JP2002046662A - Trailer tractor light truck and cargo transportation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trailer tractor light truck capable of minimizing a braking distance to a level that does not obstruct a safe run and a transportation system by the trailer tractor light truck for doubling a transportation volume to improve convenience for users. SOLUTION: This transportation system uses the trailer tractor light truck 10 having a trailer 15 connected to a rear part of a load-carrying platform 4 of the light truck 2 and an internal brake 20 so that a braking force resisting against an internal weight of the trailer 15 toward by the light truck 2 is generated on each wheel 18 of the trailer 15 when the light truck 2 brakes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trailer-light truck with a short braking distance, and a transportation system using the trailer-light truck.

[0002]

2. Description of the Related Art Conventionally, in the case of a small moving of a student, a single person, or the like, a 2-ton truck is too large, and a transportation system using a light truck is widely used. However, recently, the household goods of these persons are increasing, and the amount of household goods more than one transportation by light truck is often large. This is because a light truck has a maximum length of 3.4 m, a maximum dimension that can be loaded on a carrier excluding a driver's seat is about 2 m, and the maximum loading capacity is limited to 350 kg or less. For this reason, a transportation system using a trailer-trucked light truck in which a trailer is connected to the rear part of the bed of the light truck is also considered. The maximum load capacity of a trailer towed by this light truck is also within 350 kg, and the load capacity that can be transported at one time can be doubled. 700k in total luggage weight
For those within g, it can be completed in one transport.

[0003]

However, in the case of a light truck driven by a trailer, the inertial gravity caused by the weight of the trailer increases the braking distance of the light truck, which hinders the safe operation of transportation. There is a disadvantage that.

[0004] Therefore, the present invention provides a trailer-trucked light truck capable of shortening the braking distance as much as possible without hindering safe transportation operation, and a transportation system using the trailer-trucked light truck. The aim was to double the transport volume and improve the convenience of customers.

[0005]

In order to achieve the above-mentioned object, a first light-truck towed trailer according to the present invention is a light-truck towed trailer in which a trailer is connected to a rear part of a luggage carrier of the light truck. Wherein the freight is transported by a light truck having a large own weight so that a braking force that can withstand the inertial weight of the trailer to be pulled at the time of braking can be generated.

[0006] According to the above-mentioned trailer towed light truck, the inertial weight of the trailer loaded with luggage during braking is effectively braked by the weight of the light truck. That is, the light truck can be braked by the brake operation. At this time, the inertia force due to its own weight of the light truck in the braking state is excessive with respect to the inertial weight caused by traveling of the trailer. Can be reduced. Therefore, the entire trailer-trucked light truck can be stopped within the range of the original braking distance of the light truck.

In the trailer-truck light truck of the present invention, the weight of the light truck may be increased by increasing the weight of the vehicle base itself, but by mounting a cargo box on the carrier. Its own weight can be increased.

[0008] For example, it is possible to adopt a structure in which the packing box is made of a heavy material such as steel. According to the light truck equipped with such a cargo box, the weight of the truck can be increased and the cargo bed can be made robust, so that it is possible to load and transport various kinds of luggage safely.

[0009] In this case, the magnitude of the original weight of the light truck is different depending on the type of the vehicle and is not constant. However, the total weight of the vehicle body is adjusted so as to be in the range of 1430 kg to 1450 kg. preferable. If the total weight of the mini truck is within the above-mentioned range, a braking force that can withstand the inertial weight of the trailer may be generated at the time of braking, even if the trailer is loaded with 350 kg of luggage. it can. If the total weight of the light truck exceeds 1450 kg, the transportation cost is increased due to a decrease in fuel efficiency, which is economically negative.

[0010] The second light trailer towed by a trailer according to the present invention is a transportation system by a light towed truck in which a trailer is connected to a rear portion of a bed of the light truck.
An inertia brake is provided such that a braking force against the inertial weight of the trailer to be pulled is generated on each wheel of the trailer during braking.

In this trailer-trucked light truck, the inertia brake operates on the trailer itself to be pulled at the same time as the braking of the light truck, so that the braking operation on the light truck is not affected by the inertial weight of the trailer. In addition, the entire trailer-trucked light truck can be braked and stopped without any trouble.

The present invention also includes a configuration in which the retractable trailer is provided with a retractable guide wheel in the first and second trailer towed light trucks according to the present invention.

In such a trailer towed light truck having a retractable guide wheel provided on the trailer, even if the trailer is separated from the light truck, the load on the trailer can be reduced by making the retractable guide wheel movable. It is possible to maintain the same state as when towing.

[0014] The present invention includes a cargo transportation system characterized by utilizing the first and second trailer-truck light trucks described above.

According to the above-described luggage transport system of the present invention, a large amount of luggage can be transported safely and promptly using the trailer-truck light truck that can be braked short and reliably as described above. It becomes possible.

