JPH10195836A - Brush support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brush support device which is simple in structure and low-priced. SOLUTION: A sweeping brush 2 is supported on a car body 7 in such a manner as to oscillate up and down by a suspending arm 3. One end of a lever 17 to which a brush suspending spring 20 is connected is provided in such a manner as to oscillate on the car body 7, a brush elevating lever 23 capable of a rotating device is connected to the other end, and the lever 17 is connected to the suspending arm 3. The car body 7 is provided with a load switching lever 23 to which a pressurizing spring 26 is connected. At the time of cleaning, the sweeping brush 2 is gounded on the road surface 21 by the brush elevating lever 23, and rotated by the rotating device, and according to the projecting and recessed parts of the road surface and the amount of dust, the load switching lever 25 is engaged and disengaged with and from the load switching lever 25 to change the grounding load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As the brush support device, for example, a brush supported by a suspension arm (support arm) is moved up and down between a ground position and a suspension position by a hydraulic cylinder, and by extension and contraction of a piston rod of the hydraulic cylinder. There is known a sweeping brush that adjusts a ground load. In the one disclosed in Japanese Patent Application Laid-Open No. 1-315508,
A sweeping brush for sweeping dust on a road surface is rotatably supported by the other end of a suspension arm having one end swingably attached to the left and right sides of the chassis. One end of a tension spring was connected to each of the suspension arms, 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 sides of the chassis. The hydraulic cylinder was connected to a pump via a solenoid valve via a solenoid valve, and a pressure gauge for monitoring the pressure applied to the hydraulic cylinder was interposed in the middle of the pipe.
The elevator supporting the L-shaped lever is pivotally attached to the chassis so that it can swing freely, and the elevator swings by the operation of the lift cylinder provided on the chassis, and the L-shaped lever is attached to the suspension arm. The suspension arm was disengaged and brought into a horizontal state (lifting position) or a ground contact state. The driver controls the solenoid valve while monitoring the oil pressure gauge, adjusts the piston rod up and down to expand and contract the tension spring, and adjusts the grounding load according to the weight change of the brush and the amount of dust while the brush is in contact with the ground. The load was set to a predetermined pressure. Also, Table 5
In the device disclosed in Japanese Patent Application Laid-Open No. 9-501791, a hydraulic cylinder is connected with a support arm for supporting a dust collection (brush) via a spring device and a cable, a hydraulic sensor is connected to the hydraulic cylinder, Having a proportional control device for generating a control signal, extending or retracting the cylinder rod 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 garbage was moved between the transport position and the cleaning position by a hydraulic cylinder.

[0003]

In the above prior art,
The adjustment of the ground contact load of the brush is performed by operating the solenoid valve while checking the oil pressure gauge or raising and lowering the piston rod of the hydraulic cylinder by the proportional control device to a predetermined pressure, so the structure is complicated due to the control device and piping. There was also the problem of becoming expensive.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, in the present application, a brush supporting device which supports a brush so as to be able to swing vertically in a vehicle body and raises / lowers a brush by a brush raising / lowering rod is provided. A ground load adjusting mechanism is provided that includes an elastic member that can act on the force (for changing the ground load) and an adjusting rod that changes the state of the applied elastic force by the elastic member.

The grounding load adjusting mechanism has an elastic member having one end attached to a fixed point, the other end of which is attached to an adjusting rod, and which is adjusted by a brush supported by a suspension arm so as to be vertically swingable with respect to the vehicle body. An elastic force can be applied upward by a rod. Alternatively, the other end of the elastic member having one end attached to the fixed point is attached to the adjustment rod, and the elastic force is downwardly applied by the adjustment rod to the brush supported by the suspension arm so that it can swing vertically with respect to the vehicle body. It is configured so that it can be given. Or
One end of the elastic member is attached to the adjustment rod, and the other end is connected to a suspension arm that supports the brush so that it can swing vertically with respect to the vehicle body by a brush lifting rod, and the elasticity provided to the suspension arm by the adjustment rod Configure to change force. Such a brush support device provided with a ground load adjustment mechanism,
Another elastic member that acts on the brush in a direction different from the direction in which the elastic force of the elastic member attached to the adjustment rod acts may be provided between the brush and the vehicle body.

