JP2009166531A - Trailer and truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trailer and a truck capable of increasing the freight loading amount in comparison with an ordinary trailer formed by observing the whole length limit under the law. <P>SOLUTION: This trailer 1 is formed by fixing a pair of main frames 2 and 2 in right and left by using lateral frames 3, and providing a gooseneck 4 in a front part of the main frame 2. The gooseneck 4 is formed to be gradually expanded outward from a nearly front end to a step part 42, and the nearly front end of the step part 42 of the gooseneck 4 is provided outside of a rear part 6 of the main frame 2, and an intermediate part 5 of the main frame 2 is formed to be gradually narrowed inward from the step part 42 of the gooseneck 4 to a rear side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a trailer and a truck that are loaded with a container or the like and are pulled by being connected to a tractor.

  Conventionally, trailers are widely used in transportation of containers and the like. The trailer has a gooseneck at the front, and is connected to the tractor by connecting the vicinity of the front end of the gooseneck to a coupler at the rear of the tractor, and is pulled by the tractor.

  And since it is desired to increase the cargo load on the trailer, a trailer capable of increasing the cargo load has also been proposed (see Patent Document 1). The trailer of Patent Document 1 includes a front frame having a box frame having a box-shaped cross section parallel to two goose necks, a rear frame having a side frame into which the box frame is inserted, the box frame and the side frame. The box frame is provided with a fastener to be fastened, and the box frame moves forward and backward in the side frame to expand and contract, and the cargo load can be increased by extending the frame.

JP 2000-62643 A

  By the way, the total length of the tractor and trailer is limited to 12 m or less by the Road Traffic Law or the Vehicle Restriction Order from the viewpoint of ensuring safety. Therefore, even when the frame is extended and used in the trailer of Patent Document 1, since the total length of the tractor and trailer is limited to 12 m or less, a normal trailer formed to meet the total length limit of 12 m is used. It is not possible to increase the cargo loading capacity. Therefore, there is a demand for a trailer that can increase the cargo loading capacity as compared with a normal trailer that is formed in accordance with the total length restriction of 12 m.

  The present invention is proposed in view of the above-described problems, and provides a trailer capable of increasing the cargo load amount as compared with a normal trailer formed in conformity with the legal total length restriction, and a lorry equipped with the trailer. For the purpose.

  The trailer of the present invention is a trailer in which a pair of left and right main frames are fixed by a horizontal frame, and a goose neck is provided at the front portion of the main frame, and a substantially front end of a step portion of the goose neck is from a rear portion of the main frame. Is also provided outside.

  The trailer according to the present invention is characterized in that the gooseneck is formed so as to gradually expand outward from a substantially front end toward the stepped portion. Further, in place of the above configuration, the gooseneck is substantially L-shaped in plan view, and the stepped portion is provided on the outside, or the gooseneck is formed so as to gradually expand outward from the substantially intermediate position toward the stepped portion. It is also possible to adopt a configuration or the like.

  The trailer of the present invention is characterized in that an intermediate portion of the main frame is formed so as to gradually narrow inward from the stepped portion of the gooseneck toward the rear. For example, when the gooseneck is formed so as to gradually expand outward from the substantially front end toward the stepped portion, the plan view of the gooseneck and the intermediate portion of the main frame has the stepped portion as a bent portion. The shape is substantially rectangular.

  In addition, the truck according to the present invention includes the trailer according to the present invention and a tractor provided with a coupler at the rear of the vehicle body, and the vicinity of the front end of the gooseneck of the trailer is connected to the coupler.

  The invention disclosed in this specification includes, in addition to the configurations of each invention and each embodiment, those specified by changing these partial configurations to other configurations disclosed in this specification, or these configurations. To which other configurations disclosed in the present specification are added and specified, or those partial configurations deleted and specified to the extent that partial effects can be obtained are included.

  In the trailer or the lorry of the present invention, the substantially front end of the step portion of the gooseneck is provided outside the rear portion of the main frame, so that the linear distance from the connection center of the trailer and the tractor to the substantially front end of the step portion of the gooseneck is increased. Thus, the distance from the connection center in the longitudinal direction of the trailer to the substantially front end of the stepped portion can be shortened. In other words, the length of the frame behind the stepped portion of the gooseneck can be lengthened to increase the space for loading cargo. Accordingly, it is possible to increase the cargo loading capacity as compared with a normal trailer formed in accordance with the legal total length restriction.

