JPS6318269Y2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, it has been known to carry out cargo handling work by installing a trailer connected to a tractor and a cargo handling/transporting device for transporting cargo by means of a transport belt or the like on the floor plate of the truck's loading platform. However, when the device is installed on the floor of an ordinary loading platform, the thickness of the device raises the floor of the loading platform and reduces the load capacity.

In order to solve the above-mentioned conventional drawbacks, the present invention is equipped with a conveyor belt that transports the cargo by placing it on the upper surface, a drive chain that pulls and drives the belt, and also has a guide space in the horizontal joist that is suspended horizontally on the upper surface of the chassis frame. A drive sprocket, which is interlocked with a drive device, is mounted on the inner end of the body with the horizontal joists installed inside the bottom, and the chain is bent and supported through the sprocket, and the body is used to transport cargo. The belt is bent and supported via a driven roller shafted at the projecting end, and the bent end of the chain and the non-conveying end of the belt are respectively inserted into the guide space and connected via a connector. A base is provided above the horizontal joist and slidably supported, and the other bent end of the chain and the conveying side end of the belt are extended over the upper surface of the horizontal joist to connect and fix the base. The device is connected to each platform, and a shielding plate is laid and fixed on the lower surface of the horizontal joist, and the belt and the lower side of the horizontal joist are sealed off with the shielding plate, so that the equipment can be transported without raising the load surface. The belt can be stretched, and the weight can be reduced by reducing the number of parts used to stretch the belt. In particular, a guide space is formed in the horizontal joist exposed to the outside, and the belt and chain are inserted into the space. In this structure, the shielding plate can prevent mud from adhering to the belt and chain, thereby preventing mud from getting caught in the sprocket and drive device and damaging them, or from getting onto the load via the belt. It is an object of the present invention to provide a cargo transport platform device that can eliminate inconveniences such as the adhesion of mud and improve the efficiency of cargo handling operations.

An embodiment of the present invention will be described below based on the drawings. FIG. 1 is a schematic cross-sectional side view of the truck;
The front wheel 2 is located at the lower front of the ladder-shaped chassis frame 1.
In addition, the rear wheels 3 are respectively mounted on the shafts at the rear lower part, a driver's cab 4 is provided above the front wheels 2, and a cargo transport platform device 5 is formed from the rear of the driver's cab 4 to the rear end of the chassis frame 1. These are mounted and fixed on the chassis frame 1, respectively, and a battery 6, etc., which is a power source for the truck, is further fixed on one side of the chassis frame 1.

The cargo transport platform device 5 is configured as follows. That is, as shown in FIGS. 2 and 3, a batten 7 as a buffer member is stretched and fixed on the upper surface of the chassis frame 1 from the rear end of the chassis frame 1 to the back of the driver's cab 4, A roller box 8 provided at the rear end of the batten 7 (i.e., on the cargo loading/unloading side), a drive box 9 provided at the front end of the batten 7 (i.e., the opposite end of the roller box 8), and each of the boxes 8, A plurality of lower horizontal joists 10 arranged in parallel with the boxes 8 and 9 are horizontally suspended on the upper surface of the batten 7, and each box 8,
Vertical joists 11 are stretched and fixed perpendicularly to the lower horizontal joists 10 on both upper surfaces of the lower horizontal joists 10 and on the upper surface facing the chassis frame 1 between the vertical joists 10 and the lower horizontal joists 10 through the respective vertical joists 11. An upper horizontal joist 12 is horizontally fixed on the opposite surface of the thick 10, and a guide space 13 is formed between the upper and lower horizontal joists 10 and 12, and between the vertical joist 11 and the adjacent vertical joist 11. , between each box 8, 9, a shielding plate 14 is laid between the batten 7 and the lower horizontal joist 10 to seal off the lower surface of the upper and lower horizontal joists 10, 12, and each of the boxes 8, 9 and the lower horizontal joist 10 and the shielding plate 14 are connected and fixed to the battens 7 and the chassis frame 1 through brackets 15 with bolts, respectively. Further, a side frame 17 having guide rails 16 is provided on the upper surface of substantially both sides of the upper horizontal joist 12, and a center frame 18 is provided on the upper surface facing the chassis frame 1 between the boxes 8 and 9, respectively. It is fixed to the upper horizontal joist 12 with screws, and between the respective frames 17, 18, 18, 18,
A plurality of support frames 19 are also arranged in parallel between the boxes 8 and 9 and fixed to the upper horizontal joists 12 with screws, respectively. As mentioned above, the lower horizontal joist 10, the vertical joist 11, the upper horizontal joist 12, and each frame 17, 18, 19 are installed between the boxes 8 and 9 on the upper surface of the chassis frame 1 via the batten 7 and the shielding plate 14. A baggage support structure is constructed in which guide spaces 13 are sequentially overlapped in a grid pattern.