In the above-mentioned grounding load adjusting mechanism, an elastic member for adjusting the force is attached to each of the plurality of adjusting rods, and the state of applying the elastic force acting on the brush support device is controlled in multiple stages by operating each adjusting rod. It is preferable to be configured so as to be changeable.

[0007] In the brush lifting device, it is preferable that the lifting and lowering of the brush and the rotation and stop of the brush by the brush rotating device are linked. More specifically, the present brush support device further includes a locking member for the adjusting rod for locking the adjusting rod to the vehicle body in a fixed state, and a brush raising and lowering rod when the brush is positioned at the suspended position by the brush raising and lowering rod. Has a locking member for a brush elevating rod for locking at the position. If the adjusting rod and the brush lifting / lowering rod are provided at positions where the operator can operate the driver's seat, it is convenient for operation.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the brush support device of the present invention will be described with reference to FIGS. The brush support device 1 is capable of vertically moving the brush 2 between the lifting position A and the grounding position B, and the left and right suspension arms 3, 4 for supporting the cleaning brush 2 and the cleaning brush 2 so as to be swingable in the vertical direction. The ground load adjusting mechanism 5 for adjusting the ground load (the contact width of the brush 2 against the road surface) between the brush lifting rod 23 and the sweeping brush 2 and the clutch for operating the rotating device 6 for rotating and stopping the sweeping brush 2 And a wire 41 operating section. FIG.
As shown in FIG. 1, bearings 8 are fixed to the left and right sides of the body 7 of the cleaning car, and an arm mounting shaft 9 is supported by the bearings 8.
One ends of the left and right suspension arms 3, 4 are attached to both ends of the arm, so that the suspension arms 3, 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 on the rotating brush 2, and the sweeping brush 2 is rotatable. In addition, the sweeping brush 2 is moved by the swing of the suspension arms 3 and 4 to a lifting position A shown by a solid line in FIG.
And a contact position B indicated by a two-dot chain line.

In FIG. 2, a swinging lever 1 having one end welded to an arm mounting shaft 9 is provided inside one end of the left suspension arm 3.
3 are integrally mounted. One end of a rod 14 is swingably connected to the other end of the swing lever 13.
A bracket 15 is erected on the vehicle body 7, and one end of a lever 17 is swingably attached to a pin 16 fixed at a substantially intermediate position of the bracket 15, and a rod 14 is attached to the other end of the lever 17. The other end is swingably connected.
A spring retaining bolt 18 is screwed to a portion (left side in FIG. 1) of the lever 17 in front of the pin 16, 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 hung brush lifting spring 20 is hung. 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. During normal cleaning, the sweeping brush 2 is grounded on the road surface 21 with a grounding load lighter than its own weight. The lever 17 is connected to the link member 22 via a long hole provided at one end of the link member 22.
The other end of 2 is connected to a brush raising / lowering lever (brush lifting / lowering rod) 23 that is swingably provided on the bracket 15.
The brush elevating lever 23 is provided at a position operable in the driver's seat D (FIGS. 1 and 12). When the sweeping brush 2 is at the lifting position A as shown by a solid line in FIG. It is locked by the stop member 24 at the position A1 shown by the solid line.

