JP3443823B2 - Brush support device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided on a vehicle body which can be driven, and a brush grounded on a cleaning surface (road surface, floor surface, etc.) can follow irregularities on the cleaning surface during cleaning. The present invention relates to a brush support device capable of adjusting a ground load of a brush according to the amount of dust.

[0002]

2. Description of the Related Art As a brush support device, for example, a brush supported by a suspension arm (support arm) is moved up and down by a hydraulic cylinder between a grounding position and a lifting position, and a piston rod of the hydraulic cylinder is expanded and contracted. It is known to adjust the ground load of the sweeping brush. In the one disclosed in JP-A-1-315508,
A sweeping brush that sweeps up dust on the road surface is rotatably supported by the other end of a suspension arm whose one end is swingably attached to the left and right sides of the chassis. One end of a tension spring was connected to each suspension arm, and the other end of the tension spring was connected to a piston rod of a hydraulic cylinder pivotally attached to the left and right of the chassis. A pipe is connected to the pump via a solenoid valve in the hydraulic cylinder, and a pressure gauge for monitoring the pressure applied to the hydraulic cylinder is provided in the middle of the pipe.
In addition, an elevator supporting a dogleg lever is pivotally attached to the chassis so that the elevator can swing by the operation of a lift cylinder provided on the chassis, and the dogleg is attached to a suspension arm. It was designed to be engaged and disengaged to bring the suspension arm to a horizontal state (the suspended position) or a grounded state. To adjust the ground load while the brush is in contact with the ground, the driver operates the solenoid valve while monitoring the oil pressure gauge, moves the piston rod up and down to expand and contract the tension spring, and grounds according to the change in brush weight and the amount of dust. The load was set to a predetermined pressure. In addition, special table Sho 5
In the one disclosed in Japanese Patent Publication No. 9-501791, a support arm supporting a dust collecting brush (brush) is connected to a hydraulic cylinder via a spring device and a cable, a hydraulic sensor is coupled to the hydraulic cylinder, and It has a proportional control device for generating a control signal, and extends the cylinder rod or pulls it into the cylinder from the control signal and the pressure signal from the pressure sensor to bring the brush pressure with the lower surface to a selected level, and , The trash can was moved by a hydraulic cylinder between the transportation position and the cleaning position.

[0003]

SUMMARY OF THE INVENTION In the above conventional technique,
To adjust the ground load of the brush, operate the solenoid valve while checking the oil pressure gauge or use the proportional control device to move the piston rod of the hydraulic cylinder up and down to a predetermined pressure, so the structure is complicated due to the control device and piping. Also, there was the problem of becoming expensive.

In order to solve the above-mentioned problems, the present invention proposes a vehicle body
A suspension arm that can swing vertically with respect to
Support the brush on the suspension arm and swing the brush lifting rod.
Make sure that the brush is raised and lowered, and the brush lifting rod is disengaged.
By providing a locking member for the brush lifting rod,
The brush comes in contact with the road surface after being disengaged from the brush lifting rod locking member.
A brush support device adapted for grounding,
An adjusting rod is swingably attached to the arm, and the adjusting rod is used to adjust the force.
The elastic member can apply downward elastic force to the brush.
The adjustment rod in a fixed state with respect to the vehicle body.
By providing a locking member for the adjusting rod that stops
When the adjustment rod is locked, the elastic member for force adjustment is used.
The elastic force that acts on the brush does not act on the brush.
The elastic force generated by the elastic member for force adjustment is controlled by the adjusting rod.
It is provided with a ground load adjusting mechanism adapted to be applied to the sea . One end of the adjustment rod is attached to the fixed point for force adjustment.
Attach the other end of the elastic member and
It is urged to give sexual power. Swing with suspension arm
One end of the rod is swingably connected to the moving lever,
The other end is swingable on a lever that is swingably attached to the vehicle body
Connect the lever and the brush lifting rod with a link member.
Swing the brush lifting rod to raise and lower the brush.
The adjusting rod has a pressing portion capable of pressing the upper surface of the lever.
And then remove the adjustment rod from the locking member for the adjustment rod.
Note that the pressing part will move the lever with the elastic force of the elastic member for force adjustment.
The elastic force of the elastic member for force adjustment
It will be granted to Shi.

