JPH11229336A - Ground surface scavenger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve performance by crushing thrown-in twigs with a movable knife fitted to the back face of a rotary disc of a blower and a fixed knife provided on a blower casing. SOLUTION: A ground surface scavenger A is formed by a rotary brush B, a hammer knife rotor H and a blower C, and towed by a tractor. The blower C is so constructed that a movable knife is provided on the back of a rotary disc provided with a blower blade 25, a twig throw-in slot is formed in the opposite area of the blower casing 15 to the rotary disc, and a fixed knife is provided on the peripheral edge. At the time of scavenging, dust cleaned by a brush B and twigs crushed by the knife H are sucked by the blower C to be stored in the tractor through a flexible duct. A large twig is thrown into the twig throw-in slot to be crushed by the rotary knife and the fixed knife, and released to the front of the rotary disc to be sucked. In the case where the scavenger is disabled to run by trees or the like, a bottom opening 20b of an air flow switching chamber 20 is closed by a damper plate 46, and dust is sucked by a hose connected to a hose connecting pipe 45 during walking. Thus, the ground surface can be surely scavenged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tractor which is towed by a towing vehicle to crush branches and leaves such as trees and leaves scattered on the ground surface and to combine the crushed pieces with other garbage. And a ground surface cleaning machine configured to suction and collect in a garbage storage box mounted on the towing vehicle.More specifically, it is possible to crush large branches that cannot be crushed by a rotating body of a hammer knife provided in the cleaning machine. The present invention relates to a ground surface cleaner capable of cleaning a portion where a cleaner cannot enter due to obstacles such as trees or trees.

[0002]

2. Description of the Related Art As one of lawn surface cleaning machines for cleaning a lawn surface, a rotary brush is mounted in a casing integrally mounted on an airframe, and a blower device is mounted above the casing. While being towed by the rotating brush, the rotary brush scrapes out garbage scattered on the lawn surface, or hay that has bitten into the lawn, and is sucked by the blower device and mounted on the towing vehicle. There is a configuration in which a lawn is cleaned by being sent into a grass collection box, and is often used for cleaning a lawn such as a golf course.

[0003] In the lawn surface cleaning machine having the above-described structure, dusts scattered on the lawn surface or hay grasses engulfed in the lawn are scraped out by the rotating brush, but are cut off from surrounding trees. In the case where branches such as branches and leaves are scattered on the lawn surface, the branches need to be removed manually, and the cleaning cannot be entirely performed by the lawn surface cleaning machine alone.

In view of the above, the present applicant has proposed a conventional lawn surface cleaning machine, in which a hammer knife rotating body having a large number of hammer knives attached to a hammer shaft is used together with a rotating brush.
Developed a ground surface cleaning machine that was installed in front of it and crushed the branches by the rotating body of the hammer knife so that it could be sucked together with other garbage. Patented on January 21, 1998 Filed. According to this ground surface cleaning machine, it can be used not only on lawn surfaces but also on general road surfaces, etc. Although it is a periodical thing, some branches scattered on the road surface after passing a typhoon or the like are considerably large, and some branches cannot be crushed only by the high-speed upper rotation of the hammer knife rotating body. Also,
The above-mentioned ground surface cleaner can run only on a flat part without obstacles such as trees, and cannot clean a part with obstacles of the cleaner such as trees.

[0005]

SUMMARY OF THE INVENTION A first object of the present invention is to provide a ground surface cleaning machine capable of crushing and recovering branches by a hammer knife rotating body, and a large branch which cannot be broken by the hammer knife rotating body alone. A second challenge is to enable cleaning of parts where there is an obstacle and the cleaner cannot travel.

