ear seat 10 is arranged on the receiving bracket 3, the second ear seat 10 is also adapted to the jacking oil cylinder, and the two ends of the jacking oil cylinder are respectively hinged to the first ear seat 9 and the second ear seat 10; wherein the jacking oil cylinder and the oil cylinder ear seat should meet the load when jacking the shield body. After installation, the oil cylinder is connected to the external hydraulic pump station. The jacking oil cylinder adopts a structure design of hinged at both ends, which can meet the requirement that the tunneling machine can be separated from the receiving bracket when jacking, and facilitates the stepping movement of the receiving bracket. The axial telescopic member can also use components such as air cylinders according to needs.

[0030] The receiving bracket 3 in the embodiment comprises a bracket body 31 and a guide rail 32 arranged on the bracket body 31, and the bracket body 31 is symmetrically arranged on both sides of the bottom of the tunneling machine 1; that is, one bracket body corresponds to one guide rail, and the tunneling machine is supported on both sides, thereby reducing the volume of the bracket body. The guide rail 32 is a support point when the receiving bracket 3 supports the tunneling machine 1; that is, the guide rail is in contact with the tunneling machine to support the tunneling machine; the guide rail 32 is provided with a friction-reducing object; the friction-reducing object can be a friction-reducing agent or a friction-reducing roller; the friction-reducing agent can be butter; the friction-reducing roller is rotationally arranged on the guide rail, and the rolling direction of the friction-reducing roller is the same as the tunneling direction of the tunneling machine, thereby reducing the friction resistance coefficient, and enabling the tunneling machine to be smoothly pushed to the receiving bracket.

[0031] In embodiment 3, a shield / TBM pushing device is further optimized on the basis of embodiment 1, and the difference between embodiment 3 and embodiment 2 is that the receiving bracket 3 in embodiment 3 is arranged on both sides of the bottom of the tunneling machine 1; that is, one receiving bracket in embodiment 3 is taken as an example, and the whole is arranged on both sides of the bottom of the tunneling machine, thereby providing support for the tunneling machine and ensuring the stability of the support. Correspondingly, the axial telescopic member is located on both sides of the receiving bracket, one end of the axial telescopic member 8 is hingedly connected to the shell of the tunneling machine 1, and the other end is hingedly connected to the receiving bracket 3. Specifically, the axial telescopic member 8 is a pushing oil cylinder, and the pushing oil cylinder is connected to an external hydraulic pump station. The shell of the tunneling machine 1 is provided with a first lug 9, the first lug 9 is matched with the pushing oil cylinder, the receiving bracket 3 is provided with a second lug 10, the second lug 10 is also matched with the pushing oil cylinder, and the two ends of the pushing oil cylinder are hingedly connected to the first lug 9 and the second lug 10, respectively; wherein the pushing oil cylinder and the oil cylinder lug should meet the load when the shield body is pushed. After installation is completed, the oil cylinder is connected to the external hydraulic pump station. The pushing oil cylinder adopts a structure design in which the two ends are hingedly connected, which can meet the requirement that the tunneling machine can be separated from the receiving bracket when the tunneling machine performs a jacking action, thereby facilitating the step-by-step movement of the receiving bracket. The axial telescopic member can also use a gas cylinder or other components according to requirements.

[0032] The receiving bracket 3 in the embodiment comprises a bracket body 31 and a guide rail 32 arranged on the bracket body 31, and the bracket body 31 is symmetrically arranged on both sides of the bottom of the tunneling machine 1; that is, one bracket body corresponds to one guide rail, and the tunneling machine is supported on both sides, thereby reducing the volume of the bracket body. The guide rail 32 is a support point when the receiving bracket 3 supports the tunneling machine 1; that is, the guide rail is in contact with the tunneling machine to support the tunneling machine; the guide rail 32 is provided with a friction-reducing object; the friction-reducing object can be a friction-reducing agent or a friction-reducing roller; the friction-reducing agent can be butter; the friction-reducing roller is rotationally arranged on the guide rail, and the rolling direction of the friction-reducing roller is the same as the tunneling direction of the tunneling machine, thereby reducing the friction resistance coefficient, and enabling the tunneling machine to be smoothly pushed to the receiving bracket.

[0033] Embodiment 4, a shield / TBM air pushing device, based on embodiments 2 or 3, the jacking mechanism 11 includes a plurality of jacking cylinders 5 symmetrically arranged on both sides of the tunneling machine 1 shell, two jacking cylinders in a group, and the two jacking cylinders in the same group are symmetrically arranged on both sides of the tunneling machine. The top of the jacking cylinder 5 is connected with the jacking seat 4 arranged on the shell of the tunneling machine 1, and as an optimization, the jacking seat is welded on the shell of the tunneling machine with an arc-shaped steel plate to improve the connection stability of the jacking cylinder. The jacking cylinder is extended in stroke to jack up the tunneling machine, the jacking cylinder is retracted in stroke to complete the forward movement of the receiving frame. The tunneling machine is lowered onto the receiving frame by retracting the jacking cylinder in stroke, and the tunneling machine is moved forward by extending the jacking cylinder in stroke, and the above steps are repeated to realize the rapid air pushing of the tunneling machine.

[0034] In this embodiment, as an optimization, a support pad 7 is arranged below the jacking cylinder 5, and the support pad can be used as a bottom support when the jacking height of the tunneling machine exceeds the stroke of the jacking cylinder. The jacking cylinder and the support pad should meet the overall jacking requirements of the shield. In this embodiment, the support pad 7 is connected to the jacking seat 4 through a hoist 6 and corresponds to the jacking cylinder 5. The height of the support pad can be adjusted through the hoist, which can adapt to different support heights and realize the movement of the support pad with the tunneling machine, thereby improving the jacking efficiency. The support pad can be selected in different specifications according to needs. In actual construction process, due to different specific use scenarios, the use of the hoist can be omitted, and the jacking cylinder can be manually transported during the air pushing process to save the purchase cost of tools and equipment.