Next, the ground load adjusting mechanism 5 will be described. The grounding load adjusting mechanism 5 includes a load switching lever (adjusting rod).
25, a pressure spring 26 as an elastic member for force adjustment, the lever 17, the rod 14, the swing lever 13, and the suspension arms 3, 4. Load switching lever 2
Reference numeral 5 designates a position which can be operated in the driver's seat D similarly to the brush lifting lever 23 and is provided on the pin 16 so as to be swingable. A pressing portion 27 protruding to the left of the vehicle body (in the direction perpendicular to the paper surface of FIG. 1) capable of pressing the upper surface is formed. A spring retaining bolt 28 is screwed into a portion of the load switching lever 25 behind the pin 16, and an upper end of the spring retaining bolt 28 is connected to a bolt (fixed point) 29 screwed to the vehicle body 7. The lower end of the pressurizing spring 26, which is a hooked elastic member for force adjustment, is hooked. The pressure spring 26 is a tension coil spring, has an elastic force larger than the elastic force of the brush lifting spring 20, and always has the load switching lever 25.
Of the sweeping brush 2 is increased during heavy cleaning (when there is a large amount of dust on the road surface or when there is large unevenness on the road surface). The figure shows a state in which the cleaning brush 2 is fixed to the vehicle body 7 so that the elastic force of the pressing spring 26 does not act on the sweeping brush 2 at the time of normal cleaning (when the amount of dust on the road surface is small or when the unevenness of the road surface is small). A load switching lever locking member 30 for positioning the load switching lever 25 at a position P1 indicated by a solid line 1 is provided on the vehicle body 7. The spring 26 for pressurizing and the spring 20 for lifting the brush have a slight variation in spring length with respect to a new sweeping brush 2 as in the case where the sweeping brush 2 is worn out by cleaning and has a small diameter. Even if there is, the spring constant is set small enough to keep the elastic force (pressing force, lifting force) acting on the sweeping brush 2 substantially constant.

Next, the rotating device 6 will be described. Body 7
The spring retaining bracket 32 as shown in FIGS.
The spring hooking bracket 32 has one end of a pulley urging spring 33 hooked thereon.
In addition, an L-shaped bracket 34,
35 are erected. A swing shaft 36 is rotatably provided between the brackets 34 and 35. A U-shaped member 37 is integrally welded to one end side (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 U-shaped member 37. Pulley biasing spring retaining bolt 3
8 is screwed, and a lever 39 is attached to the other end of the V-shaped member 37.
Is pivotally connected at one end. 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 pivotally supported by a bracket 40 by a shaft 40a. The other end 41b of the clutch wire 41 having one end 41a connected to the brush lifting lever 23 is connected to 40. A pulley support member 43 on which a tension pulley 42 is supported is welded to the other end (the right end in FIG. 2) of the swing shaft 36. A pulley 4 to which a driving force from a driving source (not shown) is transmitted to the vehicle body 7.
The pulley 44 is provided rotatably, and the pulley 44 is integrally provided with a pulley 45. Pulleys 46 and 47 integrally formed are provided at the right end of the arm mounting shaft 9 so as to be rotatable relative to the shaft 9 via a bearing (not shown). A pulley 48 is keyed to the right end of the brush rotating shaft 12. Pulleys 45 and 46 and tension pulley 42
, A belt 49 is wound around the pulleys 47 and 48.
The driving force from the driving source is transmitted to the sweeping brush 2. Incidentally, 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 presses it down to the position B2 indicated by the two-dot chain line in FIG. The pressing operation of the brush lifting 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 ground position B shown by the two-dot chain line. Then, the sweeping brush 2 is grounded to the road surface 21 by the brush lifting spring 20 with a ground load smaller than the substantially constant weight of the brush. The load switching lever 25 is held at a position P <b> 1 indicated by a solid line in FIG. 1 by a locking member 30, and the elastic force of the pressing spring 26 does not act on the brush 2. When the brush lifting lever 23 is pressed down, the clutch wire 41 is pressed.
Is loosened, and the tension pulley 4 is
2 is urged to apply tension to the belt 49, and FIG.
The tension pulley 42 moves to a position B2 indicated by a two-dot chain line, tension is applied to the belt 49, and 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. The sweeping brush 2 is rotated by the grounding load reduced by the lifting force of the lifting spring 20 with respect to its own weight while following the unevenness of the road surface 21 by the grounding load and the dust on the road surface 21 is transferred to the vehicle body 7. It is charged and collected into a storage section (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 very uneven, an operator in the driver's seat with the brush lifting lever 23 depressed pushes the load switching lever 25 from the locking member 30. remove. Load switching lever 25
Is released from the locking member 30, the pressing portion 27 urged 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 and the like. When the cleaning surface 21 has a large amount of dust or has irregularities, the brush 2 can be further ground compared with the normal cleaning.
Is strongly pressed by the road surface 21 and the unsweeped portion is eliminated.

