JP4348377B2 - All-dimension lane marking machine and front / rear bidirectional caster wheels - Google Patents

Description

The present invention relates to a caster wheel that can be applied to a wheel of a cart for transportation of a material such as a part material in a factory, a glass container that is fragile in a laboratory or a hospital, and a liquid that may be spilled, and a lane marking construction machine including the caster wheel About. In particular, the present invention relates to a lane marking construction machine that can handle a plurality of lane markings having different widths.

Conventionally, as a machine for constructing a lane line on a road, a hand-drawn or hand-drawn lane line construction machine has been used. There are a plurality of types of lane markings having different widths such as 15 cm width, 20 cm width, 30 cm width, and 45 cm width, and individual construction machines are used according to the width. For example, as shown in FIGS. 5 and 6, a hand-held construction machine for lane marking construction having a relatively small width has a slit 20 for drawing a lane marking on the right side of the front wheel shaft on which the molten material container is mounted. It has a structure located outside the wheel, and is used by moving in the forward direction (the direction in the figure) (for example, Patent Document 1).

  Such a type of construction machine can deal with 15 cm or 20 cm wide marking lines, but cannot cope with, for example, a 45 cm wide slit in terms of weight balance. Therefore, as shown in FIGS. 7 and 8, the construction machine for a relatively wide lane line includes a bead container that also serves as a bead spreader and a molten material container that also serves as a slit at the center of the left and right wheels. This is a hand-drawn type. In the manual work using this construction machine, it is necessary to pull the construction machine while retreating backwards, and the worker is forced to move unnaturally.

  Construction of a lane line is an operation performed while restricting traffic on the road. After finishing the place, it is necessary to move to the next and repeat this operation from several places to 10 places a day. Therefore, in order to avoid traffic congestion, it is necessary to shorten the work time and shorten the traffic regulation time. In addition, it is better that the number of equipment and the number of vehicles that carry these are small, and even the same number of vehicles should be as small as possible.

  Regarding the construction machines, the construction machines for 30 cm width and 45 cm width (FIG. 7) structurally have a small supply capacity of the molten material, and the frequency of supplying the molten material during the work is high, which causes the work time to be extended. .

In addition, the 45cm wide lane markings are mainly installed in the pedestrian crossing and the zebra zone in the center of the road, and the construction length is a comparatively short line of about 4 m. During construction, it is necessary to repeat the forward and backward movement of the construction machine. In general, caster wheels are used to facilitate the turning of carts, etc., but when ordinary caster wheels are used as wheels for lane marking construction machines, the wheels turn 180 degrees for each forward and backward operation degree, You will shake the machine from side to side.
In addition, the caster which improved the operativity of direction change is proposed by patent document 2, patent document 3, etc. As shown in FIG.

JP 2003-293313 A JP 2005-319926 A Japanese Patent Laid-Open No. 2005-271753

  The present invention provides a caster wheel capable of automatically responding in both the front and rear directions, and by using such a caster wheel, the machine body can be used for moving the construction machine and repeating forward and backward movements for setting the construction position. Providing a hand-operated lane marking construction machine that can handle all standard lane markings without any side-to-side movement, thereby eliminating the above-mentioned unnatural work behavior due to manual construction. The purpose is to solve problems such as construction time and traffic congestion by improving the efficiency of the entire work.

Caster wheels of the present invention for solving the above-mentioned problems, an outer fork, said has an inner fork swingably supported relative to the outer fork, and a wheel which is pivotally supported on the inner fork, and the inner fork A stopper that abuts on the wheel and a spring that supports the stopper are provided between the wheel and the wheel.

  Specifically, a caster wheel including a tire, an outer fork having an inner fork and a guide protrusion, a stopper, and a spring supporting the stopper, the stopper when changing from forward to backward or vice versa. Is a front-rear bidirectional caster wheel that locks the tire, integrates with the inner fork, rolls along the guide protrusion on the lower surface of the outer fork, and can automatically displace in the front-rear direction without turning 180 degrees.

  Moreover, the lane marking construction machine of the present invention uses the above-described front and rear bidirectional caster wheels of the present invention.

The lane marking construction machine according to the present invention includes, for example, a front and rear bidirectional caster wheel that can be automatically displaced in both the front and rear directions without turning, and moves the right front wheel forward and a molten material behind the front and rear wheels. It is comprised so that a slit can be located to the bottom of a container. This makes it possible to install slits on wide 45cm and 30cm wide lane markings that have been supported by individual hand-drawn construction machines so far, and can be applied to lane markings of all current standard widths. A lane marking construction machine for all dimensions is provided.