  Further, by forming the gooseneck so as to gradually expand outward from the substantially front end toward the stepped portion, for example, the strength of the main frame is increased as compared with the case where the stepped portion is provided on the outside with the gooseneck substantially L-shaped in plan view. be able to.

  In addition, by forming the intermediate portion of the main frame so as to gradually narrow inward from the stepped portion of the gooseneck, the strength of the main frame can be increased compared to when the main frame is bent at a steep angle.

  A trailer and a truck according to the present invention will be described with reference to a trailer according to an embodiment.

  As shown in FIGS. 1 and 2, the trailer 1 according to the present embodiment is a trailer 1 on which a container or the like can be mounted. 2 and the main frames 2 and 2 are fixed by horizontal frames 3 provided at a plurality of positions at predetermined positions. The main frame 2 has a front gooseneck 4 formed so as to gradually expand outward from the front end toward the rear, and an intermediate part formed so as to gradually narrow inward from the rear end of the gooseneck 3 to the rear. 5 and a rear portion 6 formed linearly along the longitudinal direction of the trailer 1.

  The gooseneck 4 has a front part 41 extending substantially linearly in side view and a step part 42 formed at the rear end of the front part 41. The front portions 41 and 41 are formed so as to gradually expand outward from the front end toward the stepped portion 42 in a plan view, and the stepped portion 42 and the front end surface 421 thereof are the rear portion 6 of the main frame 2 or the front end of the front portion 41. It is provided so that it may be located outside in a plan view. In addition, a mounting base 43 is provided on the front side of the front portion 41 in the vicinity of the front end of the gooseneck 4, and a coupling pin 44 projects downward from the mounting base 43.

  The intermediate portions 5 and 5 are formed so as to gradually narrow inward in a plan view from the step portion 42 of the gooseneck 4 toward the front end of the rear portion 6. The gooseneck 4 and the intermediate portion 5 have the stepped portion 42 as a bent portion. It has a substantially square shape in plan view. A wheel 7 is provided at a position corresponding to the rear portion 6 of the main frame 2, and a tail lamp 8 is provided at a position corresponding to the rear end of the rear portion 6.

  The trailer 1 is connected to the tractor 9 by inserting a coupling pin 44 into a coupler 91 provided at the rear of the vehicle body of the tractor 9, and the tractor 9 and the trailer 1 constitute a cargo vehicle. In addition, 92 is a wheel of the tractor 9 provided at the rear part of the vehicle body, and 93 is a vehicle body rear end of the tractor 9.

  When the trailer 1 of the above embodiment is connected to the tractor 9, as shown in FIGS. 2 and 3, a distance L 1 from the connection center O to the front end surface 421 of the stepped portion 42 is secured, and the maximum rotatable radius of the trailer 1 is secured. R1 can be secured. On the other hand, when the front end surface 421a of the step portion 42a of the gooseneck in the linear main frame of the conventional trailer is provided at a position corresponding to the front end surface 421 in the front-rear direction of the trailer 1, The distance L2 from the center O to the front end surface of the stepped portion is shorter than the distance L1, and the maximum rotatable radius R2 of the trailer is also reduced.

  That is, according to the configuration of the present embodiment, the cross-hatched region α shown in the figure can be effectively used as a range in which the vehicle rear end 93 can move, and the connection center O and the step portion 42 in the longitudinal direction of the trailer 1 can be used. While shortening the distance to the front end surface 421, it is possible to secure an area in which the rear portion of the tractor 9 corresponding to the distance 1 and the maximum rotatable radius R1 is accommodated. In other words, the length of the main frame 2 on the rear side of the stepped portion 42 of the gooseneck 4 can be increased, and the space for loading cargo can be increased. Accordingly, it is possible to increase the cargo loading capacity as compared with a normal trailer formed in accordance with the legal total length restriction.

  Further, the gooseneck 4 is formed so as to gradually expand outward from the front end toward the stepped portion 42, and the intermediate portion 5 is formed so as to gradually narrow inward from the stepped portion 42 of the gooseneck 4, The main frame 2 having high strength can be obtained by forming the portion 5 and the stepped portion 42 into a substantially rectangular shape in a plan view.

