JP2511229Y2 - Segment holding device - Google Patents

Description

[Detailed description of the device]

[0001]

TECHNICAL FIELD The disclosed technology belongs to the technical field of the structure of a device used for assembly and construction when constructing a tunnel, an underdrain, or the like by a muddy water shield method or the like.

[0002]

2. Description of the Related Art As is well known, the rise of civil society and industrial society greatly depends on the development of science and technology, and civil engineering construction work is indispensable for facilities such as various structures.

In particular, compared with above-ground structures, tunnels, underdrains, and underground civil engineering work on the foundations of above-ground structures are extremely important. Recently, not only constructions but also traffic, electricity, water, electricity. When constructing so-called lifelines such as gas, underground construction such as underground and semi-underground is indispensable. At that time, construction is often extremely difficult and dangerous due to interference with existing structures. As a result, a large amount of social capital is put in, resulting in a significant increase in cost, and there are various obstacles that must be addressed in harmony with the recent environmental destruction and pollution problems.

In order to deal with this, various technical researches and developments have been made, and new construction systems have come into practical use.

[0005] For example, a shield method has been developed for new construction such as tunnel or underdrain in the ground, or for construction such as repair work, and excavation of a face by shield excavation, and
The so-called shield digging method, in which the primary concrete is wound up against the natural ground and the metal or concrete segment as the supporting work is lined from the inside to the primary rolled up concrete, has been widely used. .

In this case, the lining of the segment may be performed directly on the ground, and the segment and the ground may be
Alternatively, a technique of injecting a filler between the primary rolled concrete and preventing the collapse of the ground and the leakage of groundwater is also used.

For example, in the case of tunnel construction, the seed segment may be a tubular segment 1 as shown in FIG. 6 or a piece block segment 1'as shown in FIG. However, as mentioned above, its strength,
In order to maintain sufficient rigidity over time, it is made of steel or concrete, has a large size with a predetermined shape, and weighs as much as 1 ton.

Therefore, in the ordinary shield excavation work or the like, the shield excavator is provided with a carrying-in mechanism and an assembling mechanism for the segments 1 and 1'at the rear side, and the segments are assembled between the ground or primary rolled concrete. It is designed to be lined.

[0009]

Therefore, the loading and assembling of the seed-cylindrical segment 1 and the piece block-shaped segment 1'is carried out in an excavation tunnel in a limited and narrow space,
Therefore, in order to improve the workability of the large-sized and bulky heavy-duty segments 1 and 1'because the workability is inherently poor and there is a risk, they are fixed to each other for centering of mutual positioning and to the ground. Segments attached to the shield excavating device by attaching a hanging metal fitting 2 such as an eyebolt integrally by screwing with a screw portion 2'as shown in Fig. 5 for general purpose such as injection hole for backfilling and backfilling. A predetermined work is carried out by suspending the clevis 4 on the frame 3 of the holding device.

That is, as shown in FIGS. 4 and 5, a pair of plate-shaped clevis 4, 4 and eyebolt 2 are attached to a frame 3 of a segment holding device having an elevating mechanism attached to the rear portion of a shield excavator (not shown). They are integrally fixed in a downwardly extending shape at intervals so that they can be inserted, and pin holes 5 and 5 are provided at their tip portions.
Are pierced correspondingly coaxially, and assembled to the cylindrical segment 1 and the piece block segment 1 ',
At the time of work such as carrying in, the clevis 4, 4 is externally inserted into the eyebolt 2 of the suspending metal fitting screwed to the tubular segment 1 or the piece block-shaped segment 1'in advance, and the pin hole 5 provided in the eyebolt 2 is inserted. 'And the pin holes 5, 5 of the clevis 4, 4 are aligned, and the male screw 6 is pre-threaded on the tip to insert the hanger pin 7 into these pin holes 5, 5, 5', and the male screw 6 at the tip. The nut 8 is screwed to the stopper to prevent the nut from coming off, and is suspended from the clevis 4 and 4 on the frame 3 of the segment holding device to perform a predetermined work.

Regarding such a technique, Japanese Unexamined Patent Application Publication No. Sho 62-62
It is basically disclosed in Japanese Patent Laid-Open No. 10399.

