JPH09238550A - Propulsion device for waterweed mowing ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize a pressure loss and to efficiently rotate a propeller in the case of diverting the hydraulic circuit for work of a waterweed mowing ship as a hydraulic source for propeller at the time of moving. SOLUTION: This device is provided with a propeller 39 for propulsion to be rotated by a hydraulic motor 40 to use a hydraulic pump 35 for work as the hydraulic source, and the motor 40 is connected through a switching valve 43 to this pump 35 at the position where oil discharged from the pump 35 before passing through hydraulic equipment for work can be let flow to the motor 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion device for a weed cutting boat for cutting and removing water plants that grow naturally in lakes and ponds.

[0002]

When a hydraulic pump for work of a weeding machine is used as a hydraulic source of a hydraulic motor for propulsion, and the weight and cost of the entire ship are reduced by simplifying the hydraulic mechanism, There are many work hydraulic devices that use a hydraulic pump as a hydraulic source, and in order to properly rotate a propulsion oil motor that shares a hydraulic source with a large number of these work hydraulic devices, it is necessary to wait until oil flows into the motor. Pressure loss must be kept to a minimum by reducing the number of valves that pass through.
The inlet pressure required for proper rotation of the motor cannot be obtained, and the boat speed is low.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention is provided with a propeller for propelling which is rotated by a hydraulic motor using a hydraulic pump for work as a hydraulic source, and is discharged from the pump and passes through hydraulic equipment for work. By connecting the motor to a pump through a switching valve at a position where the oil before flowing can be made to flow to the motor, the number of valves through which the oil passes before flowing into the motor is minimized, and pressure loss is reduced. Hold to a minimum. As a result, the inlet pressure necessary for proper rotation of the motor is sufficiently obtained, and the ship can be moved at high speed.
Increases work efficiency. Further, since the working hydraulic pump is properly used as the hydraulic power source of the motor, the weight of the entire ship can be reduced by simplifying the hydraulic mechanism, so that the speed of the ship can be increased easily and the cost can be reduced.

Further, by using a two-position switching valve, oil is constantly made to flow to the working hydraulic equipment side, and a switching operation is performed to switch the hydraulic circuit to the motor side, thereby operating in a place where there are no water plants. By switching the switching valve by stepping on the pedals etc. provided on the base with the foot, the hydraulic equipment for work is stopped, the propeller for propulsion rotates, and the ship can be moved swiftly. In some places, by releasing the foot from the pedal and returning the switching valve, the propeller stops, the hydraulic device for work moves, the work can be started quickly, and the operation is easy.

Further, by using a 3-position switching valve, oil is made to flow to the working hydraulic equipment side at the neutral position, and by switching operation to the other 2 positions, it is possible to switch the forward and backward movements of the oil to the motor side. The propeller for propelling can be used not only in the forward direction but also in the reverse direction by flowing the oil discharged from the motor to the working hydraulic equipment side and using it as the hydraulic oil. It is possible to stop suddenly and improve the maneuverability.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 are hydraulic circuit diagrams of a propulsion device for a weed cutting ship, FIG. 3 is an overall side view of a weed cutting ship, and FIG. 4 is a plan view of the same.
FIG. 5 is a front view of the same section, showing a water wheel type propulsion device (2) also serving as a steering wheel on both sides of a rear part of a pier (1) having a forked front end.
And a propeller-type propulsion device (3) at the bottom of the rear end of the pier (1). Further, an elevated cab (4) is provided on the pontoon (1) between the left and right water turbine type propulsion devices (2),
A driving operation column (5), a driver's seat (6), an engine section (7) and the like are provided on the driver's cab (4).

Further, a mowing device (9) is provided on the front side of the barge (1). As shown in FIG. 6, the reaping device (9) includes left and right side plates (10), a belt conveyor type first conveyor (11) provided between lower sides of the left and right side plates (10), and lower front ends of the left and right side plates (10). Between the clipper-shaped horizontal cutting blade (12) provided between the left and right side plates (10) and the left and right vertical cutting blades (13) provided at the front side of the left and right side plates (10), and above the first conveyor (11) between the left and right side plates (10). Take-up reel (14)
And

Left and right mowing mounts (15) are provided at the front two-pronged base ends of the barge (1), and both ends of a mowing lifting fulcrum shaft (16) stretched between the lower edges of the rear ends of the left and right side plates (10). Is rotatably supported on the upper surface of the left and right mounts (15), and the mowing device (9) is mounted on the front side of the berth (1) so as to be vertically movable.