  The trailer of the present invention includes an appropriate configuration in which the substantially front end of the step portion 42 of the gooseneck 4 is provided outside the rear portion 6 or substantially the whole of the main frame 2. As shown in the figure, the gooseneck 4 is substantially L-shaped in plan view, and the front end surface 421 of the step part 42 is provided outside the rear part 6 of the main frame 2, or the gooseneck 4 is stepped from a substantially middle position of the front part 41. It is also possible to adopt a configuration that is formed so as to gradually expand outward toward the front end surface 421 of the portion 42.

  The present invention can be used for a trailer or a lorry equipped with a container or the like.

The side view of the trailer of embodiment. The top view of the trailer of embodiment. The expansion explanatory view around the level difference part in the trailer of an embodiment. The fragmentary top view which shows the gooseneck vicinity of the trailer of another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Trailer 2 ... Main frame 3 ... Horizontal frame 4 ... Gooseneck 41 ... Front part 42, 42a ... Step part 421, 421a ... Front end surface 43 ... Mounting stand 44 ... Coupling pin 5 ... Middle part 6 ... Rear part 7 ... Wheel 8 ... tail lamp 9 ... tractor 91 ... coupler 92 ... wheel 93 ... vehicle body rear end O ... connection center L1, L2 ... distance from connection center to front end surface of stepped portion R1, R2 ... maximum radius of trailer rotation

The trailer of the present invention is a trailer in which a pair of left and right main frames are fixed by a horizontal frame, and a goose neck is provided at the front portion of the main frame, and a front end surface of a step portion of the goose neck is from a rear portion of the main frame. Is also provided outside.

In addition, the truck according to the present invention includes the trailer according to the present invention and a tractor provided with a coupler at the rear of the vehicle body, and the vicinity of the front end of the gooseneck of the trailer is connected to the coupler. Further, in the lorry of the present invention, a pair of left and right main frames are fixed by horizontal frames, a goose neck is provided at the front of the main frame, and the front end surface of the step portion of the goose neck is more than the rear of the main frame. The gooseneck is provided on the outer side, and is formed so that the gooseneck gradually expands outward from the substantially front end of the gooseneck toward the step part, and the intermediate part of the main frame gradually narrows inward from the step part to the rear. And a tractor provided with a coupler at the rear portion of the vehicle body, and the vicinity of the front end of the gooseneck of the trailer is connected to the coupler, from the connection center of the connection to the front end surface of the stepped portion. Distance L1 and the distance from the connection center to the front end face of the step portion of the gooseneck in the linear main frame In the region α of the difference between the 2, the vehicle body rear end of the tractor and which are located so as to be movable.

As shown in FIGS. 1 and 2, the trailer 1 according to the present embodiment is a trailer 1 on which a container or the like can be mounted. 2 and the main frames 2 and 2 are fixed by horizontal frames 3 provided at a plurality of positions at predetermined positions. The main frame 2 includes a front gooseneck 4 formed so as to gradually expand outward from the front end toward the rear, and an intermediate portion formed so as to gradually narrow inward from the rear end of the gooseneck 4 to the rear. 5 and a rear portion 6 formed linearly along the longitudinal direction of the trailer 1.

  The present invention relates to a trailer and a truck that are loaded with a container or the like and are pulled by being connected to a tractor.

  Conventionally, trailers are widely used in transportation of containers and the like. The trailer has a gooseneck at the front, and is connected to the tractor by connecting the vicinity of the front end of the gooseneck to a coupler at the rear of the tractor, and is pulled by the tractor.

  And since it is desired to increase the cargo load on the trailer, a trailer capable of increasing the cargo load has also been proposed (see Patent Document 1). The trailer of Patent Document 1 includes a front frame having a box frame having a box-shaped cross section parallel to two goose necks, a rear frame having a side frame into which the box frame is inserted, the box frame and the side frame. The box frame is provided with a fastener to be fastened, and the box frame moves forward and backward in the side frame to expand and contract, and the cargo load can be increased by extending the frame.

JP 2000-62643 A

  By the way, the total length of the tractor and trailer is limited to 12 m or less by the Road Traffic Law or the Vehicle Restriction Order from the viewpoint of ensuring safety. Therefore, even when the frame is extended and used in the trailer of Patent Document 1, since the total length of the tractor and trailer is limited to 12 m or less, a normal trailer formed to meet the total length limit of 12 m is used. It is not possible to increase the cargo loading capacity. Therefore, there is a demand for a trailer that can increase the cargo loading capacity as compared with a normal trailer that is formed in accordance with the total length restriction of 12 m.

