JP3320885B2 - Segment loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment loading device, and more particularly to a segment loading device suitable for automatically loading a lining segment into a tunnel under construction. It is.

[0002]

2. Description of the Related Art Conventionally, the most common method of loading a segment into a tunnel under construction is at a starting shaft or at an opening site (hereinafter, simply referred to as a "shaft" or "shaft side" including both of them). The segment is loaded on a trolley, a battery locomotive operated by an operator drives the trolley, pulls the existing tunnel, carries it into the rear part of the shield machine 10, and unloads with a hoist crane behind the shield machine 10, A certain amount of segments is stocked behind the shield machine 10, and the stocked segments are suspended by the hoist crane, guided by the hoist crane rail, and transported to a position where they can be gripped by the erector.

Further, a method of using the hoist crane only for unloading and transferring the segments to a place where the segments can be gripped by an erector by a roller conveyor having rotatable rollers arranged after the stocking place has been put to practical use. .

[0004]

However, according to the above-described conventional segment loading method, the existing tunnel T usually has no space allowance for the battery locomotive to face each other. Since various devices such as a ventilator and a power supply must be accommodated, only a large-diameter tunnel has enough space for a battery locomotive to face each other.) If you do not temporarily stock it in the pit behind, the segment assembling work will be hindered. In other words, since the battery locomotive carries the segments once in one round trip, it takes a considerable amount of time to reciprocate the battery locomotive, and the segment loading may not be in time for the segment assembly, which is prevented. Therefore, a method is adopted in which many segments are carried in at once and stocked. Then, there is a problem that the narrow mine is made narrower and smaller by the stock of this segment.

Further, as the excavation progresses and the distance from the shaft to the shield machine becomes longer, a larger number of segments must be stocked, so that the stock location of the segments may extend over a considerable distance range in the mine. .

[0006] Also, the temporarily stocked segment is
Transferring to the above hoist crane requires the assistance of a skilled worker, and usually a plurality of skilled workers select a predetermined segment at the stock location and suspend it with a hoist crane. There is a problem that the work requires considerable labor.

Furthermore, all segments are not necessarily of the same shape, and key segments having different shapes may be mixed. In such a case, the operator checks and manages the order of transfer to the hoist crane. Therefore, it is difficult to reload the hoist crane, and there is a problem that it requires labor and time to confirm the order of carrying in the hoist crane.

Further, it is a matter of course that the unloading work of the segment by the hoist crane and the operation of the battery locomotive are also accompanied by danger. However, the transportation by the hoist crane causes the shaking because the segment is suspended in an unstable manner. Accidents with workers.

Furthermore, the fact that a large number of humans intervene in the work process may lead to various accidents unless a considerable time margin is set, and as a result, the segments can be efficiently loaded. It is difficult and is a major obstacle to speeding up tunnel construction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a labor-saving and efficient segment loading device capable of sequentially loading only necessary segments to a predetermined location.

Still another object of the present invention is to enable a segment to be automatically carried into a portion that can be gripped by an erector without requiring reloading on the way.

[0012]

In order to solve the above-mentioned problems, the construction of the present invention, which meets the above-mentioned object and is based on the scope of the appended claims, is described as follows. Shield machine 10 having erector 20
The upper rail 31 and the lower rail 32 on which the self-propelled segment carry-in truck 40 can travel to the rear part of the upper and lower rails are laid in upper and lower two stages, respectively.
It has an elevating platform 52 provided with an extended rail 51 of a length to which the segment carrying vehicle 40 can get in, and the rear end of the extended rail 51 is moved to the upper rail 31 depending on the elevation position of the elevating platform 52. And a lower rail 32 is provided with a technical means including a lifting carriage 50 which can be switched and connected to either end of the lower rail 32.

[0013] Further, the invention of claim 2 provides that the erection of the erector 20 from the starting shaft or the starting opening portion in the existing tunnel T is performed.
The upper rail 31 and the lower rail 32 on which the self-propelled segment carrying vehicle 40 can travel to the rear part of the shield machine 10 having the
At the tip end of the first and second lifters 32, there is provided a lift 52 provided with an extension rail 51 of a length that allows the segment carry-in truck 40 to ride on. A lift truck 50 whose rear end can be switched and connected to one end of the upper rail 31 or the lower rail 32 is provided.
Are rotated by the drive source and are provided with the existing segments S1, S2, S
.. Provided with rolling wheels 58, 58, 58,...
1, S2, S3,... Are provided with technical means capable of self-propelling between the tip portions.

[0014] Further, the invention of claim 3 is that the erection of the erector 20 from the starting shaft or the starting opening portion into the existing tunnel T is performed.
The upper rail 31 and the lower rail 32 on which the self-propelled segment carrying vehicle 40 can travel to the rear part of the shield machine 10 having the
At the tip end of the first and second lifters 32, there is provided a lift 52 provided with an extension rail 51 of a length that allows the segment carry-in truck 40 to ride on. A lift truck 50 whose rear end can be switched and connected to one end of the upper rail 31 or the lower rail 32 is provided.
On the tip side of the existing segments S1, S2,
A telescopic telescopic rail 35 is provided so that it can be extended to the front end of S3... And the base end is connected to the front end of the lower rail 32 via the extension rail 51 of the elevator 52 at the lowered position. It takes technical measures.

