JPH0557097U - Segment transfer device - Google Patents

Abstract

(57) [Summary] (Correction) [Construction] A segment is formed by a suspension carriage 10 from a carrier 7'used on a guide rail 6 via wheels 8, 8 ... From a hoist 9 mounted on the carrier 7 '. In order to suspend and transport 1, the multi-joint link pantograph 17 is extended from the transport carriage 7'and is interposed between the holder bracket 14 and the swaying vibration in the front-back direction and the lateral direction during traveling. Is capable of damping or restraining by friction and rigidity of the fitting portion of the multi-joint link pantograph 17 and the pin 20. [Effect] In the transportation process of the large size / heavy weight segment 1, even if rocking vibration is generated in the front / rear / left / right due to inertial force and acceleration when the guide rail 6 is bent, rising or stopping, the vibration is suppressed or Since it is constrained and transported while maintaining the suspended posture state at the time of initial setting, it has good workability, and there is no interference with various equipment in the narrow excavation tunnel,
Work can be performed within a predetermined period, and safety and cost reduction can be achieved.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The disclosed technology belongs to the technical field of the structure of the transport device of the segment lining the inside of the ground in the shield excavation method used when constructing a tunnel, an underdrain, or the like in the ground.

[0002]

[Prior Art]

 As is well known, social institutions have become extremely complex and expanded in a wide variety of ways, and in particular, communication means, lifelines such as electricity and gas, and information transmission networks have become nationwide networks, and moreover, they are becoming increasingly popular. In Japan, where the area is dense and the land is small, these mechanisms are concentrated and overlap.Therefore, not only new construction but also various constructions for the ground itself are required to expand the existing mechanism. There has been a strict demand for avoiding interference with constructions, yet at the same time, in addition to being safe, while also reducing the economic burden.

Various types of civil engineering techniques have been researched and put into practical use in order to avoid collapse of the ground, leakage of groundwater, etc. when newly constructing or repairing tunnels, underdrains, and various lifelines. However, since various mechanical devices must be carried into a narrow excavation tunnel and the necessary work must be performed efficiently as designed and within a limited construction period, vigorous manual work is essential. There is a neck.

Moreover, it is indispensable that the manual labor of the kind must be safety first, and it is necessary to prevent the occurrence of pollution of the surrounding environment and pollution problems, which causes a labor shortage (manpower shortage). Therefore, improvement of operating efficiency is strongly demanded.

For example, when constructing a tunnel or an underdrain by the muddy water shield method, excavation of the ground at the face of the face is performed by an excavation device, but for the support work such as primary concrete winding on the mountain inner surface of the excavation tunnel, A technique is used in which a predetermined number of segment blocks 1 made of metal such as iron or concrete as shown in Fig. 9 are assembled and lined in a circular cross section. After excavating the cutting face 4 of the natural ground 3 by the device 2, the piece block-shaped segment 1 is carried into the inner surface of the natural ground 3 and assembled into a lining shape to form a cylindrical segment 1 '. As described above, the segment transfer device 5 is used to transfer the piece block-shaped segment 1 loaded from the ground through the shaft in the narrow excavation tunnel to the excavation tunnel behind the face. 6 is mounted on a guide rail 6 extending backward from the shield excavator 2 and is made movable through wheels 8, 8 ... A holder bracket 14 in which a chain, a wire, or a rope 10 is unwound from the hoist 9 mounted on the reel 11 and hung down from a reel 11 and is attached to a hook 12 previously attached to the piece block-shaped segment 1 through a pin 13 The front end of the joint 15 is connected to the joint 15 and is hung, and the operator pushes the carriage 7 by a manual pushing method or the like to carry it in.

[0006]

[Problems to be solved by the device]

 Therefore, the hook 12 attached to the piece block-shaped segment 1 is arranged so as to come to the center of gravity thereof, but there is a case where the hook 12 is not attached to the center of gravity of the piece block-shaped segment 1 due to the structure, so that the hook 12 is always shown in FIG. As shown in FIG. 7, the hanging posture by the chain, the wire, or the rope 10 is not always balanced as designed, and the laid state of the guide rail 6 is not a geometric linear liner shape. However, there are also irregularities and bends, and therefore shaking vibrations often occur during transportation.However, since it is a manual work, etc., the posture changes depending on the magnitude of the applied pushing force, and it also rises. The segment block-shaped segment 1 is usually quite large in size and heavy in weight, sometimes several hundreds of kilograms to over 1 ton. In addition to the difficulty that work is difficult to perform due to the occurrence of various accelerations and inertial forces, vibrations are unavoidable, and various construction machinery and equipment are complicatedly set in the narrow excavation tunnel. However, there is a drawback in that it may cause interference in the transportation process, there is a disadvantage that momentum and safety decrease, and there is a negative point that construction efficiency also deteriorates.