  The present invention is proposed in view of the above-described problems, and provides a trailer capable of increasing the cargo load amount as compared with a normal trailer formed in conformity with the legal total length restriction, and a lorry equipped with the trailer. For the purpose.

  The trailer of the present invention is a trailer in which a pair of left and right main frames are fixed by a horizontal frame, and a goose neck is provided at the front portion of the main frame, and a front end surface of a step portion of the goose neck is from a rear portion of the main frame. Is also provided outside.

  The trailer according to the present invention is characterized in that the gooseneck is formed so as to gradually expand outward from a substantially front end toward the stepped portion. Further, in place of the above configuration, the gooseneck is substantially L-shaped in plan view, and the stepped portion is provided on the outside, or the gooseneck is formed so as to gradually expand outward from the substantially intermediate position toward the stepped portion. It is also possible to adopt a configuration or the like.

  The trailer of the present invention is characterized in that an intermediate portion of the main frame is formed so as to gradually narrow inward from the stepped portion of the gooseneck toward the rear. For example, when the gooseneck is formed so as to gradually expand outward from the substantially front end toward the stepped portion, the plan view of the gooseneck and the intermediate portion of the main frame has the stepped portion as a bent portion. The shape is substantially rectangular.

In addition, the truck according to the present invention includes the trailer according to the present invention and a tractor provided with a coupler at the rear of the vehicle body, and the vicinity of the front end of the gooseneck of the trailer is connected to the coupler. Further, in the lorry of the present invention, a pair of left and right main frames are fixed by horizontal frames, a goose neck is provided at the front of the main frame, and the front end surface of the step portion of the goose neck is more than the rear of the main frame. The gooseneck is provided on the outer side, and is formed so that the gooseneck gradually expands outward from the substantially front end of the gooseneck toward the step part, and the intermediate part of the main frame gradually narrows inward from the step part to the rear. And a tractor provided with a coupler at the rear portion of the vehicle body, and the vicinity of the front end of the gooseneck of the trailer is connected to the coupler, from the connection center of the connection to the front end surface of the stepped portion. and the distance L1, the shape in which the rear portion of the main frame in place of the main frame extending straight in plan view In the case of the certain linear mainframe located at a position corresponding to the front end face of the step portion, and a distance L2 from the connecting center to the front end surface of the stepped portion of the gooseneck of the straight main frame In the difference area α, the rear end of the vehicle body of the tractor is movably provided.

  The invention disclosed in this specification includes, in addition to the configurations of each invention and each embodiment, those specified by changing these partial configurations to other configurations disclosed in this specification, or these configurations. To which other configurations disclosed in the present specification are added and specified, or those partial configurations deleted and specified to the extent that partial effects can be obtained are included.

  In the trailer or the lorry of the present invention, the substantially front end of the step portion of the gooseneck is provided outside the rear portion of the main frame, so that the linear distance from the connection center of the trailer and the tractor to the substantially front end of the step portion of the gooseneck is increased. Thus, the distance from the connection center in the longitudinal direction of the trailer to the substantially front end of the stepped portion can be shortened. In other words, the length of the frame behind the stepped portion of the gooseneck can be lengthened to increase the space for loading cargo. Accordingly, it is possible to increase the cargo loading capacity as compared with a normal trailer formed in accordance with the legal total length restriction.

  Further, by forming the gooseneck so as to gradually expand outward from the substantially front end toward the stepped portion, for example, the strength of the main frame is increased as compared with the case where the stepped portion is provided on the outside with the gooseneck substantially L-shaped in plan view. be able to.

  In addition, by forming the intermediate portion of the main frame so as to gradually narrow inward from the stepped portion of the gooseneck, the strength of the main frame can be increased compared to when the main frame is bent at a steep angle.

  A trailer and a truck according to the present invention will be described with reference to a trailer according to an embodiment.

  As shown in FIGS. 1 and 2, the trailer 1 according to the present embodiment is a trailer 1 on which a container or the like can be mounted. 2 and the main frames 2 and 2 are fixed by horizontal frames 3 provided at a plurality of positions at predetermined positions. The main frame 2 includes a front gooseneck 4 formed so as to gradually expand outward from the front end toward the rear, and an intermediate portion formed so as to gradually narrow inward from the rear end of the gooseneck 4 to the rear. 5 and a rear portion 6 formed linearly along the longitudinal direction of the trailer 1.