[0006]

Means for Solving the Problems In order to solve the first problem, a means adopted by the present invention is a rotating brush disposed in a main casing integrally mounted on a machine body with a lower surface serving as a cleaning opening. A number of hammer knives attached to the hammer shaft, a hammer knife rotating body disposed in front of the rotating brush in the main casing, and an upper portion thereof for generating suction airflow in the main casing. And a blower device attached to and attached to the hammer knife, while being towed by a towing vehicle, crushes the branches scattered on the ground surface by the high-speed upper rotation of the hammer knife rotating body, and the same as the rotating brush. The garbage including the crushed garbage is scooped upward by the rotation of the blower, and the crushed pieces of the branches and the garbage are put together by the suction force of the blower device, and the flexible duct In a ground surface cleaning machine configured to collect in a garbage storage box of a towing vehicle via a rotator, the blower device has a configuration in which a plurality of blower blades are attached to a front surface of a rotating disk, and a back surface of the rotating disk. A movable blade is mounted on the side of the blower casing, a branch inlet is provided at a portion of the blower casing opposite to the rotating disk, and a fixed blade forming a pair with the movable blade is mounted on the periphery of the inlet.

[0007] The movable blade mounted on the back of the rotating disk of the blower device rotates at high speed by the blower device, and the branches introduced into the blower casing from the branch inlet through the charging hopper are rotated at high speed. Crushed pieces in the blower casing by the movable blade and the fixed blade attached to the blower casing, and crushed pieces of other branches or the like crushed by the hammer knife rotating body by the blowing pressure as it is, or Together with other garbage, the garbage is sent through a flexible duct into a garbage container mounted on a towing vehicle and collected. For this reason, it becomes possible to crush large branches which cannot be crushed by the hammer knife rotating body.

[0008] In order to solve the second problem, a means adopted by the present invention is a rotating brush disposed in a main casing integrally mounted on the machine body with a lower surface serving as a cleaning opening; To generate a suction airflow inside
With a blower device connected to and mounted on the upper part,
While being towed by the towing vehicle, the high-speed upper rotation of the rotating brush scoops up garbage upwards and collects the garbage in the garbage storage box of the towing vehicle via the flexible duct by the suction force of the blower device. In the ground surface cleaning machine having the above configuration, an air flow switching chamber provided at a connection portion of the main casing with the blower device is connected to the air flow switching chamber for connecting a branch hose and a suction hose for sucking dust. A hose connection tube provided, and an interior of the airflow switching chamber for switching the direction so that the suction airflow of the blower device reaches one of the hose connection tube and a cleaning opening on the lower surface of the main casing. And a damper plate.

The rotation of the damper plate housed in the airflow switching chamber prevents the suction airflow generated by the high-speed rotation of the blower device from reaching the cleaning opening on the lower surface of the main casing, and connects the suction airflow to the hose connection. It can affect only the side of the suction hose connected to the tube. For this reason, when the airframe is stopped and dusts scattered on the ground surface are sucked at the tip of the suction hose, the dusts are sent into the dust container through the blower unit. Collected.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by way of examples. FIG. 1 is a perspective view of the ground surface cleaning device A according to the present invention in a use state as viewed obliquely from the rear. FIG. 2 is a perspective view of the ground surface cleaning device A as viewed obliquely from the front. Is a side view of the ground surface cleaner A, and FIG.
FIG. 5 is also a plan view, and FIG.
FIG. 6 is a front view of the ground surface cleaning machine A mainly showing FIG.
FIG. 7 is an explanatory diagram of a cleaning operation of the ground surface cleaning device A, and FIG. 7 is an enlarged view of a portion of the hammer knife rotating body H in FIG. The ground surface cleaning device A according to the present invention is towed by a towing vehicle P (a small truck in the embodiment) and travels to break branches and the like scattered on the ground surface such as a lawn surface into small pieces. With the suction hose V in a state where the cleaner is sucked together with the garbage or the machine body 1 is stopped, there is an obstacle such as a tree to clean a portion where the cleaner cannot enter. A rotating brush B, a hammer knife rotating body H, and a blower device C are mounted on a frame-shaped body 1.

As shown in FIGS. 1 to 4, a pair of front wheels 2 are provided at both ends of a front portion of a frame-shaped body 1.
The mounting height is adjustable with respect to. That is, the rod 3a of the front wheel support 3, to which the front wheel 2 is attached at the lower end, is inserted through the guide cylinders 4 provided at both ends of the front part of the body 1, and is guided through the connecting pins (not shown). The rod 3a of the front wheel support 3 is connected to the cylinder 4, and the height of the front wheel 2 relative to the body 1 is determined by adjusting the connection position of the rod 3a to the guide cylinder 4. Further, a pair of rear wheels 5 are attached to both ends of a portion slightly behind the center in the front-rear direction of the body 1.

