JPH07300042A - Pallet device for motor-truck - Google Patents

Abstract

PURPOSE:To provide a pallet device for a motor-truck capable of loading at a time a large amount of earth and sand, crushed stone, etc., and capable of discharging these matters without tilting a loading space. CONSTITUTION:A main frame 6, supporting frame 7 and a subframe 8 are provided on a body frame 3 of a motor-truck 2. Carrier rollers 4 are continuously arranged on the subframe. A drive side roller 9 connected to an oil hydraulic motor 11 is provided in a front end part of the main frame. A discharge side roller 12 is provided in a rear end part of the main frame. A conveyer belt 13 is wrapped around between both the rollers, and tension roller 15 is provided under this conveyer belt. A load case 5 is mounted on an upper part of a conveying part 4. Upper/lower parts 5e, 5f of the load case are opened, and the lower part is closed by a surface of the conveying part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luggage carrier device for a freight vehicle capable of automatically discharging a load loaded on a cargo carrier to the ground.

[0002]

2. Description of the Related Art Conventionally, there are known relatively small freight vehicles equipped with a device capable of automatically discharging a packed lightweight load, but there are known ones. For freight vehicles that can be loaded and discharged to the ground, only those equipped with a device that can tilt the cargo bed, which is generally called a dump truck, can tilt the cargo bed with granular materials such as earth and sand and crushed stone. A freight vehicle equipped with a device that can automatically discharge without a load has not yet existed because it is difficult to develop a carrier device that can withstand a large load such as earth and sand and crushed stone.

[0003]

However, in recent years,
With the increase in civil engineering and construction work, the demand for earth and sand and crushed stone is rapidly increasing, and the frequency of transportation of earth and sand and crushed stone by dump trucks as described above is increasing,
Some dump truck operators operate so-called overloads that exceed the specified load capacity in order to transport a large amount of earth and sand and crushed stones at one time.Currently, this overload causes road fatigue and serious damage. It causes various problems such as the occurrence of accidents. Therefore, it is possible to load a large amount of earth and sand and crushed stones at once if the dump truck's cargo bed length is made as long as a cargo box of a large freight vehicle capable of loading general cargo. In this case, if the loading platform is tilted in order to discharge the earth and sand, crushed stones, etc. loaded on the loading platform to the ground, the entire length of the loading platform is long and the vehicle body may overturn.

Therefore, an object of the present invention is to provide a luggage carrier device for a freight vehicle capable of loading a large amount of earth and sand and crushed stone at one time and discharging the earth and sand and crushed stone to the ground without tilting the carrier. It is what

[0005]

SUMMARY OF THE INVENTION The present invention is a freight vehicle having a vehicle body frame having a driver's cab in the front and capable of mounting a luggage box, and an upper portion and a lower portion narrower than the upper portion are opened and a rear portion can be opened. And a luggage carrier device for a freight vehicle characterized by comprising: a transporting unit capable of transporting a load loaded in the luggage box by closing the lower portion of the luggage box and discharging the cargo from the rear portion of the luggage box. There is.

It is preferable that the load box loaded on the upper part of the load box can be slid down to the lower part by forming the vertical cross-sectional shape of the load box into a narrow trapezoidal shape in which the lower part is lower than the upper part.

It is preferable that a slide plate is provided on the inside of the front surface of the luggage box so that a front article of the articles loaded in the article box can be slid down.

It is preferable that a flap door is provided at the rear end of the luggage box, and the flap door can be opened upward by a hydraulic cylinder.

It is preferable that a chevron member is fixedly provided in the longitudinal direction of the lower portion of the luggage box.

The chevron-shaped member is composed of a vertical member and a horizontal member facing the vertical member. The front end of the vertical member is fixed to the inside of the front surface of the packing box, and the rear end is both ends on the left and right inner side surfaces of the rear part of the packing box. Is preferably fixed to the lateral member to which is fixed.

A front groove body having a vertical groove is provided inside the front surface of the packing box, a rear groove body having a vertical groove is provided at the rear part of the packing box, and the front groove body is provided between the front groove body and the rear groove body. It is preferable to provide an elevating shaft that supports rotatable left and right rotating plates that can close and open the lower part of the luggage box, and to provide an elevating device that elevates the elevating shaft.

