JP2022044495A - Support installation equipment for tunnels - Google Patents

Abstract

An object of the present invention is to provide a support installation device for a tunnel that can finely adjust the position of the support along the peripheral wall surface of an excavation shaft (tunnel) without changing its position in the longitudinal direction of the tunnel. A tunnel shoring installation device 100 includes a bogie and a pair of erectors for shoring installation that can swing in the width direction of the bogie and in the vertical direction, respectively, in front of the bogie. Each erector includes a telescoping erector boom 31, a gripping mechanism 32 provided at the tip of the erector and capable of gripping the shoring 1, and a gripping mechanism 32 provided between the erector boom 31 and the gripping mechanism 32 on the peripheral wall of the excavation shaft. It includes a moving mechanism 33 capable of moving the gripping mechanism 32 in a posture of gripping the shoring 1 along Ta in a direction along the tunnel cross section. [Selection diagram] Figure 16

Description

The present invention relates to a support installation device for a tunnel in which a support is installed along the peripheral wall surface of the excavation pit when constructing the tunnel.

In tunnel construction such as mountain tunnels, the so-called NATM method (New Austrian Tunneling Method) is often adopted. In this NATM method, the ground is excavated by blasting or machinery to form a pit (excavation pit), and an arch-shaped support made of steel H-shaped steel or the like is installed (built-in) near the face surface. Concrete is repeatedly sprayed onto the peripheral wall surface (inner peripheral surface) of the excavation pit. The support work is generally divided into two parts on the left and right, and the left support work and the right support work are connected to each other to form one support work. Then, the support works are sequentially installed along the peripheral wall surface of the excavation pit in the vicinity of the face surface by using the support work installation device for the tunnel.

As an example of such a support installation device for a tunnel, the device disclosed in Patent Document 1 is known. The device disclosed in Patent Document 1 has a work vehicle (hereinafter referred to as a trolley) and a pair of left and right electors that grip and move the support (left support, right support), respectively. There is. Each elector is expandable and contractible, and its base end portion is supported by the bogie so that it can turn in the width direction and the up and down direction of the bogie. Specifically, each erector is between a telescopic erector boom that can turn in the width direction and the vertical direction of the trolley, a hand that is provided at the tip of the erector and can grip a support, and a tip and a hand of the erector boom. It has a turning mechanism provided in. In this turning mechanism, when the swing jack is driven, the hand turns in the width direction of the bogie, and when the tilt motor is driven, the hand turns in the vertical direction.

Japanese Unexamined Patent Publication No. 11-229796

By the way, for example, when installing a support, it may be desired to move the support in the vertical direction or in the width direction of the excavation pit. Here, in a state where the telescopic elector of the conventional device disclosed in Patent Document 1 grips the support and the support is moved along the peripheral wall surface of the excavation pit (tunnel) in the vicinity of the face surface. , Elekta is tilted diagonally upward and outward in the width direction of the trolley with respect to the tunnel centerline (specifically, the centerline that passes through the center in the width direction of the excavation pit and extends in the digging direction of the excavation pit). .. Therefore, the support work can be moved in the vertical direction or the width direction of the excavation pit by expanding and contracting the elector as necessary in a tilted state.

However, in the device disclosed in Patent Document 1, if an attempt is made to move the support in the vertical direction or the width direction only by expanding and contracting the elector, the support works in the excavation direction (tunnel front-back direction) during this movement. ) Will also move, so some ingenuity may be required.

Therefore, the present invention has been made by paying attention to such an actual situation, and the position of the support work along the peripheral wall surface of the excavation pit (tunnel) can be finely adjusted without changing the position in the front-rear direction of the tunnel. The purpose is to provide a support installation device for various tunnels.

In response to the above problems, according to one aspect of the present invention, a support for a tunnel having a bogie and a pair of electors for installing a support that can swing in the width direction and the vertical direction of the bogie in front of the bogie, respectively. Construction installation equipment is provided. Each of the pair of erectors is provided between a telescopic erector boom, a gripping mechanism provided at the tip of the erector capable of gripping a support, and between the erector boom and the gripping mechanism, and is provided in a tunnel. Includes a moving mechanism capable of moving the gripping mechanism in a posture of gripping the support along the peripheral wall surface in a direction along the cross section of the tunnel.

According to the support installation device for a tunnel according to the present invention, in each elector of a pair of electors, the gripping mechanism in a posture of gripping the support along the peripheral wall surface of the tunnel includes the elector boom and the gripping mechanism. It can be moved in the direction along the cross section of the tunnel by the moving mechanism provided between the tunnels. Therefore, the support along the peripheral wall surface of the excavation pit (tunnel) can be moved in the direction along the cross section of the tunnel without changing the position of the support in the front-rear direction of the tunnel by the moving mechanism.

In this way, it is possible to provide a support installation device for a tunnel that can finely adjust the position of the support along the peripheral wall surface of the excavation pit (tunnel) without changing the position in the front-rear direction of the tunnel.

It is a side view of the support installation device for a tunnel which concerns on this embodiment. It is a cross-sectional view of a tunnel constructed by using the above-mentioned support installation device. It is a partially enlarged top view of the said support installation device. It is a partially enlarged side view of the said support installation device. It is a partial perspective view of an assembly including a pair of electors, a substrate, and a substrate drive mechanism of the support installation device. It is a top view of the main part of the said assembly. It is a side view of the main part of the said assembly. It is a conceptual diagram for demonstrating the operation of the main part of the said assembly. It is a perspective view of the pair of Elekta catching arms. It is a perspective view seen from another angle of the said catching arm. It is a front view of the said catching arm. It is a top view of the above catching arm. It is a side view of the said catching arm. It is a conceptual diagram for demonstrating the internal structure of the main part of the catching arm. It is a conceptual diagram for demonstrating the operation of the said support installation apparatus. It is a partially enlarged view of FIG. It is another conceptual diagram for demonstrating the operation of the said support installation device. It is a partially enlarged view of FIG. It is a perspective view for demonstrating the modification of the main part of the assembly of the said pair of electors, a substrate and a substrate drive mechanism. FIG. 19 is a top view of a main part of the assembly shown in FIG. It is a perspective view for demonstrating another modification of the main part of the assembly of the said pair of electors, a substrate and a substrate drive mechanism. FIG. 21 is a top view of a main part of the assembly shown in FIG. 21.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a support installation device 100 for a tunnel according to an embodiment of the present invention, and shows a case where it is applied to the construction of a support structure for a mountain tunnel. FIG. 2 is a tunnel cross-sectional view of a tunnel constructed by using the support installation device 100, and is shown in a cross section at the position taken along the line AA shown in FIG. Note that FIG. 1 shows an example of a state in which the support installation device 100 is installed in front of the face surface W. Further, in the present embodiment, left and right, up and down, and front and back are defined while viewed toward the face surface W.

[tunnel]
First, a tunnel constructed by using the support installation device 100 shown in FIG. 1 will be described.