Next, a roller box 8 shaped as shown in Fig.
Bearings 20 having arcuate sides are fitted on both sides of the roller box 8 and on the upper surface facing the chassis frame 1, and are fixed to the roller box 8 with bolts.
The roller shaft 21 is engaged and supported by the roller shaft 21, and the driven rollers 22, 22 are freely rotatably supported by the roller shaft 21 between the respective bearings 20.

Further, as shown in FIG. 5, the drive box 9
The side frame 17 is extended and placed on the stepped surface 23, and a plurality of wheel bearings 24 are fixedly installed inside the box 9, and the drive shaft 25 is mounted on the bearing 24. is idly supported,
Furthermore, a drive sprocket 26 is attached to this shaft 25, and the side and center frames 17, 18, 18,
The sprockets 26, 26 on the other side are provided on the same extension line as the center line of 18, 18, 17, respectively, and the sprockets 26, 26 on the other side
The central sprocket 26 is rotatably supported on the shaft 25. Also,
The input sprocket 27 is key-fitted to the drive shaft 25 between the sprockets 26 and 26 on either side, and the reducer 28 and the battery 6 are connected to the outside of the chassis frame 1 on the lower surface of the drive box 9.
As shown in FIG. 1, the control box A includes an electric motor 29 that receives power from an electric motor 29, which is connected to the lower part of the rear surface of the cargo transport platform device 5, and is equipped with a drive device 30 that drives the electric motor 29 in forward and reverse directions. is fixed with bolts and nuts, and the output sprocket 32 that engages and is pivotally supported by the output shaft 31 of the reducer 28 and the input sprocket 27 are interlocked and connected by a chain 34 that is inserted into a hole 33 formed on the bottom surface of the box 9. and the drive shaft 25
The drive sprockets 26, 26 on both sides are rotated through the drive sprockets 26, 26.

Further, as shown in FIGS. 6 and 3, a base 35 is horizontally mounted on the upper surface of each of the frames 17, 18, 19. The base 35 has approximately L-shaped lower arms 36 fixedly attached to the rear surfaces on both sides thereof, and the L-shaped lower side extends below the base 35, and a convex protrusion is fixedly attached to the outer side of the lower side. A concave sliding piece 38 is fitted to both ends of the frame 37 through the guide rail 16 of the side frame 17. and is slidably supported on the side frame 17. Also, similar to the drive sprocket 26, the side and center frames 1
Tension adjustment parts 39 are fitted to the base 35 so as to be located on the center lines of 7, 18, 18, 18, 18, 17, respectively, and a gate lower 40 is provided, which is made of U-shaped steel members combined in a lattice shape. The base 35 is erected and fixed, and the lower part of the partition gate 41, which is made of U-shaped steel members arranged in a lattice shape, is bent into a dogleg shape to form an inverted dogleg shape as shown in FIG. Stay 42
One side of the stay 42 is fixed to the lower part of the partition gate 41, and the other side of the stay 42 is fixed to the getlower 4.
0 with bolts 43 to connect the partition gate 41 and gate lower 40 in a detachable manner.

