JP2002227154A - Metal piece recovering device for road sweeper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal piece recovering device preventing the front and rear wheels of a road sweeper from treading on metal pieces, capable of simply riding over an obstacle on a travel surface, and easily mountable on the road sweeper. SOLUTION: Since the front and rear wheels move on the travel surface R after the metal pieces such as nails on the travel surface R are attracted by a magnet device 15, the front and rear wheels are prevented from being broken by the nails or the like. When the obstacle exists on the travel surface, a guide member 19 rides over it, and cord members 25LF, 25LB, 25RF, 25RB, 26a, 26b are bent upward to escape above the obstacle. The cord members 25LF, 25LB, 25RF, 25RB, 26a, 26b are crisscrossed in the longitudinal direction and the width direction of the magnet device 15, therefore the magnet device 15 can be suppressed from rocking in the longitudinal direction and the vehicle width direction in spite of a simple suspension shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road cleaning vehicle for collecting dust on a running surface such as a road surface or a floor surface with a brush or vacuum suction means, and effectively removes metal pieces such as nails on the running surface. The present invention relates to an apparatus for collecting metal pieces.

[0002]

2. Description of the Related Art As such a metal piece collecting device, a magnet device is disposed immediately in front of a rear wheel of a road cleaning vehicle, and a nail stands with a cleaning brush disposed in front of a front wheel or a rear wheel of the vehicle. Even in this case, the nail is collected from the running surface by a magnetic force by a magnet device to prevent the nail from rupturing the rear wheel (Japanese Patent Laid-Open No. 11-117248), or the running surface is provided at the front of the body of the scrubber. There is known a case in which a case provided with casters running on the upper side is arranged and a magnet device is attached to the case (Japanese Utility Model Application Laid-Open No. 61-135555).

[0003]

In the former of the prior art, since the magnet device is arranged behind the front wheel and immediately before the rear wheel, a nail or the like is stuck in the rear wheel to cause a puncture. Although the situation can be avoided, damage caused by a sharp metal piece such as a nail being stuck in the front wheel cannot be avoided. Further, it is described that the magnet device is mounted on the vehicle body by using a bracket while being separated from a road surface, but how to mount the magnet device is not described. On the other hand, in the latter case, the metal pieces are collected in front of the front wheels, so that the front and rear wheels can be prevented from causing the puncture of the wheels with respect to the front and rear wheels. Since the case itself is pushed by the vehicle and the caster moves on the running surface, if the running surface is uneven, the caster needs a large power to get over it, and the casing etc. that holds the magnet device However, it is not a preferable configuration because it is complicated, the number of assembling steps is large, and it cannot be manufactured at low cost. An object of the present invention is to mount a magnet device on a road cleaning vehicle with a simple configuration to prevent a front wheel and a rear wheel from stepping on a metal piece in front of the road cleaning vehicle and easily overcome obstacles on a running surface. It is an object of the present invention to provide a metal piece collecting device capable of performing the above.

[0004]

[MEANS FOR SOLVING THE PROBLEMS]
In the present application, a magnet device for suction is attached to a vehicle body of a road cleaning vehicle that collects dust on a traveling surface so as to be separated from the traveling surface, and a metal piece on the traveling surface is attracted by a magnetic attraction action of the magnet device. In the metal scrap collection device of the road cleaning vehicle, a magnet device acting on a running surface in front of a running locus on which the front and rear wheels run is arranged in front of a front wheel of the road cleaning vehicle, and the magnet device is It is characterized by being suspended by a rope member such as a wire between the suspension portion provided on the vehicle body. Since the magnet device is suspended from the vehicle body by its own weight by the rope member, the magnet device can be attached with an extremely simple and inexpensive configuration, and the metal pieces are picked up at the front side of the front wheel, so the front and rear wheels step on the metal pieces. Is avoided. Moreover, even if there is an obstacle on the running surface, the rope member is slackened upward and can be easily overcome. As a preferred suspension structure by a rope member, on both sides in the vehicle width direction of the magnet device, a connecting portion is provided before and after each in the vehicle traveling direction, and above the connecting portions, corresponding to each connecting portion. Hanging portions are provided before and after in the vehicle traveling direction, and on each side in the vehicle width direction, the front and rear hanging portions and the front and rear connecting portions are connected so that the cable members cross each other, and the width on either one of the front and rear sides is provided. The hanging portions on both sides in the direction and the connecting portions on both sides in the width direction corresponding to the hanging portions are connected by a cable member so that the cable members cross each other. According to this, since the rope members are crossed in the vehicle traveling direction (the front-rear direction) and the vehicle width direction, even in the case of a simple suspension structure using the rope members, the magnets are provided in the front-rear direction and the width direction. The configuration is such that the device hardly shakes. It is preferable that guide members are provided before and after the magnet device in the forward and backward directions, respectively, toward the upper front and the lower rear from the magnet device. Thus, when the vehicle collides with an obstacle while traveling, the vehicle can smoothly get over the obstacle.