The tunnel of the present embodiment is a mountain tunnel, and is constructed by, for example, the NATM method. The excavation pit T, which is the main part of the tunnel, is formed by excavating the ground G with a breaker or the like.

As shown in FIG. 2, in the present embodiment, the top of the excavation pit T is formed in an arch shape (substantially a semicircle). Further, as shown in FIG. 1, a support 1 (steel support material) made of, for example, steel H-shaped steel is provided along the top and left and right sides of the peripheral wall surface Ta of the excavation pit T (tunnel). It is provided at a predetermined interval in the excavation direction of T (direction in front of and behind the tunnel). The support 1 is formed in an arch shape curved so as to extend in the circumferential direction of the peripheral wall surface Ta according to the cross-sectional shape (see FIG. 2) of the cross section orthogonal to the excavation direction of the excavation pit T (that is, the cross section of the tunnel). ing. The support 1 is divided into two parts on the left and right, and one support is provided by connecting the left support 1L for the left side of the peripheral wall Ta and the right support 1R for the right side of the peripheral wall Ta to each other. Work 1 is configured.

Concrete is sprayed on the peripheral wall surface Ta of the excavation pit T. The peripheral wall surface Ta is primarily supported by the support work 1 and the shotcrete C, which is the concrete sprayed on the peripheral wall surface Ta. The shotcrete C is sprayed over the entire circumference of the top and left and right sides of the peripheral wall surface Ta so as to fill the space between the adjacent support works 1 and 1 and the space between the support works 1 and the peripheral wall surface Ta. The construction of the shotcrete C is performed between the existing support 1 and the newly installed support 1 every time the support 1 is newly installed. Further, although not shown, a plurality of lock bolts penetrate the shotcrete C from the inside of the excavation pit T at a position separated in the circumferential direction of the peripheral wall surface Ta between the adjacent support works 1, 1 and the ground. It is cast to reach G. Construction of the support structure by the primary lining (support) with the support 1 and the shotcrete C and the placement of the lock bolt was repeated, and then, although not shown, the secondary cover with concrete from the inside of the spray concrete C. By constructing, the tunnel is completed.

[Outline configuration of support installation equipment]
Next, the support installation device 100 will be described.

The support work installation device 100 is a device for sequentially installing and building the support work 1 in the vicinity of the face surface W. The support 1 (left support 1L, right support 1R) is sequentially installed by the support installation device 100 along the peripheral wall surface Ta in the vicinity of the face surface W.

The support installation device 100 includes a bogie 2 that can travel freely, and a pair of left and right electors 3 and 3 for installing support that can swing in the width direction and the vertical direction of the bogie in front of the bogie 2, respectively. Has been done.

The bogie 2 is a work vehicle that can travel freely and constitutes a main body of the device. The bogie 2 has a vehicle body base portion 21 made of a steel member constituting the base of the bogie 2 (working vehicle).

Wheels 22 are attached to the front end side portion and the rear end side portion on both sides of the bogie 2 (specifically, the vehicle body base portion 21) in the bogie width direction (left-right direction). The carriage 2 is configured to be freely travelable on the bottom surface Tb of the excavation pit T by the wheels 22.

Outriggers 23 for stabilizing the bogie 2 are provided at each of the four corners of the bogie 2 (body base portion 21). The outrigger 23 extends downward in a state of projecting outward in the width direction of the bogie and touches the bottom surface Tb, so that the bogie 2 (vehicle body base portion 21) is stably installed on the bottom surface Tb. On the vehicle body base portion 21, an operation unit 24 for operating various devices such as a drive source for the wheels 22 and hydraulic devices for the pair of electors 3 and 3 and the entire device is provided.

3 and 4 are partially enlarged views including a pair of electors 3 and 3 of the support installation device 100, FIG. 3 is a partially enlarged view seen from above, and FIG. 4 is a partially enlarged view seen from the left. be.

The pair of electors 3 and 3 grip the support 1 (left support 1L, right support 1R), move it near the face surface W, and install the support 1 at a predetermined position and direction (posture). It is for making you. The pair of electors 3 and 3 project to the front of the bogie 2 and are arranged so as to be spaced apart from each other on the left and right (in the width direction of the bogie).

When the left and right sides of each of the pair of erectors 3 and 3 are distinguished, the left side is referred to as a left erector 3L and the right side is referred to as a right erector 3R. The left erector 3L and the right erector 3R have the same structure as each other except that they are symmetrical.

Each erector 3 includes a telescopic erector boom 31 provided so as to project in front of the trolley 2, and a catching arm 32A.

The erector boom 31 is configured to be rotatable in the width direction of the trolley and in the vertical direction with the portion on the trolley 2 side as a fulcrum. The erecta boom 31 is connected to a swivel boom 311 which is connected to a substrate front end surface 41 of a substrate 4 which will be described later so as to be able to swing (swivel) in the width direction of the carriage, and to a swivel boom 311 which can swing (undulate) in the vertical direction. It has an undulating boom 312 and a tilt boom 313 connected to the tip of the undulating boom 312 so as to be able to swing (tilt) in the vertical direction. The erecta boom 31 includes a boom swivel cylinder 314 for swiveling operation of the swivel boom 311, a boom undulating cylinder 315 for undulating operation of the undulating boom 312, and a boom tilt cylinder 316 for tilting operation of the tilt boom 313. Further, the portion on the tip end side of the undulating boom 312 is formed in a telescope shape, and is configured to be expandable and contractible by the boom telescopic cylinder 317. Each cylinder (314, 315, 316, 317) is composed of, for example, a hydraulic cylinder that can be expanded and contracted by hydraulic pressure.

The catching arm 32A is attached to the tip of the elector boom 31. The catching arm 32A includes a gripping mechanism 32 capable of gripping the support 1, and has a function of mainly gripping the support 1 (left support 1L, right support 1R). The gripping mechanism 32 is located at the tip of the catching arm 32A. That is, the gripping mechanism 32 is provided at the tip of the elector 3. The detailed structure of the catching arm 32A including the gripping mechanism 32 will be described in detail later.

[Detailed structure of support installation equipment]
Here, the support installation device 100 further includes a base 4 and a base drive mechanism 5, and is configured so that the overall position and orientation of the pair of electors 3 and 3 can be adjusted.

5 to 7 are views for explaining an assembly including a pair of electors 3, 3 and a substrate 4, and a substrate driving mechanism 5. 5 is a partial perspective view of the assembly, FIG. 6 is a top view of the main part of the assembly, and FIG. 7 is a side view of the main part of the assembly.