Further, the present application is to swing in the vertical direction with respect to the vehicle body.
A suspension arm is installed as much as possible, and a brush is supported on the suspension arm.
Hold it and swing the brush lifting rod to move the brush up and down.
So that the brush lifting rod engages and disengages.
By providing a member, the brush lifting rod is a locking member for the brush lifting rod.
Is removed from the brush so that it will come into contact with the road surface.
It is a brush support device and an adjustment rod is swingably mounted on the vehicle body.
A force adjustment whose one end is attached to a fixed point on the adjustment rod
Attach the other end of the elastic member for the upward direction to the brush
Of the adjustment rod to the vehicle body.
Adjusting rod locking member that locks in a fixed state by
The force adjustment is performed when the adjusting rod is locked to the locking member for adjusting.
The elastic force of the elastic member is not applied to the brush, and the brush is locked.
By removing the elastic rod for adjusting the force by the adjusting rod.
Ground load so that the elastic force by the brush is applied to the brush
It is characterized by comprising an adjusting mechanism.

The present application also swings vertically with respect to the vehicle body.
A suspension arm is installed as much as possible, and a brush is supported on the suspension arm.
Hold it and swing the brush lifting rod to move the brush up and down.
So that the brush lifting rod engages and disengages.
By providing a member, the brush lifting rod is a locking member for the brush lifting rod.
Is removed from the brush so that it will come into contact with the road surface.
It is a brush support device and an adjustment rod is swingably mounted on the vehicle body.
And its suspension rod as an elastic member for adjusting the force.
Attach one end of the il spring and connect the other end to the brush lifting rod.
Also, the adjustment rod is locked to the vehicle body in a fixed state.
Provide the adjusting rod locking member, and attach the adjusting rod to the adjusting rod locking member.
In the locked state, the elastic force generated by the coil spring for lifting
The coil spring for lifting is attached to the spring and unlocked.
Shrinks so that the elastic force is not applied to the brush
It is characterized by comprising a ground load adjusting mechanism.

In the present application, the brush is shaken vertically on the vehicle body.
It is movably supported, and the brush lifting rod raises and lowers the brush.
In the brush support device, it can act on the brush support device.
Elastic member for precise force adjustment and attachment of elastic force by the elastic member
Equipped with a ground load adjustment mechanism that includes an adjustment rod that changes the applied state
And the ground load adjusting mechanism is supported by a plurality of adjusting rods.
Attaches elastic members for adjusting force and acts on brush support device
The state of application of elastic force to operate each adjustment rod
It is preferable to configure so that it can be changed in more steps .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a brush supporting device of the present application will be described with reference to FIGS. The brush support device 1 is capable of moving the sweeping brush 2 and the left and right suspension arms 3 and 4 for supporting the sweeping brush 2 swingably in the vertical direction and the brush 2 between the lifting position A and the grounding position B in the vertical direction. And a brush for lifting and lowering the brush lifting rod 23 and the sweeping brush 2 (contact width of the brush 2 with respect to the road surface) and a clutch for operating the rotating device 6 for rotating and stopping the sweeping brush 2. It is composed of a wire 41 operation part. Figure 2
Bearings 8, 8 are fixed to the left and right of the vehicle body 7 of the cleaning vehicle as shown in FIG.
One ends of the left and right suspension arms 3 and 4 are attached to both ends of the suspension arms 3 and 4, and the suspension arms 3 and 4 and the arm attachment shaft 9 can swing integrally. Bearings 10 and 11 are fixed to the other ends of the left and right suspension arms 3 and 4, respectively.
The rotating shaft 12 of the sweeping brush 2 is supported by the shaft 2, so that the sweeping brush 2 can rotate. Further, the sweeping brush 2 is moved to the lifting position A shown by the solid line in FIG. 1 by the swinging of the suspension arms 3 and 4.
And a ground contact position B indicated by a two-dot chain line are vertically movable.

