JP7157374B2 - vehicle carrier - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle carrier provided with a platform for loading vehicles.

2. Description of the Related Art Conventionally, a vehicle carrier provided with a carrier for loading a vehicle has been known. In many cases, the vehicle carrier slides the loading platform to lower it to the ground so that the loading operation can be performed at a height close to the ground.

By the way, in such a vehicle carrier, the loading platform is slid backward and lowered to the ground while being inclined. For this reason, devices such as sleds and rollers are installed on the side of the ground surface at the rear end of the loading platform.

However, the ground where the platform is lowered is often not leveled, and may be uneven or soft. As a result, with conventional sleds and rollers that are fixed to the loading platform, the load of the loading platform concentrates on a single line, and there is a possibility that the loading operation will be hindered by encroaching into the ground. .

Therefore, for example, Patent Document 1 discloses a cargo handling vehicle container in which a sled can swing about a swing shaft having an axis in a direction orthogonal to the lowering direction of the container. By making the sled swingable in this way, it is possible to move the loading platform smoothly even if the place where the container is to be unloaded is uneven or weak.

JP 2015-96359 A

However, in the cargo handling vehicle of Patent Document 1, although the sled can swing about the swing shaft, the sled and rollers are still configured as a single unit. As a result, there is a risk that the sled or roller will act on the ground intensively on one line segment and cause the ground to encroach.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicle transport vehicle in which the rear end of the loading platform is made more difficult to invade the ground.

Alternatively, the vehicle transport vehicle of the present invention includes a vehicle body having a traveling function, a loading platform mounted on the vehicle body for transporting the vehicle, the loading platform configured to be slidable with respect to the vehicle body, a crawler track device for supporting the rear end of the cargo bed when the cargo bed slides , the endless track device; a main beam member which is a beam member and has rollers; a first sub-beam member which is swingably supported by the main beam member and has a pair of rollers; a bogie mechanism comprising: a second sub-beam member swingably supported by the beam member, the second sub-beam member having a set of rollers; the rollers of the main beam member; One sub-beam member consists of a set of rollers, and a crawler belt wound around the set of rollers of the second sub-beam member.

A vehicle carrier of the present invention includes a vehicle body, a loading platform configured to be slidable relative to the vehicle body, and a crawler track device for supporting the rear end of the loading platform when the loading platform slides. With such a configuration, the load is applied in a distributed manner via the crawler track device, so that the rear end of the loading platform is even less likely to plunge into the ground.

It is explanatory drawing of the vehicle carrier in the state with which the loading platform was stored. (a) is a side view, (b) is a plan view, and (c) is a rear view. FIG. 4 is a side view of the vehicle carrier with the loading platform extended; 1 is a perspective view of a roller device of Example 1. FIG. 2 is a side view of the roller device of Example 1. FIG. FIG. 2 is an operation diagram of the roller device of Example 1; FIG. 11 is a perspective view of a crawler track device of Example 2; It is a side view of the endless track device of Example 2. FIG. FIG. 10 is an operation diagram of the endless track device of the second embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, Example 1 explained below demonstrates a vehicle carrier provided with a roller apparatus (40), and Example 2 demonstrates a vehicle carrier provided with a crawler track apparatus (60).

(overall structure)
First, referring to FIGS. 1(a) to 1(c), the overall construction of a vehicle carrier 1 according to an embodiment of the present invention will be described. As shown in FIG. 1, the vehicle transport vehicle 1 includes a vehicle body 10 having a running function, a cabin 11 arranged in front of the vehicle body 10, and a pair of left and right swing frames extending in the longitudinal direction of the vehicle body 10 behind the cabin 11. 12, 12 and a loading platform 20 slidably attached along the swing frames 12, 12. - 特許庁

A slide mechanism for the loading platform 20 will be briefly described. Although not shown, the rear ends of the swing frames 12, 12 are swingably attached to the rear end of the vehicle body 10 via a swing shaft. The front ends of the swing frames 12, 12 are connected to each other, and one end (rod side) of the telescopic cylinder is connected to this portion. A roller member that moves along the swing frames 12, 12 is attached to the other end (tube side) of the telescopic cylinder.