As shown in FIG. 5, the substrate 4 supports each base end portion of the pair of electors 3 and 3 on the carriage 2 side. The substrate 4 is made of a steel member, and has a substrate front end surface 41 to which each base end portion of the pair of electors 3 and 3 on the carriage side is connected. The substrate 4 is formed in a substantially plate shape as a whole, and its back surface is reinforced with ribs. The substrate 4 is connected (connected) to the front end portion of the bogie 2, specifically, the portion on the front end side (face surface W side) of the upper surface of the vehicle body base portion 21 via the substrate drive mechanism 5. The front end surface 41 of the substrate faces the face surface W side, and is formed in a substantially rectangular shape in a plan view viewed from the face surface W side.

As shown in FIGS. 3 and 6, the pair of electors 3 and 3 pass through the center of the front end surface 41 of the substrate in the width direction and sandwich the substrate center line X2 perpendicular to the front end surface 41 of the substrate. Therefore, they are arranged on the front end surface 41 of the substrate symmetrically with respect to the center line X2 of the substrate. Therefore, the substrate center line X2 is between the end of the swivel boom 311 which is the base end of the left erector 3L on the trolley 2 side and the end of the swivel boom 311 which is the base end of the right erector 3R on the trolley 2 side. Is located. In FIGS. 3 to 7, the substrate center line X2 passes through the center in the width direction of the carriage and coincides with the device center line X1 extending in the front-rear direction (longitudinal direction) of the carriage 2 in a plan view from above. The substrate 4 is shown.

The substrate drive mechanism 5 has a connecting portion 51 that connects the substrate 4 to the carriage 2, and drives the substrate 4. The substrate drive mechanism 5 further includes a drive unit 52 that drives the substrate 4 to adjust the position and orientation of the substrate 4.

The connecting portion 51 is a connecting member that connects the base 4 to the bogie 2 so that the base 4 can move in the width direction of the bogie and can rotate around an axis Y extending in the vertical direction. In the present embodiment, the connecting portion 51 includes a connecting base portion 511 and a swing arm portion 512.

The connecting base portion 511 is fixed on the bogie 2 (specifically, a portion on the front end side of the upper surface of the vehicle body base portion 21), and is made of a steel block material. The connecting base portion 511 has a base front end surface 511a facing the back surface portion of the substrate 4. The connection base portion 511 is, for example, so that its base front end surface 511a is parallel to the bogie front end surface 21a of the bogie 2 (body base portion 21) and its center in the width direction is located on the device center line X1. It is fixed on the vehicle body base portion 21.

The swing arm portion 512 has a base end portion rotatably connected to the front end portion (base front end surface 511a) of the connecting base portion 511 via a first pin 513 extending in the vertical direction, and a shaft extending in the vertical direction. It has a tip portion swivelably connected to the back surface portion of the substrate 4 via a second pin 514 as Y. The first pin 513 is arranged so as to be located at the center in the width direction (that is, on the device center line X1) on the front end surface 511a of the base. Although not particularly limited, in the present embodiment, the swing arm portions 512 are provided at two upper and lower positions. Therefore, the first pin 513 and the second pin 514 are also provided at two upper and lower positions. The upper swing arm portion 512 and the lower swing arm portion 512 are connected by an arm connecting member 512a extending in the vertical direction, and are configured to be able to turn integrally with each other, so that a more stable turning operation can be performed. Is possible.

The drive unit 52 is a mechanism for moving the substrate 4 in the width direction of the bogie and turning it around the axis Y extending in the vertical direction.

Specifically, in the drive unit 52, the swing arm unit 512 is swiveled around the first pin 513 to move the base 4 in the vehicle width direction, and the base slide first drive unit 521 and the base 4 are moved to the second pin 514. Includes a first drive unit 522 for turning the substrate, which is swiveled around. The first drive unit for sliding the substrate 521 and the first drive unit for turning the substrate 522 are each composed of, for example, a retractable hydraulic cylinder. One end of the first drive portion 521 for the substrate slide is connected to the connecting base portion 511, and the other end thereof is connected to the side portion of the arm connecting member 512a integrally formed with the swing arm portion 512. The first drive unit 522 for turning the substrate is provided at four locations, for example, up, down, left, and right. One end of each substrate turning first drive unit 522 is connected to the front end portion (base front end surface 511a) of the connection base portion 511, and the other end portion is connected to the back surface portion of the substrate 4.

FIG. 8 is a conceptual diagram for explaining the operation of the main part (base drive mechanism 5) of the assembly. FIG. 8A shows a state in which the substrate center line X2 of the substrate 4 coincides with the device center line X1 in a plan view viewed from above (the same state as in FIGS. 3 to 7).

Here, when the substrate 4 is moved in the width direction of the carriage, the first drive unit 521 for the substrate slide is operated as shown in FIG. 8 (b). At this time, the substrate 4 moves (backward) slightly not only in the width direction of the carriage but also in the front-rear direction (longitudinal direction) of the carriage 2 to the rear side. Therefore, the first drive unit 522 for turning the substrate operates in conjunction with the first drive unit 521 for slide of the substrate so as to allow the substrate 4 to move in the front-rear direction. Further, when the substrate 4 is swiveled around the axis Y (second pin 514), the first drive unit 522 for swirling the substrate is operated as shown in FIG. 8 (c). At this time, the two substrate turning first drive units 522, 522 on the left side and the two substrate turning first drive units 522, 522 on the right side are interlocked and operate in opposite directions and with the same stroke. Then, as shown in FIG. 8D, both the movement of the base 4 in the vehicle width direction and the turning of the base 4 around the axis Y (second pin 514) can be performed.

Next, the structure of the catching arm 32A will be described in detail.

9 to 14 are views for explaining the structure of the catching arm 32A, FIG. 9 is a perspective view, FIG. 10 is a perspective view seen from another angle, FIG. 11 is a front view, and FIG. 12 is a top view. 13 is a side view, and FIG. 14 is a conceptual diagram for explaining the internal structure of the main part. The catching arm 32A of the left erector 3L and the catching arm 32A of the right erector 3R have the same structure as each other except that they are symmetrical. 9 to 14, the catching arm 32A of the left elector 3L is shown, and the catching arm 32A of the left elector 3L will be described as an example.

As shown in FIGS. 9 to 13, the catching arm 32A is attached to the tip end portion (tilt boom 313) of the erecta boom 31 so as to be able to swing (turn) in the width direction of the bogie with the base end portion on the erecta boom 31 side as a fulcrum. It is connected. The Elekta 3 has an arm swing cylinder 318 for swinging the catching arm 32A in the width direction of the carriage.

The catching arm 32A includes a gripping mechanism 32 capable of gripping the support 1, and a moving mechanism 33 provided between the elector boom 31 and the gripping mechanism 32 for moving the gripping mechanism 32. .. The moving mechanism 33 also has a function as a connecting member for connecting the elector boom 31 and the gripping mechanism 32.

Specifically, the gripping mechanism 32 includes a gripping portion main body 321 extending in one direction, a first gripping portion 322 and a second gripping portion 323 provided on both sides of the gripping portion main body 321 in the longitudinal direction, and a gripping portion main body. It has an auxiliary grip portion 324 provided in parallel with either one of the first grip portion 322 and the second grip portion 323 in the 321 (the first grip portion 322 in the figure). The first grip portion 322 is arranged on the outside in the vehicle width direction (left side in the left erector 3L, right side in the right erector 3R).

