JPH0757957B2 - Sediment excavator for pneumatic caisson - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sediment digging device for a pneumatic caisson used in a working room such as a pneumatic caisson.

(Prior Art) Usually, a caisson is made of reinforced concrete on the ground and is installed at a predetermined place. While excavating and discharging earth and sand from the natural ground, the caisson body is sunk to a predetermined supporting ground by its own weight.

Such a caisson is configured in a rectangular shape, a circular shape, etc., a traveling rail is provided on the ceiling of a work chamber recently provided under the caisson, and an excavator is movably attached to the traveling rail for excavation. Is being done.

In this case, in order to thoroughly excavate the inside of the working chamber, it is necessary to configure the traveling rail attached to the ceiling with a straight line and a curvature corresponding to the traveling rail and move the excavating device along the traveling rail.

(1) Then, as a means for transmitting the driving force to the traveling wheels for moving the excavator, the one disclosed in Japanese Utility Model Publication No. 48-17448 has been proposed.

(2) Further, as a means for traveling without driving the traveling wheels, there is proposed one disclosed in Japanese Utility Model Publication No. 54-35521-22, which uses a rack and a pinion, a chain or the like.

(3) These traveling wheels are proposed in which the left and right wheels are fixed to one shaft.

(4) In addition, a conventional excavator, especially an overhead traveling type, is often used as a shovel type.

(Problems to be Solved by the Invention) (1) However, as shown in Japanese Utility Model Publication No. 48-17448, in the case of a type that directly transmits a driving force to traveling wheels, in the case of a rail having a radius of curvature, the inside and outside are It is possible that smooth running is difficult due to the difference in rail length, and if the caisson is tilted, it may be difficult to run only by driving due to the frictional force of the wheels.

(2) Drive by a rack and pinion or a chain becomes difficult in the case of a rail having a curvature, and an expensive device must be used to enable this.

(3) In the case where the wheels on both sides of one wheel are fixed, it becomes impossible to travel in the case of the curved rail.

(4) In the case of a shovel-type excavator that uses a conventional excavator for overhead traveling, it is difficult for the excavator to peel off due to highly viscous earth and sand.

There were drawbacks such as.

The present invention has been made in view of the above-mentioned various points, and the purpose thereof is not only straight lines and gentle curves, but also easy traveling even for rails with a small radius of curvature and for caisson inclination, It is intended to provide a sediment digging device for a pneumatic caisson having a digging device capable of sufficiently dealing with gravel excavation and viscous sediment.

(Means for Solving the Problems) In order to achieve the above object, the earth and sand excavating device for a pneumatic caisson according to the present invention includes (1) a set of traveling rails provided on a ceiling of a work chamber;
A gear or pin gear arranged along this traveling rail and as a tooth surface perpendicular to the ceiling surface, and a traveling drive device for rotating a pinion gear or a pinion pin sprocket that meshes with this gear or pin gear are provided,
The earth and sand excavating device for a pneumatic caisson, which comprises a traveling main body that can travel via the traveling rail and an excavation device that excavates the natural ground rotatably attached to the traveling main body.

(2) The earth and sand excavating device for a pneumatic caisson according to claim 1, wherein the traveling body is suspended on a traveling rail by a traveling wheel portion, and a curvature of the traveling wheel portion is matched with a curvature of the traveling rail.

(3) The traveling body is configured to be suspended on traveling rails by traveling wheel portions, and the traveling wheel portions are pivotally supported by front and rear sides of the traveling body, respectively.

(Operation) In the earth and sand excavator for pneumatic caisson configured as described above, the gear or pin gear is arranged so that the tooth surface is perpendicular to the ceiling surface of the working room, and the pin sprocket or gear that meshes with them is installed. The traveling main body is provided with the traveling main body that drives each pinion that meshes with each other, and the pin sprocket or the pinion gear is rotated by the rotational force of the traveling main drive to cause the traveling main body to travel.

Further, since the traveling wheel portion has a curvature or is independently mounted via the turning seat, the traveling rail can smoothly travel even if the radius of curvature of the traveling rail is small.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 11. 1 to 9 show the first embodiment, and FIG. 1 shows the whole structure of the earth and sand excavating device for pneumatic caisson, and FIG.
The figures are top views of the traveling unit, FIGS. 3 and 4 are side views and plan views of a traveling drive device using pins and pin sprockets, and FIGS. 5 and 6 are side views of the traveling drive device using pinion gears and gears. Drawing and a top view, Drawing 7 is a sectional view of a boom rotation part of an excavator, and Drawings 8 and 9 are side views showing the state of use of the earth and sand excavator for pneumatic caisson. Further, FIG. 10 is a top view of the traveling portion of the second embodiment of the present invention, and FIG. 11 is a top view of the traveling wheel portion of the third embodiment of the present invention.