In FIG. 2, a swing lever 1 having one end welded to an arm mounting shaft 9 inside one end of a suspension arm 3 on the left side.
3 is integrally attached. One end of a rod 14 is swingably connected to the other end of the swing lever 13.
Further, a bracket 15 is erected on the vehicle body 7, one end of a lever 17 is swingably attached to a pin 16 fixed at a substantially intermediate position of the bracket 15, and the other end of the lever 17 is provided with a rod 14. The other end is swingably connected.
A spring retaining bolt 18 is screwed to a portion of the lever 17 on the front side of the pin 16 (left side portion in FIG. 1), and an upper end of the spring retaining bolt 18 is fixed to a bolt (fixed point) 19 screwed to the vehicle body 7. The lower end of the suspended brush lifting spring 20 is hooked. The brush lifting spring 20 is a tension coil spring, and applies an elastic force (lifting force) in the lifting direction to the sweeping brush 2 via the lever 17, the rod 14, the swing lever 13, and the suspension arms 3 and 4. The sweep brush 2 is grounded to the road surface 21 with a ground load lighter than its own weight during normal cleaning. Further, the lever 17 is connected to the link member 22 through a long hole provided at one end thereof, and the link member 2
The other end of 2 is connected to a brush elevating lever (brush elevating rod) 23 swingably provided on the bracket 15.
The brush lifting lever 23 is provided at a position where it can be operated in the driver's seat D (FIGS. 1 and 12), and when the sweeping brush 2 is in the lifting position A as shown by the solid line in FIG. It is locked at the position A1 shown by the solid line by the stop member 24.

Next, the ground load adjusting mechanism 5 will be described. The ground load adjusting mechanism 5 is a load switching lever (adjustment rod).
25, a pressing spring 26 shown as an elastic member for adjusting the force, the lever 17, the rod 14, the swing lever 13, and the suspension arms 3 and 4. Load switching lever 2
Like the brush elevating lever 23, 5 is swingably provided on the pin 16 at a position where it can be operated by the driver's seat D, and the other end of the lever 17 is provided on the front side of the pin 16 of the load switching lever 25. A pressing portion 27 that protrudes to the left side of the vehicle body (perpendicular to the paper surface of FIG. 1) capable of pressing the upper surface is formed. Further, a spring retaining bolt 28 is screwed to a portion of the load switching lever 25 rearward of the pin 16 and an upper end of the spring retaining bolt 28 is fixed to a bolt (fixed point) 29 screwed to the vehicle body 7. The lower end of the pressure spring 26, which is an elastic member for force adjustment that is locked, is locked. The pressurizing spring 26 is a tension coil spring, has a larger elastic force than the elastic force of the brush lifting spring 20, and is always in the load switching lever 25.
The pressing portion 27 side is urged downward to increase the ground load of the sweeping brush 2 during heavy cleaning (when there is a large amount of dust on the road surface or when the road surface has large irregularities). During normal cleaning (when the amount of dust on the road surface is small or when the unevenness of the road surface is small), a diagram showing a state fixed to the vehicle body 7 so that the elastic force of the pressing spring 26 does not act on the sweeping brush 2. The vehicle body 7 is provided with a load switching lever locking member 30 that positions the load switching lever 25 at the position P1 indicated by the solid line 1. The pressing spring 26 and the brush lifting spring 20 have a slight variation in spring length compared to when the sweeping brush 2 is new, as in the case where the sweeping brush 2 is worn due to cleaning and has a small diameter. Even if there is, the spring constant is set so small that the elastic force (pressing force, lifting force) acting on the sweeping brush 2 is kept substantially constant.

Next, the rotating device 6 will be described. Car body 7
As shown in FIGS. 2 to 4, the spring retaining bracket 32 is
Is erected upward, and one end of a pulley urging spring 33 is hooked on the spring hooking bracket 32.
In addition, the L-shaped bracket 34,
35 is erected. A swing shaft 36 is rotatably installed between the brackets 34 and 35. A dogleg shaped member 37 is integrally welded to one end side (the left end in FIG. 2) of the swing shaft 36, and the other end of the pulley biasing spring 33 is hooked to one end of the dogleg shaped member 37. Pulley bias spring retaining bolt 3
8 is screwed, and a lever 39 is attached to the other end of the V-shaped member 37.
Has one end swingably connected. One end of a swing member 40 is swingably connected to the other end of the lever 39, and the other end of the swing member 40 is swingably supported by a bracket 34 by a shaft 40a. The other end 41b of the clutch wire 41, whose one end 41a is connected to the brush elevating lever 23, is connected to 40. On the other end side (the right end in FIG. 2) of the swing shaft 36, a pulley support member 43 having a tension pulley 42 axially supported is welded. Further, the pulley 4 to which the driving force from a driving source (not shown) is transmitted to the vehicle body 7.
4 is rotatably provided, and the pulley 44 is integrally provided with a pulley 45. At the right end of the arm mounting shaft 9, pulleys 46 and 47 integrally formed are provided on the shaft 9 via a bearing (not shown) so as to be rotatable relative to each other. A pulley 48 is key-connected to the right end of the brush rotary shaft 12. Pulleys 45 and 46 and tension pulley 42
A belt 49 is wound around the pulleys 47, 48.
The belt 50 is wound around and the driving force from the driving source is transmitted to the sweeping brush 2. Reference numerals 51, 52 and 53 are flaps for receiving dust blown by the brush.