[0035] Embodiment 5, a shield / TBM air pushing device, different from embodiment 4, the support pad 7 in this embodiment is detachably connected to the bottom of the jacking cylinder 5. The specific connection mode can adopt bolt connection, which can adapt to the jacking of the jacking cylinder at different heights and realize the movement of the support pad with the tunneling machine.

[0036] The specific steps for installing the tunneling machine air pushing device of the utility model are as follows:

[0037] (1) The jacking seat, the first ear seat and the second ear seat are welded on both sides of the tunneling machine.

[0038] (2) The jacking seat, the first ear seat and the second ear seat are welded on both sides of the tunneling machine.

[0039] (3) The jacking seat, the first ear seat and the second ear seat are welded on both sides of the tunneling machine.

[0040] The specific steps for installing the tunneling machine air pushing device of the utility model are as follows: Figures 3~5

[0041] ​(1) after the heading machine completes heading, the heading machine is pushed out of the hole to a receiving bracket, butter is smeared on the receiving bracket in advance to reduce the friction resistance coefficient, and then a shield / TBM pushing device is installed, namely, a pushing oil cylinder and a jacking oil cylinder are installed.

[0042] (2) the jacking oil cylinder stroke is extended, the heading machine is lifted off the receiving bracket, the pushing oil cylinder stroke is retracted, and the receiving bracket is translated forward.

[0043] (3) the jacking oil cylinder stroke is retracted, the heading machine is placed on the receiving bracket again, a chain hoist is used to lift the supporting cushion block to make it suspended in the air, the pushing oil cylinder stroke is extended, and the heading machine is translated forward. The above steps are cycled until the heading machine is translated through the station.

[0044] Therefore, the heading machine can be pushed in the existing station according to the utility model, and as a result, the problem of long construction period of conventional pushing is solved, the station is prevented from being fully paved with steel plates, frequent welding is avoided, embedded steel rails are not needed, operation time and construction cost are greatly saved, and safety is effectively guaranteed.

[0045] The above only describes preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A shield tunneling / TBM air thruster, characterized in that: It includes a receiving bracket (3) for supporting the tunneling machine (1) and capable of axial stepping relative to the tunneling machine (1) and a lifting mechanism (11) for vertically pushing the tunneling machine (1). The receiving bracket (3) is connected to the tunneling machine (1) through an axial telescopic member (8). The lifting mechanism (11) is detachably mounted on the tunneling machine (1) and located on both sides of the receiving bracket (3).

2. The shield / TBM air thruster according to claim 1, characterized in that: The receiving bracket (3) is located at the bottom of the outer shell of the tunneling machine (1) and in front of the tunnel entrance. The central axis of the receiving bracket (3) is lower than the elevation of the tunnel entrance axis.

3. The shield / TBM air-thrust device according to claim 1 or 2, characterized in that: The receiving bracket (3) is symmetrically arranged on both sides of the bottom of the tunneling machine (1). One end of the axial telescopic component (8) is hinged to the outer shell of the tunneling machine (1), and the other end is hinged to the receiving bracket (3).

4. The shield / TBM air thruster according to claim 3, characterized in that: The receiving bracket (3) includes a frame (31) and a guide rail (32) set on the frame (31). The frame (31) is symmetrically set on both sides of the bottom of the tunneling machine (1). The guide rail (32) is the support point when the receiving bracket (3) supports the tunneling machine (1). The guide rail (32) is provided with friction reducing material.

5. The shield / TBM air-thrust device according to claim 1 or 2, characterized in that: The receiving bracket (3) is located at the bottom of the tunneling machine (1). One end of the axial telescopic component (8) is hinged to the outer shell of the tunneling machine (1), and the other end is hinged to the receiving bracket (3).

6. The shield / TBM air thruster according to claim 5, characterized in that: The receiving bracket (3) includes a frame (31) and guide rails (32) symmetrically arranged on the frame (31). The frame (31) is located at the bottom of the tunneling machine (1), and the guide rails (32) are located on both sides of the bottom of the tunneling machine (1). The guide rails (32) are the support points when the receiving bracket (3) supports the tunneling machine (1). The guide rails (32) are provided with friction-reducing materials.

7. The shield / TBM air-thrust device according to claim 4 or 6, characterized in that: The axial telescopic component (8) is a push cylinder. The outer shell of the tunneling machine (1) is provided with a first ear seat (9) and the receiving bracket (3) is provided with a second ear seat (10). The two ends of the push cylinder are respectively hinged to the first ear seat (9) and the second ear seat (10).

8. The shield / TBM air thruster according to claim 1, characterized in that: The lifting mechanism (11) includes multiple lifting cylinders (5) symmetrically arranged on both sides of the casing of the tunneling machine (1), and the top of the lifting cylinders (5) is connected to the lifting seat (4) arranged on the casing of the tunneling machine (1).

9. The shield / TBM air thruster according to claim 8, characterized in that: A support pad (7) is provided below the lifting cylinder (5); the support pad (7) is connected to the lifting seat (4) by a hand-operated hoist (6) and corresponds to the lifting cylinder (5).

10. The shield / TBM air thruster according to claim 8, characterized in that: A support pad (7) is provided below the lifting cylinder (5), and the support pad (7) is detachably connected to the bottom of the lifting cylinder (5).

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