Non-planar stepping device for turning TBM from uphill to downhill

Abstract

The non-planar stepping device comprises a TBM cutter head (1), a TBM main beam (2) arranged at the rear end of the TBM cutter head (1), a TBM saddle frame (3) arranged on the TBM main beam (2), a TBM rear supporting leg (4) arranged at the rear end of the TBM main beam (2), a stepping mechanism arranged on the lower end face of the TBM cutter head (1), and a TBM saddle frame (3) connected with the rear end of the stepping mechanism. Jacking mechanisms are arranged on the two sides of the TBM cutter head (1). The device has the advantages of being simple in structure, reliable in use and low in cost, it can be guaranteed that when the gradient changes, the stepping direction does not deviate, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a stepping device for a TBM, in particular to a non-planar stepping device for the TBM to go from uphill to downhill. Background Art

[0002] At present, there is no stepping technology for turning the TBM from uphill to downhill when using TBM for tunnel construction. As the TBM steps from uphill to downhill, the stepping base plate and the main machine will continue to move forward in an uphill posture. At this time, the stepping base plate and the TBM main machine will leave the downhill road surface and become suspended in the air, and the distance between them and the downhill road surface becomes larger and larger, until the center of gravity of the entire stepping base plate and the TBM main machine moves forward, and then they begin to slowly move downward and gradually approach the downhill section of the road surface. If no technical measures are taken during this stepping process, the stepping direction is very likely to deviate. Utility Model Content

[0003] The utility model aims to provide a non-planar stepping device for TBM uphill to downhill which can effectively prevent the stepping direction from deviating.

[0004] The purpose of the utility model is achieved through such a technical solution, a non-planar stepping device for TBM uphill to downhill, including a TBM cutter head, a TBM main beam is arranged at the rear end of the TBM cutter head, a TBM saddle is arranged on the TBM main beam, a TBM rear support leg is arranged at the rear end of the TBM main beam, a stepping mechanism is arranged on the lower end surface of the TBM cutter head, and the rear end of the stepping mechanism is connected to the TBM saddle; jacking mechanisms are arranged on both sides of the TBM cutter head.

[0005] Among them, the stepping mechanism includes a stepping base plate, an anti-deflection mechanism is arranged at the center of the front section of the stepping base plate, a push-pull mechanism is arranged horizontally on the upper end surface of the stepping base plate, and a saddle frame support connected to the TBM saddle frame is arranged at the rear end of the stepping base plate, and the stepping base plate and the saddle frame support are connected by a connecting rod.

[0006] In the utility model, the anti-deflection mechanism includes an anti-deflection column vertically arranged at the center of the front section of the stepping base plate and penetrating the stepping base plate, and the lower part of the anti-deflection column is arranged in a guide groove on the ground; an upper limit ring and a lower limit ring are respectively arranged on the anti-deflection column and located on the upper end surface and the lower end surface of the stepping base plate.

[0007] Furthermore, the push-pull mechanism includes a slide plate horizontally arranged on the upper end surface of the stepping bottom plate, and a stepping cylinder connected to the rear end of the slide plate is arranged behind the slide plate.

[0008] Furthermore, the jacking mechanism includes a jacking cylinder with a jacking cylinder base, a jacking cylinder upper seat is arranged on the top of the jacking cylinder, and the jacking cylinder upper seat is supported on the outer wall of the TBM cutter head.

[0009] Due to the adoption of the above technical solution, the utility model has the advantages of simple structure, reliable use and low cost. It can ensure that the stepping direction does not deviate when the slope changes, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings of the present utility model are as follows:

[0011] Figure 1 It is the uphill stepping diagram of the TBM of the utility model;

[0012] Figure 2 It is a stepping diagram of the TBM uphill to downhill transition of the utility model;

[0013] Figure 3 It is the downhill stepping diagram of the TBM of the utility model;

[0014] Figure 4 This is a diagram of the stepping mechanism and TBM host of the utility model;

[0015] Figure 5 This is a diagram of the saddle frame and the saddle frame support of the utility model;

[0016] Figure 6 It is a top view of the stepping mechanism of the utility model. DETAILED DESCRIPTION

[0017] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these implementation modes, and any improvement or substitution based on the basic spirit of the present embodiment still falls within the scope of protection required by the claims of the present invention.

[0018] Example 1: Figure 1 , 2 As shown in Figures , 3, 4, 5 and 6, a non-planar stepping device for TBM uphill to downhill conversion comprises a TBM cutterhead 1, a TBM main beam 2 is arranged at the rear end of the TBM cutterhead 1, a TBM saddle frame 3 is arranged on the TBM main beam 2, a TBM rear support leg 4 is arranged at the rear end of the TBM main beam 2, a stepping mechanism is arranged on the lower end surface of the TBM cutterhead 1, and the rear end of the stepping mechanism is connected to the TBM saddle frame 3; jacking mechanisms are arranged on both sides of the TBM cutterhead 1.

