JPH0128122Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rake device for an underwater working machine that prevents stones and the like from getting stuck in the rake.

Conventionally, in the rake device of an underwater working machine for flattening waste stones thrown into the water bottom, the base end of each rake a was fixed to a bracket b so that the tips of each rake a were at the same height, as shown in Figure 13A. . For this reason, as shown in Fig. 13B, it is easy for the thrown stones c to get caught between the rakes a, and the biting stones c cause the 13th
As shown in Figure C, there was a problem where the smoothed surface was roughened.

This invention was made for the purpose of improving this problem, and it provides a rake device for an underwater working machine in which the base end side of the rake can be rotated when the rake device is retreating, so that there are no stones between each rake. This is an attempt to prevent biting.

This invention will be described in detail below with reference to an illustrated embodiment. In the figure, 1 is the main body of an underwater working machine;
The movable leg frame 4 consists of a main body leg frame 3 having four telescopic legs 2 and a movable leg frame 4 that is movable with respect to the main body leg frame 3.
Also provided are four legs 5 which are extendable and retractable.
The main body leg frame 3 has a flat rectangular framework structure, and vertical frames 3a located on both sides.
The legs 2 are fixed in the vertical direction near the intersection of the horizontal frames 3b provided perpendicularly to the vertical frames 3a, so that the main body leg frames 3 are supported in a horizontal state by these legs 2. It's summery. Also, a vertical frame 3a is provided between the tops of the legs 2.
an upper frame 3c horizontally suspended in parallel with the
A slider 4a of a movable leg frame 4 is supported between the vertical frames 3a so as to be movable along the longitudinal direction of the vertical frame 3a. The movable leg frame 4 consists of the slider 4a, a horizontal frame 4b provided movably in a direction perpendicular to the slider 4a, and a vertical frame 4c connected between both ends of the horizontal frame 4b. 4
The leg body 5 is provided at the intersection of c.
A slide actuator ₆₁ is provided between the movable leg frame 4 and the main body leg frame 3, and the slider 4
There is an actuator 6 ₂ between a and the horizontal frame 4b.
are provided, and these actuators 6 ₁ ,
By repeating the reciprocating movement of the movable leg frame 4 by 6 ₂ and the expansion and contraction of the legs 2 and 5 provided on the movable leg frame 4 and the main body leg frame 3, the underwater working machine main body 1 moves forward and backward and in the lateral direction. is becoming possible.

On the other hand, a cart 7 is provided between the vertical frames 3a of the main body leg frame 3 and is movable along these vertical frames 3a. The trolley 7 has a plurality of wheels 8 on both ends thereof that touch the vertical frame 3a from above and below to support the load applied to the trolley 7, and
The cart 7 includes a rake device 11 that can be moved up and down by a lift cylinder 10, and a roller device 12 that compacts the waste stones leveled by the rake device 11. A working machine A is provided, and the roller device 12 is vertically movable by a lift cylinder 13.

The rake device 11 is a main rake 11 having a long length.
a, and an auxiliary rake 11b located between the main rakes 11a and approximately 1/2 l shorter than the interval 1 between the main rakes 11a, which are erected parallel to each other at intervals in the width direction. The upper ends of these rakes 11a and 11b are rotatably supported via pins 11e on a bracket 11d projecting from the rake support member 11c. Also each rake 1
Rake support member 1 is located approximately in the middle of 1a and 11b.
A substantially U-shaped guide member 11 protruding from 1c
f, and each rake 11a, 11b is supported in a substantially vertical state by these guide members 11f during operation, and if the tip of each rake 11a, 11b hits a stone when the truck 7 retreats,
The tips of each rake 11a, 11b are designed to be able to rotate upward about the pin 11e.

On the other hand, two winches 14 and 15 are installed at the front end of the main body leg frame 3, spaced apart in the width direction. Each of the winches 14 and 15 is powered by a hydraulic motor 1.
It has winding drums 14b, 15b for winding-in which are rotated by winding-up drums 14b, 15b for winding-in.
c is interlocked via a clutch 16. Further, the wire ropes 17 extending from the winding drums 14b and 15b for leveling are connected to pulleys 1 attached to the mutually opposing surfaces of the horizontal frame 3b and the truck 7, respectively.
8 and 19 several times, it is fixed to the side of the horizontal frame 3b, and return winding drums 14d and 15d are provided near each of the leveling winding drums 14b and 15b. There is. Each of the above-mentioned return winding drums 14d and 15d is a chain 2.
0, the above-mentioned winding drums 14b, 15 for break-in
The rotary shafts 14c and 15c of the rotary shaft 1b are interlocked with each other, and are rotated by hydraulic motors 14a and 15a.

