JPS6310351Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is intended to be incorporated into the loading platform of a freight vehicle to improve cargo handling efficiency.It is equipped with a conveyor belt that is stretched over the loading platform to carry cargo in and out, and is interlocked and connected to a drive device. One end of the belt is connected to one end of a load chain, and the other end of the belt is connected to a partition gate that connects the other end of the chain via a tension bolt, and the other end of the belt is connected to a partition gate that is arranged parallel to the loading platform in the load loading/unloading direction. The present invention relates to a cargo loading/unloading device for a freight vehicle, in which a plurality of frames on which the belt slides are provided, and the gates are erected and supported on the left and right outer frames so as to be movable back and forth.

Conventionally, as shown in Japanese Unexamined Patent Publication No. 56-90739, a side plate having an L-shaped end face is slidably connected to the belt sliding surfaces of the left and right outer frames, and the rising edge of the side plate is brought into contact with the side wall of the loading platform. Each frame to be integrally connected is fixed in position on the loading platform, and the side edge of the belt is brought into contact with the tip of the side plate that overlaps the belt sliding surface,
A technology has been developed to control the horizontal movement of the belt.

In the case of the above-mentioned conventional technology, there is a risk that the side plate will shift inward due to distortion of the loading platform due to unevenness of the traveling road surface, and a gap will be created between the side plate and the loading platform, resulting in a collision between the device and the loading platform when traveling. However, we cannot afford to damage these parts to each other, and this will significantly damage the center of gravity of the car body, hindering running, making it impossible to fix the position in the vertical direction, and causing a gap between the tip of the side plate and the side edge of the belt. There was a problem that the lateral movement of the belt could not be properly controlled, causing the belt to meander.

However, in the present invention, a side plate is provided to connect the loading platform and the left and right outer frames, and the side plate is stretched between the outer surface of the frame, which is slightly lower than the belt sliding surface of the left and right outer frames, and the loading platform. A protrusion is formed on the sliding surface of the frame to abut against the side edge of the belt to restrict the belt's lateral movement. Since it is connected and fixed at a position slightly lower than the sliding surface of the belt, it is possible to fix the position of the device in the vertical and horizontal directions by the side plates, and grooves lower than the belt are formed on both sides of the loading platform.
When installed in the loading platform of a refrigerated vehicle, water droplets adhering to the inner surface of the loading platform can be discharged to the outside of the loading platform through the grooves without flowing onto the upper surface of the belt, and the side plate does not also serve as a lateral movement regulating member for the belt. The protrusions are integrally formed on the belt sliding surfaces of the left and right outer frames, so after setting the interval between each frame and connecting them together, the gap between the belt and the protrusion does not change.
It is an object of the present invention to provide a cargo loading/unloading device for a freight vehicle in which the lateral movement of the belt can be appropriately restricted by the protrusion.

An embodiment of the present invention will be described in detail below with reference to the drawings. Figure 1 is an overall side view of the truck T, Figure 2
The figure is a cross-sectional plan view of the main part, and Figure 3 is an enlarged cross-sectional rear view of the same. In the figure, 1 is a driver's cab, 2 is a box-shaped cargo bed, 3...
4 is a plurality of running wheels; 4 is an engine; 5 is a running transmission; 6 is a PTO transmission; 7 is a hydraulic pump driven via the running transmission 5 and the PTO transmission 6; 8 is a floor plate 9 of the box-shaped cargo platform 2;
A conveyor belt 12 is installed on the upper surface and slides the load conveying side onto the upper surfaces of the side frames 10 and the central frame 11 as shown in FIG. A partition gate having approximately the same size as the end face of the mold loading platform 2 and reciprocating within the box-shaped loading platform 2. 13... is a road chain that connects one end to the partition gate 12 and pulls and moves the partition gate 12;
... and the other end of the conveyor belt 8 is connected and fixed to the other end of the load chain 13 through a fastening fitting 14, respectively. A transmission shaft 1 is connected to the inside end of the box-shaped loading platform 2 through a bearing chassis 15.
6, and the sprocket 1 is attached to the transmission shaft 16.
A roller 18 is attached to the floor of the box-shaped loading platform 2 on the cargo loading side, and the roller 18 is rotatably supported on the same axis, and the middle of the load chain 13 is meshed with the sprocket 17. The intermediate part of the conveyor belt 8 is bent and stretched through the rollers 18, and the transmission shaft 16 is driven in forward and reverse directions to reciprocate the conveyor belt 8 and the partition gate 12 through the load chain 13. Belt 8... formed so as to carry in and out the baggage a to be placed on the upper surface. Further, a hydraulic drive device 20 is provided on the upper surface of the bearing chassis 15 via a hydraulic oil tank 19, and the road chain 13 is configured to be hydraulically driven via the hydraulic drive device 20 interlocked with the hydraulic pump 7. . The partition gate 12 is also provided with a protruding piece 12a that is wide enough to prevent it from hitting the hydraulic drive device 20 even if the partition gate 12 reaches the final end of the box-shaped loading platform 2, and which serves as a handle. A hole 12b is provided in the partition plate 44 to allow an operator to enter and exit if a failure occurs inside the partition gate 12. Further, reference numerals 21 and 22 in FIG. 2 are limit switches that detect the end and start ends of the movement of the partition gate 12 and control the driving of the conveyor belts 8.

