JPH0144639Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a conveying device for conveying segments into a borehole as a shield tunneling machine excavates. The present invention relates to a segment transport device that easily transports segments.

[Technical background of the invention and its problems] Tunnel excavation using the shield method involves digging with a shield excavator and assembling segments one after another inside the machine to construct a tunnel.

Conventionally, a hoist-type segment transport device has been proposed as a means for transporting segments as the shield tunneling machine excavates, in order to maintain the turning path and speed up the turning process. This conventional example will be explained based on the attached drawings.

As shown in FIG. 1, the shield tunneling machine 5 includes a shield frame 20 formed in a cylindrical shape,
A cutter 35 is provided at an appropriate distance from the tip of the shield frame 20 to block the tip thereof, and is rotatably provided thereon to cut the earth and sand.
Katsuta chamber 21 for retaining earth and sand, and Katsuta chamber 21
An erector part 2 is provided at the rear of the erector part 2 for conveying the segment 1 in the circumferential direction and installing it in the borehole.
, a conveying device (not shown) whose one end is inserted into the rear wall of the cutter chamber 21 to convey the excavated earth and sand, and a transmission gear provided on the shaft portion 22 of the cutter 35 to obtain driving force. 23 and the drive device 24 that meshes with the segment 1 to provide a transmission force.
It consists of a shield jack 3 for advancing the.

On the other hand, the segment conveyance device 14 passes through the inner diameter space of the erector section 2 along the inside of the tunnel 4 from the rear in the excavation direction, and is pivotally supported by a beam support structure 36 provided in the shield frame 20. a hoist beam 6, a trolley 7 that can freely run along the hoist beam 6, and the trolley 7.
A hoisting machine 9 is provided on the hoisting machine 9, and a wire rope 1 is fed out from the hoisting machine 9 and hangs down in the direction of gravity via the trolley 7 to suspend the segment 1.
2, connected to the rear end of the hoist beam 6;
The hoist beam support cart 15 is composed of a hoist beam support cart 15 that supports and is movable within the tunnel 4, and a segment cart 16 that transports the segment 1 within the tunnel 4.
It is configured to run on each rail 26 provided on the sleeper 25.

Therefore, the shield excavator 5 excavates a tunnel hole using the cutter 35 provided at the front part, and the segment 1 is stretched along the inner peripheral surface of the tunnel hole as a protection material for the tunnel hole. After the segment 1 is carried into the machine by the segment transport device 14, it is delivered to the elevating section 2a of the erector section 2, and
The segment 1 is rotatably conveyed to an appropriate position by the rotation in the circumferential direction of the rotary column part 2b that supports the elevating part 2a in a vertically movable manner and the elevating and descending movement of the elevating part 2a, and the segment 1 is assembled to form the tunnel 4. . On the other hand, the excavated earth and sand is carried out from the cutter chamber 21 to the outside by an earth and sand conveying device (not shown).

However, the above segment conveying device 14
The wire rope 12 unwound from the hoisting machine 9 provided on the trolley 7 is always suspended in the direction of gravity to convey the segment 1, so when digging up an inclined shaft, the trolley 7 is moved to the limit position of the erector section 2. Even when the segment 1 was pulled closer, the segment 1 could not be carried into an appropriate position in the erector section 2. This is because the wire rope suspending the segment 1 hangs down constantly in the direction of gravity, and on the other hand, when the shield tunneling machine 5 is in an uphill tunnel excavation, the more the inclination angle increases, the more the wire rope hangs down in the direction of gravity. The segment 1 was separated, making it difficult to carry the erector section 2 to an appropriate position.

Conventionally, in order to deal with this, measures such as installing a winch or the like in the shield excavator 5 to pull the segment 1 or push it up from the rear have been taken, but this method has problems in terms of work safety and speed. It wasn't appropriate.

[Purpose of the invention] The present invention was devised to solve the above-mentioned problems, and the purpose of the present invention is to provide a segment transport system that easily transports the segments to the erector section of the shield excavator when the shield excavator excavates an ascending inclined shaft. The purpose is to provide equipment.