(First Embodiment) FIG. 1, 1 ₁ and 1 ₂ are a set of two running rails. In this running rail 1 ₁ and 1 ₂ are standard dimension of approximately Engineering shaped steel, on one side is provided ribs 1a is at a predetermined interval. The running rail 1 ₁ and 1 ₂ at a predetermined position in the working chamber ceiling A pneumatic caisson, it has been installed toward the ribs 1a outwardly. This set of traveling rails 1 ₁ and 1 ₂
Between the running rails 1 ₁ and 1 ₂ drive rail 2 along the
Is provided. The drive rail 2 is the traveling rail.
1 ₁ and 1 standard dimension of a small substantially Engineering shaped steel for _two, on one side Yes and juxtaposed pin 2a provided vertically substantially at right angles to the ceiling surface, the the other hand side The ribs 2b are spaced apart from each other (see FIGS. 3 and 4).

Traveling body 5 which runs through the running rail 1 ₁ and 1 ₂ and above, as shown in FIG. 2, the running rail 1 ₁ and
It has a rectangular shape with a width extending over 1 ₂ and bearing parts for rotatably supporting the lower roller 7 are provided on the upper surfaces of both ends. The inner side of the bearing portion is provided with a protrusion protruding upward, on the side corresponding to the running rail 1 ₁ and 1 ₂ at the top of the protrusion is the upper roller 6 is rotatably . Moreover, alongside the upper roller 6, the side roller 8 rotating in web abuts the running rail 1 ₁ and 1 ₂ are provided. The upper circumferential surface of the roller 6 is running rail 1 ₁ and 1 ₂ of the flange surface of the back side abuts the outer peripheral surface of the lower roller 7 is in contact with the front flange surface of the running rail 1 ₁ and 1 _2, wherein the third roller 8 a traveling wheel portion B for running the traveling body 5 while sandwiching the traveling rails 1 ₁ and 1 ₂ by the the upper roller 6 in contact with the running rail 1 ₁ and 1 ₂ of the web and the lower roller 7 and the side roller 8 I am configuring. Such traveling wheel portions B are provided at four corners of the traveling main body 5, and the traveling main body 5 is supported by the traveling rails ₁₁ and 11 by the support of the traveling wheel portions B.
It is run across 1 ₂ .

Referring again to FIG. 1, a traveling motor 4 is provided on the projecting portion of the traveling main body 5, and the drive shaft of the traveling motor 4 is provided with a pin sprocket 3 that meshes with a pin 2a provided on the drive rail 2. The pin sprocket 3 is provided, and the pin sprocket 3 is rotated by the rotation of the traveling motor 4. As shown in FIGS. 3 and 4, the pin sprocket 3 rotated by meshing with the pin 2a of the attached drive rail 2 is , It acts so that the traveling main body 5, which fixes the traveling motor 4, travels.
This configuration is the traveling drive device D. This traveling drive device D
Shows a pin sprocket 3 and a pin 2a. This is, as shown in FIGS. 5 and 6, provided with a gear 2b instead of the pin 2a standing on the side surface of the driving rail 2, The pinion gear 22 meshing with the gear 2b is used as the traveling motor 4
It may be configured to be attached to.

A turning ring gear 9 shown in FIG. 1 is fixed to the lower surface side of the traveling main body 5 provided with the traveling drive device D.
A swivel bearing 13 is provided on the lower surface side of the swivel ring gear 9, and a swivel frame 12 is rotatably attached to the swivel ring gear 9 on the movable side of the swivel bearing 13. The revolving frame 12 is formed in a disc shape (see FIG. 2), a revolving motor 11 is fixed to the revolving frame 12, and a revolving pinion 10 is provided on a drive shaft of the revolving motor 11. There is. The turning pinion 10 is meshed with the turning ring gear 9, and the turning pinion 10 is configured to roll around the turning ring gear 9 by the rotation of the turning motor 11. Therefore, the rolling of the turning pinion 10 is caused by the turning frame 12
Will be rotated around the center of rotation of the slewing bearing 13.

