JP2016064747A - Multi-axle high loading truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-axle high loading truck capable of supporting a passage part stretched between a front loading platform and a rear loading platform while suppressing the deterioration in rigidity in a vehicle longitudinal direction.SOLUTION: A multi-axle high loading truck 1 having three or more axles, includes: a front vehicle 2 having a pair of front frames 21 and 21 arranged side by side in a vehicle width direction that extend in a vehicle longitudinal direction, and a front loading platform 24 placed on the front frames 21; a rear vehicle 3 having a pair of rear frames 31 and 31 arranged side by side in the vehicle width direction that extend in the vehicle longitudinal direction, and a rear loading platform 34 placed on the rear frames 31; a pivotal connection part 4 that pivotally connects the front frames 21 and the rear frames 31 in the vehicle longitudinal direction; a passage part 5 stretched between the front loading platform 24 and the rear loading platform 34 above the pivotal connection part 4 in a vehicle vertical direction; and a passage support member 8 removably attached to the pivotal connection part 4 for supporting the passage part 5.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a multi-axis high load truck.

  Trucks play a major role as a means of transporting luggage and the like. However, since the number of drivers driving trucks has decreased in recent years, the shortage of trucks has become a major problem. In view of this, it has been considered to increase the maximum loading capacity by increasing the total length of the truck by increasing the number of the trucks (see Patent Documents 1 and 2, for example).

JP 11-278293 A Japanese Patent Laid-Open No. 09-226619

  However, the multi-axle vehicles described in Patent Documents 1 and 2 have a limit in increasing the maximum load capacity. Therefore, in the Japanese Patent Application No. 2014-101485 filed earlier, the inventors of the present invention multi-axis by connecting the frame of the front vehicle and the frame of the rear vehicle so as to be swingable at the swing connection portion. At the same time, we proposed a multi-axle high-load truck that connects the front loading platform of the front vehicle and the rear loading platform of the rear vehicle with a passage and a hood. Note that Japanese Patent Application No. 2014-101485 has not been published at this time.

  By the way, in such a multi-axis high-loading truck, since the passage portion is bridged between the front loading platform and the rear loading platform, a member for supporting the passage portion is required between the front loading platform and the rear loading platform. In addition, since the passage section allows people and luggage to pass between the front and rear loading platforms, it is necessary to match the height of the floor of the front loading platform and the rear loading platform with the height of the passage portion. There is. In view of this, it is conceivable to support the passage portion by a swing connecting portion that connects the front vehicle and the rear vehicle so as to be swingable by the swing connecting portion.

  However, in order to suppress a decrease in rigidity in the vehicle front-rear direction, the swing connection portion is disposed at the same height as the frames of the front vehicle and the rear vehicle. For this reason, a channel | path part cannot be supported in the state which made the height of a channel | path part and the height of the floor of a front loading platform and a rear loading platform correspond. It is also conceivable to arrange the swing connection portion above the frame of the front vehicle and the rear vehicle by curving a member that connects the frame of the front vehicle and the rear vehicle and the swing connection portion. However, since the rigidity in the longitudinal direction of the vehicle decreases, it is not realistic.

  Accordingly, an object of the present invention is to provide a multi-axis high-loading truck that can support a passage portion spanned between a front loading platform and a rear loading platform while suppressing a decrease in rigidity in the vehicle longitudinal direction. To do.

  A multi-axis high-loading truck according to the present invention is a multi-axis high-loading truck having three or more axles, and is mounted on a front frame and a pair of front frames that extend side by side in the vehicle width direction. A front vehicle having a front cargo bed placed thereon, a rear vehicle having a pair of rear frames attached in the vehicle width direction and extending in the vehicle front-rear direction, and a rear cargo bed placed on the rear frame; A swing connecting portion that swingably connects the front frame and the rear frame in the vehicle front-rear direction, a passage portion that spans between the front load platform and the rear load platform above the swing connection portion, and a swinging portion. A passage support member that is detachably attached to the dynamic connection portion and supports the passage portion.

