JP7360729B2 - tire lift device - Google Patents

Description

The present invention is a series of devices in which a tire mounting/detaching device, an air filling device, and a tire balancer device are arranged in a straight line, and the device is interposed between the air filling device and the tire balancer device to roll and move the tire. The present invention also relates to a tire lift device capable of lowering a tire removed from a tire balancer device onto the floor.

The tire attachment/detachment device can fit a tire onto a wheel, and can also remove a tire from a wheel. There are various types of tire mounting/detaching devices, but the mounting/detaching device for relatively small (small diameter) tires has a horizontal rotary table and has a tab attached to the outer periphery of the rotary table. It is possible to fix the wheel through the screw and attach the tire to the wheel.The tire rotates together with the wheel as the rotary table rotates, and at this time, by locking the pawl on the tire bead, the tire can be mounted on the wheel. Fits into the wheel.
Furthermore, a tire fitted to a wheel can be removed by engaging a pawl on the tire bead and rotating it together with the rotary table.

For example, the "tire attachment/detachment device equipped with a rotary table" disclosed in Japanese Patent Application Laid-open No. 2011-42303 can easily attach and detach flat tires and run-flat tires.
A tool consisting of a bead press roller and a demounting claw is attached to the tip of a shaft restrained from rotating on the side of the tire claw, and the shaft is fitted into a bearing to be supported and slidable in the axial direction. The tool attached to the tip of the shaft is attached so that its direction can be reversed, and a bead up roller is further provided below the tool.

The air filling device can fill air into a tire attached to a wheel. Air is filled into the tire to bring it to a predetermined internal pressure, but if the tire ruptures due to a worker's error or a tire defect, the worker or bystanders may be injured. A safety cover is provided around the air filling device to prevent this from happening.

``Tire Air Filling Method and Air Filling Device'' disclosed in Japanese Patent Application Laid-open No. 9-254746 discloses that when filling a tire with air, the tire bead part completely rests on and fits into the wheel bead, and the air is regulated. This is an air filling method that will reach the correct pressure.
This is an air filling method in which the internal pressure of the tire is measured by closing the on-off valve to isolate the tire from the air pressure source, and the operation of opening the on-off valve to fill air into the tire is repeated alternately. Fill the tire with air to a level that is somewhat higher than the pressure, but does not exceed 5 kg/cm2, and then remove the air from the tire.

The tire mounted on the wheel and filled with air is attached to a balancer device and can rotate at high speed around the main shaft. If the mass is perfectly balanced around the center of the wheel, no bending load will act on the main shaft, but if there is even a slight imbalance, the main shaft will be bent by centrifugal force.
The tire balancer device can measure the amount of unbalance of the tire and the unbalance position of the tire and display it on the display panel.
Therefore, workers fix weights (balance weights) around the outer circumference of the wheel to keep the entire tire balanced.

"Tire balancer device and balance weight heater" according to JP 2017-145835 rotates at high speed with a wheel attached to the tip of a rotating main shaft, and calculates the unbalance amount and unbalance position from the centrifugal force generated. This is a tire balancer device that measures and attaches a predetermined balance weight using double-sided tape.
That is, a heater is attached to the main body to heat it to an appropriate temperature when attaching the balance weight.

When installing wheels on a vehicle, a tire is installed on the wheel, the tire is filled with air, and the balance state is measured using a balancer device. If the wheel is not balanced, a balance is placed on the outer periphery of the wheel. The weight is fixed to correct the imbalance.
These operations are performed as a series of operations, but if each device is independent, it would be difficult to set and remove heavy tires. Of course, it also takes longer to complete the process to create a wheel that can be mounted on a vehicle.
That is, it is troublesome to lift the tire from the floor to set it, or to remove it and lower it to the floor.