The excavator E is attached to the lower surface of the revolving frame 12 configured as described above. This excavator E is the first
As shown in the figure, the mounting plate 21 fixed to the swivel frame 12
Telescopic boom case 15 of the excavator E via the engaging portion 21a of
Is rotatably attached. A support portion 14a is provided in front of the telescopic boom case 15, and the support portion 14a
Is a boom cylinder 14 connected to the swivel frame 12.
Is provided. By the operation of the boom cylinder 14, the telescopic boom case 15 is swung in the vertical direction with the engaging portion 21a as a fulcrum, and has a structure capable of undulating. A telescopic boom 16 is slidably provided in the telescopic boom case 15, and the telescopic boom 16 is slidably moved from the telescopic boom case 15 such that it can be projected and stored by hydraulic pressure or the like. Further, a tip boom 18 is provided at the tip of the telescopic boom 16 via a rotating portion 17.

The rotating part 17 rotates the tip boom 18 in the radial direction, that is, it freely rotates about the boom shaft, and has a structure shown in FIG. 16 in the figure
Is a telescopic boom, and a flange 23 is fixed to the end of the telescopic boom 16, and bolts 24 are provided around the flange 23.
An outer ring 25 is provided through the. On the other hand, a flange 27 is fixed to the end surface of the tip boom 18, and an inner ring 26 is provided around the flange 27 via a bolt 28. The inner ring 26 and the outer ring 25 are rotatably attached via balls. A gear 26a is provided on the inner diameter of the inner ring 26, and a pinion gear 30 is meshed with the gear 26a. The pinion gear 30 is attached to a drive shaft of a hydraulic motor 29 attached to the flange 23 of the telescopic boom 16. It is installed. The rotating portion 17 has the above-described configuration, and the hydraulic motor 29
By rotating, the tip boom 18 is rotated with respect to the telescopic boom 16 via the gear 26a. The tip boom 18 is provided with a bucket 20 operated by the bucket cylinder 19 shown in FIG.

The operation of the earth and sand excavating device for the pneumatic caisson having the above configuration will be described with reference to FIGS. 8 and 9.

The working chamber running rail 1 ₁ and 1 ₂ provided in the ceiling such as pneumatic caisson, traveling body 5 sent down suspended by the traveling wheel section B, by traveling drive device D provided on the traveling body 5, drive It travels according to the rail 2 and travels to a predetermined position.

Next, the turning motor 11 is operated to orient the excavator E in a predetermined direction, the boom cylinder 14 is operated to lower the tip boom 18, the telescopic boom 16 in the telescopic boom case 15 is moved in and out, and the bucket 20 of the bucket 20 is moved. The excavation is performed while adjusting the angle with the bucket cylinder 19. During this excavation, the rotating portion 17 can be operated to reverse the bucket 20 and operate as shown in FIG. As described above, the earth and sand excavating device for the pneumatic caisson according to the present invention includes the traveling rails ₁₁ and _12.
In the working room provided in, the excavator E can be moved in any direction and can be moved in any direction.

(Second Embodiment) The traveling wheel portion B is directly attached to the traveling main body 5, and the traveling wheel portion may be configured as shown in FIG. In other words, leave the running wheels part C running rail 1 ₁ and was combined bent into a _second radius of curvature, rotatably mounted a lower roller 7 at both end portions upper surface of the bent to the travel wheel unit C, the inner The upper roller 6 is provided in the direction,
Further, a side roller 8 is provided on the inner side.
With this configuration, the traveling main body 5 can travel extremely smoothly with respect to the traveling rail arranged with a constant radius of curvature.

The traveling main body 5 is provided with a traveling motor (not shown) and the like, and the traveling drive device and the like are the same as in the first embodiment.

