JPH0635792Y2 - Vehicle tractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an improvement of a vehicle loading tractor capable of loading a vehicle and towing a trailer for loading the vehicle.

[Outline of device]

The present invention, in a vehicle loading tractor capable of loading a vehicle on itself and towing a trailer, divides a vehicle loading deck into a front portion and a rear portion so that both can swing relative to each other as necessary. In addition, when the trailer is towed, the front deck of the front deck is pivotally supported in front of the tractor by a pedestal that is erected on the tractor. It is designed so as not to interfere with the vehicle.

[Conventional technology]

As a conventional technique, for example, as shown in Japanese Utility Model Publication No. 60-166647, the vehicle loading deck 1 of the tractor is divided into two as shown in FIGS. 6A and 6B, and the length is extremely small. In some cases, the short front main deck 2 is fixed on a pedestal 4 which is erected on the tractor 3, and the rear vertical deck 5 has its front end pivotally supported above the tractor 3.

[Problems to be solved by the device]

By the way, if the deck 1 is configured as described above, the rear vertical deck 5 pivotally supported in front of the tractor 3 is necessarily much longer than the front main deck 2. If the pedestal 4 is configured as shown in FIGS. 6A and 6B to support the rear portion of the long vertical deck 5, the span between the front pillar 4a and the rear pillar 4b is necessarily increased. .

Therefore, as shown in FIG. 6A, for example, when the passenger car 6 is loaded on the trailer, almost no problem occurs. However, as shown in FIG. 6B, for example, a vehicle 8 having a large amount of forward overhang is mounted on the trailer 7. When the vehicle is loaded on the vehicle, the vertical deck 5 and the pedestal 4 interfere with each other as shown in the figure, making it difficult to effectively use the space between the tractor 3 and the trailer 7, and the loading efficiency of the vehicle is significantly reduced.

In view of the above points, the present invention provides a vehicle loading tractor in which the loading efficiency of the vehicle is not significantly reduced even when the loading device for the vehicle is provided on the tractor.

[Means for Solving the Problems]

The present invention relates to a vehicle loading tractor capable of loading a vehicle and towing a trailer for loading the vehicle, with side pillars each standing up from the vicinity of the left and right side members and having guide surfaces, and extending forward from each of these side pillars. A mount having at least a vertical beam having a bearing at the front end,
A front deck supported by the bearings and swingable up and down, a rear deck whose front end is connected to the rear end of the front deck by a pin, and a guide surface of the side pillar. And a vertically movable slide block, a link pivotally connecting the slide block and the intermediate portion of the rear deck, a drive mechanism for driving the slide block, the front deck and the rear deck. The present invention relates to a vehicle-mounted tractor including a clamp mechanism that prevents relative swinging between the two at a substantially linear position and integrates the two.

[Operation] Therefore, since the front deck and the rear deck of the present invention are configured so as to divide the vertical deck 5 of the prior art into almost two parts, the rear deck is bent with respect to the front deck, and thereby the rear deck is formed. It is possible to sufficiently prevent the rearward protrusion of the.

Further, since the rear end of the rear deck is supported by a side pillar corresponding to the front pillar 4a of the related art, that is, a side pillar having a guide surface, via a link, the side corresponding to the rear pillar 4b of the related art. Even if the columns are provided, the span between the side columns can be sufficiently reduced, and the pedestal will not interfere with the vehicle loaded on the trailer.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the tractor 11 supports the front end of a trailer 13 on which a vehicle 12 is loaded and pulls the trailer 13. Further, a frame 14 is provided on the tractor 11, and the vehicle 12 can be loaded also on the tractor 11. The vehicle 12 is loaded on the deck 15 provided on the gantry 14 by using the upper deck 16 of the trailer 13.

The base frame 19 of the gantry 14 is assembled in a box shape as shown in FIG. 2 and is fixed on the underframe 20 of the tractor 11. Further, a pair of left and right side columns 22 is vertically provided upright from the front corner position of the box-shaped base frame 19, in other words, near the side member 21 of the tractor 11. Further, a pair of left and right slanted columns 23 inclined forward from the rear corner position of the box-shaped base frame 19 are erected. The side pillars 22 and the oblique side pillars 23 are joined at their upper ends by vertical beams 26.

Next, a vertical beam 27 extending forward is fixed to the upper end of the side pillar 22, and the rear end thereof is fixed to the side pillar 22. Also this vertical beam 27
Is reinforced by an oblique member 28 provided between the front end of the vertical beam 27 and the side column 22. A bearing 29 is provided at the free end of the vertical beam 27 to pivotally attach the front portion of the deck 15.

