JP2544506B2 - Lorry - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

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 horizontally on the ground.

[Prior art]

Conventionally, as a lorry, the body is slid obliquely from the subframe along the guide rail, and the body is obliquely inserted between the ground and the subframe.
There is one that loads luggage on this body (Jitsuko Sho 61-43623).

[Problems to be Solved by the Invention]

However, the above-mentioned conventional truck has the following disadvantages. Since the body is inclined with respect to the ground and a load is loaded on the body in the inclined state, there are the following problems. (A) Since the luggage is placed on the body in the inclined state, it is difficult to load the luggage. (B) When the vehicle is loaded on the body, the vehicle rises forward, which makes it easy for the driver to feel uneasy when driving.
The vehicle cannot be loaded just before the front end of the body. (C) When the driver gets off the vehicle loaded on the body, it is dangerous because the driver must get down on a narrow body that is rising diagonally above the ground. (D) When securing the luggage to the body, it is difficult to secure the luggage to the body because the body is obliquely above the ground. (E) Since the body is inclined in the oblique direction with respect to the ground, it is difficult to load luggage from the side with respect to the body. In the case of a vehicle, it cannot be loaded on the body from the side. Then, this invention is made in order to eliminate the said trouble, and an object of this invention is to provide the lorry vehicle which can unload a body on the ground in a horizontal state and can load a load.

[Means for Solving the Problems]

According to a first aspect of the present invention, a first guide rail fixed to a chassis frame and having a rear portion higher than a front portion, a horizontal second guide rail fixed to the chassis frame, and mounted on the chassis frame, Having a rear guided portion guided in the front-rear direction by the second guide rail and a front guided portion guided along the first guide rail, the front guided portion is A lift frame that is lifted by the first guide rail and tilts rearward, a lift frame drive unit that slides the lift frame with respect to the guide rail, and a shaft supported by the lift frame and tiltable with respect to the lift frame. A lift arm, lift arm driving means for tilting the lift arm with respect to the lift frame, and a lift arm mounted on the chassis frame. The front side of which is pivotally supported by the lift arm, the body is lowered to the ground in a substantially horizontal state by the rearward sliding of the lift frame and the rearward tilting of the lift arm, and the chassis frame at the rear of the chassis frame. And a support member that is fixed to the body and that supports the rear side of the body slidably in the front-rear direction. A second invention is a slide frame slidable in the front-rear direction with respect to a guide rail mounted on the chassis frame, and a slide frame drive means for sliding the slide frame in the front-rear direction with respect to the guide rail,
A lift frame having a rear portion pivotally supported by the slide frame and capable of tilting with respect to the slide frame; lift frame driving means attached to the slide frame for tilting the lift frame with respect to the slide frame; A lift arm pivotally supported by the lift frame and tiltable with respect to the lift frame,
Lift arm driving means for tilting the lift arm with respect to the lift frame; and a front side of the lift arm, which is mounted on the chassis frame, is pivotally supported, slides the slide frame backward, and A body that is lowered to the ground in a substantially horizontal shape by tilting backward and tilting the lift arm backward.
And a support member that is fixed to the chassis frame at the rear portion of the chassis frame and that supports the rear side of the body slidably in the front-rear direction.

[Action]