The left and right lift arms (17) are stretched between both ends of the reaping / lowering fulcrum shaft (16) and the upper edges of the front ends of the left and right side plates (10), and the middle of the left and right lift arms (17) and the berth (1) are connected. A left and right reaping lifting hydraulic cylinder (18) is stretched between them, and the reaping device (9) is raised and lowered by the left and right hydraulic cylinders (18).

Left and right guide frames (19) for slidably supporting the left and right outer sides of the take-in reel (14) are provided,
The rear end sides of the left and right guide frames (19) are integrally connected by a reel lift fulcrum shaft (20), and both ends of the fulcrum shaft (20) are rotatably supported by an intermediate portion of the left and right lift arms (17). The take-up reel (14) is attached to the reaper (9) so as to be able to move up and down.

A left and right reel lifting hydraulic cylinder (21) is stretched between the rear part of the left and right guide frames (19) and the left and right side plates (10), and the take-up reel (14) is lifted and lowered by the left and right hydraulic cylinders (21). I am configuring.

Further, a fitting portion (22) slidably fitted to the left and right guide frames (19) is provided on the intermediate upper surface, and an end portion of the rotary shaft (23) of the reel (14) is provided on the front portion. A left and right slide frame (25) having a bearing (24) for movably fitting is provided, and the take-up reel (14) is slidably attached to the left and right guide frame (19) by the left and right slide frame (25). ing.

The left and right reel front and rear hydraulic cylinders () are provided between the left and right connecting plates (26) integrally connecting the rear ends of the left and right guide frames (19) to the fulcrum shaft (20) and the fitting portions (22) of the left and right slide frames (25). 27) is stretched and the take-up reel (14) is moved back and forth along the left and right guide frames (19) by the left and right hydraulic cylinders (27).

Then, for example, when cutting aquatic plants growing from the bottom of the lake, the horizontal cutting blade (1
While lowering the mowing device (9) so that 2) is located near the bottom of the lake, when mowing water plants floating on the lake surface, the horizontal cutting blade (12) is moved to the water surface as shown by the phantom line in FIG. Raise the mowing device (9) so that the mowing device (9) is located close to the first conveyor (11) with the take-up reel (14) with the mowing aquatic plants while mowing the aquatic plants with the cutting blades (12) (13) (13). It is configured so that the aquatic plants cut into the front end side bifurcated base end of the barge (1) can be pulled up by the first conveyor (11).

Belt conveyor type second and third conveyors (28) extending from the two-pronged base end to the rear end of the barge (1).
(29) are provided in series and the third conveyor (2
9) A belt conveyor type fourth conveyor (30) continuously provided at the rear end is provided, and the first conveyor (1) of the reaper (9) is provided.
1) Drop aquatic plants from the rear end to the front end side of the second conveyor (28), convey them to the fourth conveyor (30) via the second conveyor (28) and the third conveyor (29), and cut the aquatic plants. Carry out directly from the rear end of the 4th conveyor (30) to the ground,
It is configured so that it can be carried out to another aquatic plant carrier that shuttles to and from the ground.

The second conveyor (28) and the third conveyor (2
As shown in FIG. 7, it is connected with a fixed fulcrum (31), and the fourth conveyor (30) is rotated by the conveyor shaft (32) at the rear end of the third conveyor (29). The third conveyor (29) and the fourth conveyor (29) by the pulling operation of the left and right conveyor lifting hydraulic cylinders (33) connected to the vicinity of the rotation fulcrum axis of the fourth conveyor (30) and the action of the stopper (34). While the conveyor (30) is integrally lifted and lowered, the fourth cylinder (30) is folded and rotated by pushing the hydraulic cylinder (33).

Further, as shown in FIGS. 1 and 2, the above-mentioned first to third conveyors (11), (28) and (29), a horizontal cutting blade (12), a vertical cutting blade (13), and a take-up reel. For work having hydraulic motors for moving (14) respectively, and working hydraulic pumps (35) for supplying pressure oil to working hydraulic equipment such as the hydraulic cylinders (18) (21) (27) (33). Hydraulic circuit (A) and right and left water wheel type propulsion devices (2)
Hydraulic pump (38) for supplying pressure oil to each hydraulic motor (37) for rotating each paddle (36) of
And a hydraulic motor (40) for rotating the propeller (39) of the other propeller-type propulsion device (3) is installed in the working hydraulic circuit (A). The engine hydraulic pump (35) is used as a hydraulic power source of a hydraulic motor (40) for rotating a propeller (39) to reduce weight and cost by simplifying the hydraulic mechanism of the entire ship. 7)
Each hydraulic pump (3
5) (38) is rotated, and the hydraulic motor (40) is supplied to the discharge port (42) of the working hydraulic pump (35) via the switching valve (43) shown in FIG. 1 or the switching valve (44) shown in FIG. ) And a flow divider (45) are connected, and each work hydraulic device is connected to the end of the flow divider (45) through a shunt valve, a directional control valve, etc. to form the work hydraulic circuit (A). Is discharged from the work pump (35), and
The motor (40) is placed at a position where the oil before passing through the working hydraulic equipment can be flowed to the hydraulic motor (40).
The switching valve (43) shown in FIG. 1 or the switching valve (4) shown in FIG.
By connecting to the discharge port (43) of the pump (35) via 4), the number of valves that pass through the motor (40) is minimized (one) and pressure loss is minimized. are doing.

