JPH052061B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an earth and sand excavator for a pneumatic caisson used in a work room of a pneumatic caisson or the like.

(Prior art) A caisson is usually made of reinforced concrete on the ground and installed at a predetermined location, and while excavating and discharging earth and sand from the ground, the caisson's own weight allows it to sink to a predetermined supporting ground.

Such caissons are constructed with rectangular or circular shapes, and recently a running rail has been installed on the ceiling of the working room installed at the bottom of the caisson, and an excavation device is movably attached to this running rail to perform excavation. Work rooms are being unmanned.

In this case, in order to excavate the entire working room,
It is also necessary to provide a traveling rail attached to the ceiling with a radius of curvature so that the excavation equipment can be moved along the traveling rail.

(1) Therefore, as a means of transmitting driving force to the running wheels that move the excavation equipment,
No. 2 is proposed.

(2) In addition, as a system for running without driving the running wheels, there have been proposed those in Japanese Utility Model Publication Nos. 54-35521 to 22 which use racks and pinions or chains.

(3) These traveling wheels have been proposed in which left and right wheels are fixed to a single shaft.

(4) In addition, shovel type excavators are often used in conventional excavators, especially overhead traveling types (problem to be solved by the invention). As shown, with the type that directly transmits driving force to the running wheels, it is difficult to run smoothly on curved sections due to the difference in rail length between the inside and outside.
Additionally, if the caisson is tilted, it may be difficult to drive the vehicle solely by the frictional force of the wheels.

(2) Rack and pinion or chain drives are difficult in the case of rails with a radius of curvature, and expensive equipment must be used to make this possible.

(3) Vehicles with wheels fixed on both sides of a single axle cannot run on rails with a radius of curvature.

(4) In the case of conventional excavation equipment used for overhead traveling, it is difficult to peel off with highly viscous earth and sand.

There were other drawbacks.

The present invention was made in view of the above-mentioned points, and its purpose is to handle not only straight lines and gentle curves, but also rails with a small radius of curvature.
Another object of the present invention is to provide an earth and sand excavator for a neutral caisson, which has a simple structure and can easily travel even when the caisson is tilted.

(Means for Solving the Problems) The present invention includes: (1) a pair of running rails fixed to the ceiling of a working room of a pneumatic caisson to be sunk underground; In addition, a travel drive device has a pinion gear that meshes with a gear having a tooth surface that is approximately perpendicular to the ceiling surface and is rotationally driven by a motor, and the travel drive device is capable of traveling and pivoting downward through this travel drive device. a traveling main body equipped with an excavation device; a traveling wheel portion rotatably supported on the traveling main body; The above object is achieved by having a configuration including a plurality of movable pincushion wheels.

(2) In addition, there is a pair of running rails fixed to the ceiling side of the working room of the neutral caisson that is sunk underground, and a tooth surface provided on at least one of these running rails and making a substantially right angle to the ceiling. a traveling drive device having a pinion gear that meshes with a gear having a curvature of the rail and is rotationally driven by a motor; arranged together to hold the traveling rail;
The above object is achieved by having a configuration including a plurality of pincushion wheels that can roll in a substantially horizontal direction.

(3) In addition, there is a pair of running rails fixed to the ceiling side of the working room of the neutral caisson that is sunk underground, and a tooth surface provided on at least one of these running rails and making a substantially right angle to the ceiling. A traveling drive device having a pinion gear that meshes with a gear and is rotationally driven by a motor, and a traveling main body that travels via this traveling drive device and is equipped with an excavation device below, along a traveling rail. The above object is achieved by a configuration including a plurality of pincushion-shaped wheels that hold the traveling rail and can roll in a substantially horizontal direction.

(4) In addition, in (1), (2) or (3) above, the excavation equipment is configured to be able to rotate freely relative to the traveling body, and has a boom that is extendable and retractable and can be raised and lowered. , and the tip of this boom is provided with a rotatable bucket for excavating the ground, and the tip of the boom having this bucket is provided on a rotating part that freely rotates approximately around the boom axis, thereby achieving the above purpose. are doing.

(Function) In the present invention, when a rotatable traveling wheel portion is provided to a traveling main body having a traveling drive device and the traveling wheel portion is configured to rotate, since the traveling wheel portion rotates, Even if the rail has a radius of curvature, it can run smoothly.