As shown in FIG. 2, the tension adjustment sections 39 on both sides have a frame body 44 whose lower part is fitted and fixed to the base 35, and a chain guide whose lower end is formed in an arc shape on the frame body 44. The plate 45 is fitted, the lower end of the chain guide plate 45 protrudes from the lower surface of the frame 44, and the frame 44 and chain guide plate 45 are connected to the base 35 via the mounting plate 46, respectively. Furthermore, a spring cylinder 48 is provided upright on the upper surface of the frame 44 via a lower spring seat 47, with the upper part protruding from the spring cylinder 48 and the lower part facing into the frame 44, and the lower end thereof being vertically slidable on the chain guide plate 45. Chain connector 4 that fits into
An upper spring seat 51 is provided above the bolt 50, through which the tension bolt 50 fixing the bolt 9 is vertically movably inserted through the frame body 44 and the spring cylinder 48.
A tension spring 52 is wound around the bolt 50 via the lower spring seat 47, a tension adjustment nut 53 is screwed onto the upper part of the bolt 50, and the upper spring seat 51 is moved up and down by this screwing in and out operation. The bolt 50 is configured to move up and down using the spring force of the tension spring 52.

Similarly to the tension adjusting parts 39 on both sides, the central tension adjusting part 39 has a frame body 44 having a chain guide plate 45 fitted and fixed to the base via a mounting plate 46, and a chain connecting tool 49 is attached to the lower end. The upper part of the telesion bolt 50 to be provided is attached to the frame 44.
A fixing nut 53' is screwed onto the protruding bolt 50, and the bolt 50 is inserted through the protruding bolt 50.
0 is supported by the frame body 44.

Then, as shown in FIGS. 6 and 2, one end of the conveyor belt 54 on which the cargo is placed is inserted into the back surface of the base 35 through the gap between the base 35 and each frame 17, 18, 19. The belt 54 is bent upward at the corner of the stand 35, and the pressure plate 55 is brought into contact with the end thereof, and the belt 54 is connected and fixed to the base 35 with a plurality of bolts 56.
The lower surface of this belt 54 is brought into contact with the upper surface of 8, 19, and each of the frames 17, 18, 18, 18, 1
8 and 17, respectively, and fold the intermediate part of the belt 54 through the driven roller 22 to form the belt 5.
The other end of the roller box 8 is inserted between the upper and lower horizontal joists 12 and 10 through the guide space 13 through a hole 8a formed inside the roller box 8.

Also, one end of the drive chain 57 that pulls and drives the belt 54 is bent upward through the arc of the chain guide plate 45 and exposed to the inside of the frame 44, and is connected to the tension adjustment section via the chain connector 49. A drive chain 57 is connected to 39, and the drive box 9 is placed between the support frames 19.
The chain 57 is inserted into the box 9 through a pair of upper and lower holes 9a formed inside the box 9, and the middle of the chain 57 is bent through the drive sprocket 26 and inserted into the hole 9.
It is inserted between the upper and lower horizontal joists 12 and 10 through the guide space 13 from a.

Then, each end of each belt 54 and each chain 57 inserted between the upper and lower horizontal joists 12 and 10 is connected and fixed by a connecting tool 58, and the belt 54 and chain 57 are stretched in an endless manner.

Further, as shown in FIGS. 5 and 8, a support plate 59 is provided inside one side of the drive box 9, and a carry-in limit switch 60 for detecting the end of movement of the base 35 is fixed on the upper surface of the support plate 59. An operating piece 61 of 60 is exposed to the outside of the drive box 9 by opening the stepped side surface 23a on one side of the drive box 9, and is provided on the lower arm 36 just before the base 35 reaches the end of movement. Sliding piece 3
The carry-in limit switch 60 is provided so that the switch 8 comes into contact with the operation piece 61.

Further, as shown in FIGS. 5 and 9, an L-shaped support plate 62 is provided at the inner lower part of the drive box 9 at approximately the center thereof, and an unloading limit switch for detecting the end of movement of the base 35 is installed on one side of the L-shaped support plate 62. 63 is fixedly installed, and the carry-out limit switch 63 is provided so that the operating piece 64 of the switch 63 comes into contact with approximately the center of the central connector 58 that connects and fixes the central belt 54 and the central chain 57.