In the hydraulic circuit (B) for propulsion, a diversion valve (47) is connected to the discharge port (46) of the hydraulic motor (38), and each hydraulic motor is connected to each outlet of the diversion valve (47). (3
7) are connected to each other via a directional control valve (48), and the left and right paddles (36) are each configured to rotate in a freely rotatable direction.

The switching valve (43) shown in FIG. 1 is a switching valve with four ports and two positions, which is normally in the spring returning position, and allows the oil discharged from the hydraulic pump (35) to flow to the working hydraulic equipment side. ing. Then, by operating the operation pedal (49) arranged on the driver's cab (4), the oil is discharged from the hydraulic pump (35) to flow to the hydraulic motor (40) side, and the motor (40) is rotated in one direction. Then, the propeller (39) is rotated in one direction to move the ship forward.

On the other hand, the directional control valve (44) shown in FIG. 2 is a tandem center directional control valve with four ports and three positions, which is normally in the spring return neutral position, and the oil discharged from the hydraulic pump (35) is discharged from the tank port. It is flowing to the working hydraulic equipment side. And the operation pedal (4
By operating 9) to the front side or the rear side, the oil discharged from the hydraulic pump (35) is caused to flow to the hydraulic motor (40) side, and the motor (40) is normally or reversely rotated to turn the propeller (39) on. Forward or reverse rotation is performed to move the ship forward or backward, and return oil discharged from the motor (40) to the oil tank is caused to flow to the working hydraulic equipment side and used as hydraulic oil for these propellers ( 39) is used to move each working hydraulic device, and it is also possible to switch between forward and reverse.

As shown in FIG. 7, the paddle (36) during forward movement
The tip of the main blade (50) of the paddle (36) that has a receding angle with respect to the water surface in the direction of rotation of the paddle (36) is swept toward the water surface in the direction of rotation of the paddle (36) during reverse travel. The sub-blade (51) for reverse movement for holding water is fixedly provided, and a connecting plate (52) for sealing a triangular hollow between the tip of the main blade (50) and the sub-blade (51) is provided. If there is no blade (51), the main blade (50) enters the water with a rake angle when moving backward, so there is a lot of water jumping up, causing floating grass to flow away, and water to see water plants. Although it disappears and it becomes difficult to work, it can be solved by providing the auxiliary blade (51) and the work efficiency can be improved.

FIG. 8 shows a structure in which the same action and effect as the sub-blade (51) are obtained by making the tip portion of the main blade (50) shown in FIG. 7 swingable. ) Is provided with a swing fulcrum portion (53), and the swing fulcrum portion (5)
3) The tip side is formed on the movable main blade (54), and the tip of the movable blade (54) slides in an arc-shaped elongated hole (56) provided on the outer peripheral side of the side plate (55) of the paddle (36). By freely engaging and rocking the movable blade (54) with water pressure, water is made to enter at the same blade angle in both forward and reverse directions.

As shown in FIG. 10, rear floats (57) are provided behind the water wheel type propulsion devices (2) on the left and right of the pier (1) to increase the buoyancy when loading water plants. 57) The rear end of 57) is supported on the rear end of the pier (1) via a swing fulcrum (58), and a float raising hydraulic cylinder (59) and a descending hydraulic cylinder (59) are provided between the pier (1) and the float (57). A (return) spring (60) is stretched, and the cylinder (59) is extended by utilizing the forward (forward) operating oil of the hydraulic motor (40) of the propeller (39) for propulsion. The rear float (57) is raised above the draft while the propeller (39) is rotating to prevent the water flow of the paddle (36) during forward movement from hitting the rear float (57) and causing resistance. ing. When the propeller (39) stops and rotates in reverse, the spring (6
The cylinder (59) is contracted by 0), the lower part of the rear float (57) is put into water, and it works so as to increase the buoyancy of the rear part of the pier (1).

