JP6719248B2 - Pivoting transfer device - Google Patents

Description

The present invention relates to a swivel type transport device.

BACKGROUND ART Conventionally, in a road tunnel with a large depth, widening work of a large-section tunnel that includes both main tunnels and ramp shield tunnels has been performed at the junction of the main tunnel and the ramp shield tunnel. As a method of constructing this underground widening part, by arranging a plurality of outer shell shield tunnels on the outside of the planned construction position of the underground hollow part at a predetermined interval, the shield roof front receiving surrounding the planned construction position of the underground hollow part The construction method is to construct a large cross-section space by excavating the inside of this shield roof pre-reception with a large cross-section shield tunnel and further excavating between the large cross-section shield tunnel and the shield roof pre-reception. Are known. As a method of constructing an underground widening part using such a shield roof pre-treatment, an outer shell shield machine is dug out from the vicinity of the tip part of the lamp shield tunnel, and a plurality of outer shell shield tunnels are branched outside the confluence part. By constructing the shield roof pre-ceiling surrounding the divergence and confluence in a dense arrangement along the contour, the inner side of the outer shell body is excavated by the shield roof pre-ceiling to widen the ground. A method of forming a portion is described (for example, see Patent Document 1).

In addition, as another construction method of a plurality of outer shell shield tunnels, for example, an underground starting base extending in the circumferential direction along the periphery of the main line shield tunnel is provided, and the underground starting base is located outside the predetermined starting position. It is also known to install a shell shield machine and proceed with excavation.

Japanese Patent No. 4803428

However, the construction of the conventional large-section tunnel described above has the following problems.
That is, when constructing an outer shell shield tunnel using an underground starting base, a communication opening to the underground starting base is provided in a part of the main line shield tunnel, and materials such as the segment being excavated from this opening are provided. It must be transported in the circumferential direction. By the way, conventional material transportation using power has been limited to vertical, horizontal, and diagonal axial linear movements.
Further, since the material is fixed to the transportation device during transportation, it is necessary to use a jack or the like to correct the posture when the posture of the material is inclined during transportation, which is a troublesome work. ..
Further, when the material transportation track has an arcuate shape in the circumferential direction as described above, there is a problem that the material loaded on the transportation device cannot always be kept horizontal.

The present invention has been made in view of the above-mentioned problems, and a swivel type conveying device capable of moving a material to a predetermined position with a simple structure and keeping the material posture always horizontal. The purpose is to provide.

In order to achieve the above-mentioned object, the swivel type conveying device according to the present invention moves to an upright ring-shaped guide rail, a first rack gear provided on the inner peripheral side of the guide rail, and the guide rail. A support frame that is freely guided, a first pinion gear that is provided on the support frame, and has a drive source that meshes with the first rack gear, and an inner peripheral surface that is formed in a cylinder, and the axial direction of the cylinder is A circular frame provided in the support frame in the same direction as the axial direction of the guide rail, a carriage movably supported in a circumferential direction along an inner wall surface of the circular frame, and a loading surface of the carriage. An attitude control mechanism for horizontally holding the attitude control mechanism , wherein the attitude control mechanism is provided on the carriage to detect an inclination of the load surface, and an inclination detection unit provided on an inner peripheral surface of the circular frame. Two rack gears and a second pinion gear provided on the carriage and having a drive source that meshes with the second rack gear are provided .

According to the present invention, since the loading frame on which the material is loaded is always movably held by the ring-shaped guide rail which is upright via the support frame, the circular frame provided with the trolley can be kept horizontal. With a simple structure, materials can be easily transported.
In addition, the posture control mechanism can control the posture of the loading surface of the carriage to be always kept horizontal in accordance with the inclination of the loading surface of the carriage detected by the inclination detecting unit. Therefore, it is possible to keep the material placed on the loading surface in a horizontal posture regardless of the position of the circular frame (carriage) in the circumferential direction. Therefore, the material can be conveyed in a stable posture in the circumferential direction, and the material can be easily delivered.
Further, in this case, the attitude control mechanism controls the second rack gear provided on the inner peripheral surface of the circular frame and the second pinion gear provided on the truck to keep the loading surface of the truck horizontal. can do.

