JP2588643B2 - Lorry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truck capable of loading a load by lowering a body on the ground.

[0002]

2. Description of the Related Art As a lorry, recently proposed by the present applicant, as shown in FIGS. 10 (A), 10 (B) and 10 (C), a body is lowered horizontally on the ground to load cargo. There is something. This lorry is first mounted on a vehicle body composed of a chassis frame 61 and a sub-frame 62 shown in FIG. 10A, and has a lift frame 63 having a bent portion 66 bent downward at the rear end side, and a lift cylinder 71 As shown in FIG. 10B, the hinge roller 72 attached to the rear end of the vehicle body is moved downward by the lift frame driving means including the Tilt while supporting. Then, the bending portion 6 of the lift frame 63
6 comes into contact with the ground or is located very close to the ground. Thereafter, the body 65 is slid rearward along the lift frame 63 by the body driving means provided on the body 65. Further, the front end of the body 65 is slid down along the bent portion 66 on the rear side of the lift frame 63, and as shown in FIG. 10C, the body 65 is lowered substantially horizontally on the ground.

The body 65 is slid by a structure shown in FIG. That is, a chain 79 having one end fixed to the front end of the lift frame 63 and the other end fixed to the rear end of the lift frame 63.
Are connected to a driving sprocket 78 provided at the front end of the body 65 and idlers 80, 8 pivotally supported by the body 65.
It is wound around one. The sprocket 78 is driven by a hydraulic motor (not shown) fixed to the body 65. Therefore, by driving the sprocket 78 along the chain 79 by driving the hydraulic motor, the body 65 can slide over the entire lift frame 63 including the bent portion 66.
The sprocket 78, the idlers 80, 81, the chain 79, and the hydraulic motor constitute a body driving means.

[0004] Next, the luggage is loaded on the body 65 that has been lowered horizontally on the ground and secured. Thereafter, the body driving means is driven to move the body 65 to the lift frame 6.
3 is raised along the bent portion 66, and the body 65 is slid forward along the lift frame 63. Thereafter, the lift frame 63 is returned to a horizontal state by the lift frame driving means.

[0005]

However, in the above-mentioned truck, there is a problem that the front end of the body may be separated from the lift frame when traveling and when the lift frame is tilted, which is dangerous.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lorry which can prevent the front end of the body from floating and separating from the lift frame.

[0007]

In order to achieve the above object, a truck according to the present invention comprises a lift frame mounted on a vehicle body to be tiltable and having a bent portion bent downward at a rear end side; Lift frame driving means for tilting a frame, a body slidably mounted on the lift frame, body driving means for sliding the body relative to the lift frame, and a swingably provided at a front portion of the body. A bracket having a locking portion that can be locked to the lift frame from below, a guide roller provided on the bracket and rolling on the lift frame, and sandwiching the lift frame from above and below with the locking portion; It is characterized by having.

[0008]

The locking portion of the bracket locks the front portion of the body to the lift frame from below, and the guide roller provided on the bracket and rolling on the lift frame and the locking portion of the bracket are formed. Since the lift frame is interposed, the front end of the body is prevented from floating and separating from the lift frame.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. 1A and 1B, 1 is a chassis frame, 2 is a subframe, 3 is a lift frame, and 5 is a body. The chassis frame 1 and the sub-frame 2 constitute a vehicle body. The lift frame 3 has a bent portion 6 bent obliquely downward at the rear end side. As shown in FIG. 2, the lift frame 3 can slide and tilt along a hinge roller 7 provided below the rear end of the sub frame 2. The other end of the lift arm 8 having one end pivotally attached to the lower side of the subframe 2 is pivotally attached to the front end side of the lift frame 3.
The other end of a lift cylinder 11 whose one end is pivotally connected to the sub-frame 2 is pivotally connected to a substantially central portion of the lift arm 8, and the lift frame 3 is moved rearward along the hinge roller 7 by the operation of the lift cylinder 11. , And can be tilted so that the rear end is lowered. One end of the lift arm 8 is connected to the sub-frame 2
, The maximum tilt angle of the lift frame 3 and the body 5 can be reduced, and the tilting of the lift frame 3 and the body 5 can be performed safely.

As shown in FIG. 2, the lower end of the bent portion 6 at the rear end of the lift frame 3 slides the lift frame 3 backward as far as possible and almost contacts the ground when tilted. Has become. Lift arm 8
And the lift cylinder 11 constitute a lift frame driving means.

On the other hand, a roller 1 for body guide is provided at a boundary between the bent portion 6 of the lift frame 3 and the horizontal portion.
2, the body 5 is guided by the rollers 12 so that the body 5 can slide on the lift frame 3.