It should be noted that the inventions of claims 4 to 6 are applicable to the respective embodiments of the segment carrying truck 40.
[Claim 4] A basic segment carry-in truck 40 in which one or a plurality of new segments S0 are stacked one above the other and mounted on top of one another. , S0... Are arranged side by side and sequentially moved forward by the belt conveyor 42.
Uses a turntable 43 and a belt conveyor 42b in combination with a turntable-attached belt conveyor-type segment carrier 40b.

[0016]

Therefore, in the segment carrying device of the present invention, the upper rail 31 serves as a forward path of the segment carrying vehicle 40, and the lower rail 32 serves as a return path of the segment carrying vehicle 40 (of course, the difference is substantially the same even if the vehicle is upside down). However, in the present application, as an embodiment, the upper rail 31 will be described as the forward path and the lower rail 32 will be described as the return path.) It can be used, and a plurality of segment carry-in vehicles 40 (belt conveyor type segment transport vehicles 40a) can be used for both the forward and return paths. Alternatively, it is a matter of course that the conveyor belt can be a belt conveyor type segment transport vehicle 40b with a turntable. However, except for the case described below, the “segment transport vehicle 40” including these is simply referred to as “segment transport vehicle 40” at the same time. A plurality of segment loading tables on the outward path (upper side rail 31) that can be run and travel sequentially 40,40,40 is one that exhibits the effect of the segment can stock in ....

When the lift 52 is in the raised position,
Since the extension rail 51 is connected to the upper rail 31, the segment loading trolley 40 equipped with the new installation segment S <b> 0 can enter the lifting trolley 50,
After the newly installed segment S0 is transferred to the conventional hoist crane or the like on the lift truck 50, the lift 52 is lowered,
The empty segment carrying truck 40 is moved to the lower rail 32.
The elevator is moved up, and the lift 52 is raised again to prepare for the entry of the next segment carrying truck 40 on the upper rail 31. Therefore, the desired new segment S0 is sequentially set without waiting for the reciprocation of the segment loading cart 40.
Can be speedily carried into the lift truck 50 at a predetermined position.

Since the number of the new segments S0 is not large at a time and desired ones are sequentially carried in, the use of the hoist crane from the lift truck 50 is not limited to the conventional hoist crane. Then, the lift truck 5
0, the existing segments S1, S
2, S3... Wheels 58, 58, 58,.
Is provided so that it can run by itself between the leading end portions of both rails 31, 32 and the leading end portions of the existing segments S1, S2, S3... It is possible to bring in the segment S0 to the leading edge of the existing segments S1, S2, S3,... Which can be gripped by the erector 20.

Further, according to the invention of claim 3, on the tip end side of the lift truck 50, an extensible tip is provided on the existing segment S1,
A telescopic telescopic rail 35 connected to the distal end of the lower rail 32 via the extended rail 51 of the lift table 52 whose base end is at the lowered position is provided so as to extend to the distal end of S2, S3. By running the segment carrying truck 40 on the telescopic rail 35, the segment S0 for new construction can be carried to the forefront part of the existing segments S1, S2, S3... Which can be gripped by the erector 20. To present.

[0020]

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the figure, reference numeral 10 denotes a conventionally known shield machine, T denotes an existing tunnel excavated by the shield machine 10, S1, S2, S3,..., Existing segments for lining the existing tunnel T.

The shield machine 10 may use any of an earth pressure shield method, a muddy water shield method, and other tunnel excavation methods, but a shaft (not shown) on the right side of FIGS. 1 to 4. It is assumed that the excavation is started further and the tunnel is excavated toward the left side of “FIG. 1” to “FIG. 4”.

The shield machine 10 excavates the cutter disk 11 on the tip side (the left side of FIGS. 1 to 4).
To rotate the existing lining segments S1, S2, S3
Drilling is performed with a propulsion force using a shield jack (not shown) receiving the reaction force. When the digging for a certain distance is completed, the digging is temporarily stopped and the shield in the rear chamber B of the shield machine 10 is shielded. The jacks are retracted, and the new segments S0, S0,
S0... Are assembled in a ring shape, and then the newly assembled segment ring is regarded as the above-described existing existing segment S1, and the excavation by the shield machine 10 is resumed as in the related art. . Although omitted in the drawing, the excavated sediment called excavated sludge is also carried out to the ground by a conventionally known sludge discharging device such as a sludge drainage pipe or a sludge bogie called slitter. .

In the rear room B of the shield machine 10, a new segment S0 is gripped and moved to a predetermined position.
A new segment S0, S0, S that is installed and divided into multiple segments
Erector 20 for assembling 0 ... in a ring shape
Is arranged in the same manner as in the prior art.

The erector 20 has an erector main body 21 fixed in the rear chamber B of the shield machine 10, and the erector main body 21 is provided with a central axis of the shield machine 10 (generally coaxial with the tunnel axis, hereinafter simply referred to as "tunnel"). Axis.)
Is provided with a rotating body 24 which is rotated by a driving source (not shown) with a rotating center axis as a rotation center axis, and a cylinder 25 having a rod 25a which advances and retreats in a direction perpendicular to the tunnel axis is attached to the rotating body 24. 25 (Rod 25
The gripping device 23 for gripping the new segment S0 is attached to the tip side of a) as in the conventional case.