That is, in the bearing 29, as shown in FIG. 3 (C), a bolt 31 having a large-diameter pin portion 31a is attached to a small-diameter square screw portion 3a.
It is fixed to the vertical beam 27 with 1b. The side beam 15c of the deck 15 is provided with a pin hole 15d, and the pin portion 31a of the bolt 31 is loosely fitted in the pin hole 15d.

The deck 15 includes a front deck 15a and a rear deck 15b, and the front portion of the front deck 15a is supported by the bearing 29 as described above. Further, the rear end of the front deck 15a and the front end of the rear deck 15b are connected by a pin 30 so that they can swing with respect to each other.

Furthermore, the above swing around the pin 30 is prevented, and the front deck 15
In order to linearly join the a and the rear deck 15b to each other as shown in FIG. 2, the front deck above the joining position is integrated.
15a and the rear deck 15b are provided with pin holes 33, and the pin 34
Is inserted.

That is, as shown in FIG. 3 (B), the front deck 15a is provided with two parallel brackets at the rear end thereof, and the pivot portion of the rear deck 15b is inserted between these brackets. Further, the pin 34 is a pin with a ring and can be easily attached and detached. The clamp mechanism composed of the pin 34 and the pin hole 33 can be replaced with another known fastener.

Next, as shown in FIG. 3 (D), the pair of left and right side columns 22 has a hollow rectangular cross section in which slits 35 are provided on the surfaces facing each other, and the slide block 37 has the inner surface of this cross section as the guide surface 36.
Will be guided to side pillar 22.

This slide block 37 is vertically long as shown in FIG. 3 (A) so that it can be smoothly guided by the guide surface 36. The left and right slide blocks 37 are connected and fixed to each other by a connecting member 40 as shown in FIG. 3 (D).
Further, a pair of parallel brackets 42 are provided on the connecting member 40 so as to project rearward, and a pin hole 42a is horizontally provided.

Next, as shown in FIG. 2, the slide block 37 and the rear deck 15b are pivotally connected by a link 43.
That is, as shown in FIG. 3 (A), a pair of mutually parallel brackets 44 project downward and are provided on the lower surface of the left and right side beams 15e of the rear deck 15b and in the middle portion of the rear deck 15b. The hole 44a is provided horizontally. And the link 43 provided with pin holes 43a at both ends, pin holes 43a and 42a,
And 43a and 44a are connected to the rear deck 15b and the connecting member 40 by the pins 47 respectively inserted therein.

Next, a cylinder device 48 for driving the slide block 37 is provided along the side column 22 near the rear of the side column 22 as shown in FIG. 2, and the lower end of this cylinder device 48 is pin-connected to the pedestal 14. Has been done. Further, pulleys 49a and 49a are provided between the tip of the piston 48a of the cylinder device 48 and the tip of the side column 22.
b are provided respectively.

One end 50 of wire 50 that winds around these pulleys 49a and 49b
The a is attached to the vertical beam 26 of the pedestal 14, and is wound around the first pulley 49a from below and the second pulley 49b from above, and then attached to the upper surface of the slide block 37. Therefore, when the cylinder device 48 is extended, the first pulley 49a rises and the slide block 37 descends. On the contrary, if the cylinder device 48 is contracted, the slide block 37 moves up. A roller chain may be used for the wire 50. Further, the slide block 37 has a pin 55 inserted through a hole provided in the front and rear direction of the side column 22 as shown in FIGS. 2 and 3 (A), and is prevented from descending.

Next, as shown in FIG. 2, a pillar 51 is provided in parallel with the side pillar 22 so as to be close to the front of the side pillar 22 and both ends thereof are fixed to the vertical beam 27 and the diagonal member 28, respectively. From
A deck receiver 53 that can swing horizontally is provided so as to project.

That is, as shown in FIG. 3 (E), the base of the deck receiver 53.
53a is pivotally supported up and down by a pair of upper and lower brackets 54 that are parallel to each other and project from the column 51. When not in use, the 53a fits within the plane formed by the vertical beam 27 and the diagonal member 28 as shown by the solid line in the figure. During use, it is swung toward the center of the vehicle to a position orthogonal to this plane, and the front deck is shown as indicated by the one-dot chain line in the figure.
The side beam 15c of 15a can be supported.

Next, the operation of the vehicle loading tractor constructed as described above will be described. When it is necessary to tilt the deck 15 after loading the vehicle 12 on the deck 15 as shown in FIG. Is selected, the pin 55 is inserted, and the cylinder device 48 is extended.