As shown in FIG. 11, the left and right side plates (10) of the mowing device (9) are divided into a main side plate (10a) and a sub side plate (10).
b) is divided and formed, and the main side plate (10a) is provided with a first conveyor (11), a horizontal cutting blade (12), a vertical cutting blade (13), and a connecting portion (17a) with the left and right lift arms (17). When the reaper (9) is lowered as shown by the solid line in FIG. 3 and is deeply immersed in water to mow aquatic plants growing in the water, the auxiliary side plate (10b) is bolted to the main side plate (10a). Then, the first conveyor (11) is used to prevent spillage of water plants when it is conveyed backward, while the reaper (9) is raised as shown by the phantom line in FIG. When removing the grass to remove the floating grass, remove the auxiliary side plate (10b) from the main side plate (10a) and remove the side plate (1
The surface area of 0) is reduced as much as possible to prevent the difficulty of maneuvering under the influence of cross wind.

As shown in FIG. 12, an indicator ball (62) is provided next to an index plate (61) standing on the front part of the lift arm (17) of the reaping device (9). 6
The rod (64) is attached to the sensor sled (63) for detecting the cutting height, in which 2) is swingably attached to the bottom of the front end side of the cutting device (9).
The height of the indicator ball (62) with respect to the indicator plate (61) from the driver's cab (4) is determined by determining the distance between the lake bottom and the cutting device (9), that is, the cutting height. Then
It prevents the mowing device (9) from sticking to the bottom of the lake.
As shown in FIG. 13, a tine (65) base end for indicating the sled position is attached to the upper part of the rod (64) so as to be vertically swingable through a swing fulcrum shaft (66), and the index plate (61 ), A pair of upper and lower locking rods (66) for locking the tip side of the tine (65) from above and below are attached through the elongated holes (67) so that the attachment position can be adjusted, and the tine (6
The base end of 5) is a switch operation arm (68a) made of a leaf spring.
And the tine (65) is elastically held substantially at right angles to the substantially vertical rod (64), that is, substantially horizontally, and the tip of the tine (65) is positioned between the vertical locking rods (66). When the upper and lower limit switches (68) are attached to the rod (64) and the tine (65) is horizontal, the sled (6
3) is horizontal and the cutting height is “standard”, and the tine (6
When the sled (5) is in the upward inclined state, the sled (63) hangs downward from the aquatic plant and the cutting height is "shallow" than "standard", and when the sled (63) is in the downward inclined state, the sled (6
3) is lifted above the aquatic plant, showing that the cutting height is “deeper” than “standard”, and is configured to clearly show the standard state compared to the indicator ball (62) alone. Further, the upper and lower limit switches (68) detect that the sled (63) is inclined to the deep side or the shallow side by a predetermined angle and the cutting height is deviated from the "standard" cutting height by a predetermined amount or more. 6
8) By controlling the electromagnetic switching valve of the reaper lifting hydraulic cylinder (18) based on the sensor sled (65) with
Automatic cutting height control, etc. that keeps the cutting height at "standard" can be performed.

As shown in FIG. 14, an aquatic plant carrier (69) is arranged in a row in the rear of the pontoon (1), and the aquatic plants (A) or rolls in a state of being piled up on the carrier vessel (69) from the rear end of the pedestal (1). In order to transship the aquatic plants (A) bundled with each other, fixing metal fittings (70) with the carrier ship (69) are provided on the left and right of the rear end side of the fourth conveyor (30), and the metal fittings (70) are attached to the carrier ship (70). 69)
At the time of the hook part (71) provided on the bow of the ship, the barge (1) and the carrier ship (69) are fixed, and the hook part (7) is fixed.
The storage space (7) for the net (73), which is a water plant carrier, is located below the upper plate (72) of the bow of the carrier ship (69) provided with 1).
4), and the nets (7) on both sides of the carrier (69).
A rope (75) for pulling 3) is provided, and by operating a winch (77) which is a drive source of the aquatic plant carrier attached to the upper end of a pole (76) which is erected at the rear of the carrier ship (69), The water plants (A) and (B) carried out from the rear end of the fourth conveyor (30) of the ship (1) to the front of the carrier ship (69) on the net (73) are sequentially transferred to the rear part of the carrier ship (69). Move to the direction and move the carrier (69) to water plants (A) (B)
It is configured to fill up with. As a result, the barge (1) and the carrier ship (69) are connected during the transshipment work of aquatic plants so that one person can work and the total length of the carrier ship can be lengthened to increase the loading capacity and the ship. The speed is improved.

