JP2004142637A - Mud removing device for vehicle tyre - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control a vehicle such that the vehicle does not easily move out from a roller position at low cost in a mud removing device for a vehicle tyre. <P>SOLUTION: In the device for removing mud from the vehicle tyres by arranging a plurality of sets of pairs of rollers at front and front positions which are locked against the reverse rotating direction of the car, respond to at least the front and rear wheels of the vehicle, and are freely rotatable in a tyre forward direction, the uppermost surface position of the front roller 8a of the pair of rollers 8a/8b for mounting the tire 11 is set relatively higher than the uppermost surface of the rear roller 8b. In this way, it becomes easy to move out from the roller arranging position when reversely moving the vehicle. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicular tire removing apparatus for removing mud adhering to tires of vehicles such as trucks.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, at work sites such as civil engineering and land development, a device for removing mud attached to tires is used so that mud attached to tires of work vehicles such as dump trucks is not contaminated on public roads and the like.
As a general configuration of the vehicle tire removing apparatus, a configuration is adopted in which a vehicle tire is mounted on a pair of rollers, and the rollers are idled in a running state to drop mud by centrifugal force or frictional force. Many. When the roller is caused to idle by rotating the tire, the roller is caused to idle in the forward direction of the vehicle. The reason is that the rotational speed of the tire can be adjusted more freely in the forward direction of the vehicle than in the reverse direction.
[0003]
Therefore, when removing the vehicle tire using the above-described vehicle tire removing device, by moving the vehicle forward to enter the roller position of the removing device, and by rotating the tire forward and idle at the roller position. A mud removing process for removing mud, a retreating escape process for moving the vehicle backward once to escape from the roller position, and advancing beyond the roller position of the mud removing device without moving to the roller position by moving the vehicle forward. Will be performed according to the process before proceeding.
The following document is disclosed as an example of such a mud removing apparatus.
[0004]
[Patent Document 1] Utility Model Registration No. 3017820 "A device for removing mud attached to wheels"
[Patent Document 2] Utility Model Registration No. 3017969 "A device for removing mud attached to wheels"
[Patent Document 3] Utility Model Registration No. 3020074 "A device for removing mud attached to wheels"
[0005]
[Problems to be solved by the invention]
However, when trying to escape from the rollers in the retreat escape process,
▲ 1 ▼ Wear of tires ▲ 2 ▼ Wear of rollers with projections for removing mud ▲ 3 ▼ Moisture such as rain and washing water ▲ 4 質 Quality of mud ▲ 5 作業 Work vehicles such as dump trucks were loaded Depending on the conditions such as the presence or absence of a load and the weight of the load, the tire may slip on the roller and cannot escape.
[0006]
Conventionally, as a measure to prevent such a situation in which the tire cannot escape, various measures have been taken to prevent the tire from slipping on the roller by devising the roller shape and increasing the frictional force. Due to the wide variety of conditions described in (1) to (5), the vehicle cannot easily escape simply by devising the roller shape. For this reason, when it is not possible to escape from the sludge removing apparatus, the vehicle must be towed or the like, and it takes a lot of time and effort to escape the vehicle.
[0007]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle tire removing device capable of solving the above-mentioned problems.
An example of a specific purpose is as follows.
(A) Inexpensively prevent the vehicle from being hard to escape from the roller position in the vehicle tire removing device.
It should be noted that the problems of the invention other than those described above and the means for solving the problems will be described in detail in the description in the following specification.
[0008]
[Means for Solving the Problems]
The present invention will be described below with reference to, for example, FIGS. 1 to 6 showing an embodiment of the present invention.
The mud removing apparatus for a vehicle tire according to the first invention is a device for removing mud of a vehicle tire by arranging a plurality of pairs of rollers that are locked in a reverse rotation direction of the vehicle tire and are freely rotatable in a tire forward direction. Yes, the vehicle travels forward to enter the roller position of the sludge removing device, the roller moves forward to idle the tires to remove mud by idling, and the vehicle moves backward to escape from the roller position. In a vehicle tire de-mudging device that performs de-mudging by a retreating escape process to be performed and a pre-progression process in which the vehicle is moved forward to advance beyond the roller position of the de-mudging device without being fitted to the roller position,
The upper surface position of the forward roller of the pair of rollers on which the tire is mounted is set relatively higher than the upper surface position of the reverse roller.