At the end of the cleaning operation, if the load switching lever 25 has been 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 to the locking member. Then, the sweeping brush 2 is lifted to the lifting position A. Brush lifting lever 2
When the pulley 3 is pulled up, the clutch wire 41 is pulled, and the tension pulley 4
2 moves to the position A2 indicated by the solid line in FIG. 4, the tension of the belt 49 is lost, the transmission of the driving force is stopped, and the rotation of the sweeping brush 2 is stopped.

Next, second to seventh embodiments will be described. In the second to seventh embodiments, the same components are denoted by the same reference numerals. FIGS. 5 to 11 show a brush support device 1 provided with a ground load adjusting mechanism according to the second to seventh embodiments, in which a brush lifting / lowering rod 60 is detached from a locking member 61 and a sweeping brush 62 is provided. Indicates a state in which it is in contact with the road surface 21. In the second to fifth embodiments, suspension arms 65, 65 are connected to the right and left sides of a vehicle body 64 via a swingable rod 63, respectively, 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 of the suspension arm 65 rotatably supports the sweeping brush 62.
2 is moved to a ground position B and a 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 so that an elastic force can be applied to the brush 62 in an upward direction. The other end of a lifting coil spring (elastic member for force adjustment) 66 is connected to the brush lifting rod 60, one end of which is connected to the vehicle body 64, and the other end of a pressurizing coil spring 67 that applies a downward elastic force to the brush 62. Are connected to form a ground load adjusting mechanism. Except during heavy cleaning, the adjustment rod 69 is
0, the pressing portion 71 of the adjusting rod 69 presses the brush lifting / lowering rod 60, and the sweeping brush 62 presses the pressing coil spring 67.
The lifting elastic force of the lifting coil spring 66 is applied against the pressing elastic force, and the sweeping brush 62 is grounded with a substantially constant small grounding load. Further, at the time of heavy cleaning, the adjusting rod 69 is locked by the locking member 70 and held in a fixed state with respect to the vehicle body 64, whereby the pressing portion 71 is separated from the brush lifting / lowering rod 60, and only the elastic force of the pressing coil spring 67 is provided. As a result, 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 lifting coil spring (force adjusting elastic member) 66 for applying an upward elastic force to the sweeping brush 62 to the adjusting rod 69 is provided. The lifting coil spring 66 is connected to the brush lifting rod 60.
Is connected to the vehicle body 64 at a position opposite to the position at which the lifting coil spring 66 is connected to the swing center of the brush lifting / lowering rod 60, and is connected to the sweeping brush 62 in a downward direction. The other end of the pressurizing coil spring 67 for applying elastic force is connected to form a ground load adjusting mechanism. At the time of normal cleaning, the adjusting rod 69 is fixed to the vehicle body 64 locked by the locking member 70.
, And the sweeping brush 62 is provided with a substantially constant ground contact load in which the elastic force of the pressing coil spring 67 and the elastic force of the lifting coil spring 66 are applied. Further, at the time of heavy cleaning, the adjusting rod 69 is detached 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 is lost, and the elasticity of the pressing coil spring 67 is reduced. A large force is applied, and a substantially constant contact load larger than the contact load during normal cleaning is obtained.