Then, as shown in FIGS. 2 to 5, the inner lining 6
5 and the outer lining 66 are pasted together via a plurality of crosspieces 67. A side wall 68, a front wall 69, a top wall 70, and a rear door 71 are provided, and each wall 68, 69, 70 and rear door 71 are assembled to form a body 72, and each wall 6
The outer lining 66 of 8.69 is provided to be slightly longer than the inner lining 65, and as shown in FIG. A sealing plate 7 is installed between the U-shaped body mounting plates 73 that protrude and connect both ends.
These outer coverings 66 and sealing plates 7 are sandwiched between one end of 4.
4. Connect and fix the mounting plate 73 with bolts and nuts 75, and connect and fix the side wall 68 of the body 72, the upper and lower horizontal joists 12, 10, and the vertical joist 11.

Then, the middle of the sealing plate 74 is connected to this mounting plate 7.
3. Bend it appropriately so as to follow the lower surface and the outer edge of the lower horizontal joist 10, and screw the other end to the lower horizontal joist 10 via the shielding plate 14, and then attach each joist 10, 11, 1
The gap between the two outer sides and the lower part of the body 72 is filled with this sealing plate 74. Further, as shown in FIGS. 4 and 5, the sealing plate 7 is extended to the outside of each box 8, 9, and the gap between the side wall 68 of the body 72 and each box 8, 9 is also One end is connected to the outer lining 66 of the side wall 68 with a bolt nut 75, and the other end is screwed to the outer lower surface of each box 8, 9 to fill the gap. Furthermore, in order to eliminate the gap between the side frame 17 and the side wall 68, a supporting member 77 and a side frame 17 are provided inside the lower end of the lining 65 of the side wall 68.
This is a covering plate that is stretched and fixed with a protruding piece provided on the outside.

Furthermore, as shown in FIGS. 2 and 5, the lower end of the outer lining 66 of the front wall 69 of the body 72 is bent inward, and the front wall attachment is mounted horizontally on the upper surface of the batten 7 and fixed to the back surface of the drive box 9. The plate 78 is attached to the front wall 69
The drive box 9 and the front wall 69 are connected and fixed to the inner side of the lower part of the inner lining 66 of the box. Further, one end of the sealing plate 74 is brought into contact with the inside of this front wall 69.

Further, as shown in FIG. 2, the rear door 71 is provided at the rear of the body 72 via a hinge 79, and the lower end of the door 71 is connected at one inner end to the rear of the roller box 8, and the lower end of the door 71 is connected to the inner side of the lower ends of the both side walls. The upper end of the door 71 is fitted into the crosspiece 80 and the upper end of the door 71 is connected to the upper wall 70.
Formed to fit on one end. As described above, the body 72 is covered from above and connected and fixed to each part to form a luggage compartment 81 above the conveyor belt 54, and this luggage compartment 81 is connected to the shielding plate 14 and the shielding plate 7.
4 and the body 72 in a sealed state, and between the inside of the body 72 and the hollow interior of the outer linings 65 and 66, and the lower horizontal joists 10 on the upper surface of the shielding plate 14 between the boxes 8 and 9, and between them. A heat insulating material 82 of glass wool or other fibers is installed inside and installed so that it can be used for ordinary cargo transportation as well as cargo transportation that requires cooling.

The present invention is constructed as described above, and when carrying in cargo, first the control box A is
When the unload switch is pressed, the electric motor 29
The drive shaft 25 and the drive sprockets 26 on both sides are driven in the reverse direction via the output shaft 31 of the reducer 28, the output sprocket 32, the chain 34, and the input sprocket 27, and the drive chain 5 on both sides is driven in the reverse direction.
7 rotates in the opposite direction, and the sliding piece 3 of the lower arm 36
8 slides within the guide rail 16 of the side frame 17, and the base 35 moves into the luggage compartment 81 together with the conveyor belt 54.
(At this time, the center chain 57 is rotating in accordance with the movement of the base 35.) Immediately before reaching the imaginary line position in FIG. The electric motor 29 is activated, and the power supply from the battery 6 to the electric motor 29 is cut off.
The rotation of each chain 57 and the movement of the base 35 are automatically stopped at the imaginary line position in FIG. 1.