[Summary of the invention] In order to achieve the above object, the present invention provides a shield excavator that has an erector part that can assemble segments that form a tunnel construction and rotate them to a predetermined position, and that constructs a tunnel by sequentially attaching segments as the tunnel is being excavated. , a hoist beam extending from the rear in the excavation direction of the shield tunneling machine along the inside of the tunnel to the erector section, a trolley supported so as to be freely movable along the hoist beam, and a trolley that is elevated in the direction of gravity. A hoist boom that is freely pivoted, a hoisting machine provided on the trolley, and a hoisting machine that extends from the hoisting machine to the tip of the hoist boom via a pulley and hangs down to suspend the segment. A wire rope having a hook (or hanging fitting), and a boom lifting device that is provided on the wire rope and engages with the hoist boom each time the wire rope is hoisted, and causes the hoist boom to move upward and downward according to the hoisting of the wire rope. When hoisting a segment, the hook (or lifting fitting) and boom lifting member are lowered by lowering the wire rope, and the hoist boom rotates under its own weight, and the boom attached to the trolley body lowers. It touches the descending stopper and stops descending. When the shield excavator excavates an upwardly inclined shaft, the hoist boom is lowered and extended almost horizontally, and the wire rope hanging from the pulley at the end of the hoist boom is placed at the furthest distance from the trolley, thereby allowing it to be moved to the appropriate position on the erector section. By engaging the boom lifting member provided on the wire rope with the hoist boom, the hoist boom is rotated upward and the segment carriages etc. in the tunnel are moved. Clearance and working space to pass through is maintained, and locking means are provided for fixing in that position as required to facilitate transport of the segment during uphill tunnel excavation.

[Embodiment of the invention] A preferred embodiment of the invention will be described below based on the accompanying drawings.

As shown in FIG. 1, the shield tunneling machine 5 includes a shield frame 2 formed in a cylindrical shape, for example.
0, a cutter 35 that closes the front part and is rotatably provided to excavate earth and sand, a cutter chamber 21 that is formed at an appropriate distance from the tip of the shield frame 20 and retains earth and sand, an erector section 2 provided at the rear of the chamber 21 for conveying the segment 1 in the circumferential direction and for attaching it to the borehole; and a transmission gear 23 provided on the shaft section 22 of the cutter 35 for driving the same. , a drive device 24 that meshes with the drive device 24 to transmit driving force, a shield jack 3 for advancing the shield excavator 5, a segment transport device 14 that transports the segment 1 to the erector section 2, and a subsequent equipment cart (see Fig. (not shown).

As shown in FIG. 2, a cross section I extends along the inside of the tunnel 4 from the rear in the excavation direction, passes through the inner diameter space of the erector section 2, and is pivoted to a beam support structure 36 provided within the shield frame 20. A trolley 7 is installed on the hoist beam 6 so that it can run freely via wheels 17, and a hoist boom 8 is pivotally supported at an appropriate position at the rear of the trolley 7. It has been extended as appropriate. Further, a pulley 10 is rotatably provided at the tip of the hoist beam 8. A hoisting machine 9 for hoisting the segments is provided at the rear of the trolley 7, and a wire rope 12 let out from the hoisting machine 9 is suspended in the direction of gravity via a pulley 10 of the hoist boom 8. A hook or hanging fitting 11 for lifting the segment 1 is provided at the tip of the wire rope 12, and further,
A collar-shaped boom lifting member 13 is integrally provided at the upper end of this hook, and each time it is pulled up, it engages with the tip of the hoist boom 8 having a pulley 10 to raise and lower the boom 8. It is configured. On the other hand, the trolley 7 has a first stopper 26 located below the tip of the trolley and a second stopper 27 located at an appropriate position above the trolley 7 in order to restrict the rotation range of the boom 8. It is provided on the boom track, and the lower and upper limits of the boom 8 are regulated. In addition, the trolley 7 has an appropriate number of locking holes 3 on the rotation locus of the hoist boom 8.
2 is provided in the hoist boom 8, and a locking hole 33 that engages with the locking hole 32 is provided in the hoist boom 8, and a pin 34 is provided in the locking holes 32 and 33 so as to be freely inserted, so that the position of the hoist boom 8 can be adjusted step by step. It is configured so that it can be selectively fixed. Shackles 28 and 29 are provided above the trolley 7 at its leading and rear ends, and a traction wire 30 and a restraining wire 31 are provided, respectively, and their ends are connected to an existing winch (not shown). installed.

The operation of the present invention will be specifically explained below.

As shown in the figure, the shield excavator 5 excavates while excavating with a cutter 35 formed at the front part, and in order to cover and shield the inner circumferential surface of the excavated hole, the shield excavator 5 uses an erector conveyor 14 to cover and shield the excavated inner peripheral surface. The segment 1 is conveyed to an appropriate position in the section 2.

Next, the segment conveyance device 14 will be specifically explained.

The segment conveyance device 14 includes a trolley 7 that can run freely via wheels 17 along a hoist beam 6 that extends into the tunnel 4 from the rear to the erector section 2 and is pivotally supported by the shield frame 20. The rear portion of the hoist beam 6 is connected to and supported by a support cart 15, and can move within the tunnel 4 in accordance with the excavation of the shield excavator 5. In addition, a traction wire 30 and a restraining wire 31 are connected to the shafts 28 and 29 provided above the trolley 7, respectively, and these are installed in an existing winch, for example, when the shield excavator 5 excavates horizontally and upwardly inclined shafts. In this case, the trolley 7 is pulled in the excavation direction by the pulling wire 30, and when the shield tunneling machine 5 excavates the downward slope, the trolley 7, which is self-propelled by the weight of the trolley 7 and the segment 1, is held back by the restraining wire 31. , segment 1
can be transported to the erector section 2.