The grip portion main body 321 is a member that supports the first grip portion 322 and the second grip portion 323. The grip portion main body 321 is parallel to the support 1 in a state where each grip 322 and 323 grips the support 1 (left support 1L, right support 1R) (see FIGS. 11 and 12). ..

Each grip portion 322, 323 has the same structure. Each grip portion 322, 323 has two grip claws 34a, 34b facing each other, and the two grip claws 34a, 34b are opened and closed by the expansion and contraction of the hydraulic opening / closing cylinder provided inside, so that the support work 1 (Left support 1L, right support 1R) can be gripped. One of the two gripping claws 34a and 34b (the gripping claw 34a in the figure) is located and fixed at the tip of the elector 3, and the other of the two gripping claws 34a and 34b (the gripping claw 34b in the figure). Is configured to move in a direction toward and away from the one (grasping claw 34a in the figure).

The auxiliary grip portion 324 is connected to the side portion of the first grip portion 322 in this embodiment. The auxiliary grip portion 324 has two grip claws 35a and 35b, and is configured to open and close the two grip claws 35a and 35b by expanding and contracting the opening / closing cylinder of the first grip portion 322. The two gripping claws 35a and 35b project, for example, to the side of the first gripping portion 322, and can supplementarily grip the support work 1 in a portion having a relatively small radius of curvature in the support work 1.

The gripping mechanism 32 is a left-right moving shaft of the moving mechanism 33, which will be described later, with a portion on one end side (second gripping portion 323 side in the figure) of the gripping portion main body 321 which is a connection point with the moving mechanism 33 as a fulcrum. It is connected to the left-right moving shaft portion 331b (grip mechanism connecting portion 331b2) so as to be tiltable with respect to the portion 331b. The catching arm 32A has a tilting cylinder 36 for tilting the gripping mechanism 32.

Here, for example, when gripping the left support 1L by the gripping mechanism 32 of the left elector 3L, first, if necessary, each cylinder (see FIGS. 3 and 4, boom swivel cylinder 314, boom undulating cylinder 315, The boom tilt cylinder 316, boom telescopic cylinder 317, arm swing cylinder 318, and tilt cylinder 36) are operated so that the left elector 3L has a length and orientation that allows the left support 1L to be gripped. The same applies when the gripping mechanism 32 of the right elector 3R grips the right support 1R. For example, the left elector 3L is further operated while gripping the intermediate portion in the longitudinal direction of the left support 1L so that the left support 1L is along the left side portion of the peripheral wall surface Ta of the excavation pit T in the vicinity of the face surface W. The right elector 3R is temporarily placed in the right erecter 3R while gripping the intermediate portion in the longitudinal direction of the right support 1R, and the right support 1R is placed in the vicinity of the face surface W on the right side of the peripheral wall surface Ta of the excavation pit T. Temporarily place along the line.

The moving mechanism 33 holds the gripping mechanism 32 in a posture (hereinafter referred to as a basic posture) in which the support 1 is gripped along the peripheral wall surface Ta of the excavation pit T (tunnel) along the cross section of the tunnel (cross section shown in FIG. 2). It is a mechanism that can be moved in the same direction. The cross section of the tunnel is parallel to the face surface W, and in other words, the moving mechanism 33 is a mechanism capable of moving the gripping mechanism 32 in the basic posture in a direction parallel to the face surface W. For example, assuming that the gripping mechanism 32 of the catching arm 32A shown in FIGS. 12 and 13 is in the basic posture of gripping the support 1 (left support 1L) along the peripheral wall surface Ta of the excavation pit T. By moving the gripping mechanism 32, the moving mechanism 33 of the catching arm 32A can move the support 1 (left support 1L) in the direction along the cross section of the tunnel (in other words, the face surface W).

In the present embodiment, when the gripping mechanism 32 is in the basic posture (see, for example, FIGS. 12 and 13), the moving mechanism 33 is a shaft portion 331 that can be extended and contracted in a direction along the cross section of the tunnel, and is an elector. It has a shaft portion 331 that forms part of a connecting member between the boom 31 and the gripping mechanism 32. That is, in the present embodiment, the shaft portion 331 of the moving mechanism 33 extends in the direction along the tunnel cross section in the state of the gripping mechanism 32 in the basic posture (in other words, in the tunnel cross section and the face surface W). It extends parallel to it). The moving mechanism 33 is configured to move the gripping mechanism 32 in the basic posture in a direction along the cross section of the tunnel by driving the shaft portion 331 to expand and contract. Further, the shaft portion 331 of the moving mechanism 33 extends in a direction tilted with respect to the cross section of the tunnel in a state where the gripping mechanism 32 is tilted with respect to the basic posture. By telescopically driving the shaft portion 331, the gripping mechanism 32 is moved in a direction along a plane inclined with respect to the cross section of the tunnel.

In the present embodiment, the moving mechanism 33 has two shaft portions 331, and the two shaft portions 331 and 331 are extended in a direction intersecting (orthogonal) with each other. Specifically, there is a shaft portion 331 for vertical movement for moving the grip mechanism 32 in the vertical direction, and a shaft portion 331 for left-right movement for moving the grip mechanism 32 in the vehicle width direction (left and right). When distinguishing between the two shaft portions 331 and 331, the shaft portion 331 for vertical movement is referred to as a vertical movement shaft portion 331a, and the shaft portion 331 for left-right movement is referred to as a left-right movement shaft portion 331b.

In this embodiment, each catching arm 32A (Electa 3) further includes a front-back movement mechanism 37. The front-back movement mechanism 37 is provided between the elector boom 31 and the movement mechanism 33, and can move the gripping mechanism 32 in the basic posture in the front-back direction of the tunnel (in other words, in a direction perpendicular to the cross section of the tunnel). It is a possible mechanism.

Specifically, when the gripping mechanism 32 is in the basic posture, the front-rear direction moving mechanism 37 is a shaft portion 371 that can be extended and contracted in the front-back direction of the tunnel, and is an elector boom 31 and a gripping mechanism 32 (in the present embodiment). It has a shaft portion 371 that forms a part of a connecting member with the moving mechanism 33). That is, in the present embodiment, the shaft portion 371 of the front-rear direction moving mechanism 37 extends in the front-rear direction of the tunnel (in the direction perpendicular to the cross section of the tunnel) in the state of the gripping mechanism 32 in the basic posture. ). The front-rear direction movement mechanism 37 is configured to move the gripping mechanism 32 in the basic posture in the front-rear direction of the tunnel by driving the shaft portion 371 to expand and contract. Further, the shaft portion 371 of the front-rear movement mechanism 37 is a front-back movement mechanism when the grip mechanism 32 is tilted with respect to the basic posture and extends in a direction tilted with respect to the front-rear direction of the tunnel. The 37 moves the gripping mechanism 32 in a direction tilted with respect to the front-rear direction of the tunnel by driving the shaft portion 371 to expand and contract.

