CN113513344A - Segment hoisting mechanism and segment hoisting method - Google Patents

Abstract

The invention provides a pipe piece hoisting mechanism and a method for hoisting pipe pieces, wherein the method comprises the following steps: when the tunneling equipment pushes a ring, a segment to be installed is installed firstly to form a new tunnel, and the ring-shaped connecting bolt on the inner side of the segment to be installed is kept at the top of the new tunnel; then the pulley seat at the tail end is detached and installed at the top of a new tunnel, and the hanging beam is pushed forward to move forward. The method solves the problem that the small-caliber shield can not hoist the duct piece; compared with the electric hoist which has the same research and development hoisting capacity and smaller whole body, the method is economical and practical and has low cost; and, this method can provide longer transport distance through changing the length of hanging beam or increasing the pulley block quantity, and the flexibility is very high.

Description

Segment hoisting mechanism and segment hoisting method

Technical Field

The invention relates to the technical field of tunnel excavation, in particular to a segment hoisting mechanism and a segment hoisting method.

Background

The existing segment hoisting system is generally a beam on a shield tunneling machine trolley, and a movable electric hoist is additionally arranged below the beam. The electric hoist carries the duct piece, and the trolley moves forward along with the shield tunneling machine (figure 4).

The existing hoisting method is simple, convenient and quick, but has the same problems. With the increase of the demand of the small-caliber tunnel, the volume of the electric hoist is not changed (the height of the electric hoist is not changed). When the pipe piece quantity of once only transporting according to traditional heavy-calibre tunnel conveys the pipe piece in to small-bore tunnel (the diameter is less than 2600 mm), the electric block that piles up the pipe piece and hoist on the platform truck forms and interferes. The number of the duct pieces which are transported at every time can be reduced to reduce the stacking height of the duct pieces, so that the electric hoist can be conveniently hoisted. Thus greatly reducing the construction efficiency.

Therefore, in order to overcome the defects of the prior art, a tube piece hoisting mechanism and a tube piece hoisting method need to be designed to solve the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a tube piece hoisting mechanism and a tube piece hoisting method.

In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: a tube sheet hoisting mechanism, comprising:

the pulley seats are hung at the top of the tunnel through annular connecting bolts;

the lifting beam is hung below the pulley seat and is connected with the pulley seat in a sliding manner;

the movable electric hoist is hung below the hanging beam and is connected with the hanging beam in a sliding mode, and the duct piece to be installed is hung below the movable electric hoist.

The preferable technical scheme is as follows: the tunnel is formed by assembling a plurality of installed pipe pieces, and the annular connecting bolts are arranged on the inner sides of the installed pipe pieces and located at the tops of the installed pipe pieces.

The preferable technical scheme is as follows: when the tunnel is located on the straight line section, the hanging beam is made of straight I-shaped steel; when the tunnel is located at the turning section, the hanging beam is made of arc-shaped I-shaped steel.

The preferable technical scheme is as follows: the top of the pulley seat is provided with a through hole which is matched with the circumferential connecting bolt for connection.

The preferable technical scheme is as follows: the pulley seat is internally provided with two pulleys which are symmetrically arranged at intervals.

A method for hoisting a duct piece comprises the following steps:

a. a plurality of pulley seats are hung at the top of the tunnel at the tail end of the tunneling equipment through annular connecting bolts;

b. a hanging beam is hung below the pulley seat and is connected with the pulley seat in a sliding manner;

c. a movable electric hoist is hung below the hanging beam and is connected with the hanging beam in a sliding manner;

d. a duct piece to be installed is hung below the movable electric hoist;

e. taking down the segment to be assembled after the tunneling equipment pushes one ring each time, assembling to form a new tunnel, and keeping the ring-shaped connecting bolt on the inner side of the segment to be assembled at the top of the new tunnel;

f. the pulley seat at the tail end is detached and then is installed at the top of the formed new tunnel through the annular connecting bolt;

g. and pushing the hanging beam forward, and advancing the hanging beam forward.

Due to the application of the technical scheme, the invention has the beneficial effects that:

1. the problem that the small-caliber shield can not hoist the duct piece is solved;

2. compared with the electric hoist which has the same research and development hoisting capacity and smaller whole body, the method is economical and practical and has low cost;

3. the method can provide longer transportation distance by changing the length of the hanging beam or increasing the number of the pulley seats, and has high flexibility.

Drawings

FIG. 1 is a schematic view of the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic cross-sectional view taken at a in fig. 1.

Fig. 4 is a schematic diagram of the conventional scheme.