At the center of the inside of the front surface of the packing box, there is provided a front groove body having a vertical groove facing the rear of the packing box and having a substantially U-shaped cross section.
A rear groove body having a substantially U-shaped cross-section having a vertical groove that is fixed to the center of a lateral member whose both ends are fixed to the left and right inner side surfaces of the rear part of the cargo box and that faces the front of the cargo box is provided. An elevating shaft with one end slidably inserted into the vertical groove and the other end slidably inserted into the vertical groove of the rear groove body is provided, and one end side is rotatable in the axial direction of the elevating shaft. Is supported by and is inclined toward the erection member,
The left and right rotating plates that can close and open the lower part of the luggage box by the other end side are provided, and the hydraulic cylinder is erected on the upper surface of the erected member that is erected with both ends fixed to the left and right inner side surfaces of the lower part of the luggage box
By fixing the upper end of this hydraulic cylinder to the lifting shaft, the lower part of the luggage box can be opened at the other end of the rotating plate by raising the lifting shaft, and the lower part of the luggage box at the other end of the rotating plate by lowering the lifting shaft. It is preferable to be able to occlude

It is preferable that the elevating device is erected at three positions of a front part, an intermediate part and a rear part of the luggage box.

A transport unit is provided on the body frame of the freight vehicle, a rotatable first roller connected to a drive source is provided at the front end of the transport unit, and a rotatable second roller is provided at the rear end. A plurality of rotatable auxiliary rollers are arranged between the first and second rollers, and a belt conveyor formed by winding a belt between the first and second rollers is used as a conveying means. It is preferable that the lower part of the luggage box be closed and that the loads loaded in the luggage box can be conveyed from the front to the rear.

It is preferable that the drive source of the carrying section is a hydraulic motor that is connected to an auxiliary transmission that branches the power of the transmission of a freight vehicle.

The freight vehicle is a large freight vehicle,
It is preferable to provide a long luggage box and a transport unit corresponding to the length of the body frame of this large-sized truck.

It is preferred that the lorry is a towed lorry.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. The luggage carrier device 1 of this embodiment is as shown in FIGS. 1 to 3, and employs a large freight vehicle 2 with a long wheel base capable of loading a large amount, and mounts it on a body frame 3 of the freight vehicle 2. The transport unit 4 is provided in the
The packing box 5 is mounted on the upper part of the.

Next, based on FIGS. 3 and 4, the transport unit 4
The configuration of will be described. The transport unit 4 has a long overall length according to the length of the body frame of the large-sized freight vehicle 2, and the luggage box 5 can be mounted on the upper portion thereof. First, the plate-shaped main frame 6 is provided on the upper surface of the vehicle body frame 3 of the truck 2. Two support frames 7 are laterally provided at the upper end of the main frame 6. Further, a plate-shaped sub-frame 8 is provided on the upper surface of the support frame 7. A drive side roller 9 is rotatably supported by a bracket 9a at the front end of the main frame 6. One end of the driving side roller 9 is connected to the hydraulic motor 11 by a connecting belt 10. This hydraulic motor 11
Is driven by an unillustrated auxiliary mission (P / T / O) that can be mounted on the truck 2 and is turned on by an operation unit (not shown) mounted on the driver's seat of the truck 2.
-It can be turned off. The drive side roller 9 is
It can be rotated by starting the hydraulic motor 11. On the other hand, at the rear end of the main frame 6, a discharge side roller 12 is rotatably supported by a bracket 12a. Then, the driving side roller 9 and the discharging side roller 12
A conveyor belt 13 is wound around and. This conveyor belt 13 is a laminated rubber having strength such as tensile strength and impact resistance, and is used in a conveyor line or the like where a heavy load is applied. The carrier roller 14 is continuously arranged on the upper surface of the sub-frame 8. The carrier roller 14 is used in a conveyor line used for transportation of gravel in a crushed stone factory, transportation of grain on a farm, and the like. As shown in FIG. The rollers 14a and 14c are arranged in a horizontal row. Each roller 14a,
14b and 14c are independently rotatably supported by a bracket 14d, and a central roller 14b is provided in parallel with the sub-frame 8 and has left and right rollers 14a and 1c.
4c is provided so as to be inclined upward and leftward with respect to the center roller 14b. The carrier roller 14 can rotate while supporting the feed side 13 a of the conveyor belt 13. The return side 13b of the conveyor belt 13 penetrates into a rectangular space A formed between the main frame 6 and the subframe 8. Then, the driving side roller 9
A tension roller 15 is rotatably provided below the discharge roller 12 and below the discharge side roller 12, and pushes down the return side 13b of the conveyor belt 13. Further, near the center of the return side 13b of the conveyor belt 13, a pair of pressing rollers 1 for pressing the conveyor belt 13 from above and below are provided.
6 is rotatably provided.