When the caster wheel of the present invention changes from forward to reverse or vice versa, the stopper locks the tire, integrates with the inner fork, rolls along the guide protrusion on the lower surface of the outer fork, and automatically advances or retracts. It can be switched to support. The caster wheel of the present invention can be used as a wheel of a carriage, and can advance / retreat smoothly without turning, improving operability.

  Moreover, the lane marking construction machine according to the present invention can move the right front wheel forward so that the slit can be positioned under the molten material container behind the wheel, and the slit of 15 cm to 45 cm width can be attached. .

  By using a lane marking construction machine that can handle all dimensions, only one construction machine has been required in the past, eliminating the time spent loading and unloading equipment at each site, and loading space for work vehicles. It is possible to reduce the number of construction vehicles or reduce the size of the vehicle by effectively using. Further, since the capacity of the molten material container is large, the frequency of supplying the molten material during the operation is low, and the work efficiency is improved.

  In particular, construction at large-scale scrambled intersections has a large effect on efficiency, and the effect of avoiding traffic congestion due to construction is great by speeding up the release of traffic regulations.

Hereinafter, embodiments of a lane marking construction machine and caster wheels according to the present invention will be described.
FIG. 1 is a side view showing an embodiment of a lane marking construction machine according to the present invention, and FIG. 2 is a plan view of main equipment arranged at the lower part of the lane marking construction machine in FIG.

  As shown in the drawing, the lane marking construction machine of the present embodiment includes a bead container 1, a bead spreader 5 connected to the bead container 1, P. G. It consists of a container 2, a melting material container 3, a slit 6 connected to the melting material container 3, and wheels 4, 7 and 8.

  Of the wheels 4, 7 and 8, when the moving direction of the aircraft is the front-rear direction, the wheel 4 is a rear wheel, the wheels 7 and 8 are a right front wheel and a left front wheel, respectively, and the rear wheel 4 and the right front wheel 7 are described later. This is a front / rear bidirectional caster wheel, and can be automatically adapted to both front / rear directions.

  Further, the right front wheel 7 is positioned in front of the conventional left and right front wheel shafts, and a slit 6 is attached directly beside the left front wheel 8. As described above, the right front wheel 7 is moved forward relative to the left front wheel 8 so that the slit 6 can be easily set. Moreover, since the slit 6 can be positioned under the molten material container 3, in addition to the conventional 15 cm and 20 cm wide slits, it is possible to attach wide 30 cm and 45 cm slits 6 which were impossible until now. can do. That is, the construction machine of the present lane line full width size is enabled with this construction machine.

  As the right front wheel 7 is moved forward from the left front wheel shaft, the left and right front wheel shafts become uneven, and the aircraft cannot turn and the forward and backward operations cannot be performed smoothly.

  As a solution, turning is possible by using caster wheels for the right front and rear wheels. However, in order to position the construction machine on the construction line marked on the road surface with an accuracy of 1 mm or less, the construction machine is positioned by repeating the forward and backward movement of the construction machine, but each time the caster wheel turns 180 degrees. This will cause the machine to swing left and right, making it impossible to set the work position.

  In this embodiment, the problem is solved by using the front and rear bidirectional caster wheels 4 and 7 of the present invention as the wheels 4 and 7.

  The details of the front and rear bidirectional caster wheels according to the present invention will be described below with reference to FIGS. 3 in FIG. 3 is a front view of the caster wheel, 10 and 11 are views showing different states, and FIG. 4 is a side view of the caster wheel.

  As shown in FIGS. 3 and 4, the caster wheel includes an outer fork 12 having an inner fork 13 and a guide protrusion 14, a stopper 16, and a spring 15 that supports the outer fork 12. The movement of the airframe changes from forward to backward. At the time or vice versa, the stopper 16 locks the tire 17 and is integrated with the inner fork 14 and rolls along the guide protrusion 14 on the lower surface of the outer fork 12 so that the caster automatically turns both forward and backward without turning 180 degrees. Can be displaced.

  Specifically, the tire 17 is pivotally supported by the inner fork 13, and the inner fork 13 is swingably supported by the outer fork 12. A shape that engages with the guide protrusion 14 of the outer fork 12 is formed at the end of the inner fork 13, and the inner fork 13 rolls along the guide protrusion 14 to position the tire 17 with respect to the outer fork 12. Can be changed. One end of a spring 15 is fixed to the end of the inner fork 13, and a stopper 16 is fixed to the other end of the spring 15. The tip of the stopper 16 is in contact with the tire 17. The abutting position is a position that is slightly lower than the highest position in the vertical direction of the tire as shown in the figure, and the portion of the tire 17 that abuts against the stopper 16 is directed to a position lower than that position (for example, an arrow in FIG. 4). When rotating (in the direction 19), the stopper 16 does not function as a stopper, but when the portion of the tire 17 in contact with the stopper 16 rotates toward a position higher than that position, the stopper 16 functions as a tire. 17 and integrated.