Further, a movable body having two upper and lower rollers is attached in the middle of the telescopic cylinder. Of these rollers, the upper roller rolls along the swing frames 12 , 12 , and the lower roller rolls along the sub-frame provided on the vehicle body 10 . Therefore, when the telescopic cylinder expands and contracts, the rocking frames 12, 12 are tilted by being pushed upward by the tilting moving body when the tilting moving body moves.

The loading platform 20 is attached to the telescopic cylinder via a double speed movement mechanism. Therefore, the loading platform 20 moves twice as much as the amount of expansion and contraction of the telescopic cylinder. In this manner, the loading platform 20 slides along the swing frame 12 while tilting backward.

In addition, as shown in FIG. 1(b), a winch for loading and unloading a vehicle (loaded vehicle) that cannot run by itself due to a failure or the like onto or from the loading platform 20 is provided on the front side of the loading platform 20. 13 are installed. During the loading operation of the vehicle, it is hooked near the front end of the vehicle to pull the vehicle forward.

Further, as shown in FIGS. 1(a) and 1(c), at the rear end of the loading platform 20, a road plate 30 is installed for loading and unloading a vehicle (vehicle to be loaded) onto the loading platform 20. It is The road board 30 is formed to have substantially the same width as the loading platform 20 . The base of the road board 30 is rotatably attached to the rear end of the loading platform 20, and can be opened and closed by a dedicated road board cylinder (not shown). In addition, when the road board 30 is of a manual type, it is also preferable to mount an operating force reduction spring.

The road board 30 is in a retracted state in which it is bent substantially at right angles to the loading platform 20 while the vehicle is being transported (moved) (see FIG. 1(a)). It is in a developed state in which the tip is in contact with the road surface (see FIG. 2). In the unfolded state shown in FIG. 2, the front end of the loading platform 20 is supported by the support legs 14. As shown in FIG. A rear end portion of the loading platform 20 of the vehicle carrier 1 of this embodiment is supported by a roller device 40 .

(Configuration of roller device)
Next, the configuration of the roller device 40 will be described. The roller device 40 is installed at the rear end of the loading platform 20 for loading the loaded vehicle, and transmits the load acting on the loading platform 20 to the ground. 3 and 4, the roller device 40 of this embodiment includes a first roller member 51, a second roller member 52 arranged behind the first roller member 51, and a first roller member 51 and a beam member 50 which rotatably supports the second roller member 52 and swings around a swing shaft 500 extending in the lateral direction of the vehicle.

More specifically, the beam member 50 is formed in an inverted V-shape or an inverted Y-shape branched at an angle of about 120 degrees, and the upper portion (near the base of the branched portion) pivots on the swing shaft 500. It is attached to the loading platform 20 so as to be able to swing freely. The swing shaft 500 extends in a direction perpendicular to the sliding movement direction of the loading platform 20 via a bracket installed on the loading platform 20 .

Therefore, the first roller member 51 and the second roller member 52, which are rotatably supported near the branched tip of the beam member 50, maintain their relative positional relationship, but one of them moves upward. If one moves downward, the other moves downward. In this manner, the first roller member 51 and the second roller member 52 swing freely, so that both are always in contact with the ground.

The first roller member 51 and the second roller member 52 are rotatably supported near the branched tip of the beam member 50 . The first roller member 51 and the second roller member 52 are each formed of synthetic resin in a columnar shape (short columnar shape), and a rotating shaft is inserted in the center. This rotating shaft extends in a direction parallel to the rocking shaft 500 described above. Therefore, when the loading platform 20 slides, the first roller member 51 and the second roller member 52 oscillate with respect to the loading platform 20 while maintaining their relative positions while rotating while contacting the ground. there is

Furthermore, the roller device 40 of this embodiment includes a damping device 80 that spans between the beam member 50 and the loading platform 20 . The damping device 80 is a so-called shock absorber and is composed of an elastic member (spring) 81 and a cylinder damper 82 . As described above, one end of the damping device 80 is attached to the bed 20 so that the vibration of the swingable beam member 50 can be damped.

