JPH11280034A - Braking device for cleaning vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a braking device capable of holding a cleaning vehicle at a stop position securely when the cleaning vehicle is stored or parked. SOLUTION: In a cleaning vehicle of attachment type having right and left side members 1 allowing the insertion of a fork 25 of a fork lift truck therein, a braking arm 16 is provided on an outer face on a front side of the side member 1 on one side so as to turn vertically. When this cleaning vehicle is stored or parked, the braking arm 16 is turned downward and is fixed by an arm stopper and a lock hook in a condition in which it stands substantially straight. Consequently, a lower end part of the braking arm 16 is brought into contact with a floor surface to support it in such a way that a castor 10 floats slightly from the floor surface in order to give travel resistance to the cleaning vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking system for a cleaning car used for cleaning a floor of a factory or a warehouse.

[0002]

2. Description of the Related Art An ordinary general cleaning car is equipped with a power unit such as an engine or a battery. The power unit rotates a wheel, and a side brush and a dust for moving dust forward in the traveling direction to the center. By rotating a main brush for sweeping the dust into the dust collection box, the cleaner travels on the floor and is cleaned. FIG. 6 shows a conventional hand-held (walking type) cleaning vehicle that walks while standing at the rear of the vehicle body. As shown in the figure, a conventional hand-operated cleaning vehicle has a front wheel 32 as a driving wheel on the front side of a vehicle body 31.
And a rear wheel (caster) 33 as a driven wheel on the rear side. In many cases, the push-type cleaning vehicle travels by rotating the front wheel 32 by a traveling motor driven by a battery mounted on the vehicle body 31 as a power source, and the side brush 34 and the main brush 3 by the cleaning motor.
5 is rotated to perform a floor cleaning operation.

[0003] By the way, when an external force acts or the floor surface is inclined when the cleaning car is stored (at the time of parking),
Conventionally, since there is a possibility of self-running (moving), a caster with a stopper 33 as shown in FIG. I have. This caster with stopper 33
Is provided with a lock lever 33a for fixing or releasing the rotation of the tire.
By pressing down the rear part of the tire, the rotation of the tire is fixed, and when running, the tire can be released by lifting.

[0004]

However, in the conventional braking device as described above, since the brake is applied to the rotation of the tire of the caster with stopper 33, it is difficult to secure a large braking force structurally. Yes, and depending on how the lock lever 33a is operated, there is a possibility that the effectiveness of the brake is weakened. That is, the conventional braking method has a problem in terms of reliability for securing the cleaning vehicle at the stop position.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to surely hold a cleaning vehicle at a stop position when the cleaning vehicle is stored or parked. It is an object of the present invention to provide a braking device capable of performing the following.

[0006]

To achieve the above object, the present invention is configured as follows. That is, the invention of claim 1 is a cleaning device of a cleaning car configured to be attachable to a forklift, and moves by contacting at least one of front and rear of a frame provided with wheels for traveling with a floor surface. A braking member for imparting resistance is provided so as to be vertically movable.

[0007] According to the first aspect of the present invention, when the cleaning car is stored or parked, the braking member is lowered to abut the floor surface, thereby imparting movement resistance to the cleaning car. Can be. According to this type of resistance application, it is possible to provide a stronger and constant movement resistance as compared with the conventional type in which the brake is applied to the rotation of the tire, and the cleaning is performed as long as the braking member does not slip on the floor surface. The vehicle can be reliably held at the stop position.
Therefore, it is desirable to provide a slippery material made of a material having a high friction coefficient, such as rubber, at least at a contact portion of the braking member with the floor surface. In addition, at the time of cleaning work by a cleaning car, if the braking member is raised to a position away from the floor surface,
Does not interfere with cleaning work. The operation of moving the braking member up and down as described above can be performed in a state in which a heavy-duty cleaning truck that is difficult to lift by human power is lifted by a forklift, and thus the operation is simple.

In this case, as in the second aspect of the present invention, in the cleaning device for a cleaning car according to the first aspect, when the braking member comes into contact with the floor, the wheel on the side is lifted off the floor. It is desirable. With this configuration,
Since the movement resistance is applied in a state where the vehicle weight is sufficiently applied to the braking member, the cleaning vehicle can be more reliably held at the stop position.

According to a third aspect of the present invention, in the cleaning device for a cleaning vehicle according to the first or second aspect, the invention is applied to a cleaning vehicle configured to be detachable from a forklift, and the braking member abuts on a floor surface. A braking position that imparts movement resistance, and a braking release position that releases movement resistance by moving away from the floor, and is configured to be rotationally displaceable, and is fixed to the frame by locking means in the displaced position. It was done.