As shown in FIGS. 3 and 4, a rotating shaft 6 is rotatable at the rear of the body 1 and supported along the width direction of the body 1, and the rotating shaft 6 The rear wheel mounting arms 7 are integrally fixed to both end portions of the rearwardly and forwardly, respectively.
The rear wheel 5 is mounted on each rear wheel mounting arm 7.
An adjustment pipe 9 is rotatably supported by a bracket 8 at a rear end of the body 1, and a part of a pull pipe 11 is inserted into a tip end of the adjustment pipe 9. Is configured such that a screw rod (not shown) provided inside the adjustment pipe 9 is rotated by the rotating handle 12 so as to enter and exit the adjustment pipe 9. The distal end of the pull pipe 11 is connected to a bracket 13 fixed to the rotation shaft 6. For this reason, as shown in FIG. 8, when the pulling pipe 11 is moved in and out of the adjusting pipe 9 by the rotation of the rotating handle 12, the rotating shaft 6 is rotated, and the rear wheel mounting arms are provided at both ends thereof. Each rear wheel 5 attached via the
, The height of which is adjusted. In FIG. 8, the state shown by a two-dot chain line indicates a non-working state in which the rear wheel 5 is lowered with respect to the body 1, and the state shown by a one-dot chain line is
Indicates a raised working state.

As shown in FIGS. 3, 4 and 6, the main body 1 is provided with a main casing 14 having a cleaning opening on the lower surface. The main casing 14 has a shape that protrudes greatly to the upper part of the fuselage 1, and its central portion in the width direction is provided at the highest position, and switches the direction of the suction airflow generated by the blower device C. The air flow switching chamber 20 is provided.

As shown in FIG. 6, a rotary brush B is disposed in a portion of the main casing 14 immediately before the rear wheel 5, and both ends of a brush shaft 10 of the body 1 A hammer knife rotating body H is supported by a support plate (not shown) suspended from the side frame members 1a at both ends in the width direction and immediately before the rotating brush B in the main casing 14. In the rotating brush B, a large number of brush bristles 16 are radially attached to the brush shaft 10 over the entire length in the axial direction, and the high-speed upper rotation scoops up garbage scattered on the grass surface, or In this configuration, hay and grasses that have been eaten into the lawn are scraped out and scooped up. On the other hand, as shown in FIGS. 5 to 7, both ends of the hammer knife rotating body H are supported by a support plate 18 suspended from the side frame member 1a of the body 1 as shown in FIGS. A large number of disk-shaped knife mounting plates 19 are fixed to the hammer shaft 17 at predetermined intervals along the axial direction, and a plurality of hammer knives 21 are mounted on each of the knife mounting plates 19. The hammer knife 21 is rotatably connected at its base end to a knife mounting plate 19 via a connecting pin 22. The hammer knife 21 is directed in a radial direction by centrifugal force caused by the high-speed upper rotation of the hammer shaft 17, and is provided with tree branches. S (see FIGS. 1 and 6), as shown by the two-dot chain line in FIG.
9, the hammer knife 21 is rotated, and the branches S
Is crushed by an impact force.

In the blower device C, a blower blade 25 that rotates about a horizontal rotation shaft 24 is disposed in a blower casing 15. The rotation of the blower blade 25 causes the blower blade 25 to rotate in the main casing 14 or a hose described later. At the same time as generating a suction airflow in one of the suction hoses V connected to the connection pipe 45, the blower casing 1
5 is connected to the blower side connecting pipe 26 (FIG. 1).
And FIG. 2).
The blower-side connection pipe 26 is bent forward of the body 1.