Next, push and operate the carry-in switch of control box A by the size of the cargo, and the electric motor 29
The drive shaft 25 and the drive sprockets 26 on both sides are driven in the normal rotation through the output shaft 31, output sprocket 32, chain 34, and input sprocket 27 of the reducer 28, and the drive chain 5 on both sides is driven in the normal rotation.
7 rotates forward, and the sliding piece 3 of the lower arm 36
8 slides within the guide rail 16 of the side frame 17, and the base 35 moves along with the conveyor belt 54 into the luggage compartment 8.
1, that is, in the direction in which the load is carried in, by the time ((distance) the operator presses the carry-in switch of control box A). When the base 35 is moved by an arbitrary amount as described above, the lower surface of the conveyor belt 54 slides on the upper surface of each frame 17, 18, 19. A belt 54 corresponding to the size of the baggage is laid adjacent to the belt 54, and the baggage is sequentially loaded onto the upper surface of the belt 54 from the rear door 71.This operation is repeated or continuously to carry the baggage inside the luggage compartment 81. be.

Then, the base 35 is located at the side end (the first
When the operating piece 61 of the carry-in limit switch 60 is pressed by the sliding piece 38 of one of the lower arms 36 just before reaching the solid line position in the figure, the power supply from the battery 6 to the electric motor 29 is cut off.
The electric motor 29 stops driving, and each chain 57
The rotation of the base 35 and the movement of the base 35 are automatically stopped at the solid line position in FIG.

In addition, when carrying out the cargo loaded in the luggage compartment 81 as described above, press the carry-out switch in control box A to turn the electric motor 2
9 is reversely driven, and the drive shaft 25 and the drive sprockets 26 on both sides are driven in the reverse direction via the output shaft 31, output sprocket 32, chain 34, and input sprocket 27 of the reducer 28, and the drive chains 57 on both sides are rotated in the reverse direction. Then, the sliding piece 38 of the lower arm 36 slides within the guide rail 16 of the side frame 17, and the base 35, together with the conveyor belt 54, moves to the rear of the cargo space 81, that is, in the direction in which the cargo is carried out, by operating the carry-out switch of the control box A. The chain 57 moves by the time (distance) that the person is pushing it (also, at this time, the chain 57 in the center is rotating as the base 35 moves).

As described above, the base 35 is moved in the unloading direction to move the rearmost loaded item to the vicinity of the rear door 71, and the items loaded on the upper surface of the belt 54 are sequentially unloaded from the rear door 71.

Repeat this operation or continuously
This is to carry out the luggage in 1. and base 3
Immediately before 5 reaches the side end (the imaginary position in Fig. 1) from which the cargo is to be carried out, the unloading limit switch 63 is activated as described above and is automatically stopped at the imaginary line position in Fig. 1. .

In this embodiment, the drive device 30 is installed on the bottom surface of the drive box 9, but the drive device 30 can also be installed on the top surface of the drive box 9 as shown by the imaginary line in FIG. 1 without causing any trouble. The partition gate 41 is bent to avoid this driving device, and the vertical part of the partition gate is bent to form the body 72.
It can be attached to the front wall 69 of the drive box 9, and it is formed so that cargo can be loaded in the space above the drive box 9, and the partition gate 41 allows the base 35 to be moved to any position. The interior of the luggage compartment 81 is divided into a cargo loading space and a non-loading space, which prevents cargo from getting entangled in the chain 57 or coming into contact with the drive device 30, thereby ensuring safety.

In addition, the tension spring 52 of the tension adjustment section 39 expands and contracts the belt 54 and the chain 57 during rotation of the drive chain 57 and when starting and stopping the drive chain 57.
It absorbs the expansion and contraction of When it is desired to increase or decrease the tension of the belt 54 and chain 57 depending on the weight of the cargo, the tension adjustment nut 53 can be screwed in and out to move the upper and lower spring seats 51, 47 apart or close together to adjust the spring force of the tension spring as desired. Set, belt 5
0 and the tension of the chain 57 can be adjusted as appropriate.

Furthermore, when a load is placed on the conveyor belt 54 and the load is conveyed or stopped, an uneven portion is formed between the upper surface of each frame 17, 18, 19 and the lower surface of the belt 54, thereby preventing the belt 54 from moving laterally. The belt 54 moves in a straight line, eliminating meandering and preventing the load from collapsing. Also, the base 35 and the belt 54 are pulled by the chains 57 on both sides by rotating the center chain, so that the base 35 is not tilted. This has the effect of eliminating the rows and making the belt 54 run even more straight.