Further, in the swivel type conveying device according to the present invention, it is preferable that the first pinion gear is provided with a braking mechanism for braking rotation of the first pinion gear.

In this case, the rotation of the first pinion gear is braked by the braking mechanism, so that the circular frame provided with the carriage can be reliably fixed at a predetermined position.

Further, in the swivel type transport device according to the present invention, the guide rail is provided in an underground shaft erected in a ring shape along an outer peripheral portion of a main tunnel provided in the ground, and the circular frame is It is guided along the guide rail and is fixedly provided at a predetermined stop position in the circumferential direction of the underground shaft, and at the stop position, the loading surface of the carriage is held horizontally by the attitude control mechanism. It may be.

In this case, when the underground shaft is provided in a ring shape along the outer periphery of the main tunnel, the materials such as the shield machine can be easily and efficiently arranged in the circumferential direction in the underground shaft. Can be transported to.

According to the swivel type conveying device of the present invention, the material can be moved to a predetermined position with a simple structure, and the attitude of the material can be always kept horizontal.

It is a perspective view of the large section tunnel in which the conveyance device by an embodiment of the invention is used. It is a front view of the conveyance apparatus shown in FIG. 1. It is the X1-X1 line arrow line view shown in FIG. It is the X2-X2 line arrow line view shown in FIG. (A)-(d) is explanatory drawing for demonstrating the moving state of a circular frame. It is explanatory drawing for demonstrating the moving state of a circular frame.

Hereinafter, a swivel type conveying device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an example in which a turning type transfer device (hereinafter, simply referred to as a transfer device A) is applied to a construction method of a road tunnel having a large cross section. Before the detailed description of the carrier A, the construction of a large cross section tunnel will be described.

The construction method of the large cross section tunnel of the present embodiment is, for example, in a large cross section road tunnel, the underground is excavated by the shield construction method to construct the underground widening section K in a part of the main line shield tunnel 100 (main tunnel). It was applied to the construction to join the lamp shield tunnel. Specifically, the main line shield tunnel 100 is pre-installed inside the planned excavation position of the underground widening section K, and the outer shell shield tunnels 201 are provided with the outer shell shield tunnels 200 on the outer side of the main line shield tunnel 100. By excavating, an outer shell portion 300 that is constituted by the outer shell shield tunnel 200 and surrounds the main line shield tunnel 100 is constructed, and the inside of the outer shell portion 300 is excavated to construct an underground widening portion K by a construction method. is there. The main line shield tunnel 100 and the outer shell shield tunnel 200 are constructed by a known shield construction method.

The outer shell shield tunnel 200 is started in parallel with the main shield tunnel 100 from a plurality of locations in the tunnel circumferential direction in the underground shaft portion 400 provided at a predetermined position in the tunnel axis direction X of the main shield tunnel 100. It should be noted that, in accordance with the size of the outer shell portion 300 to be constructed, after the start of the excavation, the excavation is gradually proceeded in the direction away from the main line shield tunnel 100 toward the outside in the radial direction of the tunnel, and the predetermined position is reached. By the way, you may make it excavate substantially parallel to the main line shield tunnel 100.

The underground shaft section 400 is provided in a ring shape coaxially with the main line shield tunnel 100 along the tunnel circumferential direction, and is constructed using an underground shaft excavator. The distance in the tunnel radial direction of the underground shaft portion 400 is large enough to allow the outer diameter of one outer shell shield machine 201 to start, and is also a sufficient dimension that allows the transfer device A to move in the tunnel circumferential direction. Is set to.
When constructing the underground shaft portion 400, the ground in the excavation construction range is previously frozen by the freezing method. Further, the wall surface of the starting portion of the outer shell shield machine 201 is constructed of a material such as carbon fiber-containing concrete that can be cut by a cutting cutter as in a general shield construction method.