As shown in FIGS. 3 and 4, a towed bracket 27 is provided at the center of the front frame 1b of the body 1 toward the front, and the towed bracket 27 is attached to the towed bracket 28. Are connected via a connecting pin 29,
The leading end of the tow rod 28 is a connecting portion 28a that is bent so as to be substantially horizontal in a use state, and the towing rod 28 is formed of a small truck at the connecting portion 28a at the tip. It is connected to a connecting tool D mounted on the rear part of the towing vehicle P. As shown in FIG. 9, the connecting tool D is attached to the rear plate 30a of the bed 30 of the towing vehicle P by the fixing tool 3
1 and fixed via the fixing bar 32. Then, a connection ring 28 b provided on a connection portion 28 a of the tow rod 28 is connected to the connection tool D via a connection pin 40. In a state where the tow rod 28 is connected to the connection tool D, the tow rod 28 can freely rotate up and down and left and right. Therefore, even when turning or traveling on an inclined ground, the cleaning machine A is towed without trouble. You. As a result, the ground surface cleaning machine A is towed by the towing vehicle P and travels on a lawn surface or the like while the body 1 is supported by the pair of front wheels 2 and the pair of rear wheels 5. As shown in FIG. 1, a hood-shaped garbage storage box 33 is mounted on the luggage carrier 30 of the light truck as the towing vehicle P, and a storage box side connection is provided on the rear surface of the garbage storage box 33. A pipe 34 is attached, and the storage box side connecting pipe 34
And the blower-side connection pipe 26 connected to the blower casing 15 are connected via a flexible duct 35.

Next, referring to FIGS. 10 to 13,
The configuration of the blower device C will be described in more detail. The horizontal rotation shaft 24 is supported via a bearing 37 on a bearing housing 36 fixed to the rear side of the blower casing 15, and the tip end thereof enters the blower casing 15. A rotating disk 38 is attached to a portion of the horizontal rotating shaft 24 that enters the blower casing 15, and a plurality of blower blades 25 are attached to the front surface of the rotating disk 38. FIG.
As shown in FIG. 13, a pair of movable blades 39 are attached to the back side of the rotating disk 38 at positions symmetrical with respect to the center of rotation of the rotating disk 38 substantially in the radial direction. A branch input port 41 is provided substantially horizontally at a portion of the casing 15 facing the rotating disk 38, and a fixed blade 42 paired with the movable blade 39 is attached to the lower edge of the input port 41 substantially horizontally. Have been. Further, on the back side of the blower casing 15, a charging hopper 43 for facilitating the charging of the branches S into the branch charging port 41 is provided. Further, a discharge hole 44 for discharging crushed pieces Sa of the branches S to the front side of the rotary disk 38 is provided in a portion of the rotary disk 38 immediately below the movable blade 39.
For this reason, the branches S large enough not to be crushed by the hammer knife rotating body H are thrown in from the feeding hopper 43 and crushed into small pieces by the shearing action of the movable blade 39 and the fixed blade 42. That is, when the branches S fed from the charging hopper 43 reach the branch inlet 41, the branches S are fixed to the movable blade 39 rotating at a high speed and the fixed blade fixed to the blower casing 15. The crushed pieces Sa are crushed into small pieces by the shearing action with the blower 42, and the crushed pieces Sa pass through the discharge holes 44 and blower blades 2 on the front surface of the rotating disk 38.
5 is discharged to the space where the 5 is disposed.

As shown in FIG. 6, a hose connecting pipe 45 for connecting a suction hose V is provided in front of the air flow switching chamber 20 at the upper end of the main casing 14, and the air flow A damper plate 46 is rotatably provided inside the switching chamber 20.
6, when the front opening 20a of the airflow switching chamber 20 is closed, suction air flows into the main casing 14, and when the bottom opening 20b of the airflow switching chamber 20 is closed by the damper plate 46, the suction air connected to the hose connection pipe 45. Hose V
The suction airflow reaches the part. That is, FIG.
4 and FIG. 15, the lower end of the damper plate 46 is fixed to the pivot rod 47,
The pivot rod 47 is supported by the air flow switching chamber 20 at the upper end of the main casing 14, and both ends of the rotating rod 47 protrude greatly on both sides of the air flow switching chamber 20. The L-shaped operation handle 48 is fixed,
The rotation operation of the damper plate 46 housed in the airflow switching chamber 20 of the main casing 14 is facilitated. 14 and 15, reference numeral 49 denotes a front opening 20a or a bottom opening 20b of the airflow switching chamber 20 formed by the damper plate 46.
7 shows a tension spring for holding any one of the closed states.