Further, the respective shaft portions 331a and 331b of the moving mechanism 33 and the shaft portion 371 of the front-rear direction moving mechanism 37 extend in a direction intersecting (orthogonal) with each other. That is, in the present embodiment, the catching arm 32A is three shaft portions (371, 331a, 331b) that intersect (orthogonally) with each other, respectively, in the extending direction of the shaft of each shaft portion (371, 331a, 331b). It has a shaft portion (371, 331a, 331b) that is expandable and contractible and forms a part of a connecting member between the elector boom 31 and the gripping mechanism 32, respectively.

In the present embodiment, each of the shaft portions 331a and 331b of the moving mechanism 33 has a fixed portion 332 and a movable portion 333 that can be moved with respect to the fixed portion 332. Further, the shaft portion 371 of the front-rear direction moving mechanism 37 also has a fixed portion 372 and a movable portion 373 that can be moved with respect to the fixed portion 372.

In the present embodiment, the three shaft portions (371, 331a, 331b) of the catching arm 32A form a part of the connecting member between the erecta boom 31 and the gripping mechanism 32, respectively, as described above, and the erecta boom. From the 31 side, the shaft portion 371 for moving in the front-rear direction (hereinafter, appropriately referred to as the shaft portion 371 for moving back and forth), the shaft portion 331a for moving up and down, and the shaft portion 331b for moving left and right are connected in this order.

Specifically, in the three shaft portions (371, 331a, 331b), from the elector boom 31 side, the fixed portion 372 of the front-back moving shaft portion 371, the movable portion 373, and the fixed portion 332 of the vertical movement shaft portion 331a. The fixed portion and the movable portion are alternately connected in the order of the movable portion 333, the fixed portion 332 of the left-right moving shaft portion 331b, and the movable portion 333. That is, in the present embodiment, in the two shaft portions 331, 331 (331a, 331b), the fixed portion 332 and the movable portion 333 are alternately connected in the order of the fixed portion 332 and the movable portion 333 from the elector boom 31 side. There is.

More specifically, each fixed portion (332, 372) and each movable portion (333, 373) are formed in a cylindrical shape, respectively. The fixed portion 372 of the forward / backward movement shaft portion 371 is connected to the tip end portion (tilt boom 313) of the erecta boom 31 so as to be able to swing (turn) in the width direction of the bogie with the base end portion on the erecta boom 31 side as a fulcrum. Has been done. The movable portion 373 of the front-rear movement shaft portion 371 is slidably attached in the axial direction within the fixed portion 372 of the front-rear movement shaft portion 371. The tip end side portion of the side portion of the fixing portion 332 of the vertical movement shaft portion 331a is fixed to the tip end side portion of the side portion of the movable portion 373 of the front-back movement shaft portion 371. The movable portion 333 of the vertical movement shaft portion 331a is slidably attached in the fixed portion 332 of the vertical movement shaft portion 331a in the axial direction. A portion on the base end side of the side portion of the fixing portion 332 of the left-right moving shaft portion 331b is fixed to the tip end portion of the movable portion 333 of the vertical movement shaft portion 331a. The movable portion 333 of the left-right movement shaft portion 331b is attached to the fixing portion 332 so as to be slidable in the axial direction on the outside of the fixing portion 332 of the left-right movement shaft portion 331b.

As shown in FIG. 14, in the present embodiment, each shaft portion (371, 331a, 331b) has, for example, a drive portion (374, 334a, 334b) for expansion / contraction drive including a hydraulic cylinder inside. There is. In the following, the drive unit for the front-rear movement shaft portion 371 is referred to as a front-rear movement drive unit 374, and the drive unit for the up-down movement shaft portion 331a is referred to as a up-down movement drive unit 334a. The drive unit for 331b is referred to as a left-right movement drive unit 334b.

Further, returning to FIGS. 9 to 13, the first fixed portion 372 of the forward / backward moving shaft portion 371 projects so as to project from the side portion toward the tip end portion side (front) of the fixed portion 372. A rib 372a is provided. One end of the arm swing cylinder 318 for swinging in the width direction of the bogie of the catching arm 32A is rotatably connected to the tip of the first rib 372a, and the other end of the arm swing cylinder 318 is an elector via a link mechanism 372b. It is connected to the tip end portion (tilt boom 313) of the boom 31.

Then, on the side surface of the movable portion 333 of the left-right moving shaft portion 331b on the opposite side of the elector boom 31, a gripping mechanism connecting portion 331b2 for connecting to the gripping mechanism 32 via a second rib 331b1 protruding from this side surface is provided. It is provided integrally with the movable portion 333 of the left-right moving shaft portion 331b. Further, a third rib 321a projecting downward is provided on one end side (second grip portion 323 side) of the bottom portion of the grip portion main body 321 of the grip mechanism 32. The third rib 321a is rotatably connected to the gripping mechanism connecting portion 331b2 around the tilting pin 321b via a tilting pin 321b extending in parallel with the forward / backward movement shaft portion 371. .. One end of the tilting cylinder 36 for tilting operation of the gripping mechanism 32 is connected to the gripping mechanism connecting portion 331b2, and the other end of the tilting cylinder 36 is connected to the other end of the gripping portion main body 321. The gripping portion main body 321 of the gripping mechanism 32 extends parallel to the left-right moving shaft portion 331b in a plan view viewed from above. When the tilting cylinder 36 operates, the gripping mechanism 32 turns (tilts) around the tilting pin 321b and tilts with respect to the left-right moving shaft portion 331b.

In the present embodiment, when the gripping mechanism 32 is in the basic posture, the moving mechanism 33 is viewed from above in a plan view, and the moving mechanism 33 has an end surface 325 (the end surface 325 on the opposite side of the gripping mechanism 32 from the carriage 2 (electa boom 31). It is located closer to the bogie than (see FIGS. 12 and 13), and the end surface 325 of the gripping mechanism 32 forms the tip surface of the erector 3.

Next, the installation operation of the support 1 in the support installation device 100 according to the present embodiment will be described. 15 to 18 are conceptual diagrams for explaining the operation of the support installation device 100. 15 and 16 mainly explain the operation of the moving mechanism 33, and FIGS. 17 and 18 mainly explain the operation of the substrate driving mechanism 5. Note that FIG. 16 is an enlarged view of the catching arm 32A on the left side shown in FIG. 15, and FIG. 18 is an enlarged view of a main part including the substrate drive mechanism 5 shown in FIG.