Therefore, in such a conventional mode, the cylindrical segment 1 and the piece block segment 1 '
At the time of suspending and attaching the segment holding device to the frame 3, the eyebolt 2 is inserted between the clevis 4 and 4, the pin holes 5, 5 and 5 ′ are positioned, and the posture between them is maintained, and the hanger is also added. Pin hole 5 for pin 7
Insertion into 5, 5'and screwing of the nut 8 are manually performed, so that there is a drawback that the work is extremely severe work, inefficient, and dangerous.
In addition, an unreasonable work posture is forced inside the digging gallery in a narrow space, and physical and mental pains are caused by maintaining that certain posture, which causes a decrease in work efficiency and danger. It was also a vicious circle.

[0013]

OBJECT OF THE INVENTION The purpose of the invention of this application is to solve the problem of work involved in carrying in a posture of carrying in and assembling a bulky and heavy segment due to underground construction such as a tunnel or an underdrain based on the above-mentioned prior art. The human task is reduced as much as possible, and further, without any physical or mental pain, the holding work is performed reliably and safely, and the cost can be reduced. It is intended to provide an excellent segment holding device which is useful in the field of supporting technology in the construction industry by performing shield excavation as designed.

[0014]

[Means and Actions for Solving the Problems] In order to solve the above-mentioned problems, the structure of the invention of the present application, which is based on the above-mentioned utility model registration claim, is intended to solve the above-mentioned problems by using a tunnel or an underdrain. When performing construction work such as, excavating the face of the ground by shield excavation and directly on the ground, or on the inside where the primary roll-up concrete is placed, with a large size of a predetermined shape, large weight In order to line the segment, the segment is carried into the excavation tunnel in a narrow space, and when assembled, a pair of plate-shaped clevis parallel to the frame of the segment holding device attached to the shield machine is integrally formed. A guide sleeve for the hanger pin is provided on at least one clevis in the downward direction, and a pin hole is provided, and at the same time, forward / backward drive for the hanger pin. The hydraulic type cylinder is integrally provided on the frame by bolting or the like, and the rod of the cylinder is integrally connected to the hanger pin previously inserted in the guide sleeve by a plate-shaped bracket. Thus, when suspending the clevis for holding the segment, suspending metal fittings such as eye bolts, which are provided by being screwed into the segment in advance, are inserted into the pair of clevis, and the guide sleeve of one clevis is immediately preliminarily inserted. The hanger pin that was inserted in the cylinder is inserted into the pin hole of the eyebolt by the operation of the cylinder, and the hanger pin is prevented from coming off by maintaining the stopped posture of the cylinder, and the suspended state of the segment is surely maintained. We will be able to perform predetermined work safely and accurately with high efficiency.
After the completion of a predetermined work, the cylinder is extended to disengage the hanger pin from the clevis and the segment so that the hanger pin can be used for the next segment loading and assembling work.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the invention of this application will be described below with reference to FIGS.

It should be noted that the same mode parts as those in the drawings starting from FIG. 4 will be explained using the same reference numerals.

The illustrated embodiment is a mode of a segment holding device 9 used for constructing a tunnel in a predetermined ground by a shield excavation method, and as shown in FIG. 6 and 7, which are integrally attached, carry in the metal-made or concrete-made cylindrical segment 1 or piece block-shaped segment 1'into the excavation tunnel, and assembly,
Further, it is a mode used for the lining inside the ground or the primary rolled concrete, and the hydraulic cylinder 11 is linked to a predetermined hydraulic drive unit 12 and, as will be described below, the clevis 4, 4'provides the segment 1 or The piece block-shaped segment 1'is provided for a predetermined work in a suspended posture.

In the invention of this application, FIG.
As shown in FIG. 2, on the frame 3 of the segment holding device 9, a pair of generally inverted trapezoidal front view and thick clevis 4, 4 ′ are integrally fixed and extend downward. Has a pin hole 5 into which a hanger pin 7'is inserted, and the other clevis 4'has a pin hole 5 '' of the same diameter coaxial with the pin hole 5 and having a set length. The guide sleeve 7 '' provided is integrally formed, and both clevis 4,
The plate-shaped portions of 4'are in a parallel state.

A hydraulic cylinder 11 is provided inside the bifurcated base of each clevis 4, 4'and is fixed to the frame 3 via bolts 11 ', 11' ... A male screw 14 is engraved on the tip of the rod 13, and is screwed onto a female screw 16 engraved on a plate-shaped bracket 15 extending in a perpendicular position to the rod 13 and the tip of the hanger pin 7 '. The lock nut 17 is inserted and the bracket 15 and the rod 13 are integrally connected.