Next, the operation will be described. When there is little dust on the road surface 21 or when the road surface is substantially flat, the driver's seat D
Then, the operator removes the brush elevating lever 23 from the locking member 24 and pushes it down to the position B2 shown by the double-dot chain line in FIG. The pushing operation of the brush lift lever 23 is transmitted to the suspension arms 3 and 4 via the lever 17 and the like, and the sweeping brush 2 moves from the suspension position A shown by the solid line in FIG. 1 to the grounding position B shown by the chain double-dashed line. Then, the sweeping brush 2 is grounded to the road surface 21 by the brush lifting spring 20 with a grounding load smaller than the substantially constant brush weight. The load switching lever 25 is held at the position P1 shown by the solid line in FIG. 1 by the locking member 30, and the elastic force of the pressing spring 26 does not act on the brush 2. In addition, when the brush lifting lever 23 is pushed down, the clutch wire 41
Becomes loose, and the tension pulley 4 is
2 is urged to tension the belt 49, as shown in FIG.
The tension pulley 42 moves to a position B2 indicated by a chain double-dashed line, tension is applied to the belt 49, the driving force from the driving source is transmitted to the pulley 46 via the pulleys 44 and 45, and further from the pulley 47 to the pulley 48. Is transmitted to the vehicle body 7 by following the unevenness of the road surface 21 due to the ground load, the sweeping brush 2 rotates with the ground load that reduces the lifting force of the lifting spring 20 against the brush's own weight, and the dust on the road surface 21 reaches the vehicle body 7. It is thrown in and collected in an accommodating portion (not shown) such as a hopper provided.

Next, when there is a lot of dust on the road surface 21 or when the road surface 21 is highly uneven, an operator in the driver's seat with the brush lifting lever 23 pushed down moves the load switching lever 25 from the locking member 30. remove. Load switching lever 25
When is released from the locking member 30, the pressing portion 27 biased by the pressing spring 26 presses the upper surface of the lever 17, and the elastic force of the pressing spring 26 is applied to the sweeping brush 2 via the lever 17 or the like. Even if the cleaning surface 21 has a large amount of dust or unevenness, the brush 2 is further applied as compared with the case of the normal cleaning.
Is strongly pressed against the road surface 21 and there is no unswept residue.

When the cleaning operation is completed, if the load switching lever 25 is removed from the locking member 30, the load switching lever 25 is locked to the locking member 30 and the brush lifting lever 23 is locked. 24, and the sweeping brush 2 is lifted to the lifting position A. Brush lift lever 2
3 is pulled up, the clutch wire 41 is pulled and the tension pulley 4 is urged by the pulley urging spring 33.
2 moves to the position A2 shown by the solid line in FIG. 4, the tension of the belt 49 disappears, the transmission of the driving force stops, and the rotation of the sweeping brush 2 stops.

Next, second to seventh embodiments will be described. The same components in the second to seventh embodiments are designated by the same reference numerals. 5 to 11 show the brush supporting device 1 provided with the ground load adjusting mechanism of the second to seventh embodiments, respectively, in which the brush lifting rod 60 is removed from the locking member 61 and the sweeping brush 62 is shown. Shows the state of being grounded on the road surface 21. In the second to fifth embodiments, suspension arms 65, 65 are connected to the left and right sides of a vehicle body 64 via a swingable rod 63 to the brush lifting rod 60. One end of each of the suspension arms 65, 65 is swingably connected to the vehicle body 64, and the other end thereof rotatably supports the sweeping brush 62, and the sweeping brush 6 is operated by operating the brush lifting rod 60.
2 is moved to the grounding position B and the lifting position A.