The gripping device 23 is generally called a normal gripping device. However, if the new segment S0 can be detachably held, it can be locked, gripped, pinched, magnetically or negatively attracted. Any method such as suction by force may be adopted. Conventionally, the screwing method shown in FIG.
5 "is generally adopted, and it is a matter of course that the present invention also employs these systems.

In the screwing method shown in FIG. 14 described above, the retaining nut S
1 is buried, and a bolt 23a that is appropriately rotated by a drive source is protruded from the tip of the gripping device 23, and this bolt 23a is screwed into a nut Sa buried in the new segment S0. Thus, the new segment S0 can be held by the gripping device 23.

The engagement method shown in FIG.
Concave portions Sb, Sb, Sb,.
Is used for the new segment S0 having a hole Sc, which is previously formed in the rising side wall Sd of the concave portion Sb in a direction parallel to the central axis of the new segment S0.
Sc, Sc... Are provided, and the gripping device 23 is provided at its tip with a gripping box 23b that fits into the recess Sb.
The holding claws 23c, 23c, 23c,..., The tips of which come in and out from the side surfaces of the holding box 23b, are housed in the holding box 23b by an appropriate drive source such as a solenoid.
3c, 23c, 23c...
The new segment S0 can be held by the gripping device 23 by being engaged in c, Sc.

The erector 20 generally includes a rotating body 24
Is provided with a horizontal rail 26, and the gripping device 23 is guided by the horizontal rail 26 so as to be movable in the tunnel axial direction by a drive source (not shown). Larger ones may be used, the details of which will be described later.

According to the present invention, the rear part of the shield machine 10 having the erector 20 from the shaft in the existing tunnel T (the rear part means a suitable distance part behind the shield machine 10, and this distance is particularly limited. The upper rail 31 and the lower rail 32, on which the self-propelled segment carrying truck 40 can travel, are laid up and down in two stages.

The upper rail 31 and the lower rail 32
What is necessary is just to use the same thing as the rail for conventional battery locomotives, and it is a matter of course that a pair of rail bodies are respectively fixed and laid in parallel. The upper rail 31 and the lower rail 32 are connected to a rail 31 for rail fixing.
are fixed in the existing tunnel T and laid thereon, but the lower rail 32 can be laid directly on the floor surface of the existing tunnel T without a problem.

The self-propelled segment carrying truck 40
As shown most clearly in FIG. 8, wheels 45, 4 rolling on both rails 31, 32 are provided on the bottom surface of the bogie main body 41.
., And the wheels 45 are rotated (forward / reverse) by a driving source 47 mounted for traveling, and the segment carrying truck 40 is divided into an upper rail 31 and a lower rail 3.
2 (including extension rails 51 and telescopic rails 35)
I am guided to run by myself.

Although not shown, the driving source 47 for traveling is controlled by a traveling position detection sensor or the like, and is configured to be operated automatically by unmanned operation or remotely by a remote controller. It is preferable that an obstacle detection device be attached to the driving source 47 for traveling so that the vehicle stops automatically when an obstacle is detected, particularly during unmanned driving.

As shown in FIG. 8, the segment carrying truck 40 basically has one new segment S0 mounted thereon, or a plurality (two in the figure). May be stacked one on top of the other, but various other embodiments can be envisaged.
The details of the embodiment will be described below. Although the upper surface serving as the loading platform of the segment carrying truck 40 in the example of FIG. 8 is a flat surface, it may be partially formed as a bay surface to stably hold the new segment S0, or may be formed as a new segment S0. It is needless to say that a lower surface receiving projection or the like (not shown) for supporting the lower surface may be provided at an appropriate position.

The segment carrying truck 40 shown in FIG.
It is also desirable to provide a turntable (not shown) on the upper surface of the device, and it is also desirable to mount a new segment S0 on the turntable so that the direction of the new segment S0 can be changed. .

The embodiment of the belt conveyor type segment carrying truck 40a shown in FIG. 9 and FIG. 10 has a belt conveyor 42 which rotates in the longitudinal direction, and one or more rings are provided on the conveyor 42. Are arranged side by side in the tunnel axis direction (in FIG. 4, two sets of new segments S0 are arranged in the tunnel axis direction. Needless to say, it is also possible to make it longer and to arrange more numbers in parallel.) Needless to say, the belt conveyor type segment carrying truck 40a is also a self-propelled type.

As shown in FIGS. 9 and 10, the belt conveyor 42 is a normal belt conveyor, that is, rollers 46, 46 are provided at the front end and the rear end of the carriage body 41, and both rollers 46, 46 are endless. The belt conveyor 42 may be rotated by a drive source (not shown), and the newly installed segments S0, S0, S0,. May be desirable for transfer position adjustment). The belt conveyor 42 may use a chain loop in place of the endless belt, and includes a conventionally known chain conveyor.

The new segments S0, S0, S0
.. Are often heavy, and the conveyor 42
It is desirable to increase the loading capacity by arranging rotatable rollers on the lower surface side of the belt at a small interval in the feed direction, and also to use a large number of sprockets when using a chain conveyor, It is desirable to use in combination with a number of rotatable rollers to increase the loading capacity.