"Tire attachment/detachment device equipped with rotary table" according to JP-A No. 2011-42303 "Air filling method and air filling device for tires" according to JP-A-9-254746 "Tire balancer device and balance weight heater" according to JP2017-145835

In this way, in order to create a wheel that can be installed on a vehicle, there is a process of attaching the tire to the wheel, a process of filling the tire with air, a balancer device is used to measure the balance state of the tire, and a balance is added to the outer circumference of the wheel. Each step is required to fix the weight and correct the unbalanced amount.
The problem to be solved by the present invention is to enable the above-mentioned steps to be performed continuously and efficiently, and particularly to provide a balancer lift interposed between an air filling device and a tire balancer device.

The balancer lift according to the present invention is arranged between an air filling device and a tire balancer device, and wheels filled with air and whose tires have a predetermined air pressure are moved on the lift and attached to the tire balancer device. It is configured so that
Therefore, the lift has an upper plate that moves up and down, and the upper plate has a slider that can move, but at the tip end on the air filling device side, the upper plate is at the top dead center and the bottom dead center. Time is restrained from moving.

A table that rotates in a horizontal plane is pivotally supported on the slider, and the wheels are placed on the rotary table, rotated 90 degrees to change direction, and are attached to the main shaft of the tire balancer device. The wheel attached to the main shaft rotates at high speed to measure its balance, and if necessary, a weight (balance weight) is fixed to the outer circumference of the wheel.
The wheel to which the weight is fixed is removed from the main shaft and placed on the slider of the lift, and is lowered and rolled from the slider onto the floor.
The lift is equipped with a foot switch at the lower end, and by stepping on the foot switch, the upper plate can be moved up and down. The specific means for moving the upper plate up and down is not limited, but generally an X-shaped cross link mechanism can be used.

The lift of the invention is placed between the air filling device and the tire balancer device. When the tire is filled with air and reaches a predetermined air pressure, the wheel is rolled and placed on the upper plate of the lift. By stepping on the foot switch, the top plate rises to the same height as the tire mounting surface of the air filling device, so that the wheels smoothly roll and rest on the top plate. A slider is attached to the upper plate, and a rotary table is pivotally supported on the slider.

The wheels rolling from the air filling device are placed on a rotary table, but when the upper plate of the lift is raised and located at the top dead center, the slider is restrained from moving. Therefore, the wheels are stably rolled and placed on the rotary table. Then, the wheel rotates 90 degrees to change its direction, and the upper plate lowers to align the center axis of the wheel with the main axis of the tire balancer device, and slides the wheel together with the slider to attach the wheel to the main axis. When attaching the wheel to the main shaft, there is no need to lift it by hand.

The mounted wheels rotate at high speed together with the main shaft, the balance condition is measured, and balance weights are attached as necessary. Once the balance measurement has been completed, the wheel is removed from the main shaft, the top plate is lowered and the wheel is rolled onto the floor.
By the way, another lift is disposed between the tire attachment/detachment device and the air filling device, and the wheel with the tire mounted thereon can be moved by rolling onto the air filling device. The lift can lift the tire and wheel onto the table of the tire attachment/detachment device by moving its upper plate up and down.

This is a front view of an embodiment in which a tire mounting/detaching device, an air filling device, and a tire balancer device are arranged in a straight line, and a lift is arranged between each device. This is a plan view of an embodiment in which a tire mounting/detaching device, an air filling device, and a tire balancer device are arranged in a straight line, and a lift is arranged between each device. When tires are placed on a tire lift. When the tire lift rises to place the tire on the table surface. When installing tires on wheels and rolling on a tire lift. FIG. 3 is a side view when the air filling device is filled with air by moving wheels. FIG. 3 is a front view when the air filling device is filled with air by moving wheels. When air-filled wheels are on a balancer lift. When the wheel rotates 90 degrees and changes direction on the rotary table of a balancer lift. When a wheel is attached to the main shaft of a tire balancer device. When the balanced wheels are lowered and lowered from the balance lift to the floor. FIG. 1 is a plan view and a front view of a specific example of a balancer lift according to the present invention.