Next, the construction of the luggage box 5 will be described with reference to FIGS. 6 and 7. The luggage box 5 has a long overall length according to the length of the body frame of the large truck 2. Packing box 5
Is a front frame body 5a, a sliding plate 5b, and left and right side frame bodies 5
c and a rear door 5d, which is mounted on the transport unit 4. The luggage box 5 is supported by a plurality of main columns 17 standing on the periphery of the sub-frame 8. The main support column 17 supports the upper portion of the side frame body 5c from the outside. Furthermore, the plurality of sub-posts 18 are provided on the side frame 5c.
Since the lower part of is supported from the outside, the packing box 5 is firmly supported on the transport unit 4. The upper part 5e and the lower part 5f of the packing box 5 are open. On the lower surface of the opened lower portion 5f, the feeding side 13a of the conveyor belt 13 of the conveying section 4 is provided.
Is located, and the lower portion 5f is closed by the feed side 13a of the conveyor belt 13. A sliding plate 5b is provided inside the front frame body 5a of the packing box 5, and is inclined to the vicinity of the tip of the feeding side 13a of the conveyor belt 13 that closes the lower part 5f of the packing box 5. It is provided. The side surface of the luggage box 5 is closed by the left and right side frame bodies 5c. The left and right side frame bodies 5c are the upper 5
It is provided so as to incline from e to the lower part 5f, and the longitudinal cross-sectional shape of the packing box 5 is trapezoidal. The inside of the packing box 5 is formed so that the opening area becomes narrower from the upper part 5e to the lower part 5f. Has been done. A rear door 5d is provided at the rear of the luggage box 5. The left and right upper ends of the rear door 5d are
Hinge part 5 provided at the upper rear end of the left and right side frame bodies 5a
The rear door 5d is pivotally attached to g and opens upward. Further, the left and right upper portions of the rear door 5d are connected by a hydraulic cylinder 5h provided at the rear ends of the left and right side frame bodies 5c. This hydraulic cylinder 5h can be moved forward and backward by an operation unit (not shown) mounted on the driver's seat of the freight vehicle 2, the rear door 5d can be opened and closed, and the rear opening range of the luggage box 5 can be adjusted. It is a thing.

Next, the transport unit 4 will be described with reference to FIGS.
The operating procedure and the operation of will be described. First, freight car 2
An operation unit (not shown) installed in the driver's seat operates an auxiliary mission (not shown) to drive the hydraulic motor 11. The hydraulic motor 11 is set to drive clockwise,
Along with the clockwise rotation of the hydraulic motor 11, the drive-side roller 9 coupled to the hydraulic motor 11 by the coupling belt 10 starts to rotate clockwise. Drive-side roller 9 provided at the tip of the transport unit 4
Is rotated to the right, the feed side 13a of the conveyor belt 13 is wound around the drive side roller 9 and the discharge side roller 12.
Is sent rearward toward the discharge side roller 12. When the feed side 13a of the conveyor belt 13 is fed backward, the plurality of carrier rollers 14 arranged below the feed side 13a of the conveyor belt 13 are each rotated clockwise. At this time, since the left and right rollers 14a and 14c of the carrier roller 14 are provided so as to be inclined upward and leftward, the feed side 13a of the conveyor belt 13 is
Is sent to the rear in a fan-shaped curved state (see FIG. 7) along the surface of the carrier roller 14. Then, when the feed side 13a of the conveyor belt 13 is fed to the position of the discharge side roller 12, after rotating the discharge side roller 12 to the right, it becomes the return side 13b, and the main frame 6 and the sub frame 8 It returns to the driving side roller 9 through the space A between them. At this time, the tension of the conveyor belt 13 is adjusted by the tension roller 15 provided below the drive side roller 9 and the tension roller 15 provided below the discharge side roller 12, and the return side of the conveyor belt 13 is further adjusted. Near the center of 13b, the pressing roller 16 causes the conveyor belt 13 to return 13
The slack in b is suppressed. The transport unit 4 can repeatedly perform the above operations, and the operation and the stop of the operations can be performed from the driver's seat of the freight vehicle 2 by an operation unit (not shown).