The transport device A will be described below with reference to FIGS. 2 to 4.
The carrying device A includes a guide rail 1 formed in an upright ring shape, a first rack gear 3 provided on an inner peripheral side of the guide rail 1, a support frame 10 movably guided by the guide rail 1. First pinion gears 13a and 13b provided on the support frame 10 and having a drive source that meshes with the first rack gear 3, and an inner peripheral surface are formed in a cylinder, and the axial center direction of the cylinder is the axial center of the guide rail 1. The circular frame 20 provided in the support frame 10, the carriage 30 movably supported in the circumferential direction along the inner wall surface of the circular frame 20, and the inclination of the loading surface 30a of the carriage 30 are formed in the same direction. It has an inclination detection unit (not shown) for detecting, and is provided with attitude control mechanisms 32 and 33 for horizontally holding the loading surface 30a.

The guide rail 1 is provided around the main line shield tunnel 100 that is open in the underground shaft section 400 and in an upright ring shape so as to be coaxial with the main line shield tunnel 100. That is, the guide rail 1 is composed of a pair of rail members 1a and 1b provided on the side opposite to the opening 101 (see FIG. 6) side of the main line shield tunnel 100 (outer peripheral side of the underground shaft portion 400). The first rail member 1a on one side and the second rail member 1b on the other side are provided at a predetermined distance from each other in the tunnel axis direction X. Around the pair of rail members 1a and 1b, there are provided guide groove lines 2 into which a roller 11 provided in a support frame 10 described later is movably inserted, and the pair of rail members 1a and 1b are provided. First rack gears 3 are provided around the inner sides of the members 1a and 1b, respectively.

The support frame 10 is made of a pair of steel arm members 10a and 10b. One of the pair of arm members 10a and 10b is provided with one first arm member 10a on the side of the first rail member 1a and the other one. The two-arm member 10b is provided on the second rail member 1b side.

Each arm member 10a, 10b has a U-shape with the opening side slightly widened, and is rotatably inserted into the guide groove 2 provided on the rail members 1a, 1b at both ends on the opening side. Each roller 11 is provided.

Side rollers 12 are provided near the rollers 11 provided on the arm members 10a and 10b, respectively. The axial direction of the side roller 12 is provided so as to be orthogonal to the axial direction of the roller 11, and is provided so as to abut on the inner side surfaces of the arm members 10a and 10b, respectively. Therefore, the first arm member 10a is movably held without departing from the first rail member 1a, and the second arm member 10b is movably held without departing from the second rail member 1b. ..

The support frame 10 is provided with a pair of first pinion gears 13 a and 13 b that mesh with the first rack gear 3 provided on the guide rail 1. Of the pair of first pinion gears 13 a and 13 b, one pinion gear 13 a is connected to a drive source 14 a including a motor provided in the support frame 10, and the other pinion gear 13 b is provided in the support frame 10. Is connected to a drive source 14b composed of a motor.

Further, of the pair of pinion gears 13a and 13b, a braking mechanism 16a including a disc brake is provided on the shaft 15a of one pinion gear 13a, and a braking mechanism including a disc brake is provided on the shaft 15b of the other pinion gear 1b. 16b is provided.

The circular frame 20 is made of tubular steel whose outer shape is open at both ends, and is provided on the side opposite to the opening side of the pair of U-shaped arm members 10a and 10b. A storage chamber 21 having an inner peripheral surface formed in a cylinder is formed inside the circular frame 20, and the axial direction of the cylinder is in the same direction as the axial direction of the ring-shaped guide rail 1. Are provided on the pair of arm members 10a and 10b so as to maintain the above.

The circular frame 20 and the pair of first arm members 10a and 10b have a relationship that the outer circumference on one end side of the circular frame 20 forms a U-shaped curved portion of the first arm member 10a and the outer circumference on the other end side is the first. It is configured to form a U-shaped curved portion of the two-arm member 10b. The diameter of the accommodation chamber 21 is determined according to the outer shell shield machine 201 that constructs the outer shell shield tunnel 200, and is, for example, 4 m.

