JPH027735Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to remove mud, etc. stuck to the tires of vehicles that are repeatedly carried in and out of the construction site, such as dump trucks, etc., from the public roads near the entrances and exits of construction sites in the civil engineering and construction fields. Regarding the improvement of the vehicle tire cleaning device which is installed for the purpose of preventing vehicle tire parts from being dropped and soiled, more specifically, when starting the cleaning of the vehicle's driving wheel tires, the driving wheel tires are cleaned by a built-in motor. The tires on the driving wheels of the vehicle are rotated at low speed through a rotary support shaft while cleaning the surface dirt by high-pressure water injection, and then the tires on the driving wheels of the vehicle are continuously spun at high speed by the vehicle's own engine drive. In a fully automatic cleaning device that uses centrifugal force desilting to remove and clean mud stuck between double tires, the rotational force of the motor is applied via the rotational support shaft to the motor-driven rotation state of the tire via the rotational support shaft. By using simple mechanical means to achieve a mechanism that instantaneously cuts off the motor-driven rotation without applying any harmful load to the motor even when the rotational driving force of the vehicle engine acts on it, The present invention relates to the provision of a vehicle tire cleaning device that greatly improves maintenance and inspection work.

In conventional vehicle tire cleaning equipment, an excessive rotational load is applied to the motor when the tire is rotated by a motor and transferred from cleaning by high-pressure water jet to centrifugal desilting by being rotated by the vehicle's own engine. This may cause malfunction of the motor itself, or a one-way clutch such as a cam clutch between the rotating support shaft and the motor, which transmits rotational force only in one direction, but does not transmit rotational torque in the opposite direction, is installed. However, during idle rotation, a large amount of heat is generated due to frictional sliding, which causes wear and tear on the clutch parts, resulting in significantly poor durability, necessitating periodic or frequent replacement of parts.

In view of the above-mentioned problems, the present invention allows tires to be rotated by the vehicle's engine without using a one-way clutch or the like, which is significantly inferior in durability, and at the same time, does not apply the drive rotation to the motor but cuts it off midway, and also prevents the generation of heat. The purpose of the present invention is to provide a vehicle tire cleaning device with significantly improved durability, the gist of which is to provide at least two parallel rotation support shafts for rotatably receiving vehicle tires; a motor for applying rotation to the rotational support shaft; an endless chain provided between the motor and the rotational support shaft in a slightly loose state between the drive extraction and intake portions; and the motor and the rotational support. It consists of an electromagnetic clutch placed in a suitable position between the shaft and the chain tension adjustment member that is in contact with the chain and set in a relationship that can follow the movement of the chain as it transitions from the state to the tensioned state. , Turn on the electromagnetic clutch by moving the adjustment member.
- It is at the point where it becomes OFF.

The details of the present invention will be explained based on illustrated examples. 1st
Figure 2 shows a typical planar configuration of the drive transmission system excluding the water cleaning equipment portion of the vehicle tire cleaning device according to the present invention, and Figure 2 shows the front view of the main part, which rotatably receives the tire T of the vehicle. At least two parallel rotation support shafts 1, in the example shown, are roll-shaped to protect the contact part with the tire T, and two parallel shafts 1 to receive the tire part T.
A rotary support shaft 1 in which pairs of gears are arranged side by side at a predetermined interval and gears 2 etc. fixed to each are continuously engaged with each other by a chain 3 etc., and a motor 5 for giving rotation to the rotary support shaft 1.
and an electromagnetic clutch 6 which is positioned between the rotary support shaft 1 and the motor 5 in the illustrated example by being engaged with them by chains 4 ₁ , 4 _{2 ,} etc., and between the motor 5 and the rotary support shaft 1 . Between the drive take-out part and the drive intake part, in the illustrated example, the gear on the motor 5 side, which is the drive take-out part 7, and the gear 2' on the rotation support shaft side, which is the drive intake part 8.
An endless chain ₄₁ , which is slightly longer than the minimum required length, is provided between the gear on the motor 5 side and the gear on the electromagnetic clutch 6 in the illustrated example, in a slightly loosened state, so that the direction of the vehicle travels. If the setting is in the direction of the arrow shown in the figure, the upper part 4' of the chain is left slack, or if the direction of vehicle movement is reversed, the lower part 4'' of the chain is left slack.
Or, similarly, if the vehicle traveling direction is reversed, motor 5
The upper part 4' of the chain, which is located on the opposite side with respect to the direction of movement, is set in a slack state so that the driving device etc., which are in contact with the chain ₄₁ and a little part of the chain ₄₁ The adjustment member 9 of the chain tension, which is set in a relationship that allows it to follow the movement accompanying the transition from a loosened state to a tensioned state, is brought into contact with the chain 4' on the slackened side, that is, the upper side in the example, from above, and _4. One end of the rod 10 to which a gear 2'' or the like which rotates freely by engaging with 1 is pulled downward by, for example, a coil spring 11, that is, in the direction in which the slackened part of the chain 4' is put into a tensioned state. The rod 10 is provided with an elastic force, and the other end of the rod 10 is pivotally connected to another fixing member 12 so as to be rotatably movable in the vertical direction. Switch 1 that can turn on and off the electromagnetic clutch 6, etc. at the position indicated by the dashed line in the figure.
It is composed of 3. Note that the chain that is connected to the chain tension adjustment member in a slightly loose state may be set between the drive take-out part and the drive intake part, and should be set between the motor 5 side gear which is the drive take-out part 7 in the illustration. In the above state, a chain is provided that transmits the drive from the electromagnetic clutch 6, indicated by 4 ₂ in the example shown in the figure, to the rotation support shaft side gear 2', which is the drive intake portion 8, instead of between the electromagnetic clutch 6 side gear and the electromagnetic clutch 6 side gear. The present invention can also be constructed in the same way.

