JP2961276B2 - Trailer equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a trailer device used for transporting, for example, agricultural work machines, crops, and other heavy objects.

[Prior Art] Conventionally, as this type of trailer, Japanese Utility Model Publication No. 43-24001, Japanese Utility Model Publication No. 47-19617, and Japanese Utility Model Publication No. Sho 62-16360 are known.

This conventional structure has been proposed in which a vehicle frame is connected to a tractor, and a mounting table is provided on the vehicle frame so as to be tiltable rearward.

[Problems to be solved by the invention] However, in the case of these conventional structures, there are inconveniences in terms of stable transportation, loading, unloading, etc., for transporting large agricultural work machines, a large amount of crops, and other heavy items. doing.

Means for Solving the Problems The object of the present invention is to solve these inconveniences, and the gist of the present invention is to connect a vehicle frame to a tractor and attach a mounting table to the vehicle frame in the front-rear direction in the traveling direction. An operating mechanism is provided so as to be movable and tiltable rearward, moves the mounting table and tilts the mounting table rearward with the rearward movement of the mounting table, and moves to the chassis frame as the operating mechanism. The member is movably disposed in the front-rear direction, a moving cylinder is erected between the moving member and the chassis frame, an undulating link is pivotally mounted between the moving member and the mounting table, and A buffer body which is capable of extending and contracting with the link for raising and lowering and generates a resistance action at least at the time of extension operation is pivotally mounted, and furthermore, a stopper member for a retreat limit and a forward limit of the mounting table is disposed on the underframe. Trailer device It is in.

[Operation] The underframe is towed by the tractor, and the mounting table on the underframe tilts rearward as the operating mechanism moves rearward in the traveling direction.

1 to 6 show an embodiment of the present invention, wherein 1 is a tractor, 2 is an undercarriage frame, which is formed by frame welding with a square pipe material, and a bottom surface of an undercarriage frame 2. The front end of a square pipe-like connecting rod 3 is connected to the drawbar 4 at the rear of the tractor 1 by pins 5 and 6 at the center, and wheels 8 are disposed on the left and right sides of the rear of the chassis frame 2 by bearings 7.

Reference numeral 9 denotes a mounting table, in this case, a front plate 10, a side plate 11, and a rear plate.
12 and a bottom plate 13 so as to form a box with a bottom as a whole. The side plate 11 is detachable and freely foldable horizontally, and the rear plate 12 is freely foldable rearward by a pin 14. Rollers 15 are mounted on both sides of the front of the vehicle frame, the mounting plate 16 is welded to the upper surface on the front side of the chassis frame 2, and the mounting rollers 17 are mounted at four rear portions of the chassis frame 2, and at two rear portions of the chassis frame 2. The stopper member 18 is attached, and the rolling table 15 is freely movable in the front-rear direction by rolling contact between the rolling roller 15 and the mounting plate 16 on the upper surface of the chassis frame 2 and between the mounting roller 17 and the bottom surface of the mounting table 9. Can be tilted rearward about a tilting center O, which is a contact position between the mounting table 9 and the lower surface of the mounting table 9, and the side surface of the mounting member 9 a
The side surfaces of the stopper member 18 and the 16 side surfaces, the side surfaces of the component members 9a, and the side surfaces of the stopper member 18 are arranged so as to prevent lateral displacement.

Reference numeral 19 denotes an operation mechanism. The base of a moving cylinder 20 is pivotally connected to the rear part of the underframe 2 by pins 21, and guide plates 22 having a U-shaped cross section are attached to both front sides of the underframe 2. A guide roller 24 is mounted on both sides of the guide plate 24, and a movable member 23 is provided so as to be movable in the front-rear direction by rolling engagement between the concave groove of the guide plate 22 and the guide roller 24, and the rod 20a of the movable cylinder 20 is 20b, connecting pieces 25 are projected downward on both sides of the rear part of the moving member 23, and the connecting pieces 25 and the components of the mounting table 9 are formed.
An up / down link 26 is pivotally mounted between the front and back of the mounting table 9 and the up / down link 26 by a pin 27. 29, In this case, connect the hydraulic shock absorber with pin 30
A pivot shaft is mounted on the mounting table 9 and a stopper shaft 32 is mounted on the mounting table 9.
And a stopper member 33 that can abut against the stopper shaft 32 is attached to the rear portion of the underframe 2, and the mounting table 9 is mounted on the mounting table 9.
A stopper pin 34 that can abut on the stopper member 18 at the end of the advance is protrudingly provided.

Reference numeral 35 denotes a lock mechanism. In this case, a locking pin 36 is provided at the front of the mounting table 9, and the locking pin 36 is configured to be detachable from the front of the underframe 2.

Reference numeral 37 denotes a grounding leg, which is provided at a rear portion of the underframe 2 by a leg extending / contracting mechanism 38 and supports the mounting table 9.
A hydraulic pump 39 drives the moving cylinder 20.