In addition, the running wheel section is equipped with a pincushion-type wheel that holds the running rail and can roll freely, and the pincushion-shaped wheel holds the running rail between the top and bottom, and also prevents horizontal movement of the running body. Due to this simple structure and a drive device independent from the wheels, the caisson can run smoothly even if it is tilted.

(Embodiment) Fig. 1 shows a first embodiment of the present invention, in which 1 is a caisson body having a circular, oval, or oval shape, and 2 is a blade formed on the lower side wall of the caisson body. 3 is a slab, and 3a is the ceiling surface of the work room 4. On this ceiling surface, a pair of rail bases 5 ₁ and 5 ₂ that are approximately E-shaped and have a straight line or an appropriate radius of curvature or a straight line are firmly attached. It is set in. Further, running rails 6 ₁ and 6 ₂ are fixedly installed at the lower ends of these rail bases 5 ₁ and 5 _2, respectively, and at least one of the running rails 6 ₁ and 6 ₂ has a wall facing the ceiling inside. A gear 6a arranged at a substantially right angle is formed, and a portion of the traveling rail ₆₁ is configured to function as a so-called ring gear.

7 is a traveling main body having a traveling drive device 8.
The traveling drive device 8 includes a hydraulic motor 9 and a pinion gear 10 attached to its drive shaft and meshing with the gear 6a, as shown in FIG. In this case, the hydraulic motor 9 is fixed to the frame 12 of the traveling body 7 or the traveling wheel portion 11 via appropriate attachment means.

FIG. 3 is a schematic plan view showing a state in which the traveling wheel portion 11 is rotatably provided at the front and rear of the traveling main body 7 via a pivot seat 13. The running wheel section 11 has a frame 11a having a substantially rectangular plane, and at both ends of this frame 11a, as shown in FIG. 1 and more specifically in FIG.
is formed, and a shaft 1 is formed on this running wheel support portion 11b.
A suitable number of pincushion wheels 14 are pivotally connected via 4a. This pincushion wheel 14 has the shape of a pincushion, and an upper flange 14c and a lower flange 14d each having a disc shape are formed on the upper and lower sides of the main body 14b, and the outer periphery of the main body 14b has a running rail 6 ₁ ,
The flanges 14c and 14d are in rolling contact with the outer periphery of the running rails 6 _{1 and} 6 ₂ , respectively.
Located on the outer upper and lower surfaces of 6 ₂ , the running rail 6 ₁ ,
6 Hold down the top and bottom of ₂ . In addition, the main body 14
By b, the running wheel part 11 and furthermore the running body 7
However, it goes without saying that there may be a slight gap between the outside of the running rails 6 ₁ and 6 ₂ and the outer periphery of the main body 14b as long as it does not cause any problem.

Next, returning to FIG. 1 again, the excavation equipment and its turning device will be explained.

A first swing bearing 15 is provided on the lower surface of the frame 11a of the running wheel portion 11, and a disk-shaped running frame 16 is provided on the movable side of the swing bearing 15.

Further, a swing ring gear 17 is fixed to the lower surface of the traveling frame 16. This rotating ring gear 1
A second swing bearing 18 is provided on the lower surface side of the swing bearing 7, and a swing frame 19 is rotatably attached to the swing ring gear 17 on the movable side of the swing bearing 18. Further, a swing motor 20 is fixed to the swing frame 19,
A turning pinion 21 is provided on the drive shaft of this turning motor 20. This turning pinion 21 is meshed with the turning ring gear 17, and the turning pinion 21 is configured to roll around the turning ring gear 17 as the turning motor 20 rotates. Therefore, the rolling motion of the swing pinion 21 causes the swing frame 19 to move around the swing bearing 1.
It will be rotated around the rotation center of 8.

Further, an excavation device 22 is attached to the lower part of the traveling main body 7 via the above-mentioned turning device. As shown in FIG. 1, this excavating device 22 has a telescopic boom case 24 rotatably attached to it via an engaging portion 23a of a mounting plate 23 fixed to a revolving frame 19. A support portion 24a is provided in front of the telescopic boom case 24, and a boom cylinder 25 connected to the rotating frame 19 is provided on the support portion 24a. Due to the operation of the boom cylinder 25, the telescopic boom case 24 has a structure in which it can be swung up and down using the shaft of the engaging portion 23a as a fulcrum, that is, it can be raised and lowered. Further, the telescopic boom case 24 is slidably provided with a telescopic boom 26, and the telescopic boom 26 is slidably moved from the telescopic boom case 24 by, for example, hydraulic pressure so as to be freely protruding and retractable.
Additionally, a rotating section 27 is provided at the tip of the telescopic boom 26.
A tip boom 28 is provided via.