In the first invention, first, the lift frame is slid rearward with respect to the chassis frame by the lift frame drive means. Then, in the lift frame, the front guided portion of the lift frame, which is guided along the first guide rail whose rear portion becomes higher, is lifted, and the rear cover of the lift frame, which is guided along the second guide rail, is lifted. It tilts rearward about the guide. Next, the lift arm pivotally supported on the lift frame is tilted rearward with respect to the lift frame by the lift arm drive means. Then, the body pivotally supported on the front side of the lift arm moves rearward as the lift arm tilts,
It is unloaded from the chassis frame and laid almost horizontally on the ground. Thereafter, the luggage is loaded on the body that has been horizontally lowered on the ground, and secured. Then, the lift arm driving means tilts the lift arm forward,
Place the body on the chassis frame. Further, the lift frame driving means slides the lift frame forward, and the body is slid forward of the chassis frame together with the lift frame and the lift arm.
Then, the front guided portion of the lift frame is lowered along the first guide rail, and the lift frame, the lift arm, and the body are returned to the horizontal state. In the second invention, first, a lift frame whose rear portion is axially supported by a slide frame that can slide in the front-rear direction with respect to a guide rail is moved backward with respect to the slide frame by a lift frame drive means attached to the slide frame. Tilt to. Then, the slide frame driving means slides the slide frame rearward with respect to the guide rail. Further, the lift arm pivotally supported by the lift frame is tilted rearward with respect to the lift frame by the lift arm drive means. Then, the body pivotally supported on the front side of the lift arm is lowered from the chassis frame as the lift arm tilts, and is lowered substantially horizontally on the ground. After that, load the luggage on the body dropped on the ground,
Tie up. Then, the lift arm driving means tilts the lift arm forward, so that the body is placed on the chassis frame. Further, the slide frame driving means slides the slide frame forward of the chassis frame and, together with the slide frame, slides forward of the lift frame, the lift arm and the chassis frame of the body. After that, the lift frame driving means returns the lift frame to the horizontal state, and the lift frame and the body together with the lift frame are returned to the horizontal state.