A ring-shaped second rack gear 22 is provided at the center of the inner peripheral surface of the circular frame 20 formed in the cylinder. The second rack gear 22 meshes with a second pinion gear 33 provided on the dolly 30 side, and constitutes a part of attitude control mechanisms 32 and 33 described later.

The trolley 30 is made of steel having a predetermined thickness that is rectangular in a plan view, has a width smaller than the diameter of the accommodation chamber 21 of the circular frame 20 and a depth of FIG. As shown, it is determined to be slightly smaller than the depth of the accommodation chamber 21, that is, slightly smaller than the distance between the pair of arm members 10a and 10b.

The carriage 30 is provided with rotatable rollers 31 whose axial direction is the same as the axial direction of the circular frame 20 at both front and rear end portions on the width side. Therefore, the carriage 30 is movable along the circumferential direction of the inner wall surface of the accommodation chamber 21.

A second pinion gear 33 having a motor as a drive source 32 is provided on the lower surface of the truck 30 and at a position facing the second rack gear 22 provided on the circular frame 20, and the second rack gear 22 is provided. Is configured to mesh with. Therefore, when the second pinion gear 33 is rotated, the position of the carriage 30 in the storage chamber 21 can be moved. The second rack gear 22, the motor drive source 32, and the second pinion gear 33 constitute posture control mechanisms 32 and 33 that control the posture of the loading surface 30a on which the material is loaded to be held horizontally.

Although not shown, the cart 30 is provided with an inclinometer (tilt detector) (not shown) that detects the inclination of the loading surface 30a, and is configured to detect the inclination of the loading surface 30a in real time. .. Then, the posture control mechanisms 32 and 33 are configured to control the posture of the loading surface 30a so as to always keep the posture horizontal based on the detected value of the inclination.

Next, with reference to FIGS. 5A to 5D, the movement operation of the transporting device A having the above configuration with respect to the guide rail 1 and the attitude control operation of the carriage 30 will be described.

When the drive sources 14a and 14b provided in the support frame 10 integrated with the circular frame 20 are driven, the first pinion gears 13a and 13b are rotated to support the movement of the transfer device A with respect to the guide rail 1. This is performed by moving the frame 10 and the circular frame 20 on the first rack gear 3 provided on the guide rail 1.
5A to 5D show different moving positions of the transport device A with respect to the guide rail 1. Then, at the respective moving positions, the braking mechanisms 16a and 16b are operated to fix the position of the transport device A.

The loading surface 30a on which the material of the carriage 30 is loaded is always subjected to posture control so that the loading surface 30a is kept horizontal even if the position of the transport device A with respect to the guide rail 1 is different. In this attitude control, the second pinion gear 33 provided on the trolley 30 side is rotated to move on the second rack gear 22 provided on the circular frame 20 side, and the inclination of the loading surface 30a is always horizontal. It is performed while being detected by the inclinometer.

FIG. 6 shows an example of transporting materials such as an outer shell shield machine using the transport device A having the above configuration.

In transporting this material, first, the transport device A is located at the lowest position of the guide rail 1 shown in (0) of FIG. Then, at this position, the material carried from the main line shield tunnel 100 through the lifting device 500 is loaded on the loading surface 30 a of the carriage 30.
Next, the carrier A is moved to a predetermined position on the guide rail 1 by the method shown in FIG. 5 (see (1) to (6) in FIG. 6). Even during this movement, the loading surface 30a of the truck 30 is always kept horizontal by the above-described method.