Therefore, in the vehicle tire cleaning device according to the present invention, the target vehicle is entered into the device, and the front wheels, that is, the tires T of the non-driving wheels of the vehicle are supported by two rotationally supported tires T with the brakes on the tires T released. When it is positioned in contact with the shaft 1 and the motor 5 is driven to drive and rotate the motor-side gear, which is the drive take-out portion 7, in the direction shown by the arrow in FIG. 2, the lower chain 4'' is driven in the direction of the arrow. The rotation is transmitted to the gear on the side of the electromagnetic clutch 6. At this time, the upper chain 4' is only sent out sequentially from the gear on the motor side, which is the drive take-out part 7, so the chain tension adjustment member 9 remains in the same position and moves to the upper side. The chain 4' hangs downward and maintains the tensioned state.
Then, via the electromagnetic clutch 6 which is in the ON state, that is, the state in which rotational force is transmitted, the drive is transmitted to the chain ₄₂ , which is in the tensioned state in the illustrated example, and the rotation support shaft side gear 2', which is the drive intake part 8, is driven. By rotating, the tire T of the non-driving wheel supported in contact with the rotary support shaft 1 is brought into a low-speed rotation state, and high-pressure water is jetted by a cleaning water spraying equipment (not shown) to wash away dirt on the tire surface. Then, the vehicle is moved forward again, and the tires T of the rear wheels, that is, the drive wheels, are brought into contact with the rotation support shaft 1 with the brakes released and the gears in neutral, as in the case of the front wheels. In the first step, the motor 5 is driven in the same way as the front wheels, and the rear tires T are rotated at a low speed, and the dirt on the tire surface is washed off by high-pressure water injection.The second step is to move the gears of the vehicle to the drive position, e.g. The tire T is driven by a second engine, etc., and the engine is started to drive the tire T to a medium/high speed rotation state, and high-pressure water injection is also used as an auxiliary promotion means, and centrifugal force is used to drive the tire T into a concave area, especially between the tires of a double tire. Perform centrifugal desilting to remove stuck mud. At this time, the tire T is in a slightly loose state immediately after it has transitioned from a low-speed rotation state driven by the motor in the cleaning device to a medium-high speed rotation state driven by the engine in the vehicle, that is, the movement of the tire T ₄₁ that has been made slack remains passive until then. The tire T, which had been receiving rotation transmission in this state, changes to the active state of rotation shown by the dashed-dotted line arrow in the figure, and as a result, the electromagnetic clutch connected by the rotation support shaft 1 through the chain 4 ₂ in the example shown in FIG. The active rotational state is transmitted to the sixth gear. Here, since the rotational speed of the tire T is set higher in the active rotation state than in the passive rotation state, the rotational force of the gear 2' of the drive intake portion 8 is higher than that of the gear on the motor 5 side, which is the drive extraction portion 7. In other words, the rotational force of the electromagnetic clutch 6 side gear is more dominant. Therefore, when the electromagnetic clutch 6 side gear actively drives the upper chain 4', the chain 4'
is the chain tension adjustment member 9
From the sagging and tensioned state, as shown by the chain line in the figure, the chain tension adjustment member 9
Pushes up and becomes driven in a linear tension state. When the adjustment member 9 of the chain tension is pushed up, it operates, for example, a limit switch 13 provided at a predetermined position, turning the ON electromagnetic clutch 6 into an OFF state, that is, cutting off the transmission of rotational force. Preferably, the motor is also 5. It is also possible to cut off the power supply.