Next, an operation mode of the luggage carrier device 1 of this embodiment will be described. A loading state of earth and sand and crushed stone B will be described based on FIG. Sediment and crushed stone to be loaded B
Is loaded from the upper part 5e of the opened luggage box 5. Of the earth and sand and the crushed stone B that have been thrown in, the one that has been thrown in first arrives at the feed side 13a of the conveyor belt 13 of the conveying unit 4 that closes the lower portion 5e of the packing box 5. Then, in the packing box 5, the feed side 13a of the conveyor belt 13 serves as a floor surface, and earth and sand and crushed stone B can be sequentially loaded.
Further, since the entire length of the packing box 5 is long, a large amount of earth and sand and crushed stone B can be loaded. At this time, since the side frame 5c of the packing box 5 is provided so as to be inclined so that the opening area of the packing box 5 becomes narrower from the upper part 5e to the lower part 5f of the packing box 5, The load due to the earth and sand and the crushed stone B loaded inside is dispersed and applied to the inner surface of the side frame body 5c. by this,
Since the total weight of the earth and sand and the crushed stone B is not loaded on the feed side 13a of the conveyor belt 13, the transport unit 4
It is possible to reduce the burden of.

Next, with reference to FIG. 8 and FIG. 9, the carrying state of earth and sand and crushed stone B will be described. The transport unit 4 is operated according to the above-described operation procedure of the transport unit 4. When the transport unit 4 operates, the feed side 13a of the conveyor belt 13
However, it is sent to the back. On the feed side 13a of the conveyor belt 13, the previously loaded earth and sand and crushed stone B among the earth and sand and crushed stone B loaded in the packing box 5 have arrived. It is conveyed backward together with the feed side 13a of the conveyor belt 13. When the previously loaded earth and sand and crushed stone B are conveyed backward,
Since the inside of the luggage box 5 is formed by the inclined left and right side frame bodies 5c so that the opening area becomes narrower from the upper portion 5e to the lower portion 5f, the earth and sand and the crushed stones that are thrown into the luggage box 5 later. B sequentially slides down toward the lower part 5f of the packing box 5 and reaches the feed side 13a of the conveyor belt 13.
Then, it is conveyed backward together with the feeding side 13a of the conveyor belt 13. In this way, the packing box 5 acts like a funnel. Therefore, the transport unit 4 sequentially transports the earth and sand and the crushed stone B that have reached the feed side 13a of the conveyor belt 13, and thus the soil and the crushed stone B can be smoothly transported.

Further, a sliding plate 5b is provided inside the front frame 5a of the packing box 5 and extends to near the tip of the feeding side 13a of the conveyor belt 13 located on the lower surface of the lower part 5f of the packing box 5. Since it is provided so as to be inclined, soil B and crushed stone B etc. located in the front part in the packing box 5 are also conveyed by the conveyor belt 13
It can be slid down to the feeding side 13a, and the transportation can be carried out more smoothly.

The earth and sand and the crushed stone B are
Since the carrier roller 14 conveys it while being received by the curved portion C of the conveyor belt 13 which is curved in a fan shape, it is reliably conveyed without spilling from the peripheral edge of the conveyor belt 13.

Next, the discharge state of the earth and sand and the crushed stone B will be described with reference to FIG. By the operation of the transport unit 4, the earth and sand, the crushed stone, and the like B placed on the curved portion C of the feed side 13a of the conveyor belt 13 and transported backward are transported to the position of the discharge side roller 12. Discharge side roller 1
Since the conveyor belt 13 at the position 2 is wound around the discharge side roller 12 parallel to the subframe 8,
Since the curved state is changed to the horizontal state, the earth and sand and the crushed stone B are evenly placed on the conveyor belt 13. Then, since the rear part of the luggage box 5 is opened upward by the rear door 5d, the earth and sand and the crushed stone B are sequentially discharged to the ground.

The rear door 5d is a hydraulic cylinder 5h.
Since the opening range of the rear part of the packing box 5 can be adjusted by moving the back and forth, the discharge amount of the earth and sand and the crushed stone B loaded in the packing box 5 can be adjusted as necessary.

Next, a second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 11A, the packing box 105
Vertical member 10 having a chevron cross section in the central longitudinal direction of the lower part 105g
5i and the horizontal member 1 having a chevron cross section facing the vertical member 105i.
It is also possible to fix the packing box frame 105k consisting of 05j. This packing box frame 105k includes a vertical member 105
The front end of i is fixed to the lower inner surface of the front frame body 105a of the luggage box 105, and the rear end is fixed to the lateral member 105j.
Both ends of the horizontal member 105j are connected to the side frame 105c of the luggage box 105.
It is fixed to the inner surface of the lower part of. As a result, FIG.
As shown in FIG. 1 (b), when earth and sand and crushed stones B are loaded from above the packing box 105, the sediment and crushed stones B above the packing box frame 105k come into contact with the upper end of the packing box frame 105k, Since it reaches the feeding side 113a of the conveyor belt 113 after sliding down the edge of the frame 105k, the impact force of the earth and sand and crushed stones B on the transport unit 4 is reduced, and the load on the transport unit 4 can be further reduced. Becomes