FIGS. 1 and 2 show an embodiment according to the present invention, and show a front view and a plan view.
In the figure, 1 represents a tire mounting/detaching device (tire changer), 2 represents an air filling device, and 3 represents a tire balancer device, and these devices 1, 2, and 3 are arranged in a straight line.
There are various types of the tire mounting/detaching device 1, air filling device 2, and tire balancer device 3, and each device shown in the figure is just one specific example, so the specific structure of each device is limited. do not.

Since the devices 1, 2, and 3 are arranged in a straight line, a tire lift 4 is arranged between the tire mounting/detaching device 1 and the air filling device 2, and the tire lift 4 is arranged between the tire mounting/detaching device 1 and the air filling device 2. A balancer lift 5 is arranged between them. Therefore, the wheel 6 on which the tire is mounted by the tire mounting/detaching device 1 can be moved to the air filling device 2 by rolling on the upper plate 7 of the tire lift 4.
The air filling device 2 fills a tire mounted on a wheel with air to achieve a specified air pressure. The air filling device 2 is open on both sides so that the wheels 6 can pass therethrough, but the front and rear surfaces are covered so that the operator and other people nearby are not injured when the tire bursts.

The wheels 6 whose tires are filled with air roll and pass through the balancer lift 5, and are mounted on the tire balancer device 3. In the tire balancer device 3, when the wheels 6 rotate at high speed, if the wheels 6 are not balanced with respect to the central axis, centrifugal force based on the unbalance acts on the main shaft 8, causing it to bend.
The tire balancer device 3 can measure the centrifugal force and calculate the size and position of the balance weight attached to the outer circumference of the wheel.

FIG. 3 shows a case where the wheels 6 are mounted on the tire lift 4. The tire lift 4 is in a state where the upper plate 7 has been lowered and is at the bottom dead center, and the operator can roll the wheels 6 and place them on the upper plate 7.
FIG. 4 shows a case where the upper plate 7 is raised and the wheels 6 are lifted up, the wheels 6 are rotated 90 degrees to change direction, and the wheels 6 are rolled and moved onto the table 9.
FIG. 5 shows a state in which the wheel 6, which has been rotated by 90 degrees and has changed direction, is moved to the table 9. 3, FIG. 4, and FIG. 5 show a wheel 6 with a tire attached to the wheel. When a tire is attached to a wheel, the tire is lifted by the tire lift 4. The wheel is fixed to the table.
When the wheel 6 with a tire mounted thereon is moved toward the air filling device by the tire mounting/detaching device 1, it also rolls on the upper plate 7 of the tire lift 4.

FIG. 6 is a side view (view from the opening side) of the wheel 6 on which the tire is mounted, rolling on the tire lift 4 and moving to the air filling device 2.
The air filling device 2 fills the tires of the wheels 6 with a specified air pressure. The air filling device 2 has openings on the left and right sides for putting in and taking out the wheels, but covers are attached to the front and rear sides, so that when the tire bursts during the air filling operation, the air filling device 2 can be used to protect the air from flying tire pieces. Take care to prevent injury to yourself and those around you.
FIG. 7 is a front view showing the side of the air filling device 2 on which the cover is provided.

Once the air is filled to the specified air pressure, it can roll out from the outlet opening.
FIG. 8 shows a case where the wheels 6 rolled out from the outlet of the air filling device 2 are placed on the balancer lift 5.
This figure shows a case where the wheels 6 are placed on a slider 10 provided at the tip of the balancer lift 5. Although the slider 10 can move, it is fixed so that it does not move when the upper plate of the balancer lift 5 rises and is at the top dead center.

FIG. 9 shows a case where the wheel 6 rotates 90 degrees and changes direction. A horizontal rotary table 11 is pivotally supported on the slider 10, so that the wheels 6 placed on the rotary table can rotate and change their direction.
By lowering the upper plate to a suitable height, the slider 10 moves and the wheel 6 can be mounted on the main shaft of the tire balancer device 3.
The height of the wheels 6 shown in FIG. 9 is high, so that if the foot switch is depressed, they will descend.