【Example】

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 to 9 are operation explanatory views of the lorry of the first invention. 1-9, 1 is a chassis frame, 2
Is a second guide rail that also serves as a subframe, 3 is a lift frame, 4 is a lift arm, 5 is a body, and 6 is a first guide rail made up of a channel. The body 5 can slide along a guide roller 7 provided at the rear portion of the second guide rail 2. This roller 7
However, it forms a support member that supports the rear side of the body 5 slidably in the front-rear direction. The first guide rail 6 has a front portion lower than the second guide rail 2 and a rear portion higher than the second guide rail 2. Lift frame 3 above
Includes a roller 10 rolling in the groove of the first guide rail 6 formed of the above channel and a roller 11 rolling along the second guide rail 2, and when slid from the front to the rear, tilts rearward. , Sliding from the back to the front makes it horizontal. On the lift frame 3, an L-shaped lift arm 4 having an upper end pivotally attached to a front upper end of a body 5 is pivotally attached at a lower rear end. As shown in FIGS. 6, 7 and 8, a tube of a lift cylinder 12 whose front end is pivotally attached to the front portion of the lift frame 3 is pivotally attached to a corner portion of the lift arm 4, and By the operation, the lift arm 4 is tilted with respect to the lift frame 3 so that the body 5 can be placed on or taken off from the chassis frame 1. The lift frame 3 is slid by the structure shown in FIGS. That is, sprockets 20, 20 and sprockets 21, 21 are provided at the front end and the rear end of the second guide rail 2, and the chain is attached to the sprockets 20, 21.
I am crossing over 23. As shown in FIG. 11, a chain bracket 25 is provided on the chain 23, and the chain bracket 25 is fixed to the shaft 27 of the slide roller 11. The sprockets 20, 20 are driven by a hydraulic motor 28 fixed to the second guide rail 2. Therefore, the lift frame 3 can be slid forward and backward on the second guide rail 2 by moving the bracket 25 forward and backward through the chain 23 by driving the hydraulic motor 28. Above sprocket 2
0, 21, the chain 23, the chain bracket 25, and the hydraulic motor 28 constitute lift frame drive means. Further, as shown in FIGS. 1 to 9, a roller 29 is provided at the rear end of the body 5. The lorry having the above configuration loads luggage, for example, an automobile, as follows. First, assuming that the truck is in the state shown in FIG. 1, the hydraulic motor 28 is driven to move the lift frame 3 along the second guide rail 2 through the sprockets 20, 21, the chain 19 and the chain bracket 25. The lift frame 3 is slid rearward, and the lift frame 3 is tilted rearward by lifting the front side of the lift frame 3 by sliding the lift frame 3 rearward along the first guide rail 6. At this time, the front side of the body 5 is lifted by the lift arm 4, and the rear side of the body 5 is tilted and slid backward while being supported by the rollers 7. As a result, this freight vehicle goes through the states shown in FIGS. 2, 3, and 4 and then into the state shown in FIG. Next, the lift cylinder 12 is extended, the lift arm 4 is tilted rearward, the body 5 is slid rearward, and the front end of the body 5 is lowered. At this time, as shown in FIGS. 6 and 7, the roller 29 at the rear end of the body 5 is in contact with the ground so that the body 5 is smoothly retracted with respect to the ground. When the body 5 is lowered most, the state shown in FIG. 8 is obtained. In this state, the body 5 is lowered almost horizontally on the ground. Then, the car is loaded on the body 5. In this way, since the car is loaded on the body 5 which is in the horizontal state, the driver does not feel any anxiety, and
As shown in the figure, the vehicle can be advanced to the front end of the body 5, and the vehicle can be easily put on the body 5. Further, when the driver gets off the vehicle, the driver can get off the vehicle without any danger because the body 5 is horizontal on the ground. Further, when a car or other luggage is loaded and fastened on the body 5 in the horizontal state, the body 5 is in the horizontal state, so that the luggage can be easily fastened and the luggage may be separated. Nor. Further, since the luggage is loaded on the body 5 in the horizontal state in this way, the luggage can be easily loaded on the body 5 not only from the rear but also from the side. Next, the lift cylinder 12 is contracted to lift the lift arm 4
Is tilted forward to raise the body 5 first, and further slides forward along the lift frame 3. After advancing the body 5 onto the lift frame 3 as shown in FIG. 5, the hydraulic motor 28 is driven to drive the sprockets 20,2.
1, the lift frame 3 is slid forward through the chain 19, the chain bracket 25, and the front side of the lift frame 3 is lowered by the first guide rails 6 to return the lift frame 3 to the horizontal state. Set to the state shown. In the above embodiment, the lift frame drive means is a hydraulic motor.
It consisted of 28, chain 23, sprockets 20, 21, etc.,
The lift frame driving means is not limited to this, and may be constituted by ropes, pulleys or the like. Further, in the above-described embodiment, the lift arm driving means is constituted by the lift cylinder 12, but the lift arm driving means is not limited to this, and any means that can tilt the lift arm may be used. In addition, the lift frame 3 is a second sub-frame.