Further, the wire rope 21 extended from the return winding drums 14d and 15d bypasses the pulley 22 installed at the rear end of the main body leg frame 3 and the pulley 23 installed at the rear of the truck 7, and then passes through the wire tensioner 24. It is tied to the tip of the adjusting rod 24a. The wire tensioner 24 has an outer cylinder 24b fixed to the rear end of the main body leg frame 3, and an inner cylinder 24d inside the outer cylinder 24b, which is biased rearward by a compression spring 24c. The other end side of the adjustment rod 24a passes through the center of the end plate of the inner cylinder 24d, and a nut 24 is screwed into the adjustment rod 24a.
By adjusting e, any tension can be applied to the wire rope 21.

In the figure, 25 indicates a detector for detecting the stroke of the truck 7, 26 indicates a float tank mounted on the front and rear of the main body leg frame 3, and 27 indicates a power supply cable.

Since this device is as described in detail above, even if a stone gets caught between the main rakes 11a during the leveling work, the short auxiliary rake 11b provided between each main rake 11a can remove the amount of stone that is caught between the main rakes 11a. is regulated as shown in Figure 12A, so when the rake device 11 moves forward, large stones will fall off due to the reaction force exerted on the tip of the stone, and small stones will fall off as shown in Figures 12B and C. Main rake 1
Since it does not protrude much beyond the tip of 1a, the smoothed surface will not be roughened by biting stones.

In addition, by making the tips of each rake 11a, 11b rotatable only forward, even if the tips of each rake 11a, 11b collide with the ground when the truck 7 is retreating, each rake 11a, 11b will not rotate as shown in FIG. As shown in the figure, since the rakes 11a and 11b escape upward, the leveling work can be performed again from the stroke end of the cart 7, improving work efficiency, and by removing the pins, each rake 11a, 11b can be easily Since they can be attached and detached, each rake 11a, 11b can be easily replaced.

[Brief explanation of the drawing]

The drawings show one embodiment of this device, and FIG. 1 is an overall front view, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the same, FIG. 4 is a plan view of this device, and FIG. is the same side view, FIG. 6 is a front view of the rake device, FIG. 7 is an enlarged front view of the main rake, FIG. 8 is the same side view, FIG. 9 is a sectional view taken along the line of FIG. The figure is number 8
11 and 12 are explanatory views of the operation, and FIGS. 13 A to C are explanatory views of a conventional rake device. 1 is the underwater working machine main body, 2 and 5 are the legs, 3 is the main body leg frame, 4 is the movable leg frame, 7 is the trolley, 1
1 is a rake device, 11a is a main rake, 11b is an auxiliary rake, 11e is a pin, 14 and 15 are winches, 14b and 15b are winding drums for leveling, 1
4d and 15d are winding drums for return, 17 and 21
is a wire rope, 20 is a chain, and 24 is a tensioner.

Claims (1)

[Scope of utility model registration request] The main body leg of the underwater working machine main body 1 moves on the water bottom while alternately expanding and contracting the legs 2 provided on the main body leg frame 3 and the legs 5 of the movable leg frame 4 that is movable with respect to the main body leg frame 3. A truck 7 having a rake device 11 is movably supported on the frame 3, and the truck 7 is wound onto winding drums 14b and 15b for leveling of winches 14 and 15 installed at one end side of the main body leg frame 3. The carriage 7 can be moved forward by the wire rope 17, and the carriage 7 can be returned by having one end wound around the return winding drums 14d and 15d of the winches 14 and 15, and the other end connected to the wire tensioner 24. In the case where the wire rope 21 is attached, each rake of the rake device 11 is connected to a long main rake 11.
a and short auxiliary rake 11b, which are arranged alternately, and each rake 11
A rake device for an underwater working machine, in which the base end of each rake 11a, 11b is pivotally connected by a pin 11e so that the rake 11a, 11b can be rotated only forward from a substantially vertical position.