  In the multi-axis high load truck according to the present invention, the passage portion is supported by a passage support member attached to the swing connection portion. For this reason, a channel | path part can be appropriately supported between a front part loading platform and a rear part loading platform. Furthermore, since the swing connecting portion can be disposed at the same height in the vehicle vertical direction as the front frame and the rear frame, it is possible to suppress a decrease in rigidity in the vehicle longitudinal direction of the multi-axis high load truck. it can. In addition, since the passage support member is detachably attached to the swing connection portion, the passage support member having an appropriate length is swung according to the height difference between the swing connection portion and the floor of the front and rear cargo beds. Can be attached to the connection. Thereby, the height of the floor of a front loading platform and a rear loading platform and the height of a channel | path part can be corresponded irrespective of the vehicle type of a front vehicle and a rear vehicle.

  Further, the passage support member may be a rod-shaped member that extends upward from the swing connection portion in the vehicle vertical direction. In this multi-axis high load truck, the passage support member is a rod-like member extending upward in the vehicle vertical direction from the swing connection portion, so that it is possible to suppress an increase in manufacturing cost and between the swing connection portion and the passage portion. Sufficient space can be secured. For this reason, for example, wiring connected to the front vehicle and the rear vehicle can be arranged in this space.

  Further, the passage support member may have a screw portion that is screwed into the swing connection portion. In this multi-axis high load truck, the passage support member is screwed to the swing connection portion by the screw portion, and therefore can be easily attached to and detached from the swing connection portion.

  ADVANTAGE OF THE INVENTION According to this invention, the channel | path part spanned over a front part loading platform and a rear loading platform can be supported, suppressing that the rigidity of a vehicle front-back direction falls.

It is a side view of a multi-axis high load truck. It is a top view which shows a part of multi-axis high loading truck. It is the figure which looked at the inside of the loading platform of a multi-axis high loading truck from the rear loading platform side to the front loading platform side. It is a schematic side view which shows a rocking | swiveling connection part, a channel | path part, and a channel | path support member. It is a perspective view of a rocking connection part. It is a perspective view which shows the state which attached the channel | path support member to the rocking | fluctuation connection part. It is a figure which shows a channel | path support member. It is a schematic sectional drawing which shows the support structure of a channel | path support member.

  Hereinafter, a multi-axis high load truck according to an embodiment will be described in detail with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted. In the following description, front and rear in the vehicle front-rear direction are also simply referred to as front and rear, and upper and lower in the vehicle vertical direction are also simply referred to as upper and lower.

  FIG. 1 is a schematic side view of a multi-axis high load truck. FIG. 2 is a plan view showing a part of the multi-axis high load truck. FIG. 3 is a view of the inside of the loading platform of the multi-axis high loading truck as viewed from the rear loading platform side to the front loading platform side. FIG. 4 is a schematic side view showing the swing connection portion, the passage portion, and the passage support member. As shown in FIGS. 1 to 4, the multi-axis high-loading truck 1 of the present embodiment is a multi-axis high-loading truck having three or more axles, and a front vehicle 2, a rear vehicle 3, and a swing connection A portion 4, a passage portion 5, a hood 6, a floor support member 7, and a passage support member 8 are provided.

  The front vehicle 2 is a drive vehicle disposed on the front side in the vehicle front-rear direction of the multi-axis high-load truck 1. As the front vehicle 2, for example, a generally marketed truck can be used. The front vehicle 2 includes a pair of front frames 21 and 21 that are provided side by side in the vehicle width direction and extend in the vehicle front-rear direction. The pair of front frames 21 and 21 includes a front axle 22 that is located on the front side in the vehicle front-rear direction and includes one or more axles, and a rear axle that is located on the rear side in the vehicle front-rear direction. A rear axle portion 23 is attached. Of the wheels connected to the front axle 22, at least a pair of left and right wheels are steering wheels connected to a steering mechanism. At least one shaft of the rear axle 23 is a drive shaft connected to a propeller shaft, a differential gear, and the like. In addition, a front loading platform 24 on which loads are loaded is mounted and fixed on the pair of front frames 21 and 21. The front loading platform 24 includes a front loading platform vehicle body 25 and a front loading platform floor 26 fixed to the front loading platform vehicle body 25. An opening (not shown) communicating with the outside of the front cargo bed 24 is formed on the rear surface of the front cargo bed 24.