In the second embodiment, as shown in FIG. 5, one end of a swingable adjusting rod 69 provided on the vehicle body 64 is connected to the vehicle body 64 and elastic force can be applied to the brush 62 in the upward direction. The other end of the lifting coil spring (elastic member for force adjustment) 66 is connected, one end of which is connected to the brush lifting rod 60 and the vehicle body 64, and the other end of the pressing coil spring 67 which applies downward elastic force to the brush 62. Are connected to form a ground load adjusting mechanism. The adjustment rod 69 engages the locking member 7 except during heavy cleaning.
0, the pressing portion 71 of the adjusting rod 69 presses the brush elevating rod 60, and the sweeping brush 62 is pressed by the coil spring 67 for pressing.
The lifting elastic force of the lifting coil spring 66 is applied against the pressurizing elastic force, and the sweeping brush 62 is grounded with a substantially constant small ground load. Further, during heavy cleaning, the adjusting rod 69 is locked by the locking member 70 and is held in a fixed state with respect to the vehicle body 64, so that the pressing portion 71 is separated from the brush lifting rod 60, and only the elastic force of the coil spring 67 for pressure application. Thus, the sweeping brush 62 is grounded with a substantially constant large grounding load.

In the third embodiment, as shown in FIG. 6, one end of a coil spring for suspension (elastic member for force adjustment) 66 for applying upward elastic force to the sweeping brush 62 is applied to the adjusting rod 69. It is connected to the brush lifting rod 60 and the coil spring 66 for lifting.
Of the brush lifting rod 60 is connected to the other end of the brush lifting rod 60, and one end of the brush lifting rod 60 is connected to the vehicle body 64 on the side opposite to the position where the lifting coil spring 66 is connected. The other end of the pressurizing coil spring 67 that gives an elastic force is connected to form a ground load adjusting mechanism. During normal cleaning, the adjusting rod 69 is attached to the locking member 70 of the vehicle body 64.
, And the sweeping brush 62 has a substantially constant ground load to which the elastic force of the pressing coil spring 67 and the elastic force of the lifting coil spring 66 are applied. Further, during heavy cleaning, the adjusting rod 69 is removed from the locking member 70, the lifting coil spring 66 contracts, the elastic force of the lifting coil spring 66 applied to the sweeping brush 62 disappears, and the elasticity of the pressurizing coil spring 67 is lost. The force exerts a large force, resulting in a substantially constant ground load that is larger than the ground load during normal cleaning.

In the fourth embodiment, as shown in FIG. 7, one end of the adjusting rod 69 is swingably connected to the vehicle body 64 and a gas for force adjustment is applied to the sweeping brush 62 so as to give an upward elastic force. The other end of the spring 72 is connected to form a ground load adjusting mechanism. The adjustment rod 69 is disengaged from the locking member 70 and the pressing portion 71 pushes the brush lifting rod 60 upward except when performing heavy cleaning.
Due to the upward elastic force of 2, a substantially constant ground load, which is lighter than its own weight, is obtained. Further, during heavy cleaning, the adjusting rod 69 is locked by the locking member 70, and the sweeping brush 62 is grounded to the road surface 21 only by its own weight.

In the fifth embodiment, as shown in FIG. 8, the brush lifting rod 60 of the third embodiment has no pressing coil spring, and the adjusting rod 69 is locked during normal cleaning. The hoisting brush 62 is locked by the member 70, the elastic force of the hoisting coil spring 66 is applied to the hoisting brush 62 to reduce the ground load, and the adjustment rod 69 is disengaged from the hoisting coil 70 at the time of heavy cleaning. Contracts and the elastic force disappears, increasing the ground load and grounding at a substantially constant ground load.

A sixth embodiment will be described. Figure 9
As shown in FIG. 6, the sweeping brush 62 integrated with the brush lifting rod 60
A suspension arm 65 for rotatably supporting the vehicle is swingably provided on the vehicle body 64, and an outer surface and an inner surface are baked and interposed between the suspension arm 65 and the vehicle body 64.
A rubber type tensioner (torsion rod member having elasticity) 73 twisted so as to apply an upward elastic force to the sweeping brush 62 sets the ground load smaller than its own weight.
Between the vehicle body 64 and the adjusting rod mounting member 77, the outer surface and the inner surface of the rubber tensioner 74 are baked and integrally fixed, respectively, as shown in FIG.
Reference numeral 4 denotes a state in which a predetermined amount is twisted between the vehicle body 7 and the adjustment rod attachment member 77, and the predetermined amount of twist of the rubber tensioner 74 is integrally fixed to the end portion of the adjustment rod attachment member 77. The ground load adjusting mechanism is configured so as to apply a downward elastic force to the sweeping brush 62 via the. During normal cleaning, the adjusting rod 69 is positioned by the locking member 70 so that the pressing portion 71 does not come into contact with the suspension arm 65, and the elastic force of the tensioner 73 is subtracted from the weight of the sweeping brush 62 to maintain a substantially constant ground. During heavy cleaning, the adjusting rod 69 is removed from the locking member 70, and the pressing portion 71 presses the suspension arm 65 by the twisting force of the tensioner 74 to provide a substantially constant ground load increased from that during normal cleaning. In this way, the rubber tensioners 73 and 74 are attached to the arm 6
5. If it is used in the swing fulcrum portion of the adjusting rod 69, the space for disposing the spring can be saved and the brush supporting device can be made compact.