An engine E is mounted at the rear of the body 1, and the motive power drives the rotary brush B, the hammer knife rotating body H and the blower device C mounted on the body 1, and the drive is performed by this drive. The system will be briefly described. 16 and 17, the drive shaft 51 of the engine E extends along the width direction of the body 1 and two pulleys 52 and 53 are attached to the drive shaft 51 and installed on the rear side of the blower device C. A pulley 56 is attached to a gear shaft 55 a of one bevel gear 55 of the bevel gear device 54, and a belt 57 is mounted between the pulley 56 and the pulley 52, and a gear shaft 58 a of the other bevel gear 58 of the bevel gear device 54. However, the rotary disk 38 is attached to the horizontal rotary shaft 24 of the blower device C, and the power of the engine E is transmitted to the bevel gear 58 via the transmission path, The blower blade 25 attached to the front of the rotating disk 38 rotates at high speed.

Further, an intermediate shaft 59 is provided in the machine body 1 in the width direction, and a pulley 61 attached to one end of the intermediate shaft 59 and another pulley 53 attached to the drive shaft 51 are connected. A belt 62 is interposed between the belts. Also, two pulleys 63 and 64 are provided at the other end of the intermediate shaft 59.
A belt 66 is mounted between a pulley 65 attached to the brush shaft 10 of the rotating brush B and the pulley 63, and is attached to the hammer shaft 17 of the hammer knife rotating body H. Pulley 67
And a belt 68 is mounted between the pulley 64 and
The power of the engine E is transmitted to the rotary brush B and the hammer knife rotating body H via the intermediate shaft 59, and these rotate at high speed.

Each belt 57 for transmitting the power of the engine E to the bevel gear device 54 and the intermediate shaft 59,
62 denotes first and second tension rollers 6 respectively.
The tension is applied by the first and second tension rollers 9 and 71 so that power can be transmitted.
The first and second clutches 9 and 71 are moved by first and second clutches 72 and 73 to transmit power and cut off the power. With reference to FIGS. 18 to 22, a mechanism in which power is transmitted and cut off by the first and second clutches 72 and 73 will be briefly described. The first and second clutches 72 and 73 have the same axis and are integrally mounted on first and second operation shafts 74a and 74b which are separated from each other and can rotate independently. The first tension roller shaft 75 and the intermediate shaft 76 have the same structure as the first and second operation shafts 74a and 74b, have the same shaft center, are separated from each other, and can rotate independently. The first operation shaft 74a and the first tension roller shaft 75 are connected via a link 77, and the second operation shaft 74b and the intermediate shaft 76 are connected to the link 7
8 are connected. The intermediate shaft 76 and the second tension roller shaft 79 are connected via a link 81. The first and second tension roller shafts 75,
79, the first and second tension rollers 6 respectively.
9, 71 are attached.

Therefore, the first and second clutches 72,
When both of them are “OFF”, as shown in FIG. 19, the first and second tension rollers 69, 7
1 is apart from the belts 57 and 62, and the power of the engine E is not transmitted to either the blower device C or the rotating brush B. When only the first clutch 72 is turned “ON”, tension is applied only to the belt 57 by the first tension roller 69, as shown in FIG. And transmitted only to the horizontal rotation shaft 24 of the blower device C via the blower device C. Further, when both the first and second clutches 72 and 73 are turned “ON”, as shown in FIG.
The power of the engine E is transmitted to the horizontal rotating shaft 24 of the blower device C via the belt 57, and
To both the rotating brush B and the hammer knife rotating body H.