[0005]

FIG. 1 is a plan view of a road cleaning truck 1 provided with the present invention. The road cleaning truck 1 has a conventionally well-known configuration and includes a side brush 4 between the front and rear wheels 2 and 3 and an air circulation type or a rotating main brush type between the side brush 4 and the rear wheel 3. A dust collection device 5 is provided. After the dust on the side of the running surface R is swept by the side brush 4 toward the inside of the vehicle body, the dust is collected by the dust collection device 5 and collected by the hopper 6 on the vehicle body.

At the front of the vehicle, frames 11 are fixed to the both sides in the width direction of the vehicle obliquely forward and obliquely from the lower end of a mounting plate 11A fixed to left and right chassis portions (vehicle body) 10 of the vehicle. . The frames 11 are connected by a connection plate 11a. In the left and right frames 11,
A pair of shaft members (pins) 12aL, 12bL, 12aR, 1
2bR protrudes and is fixed laterally. The shaft member 12aL,
On the outer side in the axial direction of each of 12bL, 12aR, and 12bR,
A flange member 12c is integrally attached, and is prevented from coming off the axis line when a rope member described later is hung.

Below the frame 11, a magnet device 1 is provided.
5 are arranged. In the magnet device 15, the holding frame 16 having a U-shaped cross section has a length substantially equal to the width of the vehicle,
A cylindrical magnet insertion case 17 is provided on the lower surface on both sides in the longitudinal direction.
a is attached via each pair of U bolts 18. A rod-shaped permanent magnet 17 is inserted into the magnet insertion case 17a so as to be freely inserted and removed from the longitudinal direction. The length of the permanent magnet 17 is slightly larger than the width of each of the two rear wheels on the left and right in the direction of the vehicle. A side plate 17b is integrally attached to the longitudinal outer end of the permanent magnet 17, and a handle 17c used when pulling out the magnet from the case 17a is attached. The U bolt 18 connects the vicinity of each end to the holding frame 16 with respect to the left and right cases 17a. A guide member 19 is attached to each pair of U-bolts 18 so as to face obliquely upward in the front-rear direction of the vehicle. In this guide member 19, the guide member 19, particularly on the front side in the vehicle traveling direction, rides on an obstacle on the running surface R, and
It serves to push 5 upward.

The frame 16 has a pair of connecting portions 20aL, 20bL, 20aR, 20bR in the front-rear direction at positions inside the longitudinal direction of the left and right permanent magnets 17, respectively.
Is provided. Connecting parts 20aL, 20bL, 20aR,
20bR has a connection hole 21 formed therein.
The shaft members 12aL, 12bL, 12aR, and 12bR are provided with the same pitch in the vehicle width direction with respect to L, 20bL, 20aR, and 20bR.

The front and rear shaft members 12aR, 12bR (12aL, 12b
L) includes cable members 25RF and 25RB such as wires, respectively.
(25LF, 25LB) is hooked on one end as a ring. 2 and 3, the right side is shown from the front, and the left side is denoted by parentheses. The other end of the wire 25RF (25LF) hooked on the front shaft member 12aR (12aL) is a corresponding side in the width direction, and is a connecting portion 20bR on the rear side of the frame 16.
(20bL), the other end of the wire 25RB (25LB) hung on the rear shaft member 12bR (12bL) is connected to a ring after passing through the connection hole 21 of the (20bL). The connecting portion 20 on the front side of the frame 16
linked to aR (20aL). Thus, the magnet device 15
Are front and rear suspension portions (shaft members) 12aR, 12bR (12aL, 12b) on both sides in the vehicle width direction.
L) and connecting portions 20aR, 20bR (20aL, 20b)
L) is a cable member 25R such as a wire connecting them.
F, 25RB (25LF, 25LB) are crossed and suspended so as to cross each other. Also, the shaft members 12aR, 12aL on both sides in the width direction located on the front side and the connecting portions 20aR, 20aL on both sides in the width direction on the front side are also connected by cable members 26a, 26b such as wires so as to cross each other when viewed from the front of the vehicle. (FIG. 4). Cable member 2
5LF, 25LB, 25RF, 25RB, 26a, 26
The length of b is set so that the magnet device 15 is at a suitable distance for magnetically attracting the metal pieces on the running surface R. The hanging position of the permanent magnets 17 on the left and right in the width direction is determined based on the straight road surface. In front of the cleaning car 1, the rear wheels 2 and 3 face a traveling surface in front of a traveling locus S.