FIG. 15 shows a belt conveyor type conveyor (7) which is an endless aquatic plant carrier on a carrier ship (69).
8) equipped with a sprocket shaft (80) linked to the conveyor shaft (79) at the rear end of the fourth conveyor (30) of the pier (1) by gear transmission and connected to the left and right rear parts of the fourth conveyor (30). The chassis (81) is provided so that it can be moved in and out, and the rotation of the output sprocket (82) on the sprocket shaft (80) is used to drive the transfer conveyor (78), and at the same time, the carrier (1) and the carrier ( 69) is fixed.

[0028]

As is apparent from the embodiments described above, the present invention provides a propeller (3) for propulsion which is rotated by a hydraulic motor (40) using a working hydraulic pump (35) as a hydraulic source.
9), is discharged from the pump (35), and
The oil before passing through the working hydraulic equipment is supplied to the motor (4
By connecting the motor (40) to the pump (35) via the switching valve (43) or (44) at a position where the oil can flow into the motor (0), oil can flow into the motor (35). Minimize the number of valves passing through and minimize pressure loss.
As a result, the inlet pressure required for proper rotation of the motor (35) is sufficiently obtained, the ship can be moved at high speed, and the work efficiency is increased. Working hydraulic pump (35)
Is properly used as the hydraulic power source of the motor (40), the weight of the entire ship is reduced by simplifying the hydraulic mechanism, so that the ship speed can be increased easily and the cost can be reduced.

Also, using a 2-position switching valve (43),
Oil is constantly flowed to the working hydraulic equipment side, and the switching operation is performed to switch the hydraulic circuit to the motor (40) side. Switch valve (43) by stepping on it with your foot
By switching operation, the working hydraulic equipment is stopped,
The propeller (39) for propulsion rotates to allow the boat to move quickly, and conversely where there are water plants, the pedal (4
By releasing the foot from 9) and returning the switching valve (43), the propeller (39) stops and the working hydraulic equipment moves,
Work can be started quickly and operation is easy.

Also, using a 3-position switching valve (44),
At the neutral position, the oil is made to flow to the working hydraulic device side, and by switching operation to the other two positions, the oil is made to flow to the motor (40) side so as to be switchable between forward and reverse, and discharged from the motor (40). The propelling propeller (39) can be used not only in the forward direction but also in the reverse direction by flowing the generated oil to the side of the hydraulic equipment for work and using it as the hydraulic oil. At the same time, the propeller (39) rotates in the reverse direction to make the ship suddenly move. It is possible to stop the ship and improve maneuverability.

[Brief description of drawings]

FIG. 1 is a hydraulic circuit diagram of a propulsion device for a weeding machine.

FIG. 2 is a hydraulic circuit diagram of the propulsion device of the water grass cutting ship.

FIG. 3 is an overall side view of a water weeding boat.

FIG. 4 is an overall plan view of a water weeding boat.

FIG. 5 is a cross-sectional front view of a water weeding boat.

FIG. 6 is a side view of the reaper.

FIG. 7 is a side view of the conveyor section.

FIG. 8 is a side view of the paddle portion.

FIG. 9 is a side view of the paddle portion.

FIG. 10 is a side view of the rear float portion.

FIG. 11 is a side view of the side plate of the mowing device.

FIG. 12 is a side view of a cutting height display section.

FIG. 13 is a partial rear view of the cutting height display section.

FIG. 14 is an explanatory view of transplanting aquatic plants.

FIG. 15 is an explanatory view of transplanting aquatic plants.

[Explanation of symbols]

 (35) Working hydraulic pump (39) Propulsion propeller (40) Hydraulic motor (43) (44) Switching valve

Claims (3)

[Claims] 1. A propulsion propeller that is rotated by a hydraulic motor that uses a working hydraulic pump as a hydraulic source, and allows the oil discharged from the pump and before passing through a working hydraulic device to flow to the motor. A propulsion device for a water weeding boat, wherein the motor is connected to a pump via a switching valve at a position where it can be moved. 2. A two-position switching valve is used, oil is constantly made to flow to the working hydraulic equipment side, and switching operation is performed,
The propulsion device for the water harvesting ship according to claim 1, wherein a hydraulic circuit is switched to the motor side. 3. A three-position switching valve is used to flow oil to the working hydraulic equipment side at the neutral position and switch operation to the other two positions so that oil can be switched between forward and reverse movements to the motor side. 2. A propulsion device for a weeding machine according to claim 1, wherein the oil is discharged from the motor and is used as hydraulic oil for the oil.