Subsequently, the operation of cleaning the lawn surface L on which the branches S of trees are scattered by using the cleaning machine A will be described. First, the heights of the front wheel 2 and the rear wheel 5 with respect to the body 1 are adjusted by the above-described methods, and the optimum positions of the rotating brush B and the hammer knife rotating body H from the grass surface L are selected. In this case,
The hammer knife rotating body H has a function of crushing the branches S scattered on the grass surface L, and the rotating brush B bites into garbage scattered on the grass surface L or into the grass. As shown in FIG. 6, the rotating brush B needs to have its brush bristles 16 penetrated into the lawn, and has a function of scooping up the hay or grasses U. Needs to be such that the tip of the hammer knife 21 contacts the surface of the lawn. For this reason, the lowermost part of the rotating body H of the hammer knife is slightly higher than that of the rotating brush B.

The branches S scattered on the grass surface L
When crushing is performed, as shown in FIG. 6, the damper plate 46 is erected, the front opening 20a of the airflow switching chamber 20 is closed, and the bottom opening 20b is opened. Also, the first and second clutches 72, 73
Are turned ON, the power of the engine E is transmitted to the blower device C, and the blower blades 25 are rotated at high speed to generate a suction airflow in the main casing 14 and at the same time, the blower-side connecting pipe 26 is turned on. Is generated, and the power is transmitted to the rotating brush B and the hammer knife rotating body H to rotate them at high speed. Here, the hammer knife rotating body H is 31
It rotates at about 00 rpm, and its peripheral speed is
m / sec is preferable. On the other hand, the rotating brush B is 800
Rotating at about rpm, the peripheral speed of the outer peripheral part is 13m / se
It is preferably about c.

Then, as shown in FIGS. 1 and 6,
When the cleaning machine A is towed by the towing vehicle P at a low speed,
The branches S scattered on the lawn surface L are crushed into small pieces and lifted upward by the impact of a large number of the hammer knives 21 of the hammer knife rotating body H rotating at a high speed. Since the hammer knife rotating body H and the rotating brush B are both disposed in the main casing 14 to which the suction air flow is applied, the crushed pieces Sa of the branches S crushed by the hammer knife 21 are:
After being sucked above the main casing 14 by the suction airflow and passing through the airflow switching chamber 20 and the blower device C, the blower-side connection pipe 26
It is sent to the side.

On the other hand, general garbage T scattered on the lawn surface L, or hay grass U eating in the lawn, and crushed garbage generated by the crushing action of the rotating body H of the hammer knife, Is lifted upward by the high-speed rotation of the rotating brush B, and is sucked upward by the suction airflow extending into the main cane sig 14, so that the airflow switching chamber 2
After passing through the blower device 0 and the blower device C, the air is sent to the blower-side connection pipe 26 by the blowing airflow. The cleaning action of the lawn surface L by the rotating brush B and the crushing action of the branches S by the hammer knife rotating body H are as follows.
Since they are performed at the same time, the crushed pieces Sa of the branches S and other garbage are sucked together above the main casing 14. Then, due to the airflow of the blower device C, the crushed pieces Sa of the branches S and other garbage that have passed through the portion of the blower device C pass through the flexible duct 35 and are mounted on the bed 30 of the towing vehicle P. The garbage is sent to the garbage storage box 33 and stored.

Most of the branches S are crushed into crushed pieces Sa by the high-speed upper rotation of the hammer knife rotating body H and are collected by suction. In the case of particularly large branches S, the hammer is used. In some cases, the crushing may not be performed only by the rotation of the knife rotating body H. In this case, as shown in FIG. 1, when the worker M picks up the large branches S from the lawn surface L and puts them into the loading hopper 43 fixed to the rear side of the blower casing 15, the branch inlet 41 Are reached by the movable blade 39 rotating at a high speed.
And the fixed blade 4 fixed to the blower casing 15
2 is finely crushed by the shearing action with
8 through a discharge hole 44 provided directly below the movable blade 39, and is discharged to a space on the front side of the rotating disk 38.
In this manner, the crushed pieces Sa of the branches S released into the space in front of the rotating disk 38 are supplied to the large number of blower blades 2.
5 together with other crushed pieces Sa and other debris crushed by the hammer knife rotating body H, were sent to the blower-side connecting pipe 26 side, and mounted on the towing vehicle P. It is stored in the trash storage box 33.