The body 5 is slid by the structure shown in FIGS. That is, FIG.
As shown in FIGS. 4 (B) and 5 showing the AA cross section of FIG. 1, a chain 1 having one end fixed to the front end of the lift frame 3 and the other end fixed to the rear end of the lift frame 3
9 is wound around a driving sprocket 18 and a pair of idlers 20 and 21 provided at the front end of the body 5. As shown in FIG. 3, the sprocket 18 is driven through a coupling 27 by a hydraulic motor 26 fixed to the front end of the body 5.
It is fixed to 2. Then, as shown in FIG. 4B, the pair of idlers 20 and 21 is connected to the drive shaft 5.
Idler bracket 38 swingably attached to 2
Attached to. 3 and B- in FIG.
As shown in FIG. 4A showing a cross section B, a main body beam 55 provided on the body 5 and guide rollers 56 provided on a guide roller bracket 39 swingably mounted on the drive shaft 52. Thus, the body 5 is supported on the lift frame 3. The guide roller 56 can roll on the lift frame 3. The bracket 39 is mounted on the lift frame 3
Has a locking portion 88 to which a pad 89 is attached on the upper surface. The front end of the body 5 is prevented from rising and separating from the lift frame 3 by sandwiching the lift frame 3 between the guide roller 56 and the locking portion 88 of the bracket 39.

FIG. 6 and FIG. 7 showing a half section in FIG.
A detailed view of the bracket 38 is shown in FIG. As shown in FIGS. 6 and 7, the bracket 38 pivotally supports the plate 37, the boss 35 fitted to the drive shaft 52 via the nylon bush 32, and the idlers 20 and 21 via the nylon bush 33. Pins 30, 31 and 30,
A boss 36 fitted to the boss 31 and a stopper 3 welded to the end faces of the pins 30 and 31 and bolted to the boss 36.
Four. When the front portion of the body 5 slides on the bent portion 6 of the lift frame 3, the pair of idlers 20 and 21 swing together with the bracket 38, and the bent portion 6 of the lift frame 3 bends. The idlers 20 and 21 with respect to the chain 19 stretched along the lift frame 3 are arranged in the same direction.
Is kept constant, and the idlers 20, 21
Does not pull the chain 19 excessively. Further, the guide rollers 56, 56 are also mounted on the bracket 3
9 together with the lift frame 3. Therefore, by driving the sprocket 18 along the chain 19 by driving the hydraulic motor 26, the body 5 can smoothly slide over the entire lift frame 3 including the bent portion 6. Sprocket 18 and idler 2
0, 21 and the chain 19, and the hydraulic motor 26 and the bracket 38 constitute a body driving means.

Also, as shown in FIGS.
At the rear end, there is a tail gate 3 which is also used as a roller 29 and a step board.
1 is provided. Further, a vertical plate 4 is provided at the front end of the body 5.
0 is provided.

FIGS. 8A and 8B are views of the chassis frame 1, the sub-frame 2, the lift frame 3 and the body 5 seen from the front and side, respectively. Is a view of the body 5 seen from above.

The lorry having the above-described configuration loads luggage, for example, an automobile, as follows. First, assuming that the truck is in the state shown in FIG. 1A, the lift cylinder 11 is contracted, and the lift frame 3 is moved via the lift arm 8.
Is slid rearward on the hinge roller 7 and tilted rearward. At this time, as shown in FIG. 9, the guide roller 56 supports the front part of the body 5 with respect to the lift frame 3, and the main body beam 55
The roller 5 is in contact with a roller 12 provided on the rear side to support the rear portion of the body 5 with respect to the lift frame 3. In addition, since the guide roller 56 and the locking portion 88 of the guide roller bracket 39 sandwich the lift frame 3, the front end of the body 5 can be prevented from floating and separating from the lift frame 3. Since the bracket 39 is swingably attached to the front portion of the body 5, the bent portion 6 of the lift frame 3 is particularly suitable.
At the position (3), the bracket 39 swings, and the bent portion of the lift frame 3 is smoothly sandwiched between the locking portion 88 of the bracket 39 and the guide roller 56, so that the front portion of the body 5 is reliably prevented from rising.