Further, a third embodiment of the present invention will be described with reference to FIGS. First, the configuration of the third embodiment will be described. As shown in FIG. 12, at the center of the inner surface of the front frame body 205a of the luggage box 205, a front groove body 206 protruding toward the rear of the luggage box 205 is fixed. The front groove body 206 is obtained by cutting a grooved steel material having a U-shaped cross section into short pieces, and has a vertical groove 206 a facing the rear of the luggage box 205. Further, a rear groove body 207 facing the front groove body 206 is fixedly provided at the center of the rear part of the luggage box 205.
The rear groove body 207 is provided on the left and right side frame bodies 20 of the luggage box 205.
5c is fixed by a lateral member 208 having both ends fixed to the inner surface of the rear end of the upper part, and is a groove steel material similar to the front groove body 206, and has a vertical groove 207a facing the front of the packing box 205. There is. Then, the elevating shaft 20 extends in the longitudinal direction inside the packing box 205.
9 is provided. One end of the elevating shaft 209 is slidably inserted in the vertical groove 206a of the front groove body 206, and the other end of the elevating shaft 209 is the vertical groove 20 of the rear groove body 207.
It is slidably inserted in 7a. This lifting shaft 209
As shown in FIG. 13 (a), hydraulic cylinders 215 to 217 are provided below, and upper ends of the hydraulic cylinders 215 to 217 are fixed to three positions of a front portion, an intermediate portion, and a rear portion of the lifting shaft. There is. The hydraulic cylinders 215 to 217 are erected on the central upper surface of the erection members 218 to 220 whose both ends are fixed to the front inner surface, the intermediate inner surface, and the rear inner surface of the lower side frame 205c of the luggage box 205. The lifting shaft 20 is activated by the operation of the hydraulic cylinders 215 to 217.
9 moves up and down (FIGS. 13 (a) and 13 (b)).
reference). Further, to the left and right in the axial direction of the elevating shaft 209, the rotating plate 22 inclined downward from above the luggage box 205.
1, 222 are provided, and the rotating plates 221 and 22 are provided.
One end side of 2 is rotatably supported by the elevating shaft 209. The other ends of the rotating plates 221 and 222 are connected to the packing box 2
05 Construction members 218 to 2 fixed to three lower parts
It is in contact with the connecting portion between both ends of 20 and the left and right side frame members 205c. Since the rotating plates 221 and 222 are rotatably supported by the elevating shaft, they have a hinge-like structure. Then, the hydraulic cylinders 215 that stand upright at three locations
Through 217 to activate the lifting shaft 209
Is moved up and down to rotate the hinge-like rotating plates 221 and 222.

Next, the operation mode of the third embodiment will be described with reference to FIG. As shown in FIG. 14A, hydraulic cylinders 215 to 2 erected on erection members 218 to 220 (for convenience, description will be made based on erection member 218).
17 (For convenience, description will be given based on the hydraulic cylinder 215.)
Before the operation, the one end of the elevating shaft 209 is
It is located in the lower part in the vertical groove 206a of 06. Lifting axis 2
The other end sides of the left and right rotating plates 221 and 222 supported by the 09 are attached to the erection member 21 fixed to three places under the luggage box 205.
It is in contact with the connecting portions between the both ends of 8 and the left and right side frame members 205c. For this reason, the luggage box 205 includes the lower inner surfaces of the left and right side frame bodies 205c of the luggage box 205 and the left and right rotating plates 22.
The lower part is closed by 1, 222. Therefore, since the earth and sand and the crushed stones B loaded in the packing box 205 do not reach the upper surface of the conveyor belt 213 of the transport unit 204, when the earth and sand and the crushed stones B are loaded and after the loading, The load on the transport unit 204 due to the weight is not applied. Then, when starting the work of carrying the earth and sand and the crushed stone B, as shown in FIG. 14B, the hydraulic cylinder 215 is operated in the ascending direction, and the piston 215a of the hydraulic cylinder 215 is raised. As the piston 215a rises, the lifting shaft 209 fixed to the upper end of the piston 215a rises. At this time, one end of the lifting shaft 209 is connected to the vertical groove 20 of the front groove body 206.
6a, the other end of the lifting shaft 209 slides in the rear groove body 20.
Since it slides in the vertical groove 207a of 7,
The elevating shaft 209 can be stably moved up and down (FIG. 11). Then, as the lifting shaft 209 rises, the other ends of the rotating plates 221 and 222 rotatably supported to the left and right of the lifting shaft 209 come into contact with the upper surface of the erection member 218, and the load box 205. It is drawn toward the hydraulic cylinder 215 located at the center. Rotating plates 221, 22
As the other end of 2 is pulled, the lower part of the closed packing box 205 is opened, and the earth and sand and the crushed stones loaded in the packing box 205 are opened from this opened part. B flows out. The discharged sand and crushed stone B, etc. reach the upper surface of the conveyor belt 213 of the transport unit 204, and are moved backward (the packing box 2 by the operation of the transport unit 204.
04 outside the rear door).