In the seventh embodiment, as shown in FIG. 11, a suspension arm 65 rotatably supporting a sweeping brush 62 and swingably supported by a vehicle body 64 integral with the brush lifting rod 60.
Adjustment rod 69 having a pressing spring 75a and a lifting spring 75b capable of adjusting the ground load of the sweeping brush 62 by pressing.
A ground load adjusting mechanism is configured by swingably providing a and 69b. By pressing the adjusting rods 69a, 69b from the locking members 70a, 70b, respectively, the pressing portions 71a,
71b presses or separates the suspension arms 65, respectively, and the ground load is substantially constant, only the self-weight of the sweeping brush 62, the spring 7
The elastic force of 5a is applied and increased, the elastic force of the spring 75b is applied and decreased, and the elastic force of the springs 75a and 75b is applied in multiple stages.

In the present invention, the elastic member is, for example, a coil spring, a torsion bar material having elasticity, a gas spring, or the like, and any elastic member having a small spring constant to the extent that the consumption of the sweeping brush does not affect it. It is also possible to use a member, and it is also possible to use a structure in which a constant pressure is applied to the cylinder and the fluid is released by a relief valve, especially if a torsion bar is applied to the swing fulcrum of the adjusting rod. It is compact and preferable. Further, the combination of the elastic member for force adjustment and another elastic member in which the elastic force acts on the sweeping brush in a different direction from the above is not limited to the above-mentioned embodiment, and one is a coil spring and the other is Any combination of gas springs may be used. In addition, instead of the sweeping brush, a support that supports a gutta room (side brush) 76 that sweeps dust on the road surface 21 shown in FIG. 12 toward the passage position of the sweeping brush 2 so as to be vertically movable with respect to the vehicle body 7. It may be applied to the device. Also, as a means for stopping the rotation of the brush in conjunction with the lifting and lowering of the brush, the vertical movement of the lifting rod is detected by a limit switch, or the swing of the suspension arm is detected by the limit switch, and the brush provided on the suspension arm is detected. Turning the rotation of the brush ON and OF by stopping the rotation of the hydraulic motor or electric motor for rotation
It may be F.

[0023]

As described above, according to the brush supporting apparatus of the present invention, the ground load including the elastic member for adjusting the ground load of the brush and the adjusting rod for changing the applied state of the elastic force by the elastic member. The adjustment mechanism provides a substantially constant ground load in two or multiple stages, so there is no need for a pressure gauge, control device, etc., as compared to the conventional one that controls the cylinder and adjusts the ground load to a predetermined value depending on the cleaning state. And the structure is simple. This makes it cheap .

[Brief description of drawings]

FIG. 1 is a side view of a brush supporting device.

FIG. 2 is a II view of FIG.

FIG. 3 is a partially enlarged view of a rotating device.

4 is an IV view of FIG. 2. FIG.

FIG. 5 is a conceptual diagram showing a second embodiment.

FIG. 6 is a conceptual diagram showing a third embodiment.

FIG. 7 is a conceptual diagram showing a fourth embodiment.

FIG. 8 is a conceptual diagram showing a fifth embodiment.

FIG. 9 is a conceptual diagram showing a sixth embodiment.

10 is a sectional view taken along line XX of FIG.

FIG. 11 is a conceptual diagram showing a seventh embodiment.

FIG. 12 is a side view of the cleaning vehicle.