Normally, the segment S0 for new construction has a tunnel diameter of about 4 to 5 including the key segment for a small diameter tunnel, so that the curved central axis of the segment S0 for new construction is parallel to the central axis of the tunnel. To be carried in by the inner diameter of the existing tunnel T and the segment S0 for new construction.
Since there is little difference from the overall length, it is difficult to secure a sufficient space for conveyance, and it becomes difficult. Therefore, in such a case, as shown in FIG. 1 to FIG.
Is oriented in the direction orthogonal to the tunnel central axis, in other words, the ring width direction of the new segment S0 is placed on the belt conveyor 42 with the ring width direction oriented in the direction orthogonal to the tunnel central axis.

In the case of a large-diameter tunnel, since the number of divisions of the new segment S0 is usually large, even if the number of divisions is small, the ratio between the tunnel inner diameter and the length in the segment circumferential direction becomes large, so that there is sufficient margin. Since you can carry in,
As shown in FIG. 18, the curved central axis of the new segment S0 may be placed on the belt conveyor 42 in a direction parallel to the central axis of the tunnel. When the new segment S0 is placed in this manner, as shown in FIG. 18, the belt conveyor 42 inclines the two rotatable rollers 48, 48 disposed on the lower surface side of the belt in a V-shape to form a belt. It is desirable to form a trough-shaped section having a curvature adapted to the curvature of the new segments S0, S0, S0... For stably mounting and moving the new segments S0, S0, S0.

As described above, the segment carrying truck 40 having the belt conveyor 42 which rotates in the longitudinal direction, sequentially rotates the belt conveyor 42 to sequentially install the new segments S0, S0, S0,. Can be sent to the front end side, and as another function, the entire length is longer, and a part of the front end side is kept from the front end of the existing segments S1, S2, S3. Further, in the invention of claim 3, it protrudes further forward than the distal end of the telescopic rail 35 described later (see FIG. 4), and the new segment S 0 on the distal side is carried to a position where it can be gripped by the conventional erector 20. Although it is possible, we will discuss this feature later.

The belt conveyor 42 is operated by a worker operating a power switch of a drive source of the conveyor 42, and while watching the new segment S0 on the belt conveyor 42, the belt conveyor-type segment carrying truck 4 is operated.
0a may be moved to a desired position on the drive source, but the drive source is controlled by a control panel (either by making the rotation distance at one time constant or by detecting the moved new segment S0 by a sensor. It is needless to say that the driving source may be stopped, and the moving distance (feed amount) of the new segment S0 may be set to a predetermined value.
When the feed amount is automatically controlled, it may be necessary to fine-tune the mutual position with the erector 20, which will be described later. Is also desirable.

In the embodiment of the belt conveyor type segment carrying truck 40b with a turntable shown in FIG. 11 and FIG. 12, a turntable 43 is provided at the tip end side, and the segments are taken into the turntable 43. , And a plurality of new installation segments S0, S0, S0,... Arranged side by side in the tunnel axis direction behind the turntable 43 and sequentially fed onto the turntable 43.
2b, and a drive source is mounted on the rails 31, 32.
It is designed to be able to travel up and down.

In other words, as described above, when the new segment S0 is carried into the existing tunnel T, if the inner diameter of the existing tunnel T is not sufficiently longer than the arc length of the new segment S0, the new segment S0 is rejected. The arc length direction, which is the longitudinal direction, is in the tunnel axis direction, and the segment width direction, which is the short direction, is in the tunnel radial direction (that is, the curved central axis of the new segment S0 is oriented in the direction orthogonal to the tunnel axis). There are times when it is inevitable. However, when the new segment S0 carried in this direction is installed by the erector 20, the curved central axis and the tunnel axis must be coaxial, and the direction of the new segment S0 must be changed.

The direction change of the new segment S0 can be performed after the erector 20 grips the new segment S0.
If the shaft is made rotatable and movable in the direction of the tunnel axis, the structure becomes complicated. Also, as described above, the amount of protrusion when the tip is partially protruded (see FIG. 4) ) Must be set large, so in the present invention, the direction is changed on the belt conveyor type carrying vehicle 40b with a turntable.

Therefore, in the belt conveyor type segment carrying truck 40b with a turntable, a turntable 43 is provided on the leading end side of the truck body 41. The turntable 43 is rotated by a driving source 43b.
The new segment S0 placed on the top plate 43a is rotated together with the top plate 43a.
The turntable 43 may be rotated by 90 degrees. For this purpose, a rotation stopper may be provided, or a rotation angle detection sensor may be provided to reciprocate in a range of 90 degrees.

The top plate 43a is provided with a take-up conveyor 44 for taking in the new segment S0 fed from the lateral direction. In the illustrated example, the take-up conveyor 44 is partially provided on the top plate 43a. A roller conveyor composed of juxtaposed rotatable roller bodies 44a, 44a, 44a,... Protruding upward is used. And
The purpose of use of the take-up conveyor 44 is to guide the newly-installed segment S0 fed from the lateral direction to the upper center of the top plate 46. Therefore, when the top plate 43a is in the standby position, Bodies 44a, 44a, 44a
.. May be juxtaposed between the rear end side of the top plate 43a and the vicinity of the center.