[0009]
A mud removing device for a vehicle tire according to a second aspect of the present invention is a device for removing mud of a vehicle tire by arranging a plurality of pairs of rollers that are locked in a reverse rotation direction of the vehicle tire and that can freely rotate in a tire forward direction. Yes, the vehicle travels forward to enter the roller position of the sludge removing device, the roller moves forward to idle the tires to remove mud by idling, and the vehicle moves backward to escape from the roller position. In a vehicle tire de-mudging device that performs de-mudging by a retreating escape process to be performed and a pre-progression process in which the vehicle is moved forward to advance beyond the roller position of the de-mudging device without being fitted to the roller position,
The pair of rollers on which the tires are mounted are formed of rollers having the same diameter, and the rollers having the same diameter are set such that the axial position of the forward roller is higher than the axial position of the reverse roller. The upper surface position is set relatively higher than the upper surface position of the reverse roller.
[0010]
A mud removing device for a vehicle tire according to a third invention is a device for removing mud of a vehicle tire by arranging a plurality of pairs of rollers that are locked in the reverse rotation direction of the vehicle tire and that can freely rotate in the tire forward direction. Yes, the vehicle travels forward to enter the roller position of the sludge removing device, the roller moves forward to idle the tires to remove mud by idling, and the vehicle moves backward to escape from the roller position. In a vehicle tire de-mudging device that performs de-mudging by a retreating escape process to be performed and a pre-progression process in which the vehicle is moved forward to advance beyond the roller position of the de-mudging device without being fitted to the roller position,
The pair of rollers on which the tires are mounted are formed of rollers having different diameters, and the diameter of the forward roller is set to be larger than the diameter of the reverse roller, so that the upper surface position of the forward roller is relatively higher than the upper surface position of the reverse roller. It is characterized by having been raised.
[0011]
A fourth invention is the invention according to any one of the first invention to the third invention, in which, among the plurality of roller pairs, only a front wheel receiving roller pair corresponding to a front wheel tire of a vehicle is used as a forward roller. The upper surface position is relatively higher than the upper surface position of the reverse roller.
According to a fifth invention, in the invention according to any one of the first invention to the third invention, at least one pair of right and left rollers of the pair of rollers provided corresponding to the rear wheel tires of the vehicle includes a forward roller. Is relatively higher than the upper surface position of the reverse roller.
[0012]
According to a sixth aspect, in the invention according to any one of the first to fifth aspects, a difference between an upper surface position height of the forward roller and an upper surface position height of the reverse roller is set in a range of 10 mm to 50 mm. It is characterized by having.
[0013]
The first to sixth inventions will be described in more detail.
The plurality of roller pairs are provided corresponding to at least front wheel tires and rear wheel tires of the vehicle. For example, in the embodiments described below, a work vehicle having six vehicle tires will be described as an example. However, the present invention may be applied to a mud removing device having a roller pair corresponding to a work vehicle such as four wheels or eight wheels. Application is possible as well.
Further, the method and mechanism for locking the vehicle tire in the reverse rotation direction in the plurality of roller pairs are not particularly limited. It is sufficient that the roller pair can be substantially locked in the reverse rotation direction of the vehicle tire.
[0014]
In the fifth invention, “at least one pair of right and left roller pairs of a pair of rollers provided corresponding to the rear wheel tires of the vehicle” means, for example, a first pair of rear wheel receiving rollers, a second pair of rear wheel receiving rollers, ... A work vehicle having an n-th rear wheel receiving roller pair (n is a natural number of 1 or more) includes at least one pair of left and right n-th rear wheel receiving roller pairs.