  The gooseneck 4 has a front part 41 extending substantially linearly in side view and a step part 42 formed at the rear end of the front part 41. The front portions 41 and 41 are formed so as to gradually expand outward from the front end toward the stepped portion 42 in a plan view, and the stepped portion 42 and the front end surface 421 thereof are the rear portion 6 of the main frame 2 or the front end of the front portion 41. It is provided so that it may be located outside in a plan view. In addition, a mounting base 43 is provided on the front side of the front portion 41 in the vicinity of the front end of the gooseneck 4, and a coupling pin 44 projects downward from the mounting base 43.

  The intermediate portions 5 and 5 are formed so as to gradually narrow inward in a plan view from the step portion 42 of the gooseneck 4 toward the front end of the rear portion 6. The gooseneck 4 and the intermediate portion 5 have the stepped portion 42 as a bent portion. It has a substantially square shape in plan view. A wheel 7 is provided at a position corresponding to the rear portion 6 of the main frame 2, and a tail lamp 8 is provided at a position corresponding to the rear end of the rear portion 6.

  The trailer 1 is connected to the tractor 9 by inserting a coupling pin 44 into a coupler 91 provided at the rear of the vehicle body of the tractor 9, and the tractor 9 and the trailer 1 constitute a cargo vehicle. In addition, 92 is a wheel of the tractor 9 provided at the rear part of the vehicle body, and 93 is a vehicle body rear end of the tractor 9.

When the trailer 1 of the above embodiment is connected to the tractor 9, as shown in FIG. 2, the distance L1 from the connection center O to the front end surface 421 of the stepped portion 42 is secured, and the maximum rotatable radius R1 of the trailer 1 is secured. can do. On the other hand, when the front end surface 421a of the step portion 42a of the gooseneck in the linear main frame of the conventional trailer is provided at a position corresponding to the front end surface 421 in the front-rear direction of the trailer 1, The distance L2 from the center O to the front end surface of the stepped portion is shorter than the distance L1, and the maximum rotatable radius R2 of the trailer is also reduced.

That is, according to the configuration of the present embodiment, the cross-hatched region α shown in the figure can be effectively used as a range in which the vehicle rear end 93 can move, and the connection center O and the step portion 42 in the longitudinal direction of the trailer 1 can be used. While shortening the distance to the front end surface 421, it is possible to secure an area in which the rear portion of the tractor 9 corresponding to the distance L1 and the maximum rotatable radius R1 is accommodated. In other words, the length of the main frame 2 on the rear side of the stepped portion 42 of the gooseneck 4 can be increased, and the space for loading cargo can be increased. Accordingly, it is possible to increase the cargo loading capacity as compared with a normal trailer formed in accordance with the legal total length restriction.

  Further, the gooseneck 4 is formed so as to gradually expand outward from the front end toward the stepped portion 42, and the intermediate portion 5 is formed so as to gradually narrow inward from the stepped portion 42 of the gooseneck 4, The main frame 2 having high strength can be obtained by forming the portion 5 and the stepped portion 42 into a substantially rectangular shape in a plan view.

  The present invention can be used for a trailer or a lorry equipped with a container or the like.

The side view of the trailer of embodiment. The top view of the trailer of embodiment.

DESCRIPTION OF SYMBOLS 1 ... Trailer 2 ... Main frame 3 ... Horizontal frame 4 ... Gooseneck 41 ... Front part 42, 42a ... Step part 421, 421a ... Front end surface 43 ... Mounting stand 44 ... Coupling pin 5 ... Middle part 6 ... Rear part 7 ... Wheel 8 ... tail lamp 9 ... tractor 91 ... coupler 92 ... wheel 93 ... vehicle body rear end O ... connection center L1, L2 ... distance from connection center to front end surface of stepped portion R1, R2 ... maximum radius of trailer rotation

Claims (4)

A pair of left and right main frames are fixed with horizontal frames,
A trailer provided with a gooseneck at the front of the main frame,
The trailer characterized in that a substantially front end of a step portion of the gooseneck is provided outside a rear portion of the main frame.   The trailer according to claim 1, wherein the gooseneck is formed so as to gradually expand outward from a substantially front end toward the stepped portion.   The trailer according to claim 2, wherein an intermediate portion of the main frame is formed so as to gradually narrow inward from a stepped portion of the gooseneck.   A lorry comprising the trailer according to any one of claims 1 to 3 and a tractor provided with a coupler at a rear part of a vehicle body, wherein a vicinity of a front end of a gooseneck of the trailer is connected to the coupler.

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