In the above drawings, 1, a tunneling device; 2. a tunnel; 3. a circumferential connecting bolt; 4. a pulley seat; 41. a pulley; 5. a hanging beam; 6. provided is a movable electric hoist.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1-4. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is usually placed in when used, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

the invention provides a method for hoisting a duct piece, which comprises the following steps:

a. hanging a plurality of pulley seats 4 on the top of a tunnel 2 at the tail end of the tunneling device 1 through annular connecting bolts 3 (the tunnel 2 is formed by assembling a plurality of installed pipe pieces, and the annular connecting bolts 3 on the inner sides of the installed pipe pieces are all positioned on the top of the tunnel 2);

b. a hanging beam 5 is hung below the pulley seat 4, and the hanging beam 5 is connected with the pulley seat 4 in a sliding way (the hanging beam 5 adopts an I-shaped beam, the upper side of which is arranged in the pulley seat 4 and is connected with two pulleys 41 in the pulley seat 4 in a sliding way);

c. a movable electric hoist 6 is hung below the hanging beam 5, and the movable electric hoist 6 is connected with the lower side of the hanging beam 5 in a sliding way;

d. a duct piece to be installed is hung below the movable electric hoist 6;

e. taking down the lifted segment to be installed each time the tunneling equipment 1 advances one ring, assembling to form a new tunnel 2, and keeping the ring-shaped connecting bolt 3 of the segment to be installed at the top of the new tunnel 2;

f. the pulley seat 4 at the tail end is detached and then is arranged at the top of the formed new tunnel 2 through the annular connecting bolt 3;

g. the lifting beam 5 is pushed forward, and advances in this way.

Based on the above method for hoisting a segment, as shown in fig. 1-3, the present application further provides a segment hoisting mechanism, comprising:

the pulley seats 4 are hung at the top of the tunnel 2 through annular connecting bolts 3;

the hanging beam 5 is hung below the pulley seat 4 and is connected with the pulley seat 4 in a sliding manner;

and the movable electric hoist 6 is hung below the hanging beam 5 and is in sliding connection with the hanging beam 5, and the duct piece to be installed is hung below the movable electric hoist 6.

It should be noted that when the tunnel 2 is located in the straight line segment, the hanging beam 5 is made of straight i-shaped steel; when the tunnel 2 is positioned at the turning section, the hanging beam 5 adopts arc-shaped I-shaped steel so as to be convenient for propulsion.

Therefore, the invention has the following advantages:

1. the scheme has a small structure, and solves the problem that the small-caliber shield can not hoist the duct piece;

2. compared with an electric hoist which has the same research and development hoisting capacity and is smaller in whole, the duct piece hoisting mechanism provided by the application is economical and practical and has low cost;

3. the segment hoisting method provided by the application can provide longer transportation distance by changing the length of the hoisting beam or increasing the number of the pulley seats, and is very high in flexibility.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (6)

1. The utility model provides a section of jurisdiction hoisting machine constructs which characterized in that includes:

the pulley seats are hung at the top of the tunnel through annular connecting bolts;

the lifting beam is hung below the pulley seat and is connected with the pulley seat in a sliding manner;

the movable electric hoist is hung below the hanging beam and is connected with the hanging beam in a sliding mode, and the duct piece to be installed is hung below the movable electric hoist.

2. The tube sheet hoisting mechanism according to claim 1, wherein: the tunnel is formed by assembling a plurality of installed pipe pieces, and the annular connecting bolts are arranged on the inner sides of the installed pipe pieces and located at the tops of the installed pipe pieces.

3. The tube sheet hoisting mechanism according to claim 1, wherein: when the tunnel is located on the straight line section, the hanging beam is made of straight I-shaped steel; when the tunnel is located at the turning section, the hanging beam is made of arc-shaped I-shaped steel.

4. The tube sheet hoisting mechanism according to claim 1, wherein: the top of the pulley seat is provided with a through hole which is matched with the circumferential connecting bolt for connection.

5. The tube sheet hoisting mechanism according to claim 1, wherein: the pulley seat is internally provided with two pulleys which are symmetrically arranged at intervals.

6. A method of hoisting a segment using the segment hoisting mechanism of claim 1, the method comprising:

a. a plurality of pulley seats are hung at the top of the tunnel at the tail end of the tunneling equipment through annular connecting bolts;

b. a hanging beam is hung below the pulley seat and is connected with the pulley seat in a sliding manner;

c. a movable electric hoist is hung below the hanging beam and is connected with the hanging beam in a sliding manner;

d. a duct piece to be installed is hung below the movable electric hoist;

e. taking down the segment to be assembled after the tunneling equipment pushes one ring each time, assembling to form a new tunnel, and keeping the ring-shaped connecting bolt on the inner side of the segment to be assembled at the top of the new tunnel;

f. the pulley seat at the tail end is detached and then is installed at the top of the formed new tunnel through the annular connecting bolt;

g. and pushing the hanging beam forward, and advancing the hanging beam forward.

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