Further, according to the trailer-trucked light truck provided with the retractable guide wheel on the trailer, the retractable guide wheel is made movable even in the back of the road where the light truck cannot enter. Thus, it becomes possible to transport the luggage by pulling only the trailer manually.

[0017]

Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a light truck 1 tow a trailer according to the first embodiment includes a light truck 2 and a trailer 7 pulled by the light truck 2.

A cargo box 5 is provided above the cargo bed 4 of the light truck 2.
The weight of the light truck is 1,440 kg. In FIG. 1, reference numeral 3 denotes a driver's seat of the mini truck 2. 3.3 length of light truck 2
Of the 9 m, the driver's seat 3 occupies 1.12 m and the bed 4 occupies 2.27 m. A carrier 5a is provided on the ceiling of the loading platform 4, and luggage can be loaded on the upper portion of the carrier 5a.
Reference numeral 5b denotes a door for opening and closing the packing box 5.

As shown in FIGS. 1 and 2, the trailer 7 has a loading platform 8 mainly supported by a pair of wheels 9.
The loading platform 8 is provided at the center of the loading platform surface 8a formed by the frame 8b, and is provided with the towing rod 11 supported by the frame 8c protruding forward. The trailer 7 is connected to a coupler 12 provided inside the end 11 a of the towing rod 11 by a connecting pin 6 a of a connecting member 6 provided at the rear of the bed 4 of the mini truck 2.
Are connected in a state where the hitch pole 6b provided at the end of is fitted. Reference numeral 12a denotes a coupler lock. The coupler lock and the hitch ball 6b
Can be maintained in the fitted state. Trailer 7
Has a length of 2.174 m and a width of 1.4 m.
A car 13 is also mounted on the upper part of the trailer 7, and its total weight is 200 kg.

Accordingly, since the difference between the total weight of the light truck 2 and the total weight of the trailer 7 to be pulled is large, the braking operation of the light truck 2 is hardly affected by the inertial weight of the trailer 7. At times, the entire towed mini truck 1 can be braked and stopped. As a result, the trailer towed light truck 1
Can be stopped at substantially the same braking distance as when the light truck 2 is used alone.

As shown in FIG. 3, a light truck 2 towing a trailer according to the second embodiment is a light truck 2.
And a trailer 15 towed by the trailer 15, and a packing box 32 is mounted on a bed 16 of the trailer 15.
32a is a carrier, and 32b is a door for opening and closing the packing box 28.

The trailer 15 is mainly supported by a pair of wheels 18 as shown in FIG.
The carrier 16 has a platform 16 having a platform 16a formed of a frame formed by the frame b. 1
Reference numeral 6c denotes a frame connected to the frame portion of the frame 16b in order to strengthen the fixed portion of the towing rod 17. Further, the inertial brake 20 is provided inside the towing rod 17.

The inertia brake 20, as shown in FIG.
It comprises an exterior tube 21 and an interior tube 25 having one end inserted slidably in the exterior tube 21 along the longitudinal direction. A spring 29 is inserted into the outer peripheral portion of the inner tube 25,
One end is located between the support wall at the end of the outer tube 21 and the seat tube 26 forming a part of the inner tube 25 so that the outer tube 21 and the inner tube 25 always exert a biasing force in a direction away from each other. It is provided in. A coupler 27 is provided at an end of the seat tube 26.

A hitch ball 6b at the end of the connecting pin 6 of the mini truck 2 is fitted into the coupler 27.
a and the towing rod 17 are mutually angularly displaceable.
Reference numeral 19 denotes a coupler lock. By swinging the coupler lock, a state in which the hitch ball 6b is fitted to the coupler 27 can be secured.

The outer pipe 21 has a brake master 2
2, a lower portion of the brake master 22 extends into the outer pipe 21, one of which is provided with a hydraulic pipe 23, and the other of which has a stop shaft 24 protruding into the inner pipe 25. ing. Further, inside the inner pipe 25, a support rod 28 extends from the seat pipe 26 along the length direction of the inner pipe 25.
Is protruding. An end plate 28a is provided at the tip of the support rod 28.
Are provided so as to face the tip of the stop shaft 24. As shown in FIG. 3, the hydraulic pipe 23 is connected to the caliber brake 30, and exerts a braking action on a brake disc 31 provided on the wheel 18 by a hydraulic action via the hydraulic pipe 23. I have.

By mounting the packing box 32 on the loading platform 16 of the trailer 15, the total weight of the trailer 15 becomes 750.
kg or more, and the total weight of the mini truck 2 is 144
Compared to 0 kg, it is relatively large, about half. For this reason, when the light truck 2 is braked, the inertial weight of the trailer 15 affects the light truck 2. In this state, the braking distance of the tow light truck 10 is considerably longer than the original braking distance of the light truck 2. Would.