For example, there may be a case where it is desired to move the support 1 (1L, 1R) in the vertical direction or the width direction of the excavation pit T before, during, or after the connection between the left support 1L and the right support 1R. .. Here, each of the telescopic electors 3 grips the support 1 and moves the support 1 (1L, 1R) in the vicinity of the face surface W along the peripheral wall surface Ta of the excavation pit T. The Elekta 3 extends diagonally upward and outward in the width direction of the carriage and tilts. Therefore, the support work 1 (1L, 1R) can be moved in the vertical direction or the width direction of the excavation pit T by expanding and contracting each of the electors 3 in an inclined state as needed. However, if the support 1 is to be moved in the vertical direction or the width direction only by expanding and contracting the elector 3, the support 1 will also move in the front-rear direction during this movement. In this regard, the support installation device 100 uses the movement mechanism 33 to move the support 1 as follows.

In the examples shown in FIGS. 15 and 16, the support 1 is along the peripheral wall surface Ta of the excavation pit T in the vicinity of the face surface W, and the position of the support 1 in the front-rear direction coincides with the target position. However, it is assumed that the vertical direction of the support work 1 and the position in the width direction of the excavation pit T are deviated from the target position (in the figure, they are deviated diagonally to the upper right). Then, in this example, the gripping mechanism 32 is already swiveled around the tilting pin 321b by the tilting cylinder 36 in the basic posture of gripping the support 1 along the peripheral wall surface Ta of the excavation pit T. In this state, the moving mechanism 33 of the catching arm 32A moves the gripping mechanism 32 in the basic posture, which grips the support 1 along the peripheral wall surface Ta of the excavation pit T, in the direction along the cross section of the tunnel. Taking the catching arm 32A of the left elector 3L shown in FIG. 16 as an example, specifically, when the gripping mechanism 32 is in the basic posture, the vertical movement shaft portion 331a of the moving mechanism 33 has a cross section of the tunnel. Parallel to (face surface W) and extending in the vertical direction, the left-right movement shaft portion 331b of the moving mechanism 33 is parallel to the tunnel cross section (face surface W) and in the width direction (left-right direction) of the excavation pit T. It is extended. In this state, the vertical movement drive unit 334a is operated to move the grip mechanism 32 in the vertical direction (lower in the figure), and the left / right movement drive unit 334b is operated to move the grip mechanism 32 in the horizontal direction (left in the figure). Move to. In this way, the support installation device 100 moves the grip mechanism 32 in the direction along the cross section of the tunnel to move the support 1 in the vertical direction and in the vertical direction without changing the position of the support 1 in the front-rear direction of the tunnel. It is placed at the target position in the width direction of the excavation pit T.

By the way, at the time of installation of the support work 1, the device center line X1 of the support work installation device 100 becomes the tunnel center line X0 (specifically, the excavation pit) in a plan view seen from above, as shown in FIGS. 3 and 4. An ideal state (that is, the front end surface 21a of the bogie 2 of the bogie 2 is the front center of the face surface W of the excavation pit T) that matches the ideal state (that is, the center line that passes through the center in the width direction of T and extends in the excavation direction of the excavation pit T). It is preferable to operate the Elekta 3 in a state of facing the surface W). However, in reality, it is often difficult to install the dolly 2 in the ideal state as described above. In this regard, the support installation device 100 uses the substrate drive mechanism 5 to connect the left support 1L and the right support 1R before, during, and after the connection as follows. And the position of the right support 1R in the width direction of the trolley and the direction around the axis Y (second pin 514) extending in the vertical direction are adjusted.

Specifically, as shown in FIG. 17, the device center line X1 of the support installation device 100 passes through the center of the tunnel center line X0 (specifically, the center in the width direction of the excavation pit T and excavates in a plan view from above). The support installation device 100 is installed in front of the face surface W in a state of being tilted in the width direction of the excavation pit T and deviated in the width direction of the pit T with respect to the center line extending in the digging direction of the pit T). It is often done.

In such a case, as shown in FIG. 18, the first drive unit 522 for turning the substrate is operated to rotate the substrate 4 around the axis Y (second pin 514), and the first drive for the slide of the substrate is performed. The portion 521 is operated to move the substrate 4 in the width direction of the carriage. As a result, as shown in FIG. 18, the position and orientation of the substrate 4 are adjusted so that the substrate center line X2 of the substrate 4 is parallel to the tunnel center line X0 and coincides with the tunnel center line X0 in a plan view viewed from above. adjust. In the substrate drive mechanism 5, when the first drive unit 521 for the substrate slide is operated, the substrate 4 moves slightly (backward) not only in the width direction of the carriage but also in the front-rear direction (longitudinal direction) of the carriage 2. )do. When it is desired to correct only the movement amount of the bogie 2 in the front-rear direction, for example, the drive unit 374 for front-back movement of the catching arm 32A is operated, and the gripping mechanism 32 is moved in the front-rear direction (in other words, in other words) by the front-back movement mechanism 37. It may be moved in the direction perpendicular to the cross section of the tunnel).

According to the support installation device 100 for a tunnel according to the present embodiment, each elector 3 has a gripping mechanism 32 in the basic posture for gripping the support 1 along the peripheral wall surface Ta of the excavation pit T (tunnel) in a cross section of the tunnel. It is configured to include a moving mechanism 33 capable of moving in a direction along the above. Therefore, in each Elekta 3, a gripping mechanism 32 in a posture (the basic posture) of gripping the support 1 along the peripheral wall surface Ta of the excavation pit T (tunnel) is provided between the Electa boom 31 and the gripping mechanism 32. It can be moved in a direction along the cross section of the tunnel by the moving mechanism 33. As a result, for example, before, during, and after the connection between the left support 1L and the right support 1R, the gripping mechanism 32 in the basic posture is moved in the direction along the cross section of the tunnel by the moving mechanism 33. As a result, the support 1 along the peripheral wall surface Ta of the excavation pit T (tunnel) is moved in the direction along the cross section of the tunnel without changing the position of the support 1 in the front-rear direction of the tunnel. The position of 1 in the vertical direction and the position of the excavation pit T in the width direction can be finely adjusted.

In this way, the support installation device 100 for a tunnel is provided, in which the position of the support 1 along the peripheral wall surface Ta of the excavation pit T (tunnel) can be finely adjusted without changing the position in the front-rear direction of the tunnel. be able to.

In the present embodiment, in the support installation device 100, each base end portion of the pair of electors 3 and 3 on the bogie 2 side is connected to the base 4, and the base 4 is moved in the bogie width direction by the base drive mechanism 5. And can be swiveled around an axis Y (second pin 514) extending in the vertical direction. As a result, even when the bogie 2 is installed in a state where the device center line X1 of the support installation device 100 is tilted or displaced in the width direction with respect to the tunnel center line X0 (see FIG. 18), the substrate is driven. By moving the base 4 in the width direction of the bogie or turning the base 4 around the axis Y extending in the vertical direction by the mechanism 5, the bogie 2 is ideal for the entire pair of electors 3 and 3. Since it can be moved in the same position and orientation as when it is installed in the same position and orientation (see FIGS. 3 and 4), the operability of the elector 3 is improved and the support work 1 can be easily installed. It will be like. That is, the bogie 2 (bogie front end surface 21a, base front end surface 511a) is tilted diagonally without facing the face surface W, or the bogie 2 (bogie front end surface 21a, base front end surface 511a) is inclined to the face surface W. However, even if the device center line X1 is displaced in the width direction with respect to the tunnel center line X0, the dolly 2 is ideal for the entire pair of electors 3 and 3 by the substrate drive mechanism 5. It can be moved to the same position and orientation as when it is installed in the same position and orientation.

