JP2022164475A - Tire house opening mechanism for rear wheel of low floor type trailer - Google Patents

Abstract

To provide a tire house opening mechanism for a rear wheel of a low floor type trailer constituted so that a heavy body, such as a large-sized vehicle or a construction machine, can be smoothly loaded to be compact to a shorter height.SOLUTION: There is provided a tire house opening mechanism for a rear wheel of a low floor type trailer characterized in that a tire house for the rear wheel is pivoted on a trailer part rear part of the low floor type trailer; and when a cargo is loaded on the trailer, the tire house is rotated horizontally by 90° at a rotary shaft part to open the trailer part rear part, and thus a step of the trailer part rear part is eliminated to make it easy to load the cargo.SELECTED DRAWING: Figure 2

Description

The present invention relates to a tire house opening mechanism for the rear wheels of a low-floor trailer which has a low-floor loading platform and is capable of loading and transporting a heavy object such as a large vehicle with a high vehicle height from the rear of the low-floor trailer without difficulty. It is a thing.

The following various mechanisms are used to transport heavy objects such as large vehicles and construction machinery by trailer.
1) Sliding type: As shown in Fig. 2, a sliding type extension member is attached to the rear part of the loading platform and extended so as to tilt backward toward the ground.
2) Rotating rear gate type: A type in which the rear gate at the rear of the loading platform is rotated backward and tilted toward the ground.
3) Dump type: A jack installed near or behind the driver's seat of the truck lifts the driver's seat side using the rear wheel as a fulcrum to tilt the cargo bed, making it easier to load and unload from the rear of the cargo bed.
As such a dump type, Japanese Unexamined Patent Publication No. 7-117552 (see Patent Document 1), Japanese Utility Model Laid-Open Publication No. 55-161629 (see Patent Document 2), Japanese Utility Model Laid-Open Patent Publication No. 58-124339 (see Patent Document 3) ) and Japanese Utility Model Laid-Open No. 59-51638 (see Patent Document 4).
4) Low-floor type: The loading platform in front of and behind the tire house of the rear wheel of the trailer is configured to be one step lower, so that tall and heavy objects can be loaded without difficulty.
As such a low floor type, Japanese Utility Model Laid-Open No. 62-92960 (see Patent Document 5) can be cited.

JP-A-7-117552 Japanese Utility Model Laid-Open No. 55-161629 Japanese Utility Model Laid-Open No. 58-124339 Japanese Utility Model Laid-Open No. 59-51638 Japanese Utility Model Laid-Open No. 62-92960

However, in the above prior arts 1) to 4), the rear part of the loading platform is tilted to smoothly load heavy objects including large vehicles and construction machines on the truck, and large vehicles with a low floor and a high vehicle height are used. There has been no vehicle that satisfies the two challenges of making it possible to compactly load a heavy object such as a construction machine.

Therefore, the present invention solves such problems of the conventional example, and provides a low-floor trailer that can smoothly load heavy objects such as large vehicles and construction machines and that can be compactly loaded by suppressing the height. An object of the present invention is to provide a tire house opening mechanism for rear wheels of a floor type trailer.

That is, in the tire house opening mechanism for the rear wheels of the low-floor trailer of the present invention, the tire house of the rear wheels is axially attached to the rear portion of the trailer portion of the low-floor trailer by a rotating shaft, and cargo is loaded on the trailer. In practice, the tire house is horizontally rotated by 90° on the rotating shaft portion, the rear portion of the trailer portion is opened, and the step at the rear portion of the trailer portion is eliminated to facilitate loading of the cargo.

Further, in the tire housing opening mechanism for the rear wheels of the low-floor type trailer of the present invention, the rear portion of the trailer portion is opened, and means for facilitating loading of cargo by eliminating the step at the rear portion of the trailer portion is attached to the rear portion of the trailer portion. It is also characterized by being an inclined plate.