In order to deal with this, it is theoretically possible to install a number of control devices on the carrier vehicle or a battery-type drive device to control the speed, but the structure is complicated. However, there is a drawback that the cost becomes high, and maintenance is troublesome.

[0008]

[The purpose of the device]

 The purpose of the invention of this application is in a narrow excavation tunnel with a segment used for shield excavation, which is extremely effectively used in new construction and repair work of various tunnels, culverts, lifelines, etc. based on the above-mentioned conventional technology. This is a technical issue that should solve the problems of transportation, and it is necessary to set the balance posture as well as possible in order to suppress the shaking vibration in the transportation process of the attached segment, avoid the interference with peripheral equipment, and maintain a fixed posture. The objective is to provide an excellent segment transfer device that can be transferred and can be transferred safely and that will benefit the field of application of transfer technology in the civil construction industry.

[0009]

[Means / actions for solving the problems]

 In order to solve the above-mentioned problems, the composition of the invention of this application based on the above-mentioned purpose, which is based on the scope of the above-mentioned utility model registration request, is to be constructed when a new tunnel or underdrain is newly constructed or renovated. In order to line the ground inner surface of the excavation tunnel from the face using the shield excavation method, or the ring-shaped segment inside the primary rolled concrete against the ground, a carriage is installed on the guide rail provided in the excavation tunnel. The chain, or wire or rope from the hoist equipped on the carrier, and the joint is attached to the hook provided at the center of gravity of the unit segment that is downwardly extended and conveyed through the reel. The segments are connected to suspend the segment in a suspended state, and at the same time, the pantographs of the multi-joint link extending from the transport carriage cross each other in the downward direction. When the segment is extended along the surface and the transport carriage is pushed along the guide rail, even if the segment is swaying or vibrating due to unevenness or bending of the guide rail, or acceleration at the time of rising or stopping, It is restrained by the pantograph of the multi-joint link and does not shake and vibrate, and it is reliably transported along the guide rail, it is safe and does not interfere with peripheral equipment, and there is no problem with the durability of the segment transport device. It is a technical measure to ensure that there is no such thing.

[0010]

【Example】

 Next, an embodiment of the invention of this application will be described below with reference to FIGS. 1 to 5.

It is to be noted that the same mode parts as those in the drawings after FIG. 6 will be explained using the same reference numerals.

The illustrated embodiment is a mode in which the shield excavation method is used when constructing a tunnel or an underdrain in the ground 3, and in the embodiments shown in FIGS. 1 and 2, 16 is a segment of the idea of this application. It is a carrier device, and after carrying out excavation on the face 4 of the ground 3 by the shield excavator 2 shown in FIG. 8, the piece block-shaped unit segment 1 is carried into the excavation tunnel and assembled into a predetermined ring shape. It is formed on the inner surface of the ground or on the inner side of the primary rolled concrete in the same manner as in the conventional manner. It is manually pushed by the wheels 8, 8 ... A carrier truck 7'is mounted, and a chain, a wire, or a hanging rope 10 such as a rope is extended from a hoist 9 mounted on the carrier truck 7'through a reel 11, The structure in which the tip is connected to a holder bracket 14 attached via a pin 13 to a hook 12 provided in advance on the block-shaped segment 1 so that it can be raised and lowered is similar to the conventional mode shown in FIGS. 6 and 7. is there.

Therefore, in the invention of this application, a pair of multi-joint link pantographs 17, 17 are provided on both sides of the carriage 7 ′ so as to freely bend and extend via the pins 20, 20 ,. The lower end of the pin is pivotally supported by the holder bracket 14.

Therefore, the multi-joint link pantographs 17 are provided along parallel planes in the up-and-down direction, and the swing and vibration in the front-rear and left-right directions are restrained similarly to a general multi-joint link pantograph. Is being done.

[0015] Therefore, there is no risk of an accident or the like occurring while the vehicle is traveling, without interfering with other transport devices provided in the narrow excavation tunnel, and the initial suspended posture is maintained and smoothed. Is to be transported to.

In the above-mentioned configuration, when the piece block-shaped segment 1 is set in the ground after face excavation or inside the primary rolled concrete in a ring shape, the piece block-shaped segment 1 is fixed as much as possible. A chain or a wire fed from the hoist 9 is connected to a holder bracket 14 provided via a pin 13 with respect to a hook 12 provided in advance, and the tip of a hanging rope 10 such as a rope is connected.

Of course, at this stage, the multi-joint link pantograph 17 is arranged between the holder bracket 14 and the carriage 7 '.