(Third Embodiment) In the third embodiment, unlike the first and second embodiments described above, the traveling wheel portion is configured as shown in FIG. That is, the traveling wheel portion F is configured separately from the traveling main body 5, and the traveling wheel portion F can be rotated with respect to the traveling main body 5 by the turning seat 5A. This is the end of the traveling wheel portion F is lower roller 7 which engages on the front side of the flange surface of the running rail 1 ₁ and 1 ₂ is provided, the running rail 1 in the back side of the mounting position of the lower roller 7 upper roller 6 is provided to engage the back side of the ₁ and 1 ₂ of the flange face, side rollers 8 in the back side of the upper roller 6 are juxtaposed. The side rollers 8 is provided with so as to abut against the running rail 1 ₁ and 1 ₂ of the web, the structure is arranged parallel to the running rail 1 ₁ and 1 ₂ on the projecting portion on the body of the traveling wheel portion F A bearing for supporting the shaft is provided, and this bearing rotatably supports the side roller 8. At this time, the outer peripheral surface of the side rollers 8 are arranged so as to abut against the running rail 1 ₁ and 1 ₂ of the web.
Such, since the traveling body 5 a traveling wheel portion F provided with the upper and lower rollers 7 and side rollers 8 mounted via a swivel seat 5A, the running rail 1 ₁ and 1 ₂ is composed of any radius of curvature Even if it is carried out, it is possible to smoothly travel without removing the traveling main body 5 from the traveling rail.

(Effects of the Invention) The earth and sand excavating device for a pneumatic caisson of the present invention is, as described above in detail, (1) a set of traveling rails provided on the ceiling of the working chamber,
A gear or pin gear arranged along this traveling rail and having a tooth surface perpendicular to the ceiling surface, and a traveling drive device for rotating a pinion gear or a pinion sprocket meshing with this gear or pin gear are provided. Since the traveling main body that can travel via the rail and the excavation device for excavating the natural ground rotatably attached to the traveling main body are provided, not to mention a straight line, even if the rail has a small curvature, The running body can be run extremely smoothly.

(2) Further, since the traveling wheel portion and the traveling main body have the same curvature, and the traveling wheel portion and the traveling main body are linked by a swivel seat for rotationally connecting each other, Regardless of the above, the traveling main body has the effect of smoothly traveling.

[Brief description of drawings]

1 to 11 show an embodiment of the present invention, and FIGS. 1 to 9 show the first embodiment. FIG. 1 is an overall configuration diagram of the earth and sand excavating device for a pneumatic caisson, FIG. 2 is a top view of a traveling wheel portion, and FIGS. 3 and 4 are side views and plan views of a traveling drive device using pins and pin sprockets. 5 and 6 are a side view and a plan view of a traveling drive device using pinion gears and gears, FIG. 7 is a cross-sectional view of a boom rotating portion of an excavator, and FIGS. 8 and 9 are for pneumatic caisson. Side view showing the condition of use of the earth and sand excavator,
FIG. 10 is a top view of a traveling wheel unit according to the second embodiment of the present invention, and FIG.
The drawing is a top view of the traveling wheel portion of the third embodiment of the present invention. 1 ₁ , 1 ₂ ...... Traveling rail, 2 ...... Drive rail, 5 ...... Traveling body, 5 A ...... Swivel seat, 8 ...... Side rollers, 17 …… Rotating part, B, C, F …… Traveling wheels Part, D ... Running drive, E
...... Drilling equipment.

Front page continuation (72) Inventor Jiro Kakuda 1-24-4 Shinkawa, Chuo-ku, Tokyo Daitoyo Construction Co., Ltd. (72) Inventor Tetsuro Shintani 1-24-4 Shinkawa, Chuo-ku, Tokyo Daihoken Stock In-house (56) Bibliography Saku 50-77551 (JP, U) JK 60-2456 (JP, B2) JK 39-1105 (JP, Y1) JK 54-35522 (JP, Y2) )

Claims (3)

[Claims] 1. A set of traveling rails provided on a ceiling of a work room, a gear or pin gear arranged along the traveling rail and having a tooth surface perpendicular to the ceiling surface, and the gear or pin gear. A traveling drive device that rotates a pinion gear or a pinion pin sprocket that meshes with the traveling body is provided that is capable of traveling via the traveling rail, and an excavation device that excavates the natural ground that is rotatably attached to the traveling body. Sediment excavator for pneumatic caisson characterized by being equipped. 2. The earth caving for pneumatic caisson according to claim 1, wherein the traveling body is suspended on a traveling rail by traveling wheel portions, and the curvature of the traveling wheel portion is matched with the curvature of the traveling rail. apparatus. 3. The earth and sand excavating device for a pneumatic caisson as claimed in claim 1, wherein the traveling body is suspended by traveling wheel portions on a traveling rail, and the traveling wheel portions are pivotally supported by front and rear sides of the traveling body, respectively. .