  The rear vehicle 3 is a driven vehicle disposed on the rear side in the vehicle front-rear direction of the multi-axis high-load truck 1. As the rear vehicle 3, for example, a commercially available trailer (towed vehicle) can be used. The rear vehicle 3 includes a pair of rear frames 31, 31 that are provided side by side in the vehicle width direction and extend in the vehicle front-rear direction. A central axle portion 32 located at the center in the vehicle front-rear direction is attached to the pair of rear frames 31, 31. The central axle portion 32 is composed of two axles. For this reason, the rear vehicle 3 is a center axle type vehicle that can stand on its own even when separated from the front vehicle 2. A rear cargo bed 34 on which a load is loaded is placed and fixed on the pair of rear frames 31 and 31. The rear cargo bed 34 includes a rear cargo body 35 and a rear cargo floor 36 fixed to the rear cargo body 35. An opening (not shown) that communicates with the outside of the rear cargo bed 34 is formed on the front surface of the rear cargo bed 34.

  The swing connection part 4 connects the front frame 21 and the rear frame 31 so as to be swingable in the vehicle longitudinal direction. The swing connecting portion 4 is connected to the front frame 21 and the rear frame 31, and the front frame 21 is centered on the axis A extending in the vehicle vertical direction between the front vehicle 2 and the rear vehicle 3. And the rear frame 31 are swingably connected. The swing connecting portion 4 does not connect the front frame 21 and the rear frame 31 so as to be easily detachable like a trailer (towing vehicle), but instead of connecting the front frame 21 and the rear frame 31 by fastening bolts. Are connected in a non-detachable manner. However, when there are special circumstances such as when performing maintenance, the front frame 21 and the rear frame 31 can be separated by removing the bolts.

  FIG. 5 is a perspective view of the swing connecting portion. As shown in FIGS. 1, 2, 4, and 5, the swing connection portion 4 includes a front frame side connection portion 41, a rear frame side connection portion 42, and a swing portion 43.

  The front frame side connection part 41 is a part connected to the front frame 21. The front frame side connection portion 41 includes a laterally extending portion 41a. The laterally extending portion 41a is disposed behind the front frame 21 in the vehicle front-rear direction, and is connected to the front frame 21 via a plurality of connecting members (not shown). The laterally extending portion 41a extends in the vehicle front-rear direction, and both end portions of the laterally extending portion 41a are located outside the pair of front frames 21, 21 in the vehicle front view. The laterally extending portion 41a is disposed at the same height as the front frames 21 and 21 in the vehicle vertical direction. For this reason, the laterally extending portion 41 a is disposed on an extension line of the front frames 21 and 21.

  The rear frame side connection part 42 is a part connected to the rear frame 31. The rear frame side connection portion 42 includes a laterally extending portion 42a. The laterally extending portion 42a is disposed behind the rear frame 31 in the vehicle front-rear direction, and is connected to the rear frame 31 via a plurality of connecting members (not shown). The laterally extending portion 42a extends in the vehicle front-rear direction, and both end portions of the laterally extending portion 42a are located on the outer side in the vehicle width direction of the pair of rear frames 31 and 31 in the vehicle front view. The laterally extending portion 42a is disposed at the same height as the rear frames 31, 31 in the vehicle vertical direction. For this reason, the laterally extending portion 42 a is disposed on an extension line of the rear frames 31 and 31.

  The swing part 43 is a part for enabling swinging with the axis A as the swing center. The swing part 43 is disposed between the front vehicle 2 and the rear vehicle 3. The swinging portion 43 is connected to the laterally extending portion 41a and the laterally extending portion 42a, and extends linearly in the vehicle longitudinal direction between the laterally extending portion 41a and the laterally extending portion 42a. The swing part 43 is divided into a front swing part 43a disposed on the front vehicle 2 side and a rear swing part 43b disposed on the rear vehicle 3 side. The front swinging portion 43a is pivotably connected with the axis A as the swing center. The structure of the oscillating part 43 is not particularly limited, and any structure can be used as long as the front oscillating part 43a and the rear oscillating part 43b are pivotably connected with the axis A as the oscillating center. It may be a structure.