As shown in the figure, the rotation support shafts 1 have a length that is at least commensurate with the width through which the vehicle can pass, and are arranged in two pairs in parallel at a predetermined interval approximately perpendicular to the direction in which the vehicle passes, and each rotates at the same time. If possible, it could also be applied to two-axle drive tires, such as those seen on the rear wheels of large dump trucks. In addition,
In addition to the pair of rotation support shafts, another shaft may be provided at a predetermined interval to apply to a two-axis drive tire.

Further, 14 in the figure is an electromagnetic brake that stops the rotation of the rotation support shaft when the vehicle leaves the vehicle after cleaning.

The vehicle tire cleaning device according to the present invention as described above is a device for cleaning vehicle tires, in which a rotary support shaft rotatably receives a tire, a drive take-out portion, a drive intake portion, an electromagnetic A drive transmission system consists of a clutch and a motor that provides rotation through a chain, etc.
A chain with a slightly loose upper or lower side is provided between the drive take-out part and the drive intake part, and is in contact with the chain and can follow the movement of the chain as it transitions from the above state to the tension state. An adjustment member for the chain tension set in the relationship is provided, and the electromagnetic clutch can be turned on and off by moving the adjustment member for the chain tension.
Therefore, even if the drive torque of the vehicle engine, which exceeds the motor drive torque for centrifugal desilting, acts on the drive transmission system, the chain, which is set in a slightly loose state, is driven and tensioned, causing the chain to tighten. By pushing up the tension adjustment member and activating the electromagnetic clutch switch, the motor drive rotation transmission can be instantly shut off without applying any harmful load to the motor, which significantly reduces maintenance and inspection work of the device and improves durability. It is a marked improvement.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the planar configuration of the drive transmission system excluding the water washing equipment in a typical embodiment of the present invention, and Fig. 2 is an explanatory diagram of the operation in which main parts in the front direction of Fig. 1 are enlarged. . T: Vehicle tire part, 1: Rotation support shaft, 2,
2', 2'': Gear, 3: Rotation support shaft interlocking chain, 4 ₁ , 4 ₂ : Chain, 4': Upper chain,
4″: Lower chain, 5: Motor, 6: Electromagnetic clutch, 7: Drive extraction part, 8: Drive intake part, 9: Chain tension adjustment member, 10:
Rod, 11: Coil spring, 12: Fixing member, 13: Switch, 14: Electromagnetic brake.

Claims (1)

[Claims for Utility Model Registration] 1. A device for cleaning vehicle tires, comprising at least two parallel rotating support shafts for rotatably receiving the vehicle tires, and for imparting rotation to the rotating support shafts. an endless chain provided in a slightly loose state between the drive take-out and intake portions between the motor and the rotation support shaft; and an endless chain provided at a suitable position between the motor and the rotation support shaft. The electromagnetic clutch is comprised of an electromagnetic clutch and a chain tension adjustment member that is in contact with the chain and is set in a relationship that can follow the movement of the chain as it transitions from the state to the tensioned state, and the electromagnetic clutch is adjusted by movement of the adjustment member. of
A vehicle tire cleaning device that turns on and off. 2. Two pairs of the rotation support shafts are arranged in parallel at least perpendicularly at right angles to the vehicle passage direction, each having a length corresponding to at least the width through which the vehicle can pass, and each or only one pair is rotatable. A vehicle tire cleaning device according to claim 1 of the utility model registration claim. 3. As a chain tension adjustment member, it applies an elastic force to the gear that contacts the chain from above and engages with the chain to freely rotate to keep the chain in a downwardly tensioned state, and also A vehicle tire cleaning device according to claim 1 or 2, characterized in that it is associated with a switch for operating an electromagnetic clutch. 4. The vehicle tire cleaning device according to claim 1, 2, or 3, wherein the vehicle tire is a double tire of a dump truck.