The rotating section 27 rotates the tip boom 28 in the radial direction, that is, freely rotates around the boom axis, and has a structure as shown in FIG. 5. That is, a flange 29 is fixed to the tip of the telescopic boom 26, and an outer ring 31 is provided around the flange 29 via bolts 30. On the other hand, a flange 32 is fixed to the end face of the tip boom 28, and an inner ring 34 is attached to the periphery of the flange 32 via bolts 33.
is provided. The inner ring 34 and the outer ring 31 are rotatably attached via balls. A gear 35 is provided on the inner diameter of this inner ring 34, and a pinion gear 36 is meshed with this gear 35.
This pinion gear 36 is attached to the rotating shaft of a hydraulic motor 37 attached to the flange 29 of the telescopic boom 26. The rotating section 27 has the above-described configuration, and by rotating the hydraulic motor 37, the tip boom 28 is rotated with respect to the telescopic boom 26 via the gear 35. This tip boom 28 is equipped with a bucket cylinder 3 shown in FIG.
A bucket 39 is provided which is actuated by 8.

Regarding the operation of the earth and sand excavation equipment for pneumatic caissons having the above-mentioned configuration, Fig. 9 and Fig.
This will be explained with reference to FIG.

The traveling main body 7 suspended from the traveling rails 6 ₁ and 6 ₂ provided on the ceiling of a work room such as a pneumatic caisson is moved to a predetermined position by the above-mentioned traveling drive device 8 provided on the traveling main body 7. It will be run. Next, by the operation of the swing motor 20, the drilling equipment 2
2 in a predetermined direction, operate the boom cylinder 25 to lower the tip boom 28, move the telescopic boom 26 in and out of the telescopic boom case 24, and adjust the angle of the bucket 39 by the bucket cylinder 38 as necessary. Dig while making adjustments. During this excavation, the bucket 39 can also be operated by operating the rotary part 27 to reverse the bucket. As described above, the pneumatic caisson earth and sand excavator of the present invention can be smoothly moved anywhere in the work room provided with running rails, and the excavator 2
2 so that it can be moved in any direction.

FIG. 6 shows a second embodiment of the present invention. In this embodiment, the running body 7 has a running wheel portion 11 having a radius of curvature corresponding to the curvature of the running rails 6 ₁ and 6 ₂ .
A is integrally constructed, and the traveling drive device 8 is provided on the traveling main body 7. In this embodiment, the device can be smoothly run along a running rail having a radius of curvature. Note that the other configurations and operations are the same as those of the previous embodiment.

FIG. 7 shows a third embodiment of the present invention, in which the running wheel portion 11B is linearly integrated with the running body 7, and the running rails 6 ₁ and 6 ₂ have many straight parts. This makes it possible to handle objects with a large radius of curvature and only a gentle curve.

In this embodiment, since the traveling wheel portion 11B is integral and linear, there is an advantage that the manufacturing cost of the device is somewhat reduced.

Other configurations and operations are similar to those of the previous embodiment.

(Effects of the Invention) As described above, according to the present invention, (1) a pair of running rails fixed to the ceiling of a working room of a pneumatic caisson to be sunk underground; A traveling drive device having a pinion gear that meshes with a gear having a tooth surface that is substantially perpendicular to the ceiling surface and is rotationally driven by a motor; a traveling main body equipped with a rotatable excavation device; a traveling wheel portion rotatably supported on the traveling main body; and a traveling wheel portion provided on the traveling wheel portion and supporting the traveling rail in a substantially horizontal direction. Since the configuration includes a plurality of pincushion-shaped wheels that can roll on the traveling rail, the traveling body can run smoothly even when the traveling rail is a curve with a small curvature, and the pincushion-type wheels can be loosely fitted to the traveling rail. However, since it is mounted in a straight line, it has the effect of allowing the main body to run stably even when the caisson is tilted or vibrates.

(2) In addition, there is a pair of running rails fixed to the ceiling side of the working room of the neutral caisson that is sunk underground, and a tooth surface provided on at least one of these running rails and making a substantially right angle to the ceiling. a traveling drive device having a pinion gear that meshes with a gear having a curvature of the rail and is rotationally driven by a motor; The structure includes a plurality of pincushion-shaped wheels that are arranged together, hold the traveling rail, and can roll approximately horizontally, so in addition to the above effects, the wheels can be adjusted to the curvature of the rail. This makes it easier to turn and travel around curves more smoothly.