Although it is slidable on the guide rail 2, a second guide rail may be provided on the chassis frame when there is no subframe. Furthermore, although the hydraulic motor is attached to the subframe, it may be attached to the chassis frame. 12 to 16 are diagrams for explaining the operation of the embodiment of the second invention. In FIGS. 12 to 16, 51 is a chassis frame,
Reference numeral 52 is a guide rail that is also used as a subframe composed of channels, 53 is a lift frame, 54 is a lift arm, and 55 is a body. The body 55 is slidable along a guide roller 57 provided on the rear portion of the guide rail 52. The roller 57 forms a support member that supports the rear side of the body 55 slidably in the front-rear direction. The lift frame 53 and the lift arm 54 are configured to slide the body 55 by the structure shown in FIG. The tip of the slide cylinder 60 pivotally attached to the guide rail 52 is pivotally attached to the slide frame 56. The slide frame 56 includes guide rollers 63 and 64 that roll inside the guide rail 52. Therefore, the slide frame 5
6 can be slid back and forth along the guide rail 52 by the operation of the slide cylinder 60. A lift frame 53 is pivotally attached to the rear portion of the slide frame 56, and the other ends of lift cylinders 61, 61 having one end pivotally attached to the lift frame 53 are pivotally attached to the front end portion of the slide frame 56. By operating the lift cylinders 61, 61, the lift frame 53 can be tilted with respect to the slide frame 53 and the guide rail 52. Lift frame above
L-shaped lift arm whose lower end is pivotally attached to the rear of 53
At the front part of 54, a tube is pivotally mounted on the arm cylinders 65, 65 whose front ends are pivotally mounted on the front end of the lift frame 53. I am able to tilt. A shaft for connecting the body is provided on the upper end of the front portion of the lift arm 54.
It penetrates 66 and supports the body 55. Further, as shown in FIGS. 12 to 16, a roller 69 is provided at the rear end of the body 55. The lorry having the above configuration loads luggage, for example, an automobile, as follows. First, assuming that the truck is in the state shown in FIG. 12, the lift cylinder 61 is extended to lift the lift frame 53.
Tilt it back to the state shown in Fig. 13,
Next, the slide cylinder 60 is contracted, and the lift frame 53 is slid rearward along the guide rail 52 via the slide frame 56. At this time, the front side of the body 55 is lifted by the lift frame 53, and the rear side of the body 55 is supported by the rollers 57 and slides backward. This brings the freight car into the state shown in FIG. Next, extend the arm cylinder 65 to lift the lift arm.
The body 54 is tilted rearward, the body 55 is slid rearward, and the front end of the body 55 is lowered. At this time, the roller 69 at the rear end of the body 55 makes contact with the ground to smoothly retract the body 55 with respect to the ground. When the body 55 is lowered most, the state shown in FIG. 15 is obtained. In this state, the body 55 is lowered almost horizontally on the ground. Then, the car is loaded on the body 55. In this way, since the car is loaded on the body 55 which is in the horizontal state, the driver can feel the anxiety without any anxiety.
As shown in the figure, the vehicle can be moved forward to the front end of the body 55, and the vehicle can be easily put on the body. Further, when the driver gets out of the car, the body 55 is horizontal on the ground, so that the driver can get out of the car without any danger. In addition, when loading a car or other luggage into this horizontal body and securing it, the body 55 is in a horizontal state, so it is easy to secure the luggage, and there is a risk that the luggage may come apart. Absent. Further, since the luggage is loaded on the body in the horizontal state as described above, the luggage can be easily loaded on the body 55 not only from the rear but also from the side. Next, the arm cylinder 65 is contracted to tilt the lift arm 54 forward to raise the body 55 first, and further slides forward along the lift frame 53. After the body 55 is sufficiently advanced on the lift frame 53 as shown in FIG. 14, the slide cylinder 60 is extended to slide the lift frame 53 forward through the slide frame 56, and the lift cylinder 61 is contracted. Then, the lift frame 53 is returned to the horizontal state and brought into the state shown in FIG. In the above embodiment, the slide frame driving means is constituted by the slide cylinder 60, but the slide frame driving means is not limited to this, and may be constituted by a hydraulic motor, a chain or the like. Further, in the above embodiment, the lift frame drive means and the lift arm drive means are composed of hydraulic cylinders.
The lift frame driving means and the lift arm driving means are not limited to this, and may be any as long as the lift frame and the lift arm can be tilted. Further, although the slide frame 56 is slidable on the guide rail 52 which is a sub frame, when there is no sub frame, a guide rail may be provided on the chassis frame.