[0010] The cleaning truck mounted on the forklift can freely move up and down along the mast of the forklift. Therefore, at the time of storage or parking, the braking member is rotated to the braking position with the cleaning vehicle lifted once, fixed to the frame by the locking means, and then the cleaning member is lowered to the floor surface by lowering the cleaning vehicle to the floor surface. In contact therewith, movement resistance can be imparted to the cleaner. Further, when the cleaning operation is performed by attaching the cleaning vehicle to the forklift, the braking is released by rotating the braking member to the braking release position while the cleaning vehicle is once lifted and fixing the braking member to the frame by the locking means. be able to. That is, according to the third aspect of the invention, since the turning operation of the braking member to the braking position or the braking release position can be performed in a state in which the cleaning car is lifted, the operation can be easily performed, and the braking can be performed. Since the position of the member can be visually recognized, it is effective in preventing forgetting the operation.

According to a fourth aspect of the present invention, in the cleaning device for a cleaning vehicle according to the third aspect, a spring having one end connected to the frame side and the other end connected to the braking member across the rotation fulcrum of the braking member is provided. The biasing force of the spring against the braking member is such that, when the braking member is rotationally displaced, the connecting portion with the braking member side extends a straight line connecting the connecting portion with the frame side and the rotational center of the braking member. It is set so that it is reversed on the line. According to the invention of claim 4 having such a configuration, the rotational displacement operation of the braking member can be easily performed using the spring force.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is directed to an attachment-type sweeper mounted on a forklift and used for floor cleaning of factories, warehouses, and the like. FIG. 1 is a side view of the cleaner, and FIG. It is a top view.
The cleaning vehicle according to the present embodiment includes left and right side members 1 extending parallel to the front-rear direction as constituent members of a frame.
The left and right side members 1 are formed in a rectangular cross section or a U-shaped cross section in which the lower surface side is opened, and constitute a fork pocket portion for inserting a fork of a forklift. That is, the cleaner is mounted on the forklift by inserting the L-shaped fork 25 mounted on the lift bracket 26 which can be moved up and down along the mast of the forklift into the side member 1 as shown by an imaginary line in the drawing.

The left and right side members 1 are connected to each other by a brush box 2 having an open bottom at the center lower surface, connected to each other by a tie beam 3 at the rear lower surface, and soared at the front upper surface during cleaning work. The filters are connected to each other by a filter box 4 provided for suctioning fine dust, thereby securing a required frame strength. In the brush box 2, the main brush 5 is accommodated in a state where the axial direction is the vehicle width direction and the lower side is exposed from the lower surface of the box, and both end shafts are rotatably supported by the box side wall. ing. The tie beam 3 has both left and right ends suspended downward, and a rear wheel 7 is rotatably mounted on an axle 6 provided at the left and right suspended parts.

Below the front part of the side member 1, that is, below the filter box 4, a dust collection box 8 for collecting dust swept by the main brush 5 is arranged. Has a dust collecting port 8a with a rubber lip 8b for dust guide on the rear surface.
The dust collection box 8 has a front end upper portion rotatably attached to the front end portions of the left and right side members 1 by pins 9, and a dust collection port 8a having a substantially horizontal dust collection position; 8a is rotatable and displaceable to a dust disposal position where it faces downward.

That is, when the cleaning truck is placed on the floor, the caster 10 as a front wheel provided on the bottom of the box is placed on the floor so that the dust collection port 8 can be opened.
a is rotationally displaced to a dust collection position facing the main brush 5, and is always held at the dust collection position by a hooking means (not shown). When the fork 25 is lifted and the cleaner is lifted from the floor and the holding by the hooking means is released, the dust collection box 8 is moved by its own weight.
a is rotated downward to a dust disposal position where the dust is disposed downward, and the return to the dust collection position after the dust disposal is performed by the casters 10 when the fork 25 is lowered and the cleaner is lowered to the floor surface. This is done by being pushed up. Note that an opening is provided on the upper surface of the dust collection box 8, and the opening communicates with the filter box 4 at the dust collection position.

Further, a side brush 11 for collecting dust in the front in the traveling direction toward the center is provided in front of the right hand of the cleaner.
It has. The side brush 11 is rotatably attached to a tip end of a brush support arm 12 rotatably attached to the front end of the right side member 1 via a rotating shaft 13 extending in a vertical direction, and is always in contact with the floor surface. It is placed in a state, but is configured to be able to jump up together with the brush support arm 12 by hand when not in use.