Further, by changing the ascending / descending position of the hydraulic cylinder 215, it is possible to adjust the open area of the other end of the rotating plates 221, 222.
The amount of earth and sand and crushed stone B that reach the conveyor belt 213 can be adjusted, and the amount discharged to the rear of the packing box 205 can be adjusted.

When the discharge of the earth and sand and the crushed stone B in the packing box 205 is completed, the hydraulic cylinder 21 which is moving upward
5 is operated in the lowering direction to lower the piston 215a. As the piston 215a descends, the lifting shaft 209
Is lowered, and the other ends of the rotating plates 221 and 222 are attached to the erection member 2
Since it is in contact with the upper surface of 18, the other end side of the rotating plate 221 moves leftward around the lifting shaft 209 and the rotating plate 222.
The other end side of turns to the right. Therefore, the packing box 20
The open portion of the lower part of 5 is becoming narrower, and the other end sides of the left and right rotating plates 221 and 222 are located at the side frame 205c.
When it comes into contact with the inner surface of the lower part, the lower part of the packing box 205 returns to a completely closed state. Then, the next earth and sand, crushed stone, and the like can be loaded in the luggage box 205 whose lower portion is closed.

Further, in the present embodiment, the freight vehicle equipped with the luggage carrier device 1 is the large freight vehicle 2 having a long wheel base, but it can also be mounted on a trailer type freight vehicle, and the body frame length is increased. If the total length of the luggage carrier device 1 is changed in accordance with the above, the range of use will be expanded and it will be more effective.

Needless to say, those skilled in the art can appropriately change the configuration of the present invention without departing from the scope of the present invention, and such a change has the same technical idea, and thus is included in the present invention. Is done.

[0035]

Industrial Applicability The present invention relates to a freight vehicle having a vehicle body frame having a driver's cab in the front and capable of mounting a luggage box, and a luggage box in which an upper portion and a lower portion narrower than the upper portion are open and a rear portion is opened, and It comprises a transport unit capable of transporting a load loaded in the luggage box by closing the lower portion of the box and discharging the cargo from the rear portion of the luggage box. Therefore, it is possible to discharge the load loaded in the luggage box to the ground without tilting the luggage box.

By forming the vertical cross-sectional shape of the packing box into a narrow trapezoidal shape in which the lower part is lower than the upper part, the load loaded on the upper part of the load box can be slid down to the lower part. Since the load is dispersed and applied to the transport unit, the load on the transport unit can be reduced.

Since a slide plate is provided on the front side of the inside of the packing box so that the front load can be slid down to the lower part of the load stacked in the load box. Can be transported smoothly.

Since a door is provided at the rear end of the luggage box and the door can be opened upward by a hydraulic cylinder, the load can be discharged from the rear end of the luggage box to the ground and, if necessary, discharged. The amount can be adjusted.

When a mountain-shaped member is fixed in the longitudinal direction of the lower part of the packing box, when the load is loaded into the packing box, a part of the loaded product abuts the mountain-shaped member and slides down the edge of the mountain-shaped member. Since it reaches the surface of the transport unit later, the impact force of the load is alleviated and the burden on the transport unit can be further reduced.

The chevron-shaped member is composed of a vertical member and a horizontal member facing the vertical member. The front end of the vertical member is fixed to the inside of the front surface of the packing box, and the rear end is located on the left and right inner side surfaces of the rear part of the packing box. By fixing to the fixed lateral member, the chevron member is firmly fixed in the luggage box, and the impact force due to the load can be reliably mitigated.

A front groove body having vertical grooves is provided inside the front surface of the luggage box, and a rear groove body having vertical grooves is provided at the rear portion of the luggage box.
Provided between the front groove body and the rear groove body is an elevating shaft that supports rotatable left and right rotating plates that can close and open the lower part of the luggage box, and an elevating device that elevates the elevating shaft is provided. This makes it possible to reduce the load on the transport unit due to the weight of the earth and sand and the crushed stone when the sand and the crushed stone are loaded in the packing box.