Further, in the tire housing opening mechanism for the rear wheels of the low-floor trailer of the present invention, the mechanism for rotating the tire housing of the rear wheels by 90° in the horizontal direction is operated based on an operating mechanism based on a hydraulic cylinder, chain mechanism, or gear mechanism. It is also characterized by being a mechanism.

In the tire house opening mechanism for the rear wheels of the low-floor trailer of the present invention, an auxiliary tire is installed at the bottom of the tire house of the rear wheels of the low-floor trailer, and the tire housing is installed in the tire house of the rear wheels. It is also characterized by lifting the rear wheels by appropriate means and lowering the auxiliary tires to touch the ground so that the tire house of the rear wheels can be rotated 90 degrees very smoothly. and

2. In the tire house opening mechanism for the rear wheels of the low-floor trailer according to claim 1, when loading heavy objects including large vehicles and construction machines, the tire house is horizontally rotated by 90 degrees on the rotating shaft portion, In addition to opening the rear part of the trailer part, the steps in the rear part of the trailer part are eliminated to make it easier to load cargo.
Therefore, according to the tire housing opening mechanism for the rear wheels of the low-floor type trailer of claim 1, the rear part of the trailer can be opened to smoothly load heavy objects including large vehicles and construction machines on the truck, and the low-floor type can be used. It is now possible to compactly load heavy objects such as large vehicles with height and construction machinery.

In the tire housing opening mechanism for the rear wheels of the low-floor type trailer according to claim 2, the rear part of the trailer part is opened, and the step at the rear part of the trailer part is eliminated to make it easier to load the cargo. Therefore, when loading heavy objects including large vehicles and construction machines, it is possible to pass through the tire house without difficulty by eliminating the step.

In the tire housing opening mechanism for the rear wheels of the low-floor trailer according to claim 3, the mechanism for rotating the tire housing of the rear wheels by 90° in the horizontal direction is an operating mechanism based on a hydraulic cylinder or an air suspension. It has become possible to provide a simple and durable operating mechanism.

In the tire housing opening mechanism for the rear wheels of the low-floor trailer according to claim 4, an auxiliary tire is installed at the bottom of the tire housing for the rear wheels of the low-floor trailer, and the tire housing for the rear wheels is equipped with an auxiliary tire. By lifting the rear wheel by an appropriate means and then lowering the auxiliary tire to touch the ground, the tire house of the rear wheel can be rotated 90 degrees very smoothly.

1 is a schematic side view showing an embodiment of a tire house opening mechanism for rear wheels of a low-floor trailer of the present invention; FIG. Fig. 2 is a schematic perspective view of the low-floor trailer in a state where the tire houses of the rear wheels are opened; It is a schematic see-through perspective view of the main part. It is the schematic perspective view seen from the other side. It is a schematic perspective view which shows the state which attached the inclined plate. FIG. 4 is a schematic plan view showing a tire house opening mechanism for the rear wheels of the low-floor trailer of the present invention; It is a schematic see-through plan view of the main part. Fig. 10 is a schematic plan view showing a state in which the tire housing opening mechanism for the rear wheels of the low-floor trailer of the present invention is operated to rotate the tire housing for the rear wheels by 90°; Next, it is a schematic plan view which shows the state which attached the inclined plate. FIG. 4 is a schematic plan view showing a state in which cargo is loaded on the trailer portion via an inclined plate; It is a schematic plan view showing a state in which the inclined plate is removed, the tire house of the rear wheel is rotated by 90°, and the original position is also returned. FIG. 4 is a schematic plan view showing a state in which the tire house of the rear wheel is rotated by 90° and returned to its original position;

An embodiment of the present invention will now be described in detail with reference to FIGS. 1 to 12. FIG.
In FIG. 1, reference numeral 11 denotes a semi-trailer type low-floor trailer in which wheels 13b are further attached to the rear of the wheels 13a of the driver's seat 12. As shown in FIG.
As shown in FIGS. 2 and 4, a tire house 15 for a rear wheel 13c at the rear portion of the trailer portion 14 with a lowered floor surface is axially attached to the low floor trailer 11 by a rotating shaft 16. When loading a cargo, the tire housing 15 is rotated horizontally by 90 degrees at the rotating shaft 16 to open the rear portion of the trailer portion 14 and eliminate the step at the rear portion of the trailer portion 14 to facilitate loading of the cargo. be.