  A boss portion 45a for attaching the passage support member 8 is formed on the upper surface 44a of the front swinging portion 43a. A boss portion 45b for attaching the passage support member 8 is formed on the upper surface 44b of the rear swinging portion 43b. The boss portion 45a and the boss portion 45b protrude upward in the vehicle vertical direction from the upper surface 44a of the front swing portion 43a and the upper surface 44b of the rear swing portion 43b, respectively. The upper end surfaces of the boss portion 45a and the boss portion 45b are formed in a flat shape and have the same height as the upper end surfaces of the laterally extending portion 41a and the laterally extending portion 42a. A screw hole 46a into which the passage support member 8 is screwed is formed on the upper end surface of the boss portion 45a, and a screw hole 46b into which the passage support member 8 is screwed is formed on the upper end surface of the boss portion 45b. Yes.

  A plurality of the boss portions 45a are formed in the vicinity of the connecting portion with the rear swinging portion 43b, that is, in the vicinity of the central portion between the front cargo bed 24 and the rear cargo bed 34. Further, a plurality of boss portions 45a are formed in the vicinity of the connecting portion with the laterally extending portion 41a, that is, in the vicinity of the end portion on the front cargo bed 24 side between the front cargo bed 24 and the rear cargo bed 34. Similarly, a plurality of boss portions 45b are formed in the vicinity of the connecting portion with the front swinging portion 43a, that is, in the vicinity of the central portion between the front cargo bed 24 and the rear cargo bed 34. A plurality of boss portions 45b are formed in the vicinity of the connecting portion with the laterally extending portion 42a, that is, in the vicinity of the end portion on the rear cargo bed 34 side between the front cargo bed 24 and the rear cargo bed 34.

  As shown in FIGS. 1 to 4, the passage portion 5 is stretched over the front cargo bed 24 and the rear cargo bed 34, and functions as a passage for going back and forth between the front cargo bed 24 and the rear cargo bed 34. To do. The passage portion 5 is formed in a substantially disc shape (disc shape). More specifically, the passage portion 5 includes a disk-shaped disc portion 51 extending from the front cargo bed 24 to the rear cargo bed 34 so that the vicinity of the connecting portion with the front cargo bed 24 has a predetermined width. Has spread.

  An end portion of the passage portion 5 on the front vehicle 2 side is fixed to the front cargo bed 24 so that a gap between the passage portion 5 and the front cargo bed floor 26 is within a predetermined range. The end portion 52 on the rear vehicle 3 side of the disc portion 51 is hung on the rear cargo bed 34 so as to be slidable with respect to the rear cargo bed 34. That is, the passage portion 5 is not fixed to the rear vehicle 3 and is rotatable about the axis A with respect to the rear cargo bed 34. For this reason, the channel | path part 5 is also called a turntable.

  Auxiliary plate portions 53 for securing the width of the passage portion 5 are provided on both sides in the vehicle width direction of the end portion on the rear cargo bed 34 side of the disc portion 51.

  And since the channel | path part 5 and the auxiliary | assistant board part 53 function as a channel | path, they are substantially flush with the front cargo bed floor 26 and the rear cargo bed floor 36. That is, the heights of the upper surfaces of the passage portion 5 and the auxiliary plate portion 53 coincide with the heights of the upper surfaces of the front cargo bed floor 26 and the rear cargo bed floor 36 in the vehicle vertical direction. In addition, the support structure of the channel | path part 5 and the auxiliary | assistant board part 53 is mentioned later.

  The hood 6 is a member for forming a passage space between the front cargo bed 24 and the rear cargo bed 34. The hood 6 covers the swing connection portion 4 and the passage portion 5, and forms a passage space communicating with the opening on the rear surface of the front cargo bed 24 and the opening on the front surface of the rear cargo bed 34. In addition, the hood 6 is formed in an expandable bellows shape.