Next, the hydraulic motor 26 is driven, and the driving sprocket 18 provided at the front end of the body 5 is caused to travel along the chain 19 extending along the lift frame 3 so that the hydraulic motor 26, the sprocket 18. The body 5 is slid backward along the lift frame 3 together with the bracket 38 and the like. Then, the bracket 38 to which the pair of idlers 20 and 21 is attached swings along the bent portion 6, and the front end of the body 5 can smoothly descend along the bent portion 6. At this time, the roller 29 at the rear end of the body 5 touches the ground and makes the body 5 smoothly retreat with respect to the ground. At this time, the tell gate 31 is upright.

As described above, in the process of sliding the body 5 backward, the rollers 56 support the front end of the body 5 on the lift frame 3 and the rear end and the center of the body 5 on the rear side of the lift frame 3. The roller 12 provided in the support is provided.

When the body 5 is lowered most along the bent portion 6 of the lift frame 3, a state as shown in FIG. 1B is obtained. In this state, the body 5 is lowered almost horizontally on the ground. Then, the telgate 31 is tilted horizontally, and the car is loaded on the body 5.

As described above, since the vehicle is loaded on the body 5 which is in a horizontal state, the driver can move the vehicle forward to just before the front end of the body 5 without any anxiety, and the vehicle can be easily moved to the body. Can be put on. Also, when the driver gets off the car, the body 5
Is level on the ground so that the driver can get off the car without any danger. Furthermore, when a vehicle or other luggage is loaded and secured on the body in the horizontal state, the body 5 is in a horizontal state, so that the luggage can be easily secured and the luggage may be separated. Absent.

Next, the hydraulic motor 26 is driven to first raise the body 5 along the bent portion 6 via the sprocket 18 and the chain 19, and then slide forward along the lift frame 3. At this time, the lower end of the bent portion 6 of the lift frame 3 is grounded by the weight of the vehicle, and the bent portion 6 of the lift frame 3 serves as a support member to prevent the vehicle from rolling backward.

After the body 5 has been sufficiently advanced on the lift frame 3, the lift cylinder 11 is extended to return the lift frame 3 to a horizontal state via the lift arm 8, and to move forward with respect to the sub-frame 2. Slide to the state shown in FIG.

In the above embodiment, the lift frame driving means is constituted by the hydraulic cylinder 11 and the lift arm 8.
The lift frame driving means is not limited to this, and may be any device that can tilt the lift frame. Also, lift frame 3 is attached to sub-frame 2
However, when the sub-frame 2 is not provided, the sub-frame 2 may be slidable on the chassis frame 1.

In the above embodiment, the lift frame 3 is tilted and slid with respect to the vehicle body. However, the lift frame 3 may be tilted only with respect to the vehicle body. Also,
The lift frame may be tilted together with the vehicle body by a jack attached to the front part of the vehicle body.

[0025]

As is apparent from the above description, in the truck of the present invention, the locking portion of the bracket locks the front portion of the body to the lift frame from below, and is provided on the bracket to lift the lift. Since the guide roller rolling on the frame and the locking portion of the bracket sandwich the lift frame, it is possible to prevent the front end of the body from floating and separating from the lift frame.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the operation of a truck according to an embodiment of the present invention.

FIG. 2 is an operation explanatory view of the lift frame of the embodiment.

FIG. 3 is a detailed view of the body driving means of the embodiment.

FIG. 4 is a detailed view of the body driving means.

FIG. 5 is a view of a rear portion of the lift frame of the embodiment.

FIG. 6 is a detailed view of the idler bracket of the embodiment.

FIG. 7 is a detailed view of the bracket.

FIG. 8 is a view of the vehicle body and the body of the embodiment as viewed from the front, side, and above.

FIG. 9 is a front view of the body and the lift frame when the lift frame is tilted.

FIG. 10 is a diagram illustrating the operation of a conventional lorry and showing the details of the main parts of the body driving means of the lorry.

[Explanation of symbols]

1,61: chassis frame, 2,62: sub frame, 3,63: lift frame, 5,65: body, 6,66: bending part, 7,72: hinge roller, 8,68: lift arm, 11,
71 ... lift cylinder, 18 ... sprocket, 1
9,79… Chain, 20,21,80,81… Idler, 26… Motor, 39… Bracket,
52: drive shaft, 55: body main girder, 5
6: guide roller, 88: locking portion.

Claims (1)

(57) [Claims] 1. A lift frame mounted on a vehicle body to be tiltable and having a bent portion bent downward at a rear end side; lift frame driving means for tilting the lift frame; and slidable on the lift frame. A mounted body, body driving means for sliding the body with respect to the lift frame, and a bracket having a locking portion provided at the front of the body so as to be swingable and capable of locking the lift frame from below. A truck provided on the bracket and rolling on the lift frame, and a guide roller sandwiching the lift frame from above and below with the locking portion.