In each of the above inventions, the movement for vertically moving the state in which the upper surface position of the forward roller is matched with the upper surface position of the reverse roller from the state in which the upper surface position of the forward roller is higher than the upper surface position of the reverse roller. It is also possible to provide means.
[0015]
In addition, a unit is provided which can slide off only the forward rollers of the pair of rollers corresponding to the left and right wheels of the vehicle from the base in a direction perpendicular to the vehicle traveling direction and detach from the base when necessary. It is also possible to replace the unit with a unit having a different height. Although the replacement of the unit is time-consuming, it is more efficient than the trouble of towing the work vehicle when the work vehicle cannot escape from the mud removing device. In addition, it is also possible to adopt a configuration in which a part of the roller pair in the sludge removing device is unitized, in which case, the ease of escape of the sludge removing device can be easily changed at the site, and depending on the situation at the site. There is an advantage that a quick response can be made accordingly.
[0016]
【The invention's effect】
According to the first aspect of the present invention, the weight of the tire is easily related to the reverse roller by setting the upper surface of the forward roller relatively higher than the upper surface of the reverse roller among the pair of rollers for mounting the tire. In addition, since the forward roller is high, the resistance when the tire retreats can be reduced, and the force for pushing the tire backward can be easily generated. Therefore, escape from the roller position in the backward escape process can be facilitated.
[0017]
According to the second aspect of the invention, the pair of rollers on which the tires are mounted are formed of rollers having the same diameter, and in the rollers having the same diameter, the axial position of the forward roller is set to a position higher than the axial position of the reverse roller. Thereby, the upper surface position of the forward roller can be relatively higher than the upper surface position of the reverse roller, so that the weight of the tire is easily related to the reverse roller and the tire is retracted due to the higher forward roller. The resistance at the time can be reduced, and the force for pushing backward can be easily generated. Therefore, escape from the roller position in the backward escape process can be facilitated.
According to the second aspect of the invention, without changing the roller diameter or the like used in the vehicle tire removing device, the roller used is provided with a bulky member such as a shim member for determining the axial position of the forward roller. It can be implemented simply by setting it to a high value, which is advantageous in that it can be easily implemented at low cost.
[0018]
According to the third aspect, the pair of rollers on which the tires are mounted are formed of rollers having different diameters, and the diameter of the forward roller is set to be larger than the diameter of the reverse roller, whereby the upper surface position of the forward roller is set to the reverse roller. Can be relatively higher than the upper surface position of the tire, the weight of the tire can be easily related to the backward roller, and the forward roller is high, so that the resistance when the tire retreats can be reduced, and the force for pushing backward is reduced. It can be easily created. Therefore, escape from the roller position in the backward escape process can be facilitated.
[0019]
Regarding the fourth invention, vehicles using a vehicle tire removing device are often work vehicles such as trucks, and many of such work vehicles are often driven by rear wheels. It can be said that the force to move backward from the position and escape is sufficient, but since the front wheel tire is driven, the force to move backward and escape from the roller position by the front wheel tire does not work. Even in such a case, according to the fourth aspect of the present invention, by making it easy to escape at the roller position corresponding to the front wheel tire, it is possible to prevent the entire vehicle from moving backward by fitting into the roller position at the front wheel tire. It can be suppressed effectively.
In addition, usually, the periphery of the pair of rollers on which the front wheel tires are mounted has fewer attached facilities and the like than the periphery of the pair of rollers on which the rear wheel tires are mounted, and it is easy to provide a step between the forward side roller and the reverse side roller. There are advantages.
[0020]
Also in the fifth invention, there are many work vehicles such as trucks that use the vehicle tire removing device, and many of such work vehicles are often driven by rear wheels. By setting the upper surface position of the forward-side roller relatively higher than the upper surface position of the reverse-side roller in at least one pair of rollers that receives the reverse tire in a place where there is a strong force to escape backward from the vehicle tire, Can easily escape from the roller position.