Then, as shown in FIG. 5, the rear portion of the trailer portion 14 is opened, and an inclined plate 21 is connected to the rear portion of the trailer portion 14 in order to eliminate the step at the rear portion of the trailer portion 14 and facilitate loading of the cargo. Therefore, when a heavy object including large vehicles and construction machines is loaded, it is possible to pass through the tire housing 15 without any difficulty.

The tire housing opening mechanism for the rear wheels 13c of the low-floor trailer 11 is provided with a mechanism for horizontally rotating the tire housing 15 of the rear wheels 13c by 90 degrees. , an operating mechanism based on a gear mechanism is adopted, and it has become possible to provide an operating mechanism that is simple in structure and rich in durability.

The mechanism for rotating the tire house 15 of the rear wheel 13c by 90° in the horizontal direction will be described in detail. A rotating piece 41 is attached to the , and the arm 32 of the hydraulic cylinder 31 is connected to the shaft pin 42 of the rotating piece 41 . Therefore, when the rotary piece 41 is pushed by the hydraulic cylinder 31, the tire house 15 of the rear wheel 13c is separated from the trailer portion 14 and opened to 90 degrees.
In the figure, 43 is a flat pin attached to the other side of the rear portion of the low-floor trailer 11, and when the tire house 15 rotates in the opposite direction by 90° and returns to the original position, the low-floor trailer A retaining mechanism 44 for gripping a flat pin 43 arranged at the other connecting portion of the trailer 11 is attached to the end of the tire house 15 of the rear wheel 13c opposite to the rotary shaft 16. As shown in FIG. Therefore, the tire house 15 of the rear wheel 13c is operated by the hydraulic cylinder 31 and is opened until it is separated from the trailer portion 14 and becomes 90 degrees.
On the other hand, when loading or unloading of cargo on the low-floor trailer 11 is completed, the tire house 15 of the rear wheel 13c is operated by the hydraulic cylinder 31 to rotate 90 degrees so as to contact the trailer portion 14. As shown in FIG.
Of course, when the tire house 15 of the rear wheel 13c is rotationally driven, it can be driven not only by the hydraulic cylinder 31 but also by an operating mechanism based on a chain mechanism or a gear mechanism.

6 to 12 show the procedure for loading cargo onto the low-floor trailer 11 by operating the tire house 15 opening mechanism of the rear wheel 13c.
In the figure, 45 is an auxiliary tire installed on the bottom of the tire house 15 of the rear wheel 13c.
First, as shown in FIGS. 6 and 7, the low-floor trailer 11 before cargo is loaded has the tire house 15 of the rear wheel 13c held at the rear portion of the trailer portion 14 via the flat pin 43. ing.

When cargo is to be loaded on the trailer portion, as shown in FIG. 8, the retaining mechanism 44 (not shown in FIG. 8) is operated to release the engagement with the flat pin 43. At the same time, the hydraulic cylinder 31 is operated to rotate the rotating piece 41 by 90°. At this time, since the rotating piece 41 is connected to the tire house 15 of the rear wheel 13c, the tire house 15 of the rear wheel 13c rotates by 90° as the rotating piece 41 rotates.
At this time, the rear wheel 13c in the tire house 15 of the rear wheel 13c is lifted by an appropriate means, and the auxiliary tire 45 is lowered and grounded, thereby making the tire house 15 of the rear wheel 13c 90°. You can make the rotation very smooth. As the means for lifting the rear wheel 13c, the shaft to which the rear wheel 13c is connected may be provided with a lifting function. It is not something that can be done.
Further, by lowering the auxiliary tire 45 below the rear tire 13c and grounding it, the rear tire 13c can be relatively lifted.