In this embodiment, although not shown, the rotational force of the rear wheel 7 that is driven and rotated when the cleaning truck is pushed down by a forklift with the cleaning truck lowered on the floor surface is omitted. By transmitting the power to the main brush 5 and the side brush 11 via an appropriate power transmission means such as a chain type or belt type transmission mechanism or a gear type increase / decrease gear,
They are configured to be driven to rotate. Further, a filter unit is accommodated in the filter box 4, and the dust blown up by the sweeping of the main brush 5 is sucked through the upper opening of the dust collection box 8 by a dust collecting blower to be filtered. It is composed of
The dust suction blower is also driven using the rotation of the rear wheel 7 in the same manner as the brush. The entire upper surface of the frame including the power transmission means and the dust suction blower and the like is covered by a body cover 14 provided on the upper portion of the side member 1 so as to be detachable or openable.

As shown in FIG. 1, the cleaning truck constructed as described above can be mounted on a forklift by inserting a fork 25 of a forklift into the side member 1 and properly stopping the forklift through a hook. it can.
Then, when the cleaning truck is pushed forward by the forklift in this state, the rotation of the rear wheel 7 is transmitted to the main brush 5 and the side brush 11 via the power transmission means.
That is, the floor brush can be cleaned by using the rotational force of the rear wheel 7 to rotate the side brush 11, the main brush 5, and the dust suction blower.

Next, a description will be given of a braking device 15 for holding the cleaning vehicle from moving from the stop position when the cleaning vehicle is removed from the forklift and stored or parked, with reference to FIGS. . In this embodiment, the braking device 15 is provided on the front outer surface of the left side member 1 on the side opposite to the side brush 11 of the left and right side members 1. Braking device 1
Numeral 5 is provided with a swing type braking arm 16 as a braking member which gives the cleaning vehicle a movement resistance for holding a stop position by contacting the floor. The upper end of the brake arm 16 is rotatably mounted by a support pin 17 protruding from the side surface of the side member 1. , And the movement resistance is released by upward rotation.

That is, the braking arm 16 has a lower end portion in contact with the floor and assumes a substantially upright posture, as shown in FIG. 4, and a lower end portion separates from the floor and assumes a substantially horizontal posture, as shown in FIG. And a rotation range of about 90 degrees by an arm stopper 18 having two front and rear stopper surfaces 18a and 18b to which a braking arm 16 protruding from a side surface of the side member 1 can contact. Set to range. A projection 16b is provided at the upper end of the braking arm 16 to contact the rear stopper surface 18b when rotating to the braking position. The arm length of the brake arm 16 is set so that the caster wheel 10 floats from the floor surface when the brake arm 16 is turned to the braking position. Therefore, in this state, the brake arm 16 applies the front load of the cleaning car. It becomes a supporting leg. In addition, as shown in FIG. 5, the lower end of the braking arm 16 has a substantially L
The L-shaped lower end is provided with a slip stopper 16 made of a material having a suitable elasticity and a high coefficient of friction such as rubber to prevent slipping on the floor surface.
a is fixed.

Further, the braking device 15 is provided with a lock wire (or bar) 19 as locking means for fixing the braking arm 16 at the displaced position. One end of the lock wire 19 is rotatably attached to the brake arm 16 via a mounting pin 20, and the other end is protrudingly provided on the side surface of the side member 1. The brake arm 16 is fixed at the position by selectively engaging the lock pin 21. Furthermore, the side member 1 has a braking arm 16.
Spring 2 as rotation assisting means for assisting the rotation displacement of
2 are provided. The extension spring 22 is connected to a pin 23 projecting from the side surface of the side member 1 and an attachment pin 20 for attaching the lock wire 19 at an end thereof. An extension of a straight line connecting the connecting portion with the member 1 and the rotation center of the braking arm 16 (hereinafter referred to as dead point DP).
Pin 2 so that the direction of action of the tensile force is reversed
The mounting positions 0 and 23 are set.

The cleaning device for a cleaning car according to the present embodiment is constructed as described above. When the cleaning car is mounted on a forklift and is used for cleaning work, as shown in FIG. The brake arm 16 is held at the brake release position. At this time, the braking arm 16 is
Is held in a substantially horizontal position along the side surface of the side member 1 while being pressed against the front stopper surface 18a of the arm stopper 18 by the arm stopper 18, so that it does not hinder the use of the vacuum cleaner and rattles during running. Nor. In addition, even if an external force unexpectedly acts on the brake arm 16, the brake arm 16 can be held at the specified brake release position by the lock wire 19.

On the other hand, when the cleaning car is removed from the forklift and stored or parked, first, the fork 25 is lifted to lift the cleaning car. Subsequently, when one end of the lock wire 19 is removed from the front lock pin 21 and the braking arm 16 is rotated downward, the operation direction of the tension spring 22 is reversed around the dead point DP, and the projection of the braking arm 16 is formed. Since 16b is held at the braking position where it comes into contact with the rear stopper surface 18b of the arm stopper 18, the lock wire 19 is hooked on the rear locking pin 21 at that position to fix the braking arm 16 at the same position.