[0021]
Regarding the sixth invention, originally, in this type of vehicle tire removing apparatus, the weight of the vehicle tire is set so as to be evenly applied to the pair of rollers. If the length to be higher than the upper surface position exceeds 50 mm, the ratio of the weight of the vehicle tire related to the reverse roller to the forward roller becomes extremely large, and the failure of the roller pair increases. On the other hand, if the degree of making the upper surface position of the forward roller relatively higher than the upper surface position of the reverse roller is less than 10 mm, the effect of making the vehicle tire easily escape from the roller position in the reverse escape stroke is not sufficient. Therefore, it is preferable to set this range.
[0022]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a vehicle tire removing apparatus according to a first embodiment of the present invention, and FIG. 2 is a plan view thereof.
As shown in FIGS. 1 and 2, the vehicle tire removing apparatus 1 includes a base 3 through which a working vehicle 2 can enter and exit, and a plurality of rollers rotatably supported by the base 3. And 4 pairs.
The base 3 has an entry slope portion 5 for the work vehicle 2 to enter and a retreat slope portion 6 for the work vehicle 2 to exit. At the center of the base 3, there is provided a support 7 for rotatably supporting each roller 8, and the support 7 is provided on a raised floor such that the work vehicle 2 entered from the entry slope 5 is at a predetermined height position. It is structured as an expression.
[0023]
The roller pair 4 pivotally supported by the base 3 is constituted by two opposed cylindrical rollers 8 which can rotate in the forward rotation direction of the work vehicle 2, but can move backward in the vehicle. A lock mechanism 9 (see FIG. 2) that cannot rotate in the rotation direction and locks the roller 8 is connected. Therefore, in the mud removing apparatus 1 shown in FIGS. 1 and 2, since the work vehicle 2 is set so as to move from the left side to the right side in the drawing, each roller 8 is rotated counterclockwise by the lock mechanism 9. Although rotation corresponding to (see arrow 10 in FIG. 1) is possible, it is configured to be locked so that it cannot rotate clockwise. In this embodiment, the lock of the lock mechanism 9 is also transmitted to the front wheel receiving roller pair 23 by a chain mechanism (not shown) or the like.
[0024]
A plurality of roller pairs 4 are provided symmetrically with respect to the number of left and right wheels of the work vehicle 2. In the example shown in FIGS. 1 and 2, the working vehicle 2 is configured on the assumption that the front wheel tires 11 include two left and right tires, and the rear wheel tires include a total of four left and right front rear tires 12 and rear rear tires 13. Therefore, on the base 3, a total of six roller pairs 4 including the front wheel receiving roller pair 23, the first rear wheel receiving roller pair 24, and the second rear wheel receiving roller pair 25 are provided at each tire position of the work vehicle 2. It is provided correspondingly. Since each roller pair 4 has two rollers 8, the total number of rollers 8 is twelve. In this embodiment, only the front wheel receiving roller pair 23 has the upper surface position of the forward roller set relatively higher than the upper surface position of the reverse roller.
[0025]
FIG. 3 is a diagram showing a characteristic configuration of the present embodiment, and is a diagram in which a pair of front wheel receiving rollers is schematically enlarged.
The pair of rollers 8 on which the front wheel tires 11 are mounted are composed of rollers 8a and 8b having the same diameter, and the rollers 8a and 8b having the same diameter move the axial center position Oa of the roller 8a moving forward and the roller 8a moving backward. It is configured to be set at a position higher than the axis center position Ob. Specifically, in order to raise the position of the bearing member of the roller 8a on the advancing side, a bulky member 15 such as a shim member is sandwiched between the bearing member 19 and the mounting surface 20 of the support portion 7 of the base. The axial position Oa of the roller 8a is increased by a distance d. In the case of a mud removing apparatus assuming a tire diameter of a normal heavy-duty truck for work, the degree of heightening is about 10 mm to 50 mm, and preferably about 15 mm to 30 mm. In FIG. 3, the size of the distance d is drawn larger than the roller diameter for easy understanding.
[0026]
FIG. 7 is a conventional configuration diagram showing a case where the axial positions of two rollers are matched.