The side brush 4 is provided by such a road cleaning truck 1.
When cleaning the traveling surface R with the dust collection device 5 and the cleaning vehicle 1 is traveling straight on the traveling surface R, the magnet device 15 is disposed in front of the front wheel 2 in the traveling direction. A metal piece such as a nail on the running surface R is attracted by the magnet device 15 at the front side of the vehicle, and the traveling surface R after the suction is moved to the front and rear wheels 2 and 3.
, The front and rear wheels 2 and 3 are prevented from being damaged by nails or the like. If there is an obstacle on the running surface, the guide member 19 rides on the obstacle, and the rope member 25
LF, 25LB, 25RF, 25RB, 26a, 26b
Deflects upward and escapes over obstacles, so that the magnet device 15
Is not damaged by obstacles. In addition, the magnet device 15 includes the cord members 25LF, 25LB, 25RF, 25R.
B, 26a, 26b, but in the front-back and left-right (width) directions,
5LF, 25LB, 25RF, 25RB, 26a, 26
When the magnet device 15 tries to swing back and forth and in the width direction due to the running of the vehicle, one of the rope members in the crossed relationship is pulled in the swinging direction. Therefore, the swing in that direction can be suppressed, and the magnet device 15 can be prevented from swinging back and forth and in the vehicle width direction in spite of the extremely simple suspension form, and the running surface R and the magnet device Distance is constantly kept constant.

[0011]

As described above, according to the present invention, the magnet device can be mounted with an extremely simple and inexpensive configuration, and the metal pieces are picked up at the front side of the front wheels, so that the front and rear wheels can avoid stepping on the metal pieces. No puncture accidents. Moreover, even if there is an obstacle on the running surface, the rope member is slackened upward and can be easily overcome. In addition, since the magnet device is suspended by crossing the rope member in the front-rear direction and the width direction of the vehicle, even in a simple suspension structure using the rope member, the magnet device is mostly There is no shaking, there is little variation in the distance from the running surface R, and the metal pieces can be reliably collected.

[Brief description of the drawings]

FIG. 1 is a plan view of a road cleaning truck.

FIG. 2 is an enlarged view as viewed from II in FIG. 1;

FIG. 3 is an enlarged sectional view of a main part of FIG. 2;

FIG. 4 is a front view of the metal piece collecting device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Road surface cleaning car 2 Front wheel 3 Rear wheel 10 Chassis part (body) 12aL, 12bL, 12aR, 12bR Shaft member (hanging part) 15 Magnet device 19 Guide member 20aL, 20bL, 20aR, 20bR Connecting part 25LF, 25LB, 25RF, 25RB, 26a, 2
6b rope member S running locus R running surface

Claims (3)

[Claims] An attraction magnet device is attached to a vehicle body of a road cleaning vehicle for collecting dust on a traveling surface so as to be separated from the traveling surface, and a metal piece on the traveling surface is attracted by a magnetic attraction action of the magnet device. In a metal piece collecting device for a road cleaning vehicle, a magnet device that acts on a running surface in front of a traveling locus on which the front and rear wheels travel is disposed in front of a front wheel of the road cleaning vehicle, and the magnet device is provided. A metal piece collection device for a road cleaning vehicle, wherein the device is suspended by a rope member such as a wire between a suspension portion provided on a vehicle body. 2. A connecting portion is provided on each side of the magnet device in the vehicle width direction before and after in the vehicle traveling direction.
Above these connecting portions, hanging portions are provided in front and rear of the vehicle traveling direction corresponding to each connecting portion, and on each side in the vehicle width direction, the front and rear hanging portions and the front and rear connecting portions are respectively rope members. Are connected so as to intersect, and the hanging parts on either side in the width direction on either one of the front and rear sides, and the connecting parts on both sides in the width direction corresponding to those hanging parts are connected by a rope member so that the rope members intersect. 2. The metal piece collecting device for a road cleaning truck according to claim 1, wherein the metal piece collecting device is connected. 3. A metal piece for a road cleaning vehicle according to claim 1, wherein guide members are provided before and after the magnet device in the forward and backward directions of the magnet device, respectively. Collection device.