  As shown in FIG. 4, the floor support member 7 supports the front cargo bed floor 26 and the rear cargo bed floor 36 with respect to the laterally extending portion 41a and the laterally extending portion 42a. Specifically, a plurality of floor support members 7 are provided in each of the laterally extending portion 41a and the laterally extending portion 42a. The floor support member 7 is formed in a linearly extending rod shape, is erected on the laterally extending portion 41a and the laterally extending portion 42a, and extends upward in the vehicle vertical direction from the laterally extending portion 41a and the laterally extending portion 42a. . The floor support member 7 supports the front cargo bed floor 26 and the rear cargo bed floor 36 from below.

  FIG. 6 is a perspective view showing a state in which the passage support member is attached to the swing connection portion. 7A is a front view of the passage support member, and FIG. 7B is a cross-sectional view taken along line VII-VII in FIG. 7A. FIG. 8 is a schematic cross-sectional view showing the support structure of the passage support member. As shown in FIGS. 4 and 6 to 8, the passage support member 8 is detachably attached to the swing connection portion and supports the passage portion 5 and the auxiliary plate portion 53. Specifically, the passage support member 8 is provided corresponding to each boss 45a of the front swinging portion 43a and each boss 45b of the rear swinging portion 43b. The passage support member 8 is formed in a linearly extending rod shape, is erected on each boss portion 45a and each boss portion 45b, and extends upward in the vehicle vertical direction from each boss portion 45a and each boss portion 45b. . The passage support member 8 supports the passage portion 5 and the auxiliary plate portion 53 from below. The auxiliary plate portion 53 is supported by the passage support member 8 provided corresponding to the boss portions 45b formed at both ends in the vehicle width direction near the connection portion with the laterally extending portion 42a. The passage portion 5 is supported by a passage support member 8 provided corresponding to the other boss portion 45b.

  A threaded portion 8a that is screwed into the screw hole 46a of the front swinging portion 43a or the screw hole 46b of the rear swinging portion 43b is formed at one end of the passage support member 8. The passage support member 8 is attached to the front swing part 43a or the rear swing part 43b by screwing the screw part 8a into the screw hole 46a or the screw hole 46b. Note that the passage support member 8 can be removed from the front swing part 43a or the rear swing part 43b by removing the screw part 8a from the screw hole 46a or the screw hole 46b.

  A screw hole 8 b into which a screw 9 for fixing the passage portion 5 and the auxiliary plate portion 53 is screwed is formed at the other end portion of the passage support member 8. Therefore, the passage portion 5 and the auxiliary plate portion 53 can be supported and fixed to the passage support member 8 by the screws 9. The passage support member 8 does not need to directly support and fix the passage portion 5 and the auxiliary plate portion 53 with the screw 9. For example, the passage portion 5 and the auxiliary plate portion are interposed via other members such as a sliding plate. 53 may be indirectly supported.

  Moreover, the screw hole 8b can also screw the screw part 8a of the other channel | path support member 8. FIG. That is, a plurality of passage support members 8 can be connected in the extending direction of the passage support member 8. For this reason, it is possible to change the support height of the channel | path part 5 and the auxiliary | assistant board part 53 by the channel | path support member 8 by changing the number of the channel | path support members 8 to connect. In this case, the passage support members 8 having the same length may be connected, or the passage support members 8 having different lengths may be connected. For example, by connecting the short (thin) passage support member 8 to the passage support member 8 attached to the front swing portion 43a or the rear swing portion 43b, the support height of the passage portion 5 and the auxiliary plate portion 53 is increased. You can fine-tune the thickness.

  Although the cross-sectional shape of the passage support member 8 is not particularly limited, for example, it can be circular as shown in FIG. In this case, it is preferable to form a pair of opposed parallel surfaces 8 c on the outer peripheral surface of the passage support member 8 so that the passage support member 8 can be rotated with a tool such as a spanner.