After the rear portion of the trailer portion 14 is opened by rotating the tire house 15 by 90°, the inclined plate 21 is installed at a predetermined position on the rear portion of the trailer portion 14 as shown in FIG. By doing so, even if the cargo to be loaded on the trailer portion 14 is heavy, it can be loaded onto the trailer portion 14 without difficulty via the inclined plate 21 as shown in FIG. of. In FIG. 10, 51 is cargo loaded on the trailer portion 14 .

After loading the cargo 51 on the trailer portion 14, as shown in FIG. 11, the inclined plate 21 is removed, and as shown in FIG. By rotating it, the tire house 15 of the rear wheel 13c rotates 90 degrees in conjunction with the rotating piece 41 and returns to its original position.
At this time as well, the rear wheel 13c in the tire housing 15 of the rear wheel 13c is lifted by an appropriate means, and the auxiliary tire 45 is lowered and grounded, so that the tire housing 15 of the rear wheel 13c is rotated by 90°. can be made to rotate very smoothly.

As described above, the tire house 15 of the rear wheel 13c is pivotally attached to the rear portion of the trailer portion 14 with a lowered floor surface by the rotating shaft 16, and when the low-floor trailer 11 is loaded with cargo, the tire house 15 is attached. Then, the rear part of the trailer part 14 is opened by rotating the rotary shaft 16 by 90° in the horizontal direction, and the cargo can be easily transported by eliminating the step at the rear part of the trailer part 14 by the inclined plate 21 connected to the rear part of the trailer part 14. can be installed.

That is, in order to open the rear portion of the trailer portion 14 and eliminate the step at the rear portion of the trailer portion 14 to facilitate loading of the cargo, the rear portion of the trailer portion 14 is connected to an inclined plate 21 shown in FIG. Therefore, when heavy objects including large vehicles and construction machines are loaded, by eliminating the step due to the tire house 15 which was an obstacle to passage, it is possible to pass through the stepped portion without difficulty. of.

As described above, according to the present invention, the structure is simple and the operation of opening the tire house of the rear wheels of the low-floor trailer is easy, and heavy objects including large vehicles and construction machines can be smoothly loaded on the low-floor trailer. As a low-floor type, it has become possible to compactly load heavy objects such as large vehicles and construction machinery with a vehicle height.
Therefore, as long as the gist of the present invention is not changed, it is suitable for trucks for transporting large vehicles or other transportation vehicles that have a low-floor trailer portion and that can load and transport tall and heavy objects without difficulty. can be applied.

11 Low-floor trailer 12 Driver's seat 13a, 13b, 13c Wheel 14 Trailer part 15 Tire house 16 Rotating shaft 21 Inclined plate 31 Hydraulic cylinder 32 Arm 41 Rotating piece 42 Axial pin 43 Flat pin 44 Retaining mechanism 51 Cargo

Claims (4)

A tire house for the rear wheels is attached to the rear portion of the trailer portion of the low-floor trailer by a rotating shaft, and when cargo is loaded onto the trailer, the tire house is horizontally rotated by 90° on the rotating shaft portion. A tire house opening mechanism for rear wheels of a low-floor trailer, characterized in that the rear part of the trailer is opened and a step in the rear part of the trailer is eliminated to facilitate loading of cargo.
Tire housing opening mechanism for the rear wheels of low-floor trailers. 2. The low floor according to claim 1, wherein the means for opening the rear portion of the trailer portion and eliminating steps at the rear portion of the trailer portion to facilitate loading of cargo is an inclined plate attached to the rear portion of the trailer portion. The tire house opening mechanism for the rear wheels of the trailer. 3. A rear wheel tire of a low-floor trailer according to claim 1 or 2, wherein the mechanism for rotating the tire house of the rear wheel by 90 degrees in the horizontal direction is an operating mechanism based on a hydraulic cylinder or an air suspension. house opening mechanism. Auxiliary tires are installed at the bottom of the tire house for the rear wheels of the low-floor trailer. 4. The low-floor trailer according to any one of claims 1 to 3, characterized in that by grounding, the tire house of the rear wheel can be rotated 90 degrees very smoothly. Rear tire house opening mechanism.

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