In the fourth embodiment, as shown in FIG. 7, one end of an adjusting rod 69 is swingably connected to a vehicle body 64, and a force adjusting gas for imparting an upward elastic force to the sweeping brush 62. The other end of the spring 72 is connected to form a ground load adjusting mechanism. Except during heavy cleaning, the adjusting rod 69 is detached from the locking member 70 and the pressing portion 71 presses the brush elevating rod 60 upward.
Due to the upward elastic force caused by 2, the load becomes a substantially constant ground load lighter than its own weight. 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 with only the ground load of its own weight.

In the fifth embodiment, as shown in FIG. 8, the brush raising / lowering rod 60 of the third embodiment does not include a pressing coil spring, and the adjusting rod 69 is locked during normal cleaning. Locked by the member 70, the resilient force of the lifting coil spring 66 is applied to the sweeping brush 62 to reduce the grounding load. During heavy cleaning, the adjusting rod 69 is removed from the locking member 70, and the lifting coil spring 66 As the elastic force is reduced, the contact load is increased, and the contact is made with a substantially constant contact load.

A sixth embodiment will be described. FIG.
As shown in FIG.
Arm 65 is provided on the vehicle body 64 so as to be rotatable, and the outer and inner surfaces are interposed between the suspension arm 65 and the vehicle body 64 by being baked.
The rubber-type tensioner (elastic torsion bar) 73 twisted so as to impart an upward elastic force to the sweep brush 62 has a ground contact load smaller than its own weight.
As shown in FIG. 10, an outer surface and an inner surface of a rubber tensioner 74 are baked and fixed integrally between the vehicle body 64 and the adjusting rod mounting member 77, respectively.
Reference numeral 4 denotes a state in which the rubber-type tensioner 74 is twisted by a predetermined amount between the vehicle body 7 and the adjustment rod mounting member 77. The adjustment rod 69 is integrally fixed to an end portion of the adjustment rod mounting member 77. The grounding load adjusting mechanism is configured to apply a downward elastic force to the sweeping brush 62 via the. At the time of normal cleaning, the adjusting rod 69 is positioned so that the pressing portion 71 does not abut the suspension arm 65 by the locking member 70, and a substantially constant ground contact is obtained by subtracting the elastic force of the tensioner 73 from the weight of the sweeping brush 62. During heavy cleaning, the adjusting rod 69 is detached from the locking member 70 and the pressing portion 71 presses the suspension arm 65 by the torsional force of the tensioner 74 to provide a substantially constant ground contact load that has increased from that during normal cleaning. Thus, the rubber tensioners 73 and 74 are
5. If used for the swing fulcrum 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 sweeping brush 62 is rotatably supported, and a suspension arm 65 swingably supported by a vehicle body 64 integral with a brush lifting rod 60.
Adjusting 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 and 69b are provided so as to be swingable to constitute a ground load adjusting mechanism. By disengaging the adjusting rods 69a, 69b from the locking members 70a, 70b, respectively, the pressing portions 71a,
71b respectively presses or separates the suspension arm 65, and the ground load is substantially constant only when the sweeping brush 62 has its own weight.
The state can be changed in multiple stages to a state where the elastic force of 5a is applied and increased, a state where the elastic force of the spring 75b is applied and reduced, and a state where the elastic force of the springs 75a and 75b is applied.

In the present invention, the elastic member is, for example, a coil spring, a torsion bar having elasticity, a gas spring, or the like. It may be a member, 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 adjustment rod. It is preferable because it is compact. 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-described embodiment, and one is a coil spring and the other is a coil spring. Any combination may be used, such as a gas spring. A gutter 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 in place of the sweeping brush is supported to be movable up and down with respect to the vehicle body 7. You may apply to an apparatus. Further, as means for stopping rotation of the brush in conjunction with raising and lowering the brush, vertical movement of the lifting rod is detected by a limit switch, or swing of the suspension arm is detected by a limit switch, and a brush provided on the suspension arm is used. The rotation of the brush is turned ON and OFF by stopping the rotation of the hydraulic motor and electric motor for rotation.
F may be applied. Further, the adjustment rod may be provided so as to slide on the vehicle body, and the slide of the adjustment rod may switch the load of the grounding load acting on the brush.