It is to be noted that the above-mentioned take-up conveyors 44 are different from those shown in the drawing. If the length of each roller body 44a is reduced and the intervals are reduced, the take-up conveyors 44 can smoothly take in the new segments S0. When a roller conveyor is used for the take-up conveyor 44, the top plate 43a is set as shown in FIG.
In the state shown in FIG. 12, a V-shaped cross section is formed so that the center is lower and the left and right are sequentially higher, or a stopper projection is provided at a position where the left side of the figure is lower and slightly closer to the left side than the center. The segment S0 may be reliably and easily guided to the center of the top plate 43a.

It is needless to say that the take-in conveyor 44 may be replaced with a normal belt conveyor. In this case, however, a drive device for the belt conveyor and a control device for the amount of belt rotation are required. The structure can be simplified by using the roller conveyor of the illustrated example.

The belt conveyor 42b provided behind the turntable 43 and the traveling mechanism of the bogie main body 41 may be the same as those of the belt conveyor type segment carrying vehicle 40a, and the description thereof will be omitted.

An elevating platform 52 provided with an extended rail 51 having a length that allows the segment carrying vehicle 40 to ride on the distal end side of the rails 31 and 32 is provided.
An elevating vehicle 50 is provided so that the rear end of the extension rail 51 can be selectively connected to one of the upper rail 31 and the lower rail 32 depending on the elevating position of the elevating table 52.

As shown most clearly in FIG. 18, the elevator 50 is provided with wheels 58, 58, 5 on a truck body 50a.
8... Are provided so that the mine can be moved. In addition, the movement of the lift truck 50 may be either a self-propelled type equipped with a drive source (not shown) or a multi-propelled type (in the case of claim 2, the self-propelled type is used). Things.

The elevator 52 provided on the elevator 50 is
As shown in FIG. 16 or FIG.
, A driving source 53 and a pinion 54 are provided.
The racks 55, 55, 55,... Are provided in the rack 0a so that the elevator 52 is guided by the rack 55 to move up and down. Of course, the elevator 52 is moved up and down by other methods. In the example shown in FIG. 17, one end of each of the links 56, 56 which cross each other in an X-shape and whose crossing portion is pivotally connected by a shaft 57, is pivotally connected to the lifting platform 52 and the bogie main body 51, respectively.
The other ends of the carriages 56 are slidably connected to the elevator 52 and the carriage main body 51, and a pantograph-type system in which a hydraulic cylinder 59 is interposed between one link 56 and the carriage main body 51 is provided. Uses a lifting device.

Both the rack type and pantograph type elevating devices allow the elevating table 52 to be lowered to a position as low as possible, and the erector 20 normally holds the new segment S0 at the bottom of the tunnel. Therefore, it is necessary to consider that the erector 20 can easily hold the cradle, and it is not desirable to dispose the lifting device below the lifting table 52. Therefore, as another lifting device (not shown), a method in which the lifting table 52 is hung up and down is preferable. It is preferable that the lifting device be hung by a chain or hung by a hydraulic cylinder having a cylinder end fixed upward.

The elevating table 52 is provided with an extended rail 51 of a length that allows the segment carrying vehicle 40 to ride on. The extending rail 51 is extended depending on the elevating position of the elevating table 52. Since the rear end of the upper and lower rails 51 can be switched and connected to either of the upper rail 31 and the lower rail 32,
If the extension rail 51 is connected to the extension rail 51 and the upper rail 31, the segment carrying truck 40 can be moved up and down
You can ride up to the top. It should be noted that this segment carrying truck 40 is a new segment S0, S0, S0.
・ ・ When using a long object with a large number of
An extended rail 51 is provided which is long enough to allow the whole of the long segment carrying truck 40 to ride on, and the lifting platform 52 and the truck body 50a are of course also provided with the segment carrying truck 40.
It is a matter of course that the length is adapted to the length of.

The segment loading trolley 40 up to the lifting trolley 50
, The newly installed segment S0 thereon may be conveyed by a conventional method such as a hoist crane 60 as shown in FIG. 1 or a roller conveyor (not shown). In other words, the conventional segment transport means may be used instead of the lift truck 50, but even in this case, the lift truck 50 is at a predetermined position, and a predetermined new segment S0 is sequentially transported to the fixed position. Therefore, it is sufficiently effective for labor saving and can greatly contribute to speeding up of segment assembly.

However, the operation of transferring the hoist crane 60 to the hoist crane 60 is not complicated, and it is desirable to omit this transfer. Fortunately, according to the present invention, the segment carry-in trucks 40 are sequentially loaded into the lift trucks 50 at the fixed positions.
It is relatively easy to automatically transport the new installation segment S0 or the new segment S0 on the segment carry-in vehicle 40 to a place where the erector 20 can grip it. The configuration for that purpose will be described below.

First, the first structure corresponds to the invention of "Claim 2", and the lift truck 50 is rotated by a drive source (not shown) to rotate the existing segments S1, S2, S3.
Are provided. The wheels 58, 58, 58,...
2, S3... Can be self-propelled.

The self-propelled movement of the elevator 50 may be performed by unmanned operation controlled by a moving position sensor or the like, or by remote control by a remote controller.

When the segment carrying truck 40 is loaded on the lifting truck 50, the lifting truck 50 is driven on the existing segments S1, S2, S3,.
As shown by the broken line in FIG. 2, the segment carrying vehicle 40 or the new segment S0 thereon can be carried over the existing segment S1 at the forefront. At this time, the lift 52 is lowered.