In this way, even if the bogie 2 is not installed in an ideal position or orientation, the support work installation device 100 for a tunnel capable of easily installing the support work 1 as compared with the conventional case is provided. be able to.

In the present embodiment, the moving mechanism 33 is a shaft portion 331 (331a, 331b) capable of expanding and contracting in a direction along the cross section of the tunnel when the gripping mechanism 32 is in the basic posture, and grips the erecta boom 31. It has a shaft portion 331 (331a, 331b) forming a part of a connecting member with the mechanism 32. That is, a part (331) of the connecting member between the elector boom 31 and the gripping mechanism 32 is expanded and contracted to move the gripping mechanism 32 in the direction along the cross section of the tunnel. As a result, the moving mechanism 33 can be constructed with a relatively simple structure without separately providing a connecting member between the elector boom 31 and the gripping mechanism 32.

In the present embodiment, the moving mechanism 33 has two shaft portions 331, and the two shaft portions 331 (331a, 331b) extend in directions intersecting each other. As a result, the gripping mechanism 32 can be moved in two directions (biaxial directions) intersecting each other in the cross section of the tunnel. Further, the shaft portion 331 has a fixed portion 332 and a movable portion 333 that can be moved with respect to the fixed portion 332. As a result, the shaft portion 331 can be divided into a portion fixed to another member and a movable portion.

In the present embodiment, in the two shaft portions 331 (331a, 331b), the fixed portion 332 and the movable portion 333 are alternately connected in the order of the fixed portion 332 and the movable portion 333 from the elector boom 31 side. Thereby, a connecting structure in which each shaft portion 331 can form a part of the connecting member between the elector boom 31 and the gripping mechanism 32 and can be independently expanded and contracted is provided in a compact and simple structure. Can be done. Further, the shaft portion 331 has a drive portion (334a, 334b) for expansion / contraction drive inside, and the movement mechanism 33 is further made compact.

In the present embodiment, the catching arm 32A has a front-back movement mechanism 37 capable of moving the gripping mechanism 32 in the basic posture in the front-back direction of the tunnel. As a result, the support work 1 (1L, 1R) can be changed only in the front-rear direction of the tunnel without changing the position in the direction along the cross section of the tunnel. Further, by providing the front-rear direction moving mechanism 37 between the elector boom 31 and the moving mechanism 33, the moving mechanism 33 can be brought closer to the gripping mechanism 32 side. The front-rear direction moving mechanism 37 is not limited to the space between the elector boom 31 and the moving mechanism 33, but may be provided between the moving mechanism 33 and the gripping mechanism 32.

In the present embodiment, in the state where the gripping mechanism 32 is in the basic posture (FIGS. 12 and 13), the moving mechanism 33 is viewed from above in a plan view, and the moving mechanism 33 is the end surface of the gripping mechanism 32 on the opposite side of the carriage 2. It is located closer to the carriage 2 than the 325, and the end surface 325 of the gripping mechanism 32 forms the tip surface of the erector 3. As a result, when the support 1 is installed in the vicinity of the face surface W using the support installation device 100, there is no member protruding toward the face surface W side from the tip surface (end surface 325) of the elector 3. The tip surface (end surface 325) of the erector 3 can be brought close to the face surface W, and the support work 1 can be easily arranged close to the face surface W.

In the present embodiment, the connecting portion 51 of the substrate drive mechanism 5 includes a connecting base portion 511 and a swing arm portion 512. As a result, the swing arm portion 512 is swiveled around the first pin 513 to move the base 4 in the vehicle width direction, and the base 4 is provided as a vertical axis Y provided at the tip of the swing arm portion 512. It can be swiveled around 2 pins 514. That is, in this substrate drive mechanism 5, all the movable parts are connected in a pin form, and the drive mechanism can be constructed with a relatively simple structure. Further, as compared with the substrate drive mechanism 5 shown in FIGS. 19 to 22, which will be described later, the weight of the device can be reduced.

The substrate drive mechanism 5 is not limited to the pin type, but may be a roller & pin type as shown in FIGS. 19 and 20, or a roller & bearing type as shown in FIGS. 21 and 22. ..

Specifically, in the substrate drive mechanism 5 shown in FIGS. 19 and 20, the connecting portion 51 is fixed on the bogie 2 and extends in the bogie width direction, and the rail portion 515 and the rail portion 515 in the bogie width direction. It is configured to include a movable mobile platform 516.

The rail portion 515 is fixed on the bogie 2 (the portion on the front end side of the upper surface of the vehicle body base portion 21), and is provided with a pair of rail members 515a and 515a spaced apart from each other in the front-rear direction, and a pair of rails. It consists of a rail support plate 515b connecting between the members 515a and 515a.

The moving table 516 is a block portion made of a moving table main body 516b to which a rotatable roller 516a guided by a rail portion 515 (rail member 515a) is attached, and a steel block material fixed on the moving table main body 516b. It has 516c. The rollers 516a are attached to each of the front side surface and the rear side surface of the moving table main body 516b at a plurality of positions at intervals in the vehicle width direction. The block portion 516c has a block front end surface 516d facing the back surface portion of the substrate 4. The block portion 516c is, for example, so that the block front end surface 516d is parallel to the bogie front end surface 21a of the bogie 2 (vehicle body base portion 21) and the center in the width direction thereof is located on the device center line X1. , It is fixed on the moving table main body 516b.

Further, in the substrate drive mechanism 5 shown in FIGS. 19 and 20, the connecting portion 51 includes a moving table pin 514'as a shaft Y extending in the vertical direction, and the substrate 4 is interposed via the moving table pin 514'. Is rotatably connected to the moving table 516 (specifically, the protruding portion 516e provided on the block front end surface 516d of the block portion 516c). The moving table pin 514'is arranged so as to be located at the center in the width direction (that is, on the device center line X1) on the block front end surface 516d. Further, in the drive unit 52, the second drive unit 521'for the substrate slide that moves the moving table 516 along the rail portion 515 to move the base 4 in the width direction of the bogie, and the base 4 around the pin 514' for the moving table. Includes a second drive unit 522'for turning the substrate. The second drive unit 521'for sliding the substrate and the second drive unit 522'for turning the substrate are each composed of, for example, a retractable hydraulic cylinder. One end of the second drive portion 521'for the substrate slide is connected to the rail support plate 515b of the rail portion 515, and the other end thereof is connected to the bottom surface of the mobile base main body 516b of the mobile base 516. The second drive unit 522'for turning the substrate is provided at two locations on the left and right, for example. One end of each substrate turning second drive unit 522'is connected to the moving table main body 516b of the moving table 516, and the other end is connected to the back surface portion of the substrate 4.