Then, with the piece block-shaped segment 1 suspended, the carrier vehicle 7 ′ is manually pushed to carry it along the guide rail 6 into the shield excavator 2.

During this time, the guide carriage 6 is subject to longitudinal irregularities and bending, which causes periodic and aperiodic vibrations to the carriage 7 ', and inertial force and acceleration are generated at the time of starting and stopping, Regarding the shaking vibration in this case, the multi-joint link pantograph 17 bends and stretches, and the shaking vibration in the front-rear and left-right directions is restrained. Therefore, the segment 1 is transported while being maintained in the initially suspended posture on the transport carriage 7 '. The operator does not need to take any precautions or work to avoid the interference with the surrounding equipment by merely pushing the carrier 7 ', and carry the segment 1 into the predetermined position. Perform the building lining work for segment 1'by returning to the initial set work by performing the reverse operation.

Of course, since the work is merely a pushing work, the work efficiency is good and the work can be performed safely.

Further, as in the embodiment shown in FIG. 3, a dashpot 18 and a vibration absorbing spring 19 are provided in the multi-joint link 17, or in the longitudinal direction of the multi-joint link 17 as in the embodiment shown in FIG. It is also possible to further improve the damping effect by providing coil springs 19 ', 19' on the.

It is needless to say that the embodiment of the invention of this application is not limited to each of the above-mentioned embodiments, and for example, it is provided along the upper and lower surfaces of the pantograph which cross each other in the front-rear direction and the left-right direction downward. Various modes such as the above can be adopted.

Further, in terms of design change, a self-propelled drive device can be provided in the carrier car, and a cushion spring can be provided in the carrier car.

Since the construction to be applied can be applied to construction methods other than the shield excavation method, not only the piece block-shaped segment but also the ring-shaped semi-finished product can be used as the segment. Of course you can do it.

[0025]

[Effect of the device]

 As described above, according to the invention of this application, when the segment is lined on the inner surface of the ground or the inner side of the primary rolled concrete in the tunnel for excavating the face using the shield excavation method, In a shield transfer device for carrying in large size and heavy weight of a chain, a chain, a wire, or a hanging rope such as a rope is connected to a holder bracket connected to a hook provided in advance for the segment and hung. In the device for transporting by the transport carriage, since the pantograph of the multi-joint link is provided on the holder bracket from the transport carriage, friction between the pantograph 7 of the multi-joint link and the pin, and Due to the rigidity, the guide rail may be bent or uneven during transportation, and further, the inertial force or acceleration at the start may cause the rocking in the front-back or left-right direction. The motion is damped or restrained, so the segment balance is not disturbed during transportation, and it does not interfere with various equipment machinery set in the narrow excavation tunnel, thus ensuring the loading work. It is carried out and has an excellent effect that it has no influence on the construction work.

Further, as long as the work is carried out safely, there is no fear of construction delay, and as a result the work efficiency is improved and the cost is reduced.

Further, since lateral vibrations such as front, rear, left and right are restrained, the width of the guide rail does not need to be large as a result, and the segment has the size of the full width in a narrow excavation tunnel. There is also a merit that it is easier to carry out the shield excavation itself.

Since the multi-joint link pantograph is extended to the transport carriage, the rigidity of the transport carriage itself can be reinforced, and the durability of the device can be improved.

Further, since the multi-joint link pantograph itself has no complicated structure, there is no need for maintenance and inspection, and there is also an advantage that the life can be sufficiently lengthened.

Further, by interposing a vibration damper or a vibration absorbing spring on the multi-joint link, there is an effect that it is possible to prevent an adverse effect due to the vibration of a hoist or the like mounted on the carrier truck and to maintain the construction.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the invention of this application.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of another embodiment.

FIG. 4 is a front view of the same.

FIG. 5 is a side view of another embodiment.

FIG. 6 is a side view of a segment transfer device according to the prior art.

FIG. 7 is a front view of the same.

FIG. 8 is a schematic partial vertical side view of shield excavation.

FIG. 9 is a perspective view of a die block-shaped segment.

[Explanation of symbols]

 6 Guide rail 7'Transport truck 9 Hoist 10 Suspended rope 1 Segment 12 Hook 14 Holder bracket 16 Segment transport device 17 Multi-joint link pantograph

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Endo, 14 Arakicho, Shinjuku-ku, Tokyo Inside Shinryo Heavy Machinery Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A segment transfer device in which a hoist is provided on a carrier truck traveling along a guide rail, and a holder bracket engaging with a hook of a segment is attached to a lower end of a hanging rope from the hoist. A segment transfer device in which a pantograph having a multi-joint link is arranged between a carriage and a holder bracket. 2. The segment transfer device according to claim 1, wherein the pantographs are arranged along both upper and lower surfaces which face each other and intersect each other.