When the new segment S0 is carried over the existing segment S1 at the forefront, the new segment S0
However, the conventional erector 20 cannot directly grip the new segment S0 located above the existing segment S1 at the forefront. Incidentally, the conventional erector 20 is described as being capable of moving the gripping device 23 in the tunnel axis direction. However, since the moving range is about several cm to 40 cm, it cannot cope with a segment having a width of about 1 m. is there.

Therefore, the new segment S0 carried in by the segment carry-in truck 40 is transferred to the segment carry-in truck 4
The following method can be adopted for directly gripping the erector 20 from above. The first method is to enlarge the range in which the gripping device 23 of the erector 20 can be moved in the tunnel axis direction more than before, and to make the movable range of the gripping device 23 larger than the width of the new segment S0. The new segment S0 located above the existing segment S1 may be directly gripped by the erector 20.

Specifically, in the examples shown in FIGS. 2 and 3, the gripping device 23 is movably attached to a horizontal rail 26 protruding from the rotating body 24 of the erector 20 within a range of a distance L 1 shown in FIG. 2. In this method, the conventional erector 2
0 has the horizontal arm 26, so that the horizontal arm 26 is used by extending the horizontal arm 26 by a predetermined distance, and although not shown in the drawing, a driving source (usually a hydraulic cylinder) for moving the gripping device 23 in the tunnel axial direction. Are used, but drive wheels,
A drive mechanism such as a chain or a belt may be used. ) May be used that can be adapted to the movement range.

The embodiment shown in FIG.
The hydraulic cylinder 27 is fixed in the axial direction of the tunnel for rotation, and the gripping device 23 is attached to the tip of a rod 27a of the hydraulic cylinder 27 via a vertical cylinder 25.
The same function as extending the horizontal rail 26 is realized by the reciprocation of the rod 27a of the hydraulic cylinder 27.

The newly installed segment S0 is gripped by the erector 20, and the empty lift truck 50 returns to the top end of the upper rail 31 and the lower rail 32, and the segment carry truck 40 travels on the lower rail 32. Returning to the shaft, the elevator 52 is then raised, and the next segment loading vehicle 40
Is completed, one step of the lift truck 50 is completed, and this step may be repeated when necessary.

By moving the lift truck 50 as described above, it is possible to eliminate the need for any manual reloading of the new segments S0, and the new segments S0 loaded on the shaft side are automatically replaced by the cover factory. It can be carried in and installed in

The following configuration for automatically transporting the new segment S0 to a place where the new segment S0 can be gripped by the erector 20 corresponds to the invention of "claim 3". A part of the carriage 50 to the segment carry-in carriage 40 is made to protrude further forward than the leading-edge existing segment S1. Lifting carriage 50 is "Fig. 1"
If the entire length is short as in FIG. 2, it is impossible to protrude this. However, if the total length of the lift truck 50 is set to be long, a part thereof can be protruded further forward than the existing segment S1 at the forefront. This will be described in detail below.

That is, in place of the method of moving the elevating platform 50, the invention of claim 3 provides the segment loading vehicle 4
0 is made to travel further forward than the lift truck 50. In front of the travel truck 50, the extensible distal end is formed so as to extend to the distal ends of the existing segments S1, S2, S3. The lifting platform 5 in the lowered position
A telescopic telescopic rail 35 connected to the end of the lower rail 32 via the second extension rail 51 is provided.

The telescopic telescopic rail 35 is
As shown in FIGS. 5 to 7, the proximal rail 35
a telescopic side rail 35b which can be inserted and removed telescopically inside or outside the base side rail 35a.
And the existing segments S1, S2, S3,... Are provided on both the base side rail 35a and the telescopic side rail 35b.
..A plurality of rolling wheels 35c, 35c, rolling on the inner bottom surface of.
. Are provided so as to be movable in the tunnel axis direction.

In the illustrated example, the base side rail 35a
As shown most clearly in FIG.
3 is used.
Are mounted on both sides of the vehicle. The extension-side rail 35b uses a slightly smaller cross-section rectangular pipe.
b, the lower surface opening 3 of the base rail 35a
Rollers 35c, 35c, 35c projecting downward from 3
・ It is provided.

The telescopic telescopic rail 3
It is needless to say that the pair of rails is formed by arranging a pair of rails in parallel. If the two parallel rails are connected by connecting arms 34, 34, 34,. You may be able to secure.

Although not shown in the drawing, the base end of the base side rail 35a is detachably fixed to a fixed portion by a suitable means such as a screw or a pin.
Are connected to the existing segments S1, S2, S3,.
Of the existing segment S1,
S2, S3... Are connected by appropriate means such as engagement to a perfect circle holding device C, and the base side rail 35a and the telescopic side rail 35b are connected to rolling wheels 35c, 35c, 35c.
・ ・ Although it does not always expand or contract (move),
When the new segment S0 is assembled and the perfect circle holding device C is advanced, the telescopic side rail 35b is turned by the rolling wheels 35c and 35c.
., 35c... are advanced together.

When the telescopic side rail 35b is extended to the maximum amount, the fixing of the base side rail 35a is released, the base side rail 35a is advanced, and the lifting carriage 50 is advanced by the distance of the gap formed there. , A new upper rail 31 and a lower rail 3 are provided in the gap created by the advance of the lift truck 50.
The two are added together.