Here, as shown in FIG. 1(c), the roller devices 40 composed of the bogie mechanism B are arranged at least at two locations near both ends in the width direction in order to stably slide the loading platform 20. preferably. However, it is not limited to this example, and it is preferable that the roller devices 40 are arranged at a total of three locations, one at the center in addition to two at both ends, and four or more roller devices 40 are arranged. It is also preferred to be located.

(Action)
Next, operation of the roller device 40 will be described with reference to FIGS. 4 and 5. FIG. As described above, the rear end of the loading platform 20 is supported by the roller device 40 in the unfolded state shown in FIG. Similarly, the rear end of the loading platform 20 is supported by the roller device 40 during deployment. That is, while the loading platform 20 is tilting and sliding, the rear end of the loading platform 20 transmits the load to the ground via the roller device 40 .

In the case of a flat ground surface G1 as shown in FIG. 4, the beam member 50 hardly swings, and both the first roller member 51 and the second roller member 52 are in contact with the ground surface G1. Therefore, the loading platform 20 can be smoothly slid. Vibrations associated with the sliding movement of the loading platform 20 are absorbed and suppressed by the damping device 80 . The roller device 40 can prevent penetration into the ground by widening the effective ground contact area on the graded road surface G1 by the first roller member 51 and the second roller member 52 in this way.

On the other hand, in the case of an uneven road surface G2 having unevenness as shown in FIG. 5, the beam member 50 swings greatly according to the unevenness of the uneven road surface G2. Both the first roller member 51 and the second roller member 52 are grounded on the uneven road surface G2 by the swinging motion of the beam member 50 . Therefore, the loading platform 20 can be smoothly slid. The damping device 80 absorbs and suppresses vibrations caused by sliding movement of the loading platform 20 and vibrations caused by unevenness of the road surface.

Furthermore, since the first roller member 51 and the second roller member 52 are separated from each other in the sliding movement direction of the loading platform 20 via the beam member 50, even if there are small irregularities or steps on the uneven road surface G2 during movement, While both roller members 51 and 52 are in contact with the ground, it can be overcome. The roller device 40 can thus prevent penetration into the ground by widening the effective ground contact area on the uneven road surface G2 by the first roller member 51 and the second roller member 52 .

(effect)
Next, the effects of the vehicle carrier 1 of the present embodiment will be listed and explained.

(1) As described above, the vehicle transport vehicle 1 of this embodiment includes a vehicle body 10 having a traveling function and a loading platform 20 mounted on the vehicle body 10 for transporting the vehicle. and a roller device 40 for supporting the rear end of the loading platform 20 when the loading platform 20 slides. The roller device 40 includes a beam member 50 swingably supported around a swing shaft 500 perpendicular to the sliding movement direction of the loading platform 20, and a first roller rotatably supported by the beam member 50. The bogie mechanism B includes a member 51 and a second roller member 52 rotatably supported by the beam member 50 . With such a configuration, the load is applied in a distributed manner via the bogie mechanism B, so that the rear end of the loading platform 20 is further prevented from intruding into the ground.

That is, since the roller device 40 of the present embodiment swings by mounting the bogie mechanism B, the two roller members 51 and 52 are always grounded, and the effective ground contact area can be widened. can. In this manner, the roller device 40 can prevent the two roller members 51 and 52 from intruding into the ground even if the ground is uneven or soft.

(2) Further, by further providing the damping device 80 that suppresses the swinging motion of the beam member 50 around the swing shaft 500, the vibration of the beam member 50 during the sliding movement of the loading platform 20 can be absorbed and suppressed. .

A support structure for the loading platform 20 that is different from that of the first embodiment will be described below with reference to FIGS. 6 to 8. FIG. The same or equivalent parts as those described in the first embodiment will be described with the same reference numerals. Further, in the perspective view of the crawler track device 60 shown in FIG. 6, the crawler belt (73) is omitted in order to explain the configuration of the bogie mechanism B in an easy-to-understand manner.

(overall structure)
A vehicle carrier 1 of the present embodiment includes a vehicle body 10, a cabin 11, swing frames 12, 12, and a loading platform 20, in substantially the same manner as in the first embodiment. A rear end portion of the loading platform 20 of the vehicle carrier 1 of this embodiment is supported by a crawler track device 60 .

