CN219430406U

CN219430406U - Step-by-step mechanism supports step frame

Info

Publication number: CN219430406U
Application number: CN202320626760.8U
Authority: CN
Inventors: 李雷; 李海; 孟庆廷; 邵宏魁; 宫立伟
Original assignee: Sinohydro Bureau 6 Co Ltd
Current assignee: Sinohydro Bureau 6 Co Ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-07-28
Anticipated expiration: 2033-03-28

Abstract

The utility model discloses a stepping mechanism supporting stepping frame, which relates to the technical field of full-section tunnel tunneling and comprises a linear track, wherein an arc-shaped track is arranged on one side of the linear track, the linear track and the arc-shaped track are arranged in double rows, connecting plates are arranged at the lower ends of the linear track and the arc-shaped track, a concrete matrix is arranged below the linear track and the arc-shaped track, a cage-shaped frame is embedded in the concrete matrix, a mounting plate is arranged at the position, corresponding to the connecting plates, of the upper surface of the concrete matrix, a fixing bolt is connected between the connecting plate and the mounting plate in a penetrating manner through threads, connecting holes are formed at the upper ends of the side walls of the linear track and the arc-shaped track in a penetrating manner, distance rods are connected between the two rows of the linear track and the arc-shaped track, the stress area between the concrete surface and the track is increased, the local stress pressure is reduced, and the cracking and damage of a concrete supporting surface is avoided.

Description

Step-by-step mechanism supports step frame

Technical Field

The utility model relates to the technical field of full-face tunnel tunneling, in particular to a stepping mechanism supporting stepping frame.

Background

Full face Tunnel Boring Machines (TBMs) are commonly used for tunneling and development of rock formations or hard geology, the TBM including a shield body for tunneling and various shield assemblies in the shield body. The TBM needs to be moved to the rock stratum face to be tunneled before tunnelling the tunnel, so that tunnelling operation is carried out. Because the TBM has larger size and weight, and cannot adopt a traction movement mode of a crane or a trailer in a tunnel with limited construction area, the TBM generally needs to adopt a stepping device to move and step on a track paved in the tunnel so as to reach a designated tunneling position. At present, a support rail of the TBM is usually fixed on a concrete support structure through bolts, a stress surface between a concrete surface and the rail is small, and local stress pressure is too high, so that the concrete support surface is broken and damaged.

Disclosure of Invention

The utility model aims to provide a stepping mechanism supporting stepping frame, which solves the problems that the supporting rail of the current TBM is usually fixed on a concrete supporting structure through bolts, the stress surface between the concrete surface and the rail is small, and the local stress pressure is too large, so that the concrete supporting surface is broken and damaged.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a step-by-step mechanism supports step frame, includes linear track, linear track's one side is equipped with the arc track, linear track with the arc track is double setting, linear track with the orbital lower extreme of arc all is equipped with the connecting plate, linear track with the orbital below of arc is equipped with the concrete matrix, the inside pre-buried cage frame that has of concrete matrix, the upper surface of concrete matrix with the position that the connecting plate corresponds is equipped with the mounting panel, the connecting plate with run through there is fixing bolt through threaded connection between the mounting panel, linear track with arc orbital lateral wall upper end runs through and is equipped with the connecting hole, two rows linear track with be connected with the distance pole between the arc track.

Preferably, two ends of the distance rod are propped against the side walls of the linear track and the arc track and the upper surface of the connecting plate, two ends of the distance rod penetrate through the linear track and the arc track and are connected with distance bolts through threads, and the distance rod is arranged between the two fixing bolts.

Preferably, the plurality of straight-line tracks sequentially support on the adjacent straight-line tracks, one end of the arc-shaped track supports on one end of the straight-line track, the plurality of arc-shaped tracks sequentially support on the adjacent arc-shaped track, and the length of the arc-shaped track is smaller than that of the straight-line track.

Preferably, a reinforcing angle is arranged between the upper surface of the connecting plate and the side walls of the linear track and the arc track, and the reinforcing angle is arranged between the two fixing bolts.

Preferably, the lower end of the fixing bolt is embedded into the concrete matrix, and the lower end of the fixing bolt is fixedly connected with the cage frame through welding.

Compared with the prior art, the utility model has the beneficial effects that: at present, a TBM (Tunnel boring machine) track supporting and fixing mode that a supporting track is fixed to a concrete supporting structure through bolts is adopted, a cage type frame and fixing bolts are embedded in concrete, a mounting plate is fixedly arranged on the upper surface of the concrete, a connecting plate is fixedly connected to the mounting plate through the fixing bolts, the stress area between a concrete surface and the track is increased, the local stress pressure is reduced, and the concrete supporting surface is prevented from being broken and damaged.

Drawings

FIG. 1 is an isometric view of a body structure of the present utility model;

FIG. 2 is a schematic front view of the main structure of the present utility model;

FIG. 3 is a schematic top view of the main structure of the present utility model;

FIG. 4 is a right side cross-sectional view of the body structure of the present utility model;

fig. 5 is an isometric view of a linear track structure of the present utility model.