As shown in FIG. 7, if the height of the upper surface of the conventional roller is set to the same height, the weight related to the tire is equally applied to the forward roller 8a and the reverse roller 8b. However, when the upper surface position of the forward-side roller 8a is higher than the upper surface position of the reverse-side roller 8b as in the present embodiment shown in FIG. The inclination of the center line 16 is inclined toward the reverse roller 8b with respect to the vertical line 17. In this state, when the tire 11 is rotated in the counterclockwise direction in FIG. 3 so that the working vehicle is backed in the backward escape process, when the tire 11 rotates counterclockwise by the higher amount of the forward roller 8a. The force acting in the pushing direction increases, and the vehicle easily moves backward.
[0027]
FIG. 4 is a perspective view illustrating an example of a roller pair employed in the present embodiment.
The roller 8 has a configuration in which ridges 18 are provided at equal intervals on a cylindrical surface 21 of the roller 8 so as to extend parallel to the cylindrical axis. FIG. 4 shows a configuration in which the ridge 18 is made of, for example, a wire having a circular cross section, and a total of 12 wires are firmly fixed to the cylindrical surface 21 at intervals of 30 ° (degrees). The ridge 18 has a function of increasing friction on a contact surface with the tire.
[0028]
Further, by fixing a wire having a circular cross section to the cylindrical surface 21 as shown in FIG. 4, a frictional force for facilitating escape can be obtained in the backward escape process without damaging the tire surface.
[0029]
[Second embodiment]
FIG. 5 is a diagram for explaining the second embodiment of the present invention, and is a diagram corresponding to FIG.
The feature of the second embodiment is that the pair of rollers 8 on which the tires are mounted are composed of rollers 8a and 8b having different diameters, and the forward roller 8a is a roller having a larger diameter than the reverse roller 8b. The upper surface position of the forward roller 8a is relatively higher than the upper surface position of the reverse roller 8b, thereby facilitating escape from the roller arrangement position when the work vehicle is moved backward. Specifically, rollers 8a and 8b having different radii are employed, and the upper surface position of the forward roller 8a is higher than the upper surface position of the reverse roller 8b by the radius difference d. In this embodiment, it is not essential that the height positions of the axis positions Oa and Ob of the two rollers 8a and 8b are set to the same height position, and the height positions can be shifted up and down as appropriate.
Even in the second embodiment, it is possible to easily escape from the roller pair when moving backward.
[0030]
[Third embodiment]
6 (A) to 6 (C) are views for explaining the third embodiment of the present invention, and are views showing the arrangement of roller pairs in which the forward roller is raised in the base.
FIG. 6 (A) shows a configuration in which a pair of rollers in which the forward side roller 8a is raised as in the first embodiment is provided only on a pair of front wheel receiving rollers 23 on the left and right sides of the work vehicle as shown by oblique lines in FIG. FIG. 6 (B) shows a configuration in which a pair of rollers having raised forward rollers 8a is provided only in both the first rear wheel receiving roller pair 24 and the second rear wheel receiving roller pair 25, and FIG. 6 (C) shows a front wheel receiving roller. In this configuration, the pair 23 and the pair of rear wheel receiving rollers 24 and 25 are provided. In the configuration shown in FIG. 6C, all the roller pairs 4 have steps. When a step is provided in the rear wheel receiving roller pair 24, 25, a configuration in which only one of the first rear wheel receiving roller pair 24 and the second rear wheel receiving roller pair 25 is provided may be adopted.
[0031]
However, it is preferable that a pair of rollers having a higher forward roller be provided for each of the pair of rollers provided on the left and right in each of the front wheel receiving roller pair 23, the first rear wheel receiving roller pair 24, and the second rear wheel receiving roller pair 25. .
[Brief description of the drawings]
FIG. 1 is a front view of a vehicle tire removing device according to a first embodiment of the present invention.
FIG. 2 is a plan view of the vehicle tire removing apparatus according to the first embodiment of the present invention.
FIG. 3 is a schematic enlarged view of a pair of front wheel receiving rollers according to the first embodiment.
FIG. 4 is a perspective view showing an example of a roller employed in the present embodiment.