[0019] Among them, the stepping mechanism includes a stepping base plate 5, an anti-deflection mechanism is arranged at the center of the front section of the stepping base plate 5, a push-pull mechanism is arranged horizontally on the upper end surface of the stepping base plate 5, and a saddle frame support 6 connected to the TBM saddle frame 3 is arranged at the rear end of the stepping base plate 5, and the stepping base plate 5 and the saddle frame support 6 are connected by a connecting rod 16.

[0020] Further description, the anti-deflection mechanism includes an anti-deflection column 7 which is vertically arranged at the center of the front section of the stepping base plate 5 and penetrates the stepping base plate 5, and the lower part of the anti-deflection column 7 is arranged in a guide groove 8 on the ground; an upper limit ring 9 and a lower limit ring 10 are respectively arranged on the anti-deflection column 7 and located on the upper end surface and the lower end surface of the stepping base plate 5.

[0021] The push-pull mechanism includes a slide plate 11 horizontally arranged on the upper end surface of the stepping base plate 5 , and a stepping cylinder 12 connected to the rear end of the slide plate 11 is arranged behind the slide plate 11 .

[0022] Furthermore, the jacking mechanism includes a jacking cylinder 14 with a jacking cylinder base 13 , and a jacking cylinder upper seat 15 is arranged on the top of the jacking cylinder 14 , and the jacking cylinder upper seat 15 is supported on the outer wall of the TBM cutter head 1 .

[0023] The utility model works as follows: start the stepper pump station - the TBM rear outrigger is lifted off the ground - the stepper cylinder is extended - the whole machine starts stepping - the stepper cylinder is extended - the TBM rear outrigger is lowered - the TBM rear outrigger steps on the ground - the jacking cylinder is extended - the main machine is lifted - the stepper propulsion cylinder is retracted - the stepper propulsion cylinder is retracted, the stepper base plate and the TBM saddle frame support move forward - the jacking cylinder is retracted - the main machine falls - the first cycle of stepping is completed - after stepping to the uphill to downhill position - the upper limit circle and the lower limit circle on the anti-deflection column are adjusted upward - the anti-deflection column falls - continue stepping - the whole machine completely passes the uphill position, the head drops - the upper limit circle and the upper limit circle are adjusted downward - the anti-deflection is raised - continue stepping - the uphill to downhill non-planar stepping is completed.

Claims

1. A non-planar stepping device for a TBM to go uphill and downhill, comprising a TBM cutterhead (1), a TBM main beam (2) arranged at the rear end of the TBM cutterhead (1), a TBM saddle frame (3) arranged on the TBM main beam (2), and a TBM rear support leg (4) arranged at the rear end of the TBM main beam (2), wherein: A stepping mechanism is arranged on the lower end surface of the TBM cutter head (1), and the rear end of the stepping mechanism is connected to the TBM saddle frame (3); and lifting mechanisms are arranged on both sides of the TBM cutter head (1).

2. The non-planar stepping device for TBM uphill to downhill according to claim 1, characterized in that: The stepping mechanism comprises a stepping base plate (5), an anti-deflection mechanism is arranged at the center of the front section of the stepping base plate (5), a push-pull mechanism is arranged horizontally on the upper end surface of the stepping base plate (5), and a saddle frame support (6) connected to the TBM saddle frame (3) is arranged at the rear end of the stepping base plate (5), and the stepping base plate (5) and the saddle frame support (6) are connected via a connecting rod (16).

3. The non-planar stepping device for TBM uphill to downhill according to claim 2, characterized in that: The anti-deflection mechanism comprises an anti-deflection column (7) vertically arranged at the center of the front section of the stepping base plate (5) and penetrating the stepping base plate (5); the lower part of the anti-deflection column (7) is arranged in a guide groove (8) on the ground; an upper limit ring (9) and a lower limit ring (10) are respectively arranged on the anti-deflection column (7) and located on the upper end surface and the lower end surface of the stepping base plate (5).

4. The non-planar stepping device for TBM uphill to downhill according to claim 3, characterized in that: The push-pull mechanism comprises a slide plate (11) horizontally arranged on the upper end surface of a stepping bottom plate (5), and a stepping oil cylinder (12) connected to the rear end of the slide plate (11) is arranged behind the slide plate (11).

5. The non-planar stepping device for TBM uphill to downhill according to claim 4, characterized in that: The jacking mechanism comprises a jacking cylinder (14) with a jacking cylinder base (13), a jacking cylinder upper seat (15) is arranged on the top of the jacking cylinder (14), and the jacking cylinder upper seat (15) is supported on the outer wall of the TBM cutter head (1).

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