(Construction of endless track device)
Next, the configuration of the endless track device 60 will be described. The crawler track device 60 is installed at the rear end of the loading platform 20 for loading the loaded vehicle, and transmits the load acting on the loading platform 20 to the ground. 6 and 7, the crawler track system 60 of this embodiment includes a bogie mechanism B composed of a main beam member 70, a first sub-beam member 71 and a second sub-beam member 72, The endless track crawler belt 73 is composed of.

More specifically, the main beam member 70 of the bogie mechanism B is composed of two elongated plate elements and a shaft element connecting them. freely installed. The swing shaft 700 extends in a direction perpendicular to the sliding movement direction of the loading platform 20 via a bracket installed on the loading platform 20 . At the center of the main beam member 70, a roller 701 is further installed with the swing shaft 700 as a rotation axis. Furthermore, a first sub-beam member 71 and a second sub-beam member 72, which will be described later, are swingably supported at the front and rear ends of the main beam member 70, respectively.

Furthermore, in the crawler track system 60 of this embodiment, a damping device 80 is bridged between the main beam member 70 and the loading platform 20 . The damping device 80 is a so-called shock absorber and is composed of an elastic member (spring) 81 and a cylinder damper 82 . As described above, one end of the damping device 80 is attached to the bed 20 so that it can dampen the vibration of the main beam member 70 which is configured to be able to oscillate.

The first sub-beam member 71 is composed of two isosceles triangular plate elements with rounded corners and a shaft element connecting them. is oscillatably attached to the The swing shaft 710 extends parallel to the swing shaft 700 of the main beam member 70 in a direction perpendicular to the direction of slide movement of the loading platform 20 . Two rollers 711 and 712 are further supported on the left and right lower portions of the first sub-beam member 71 . The rotation axis of the wheels 711 and 712 of the first sub beam 71 is parallel to the rotation axis of the wheel 701 of the main beam 70 .

The second sub-beam member 72, substantially similar to the first sub-beam member 71, is composed of two isosceles triangular plate elements with rounded corners and a shaft element connecting them. It is attached to the rear side of the main beam member 70 via 720 so as to be able to swing freely. The swing shaft 720 extends parallel to the swing shaft 700 of the main beam member 70 and in a direction perpendicular to the sliding movement direction of the loading platform 20 . Two rollers 721 and 722 are further supported on the left and right lower portions of the second sub-beam member 72 . The rotation axis of the wheels 721 and 722 of the second sub-beam 72 is parallel to the rotation axis of the wheel 701 of the main beam 70 .

A crawler belt 73 is wound around the five wheels 701, 711, 712, 721, and 722 described above. The endless track crawler belt 73 is formed in a belt shape from a material such as rubber, and preferably has grooves along the center line for fitting the rollers 701 to 722 . Although not shown, the crawler belt 73 preferably has biasing means such as a spring in order to maintain proper tension.

(Action)
Next, the operation of the endless track device 60 will be described with reference to FIGS. 7 and 8. FIG. In this embodiment, the rear end portion of the loading platform 20 transmits the load to the ground via the crawler track device 60 while the loading platform 20 is tilting and sliding.

In the case of a flat leveled road surface G1 as shown in FIG. Wheels 711 to 722 are in contact with the leveled road surface G1. Therefore, the loading platform 20 can be smoothly slid. Vibrations associated with the sliding movement of the loading platform 20 are absorbed and suppressed by the damping device 80 . The crawler track device 60 can thus prevent penetration into the ground by making surface contact with the graded road surface G1 via the crawler belt 73 and increasing the effective ground contact area.

On the other hand, in the case of an uneven road surface G2 having unevenness as shown in FIG. 8, the main beam member 70 swings greatly according to the overall unevenness of the uneven road surface G2. As the main beam member 70 swings, the first sub-beam member 71 and the second sub-beam member 72 also swing according to small irregularities, so that both of them are always in contact with the uneven road surface G2. Therefore, the loading platform 20 can be smoothly slid. The damping device 80 absorbs and suppresses vibrations caused by sliding movement of the loading platform 20 and vibrations caused by unevenness of the road surface.