[Explanation of symbols]

1 Brush support device 2,62 sweeping brush 3,4 suspension arm 5 Ground load adjustment mechanism 6 brush rotation device 19,29 bolts (fixed point) 20, 26, 66, 67 Coil spring 23,60 Brush lifting rod 24,61 Locking member for brush lifting rod 25,69 Adjustment rod 30, 70 Locking member for adjusting rod 72 gas spring 73,74 torsion bar

Claims (6)

(57) [Claims] 1. A suspension which is vertically swingable with respect to a vehicle body.
An arm is provided, the brush is supported on the suspension arm, and the
Swing the lifting rod to raise and lower the brush,
Provided with a locking member for the brush lifting rod that engages and disengages the brush lifting rod.
The brush lifting rod is disengaged from the brush lifting rod locking member.
Brush support so that the brush contacts the road surface
It is a device, and an adjustment rod is provided on the car body so that it can swing freely.
Use the elastic member for adjusting the force of
The elastic force is applied to the body and the adjustment rod is attached to the vehicle body.
On the other hand, by providing a locking member for the adjusting rod that locks in a fixed state,
When the adjustment rod is locked to the adjustment rod locking member,
The elastic force of the adjusting elastic member does not act on the brush and locks
By removing the elastic rod for adjusting the force by the adjusting rod.
A brush supporting device comprising a ground load adjusting mechanism adapted to apply elastic force to the brush . 2. One end of the adjusting rod is attached to a fixed point.
Attach the other end of the elastic member for force adjustment to the brush
The brush supporting device according to claim 1, wherein a downward elastic force is applied so that the elastic force can be applied . 3. A swing lever integrated with a suspension arm and a rod.
One end of the rod is swingably connected, and the other end of the rod swings to the vehicle body.
It is connected to a freely attached lever so that it can swing
Connect the brush lifting rod with a link member to
Swing to raise and lower the brush, and the adjustment rod
An adjusting rod is formed by forming a pressing portion capable of pressing the upper surface of the lever.
Force is adjusted by removing the adjustment rod from the locking member for
The elastic force of the elastic member pushes the lever downward
The elastic force of the elastic member for adjustment is applied to the brush.
The brush supporting device according to claim 2, wherein the brush supporting device is provided. 4. Suspending vertically with respect to the vehicle body
An arm is provided, the brush is supported on the suspension arm, and the
Swing the lifting rod to raise and lower the brush,
Provided with a locking member for the brush lifting rod that engages and disengages the brush lifting rod.
The brush lifting rod is disengaged from the brush lifting rod locking member.
Brush support so that the brush contacts the road surface
It is a device, and an adjustment rod is provided on the car body so that it can swing freely.
One end of the rectifying rod is fixed at a fixed point and is an elastic part for force adjustment.
Elastic force upward against the brush mounting the other end of the timber is
The adjustment rod is fixed to the vehicle body so that it can be applied.
Locking member for adjusting rod is provided by locking member for adjusting rod
When the adjusting rod is locked to the member, the elastic portion for adjusting the force
The elastic force of the material is not applied to the brush and the lock can be released.
With the adjusting rod, elasticity by the elastic member for adjusting the force
A ground load adjustment mechanism that applies force to the brush
A brush supporting device comprising: 5. Suspending vertically with respect to the vehicle body
An arm is provided, the brush is supported on the suspension arm, and the
Swing the lifting rod to raise and lower the brush,
Provided with a locking member for the brush lifting rod that engages and disengages the brush lifting rod.
The brush lifting rod is disengaged from the brush lifting rod locking member.
Brush support so that the brush contacts the road surface
It is a device, and an adjustment rod is provided on the car body so that it can swing freely.
The coil spring for lifting is used as an elastic member for adjusting the force on the rod.
Attach one end, connect the other end to the brush lifting rod,
Lock for the adjustment rod that locks the adjustment rod to the vehicle body in a fixed state
A member is provided and the adjustment rod is locked to the locking member for the adjustment rod.
In the state, elastic force is applied to the brush by the coil spring for lifting.
Then, the coil spring for lifting is contracted by releasing the lock.
Adjustment of the ground load to prevent the elastic force of the brush from being applied to the brush.
A brush supporting device comprising an adjusting mechanism . 6. A brush supporting device for supporting a brush swingably in a vertical direction on a vehicle body and for raising and lowering the brush by a brush elevating rod, comprising an elastic member for adjusting force operable on the brush supporting device and the elastic member. It comprises a ground load adjusting mechanism including an adjusting rod for changing the applied state of the elastic force ,
The ground load adjusting mechanism is for adjusting the force on each of the adjusting rods.
The elastic force acting on the brush support device by attaching the elastic member of
The state of application of various levels can be adjusted by operating each adjusting rod.
A brush support device characterized by being configured so that it can be changed .