(3) In addition, there is a pair of running rails fixed to the ceiling side of the working room of the neutral caisson that is sunk underground, and a tooth surface provided on at least one of these running rails and making a substantially right angle to the ceiling. A traveling drive device having a pinion gear that meshes with a gear and is rotationally driven by a motor, and a traveling main body that travels via this traveling drive device and is equipped with an excavation device below, along a traveling rail. disposing wheels and holding the traveling rail;
A configuration including a plurality of pincushion wheels that can roll in a substantially horizontal direction has a simple configuration and can reduce manufacturing costs.

(4) In addition, in (1), (2) or (3) above, the excavation equipment is configured to be able to rotate freely relative to the traveling body, and has a boom that is extendable and retractable and can be raised and lowered. , and the tip of this boom is provided with a rotatable bucket for excavating the ground, and the tip of the boom with this bucket is installed on a rotating part that freely rotates around the boom shaft. In addition, the bucket can be rotated to any position or reversed, making it possible to use the shovel as a hoe, as well as ensuring that the bucket is loaded with soil and sand, and is effective against sticky soil. This improves work efficiency.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the inside of the work chamber of the first embodiment of the present invention, Fig. 2 is an explanatory diagram showing the relationship between the traveling rail and the traveling drive device same as above, and Fig. 3 is an explanatory diagram showing the traveling body and the traveling wheels. FIG. 4 is an explanatory diagram showing the relationship between the pincushion wheel and the traveling rail, FIG. 5 is an internal configuration diagram of the rotating section of the excavation device, and FIG. 6 is a second embodiment of the present invention. FIG. 7 shows a third embodiment of the invention. 4... Working room, 5 ₁ , 5 ₂ ... Rail base, 6
₁ , 6 ₂ ... Travel rail, 6a ... Gear, 7 ... Travel main body, 8 ... Travel drive device, 9 ... Hydraulic motor, 10 ... Pinion gear, 11, 11A, 11
B... Traveling wheel section.

Claims (1)

[Scope of Claims] 1. A pair of running rails fixed to the ceiling of a working room of a pneumatic caisson sunk underground, and a pair of running rails provided on at least one of these running rails,
A traveling drive device having a pinion gear that meshes with a gear having a tooth surface that is approximately perpendicular to the ceiling surface and is rotationally driven by a motor, and an excavator that travels via this travel drive device and can swing downward. A traveling body equipped with a device, a traveling wheel portion rotatably supported on the traveling body, and a traveling wheel portion provided on the traveling wheel portion, supporting the traveling rail, and capable of rolling in a substantially horizontal direction. An earth and sand excavator for a pneumatic caisson, characterized in that it is equipped with a plurality of pincushion type wheels. 2. A pair of running rails fixed to the ceiling side of the working room of the pneumatic caisson to be sunk underground, and a pair of running rails installed on at least one of these running rails,
A traveling drive device having a pinion gear that meshes with a gear having a tooth surface that is approximately perpendicular to the ceiling and is rotationally driven by a motor, and an excavation device that travels via this traveling drive device and is provided below. A pneumatic device comprising a plurality of pincushion-shaped wheels arranged on the traveling body in accordance with the curvature of the rail, and holding the traveling rail and capable of rolling in a substantially horizontal direction. Earth and sand excavation equipment for caisson. 3. A pair of running rails fixed to the ceiling side of the working room of the pneumatic caisson to be sunk underground, and a pair of running rails installed on at least one of these running rails,
A traveling drive device having a pinion gear that meshes with a gear having a tooth surface that is approximately perpendicular to the ceiling and is rotationally driven by a motor, and an excavation device that travels via this traveling drive device and is provided below. A pneumatic device characterized in that a traveling body is provided with wheels arranged along a traveling rail, and a plurality of pincushion-shaped wheels that hold the traveling rail and can roll in a substantially horizontal direction. Earth and sand excavation equipment for caisson. 4. The excavation device is configured to be able to rotate freely relative to the traveling main body, and has a telescopic boom that can be raised and lowered freely, and a rotatable bucket for excavating the earth is attached to the tip of the boom. 4. An earth and sand excavator for a pneumatic caisson having the characteristics of claim 1, 2 or 3, wherein the tip boom having the bucket is provided on a rotating part which freely rotates approximately around the boom axis.