The installation of the telescopic rail 35 makes it possible to move the segment carrying truck 40 further to the front of the lift truck 50. First, when the segment carry truck 40 stops on the lift truck 50, the lift platform 5 is stopped.
2 is lowered, and then the segment carrying truck 40 is caused to travel on the telescopic rail 35, so that the segment carrying truck 40 has the existing segments S1, S2, S3,... As shown by broken lines in FIG. Can be advanced to the cutting edge.

When the segment carrying truck 40 is advanced to the leading edge of the existing segments S1, S2, S3,..., The new segment S0 may be gripped by the erector 20, as described above. ", The segment carrying truck 40 is replaced with the existing segments S1, S2, S3,.
・ It is designed to advance to a position where a part protrudes further forward than the foremost point.

In order to protrude the segment carrying truck 40 from the telescopic rail 35 as described above, a gap may be formed below the protruding portion of the segment carrying truck 40 and the balance may be lost.

First, the first contrivance is that the segment loading cart 4
By using a long 0, the balance is not broken even if a part of the sufficiently long segment carry-in truck 40 protrudes.

A second contrivance is to provide a balance weight (not shown) at the rear of the segment carrying vehicle 40 to prevent the front wheels 45 from floating on the balance weight, thereby preventing the whole from leaning.

The third idea is that the wheels 45 are mounted on the telescopic rails 35.
A shape having an opposing wheel (not shown) on the lower surface side of the rail surface prevents the wheel 45 from floating above the rail surface.

A fourth contrivance is that, as shown in FIG. 4, the wheel 45a in front of the segment carrying truck 40 is automatically moved up and down until it receives a certain pressure, and the wheel 45a expands and contracts. When the wheel 45a protrudes forward from the rail 35, the wheel 45a automatically descends and comes into pressure contact with the inner peripheral surface of the shield machine 20 so as to have a predetermined loading capacity. In addition, if these ideas are used as needed,
As shown by a broken line in FIG.
The new projecting segment S0 can be gripped even by the conventional erector 20.

The segment S0 for new installation is gripped by the erector 20, the empty segment carrying truck 40 is made to run backward, and the extension rail 51 and the lower rail 32 of the descending elevator 52 are directed toward the shaft. To run. Lifting table 52
When the segment carrying truck 40 passes through the part, the lifting platform 52
Is raised to allow the next segment carrying truck 40 to enter, and this process may be repeated as necessary.

Therefore, the installation of the telescopic rails 35 makes it possible to completely eliminate the need for manual reloading of the new segments S0, and the new segments S0 loaded on the shaft side are automatically carried into the cover factory. It can be installed.

[0082]

As described above, according to the present invention, the forward path of the segment carry-in vehicle 40 is provided as the upper rail 31 and the return path and the lower rail 32 are separately prepared. A plurality of segment loading vehicles 4 can be sequentially loaded, and a plurality of segment loading vehicles 4 are provided on both rails 31 and 32.
Thus, the present invention can provide a segment loading device capable of waiting for 0, saving labor, and coping with speedy segment assembly.

Further, according to the present invention, by using the lift truck 50, the segment carrying truck 40 can be smoothly switched between the upper rail 31 and the lower rail 32 and run. The switching between the forward path and the return path is based on the condition that the location is narrow in the mine and the condition that the newly-installed segment, which is the conveyed material, is heavy, and it is difficult to secure the space for switching on a plane. The change of the inclination of the inclined track, the change of the inclination of the inclined track, there is a possibility that the lift truck 50 is inclined and the load of the new installation segment S0 collapses, but the lift truck 50 of the present invention requires less space, and
It is possible to provide a segment loading device in which the load of the new installation segment S0 does not collapse.

Further, according to the present invention of claim 2, since the lift truck 50 is of a self-propelled type, the new segment S
Thus, the present invention can provide a segment carry-in device capable of carrying a garbage 0 directly to a portion that can be directly gripped by the erector 20 with the carry-in carriage 40 and capable of automatically carrying in the new segment S0.

Further, in the invention of claim 3, since the telescopic rails 35 are installed, the new installation segment S0 can be carried to a position where the carrying truck 40 can directly hold the new segment S0 by the erector 20, and the new installation segment S0 can be automatically carried in. It is possible to provide a segment carrying device capable of performing the above.

Further, when the belt conveyor type segment carrying truck 40a of claim 5 is used, a new segment S0 for one ring is prepared at a time (there is no need to prepare one ring at the same time). An appropriate number of new segments S0, such as a half amount, may be prepared.) Also, the new segments S0 can be sequentially moved to a portion that can be gripped by the erector 20 with the belt conveyor 42, so that a single ring segment ring is assembled. It is possible to provide a segment loading device that can supply the new segment S0 sufficiently in time for work and can greatly contribute to speedy tunnel excavation work.

Further, by using the belt conveyor type segment carrying truck 40a with a turntable according to claim 6, the direction of the new segment S0 can be changed, and a more efficient segment carrying device can be provided.

[Brief description of the drawings]

FIG. 1 is a partially sectional front view showing an embodiment of a segment carrying device of the present invention.