A front groove body having a substantially U-shaped cross section having a longitudinal groove facing the rear of the packing box is provided in the center of the front side of the packing box, and both sides are fixed to the left and right inner side surfaces of the rear part of the packing box. A rear groove body fixed in the center of the member and having a vertical groove facing the front of the packing box and having a substantially U-shaped cross section is provided, one end of which is slidably inserted into the vertical groove of the front groove body, and the rear portion An elevating shaft having the other end slidably inserted in the longitudinal groove of the groove body is provided, and one end side is rotatably supported in the axial direction of the elevating shaft, inclined toward the erection member, and the other end. The left and right rotating plates that can close and open the lower part of the luggage box by the sides are provided, and the hydraulic cylinder is erected on the upper surface of the erection member that is erected with both ends fixed to the left and right inner side surfaces of the lower part of the luggage box. The upper end is fixed to the elevating shaft, the lower part of the luggage box can be opened at the other end of the rotating plate by raising the elevating shaft, and the lowering of the elevating shaft rotates By making it possible to close the lower part of the packing box at the other end of the plate, it is possible to reduce the load on the transport section due to the weight of the sediment and crushed stone when the sand and crushed stone are loaded in the packing box. Since it is possible to adjust the amount of earth and sand, crushed stone, and the like that reach the upper surface of the transport unit, the amount of discharge from the transport unit can be adjusted.

By vertically arranging the elevating device at three positions of the front part, the middle part and the rear part of the luggage box, the elevating shaft can be stably moved up and down.

A transport unit is provided on the body frame of a freight vehicle, a rotatable first roller connected to a drive source is provided at the front end of the transport unit, and a rotatable second roller is provided at the rear end. A plurality of rotatable auxiliary rollers are arranged between the first and second rollers, and a belt conveyor formed by winding a belt between the first and second rollers is used as a conveying means. Since the lower part of the packing box is closed and the cargo loaded in this packing box can be transported from the front to the rear, the cargo can be efficiently transported and the durability of the transport section against the weight of the cargo Is improved.

Since the drive source of the transport unit is the hydraulic motor connected to the auxiliary transmission for branching the power of the transmission of the freight vehicle, a stable drive force can be provided to the transport unit and the apparatus can be simplified. Can be converted.

A large-sized freight car is used as the freight car, and a large-sized cargo box and a transport unit corresponding to the body frame length of the large freight car are provided, so that a large amount of cargo can be loaded.

By making the freight car a towed freight car, it becomes possible to load a larger amount.

[Brief description of drawings]

FIG. 1 is a perspective view of a freight vehicle equipped with a luggage carrier device of the present embodiment.

FIG. 2 is a rear view of a freight vehicle equipped with the luggage carrier device of the present embodiment.

FIG. 3 is a side view of a freight vehicle equipped with the luggage carrier device of the present embodiment.

FIG. 4 is a perspective view of a transport unit according to the present exemplary embodiment.

FIG. 5 is a perspective view of a carrier roller of this embodiment.

FIG. 6 is a perspective view of a luggage box according to the present embodiment.

FIG. 7 is a sectional view taken along the line II of the luggage box of this embodiment.

FIG. 8 is a diagram showing a state in which earth and sand, crushed stone, and the like are loaded in the packing box of the present embodiment.

FIG. 9 is a diagram showing a transportation state of earth and sand, crushed stone, and the like in the transportation unit of the present embodiment.

FIG. 10 is a diagram showing a discharge state of earth and sand, crushed stone, and the like in the rear part of the luggage box of the present embodiment.

FIG. 11A is a plan view of a packing box showing the second embodiment, and FIG. 11B is a sectional view taken along the line II-II of the packing box showing the second embodiment.

FIG. 12 is a perspective view showing a third embodiment of the present invention.

13 (a) is a sectional view taken along the line III-III showing the initial state of the third embodiment, and FIG. 13 (b) is a sectional view taken along the line III-III showing the operating state of the third embodiment. It is a figure.