In the transport apparatus A having such a configuration, the circular frame 20 provided with the carriage 30 that can keep the loading surface 30a on which the material is loaded is always horizontal, is a ring-shaped guide rail in which the circular frame 20 is upright via the support frame 10. Since it is movably held in 1, the material can be easily transported with a simple structure.
In addition, the attitude control mechanisms 32 and 33 can control the attitude of the loading surface 30a to be always kept horizontal in accordance with the inclination of the loading surface 30a of the carriage 30 detected by the tilt detection unit such as an inclinometer. it can. Therefore, the material placed on the loading surface 30a can be maintained in a horizontal posture regardless of the position of the circular frame 20 (the trolley 30) in the circumferential direction. Therefore, the material can be conveyed in a stable posture in the circumferential direction, and the material can be easily delivered.

Further, in the present embodiment, the rotation of the first pinion gears 13a and 13b is braked by the braking mechanisms 16a and 16b, so that the circular frame 20 provided with the carriage 30 can be reliably fixed at a predetermined position.

Further, in the present embodiment, the carriage is controlled by controlling the second rack gear 22 provided on the inner peripheral surface of the circular frame 20 and the second pinion gear 33 provided on the carriage 30 by the attitude control mechanisms 32 and 33. The loading surface 20a of 30 can be always held horizontally.

Further, when the underground shaft section 400 is provided in a ring shape along the outer periphery of the main line shield tunnel 100 as in the present embodiment, materials such as a shield machine can be easily installed in the underground shaft section 400. In addition, it can be efficiently and efficiently conveyed in the circumferential direction.

Although the embodiment of the swivel-type conveying device according to the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and can be appropriately modified without departing from the spirit of the present invention.

For example, in the above-mentioned example, the drive source of the support frame 10 is two sets of the drive sources 14a and 14b composed of motors, but it may be one set. In the above-mentioned example, the position of the transfer device A is not fixed. The braking mechanism 16a, 16b including a disc brake is used, but this may be performed by providing a lock cylinder on the support frame 10 and abutting it on the wall surface of the underground shaft section 400. .. Further, in the above-mentioned example, the transfer device A is applied to the construction of a road tunnel having a large cross section, but the transfer device A can be adopted in other fields as long as it conveys materials in an arc shape.

In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with known constituent elements without departing from the spirit of the present invention.

A carrier device (swivel type carrier device)
1 guide rail 1a, 1b rail member 2 guide groove 3 first rack gear 10 support frame 10a, 10b arm member 11 roller 12a, 12b side roller 13a, 13b first pinion gear 14a, 14b drive source 15a, 15b shaft 16a, 16b braking Mechanism 20 Circular Frame 21 Storage Room 22 Second Rack Gear 30 Cart 30a Loading Surface 31 Roller 32 Drive Source 33 Second Pinion Gear K Ground Widening Section 100 Main Line Shield Tunnel (Main Tunnel)
200 Outer shell shield tunnel 201 Outer shell shield machine 300 Outer shell part 400 Underground shaft 500 Elevating device

Claims (3)

With a guide rail formed in an upright ring shape,
A first rack gear provided on the inner peripheral side of the guide rail;
A support frame movably guided to the guide rail,
A first pinion gear that is provided on the support frame and has a drive source that meshes with the first rack gear;
A circular frame provided on the support frame, the inner peripheral surface of which is formed in a cylinder, and the axial direction of the cylinder is the same as the axial direction of the guide rail.
A carriage that is movably supported in the circumferential direction along the inner wall surface of the circular frame,
An attitude control mechanism for horizontally holding the loading surface of the cart ,
The attitude control mechanism,
An inclination detector provided on the trolley for detecting the inclination of the load surface,
A second rack gear provided on the inner peripheral surface of the circular frame;
And a second pinion gear having a drive source that is provided on the carriage and meshes with the second rack gear . The swivel transfer device according to claim 1, wherein the first pinion gear is provided with a braking mechanism that brakes rotation of the first pinion gear. The guide rail is provided in the underground shaft section that is constructed in a ring shape along the outer periphery of the main tunnel provided in the ground,
The circular frame is guided along the guide rail and is provided so as to be fixable at a predetermined stop position in the circumferential direction in the underground shaft.
The swivel transfer device according to claim 1 or 2 , wherein the loading surface of the carriage is held horizontally by the attitude control mechanism at the stop position.

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