In this embodiment, since the undercarriage frame 2 is towed by the tractor 1 to carry the article W on the mounting table 9, the lock mechanism 35 is removed, and the operation is performed in the state shown in FIGS. When the moving cylinder 20 of the mechanism 19 is pulled, the rod
20a pulls the moving member 23, the moving member 23 moves backward for the rolling operation of the concave groove of the guide plate 22 and the guide roller 24, and the backward movement of the moving member 23 causes the mounting table 9 to move through the undulating link 26. Moves backward for the rolling operation of the rolling roller 15, and as a basic operation, the mounting table 9 stops when the stopper shaft 32 comes in contact with the stopper member 33, and the moving member 23 is further moved rearward by the moving cylinder 20. The link 26 for raising and lowering gradually rises and swings, the mounting table 9 tilts backward with the contact point between the mounting roller 17 and the lower surface of the mounting table 9 as a fulcrum, and the buffer body 29 extends while applying resistance to the mounting table. The tilt of the mounting table 9 is reduced, and the mounting table 9 tilts rearward while moving backward as shown in FIGS. 5 and 6.

When the moving cylinder 20 of the operating mechanism 19 is pushed in the state shown in FIGS. 5 and 6, the rod 20a pushes the moving member 23, and the moving member 23 moves forward. The table 9 moves forward via the link 26 while being tilted rearward, the stopper shaft 32 is separated from the stopper member 33, the stopper pin 34 contacts the stopper member 18, and the link 26 for raising and lowering gradually swings. The buffer 29 is reduced and the mounting table 9 is tilted forward about the tilting center O, which is the contact position between the mounting roller 17 and the lower surface of the mounting table 9, as a fulcrum.
Is in the horizontal state, and is in the original position shown in FIGS. 1 and 4.

Therefore, as the operating mechanism 19, the moving member
23 is movably disposed in the front-rear direction, a moving cylinder 20 is mounted between the moving member and the chassis frame, and an undulating link 26 is pivotally mounted between the moving member 23 and the mounting table 9. And a buffer 29 which is capable of extending and contracting between the mounting table and the link 26 for raising and lowering at least when the extension operation is pivotally mounted. And the stopper members 33 and 18 are arranged, so that the mounting table 9 can be held in a horizontal state when transporting the transported object W,
The loading mechanism 9 can be tilted rearward by the operating mechanism 19 when loading and unloading the transported object W onto and from the mounting table 9. The tilting angle can be made small and the buffer body 29 expands and contracts while providing resistance, alleviates the tilting of the mounting table 9, and can carry in and out a large agricultural work machine and a large amount of crops stably. In addition, the structure of the operating mechanism 19 can be simplified.

[Effects of the Invention] As described above, in the present invention, as an operating mechanism, a movable member is disposed on a chassis frame so as to be movable in the front-rear direction, and a movable cylinder is provided between the movable member and the chassis frame. An undulating link is pivotally mounted between the member and the mounting table, and a shock-absorbing member that is capable of expanding and contracting between the mounting table and the undulating link and that generates a resistance action at least during the extension operation is pivotally mounted. Since the carriage frame is provided with stopper members for the retreat limit and the forward limit of the mounting table, the mounting table can be held in a horizontal state when transporting the transported article, and the transported article on the mounting table can be held. At the time of loading and unloading, the mounting table can be tilted backward by the operating mechanism, and the mounting table tilts with the movement backward in the traveling direction, so that the mounting table can be efficiently tilted and the tilt angle can be reduced. It expands and contracts while giving resistance, The tilting can be alleviated to stably carry in and out a large agricultural work machine and a large amount of crops, and the structure of the operating mechanism can be simplified.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an overall side view, FIG. 2 is a plan view thereof, FIG. 3 is a transverse sectional view thereof, FIG. 4 is a partial side sectional view thereof, and FIG. The figure is a side sectional view of the operating state, and FIG. 6 is an overall side view of the operating state. 1 ... Tractor, 2 ... Underframe, 9 ... Placement table, 18 ...
Stopper member, 19: Actuating mechanism, 20: Moving cylinder, 23: Moving member, 26: Link for undulation, 29: Shock absorber, 33: Stopper member.

Claims (1)

(57) [Claims] An undercarriage is connected to a tractor, and a mounting table is disposed on the undercarriage so as to be movable in the forward and backward directions of travel and tiltable rearward, and to move the mounting table and to move the mounting table backward. An operating mechanism for tilting the mounting table backward is provided, and as the operating mechanism, a moving member is disposed on the underframe so as to be movable in the front-rear direction, and a moving cylinder is provided between the moving member and the underframe. Erection, an undulating link is pivotally mounted between the moving member and the mounting table, and a shock-absorbing body that is expandable and contractible between the mounting table and the undulating link and generates a resistance action at least during the extension operation is pivotally mounted. A trailer device further comprising a stopper member for a retreat limit and a forward limit of the mounting table provided on the underframe.