The tip end of the bracket 15 is a base end of the hanger pin 7'which is previously inserted into the pin hole 5 "of the guide sleeve 7" of the one clevis 4'when the segment holding device 9 is assembled. A bolt hole 15 'for screwing the male screw 18 of the bolt 19 screwed into the portion is engraved.

Therefore, the bolt 19 is attached to the bracket 1.
By fixing the hanger pin 7'to the hanger pin 7'through a bolt hole 15 'at the tip of the bracket 5, the hanger pin 7'is fixed to the bracket 15'.
The guide sleeve 7 ″ is integrally moved forward and backward by being connected to the rod 13 of the hydraulic cylinder 11 via the, and is positioned and inserted coaxially in the pin hole 5 of the other clevis 4 in the advanced posture. .

Numeral 2 is an eyebolt as a hanging metal fitting, which is fixed by being screwed into the segment 1, 1'through its threaded portion 2'and is a pair of clevis 4,4 '.
It is designed to be inserted into the gaps facing each other.

Therefore, in the posture in which the hanger pin 7'is inserted into the pin hole 5 "of the guide sleeve 7" of the clevis 4 ', the hanger pin 7'is concentric with the pin hole 5 of the other clevis 4. It will be.

In the above structure, the segment holding device 9
To the shield machine 8'side segment 1,1 '
When assembling and assembling, the pair of clevis 4,4 'integrally extended to the frame 3 and the clevis 4'on one side of the clevis 4'integrally attached in the pin hole 5 "of the guide sleeve 7" are appropriately preliminarily prepared. 7'is inserted and the frame 3
Are integrally fixed to each other via bolts 11 ', 11', and are integrally connected to a male thread 14 of a rod 13 of a hydraulic cylinder 11 connected to a hydraulic drive source 12 by a lock nut 17 via a female thread 16 of a bracket 15. Hanger pin 7'with bolt 19 through bolt hole 15 'at its tip
Are integrally connected, and the hanger pin 7 ′ is connected to the hydraulic cylinder 11
To move back and forth freely.

When carrying in and assembling the segments 1, 1 ', the segment holding device 9 is moved closer to the end position of the segments 1, 1', and the hydraulic cylinder 11 is moved.
As shown by the chain double-dashed line in FIG. 1, with the bracket 15 open, the hanger pin 7'is not installed between the clevis 4 and 4 ', and the segment 1 and clevis 4 and 4'are Insert the eyebolt 2 attached to 1 '.

In this case, as shown in FIG.
Since the base end portion of the is made circular, a kind of automatic guide is used for relative insertion into the gap portion of the clevis 4, 4 of the eyebolt 2 and the eyebolt 2 is smoothly inserted.

Then, the operator merely visually operates the elevating mechanism of the segment holding device 9 to visually position the pin holes 5'of the eyebolt 2 with respect to the clevis 4,4 'pin holes 5,5 ". .

Therefore, the relative insertion work between the eyebolt 2 and the clevis 4, 4 by the manual work of the operator involves almost no physical work, is performed smoothly, and causes no trouble or danger.

The eyebolts 2 are clevis 4, 4 '.
The hydraulic cylinder 11 is contracted by the hydraulic drive unit 12 and the rod 13 is pulled into the hydraulic cylinder 11 in a state where the hydraulic cylinder 11 is inserted into the gap (which is very easy to automatically detect by a limit switch or the like). Then, the hanger pin 7 ′ moves through the bracket 15 in the pin hole 5 ″ of the guide sleeve 7 ″, and the clevis 4,
4 ', the pin holes 5'of the eyebolt 2 positioned and set in those pin holes 5, 5''are inserted,
The hanger pin 7'is automatically inserted into the pin hole 5 of the clevis 4, and the hanger pin 7'is provided between the pin holes 5,5 'and 5''of the clevis 4 and 4', where the segments 1 and 1'are the segment holding device 9 Suspended by.

As shown in FIG. 1, since the hanger pin 7'is provided with a tapered guide portion at the tip thereof, the hanger pin from the pin hole 5'of the eyebolt 2 to the pin hole 5 of the clevis 4 is formed. 7'Automatic insertion becomes easy. .