  The operation in such a configuration will be described. First, when the aircraft moves forward and moves in the direction of arrow 18 in FIG. 4, the tire 17 rotates in the direction of arrow 19, and the stopper plate 16 hangs from the tip of the spring plate 15 and contacts the tire 17. In this case, the lock function does not work. Therefore, the forward movement is not hindered. On the other hand, when the machine moves in the opposite direction of the arrow 18, the tire 17 moves in the opposite direction of the arrow 19, and the stopper plate 16 bites into the tire 17, locks it and integrates with the inner fork 13, The inner fork 13 starts rolling on the lower surface of the outer fork 12 along the guide projection 14 and is automatically displaced from the position indicated by 10 in FIG. 3 to the position indicated by 11 in FIG. At this time, the tire does not turn.

  On the contrary, the stopper plate 16 and the spring plate 15 function and are repeated. That is, in the state of 11 in FIG. 3, the stopper plate 16 is in contact with the tire 17, but the lock function does not work, and the movement of the airframe in the direction opposite to the arrow 18 can be retreated without being hindered.

  When the position of the wheel is displaced from 10 in FIG. 3 to 11 in FIG. 3 and vice versa, there is no change in the vertical direction of the machine, that is, there is no change in potential energy. No.

  As described above, the lane marking construction machine according to the present invention swings the machine to the left and right by providing the front right and rear wheels and the front and rear bidirectional caster wheels that can be automatically displaced in both the front and rear directions without turning. Therefore, the forward and backward movement of the machine body can be easily performed, so that the work for positioning the construction machine on the construction drawing line marked on the road surface can be easily performed with high accuracy.

In addition, the front and rear bidirectional caster wheels of the right front wheel 7 can be replaced with ordinary wheels, and can be used exclusively for conventional 15 cm and 20 cm widths by returning to the original position on the left front wheel 8 axis.

  The forward and backward bidirectional caster wheels according to the present invention can be automatically displaced to the retracted position or the reverse position without turning of the caster when retreating from the advance position or vice versa.

The front and rear bi-directional caster wheels of the present invention are heavy on the caster cart as well as the lane marking construction machine, for example, parts materials in the factory, or glass containers that are fragile in laboratories and hospitals. Suitable for transporting certain liquids.
Also, when you pull out one of the caster carts side by side, there is no turning of the caster, so you can pull it out smoothly without hitting the next caster cart.

The side view which shows one Embodiment of the lane marking construction machine of this invention Plan view of main equipment arranged at the bottom of Fig. 1 The figure explaining the function of the front and rear bidirectional caster wheels Enlarged view of front and rear bidirectional caster wheels Side view of a conventional hand-held construction machine Plan view of the hand-held construction machine in FIG. Side view of a conventional manual construction machine Plan view of the manual construction machine in FIG.

1 Bead container 2 P. G container 3 Molten material container 4 Front and rear bidirectional caster rear wheel 5 Bead spreader 6 45 cm slit 7 Front and rear bidirectional caster right front wheel 8 Left front wheel 9 Front and rear bidirectional caster wheel front view 10 Front and rear bidirectional caster wheel forward position side view 11 Front and rear bidirectional caster wheel backward Position side view 12 Outer fork 13 Inner fork

Claims (6)

  A caster wheel having a tire, an outer fork having an inner fork and a guide protrusion, a stopper and a spring supporting the stopper, and when the vehicle changes from advancing to reversing or vice versa, the stopper stops the tire. A front-rear bidirectional caster wheel that locks, is integrated with the inner fork, rolls along a guide protrusion on the lower surface of the outer fork, and can be automatically displaced in both front-rear directions without turning 180 degrees. An outer fork, an inner fork supported to be swingable relative to the outer fork, and a wheel pivotally supported by the inner fork,
A front-rear bidirectional caster wheel comprising a stopper that contacts the wheel and a spring that supports the stopper between the inner fork and the wheel. The caster wheel according to claim 2,
The caster wheel according to claim 1, wherein the outer fork includes means for guiding the swing of the inner fork.   A cart comprising the caster wheel according to any one of claims 1 to 3. A molten material container, a slit connected to the molten material container and applying the molten material to a road surface, an airframe that supports the molten material container, and one or more wheels before and after the moving direction of the airframe. A lane marking machine,
A lane marking construction machine comprising the caster wheel according to any one of claims 1 to 3 in at least one of the wheels. The lane marking construction machine according to claim 5,
The wheel includes a rear wheel, a left front wheel, and a right front wheel,
A lane marking construction machine comprising the caster wheel according to any one of claims 1 to 3 on the rear wheel and the right front wheel.

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