On the other hand, in the light truck 10 towed by a trailer, when the distance between the light truck 2 and the trailer 15 is reduced during braking, the exterior rod 21 is displaced toward the connecting pin 6a, and is stopped. The shaft 24 is the supporting rod 2
As a result, the stop shaft 24 is pushed into the brake master 22 side. As a result, the brake master 22 functions and hydraulic pressure is added to the hydraulic pipe 23. The added hydraulic pressure reaches the caliber brake 30 provided on the wheel 18, and the wheel 18 is braked by clamping the brake disc 31.

By exerting the braking function for each wheel 18 in the trailer 15, even when the difference between the total weight of the mini truck 2 and the total weight of the trailer 15 to be pulled is small, the trailer 15 can use the brake. The braking of the light truck 2 can be stopped by the trailer-pulled light truck 10 almost completely without being affected by the inertial weight. Thus, the entire trailer-trucked light truck 10 can be stopped at a braking distance substantially similar to that of the light truck 2.

According to the transportation system using the trailer-trucked light trucks 1 and 10 according to the first and second embodiments, the load weight of the load can be almost doubled, and the light load can be reduced. The driving operation can be performed at the same braking distance as when only the vehicle 2 is used, so that efficient and safe operation can be ensured.

Further, in the trailer-trucked light trucks 1 and 10 according to the first and second embodiments, according to the configuration in which the trailer 7 or 15 is provided with the retractable guide wheels 14, the trailer 7 or 15 can be moved from the light truck 2 to the trailer. The trailer 7 or 15 can be stabilized on the road surface by setting the retractable guide wheels 14 to the functional state when the 7 or 15 is removed, so that only the trailer 7 or 15 can be run manually. Becomes

[0031]

As described above, since the present invention is constituted, the following effects are exhibited. As described above, according to the trailer-trucked light truck of the present invention, a trailer-trucked light truck that trails a trailer with a light truck, by shortening the braking distance, it is possible to ensure sufficient safety for operation, It has become possible to use trailer-led light trucks for luggage transport systems.

Since the trailer bed towed by this mini truck can be used up to a maximum length of 2.5 m, the transport weight and volume per operation of the mini truck can be almost doubled. Therefore, it is possible to transport packages that could not be handled conventionally, thereby expanding the number of customers and uses.

As a result, it is possible to reduce the number of light trucks owned and the number of staff for operating the trucks, and it is possible to more economically operate luggage transportation by light trucks.

When the trailer is provided with retractable guide wheels, the towed light truck can be operated manually without the trailer from the light truck. It is possible to transport the luggage even to the back of the alley where it is difficult to make it difficult. Accordingly, the number of customers can be increased accordingly.

[Brief description of the drawings]

FIG. 1 is a front view of a towed light truck in a transportation system using a first trailer towed light truck according to the present invention.

FIG. 2 is a plan view of a trailer in the transportation system using the first trailer-trucked light truck of the present invention.

FIG. 3 is a front view of a towed light truck in a transportation system using a second trailer towed light truck according to the present invention.

FIG. 4 is a plan view of a trailer in the transportation system by the second trailer-truck light truck according to the present invention.

FIG. 5 is a vertical sectional front view of a brake operating mechanism of a trailer in a transportation system by a second trailer-trucked light truck according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Trailer towed light truck 2 Light truck 4 Light truck 4 Packing 5 Packing box 6 Connecting member 7 Trailer 8 Packing 9 Wheel 10 Trailer towing light truck 11 Tow rod 12 Connecting member 13 Luggage basket 14 Retractable guide wheel 15 Trailer 16 Luggage carrier 17 Towing Rod 18 Wheel 20 Inertial brake 21 Outer pipe 22 Brake master 23 Hydraulic pipe 24 Stop shaft 25 Inner pipe 26 Seat pipe 27 Coupler 28 Support rod 29 Spring 30 Caliber brake 31 Brake disc

Claims (5)

[Claims] In a trailer towed light truck in which a trailer is connected to a rear part of a luggage carrier of a light truck, the own weight is increased so that a braking force which can withstand the inertial weight of the trailer to be pulled can be generated during braking. A trailer-trucked light truck that carries freight by a light truck. 2. The trailer-trucked light truck according to claim 1, wherein the light truck has its own weight increased by mounting a packing box on its carrier. 3. In a transportation system using a towed light truck in which a trailer is connected to a rear portion of a luggage carrier of the light truck, a braking force is generated on each wheel of the trailer when braking, which can withstand the inertial weight of the towed trailer. Trailer towed light truck, characterized by having an inertial brake provided as described above. 4. The light truck according to claim 1, wherein the trailer is provided with a retractable guide wheel. 5. A luggage transport system using the light-truck truck towed by a trailer according to claim 1, 2, 3, or 4.