Thereafter, when the fork is lowered to lower the cleaning vehicle, the left and right rear wheels 7 and the braking arm 16 are landed on the floor.
Since the fork 25 is supported at the point, the fork 25 is removed from the side member 1 in that state. In this way, as shown in FIG. 4, the cleaning vehicle removed from the forklift and stored or parked is provided with the movement resistance by the lower end of the L-shape of the braking arm 16 abutting against the floor surface. Therefore, even when an external force acts on the cleaning vehicle in the front-rear direction or the floor surface is inclined, it is reliably held at the stop position, and unexpected movement is prevented.

In particular, since the caster 10 is supported by the braking arm 16 in a state of being lifted off the floor, the movement resistance is enhanced by the action of the vehicle weight, and the stopping position holding force of the cleaning vehicle is further increased. Further, the turning moment in the front-rear direction applied to the braking arm 16 is received by the lock wire 19 or the arm stopper 18, and the cleaning vehicle can be reliably kept at the stop position unless the braking arm 16 slips on the floor surface. The slip is prevented by a slip stopper 16a provided at the lower end of the L-shape.

As described above, according to the present embodiment, the movement resistance is imparted to the cleaner by bringing the braking arm 16 into contact with the floor, so that the rotation of the tire of the conventional caster is locked. In comparison, a stronger moving resistance can be applied, and the moving resistance does not fluctuate depending on the operation of the brake arm 16 and is always constant, so that the cleaner can be reliably held at the stop position. Becomes In addition, the braking arm 16 can be pivotally displaced to the braking position or the braking release position in a state where the cleaning car is lifted, and the rotation of the braking arm 16 is performed by the tension spring 22 in which the direction of action of the tensile force is reversed at the dead point DP. Since the operation is assisted, the rotation operation can be easily performed. Further, since the position of the brake arm 16 can be easily visually recognized, it is effective in preventing forgetting the operation.

In the present embodiment, the braking device 15 is provided on one of the side members 1, but may be provided on both. Further, the braking arm 16 is rotated and displaced between the braking position and the braking release position, but the braking member 16 can be displaced between a position where the braking member contacts the floor surface and a position away from the floor surface. It is possible to use a braking member that moves up and down linearly, such as a screw jack, for example.

Further, in the present embodiment, a case where the present invention is applied to a cleaning car of an attachment type used by being mounted on a forklift and in which the side brush 11 and the main brush 5 are performed by using the rotation of the rear wheel 7 is used. Although described, the present invention may be applied to a cleaning vehicle of an attachment type, in which a wheel is driven by an electric motor or an engine driven by a battery as a power source, and a power device mounted type that drives a brush. In addition, the present invention is not limited to the attachment-type sweeper, but can be applied to a cleaner used in a form independent of a forklift. Further, the cleaning type is not limited to the sweeping type shown in the figure, but may be a suction type (vacuum type).

[0029]

As described in detail above, according to the present invention,
It is possible to provide a highly reliable braking device that can reliably hold the cleaning vehicle at the stop position when the cleaning vehicle is stored or parked.

[Brief description of the drawings]

FIG. 1 is a side view showing a cleaning vehicle with a braking device according to the present embodiment.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view showing the braking device, showing a braking released state.

FIG. 4 is a side view showing the braking device, showing a braking state.

FIG. 5 is a plan view showing a braking device.

FIG. 6 is a side view showing a conventional hand-held cleaning vehicle.

FIG. 7 is a perspective view showing a caster with a stopper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Side member 5 ... Main brush 7 ... Rear wheel 10 ... Caster 11 ... Side brush 15 ... Braking device 16 ... Braking arm 18 ... Arm stopper 19 ... Lock wire 22 ... Tension spring

Claims (4)

[Claims] 1. A braking device for a cleaning car configured to be mountable on a forklift, wherein at least one of a front and a back of a frame having wheels for traveling is provided with movement resistance by abutting on a floor surface. A cleaning device for a cleaning car provided with a braking member capable of moving up and down. 2. The cleaning device for a cleaning car according to claim 1, wherein when the braking member comes into contact with the floor surface, the wheel on the side is lifted off the floor surface. 3. A braking position which is applied to a vacuum cleaner configured to be attachable to a forklift, and in which a braking member applies a movement resistance by abutting on a floor surface, and releases a movement resistance by moving away from the floor surface. The braking device for a cleaning car according to claim 1, wherein the braking device is configured to be rotatable and displaceable to and from the braking release position and to be fixed to the frame by a locking means in the displaced position. 4. A spring having one end connected to the frame side and a second end connected to the braking member with the pivot point of the braking member interposed therebetween; 4. The device according to claim 3, wherein the connecting portion with the braking member is reversed at the time of the rotational displacement with respect to a line extending from a straight line connecting the connecting portion with the frame and the center of rotation of the braking member. Cleaning car braking device.