FIG. 2 is a partial cross-sectional front view showing another embodiment of the segment carrying device of the present invention.

FIG. 3 is a partially sectional front view showing still another embodiment of the segment carrying device of the present invention.

FIG. 4 is a partial cross-sectional front view showing still another embodiment of the segment carrying device of the present invention.

FIG. 5 is a plan view of a telescopic rail used in the present invention.

FIG. 6 is a front view of the telescopic rail.

FIG. 7 is an enlarged vertical sectional view of the telescopic rail.

FIG. 8 is a front view of a segment carrying truck used in the present invention.

FIG. 9 is a plan view of a belt conveyor type segment carrying truck used in the present invention.

FIG. 10 is a front view of the belt conveyor type segment carrying truck.

FIG. 11 is a plan view of a belt conveyor type segment carrying truck with a turntable used in the present invention.

FIG. 12 is a front view of the belt conveyor type segment carrying truck with a turntable.

FIG. 13 is a sectional view of another embodiment of the erector used in the present invention.

FIG. 14 is a perspective view of a main part of a segment holding device of the erector.

FIG. 15 is a perspective view of a main part of a segment holding device of the erector.

FIG. 16 is a partial cross-sectional view of a main part of a lift truck used in the present invention.

FIG. 17 is a partial front view of a main part of another embodiment of the lift truck used in the present invention.

FIG. 18 is a side view of another embodiment of the lift truck used in the present invention.

[Explanation of symbols]

 T Existing tunnel 10 Shield machine 20 Erector 31 Upper rail 32 Lower rail 35 Telescopic telescopic rail 40 Segment carry-in trolley 42 Belt conveyor 43 Turntable 50 Elevator trolley 51 Extension rail 52 Elevator 58 Wheel S0 New segment S1 Existing segment S2 Existing segment S3 Existing segment

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-98900 (JP, A) JP-A-60-34000 (JP, A) JP-A-5-332100 (JP, A) 248199 (JP, A) JP-A-5-98899 (JP, A) JP-A-2-66300 (JP, A) JP-A-60-96500 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 11/40 E21F 13/02

Claims (6)

(57) [Claims] 1. An upper stage side on which a self-propelled segment carrying truck (40) can travel in a tunnel (T) from a starting shaft or a starting port portion to a rear portion of a shield machine (10) having an erector (20). A rail (31) and a lower rail (32) are laid in two stages, upper and lower, and the end of both rails (31, 32) has a length that allows the segment carrying vehicle (40) to ride on. An elevator (52) provided with an installation rail (51), and the extension rail (5) is provided depending on the elevation position of the elevator (52).
1) A segment loading device provided with a lifting carriage (50) whose rear end can be switched and connected to one of the upper rail (31) and the lower rail (32). 2. An upper stage side on which a self-propelled segment carrying vehicle (40) can travel in a tunnel (T) from a starting shaft or a starting opening portion to a rear portion of a shield machine (10) having an erector (20). A rail (31) and a lower rail (32) are laid in two stages, upper and lower, and the end of both rails (31, 32) has a length that allows the segment carrying vehicle (40) to ride on. A lifting platform (52) provided with a mounting rail (51), and the extension rail (5) is provided depending on the lifting position of the lifting platform (52).
1) An elevator car (50) is provided so that the rear end can be switched and connected to one of the upper rail (31) and the lower rail (32). Are provided with wheels (58, 58, 58,...) That are rotated by a drive source and roll on existing segments (S1, S2, S3,.
32) and the existing segments (S1, S2, S3)
…)), A segment loading device that is capable of self-propelling between the tip part. 3. An upper stage side on which a self-propelled segment carrying vehicle (40) can travel in the existing tunnel (T) from a starting shaft or a starting opening portion to a rear portion of a shield machine (10) having an erector (20). A rail (31) and a lower rail (32) are laid in two stages, upper and lower, and the end of both rails (31, 32) has a length that allows the segment carrying vehicle (40) to ride on. A lifting platform (52) provided with a mounting rail (51), and the extension rail (5) is provided depending on the lifting position of the lifting platform (52).
1) A lift truck (50) is provided such that the rear end can be switched and connected to one of the upper rail (31) and the lower rail (32). On the distal end side, the elevating table (5) having a telescopic distal end so as to extend to the distal end of the existing segment (S1, S2, S3.
The lower rail (3) is connected via the extension rail (51) of 2).
Telescopic telescopic rail (3) connected to the tip of 2)
5) A segment carry-in device provided with the above. Wherein said segments carriages (40), the segments carrying device according to any one of claims 1 to 3 without as put thereon are stacked one or more of the new Segment for (S0). 5. The segment carrying truck (40) has a belt conveyor (42) that rotates in the longitudinal direction, and a single ring or a plurality of new segments (S0, S0, S2) are mounted on the belt conveyor (42). S0, S0 ...) can be placed side by side in the tunnel axis direction.
The segment loading device according to claim 1 . 6. The segment carrying vehicle (40) has a turntable (43) at its front end and one ring or a plurality of new segments (S0, S0, S) at its rear end.
..) can be placed side by side in the tunnel axis direction, and a new segment (S0) is fed to the turntable (43) by the rotation of the belt conveyor (42). 4. A conveyor according to claim 1, further comprising an intake conveyor (44) .
The segment loading device according to any one of the above.