On the other hand, the wire rope 12 let out from the hoist 9 provided at the rear of the trolley 7 is suspended in the direction of gravity via the pulley 10 of the hoist boom 8.
The segment 1 can be lifted up via a hook 11 provided at its tip. Unless the hoist boom 8 is supported by the boom lifting member 13, the hoist boom 8 is attached to a stopper 2 provided below the trolley 7.
It rotates downward due to its own weight until it touches 6 and stops. Therefore, when the shield excavation machine 5 ascends and excavates a diagonal shaft, the boom 8 rotates downward, so that the boom becomes almost horizontal and is extended to its maximum extent, making it possible to carry the segment 1 into a predetermined position in the erector section 2. . In addition, the boom lifting member 13 integrated into the upper end of the hook 11 is
By engaging the boom 8, the boom 8
The height of the segment trolley 16 moving in the tunnel 4 is maintained, and the wire rope 1
If 2 is not used, boom lifting member 1
3 can be engaged with the boom 8 to hold the boom 8 at the upper limit position. The first and second stoppers provided at appropriate positions on the trolley 7 collide with the first and second stoppers when the hoist boom 8 rotates, thereby regulating the upper and lower limits of each rotation. The boom 8 can be fixed to the trolley 7 at any position by inserting the pin 34 into the locking hole 32 provided in the hoist boom 8 and the locking hole 33 provided in the hoist boom 8. It is also possible to add an adjustable stopper (not shown) to the first stopper 26, and in this way the lower limit position of the hoist boom 8 can be adjusted in accordance with the slope angle.

[Effects of the invention] As described above, the present invention provides the following excellent effects.

(1) A trolley is installed on the hoist beam so that it can run freely.
A hoist boom is rotatably provided on this trolley, and a hoist is further provided on the trolley, and the wire fed out from the hoist is suspended in the direction of gravity via a pulley provided at the tip of the hoist boom.
Since the wire rope is equipped with a boom lifting member and a segment lifting hook,
Even when the shield tunneling machine ascends and excavates an inclined shaft, the segment can be easily and safely carried into the erector section by rotating the hoist boom.

(2) Since the wire rope is equipped with a member for lifting the boom, the hoist boom can be raised and raised by hoisting the empty hook without requiring any other power, and the hoist boom can be held above the trolley. Therefore, it is possible to secure a space (separation) for the segment carriages to pass inside the tunnel.

(3) Shackles are provided at appropriate positions on both ends of the trolley, and the shackle is equipped with a traction wire and a restraining wire, so the trolley can be pulled or restrained when excavating up and down sloped shafts, improving work safety. It is possible to speed up the process.

(4) Providing an extremely compact conveyance device on the hoist beam improves economic efficiency and workability.

[Brief explanation of the drawing]

Fig. 1 is a schematic side sectional view of a state in which a shield tunneling machine excavates an upward slope from a horizontal position; Fig. 2 is a schematic side sectional view of a state in which the segment conveyance device of the present invention is installed and excavates an upward slope; Fig. 3; is a detailed view of the main part of FIG. 2. In the figure, 1 is a segment, 2 is an erector part, 3 is a shield jack, 4 is a tunnel, 5 is a shield excavator, 6 is a hoist beam, 7 is a trolley, 8 is a hoist boom, 9 is a hoisting machine, and 10 is a pulley, 11
12 is a wire rope, and 13 is a boom lifting member.

Claims (1)

[Scope of utility model registration request] In a shield tunneling machine, which has an erector part that can rotate the segments that form the tunnel construction to a predetermined assembly position in the circumferential direction, and which assembles the segments one by one with the erector part as the excavation progresses, constructs a tunnel, and moves forward by a shield jack, A hoist beam extending from the rear in the excavation direction to the erector part along the inside of the tunnel, a trolley supported so as to be freely movable along the hoist beam, and a trolley pivotally supported on the trolley so as to be freely movable in the direction of gravity It has a hoist boom, a hoisting machine installed on the trolley, and a hook or hanging fitting that hangs from the hoisting machine to the tip of the hoist boom via a pulley and suspends the segment. The present invention is characterized by comprising a wire rope, and a boom-lifting member provided on the wire rope, which engages with the hoist boom each time the wire rope is hoisted, and causes the hoist boom to move up and down in accordance with the hoisting of the wire rope. Segment transport device.