As a result, since the slide block 37 descends due to this extension, the rear portion of the deck 15 is pulled by the link 43 and descends, and as a result, the deck 15 swings clockwise about the bearing 29 in FIG. The gradient increases.

Thus, if the extension of the cylinder device 48 is stopped at the position where the slide block 37 abuts on the pin 55, the deck 15 is held at a desired slope by the slide block 37 which is prevented from descending.

Next, when it is not necessary to mount the vehicle 12 on the deck 15 and it is necessary to prevent the deck 15 from interfering with the vehicle 12 loaded on the trailer 13, the deck receiver 53 is provided in FIG. 3 (E). While swinging to the position of the one-dot chain line of
To make the rear deck 15b swingable with respect to the front deck 15a. Further, similarly to the above case, the hole of the side pillar 22 is selected and the pin 55 is inserted into the side pillar 22.

Next, when the cylinder device 48 is extended, the deck 15 swings clockwise around the bearing 29 in FIG. 2 as the slide block 37 descends, but the rear portion of the deck 15a hits the deck receiver 53. Upon contact, the front deck 15a is prevented from swinging, only the rear deck 15b continues to swing, and the rear deck 15b enters the state shown in FIG.

Therefore, when the extension of the cylinder device 48 is stopped at the position where the slide block 37 abuts the pin 55, the rear deck 15b is held at the position shown in FIG. 4 and interferes with the vehicle 12 loaded on the trailer 13. Never. Deck 15
To restore the old state to the old state, the above operations may be performed in almost the reverse order.

Next, when tilting the cab 56, the deck bridge 53 is swung to the position indicated by the alternate long and short dash line in FIG.
Select the hole that allows the above tilt and pin 55 to the side post.
Insert through the 22 holes.

Next, the cylinder device 48 is extended to lower the rear portion of the deck 15, and at the position where the deck 15 is brought into contact with the deck receiver 53, the bolt 31
And the cylinder device 48 is further extended to bring the slide block 37 into contact with the pin 55, as shown in FIG.
The deck 15 is supported by the deck bridge 53, the link 43, and the protrusion 17 (protruding on the deck 15) that is in contact with the link 43, and the front portion of the deck 15 rises, so that the cab 56 is as illustrated. Can be tilted.

The present invention has been described above with reference to one embodiment. However, the above embodiment is not intended to limit the present invention, and various modifications can be made based on the technical idea of the present invention. For example, in the case of the present invention, the cylinder device 48 is provided parallel to the side column 22, but
It can also be provided parallel to the 14 vertical beams 27.

[Effect of device]

Since the present invention is configured as described above, the space between the tractor and the trailer can be effectively used, and compared to the conventional vehicle-mounted tractor, it can fully cope with the diversification of the loaded vehicle type. Therefore, the loading efficiency of the vehicle is significantly improved.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, and FIG. 1 is a side view of a vehicle-mounted tractor for pulling a trailer,
Fig. 2 is an enlarged side view of the same vehicle-mounted tractor, Fig. 3 is a detailed view of each part of the pedestal and deck, Fig. 4 is a side view of the pedestal when the deck is bent, and Fig. 5 is a case where the cab is tilted. FIG. 6A and 6B are side views of a conventional vehicle-mounted tractor that pulls a trailer. In the reference numerals used in the drawings, 12 ... vehicle 13 ... trailer 14 ... frame 15 ... deck 15a ... front deck 15b ... rear deck 21 ... side member 22 ... side pillar 27 ... vertical Burr 29 …… Bearing 30 …… Pin 34 …… Pin (clamping mechanism) 36 …… Guide surface 37 …… Slide block 43 …… Link 48 …… Cylinder device (driving mechanism).

Claims (1)

[Scope of utility model registration request] 1. A vehicle loading tractor capable of loading a vehicle and towing a trailer for loading a vehicle, comprising side pillars each standing up from the vicinity of left and right side members and having guide surfaces, and extending forward from each of these side pillars. A pedestal having at least a vertical beam with a bearing at its front end, a front deck whose front portion is supported by the bearing and can swing up and down, and a rear end of this front deck with a pin at its front end. A rear deck that is connected, a slide block that can be moved up and down by being guided by the guide surface of the side pillar, a link that pivotally connects this slide block and an intermediate portion of the rear deck, and a drive unit that drives the slide block. The drive mechanism for driving the front deck and the rear deck are located at a position where they are substantially linear, and the relative swing between them is prevented to integrate them. A vehicle-mounted tractor equipped with a pump mechanism.