  Thus, in the multi-axis high load truck 1 according to this embodiment, the passage portion 5 and the auxiliary plate portion 53 are supported by the passage support member 8 attached to the swing connection portion 4. For this reason, between the front part loading platform 24 and the rear part loading platform 34, the channel | path part 5 and the auxiliary | assistant board part 53 can be supported appropriately. Further, since the swing connecting portion 4 can be disposed at the same height in the vehicle vertical direction as the front frame 21 and the rear frame 31, the rigidity of the multi-axis high load truck 1 in the vehicle longitudinal direction is reduced. Can be suppressed. In addition, since the passage support member 8 is detachably attached to the swing connection portion 4, an appropriate length corresponding to the height difference between the swing connection portion 4, the front cargo bed floor 26, and the rear cargo bed floor 36 is obtained. The passage support member 8 can be attached to the swing connection portion 4. Thereby, irrespective of the vehicle type of the front vehicle 2 and the rear vehicle 3, the height of the front cargo bed floor 26 and the rear cargo bed floor 36 can be matched with the height of the passage portion 5 and the auxiliary plate portion 53.

  Further, since the passage support member 8 is a rod-like member extending upward in the vehicle vertical direction from the swing connection portion 4, an increase in manufacturing cost can be suppressed, and the swing connection portion 4, the passage portion 5, the auxiliary plate portion 53, and the like. A sufficient space can be secured between the two. For this reason, for example, wirings connected to the front vehicle 2 and the rear vehicle 3 can be arranged in this space.

  Further, since the passage support member 8 is screwed to the swing connection portion 4 by the screw portion 8a, it can be easily attached to and detached from the swing connection portion 4.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments. The present invention can be modified without departing from the scope described in the claims or applied to other embodiments. May be.

  For example, in the above embodiment, the passage support member 8 has been described as a rod-like member extending from the swing connection portion 4 upward in the vehicle vertical direction. However, any shape and structure can be used as long as the passage portion 5 can be supported. May be.

  In the above embodiment, the passage support member 8 is described as being detachably attached to the swing connection portion 4 by screwing the screw portion 8a to the swing connection portion 4. However, the passage support member 8 can be swung by any structure and means. It is good also as what attaches to the dynamic connection part 4 so that attachment or detachment is possible.

  DESCRIPTION OF SYMBOLS 1 ... Multi-axle high load truck, 2 ... Front vehicle, 3 ... Rear vehicle, 4 ... Swing connection part, 5 ... Passage part, 6 ... Top, 7 ... Floor support member, 8 ... Passage support member, 8a ... Screw Part, 8b ... screw hole, 8c ... parallel plane, 9 ... screw, 21 ... front frame, 22 ... front axle part, 23 ... rear axle part, 24 ... front cargo bed, 25 ... car body for front cargo bed, 26 DESCRIPTION OF SYMBOLS ... Front cargo bed, 31 ... Rear frame, 32 ... Central axle, 34 ... Rear cargo bed, 35 ... Rear cargo body, 36 ... Rear cargo floor, 41 ... Front frame side connection, 41a ... Part 42: rear frame side connection part 42a ... laterally extending part 43 ... swing part 43a ... front swing part 43b ... rear swing part 44a ... top face 44b ... top face 45a ... boss part 45b ... Boss part, 46a ... Screw hole, 46b ... Screw hole, 51 ... Disk part, 52 ... End part, 53 ... Auxiliary plate part, A ... Shaft .

Claims (3)

A multi-axle high load truck with three or more axles,
A front vehicle having a pair of front frames attached in the vehicle width direction and extending in the vehicle front-rear direction; and a front loading platform placed on the front frame;
A rear vehicle having a pair of rear frames attached in the vehicle width direction and extending in the vehicle front-rear direction, and a rear cargo bed placed on the rear frame;
A swing connecting portion that swingably connects the front frame and the rear frame in a vehicle longitudinal direction;
A passage portion spanned between the front cargo bed and the rear cargo bed in the vehicle vertical direction above the swing connection portion;
A passage support member that is detachably attached to the swing connection portion and supports the passage portion.
Multi-axis high load truck. The passage support member is a rod-like member extending upward in the vehicle vertical direction from the swing connection portion.
The multi-axis high load truck according to claim 1. The passage support member has a screw portion that is screwed into the swing connection portion.
The multi-axis high load truck according to claim 1 or 2.

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