FIG. 5 is a diagram for explaining a second embodiment of the present invention, and is a diagram corresponding to FIG. 3;
FIGS. 6 (A) to 6 (C) are views for explaining a third embodiment of the present invention, and show arrangements of roller pairs in which a forward roller is raised in a base. is there.
FIG. 7 is a schematic enlarged view of a roller pair in a conventional mud remover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... De-dusting device of vehicle tire, 4 ... Roller pair, 8a ... Forward roller, 8b ... Reverse roller, 11 ... Front wheel tire, 12 ... 1st rear wheel tire, 13 ... 2nd rear wheel tire, 18 ... Thrust 23, a front wheel receiving roller pair, 24, a first rear wheel receiving roller pair, and 25, a second rear wheel receiving roller pair.

Claims (6)

A device that removes mud from vehicle tires by arranging a plurality of pairs of rollers that are locked in the reverse rotation direction of the vehicle tires and that can freely rotate in the tire forward direction in front and back. An approaching process of entering the roller position, a mud removing process of removing mud by rotating the tire forward and idling at the roller position, a retreating escape process of moving the vehicle backward to escape from the roller position, and moving the vehicle forward. In the vehicle tire removing device that removes the mud by means of a pre-progression process that advances beyond the roller position of the removing device without being fitted to the roller position,
An apparatus for removing tires from a vehicle tire, wherein an upper surface position of a forward roller among a pair of rollers on which a tire is mounted is set relatively higher than an upper surface position of a reverse roller. A device that removes mud from vehicle tires by arranging a plurality of pairs of rollers that are locked in the reverse rotation direction of the vehicle tires and that can freely rotate in the tire forward direction in front and back. An approaching process of entering the roller position, a mud removing process of removing mud by rotating the tire forward and idling at the roller position, a retreating escape process of moving the vehicle backward to escape from the roller position, and moving the vehicle forward. In the vehicle tire removing device that removes the mud by means of a pre-progression process that advances beyond the roller position of the removing device without being fitted to the roller position,
The pair of rollers on which the tires are mounted are formed of rollers having the same diameter, and the rollers having the same diameter are set such that the axial position of the forward roller is higher than the axial position of the reverse roller. A mud removing apparatus for a vehicle tire, wherein an upper surface position is set relatively higher than an upper surface position of a reverse roller. A device that removes mud from vehicle tires by arranging a plurality of pairs of rollers that are locked in the reverse rotation direction of the vehicle tires and that can freely rotate in the tire forward direction in front and back. An approaching process of entering the roller position, a mud removing process of removing mud by rotating the tire forward and idling at the roller position, a retreating escape process of moving the vehicle backward to escape from the roller position, and moving the vehicle forward. In the vehicle tire removing device that removes the mud by means of a pre-progression process that advances beyond the roller position of the removing device without being fitted to the roller position,
The pair of rollers on which the tires are mounted are formed of rollers having different diameters, and the diameter of the forward roller is set to be larger than the diameter of the reverse roller, so that the upper surface position of the forward roller is relatively higher than the upper surface position of the reverse roller. A mud removing device for vehicle tires, characterized in that the height is increased. The vehicle tire removing apparatus according to any one of claims 1 to 3, wherein, of the plurality of roller pairs, only a front wheel receiving roller pair corresponding to a front wheel tire of the vehicle is used as a forward roller. A mud removing apparatus for a vehicle tire, wherein an upper surface position is relatively higher than an upper surface position of a reverse roller. 4. The vehicle tire removing apparatus according to claim 1, wherein at least one pair of right and left rollers of a pair of rollers provided corresponding to a rear wheel tire of the vehicle includes a forward roller. 5. The mud removing device for a vehicle tire, wherein the upper surface position of the vehicle tire is relatively higher than the upper surface position of the reverse roller. In the vehicle tire removing apparatus according to any one of claims 1 to 5, a difference between an upper surface position height of the forward roller and an upper surface position height of the reverse roller is set in a range of 10 mm to 50 mm. The vehicle tire removal equipment.

Images