In the substrate drive mechanism 5 shown in FIGS. 19 and 20, when the substrate 4 is moved in the vehicle width direction, the second drive unit 521'for the substrate slide is operated. Further, when the substrate 4 is swiveled around the axis Y (moving table pin 514'), the second drive unit 522'for swirling the substrate is operated. At this time, the left and right second drive units for turning the substrate 522'and 522'operate in an interlocking manner in opposite directions and with the same stroke. Then, it is possible to both move the base 4 in the width direction of the bogie and turn the base 4 around the axis Y (moving base pin 514').

Further, also in the substrate drive mechanism 5 shown in FIGS. 21 and 22, the connecting portion 51 includes a rail portion 515 and a moving table 516. However, in this substrate drive mechanism 5, the structure for turning the substrate 4 around the axis Y extending in the vertical direction is different from that of the substrate drive mechanism 5 shown in FIGS. 19 and 20.

In the substrate drive mechanism 5 shown in FIGS. 21 and 22, the moving table 516 has the moving table main body 516b and does not have the block portion 516c. Further, the connecting portion 51 is a swivel table 517 that is provided on the mobile table 516 (moving table main body 516b) and can rotate around the rotation axis 514'' as the axis Y extending in the vertical direction, and is on the upper surface thereof. Further includes a swivel table 517 to which the substrate 4 is fixed. Then, the connecting portion 51 rotatably connects the substrate 4 to the moving table 516 via the swivel table 517. Specifically, a substrate block portion 42 projecting rearward is formed on the back surface portion of the substrate 4, and the substrate 4 is swiveled so that the substrate center line X2 passes through the rotation axis 514''. It is fixed on the table 517.

Further, in the substrate drive mechanism 5 shown in FIGS. 21 and 22, the drive unit 52 replaces the second drive unit 522'for turning the base and turns the base 4 around the rotation axis 514''. 3 Drive unit 522'' is included. The third drive unit 522 ″ for turning the substrate is made of, for example, a telescopic hydraulic cylinder. The third drive unit 522 ″ for turning the substrate is provided at two locations on the left and right, for example. One end of each substrate turning third drive unit 522'' is connected to the moving table main body 516b of the moving table 516, and the other end is connected to a protruding portion on the side surface of the substrate block portion 42 of the substrate 4. ..

In the substrate drive mechanism 5 shown in FIGS. 21 and 22, when the substrate 4 is rotated around the axis Y (rotational axis 514 ″), the third drive unit 522 ″ for substrate rotation is operated. At this time, the left and right third drive units for turning the substrate 522 ″ 522 ″ interlock and operate in opposite directions and with the same stroke. Then, both the movement of the base 4 in the width direction of the bogie and the turning of the base 4 around the axis Y (rotational axis 514 ″) can be performed. Further, in the substrate drive mechanism 5 of FIGS. 19 and 20 and the substrate drive mechanism 5 of FIGS. 21 and 22, the substrate 4 can be moved only in the carriage width direction, and the position in the front-rear direction accompanying the movement in the carriage width direction. There is no deviation.

Further, each elector 3 does not have to have the front-rear direction moving mechanism 37. The support installation device 100 does not have to have the substrate drive mechanism 5. In this case, the substrate 4 is directly fixed to the carriage 2. Further, although not shown, a pair of left and right spray booms to which spray nozzles for spraying concrete on the peripheral wall surface Ta of the drilling pit T may be provided on the front end surface 41 of the substrate 4 of the substrate 4. ..

Although the preferred embodiments and modifications of the present invention have been described above, the present invention is not limited to the embodiments and modifications, and various modifications and modifications can be made based on the technical idea of the present invention. be.

1 ... Supporting work,
2 ... dolly,
3, 3 ... A pair of electors,
31 ... Elekta boom,
32 ... Gripping mechanism,
325 ... The end face of the gripping mechanism on the opposite side of the bogie,
33 ... Movement mechanism,
331 ... Shaft,
331a ... Vertical movement shaft (shaft),
331b ... Left / right movement shaft (shaft),
332 ... Fixed part,
333 ... Moving parts,
334a ... Drive unit for vertical movement (drive unit for expansion / contraction drive),
334b ... Drive unit for left / right movement (drive unit for expansion / contraction drive),
37 ... Forward / backward movement mechanism,
4 ... Hypokeimenon,
5 ... Base drive mechanism,
51 ... Connecting part,
511 ... Connection base,
512 ... Swing arm part,
513 ... Pin 1,
514 ... 2nd pin,
514'... Moving table pin,
514'' ... Center of rotation,
515 ... Rail part,
516 ... Mobile platform,
517 ... Swivel table,
100 ... Supporting installation equipment,
T ... Excavation pit (tunnel)
Ta ... Circumferential wall,
Y ... A shaft extending in the vertical direction

Claims (8)

A support installation device for a tunnel having a trolley and a pair of erectors for installing a support that can swing in the width direction and the vertical direction of the trolley in front of the dolly, respectively.
Each elector of the pair of electors
Telescopic Elekta boom and
A gripping mechanism provided at the tip of the elector that can grip the support work,
A moving mechanism provided between the erecta boom and the gripping mechanism and capable of moving the gripping mechanism in a posture of gripping the support along the peripheral wall surface of the tunnel in a direction along the cross section of the tunnel. ,
including,
Support installation equipment for tunnels. The moving mechanism is a shaft portion that can be driven to expand and contract in a direction along the cross section of the tunnel when the gripping mechanism is in the posture, and is a part of a connecting member between the elector boom and the gripping mechanism. The support installation device for a tunnel according to claim 1, further comprising the shaft portion. The support installation device for a tunnel according to claim 2, wherein the moving mechanism has two shaft portions, and the two shaft portions extend in directions intersecting each other. The support installation device for a tunnel according to claim 3, wherein the shaft portion has a fixed portion and a movable portion movable with respect to the fixed portion. The support for a tunnel according to claim 4, wherein in the two shaft portions, the fixed portion and the movable portion are alternately connected in the order of the fixed portion and the movable portion from the elector boom side. Installation device. The support installation device for a tunnel according to any one of claims 2 to 5, wherein the shaft portion has a drive portion for telescopic drive inside. 1. Support installation device for the described tunnel. When the gripping mechanism is in the posture, the moving mechanism is located closer to the carriage than the end surface of the gripping mechanism on the opposite side of the carriage in a plan view of the moving mechanism from above. The support installation device for a tunnel according to any one of claims 1 to 7, wherein the end surface forms the tip surface of the elector.

Images