【The invention's effect】

As is clear from the above, the truck of the first invention lifts the lift frame having the front guided portion which is fixed to the chassis frame and is guided along the first guide rail whose rear portion is higher than the front portion. While being slid backward by the frame driving means, the front guided portion of the lift arm is lifted by the first guide rail,
Inclining the lift frame, tilting a lift arm pivotally supported by the lift frame and pivotally supporting the front side of the body by the lift arm driving means, and sliding the back side while supporting the back side of the body with a support member. By sliding the body over this lift frame,
Since the body is lowered from the chassis frame so that the body is laid horizontally on the ground, luggage can be loaded on the body in a horizontal state. Therefore, according to the present invention, luggage can be easily placed on the body, and in the case of a vehicle, the vehicle only needs to be placed on the body in the horizontal state, so that the driver can easily put the body on the body without feeling any anxiety. The vehicle can be placed on the top of the body, and the vehicle can be advanced to the front end of the body. Further, when the driver gets off the vehicle from the vehicle, there is no danger because the body is placed horizontally on the ground. Further, since it is sufficient to fasten the luggage to the body in the horizontal state, the fastening can be easily performed. In addition, since the body can be placed horizontally on the ground, luggage can be easily loaded from the side. Further, in the freight vehicle of the second invention, the slide frame slidably mounted on the chassis frame is slid backward by the slide frame drive means, and the slide frame is mounted on the slide frame by the lift frame drive means. The lift frame supporting the rear part is tilted, the lift arm pivotally supported by the lift frame and supporting the front side of the body is tilted by the lift arm driving means, and the rear side of the body is supported by the supporting member to the rear side. By sliding
Since the body is slid on the lift frame and lowered from the chassis frame so that the body is laid horizontally on the ground, it is possible to load luggage on the body in the horizontal state. Therefore, according to the present invention, luggage can be easily placed on the body, and in the case of a vehicle, the vehicle only needs to be placed on the body in the horizontal state, so that the driver can easily put the body on the body without feeling any anxiety. The vehicle can be placed on the top of the body, and the vehicle can be advanced to the front end of the body. Further, when the driver gets off the vehicle from the vehicle, there is no danger because the body is placed horizontally on the ground. Further, since it is sufficient to fasten the luggage to the body in the horizontal state, the fastening can be easily performed. In addition, since the body can be placed horizontally on the ground, luggage can be easily loaded from the side.

[Brief description of drawings]

1 to 9 are operation explanatory views of a lorry of the first invention,
Figures 10 and 11 are perspective views of the upper part of the body of the above-mentioned lorry, 12th to 1st.
FIG. 6 is an operation explanatory view of the truck of the second invention, and FIG. 17 is a perspective view of an upper portion of the body of the truck. 1,51 …… Chassis frame, 2,52 …… Subframe, 3,53 …… Lift frame, 4,54 …… Lift arm, 5,55
…… Body, 6 …… First guide rail, 7,29,57,69 …… Roller, 10,11 …… Roller, 12,61 …… Lift cylinder, 20,21 …… Sprocket, 28 …… Hydraulic motor , 60 …… Slide cylinder, 65 …… Arm cylinder.

Claims (2)

(57) [Claims] 1. A first guide rail fixed to a chassis frame, a rear portion of which is higher than a front portion, a horizontal second guide rail fixed to the chassis frame, and mounted on the chassis frame. 2 has a rear guided portion guided in the front-rear direction by the guide rail and a front guided portion guided along the first guide rail, and when slid backward, the front guided portion is moved to the first position. 1 Lift frame that is lifted by the guide rail and tilts rearward, lift frame drive means that slides the lift frame with respect to the guide rail, and a lift that is pivotally supported by the lift frame and tiltable with respect to the lift frame. An arm, a lift arm driving means for tilting the lift arm with respect to the lift frame, and a mount on the chassis frame. A body that is pivotally supported on the front side of the lift arm, is slid to the rear of the lift frame, and tilts rearward of the lift arm to lower the body substantially horizontally to the ground; and a chassis at the rear of the chassis frame. A freight vehicle, comprising: a support member that is fixed to a frame and that supports a rear side of the body slidably in the front-rear direction. 2. A slide frame slidable in the front-rear direction with respect to a guide rail mounted on a chassis frame, a slide frame driving means for sliding the slide frame in the front-rear direction with respect to the guide rail, and the slide frame. A lift frame having a rear portion pivotally supported and tiltable with respect to the slide frame, lift frame driving means attached to the slide frame for tilting the lift frame with respect to the slide frame, and a shaft for the lift frame. A lift arm that is supported and tiltable with respect to the lift frame, lift arm drive means that tilts the lift arm with respect to the lift frame, and is mounted on the chassis frame, and the front side of the lift arm is pivotally supported. Of the above slide frame Body, which is lowered to the ground in a substantially horizontal state by sliding the lift frame toward the rear, tilting the lift frame backward, and tilting the lift arm backward, and is fixed to the chassis frame at the rear of the chassis frame. And a supporting member that slidably supports the rear side of the body in the front-rear direction.