JPH044017Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the sign trailer.
This invention relates to a sign trailer used to notify traveling vehicles of diagonal line changes, etc. when performing road construction.

When repair work or the like is carried out on a shared road, it is often impossible to divert passing vehicles to another road.

Even if there is a detour road, if the traffic capacity of that road is insufficient, it may cause new confusion.

Therefore, when construction work is carried out on a shared road, traffic is restricted in one lane, and construction is carried out in the restricted lane while allowing vehicles to pass in other lanes.

The form of traffic regulation varies depending on the work content, site conditions, etc. For example, when carrying out construction work at multiple locations while moving for a very short time at one location, a marked vehicle 3 is parked behind a work location 2 on a road 1, as shown in Figure 1. The construction work is carried out by enclosing a section corresponding to the width of one lane with a safety cone 4 and forcing vehicles 5 in the construction lane to change lanes to other lanes.

When cleaning the road surface using a sweeper or the like, as shown in Fig. 2, a group of work vehicles 6 made up of water sprinklers, sweepers, trucks, etc. is followed by a marker vehicle 3 at a certain distance. Cleaning is carried out while driving at low speed and passing general vehicles.

As shown in Fig. 3, the marked vehicle 3 used in such a case has a marking device such as an internally illuminated sign 7 on the loading platform that displays characters such as "under construction" or figures indicating the direction of lane change. In preparation, the system notifies passing vehicles that the road they are traveling on is under construction and the direction in which they should change lanes.

In addition, in preparation for the danger of a passing vehicle accidentally colliding with a marked vehicle, a cushion 8 is attached to the rear end of the loading platform to reduce the impact. At the same time, the marker vehicle 3 itself acts as a barrier, preventing passing vehicles 5 from driving into the work area 2 or colliding with the work vehicle 6, thereby protecting the safety of workers.

However, despite construction being carried out under these regulations, there are many accidents in which passing vehicles collide with marked vehicles due to distracted driving, drowsy driving, drunk driving, etc.

In particular, when a large vehicle rear-ends, the energy of the collision cannot be absorbed by the marked vehicle, and the marked vehicle or rear-ending vehicle drives into the work area or rear-ends the work vehicle, causing damage to workers and drivers. There is no end to accidents that result in death or injury.

Therefore, the purpose of this invention is to solve the above-mentioned problems that conventional marked vehicles have, and to create a marked trailer that can ensure the safety of workers and drivers even in the event of a collision with a passing vehicle. It is about providing.

In order to achieve the above object, the marked trailer according to the present invention is a marked trailer that is towed by a towing vehicle and is provided with a mark, wherein the marked trailer supports a body frame, a marked stand, and the marked stand, and supports the marked trailer. The trailer vehicle includes a frame that is slidable forward and backward relative to the trailer body frame, and a cushion member is arranged between the vehicle body frame and the frame to form a shock absorbing device.

Hereinafter, one embodiment of the sign trailer according to the present invention will be described with reference to FIGS. 4 to 14.

First, the overall structure of the traffic control method using a marked trailer according to the present invention will be explained.

The marking trailer 9 is an unmanned vehicle and includes a shock absorbing device 10 and a marking device 7.

The vehicle arrives at the construction site being towed by a conventional marking vehicle 3, and stops behind the work site coupled to the conventional marking vehicle 3, as shown in FIGS. 4 and 5.

In the case of a rear-end collision with a running vehicle, the collision energy of the rear-end vehicle is primarily absorbed by the impact absorption device 10 of the sign trailer 9.

When the marked trailer 9 alone cannot absorb the collision energy, such as in the case of a rear-end collision with a large vehicle, the marked trailer 9 is pushed forward and collides with the marked vehicle 3, but the marked vehicle 3 equipped with the cushion 8 absorbs the remaining energy. Absorb energy. In the case of continuous moving work such as road surface cleaning using a sweeper, a marking trailer follows the work vehicle and is towed by a marking vehicle, and operates in the same way as when the vehicle is stationary.

Therefore, the safety of workers and drivers can be sufficiently ensured. In addition, as shown in Figs. 6 and 7, by stopping the marked trailer 9 behind the marked vehicle 3 at a distance of Xm, it is possible to notify traveling vehicles of "under construction", "lane change", etc. at an early stage. be able to. Even in the event of a rear-end collision, the collision energy is primarily absorbed by the marked trailer 9, so that the remaining energy can be consumed while the marked trailer 9 is pushed out and moves over the distance Xm. In addition, a driver who is inattentive due to falling asleep can be woken up by a collision with the energy absorber of the marked trailer, which prevents a collision with the marked person, allowing the worker to continue working completely safely. can do.

Next, a shock absorbing device for such a marked trailer will be explained.

FIG. 8 is a side view showing the entire sign trailer 9 when it is stopped. The vehicle is connected to a marked vehicle (not shown) and towed by the vehicle.