In addition, the lower surface of the cargo transport platform device 5 is sealed with the shielding plate 14 and the shielding plate 74, and the mud flying from the front and rear wheels is blocked by the shielding plate 14. Furthermore, by incorporating a body 72 with a heat insulating material 82 inside, this cargo transport platform device 5 can also be used for transporting cargo that requires cooling.

As shown in the embodiments above, the present invention is provided with a conveyor belt 54 for transporting cargo on its upper surface, a drive chain 57 for pulling and driving the belt 54, and a horizontal joist 10 horizontally suspended on the upper surface of the chassis frame 1. 12
A guide space 13 is formed in the horizontal joists 10,1.
A drive sprocket 26, which is interlocked with the drive device 30, is mounted on the inner end of the body 72, which has a drive sprocket 26 installed in the bottom thereof, and the chain 57 is bent and supported through the sprocket 26. A driven roller 22 mounted on the protruding end
The belt 54 is bent and supported through the chain 57, and the bent end of the chain 57 and the non-conveyance side end of the belt 54 are respectively inserted into the guide space 13, and these are connected and fixed through the connector 58. , and a base 3 slidably supported above the horizontal joists 10 and 12.
5 is provided, and the other bent side end of the chain 57 and the conveying side end of the belt 54 are connected to the horizontal joists 10, 12.
extended on the upper surface and connected to the base 35,
A shielding plate 14 is laid and fixed on the lower surface of the horizontal joists 10 and 12, and the lower part of the belt 54 and the horizontal joists 10 and 12 is closed off with the shielding plate 14, and the device 5
conveyor belt 54 without raising the cargo loading surface.
It is possible to reduce the number of parts for tensioning the belt 54 and reduce the weight. In particular, the guide space 1 is provided in the horizontal joists 10 and 12 exposed to the outside.
In the structure in which the belt 54 and the chain 57 are inserted into the space 13, mud is removed from the belt 54 and the chain 5 by blocking the lower side of the horizontal joists 10 and 12 with the shielding plate 1.
Therefore, it is possible to prevent mud from getting stuck to the sprocket 26 and the drive device 30, damaging them, or getting mud to adhere to the load via the belt 54. , the efficiency of cargo handling work can be improved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic cross-sectional side view of a truck, FIG. 2 is a cross-sectional side view of a cargo transport platform, FIG. is a cross-sectional front view of Rollerbox, No. 5
The figure is a sectional front view of the drive box, Figure 6 is an enlarged perspective explanatory view of the base, Figure 7 is an explanatory diagram of the connection between the gate lower and the partition gate, and Figures 8 and 9 are explanatory diagrams of the operation of the loading/unloading limit switch. It is. 1... Chassis frame, 10, 12... Horizontal joist, 13... Guide space, 14... Shielding plate, 22
... Driven roller, 26 ... Drive sprocket, 3
0... Drive device, 35... Base, 54... Conveyor belt, 57... Drive chain, 58... Connector,
72...Body.

Claims (1)

[Scope of utility model registration request] A conveyor belt for transporting cargo by placing it on the upper surface and a drive chain for pulling and driving the belt are provided, a guide space is formed in a horizontal joist horizontally suspended on the upper surface of the chassis frame, and the horizontal joist is installed internally in a lower part. A drive sprocket that is interlocked with the drive device is mounted on the inner end of the body, and the chain is bent and supported via the sprocket, and a driven roller is mounted on the cargo loading/unloading end of the body. The belt is bent and supported, one bent side end of the chain and the non-conveyance side end of the belt are respectively inserted into the guide space, these are connected and fixed via a connecting tool, and the belt is slid over the horizontal joist. A base is provided to support the chain in a movable manner, and the other bent end of the chain and the conveying side end of the belt are extended to the upper surface of the horizontal joist and connected to the base, and further connected to the lower surface of the horizontal joist. 1. A cargo transport platform device, characterized in that a shielding plate is laid and fixed, and the lower part of the belt and horizontal joist is closed off with the shielding plate.