FIG. 14 (a) is a sectional view taken along the line IV-IV in the initial state of the third embodiment, and FIG. 13 (b) is a sectional view taken along the line IV-IV in the operating state of the third embodiment. It is a figure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Platform device 2 Lorry vehicle 3 Body frame 4 Conveying section 5 Packing box 6 Main frame 7 Support frame 8 Subframe 9 Drive side roller 10 Connecting belt 11 Hydraulic motor 12 Discharge side roller 13 Conveyor belt 14 Carrier roller 15 Tension roller 16 Holding roller 17 Main column 18 Sub column A Space B Sediment and crushed stone C Curved part

Claims (13)

[Claims] 1. In a freight vehicle having a vehicle body frame having a driver's cab in the front and capable of mounting a luggage box, an upper portion and a lower portion narrower than the upper portion are opened, and a rear portion can be opened, and a lower portion of the luggage box. A luggage carrier device for a freight vehicle, comprising: a transport unit that can transport a load that is closed and loaded in a luggage box and that can discharge the loaded cargo from a rear portion of the luggage box. 2. The load box loaded on the upper part of the packing box can be slid down to a lower part by forming the vertical cross-sectional shape of the packing box into a narrow trapezoidal shape having a lower part than an upper part. Item 1. A cargo bed device for a lorry of item 1. 3. A slide plate is provided on the inside of the front surface of the packing box, and a load located in the front part of the loads loaded in the packing box can be slid down to the lower part. Lorry carrier platform. 4. A luggage carrier device for a freight vehicle according to claim 1, wherein a flap door is provided at a rear end of the luggage box, and the flap door can be opened upward by a hydraulic cylinder. 5. The luggage carrier device for a freight vehicle according to claim 1, wherein a mountain-shaped member is fixedly provided in a longitudinal direction of a lower portion of the luggage box. 6. The chevron member comprises a vertical member and a horizontal member facing the vertical member, the front end of the vertical member is fixed to the inside of the front surface of the luggage box, and the rear end is the left and right inner side surfaces of the rear portion of the luggage box. The luggage carrier device for a lorry according to claim 5, characterized in that it is secured to a lateral member having both ends secured to it. 7. A front groove body having a vertical groove is provided inside a front surface of the packing box, a rear groove body having a vertical groove is provided at a rear portion of the packing box, and a front groove body and a rear groove body are provided. 2. A freight vehicle according to claim 1, further comprising an elevating shaft for supporting rotatable left and right rotating plates capable of closing and opening the lower part of the luggage box, and an elevating device for elevating the elevating shaft. Carrier equipment. 8. A front groove body having a substantially U-shaped cross section having a longitudinal groove facing the rear of the packing box is provided at the center of the inside of the front surface of the packing box, and both ends are fixed to the left and right inner side surfaces of the rear part of the packing box. A rear groove body fixed in the center of the horizontal member and having a vertical groove facing the front of the luggage box and having a substantially U-shaped cross section, and one end slidably inserted into the vertical groove of the front groove body. And an elevating shaft having the other end slidably inserted in the vertical groove of the rear groove body is provided, and in the axial direction of the elevating shaft,
One side is rotatably supported, tilted toward the erection member, and the other side has left and right rotating plates that can close and open the lower part of the cargo box, and both ends are fixed to the left and right inner side surfaces of the lower part of the cargo box. A hydraulic cylinder for raising and lowering the elevating shaft is erected on the upper surface of the installed erection member, and the lower part of the luggage box can be opened at the other end of the rotating plate by raising the elevating shaft. 2. The luggage carrier device for a lorry according to claim 1, wherein the lower end of the luggage box can be closed by the other end of the moving plate. 9. The luggage carrier device for a freight vehicle according to claim 8, wherein the elevating device is provided upright at three positions of a front portion, an intermediate portion and a rear portion of the luggage box. 10. A transport unit is provided on a body frame of the freight vehicle, a rotatable first roller connected to a drive source is provided at a front end of the transport unit, and a rotatable roller is provided at a rear end of the transport unit. A second roller is provided, a plurality of rotatable auxiliary rollers are provided between the first and second rollers, and a belt conveyor in which a belt is wound around the first and second rollers is used as a conveying unit. 2. The luggage carrier device for a freight vehicle according to claim 1, wherein the surface of the belt conveyor closes the lower portion of the luggage box, and the load loaded in the luggage box can be conveyed from the front to the rear. 11. The luggage carrier device for a freight vehicle according to claim 1, wherein a drive source of the transport section is a hydraulic motor connected to an auxiliary transmission for branching the power of the transmission of the freight vehicle. 12. The freight car carrier according to claim 1, wherein the freight car is a large freight car, and the freight car is provided with a long luggage box and a transport unit corresponding to the body frame length of the large freight car. apparatus. 13. The luggage carrier device for a lorry according to claim 1, wherein the lorry is a towed lorry.