In the figure: 1-straight line track, 2-arc track, 3-connecting plate, 4-concrete matrix, 5-cage frame, 6-mounting plate, 7-fixing bolt, 8-connecting hole, 9-distance pole, 10-distance bolt, 11-reinforcing angle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the utility model provides a stepping mechanism supporting stepping frame, which comprises a linear rail 1, wherein an arc rail 2 is arranged on one side of the linear rail 1, the linear rail 1 and the arc rail 2 are arranged in double rows, connecting plates 3 are arranged at the lower ends of the linear rail 1 and the arc rail 2, a concrete matrix 4 is arranged below the linear rail 1 and the arc rail 2, a cage frame 5 is embedded in the concrete matrix 4, a mounting plate 6 is arranged at the position, corresponding to the connecting plates 3, of the upper surface of the concrete matrix 4, a fixing bolt 7 is connected between the connecting plates 3 and the mounting plate 6 in a penetrating manner through threads, connecting holes 8 are arranged at the upper ends of the side walls of the linear rail 1 and the arc rail 2 in a penetrating manner, and distance rods 9 are connected between the two rows of linear rail 1 and the arc rail 2.

When the TBM device is used, firstly, the concrete matrix 4 is poured at the position where the linear rail 1 and the arc-shaped rail 2 are required to be erected, the cage-type frame 5, the mounting plate 6 and the fixing bolts 7 are embedded in the concrete matrix 4, the fixing bolts 7 are fixedly connected with the cage-type frame 5 through welding, the mounting plate 6 penetrates through the fixing bolts 7 and is fixedly connected with the fixing bolts 7 through welding, the mounting plate 6 is guaranteed to be arranged on the upper surface of the concrete matrix 4, the upper surface of the mounting plate 6 is flush with the upper surface of the concrete matrix 4, then the connecting plate 3 is fixedly arranged on the mounting plate 6 of the concrete matrix 4 carrying the linear rail 1 and the arc-shaped rail 2 through the fixing bolts 7, distance rods 9 are arranged between the two rows of the linear rail 1 and the arc-shaped rail 2, the distance between the linear rail 1 and the arc-shaped rail 2 is guaranteed to be constant, connecting holes 8 are formed in the linear rail 1 and the arc-shaped rail 2, TBM stepping mechanisms at the upper ends are connected through the connecting holes 8, and TBM stepping mechanisms at the upper ends of the linear rail 1 and the arc-shaped rail 2 are arranged, and pitching adjustment is carried out under the guidance of the arc-shaped rail 2.

The two ends of the distance rod 9 are propped against the side walls of the linear track 1 and the arc track 2 and the upper surface of the connecting plate 3, the two ends of the distance rod 9 penetrate through the linear track 1 and the arc track 2 and are connected with distance bolts 10 through threads, the distance rod 9 is arranged between the two fixing bolts 7, the distance rod 9 is arranged between the linear track 1 and the arc track 2 through the distance bolts 10, and certain distances between the linear track 1 and the arc track 2 are ensured.

A plurality of straight line track 1 supports in proper order on adjacent straight line track 1, the one end of arc track 2 supports straight line track 1's one end, a plurality of arc track 2 supports in proper order on adjacent arc track 2, the length of arc track 2 is less than straight line track 1 supports straight line track 1 each other between, straight line track 1 and arc track 2 and between the arc track 2, guarantees that gaps between straight line track 1, between straight line track 1 and the arc track 2 and between the arc track 2 meet the demands.

The upper surface of connecting plate 3 with be equipped with between the lateral wall of straight line track 1 and arc track 2 strengthen angle 11, strengthen angle 11 set up two between the fixing bolt 7, through set up between connecting plate 3 and straight line track 1 and arc track 2 strengthen angle 11, promote joint strength between connecting plate 3 and straight line track 1 and the arc track 2.

The lower extreme of fixing bolt 7 is pre-buried to the inside of concrete matrix 4, the lower extreme of fixing bolt 7 pass through the welding with cage frame 5 fixed connection, through setting up fixing bolt 7, mounting panel 6 and cage frame 5 in the inside of concrete matrix 4 through pre-buried mode, promote the bulk strength of concrete matrix 4.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A step-by-step mechanism supports step frame, its characterized in that: including sharp track (1), one side of sharp track (1) is equipped with arc track (2), sharp track (1) with arc track (2) are double setting, sharp track (1) with arc track (2)'s lower extreme all is equipped with connecting plate (3), sharp track (1) with arc track (2)'s below is equipped with concrete base body (4), the inside of concrete base body (4) is pre-buried has cage frame (5), the upper surface of concrete base body (4) with the position that connecting plate (3) corresponds is equipped with mounting panel (6), run through between connecting plate (3) with through threaded connection has fixing bolt (7), sharp track (1) with arc track (2)'s lateral wall upper end runs through and is equipped with connecting hole (8), two rows be connected with distance pole (9) between sharp track (1) with arc track (2).

2. A stepper mechanism support stepper frame as defined in claim 1, wherein: the two ends of the distance rod (9) are propped against the side walls of the linear track (1) and the arc track (2) and the upper surface of the connecting plate (3), the two ends of the distance rod (9) penetrate through the linear track (1) and the arc track (2) and are connected with distance bolts (10) through threads, and the distance rod (9) is arranged between the two fixing bolts (7).

3. A stepper mechanism support stepper frame as defined in claim 1, wherein: a plurality of straight line track (1) support in proper order on adjacent straight line track (1), the one end of arc track (2) support in the one end of straight line track (1), a plurality of arc track (2) support in proper order on adjacent arc track (2), the length of arc track (2) is less than straight line track (1).

4. A stepper mechanism support stepper frame as defined in claim 1, wherein: a reinforcing angle (11) is arranged between the upper surface of the connecting plate (3) and the side walls of the linear track (1) and the arc track (2), and the reinforcing angle (11) is arranged between the two fixing bolts (7).

5. A stepper mechanism support stepper frame as defined in claim 1, wherein: the lower end of the fixing bolt (7) is embedded into the concrete matrix (4), and the lower end of the fixing bolt (7) is fixedly connected with the cage frame (5) through welding.