FIG. 10 shows a case where the wheels 6 are mounted on the main shaft 8, and the wheels 6 at an appropriate height can be easily fitted onto the main shaft 8 by moving the slider 10. Of course, the axle 6 is positioned by moving slightly back and forth on the rotary table.
The balance state is measured by rotating the wheels 6 mounted on the main shaft 8 at high speed. That is, if the unbalanced wheels 6 rotate at high speed, centrifugal force will be generated, and based on this centrifugal force, the amount of unbalance and the unbalance position can be determined.
Based on this measurement result, a balance weight is attached to the outer periphery of the wheel, and a well-balanced wheel 6 is completed.

FIG. 11 shows a case where the balanced wheel 6 is removed from the main shaft 8 and the balancer lift is lowered.
The wheel 6 removed from the main shaft 8 is located at a predetermined height, but the upper plate is lowered by stepping on the foot switch. If the side surface of the wheel 6 is pressed, the slider 10 slides and moves to the tip, and the wheel 6 is rolled down from the inclined plate 16 provided at the tip.

FIG. 12 shows an embodiment of the balancer lift 5 according to the present invention, in which the upper plate 12 is supported by a link mechanism 13 crossed in an 12 can move up and down.
The slider 10 is attached to an upper plate 12 and can slide using the upper plate 12 as a guide, and a disc-shaped rotary table 11 is rotatably supported on the slider 10.
Therefore, the wheels 6 placed on the rotary table 11 can freely change their direction by rotating the rotary table 11, and can also move along the upper plate 12 by sliding the slider 10.

However, when the upper plate 12 rises and is at the top dead center, the slider 10 is fixed so that it cannot slide. The wheels 6 roll from the air filling device 2 and are placed on the rotary table 11, and rotate to change their direction. At this time, the slider 10 is fixed so that it does not move, making the work easier.
If the upper plate 12 is lowered so that the wheel 6 is attached to the main shaft 8 of the tire balancer device 3, the slider 10 can be freely moved and attached to the main shaft 8.
Further, even when the wheel 6 is lowered onto the floor after the balance measurement work is completed, the slider 10 is restrained from moving even when the upper plate 12 is located at the bottom dead center.

In the embodiment shown in FIGS. 1 and 2, the balancer lift 5 of the invention is arranged between the air filling device 2 and the tire balancer device 3, allowing the wheels 6 to pass therethrough. However, the device is not limited to being disposed between the air filling device 2 and the tire balancer device 3, but can also be used when being attached to the main shaft 8 of the tire balancer device 3.
A rotary table is not necessarily required if the lift is dedicated to a tire balancer device.

1 Tire mounting/detaching device 2 Air filling device 3 Tire balancer device 4 Tire lift 5 Balancer lift 6 Wheel 7 Upper plate 8 Main shaft 9 Table
10 sliders
11 Rotary table
12 Top plate
13 Link mechanism
14 base
15 foot switch
16 Inclined plate

Claims (4)

A series of devices in which a tire mounting/detaching device, an air filling device, and a tire balancer device are arranged in a straight line, and a lift is placed between each device so that the wheels can be moved without lowering them to the floor. In the balancer lift disposed between the air filling device and the tire balancer device, the balancer lift has an upper plate that moves up and down, and the upper plate has a rectangular shape and is attached to the upper plate and slides in the longitudinal direction. A horizontal rotary table is pivotally supported on the slider, and the slider is configured such that the upper plate does not move at the top dead center or the bottom dead center at the tip of the upper plate on the side of the air filling device. A balancer lift characterized by being restrained. 2. The balancer lift according to claim 1, further comprising an X-shaped link mechanism that expands and contracts by the operation of a cylinder as means for raising and lowering the upper plate. In order to attach the wheels to the main shaft of a tire balancer device, the balancer lift lifts the wheels. A balancer lift comprising: a slider that slides in the direction; and the slider is restrained at the tip of the upper plate so that the upper plate does not move at the top dead center and the bottom dead center. The balancer lift according to claim 3, wherein a rotary table is pivotally supported on the slider.

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