Furthermore, since the first sub-beam member 71 and the second sub-beam member 72 are separated from each other in the sliding movement direction of the loading platform 20 via the main beam member 70, the uneven road surface G2 during movement has a convex portion. Even if there is a step, the four rollers 711 to 722 are in contact with the ground through the endless track crawler 73, so that the step can be overcome. The crawler track device 60 can thus prevent intrusion into the ground by making surface contact with the uneven road surface G2 via the crawler belt 73 and increasing the effective ground contact area.

(effect)
Next, the effects of the vehicle carrier 1 of the present embodiment will be listed and explained.

(1) As described above, the vehicle transport vehicle 1 of this embodiment includes a vehicle body 10 having a traveling function and a loading platform 20 mounted on the vehicle body 10 for transporting the vehicle. and a crawler track device 60 for supporting the rear end of the loading platform 20 when the loading platform 20 slides. With such a configuration, a load is applied through surface contact via the endless track device 60, so that the rear end of the loading platform 20 is further prevented from intruding into the ground.

(2) Here, the crawler track device 60 includes; A first sub-beam member 71 swingably supported by the beam member 70 and having a pair of rollers 711 and 712 and swingably supported by the main beam member 70. a bogie mechanism B comprising a second sub-beam member 72 having a pair of rollers 721 and 722; the rollers 701 of the main beam member 70 and the first sub-beam member. a set of rollers 711, 712 of the second sub-beam member 72; With this configuration, the bogie mechanism B oscillates to disperse the load, so that the rear end of the loading platform 20 is further prevented from intruding into the ground.

That is, since the crawler track device 60 of the present embodiment swings by mounting the bogie mechanism B, the lower four rollers 711 to 722 are all always grounded via the crawler belt 73. , and the effective ground contact area can be widened. In this manner, the crawler track system 60 can prevent the crawler belt 73 from invading into the ground even if the ground is uneven or soft.

(3) In addition, by further providing the damping device 80 that suppresses the swinging motion of the main beam member 70 around the swing shaft 700, the vibration of the main beam member 70 during the sliding movement of the loading platform 20 can be absorbed and suppressed. can be done.

Other configurations and effects are substantially the same as those of the above-described embodiment, so description thereof will be omitted.

Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes to the extent that they do not depart from the gist of the present invention can be applied to the present invention. included.

For example, in the first and second embodiments, the roller device 40 and the endless track device 60 are further provided with the damping device 80, but the present invention is not limited to this, and the damping device 80 may be omitted.

In addition, in the first and second embodiments, the case where the bogie mechanism B is used alone has been described, but the present invention is not limited to this. A rocker bogie mechanism is also possible.

1: vehicle carrier; 10: car body; 20: loading platform; 30: road board;
40: roller device;
50: beam member; 500: swing shaft; 51: first roller member; 52: second roller member;
60: Track device;
70: Main beam member; 700: Swing shaft; 701: Wheel;
71: first sub-beam member; 710: rocking shaft; 711: wheel; 712: wheel;
72: Second sub-beam member; 720: Swing shaft; 721: Wheel; 722: Wheel;
73: track tracks;
80: attenuation device;
B: bogie mechanism;

Claims (2)

a vehicle body having a running function;
a loading platform mounted on the vehicle body for carrying the vehicle, the loading platform configured to be slidable relative to the vehicle body;
a crawler track device that supports the rear end of the loading platform when the loading platform slides;with
the tracked device;
A main beam member, which is a main beam member swinging about a swing axis perpendicular to the sliding movement direction of the cargo bed and has rollers, and a first sub-beam member swingably supported by the main beam member. a first sub-beam member having a set of rollers, and a second sub-beam member swingably supported by the main beam member and having a set of rollers. a bogie mechanism consisting of;
a track wheel of the main beam member, a set of track wheels of the first sub-beam member, and a crawler belt wound around the set of track wheels of the second sub-beam member; vehicle carrier. 2. The vehicle carrier according to claim 1 , further comprising a damping device for suppressing rocking of said main beam member about said rocking axis.

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