[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 state of applying the elastic force by the elastic member. Since the grounding load is set to be almost constant in two or multiple stages by the adjustment mechanism, there is no need for a pressure gauge or control device as compared with the conventional method in which the cylinder is controlled and the grounding load is adjusted to a predetermined value depending on the cleaning state. And the structure is simplified. This results in lower costs. In addition, since the brush rotates and stops in conjunction with the lifting and lowering of the brush by the brush lifting and lowering rod, the operation at the time of cleaning becomes less complicated, and the brush lifting and lowering rod and the adjusting rod are provided at positions where the operator can operate in the driver's seat. Therefore, the operator does not need to move from the driver's seat to operate the brush, which is preferable.

[Brief description of the drawings]

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

FIG. 2 is a II view of FIG.

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

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

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

FIG. 6 is a conceptual diagram illustrating 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.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Brush support device 2,62 Sweep brush 3,4 Suspension arm 5 Ground load adjustment mechanism 6 Brush rotation device 19,29 Bolt (fixed point) 20,26,66,67 Coil spring 23,60 Brush lifting rod 24,61 Locking member for brush lifting rod 25, 69 Adjusting rod 30, 70 Locking member for adjusting rod 72 Gas spring 73, 74 Torsion rod

Claims (9)

[Claims] 1. A brush supporting device for supporting a brush in a vehicle body so as to be able to swing vertically and moving the brush up and down by a brush raising / lowering rod, comprising an elastic member for adjusting a force which can act on the brush supporting device and the elastic member. A brush support device comprising a ground load adjusting mechanism including an adjusting rod for changing a state of applying elastic force. 2. An elastic member having one end attached to a fixed point, the other end of which is attached to an adjusting rod, and a brush supported by a suspension arm so as to be able to swing up and down with respect to the vehicle body. The brush supporting device according to claim 1, wherein the ground load adjusting mechanism is configured to be capable of applying an elastic force. 3. An elastic member having one end attached to a fixed point, the other end of which is attached to an adjusting rod, and a brush supported by a suspension arm so as to be able to swing up and down with respect to the vehicle body. The brush supporting device according to claim 1, wherein the ground load adjusting mechanism is configured to be capable of applying an elastic force. 4. One end of the elastic member is attached to an adjusting rod, and the other end is connected to a suspending arm that supports the brush so as to be vertically swingable with respect to the vehicle body, and is provided to the suspending arm by the adjusting rod. 2. The brush supporting device according to claim 1, wherein the ground load adjusting mechanism is configured to change the elastic force. 5. A brush, wherein another elastic member acting in a direction different from a direction in which an elastic force of an elastic member attached to the adjusting rod acts on the brush is provided between the brush and the vehicle body. The brush support device according to any one of claims 1 to 4. 6. An elastic member for adjusting a force is attached to each of the plurality of adjusting rods, and a state of applying an elastic force acting on the brush supporting device can be changed in multiple stages by operating each of the adjusting rods. The brush supporting device according to claim 1, wherein a ground load adjusting mechanism is configured. 7. The apparatus according to claim 1, wherein lifting and lowering of the brush and rotation and stop of the brush by the brush rotating device are linked.
The brush support device according to any one of claims 1 to 6. 8. An adjusting rod locking member for locking the adjusting rod in a fixed state with respect to the vehicle body, and a brush raising / lowering rod for locking the brush lifting / lowering rod at the suspended position when the brush is positioned at the suspended position. The brush supporting device according to any one of claims 1 to 7, further comprising a brush lifting / lowering rod locking member. 9. The brush supporting device according to claim 1, wherein the adjusting rod and the brush lifting / lowering rod are provided at positions where an operator can operate the driver's seat.