Then, the segment holding device 9 is used to assemble the segment 1'and to move the shield excavator 8'into and away from the ground, or to perform lining work on the inner side of the primary roll-up concrete. The hydraulic cylinder 11 is extended through the drive unit 12, and the hanger pin 7'moves through its rod 13 and the bracket 15 to disengage the eyebolt 2 between the clevis 4 and 4'and the next segment 1,1 '. It is used for carrying in and assembling.

Of course, the embodiment of the invention of this application is not limited to the above-mentioned embodiment. For example, the cylinder may be an air cylinder or an electromagnetic cylinder instead of the hydraulic cylinder, or between both clevis of the hanger pin. It is possible to adopt various modes such as the installation of a vehicle, a limit switch for detecting the separated posture, an alarm buzzer, and a light.

Further, in terms of design modification, it goes without saying that various design modifications can be made, such as using hooks instead of eyebolts for the metal fittings of the segments, and increasing the thickness of the clevis instead of the guide sleeve. .

Further, the shield excavation work to which the invention is applied is also applicable to work such as underdrain, and of course, it is also applicable to a segment holding device not integrally attached to the shield excavator, for example, for transportation. That is.

[0035]

[Effects of the Invention] As described above, according to the invention of this application, basically, the ground excavation and the ground excavation are accompanied by the shield excavation that functions extremely effectively for the construction of underground structures such as tunnels, underdrains, and lifelines. In the work of loading and assembling large-sized and heavy-weight segments with a predetermined shape inside the installed primary roll-up concrete, the segments can be hung efficiently and safely as designed to perform the predetermined work. It can be provided, and can exert a remarkable effect on safety and efficiency improvement.

In particular, in a segment holding device for lifting or moving a segment, segment attachment via a hanging metal fitting such as eyebolts to a pair of clevis integrally attached to the frame is a manual work such as muscle work. It is easy to work because it does not require any work, and it is only necessary to position the hanging metal fittings such as eyebolts and the pin holes of the clevis, and it is safe and there is no damage to the device, mechanical parts, etc., shortening the construction period, Moreover, the effect of reducing the cost is achieved.

Thus, in the invention of this application, a cylinder such as a hydraulic cylinder is provided in the mounting frame of the clevis, and a hanger pin for the hanging metal fitting is connected to the advancing / retreating rod through a bracket to connect the hanger pin to one side. The clevis can be moved back and forth through a guide sleeve that extends integrally with the clevis, so that a hanging metal fitting is relatively inserted between the clevis, and then the cylinder is operated and the hanger pin is attached to the clevis. The hanger pin can be accurately and smoothly inserted between the hanging metal fittings, and the excellent effect that the work is extremely easy is achieved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an embodiment of the invention of this application.

FIG. 2 is a front view of the same.

FIG. 3 is a schematic side view of the same.

FIG. 4 is a partial sectional side view of a segment holding device according to the prior art.

FIG. 5 is a partial sectional front view of the same.

FIG. 6 is a perspective view of an aspect of a segment.

FIG. 7 is a perspective view of another embodiment.

[Explanation of symbols]

 3 Frame 4 Clevis 1, 1'Segment 2 Hanging bracket 7'Hanger pin 9 Segment holding device 11 Cylinder 7 "Guide sleeve 15 Bracket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Endo 14 Arakicho Shinjuku-ku, Tokyo Shinryo Heavy Machinery Co., Ltd. (72) Inventor Hiroshi Miyanishi 14 Arakicho Shinjuku-ku Tokyo Shinryo Heavy Machinery Co., Ltd. (56) References JP-A-62-103999 (JP, A) JP-A-2-213600 (JP, A)

Claims (4)

(57) [Scope of utility model registration request] 1. A segment holding device having a pair of clevis fixedly suspended and fixed to a frame, and a hanger pin for suspending a hanging metal fitting inserted between the clevis and provided on a segment, wherein a cylinder is provided on the frame. , above the one of the two clevis provided cast guide sleeve side with respect to the hanger pin segment holding device and an end portion of the hanger pin is coupled via a bracket to the cylinder. 2. The segment holding device according to claim 1, wherein the hanger pin and the cylinder are provided side by side in a parallel posture. 3. The segment holding device according to claim 1, wherein the bracket is formed in a plate shape parallel to the clevis. 4. The segment holding device according to claim 1, wherein the clevis is formed in a substantially trapezoidal shape in a front view and has a large thickness.