FIG. 9 is a plan view of the chassis frame 11.
As shown in FIG. 10, a cushion drum slide frame 15 is integrally fixed to the upper surface of the chassis frame 11 with a coupler 16. The cushion slide frame 15 is a steel pipe with a rectangular cross-sectional shape, and a cushion drum sandwiching slide frame 17 is slidably inserted at its front end.

Cushion drum sandwiching slide frame 1
7, a rubber bumper 18 is fixed to the rear end surface.

FIG. 11 is a plan view showing a normal state in which the front end of the cushion drum sandwiching slide frame 17 is fitted into the rear end of the cushion drum slide frame 15.

A slide plate 19 is fixed to the upper surface of the cushion drum slide frame 15 in the front-rear direction.
A horizontally elongated hole 20 is provided in the side surface of this slide plate 19.

In addition, the cushion drum slide frame 15
and cushion drum sandwiching slide frame 1
On the upper surface of the marker 7, there is provided a marker pedestal 21 having a right triangular side cross-sectional shape as shown in FIG.
The lower part of the sign mount 21 is fixed to the slide frame 17 by inserting the cushion drum into the bottom surface 21a of the right angle part with bolts 22, and the bottom surface 21a of the right angle part
Since the bolt 23 provided at b can slide back and forth within the elongated hole 20 of the slide plate, the pedestal 21 can slide in the back and forth direction integrally with the cushion drum-inserting slide frame 17.

The bolts 23 prevent the pedestal 21 from moving up and down, and prevent the cushion drum sandwiching slide frame 17 and the pedestal 21 from coming off rearward through the slide plate elongated holes 20.

Further, a cushion drum receiving bracket 24 is provided at the rear end of the chassis frame 11, and a drum receiving plate 25 is protruded from the upper part of the cushion drum receiving bracket 24.

A plurality of cushion drums 26 are sandwiched between the drum receiving plate 25 and the rear surface 21c of the pedestal, and placed on the bracket 24.

The cushion drum 26 is made of an elastic material such as plastic and has a cylindrical or cylindrical shape, and as shown in FIG. It is being said.

Therefore, when a traveling vehicle rear-ends a marked trailer, the colliding vehicle presses the cushion drum-inserting slide frame 17 forward while in contact with the rubber bumper 18, so that this frame 17 is inserted into the cushion drum slide frame 15. Slide forward.

At this time, the marker stand 21 fixed to the frame 17 also slides forward at the same time, pressing the cushion drum 26 between it and the drum receiving plate 25. The water in the drum 26 is ejected upwards due to the lateral pressure, and the drum 26 deforms while absorbing the impact energy due to the buffering effect of the built-in air pack, absorbing the impact force until it breaks, reaching the state shown in Figure 14. reach.

As is clear from the above description, according to the present invention, an unmanned sign trailer is provided with a sign stand that is slidable in the front and rear directions, and a cushion drum that applies an impact between the stand and the drum receiving plate. Therefore, this trailer can absorb most of the impact of a rear-end collision.

Even if the impact energy is so great that it cannot be absorbed by the trailer, the remaining small amount of energy is absorbed by the cushion drum of the marked car in front, so the impact on the marked car is extremely small.

Therefore, the safety of workers and drivers engaged in shared road construction can be sufficiently ensured.

In addition, by placing the sign trailer at a distance behind the signer, it is possible to improve driver visibility and reduce the impact on the person marking the signer, which helps prevent accidents and improve work safety. can be improved.

[Brief explanation of drawings]

FIGS. 1 and 2 are explanatory diagrams of examples of traffic regulation using conventional marked vehicles. FIG. 3 is a side view A and a rear view B of the marked vehicle. 4 to 7 are explanatory diagrams of traffic regulation using the marked trailer according to the present invention. Figure 8 is a side view of the marked trailer;
Fig. 9 is a plan view of the chassis frame, Fig. 10 is an explanatory diagram showing the main parts of the shock absorbing device, Fig. 11 is a plan view of each slide frame, Fig. 12 is a perspective view of the sign frame, and Fig. 13 is an explanatory diagram showing the main parts of the shock absorbing device. FIG. 14 is an explanatory view of the cushion drum, and is an explanatory view showing the main parts of the shock absorbing device in a state where the cushion drum has been rear-ended by a running vehicle. 3... Sign car, 3a... Electric wire, 5... Running car,
9... Sign trailer, 15... Cushion drum slide frame, 17... Cushion drum inserting slide frame, 18... Rubber bumper, 19... Slide plate, 20... Long hole, 21...
... Sign mount, 25 ... Drum receiving plate, 26 ... Cushion drum, 30 ... Inertia brake, 31 ...
Parking brake lever, 32...Emergency communication chain, 33...Electric socket.

Claims (1)

[Claims for Utility Model Registration] In a sign trailer in which a sign is attached to a trailer towed by a towing vehicle, the sign trailer supports a body frame, a sign mount, and the sign mount, and extends forward and backward relative to the trailer body frame. What is claimed is: 1. A sign trailer comprising: a frame capable of sliding; and a cushion member disposed between the vehicle body frame and the frame to serve as a shock absorbing device.