In the case where a part where the cleaning machine cannot travel due to the growth of a large tree or the like is to be cleaned, FIG.
23, the body 1 is stopped, only the first clutch 72 is turned “ON”, and the power of the engine E is transmitted only to the blower device C, and only the blower device C is connected. Activate. Further, the damper plate 46 is tilted to close the bottom opening 20b of the airflow switching chamber 20, and the front opening 20a thereof is opened.
Is connected to one end of the suction hose V. Thereby, the suction force of the blower device C reaches only the suction hose V side and does not reach the main casing 14 side. Then, as shown in FIG. 22, when the worker M holds the distal end portion of the suction hose V and touches the distal end opening of the hose V to the ground surface, the suction airflow reaching the portion causes the ground surface to move. Is discharged into the hose V. The garbage T sucked by the hose V is sucked up to the blower unit C, and thereafter, the garbage mounted on the towing vehicle P passes through the flexible duct 35 by the airflow from the blower unit C. It is stored in the storage box 33.

When the ground surface cleaner A is not in operation, the height of the rear wheel 5 with respect to the body 1 is reduced by operating the rotary handle 12 as shown by a two-dot chain line in FIG.
The rotating brush B is caused to travel on a road surface or the like in a state where it does not contact the ground surface.

Further, in the above embodiment, the suction hose V is connected to the ground surface cleaning machine having the hammer knife rotating body H,
This is an example in which it is possible to clean a portion where the cleaning machine cannot travel. When this suction hose V is used, the suction hose V is provided with only a rotating brush, and the cleaning device is not provided with the hammer knife rotating body H. By connecting the hose V, it is also possible to clean the portion where the cleaner cannot travel. Further, in the above embodiment, the cleaning of the lawn surface L in which the branches S of the surrounding trees are cut off and scattered has been described. For example, after the typhoon, the branches scattered on the road surface are crushed. In addition, the present invention can be used for cleaning the road surface, and can be used for any ground surface cleaning as long as the ground surface cleaning device A can run.

[0031]

According to the ground surface cleaning apparatus of the present invention, large branches which cannot be crushed by the provided rotary body of the hammer knife are thrown in from the throwing hopper mounted on the back of the blower casing, and are blown. The rotating blade attached to the back side of the rotating disk of the device and rotating at high speed, and the fixed blade fixed opposite to the rotating blade on the back side of the blower casing, are crushed into small pieces, Along with crushed pieces of other branches or garbage that has been scooped up by a rotating brush, they are mounted on a towing vehicle via a flexible duct by the blowing action of a blower device. It is sent to the collected trash box and collected. For this reason, the ground surface on which branches are scattered can be reliably cleaned.

According to the second aspect of the present invention, the suction force of the blower device is applied to the suction hose connected to the airflow switching chamber by the rotation of the damper plate provided in the airflow switching chamber. Thus, dusts scattered on the ground surface at the tip opening of the suction hose can be suctioned and collected. Therefore, it is possible to reliably clean a portion where the cleaner cannot travel due to an obstacle such as a tree.

[Brief description of the drawings]

FIG. 1 illustrates a ground surface cleaning machine A according to the present invention in use.
FIG. 5 is a perspective view of the device viewed obliquely from behind.

FIG. 2 is a perspective view of the ground surface cleaning machine A as viewed obliquely from the front.

FIG. 3 is a side view of the ground surface cleaner A.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view of a ground surface cleaner A mainly showing a hammer knife rotating body H;

FIG. 6 is a sectional view of the ground surface cleaner A showing a cleaning action.

FIG. 7 is an enlarged view of a part of a hammer knife rotating body H of FIG. 6;

FIG. 8 is a view showing an operation of raising and lowering a rear wheel 5 with respect to the body 1;

FIG. 9 is an enlarged perspective view of a portion connecting the tip end of the tow rod 28 of the ground surface cleaning device A to the towing vehicle P.

FIG. 10 is a side sectional view of a blower device C.

FIG. 11 is a front view of the same.

FIG. 12 is also a schematic rear view.

FIG. 13 is an enlarged sectional view taken along line XX of FIG. 12;

FIG. 14 shows an airflow switching chamber 20 at the upper end of the main casing 14.
It is an enlarged front view of the part.

FIG. 15 is an enlarged side view of the same.

FIG. 16 is a power transmission system diagram in a front view.

FIG. 17 is a power transmission system diagram in a side view.

FIG. 18 is a schematic plan view showing a structure in which power of an engine E is branched by first and second clutches 72 and 73.

FIG. 19 is a side view showing a state where both first and second clutches 72 and 73 are “OFF”.

FIG. 20 is a side view of a state where only the first clutch 72 is “ON” and power is transmitted only to the blower device C;

FIG. 21 is a side view of a state where the first and second clutches 72 and 73 are both “ON” and power is transmitted to all of the blower device C, the rotating brush B and the hammer knife rotating body H; It is.

FIG. 22 is an overall perspective view showing a state in which the machine body 1 is stopped and dust between trees is sucked and collected by a suction hose V;

FIG. 23 is a sectional view of the cleaning device A showing a similar state.

[Explanation of symbols]

 A: Ground surface cleaner B: Rotary brush C: Blower device H: Hammer knife rotating body P: Traction vehicle S: Branches Sa: Fragments of branches T: General garbage U: Grass V: Suction hose 1: Airframe 14: Main casing 15: Blower casing 17: Hammer shaft 20: Air flow switching chamber 20a: Front opening 20b: Bottom opening 25: Blower blade 33: Dust container 35: Flexible duct 38: Rotating disk 39: Movable blade 41 : Branch input port 42: Fixed blade 43: Input hopper 45: Hose connecting pipe 46: Damper plate

Claims (3)

[Claims] 1. A rotary brush disposed in a main casing integrally mounted on a machine body with a lower surface serving as a cleaning opening, and a plurality of hammer knives mounted on a hammer shaft, and the rotating brush is provided in the main casing. A hammer knife rotating body disposed in front of the brush, and a blower device connected to and mounted on an upper portion thereof for generating suction airflow in the main casing, while being towed by a towing vehicle, The high-speed upper rotation of the hammer knife rotating body crushes the branches scattered on the ground surface, and by the same rotation of the rotary brush, scoops up garbage including crushed garbage upwards, and A ground surface cleaning machine configured to collect broken pieces of branches and garbage together by a suction force into a garbage storage box of a towing vehicle through a flexible duct. The blower device has a configuration in which a plurality of blower blades are mounted on a front surface of a rotating disk, and a movable blade is mounted on a back side of the rotating disk, and the blower device is opposed to the rotating disk in a blower casing. A branch blade insertion port is provided at a portion to be inserted, and a fixed blade paired with the movable blade is attached to the periphery of the insertion port. The movable blade and the fixed blade rotated at a high speed by a blower device through a charging hopper. A ground surface cleaning device configured to crush the branches introduced into the blower casing from the branch inlet. 2. A rotary brush disposed in a main casing integrally mounted on the machine body with a lower surface serving as a cleaning opening, and connected to an upper portion thereof for generating a suction airflow in the casing. And a high-speed upper rotation of the rotating brush to scoop up garbage upwards while being towed by the towing vehicle, and the suction force of the blower device causes the towing vehicle to move through a flexible duct. A ground surface cleaning device configured to collect in a garbage storage box, wherein an air flow switching chamber provided in a connection portion of the main casing with the blower device, and a suction hose for sucking branches and trash. One of a hose connection tube provided in the airflow switching chamber to connect the hose connection tube and a cleaning opening on the lower surface of the main casing. And a damper plate provided in the airflow switching chamber to switch the direction of the airflow. In a stopped state, the suction airflow is applied only to the suction hose side by the damper plate, A ground surface cleaning device wherein dust sucked at a tip end of a suction hose can be collected in the dust container. 3. The ground surface cleaner according to claim 2, further comprising a hammer knife rotating body disposed in front of the rotating brush in the main casing.