As shown in FIG. 3, side frames 10 with upper side ends 10a bent downward and central frames 11 with upper side ends 11a bent downward are provided between the side frames 10. A horizontal frame 23... is stretched over each frame 10...11...,
The frame 23 is connected with bolts 25 via the seat plate 24 of the side frame 10, and vertical frames 26 are attached to the upper surface thereof, and protrusions 10 are attached to the side frame 10.
b, and the side frame 10 is connected and fixed to the side wall of the box-shaped loading platform 2 via the side plate 27 at a position approximately at the same height as the conveyor belt 8. As shown in FIG. 4, grooves with the same depth as the bottoms of the horizontal frames 23 and vertical frames 26 are cut, and the vertical frames 26 are fitted into the grooves to form joints between the horizontal frames 23 and the vertical frames 26. A hole 28 is opened in the hole 28, and a bolt 29 is inserted into the hole 28.
Screw them together to attach the horizontal frame 23... and the vertical frame 26.
…Connect and fix. Further, 30 is a chain guide, which is connected to the vertical frame 26 at the center of each conveyor belt 8.
The chain guide 30 is fixed with holding pieces 31, 31 interposed therebetween.

As shown in FIGS. 3 and 6, guide rails 32 for guiding the movement of the partition gate 12 are provided on the side frames 10 on both sides of the box-shaped loading platform 2, and brackets 33 are attached to the bottom of both sides of the partition gate 12 using bolts 3.
4 and 34, a sliding member 35 is attached via the bracket 33, the sliding member 35 is slidably fitted to the guide rail 32, and the partition gate 12 is slidably fitted to the box-shaped loading platform 2. A conveyor belt 8 is supported and bent upward via a guide frame 36 at the front lower end of the partition gate 12.
The end portion is connected and fixed to the partition gate 12.

As shown in FIG. 5, a guide rail 37 is provided vertically at the lower end of the rear side of the partition gate 12, and the load chain 13 is slidably connected to the guide rail 37 and extends upwardly.
... is bent and the upper end of the load chain 13 is connected to a slider 38 that is slidably fitted on the guide rail 37, and a tension is adjusted to adjust the tension of the conveyor belt 8 and the load chain 13. The slider 38 is connected and fixed to the lower end of the bolt 39,
A tension spring 40 that keeps the tension of the load chain 13 substantially constant is wound around the upper part of the tension bolt 39 via upper and lower spring seats 41 and 42, and the conveyor belt 8 is attached when the partition gate 12 moves and stops.
The tension spring 40 is formed to expand and contract in proportion to the expansion and contraction of... The lower spring seat 42 is mounted and fixed on the partition gate 12, the upper spring seat 41 is fixed to the upper end side of the tension bolt 39 via the tension adjustment nut 43, and each spring is adjusted by screwing in and out the tension adjustment nut 43. Seats 41, 42
are moved toward and away from each other, and the tension bolts 39 are raised and lowered to set the tension of the conveyor belts 8. Further, 44 is a partition plate, and 45 is a partition plate holding rod supported by an L-shaped holding plate 46 connected to the lower spring seat 42.

As shown in FIG. 7, a driven sprocket 47, which is a drive input wheel, is pivotally supported on the transmission shaft 16 that drives the road chain 13, and the hydraulic drive device 20, the hydraulic motor 48, and the reduction gear case 49
The drive sprocket 50 of the device 20 is connected to the driven sprocket 47 via a drive chain 51.

As shown in FIG. 8, a lever 5 provided on the driver's cab 1
A PTO clutch operation switch 53 is provided to detect the ON operation of engine 4, as shown in
A travel clutch operation switch 55 is provided to detect the clutch disengagement operation of the travel clutch pedal 54 which transmits and controls the output of the drive clutch pedal 54 to the travel transmission 5, and as shown in FIG. A relay 57 is connected in series through 55, and a normally closed switch 58 is connected to the battery 56 through a PTO clutch operation switch 53 and a relay switch 57a.
An alarm buzzer 59 serving as an alarm is connected to the normally closed switch 58, and the normally closed switch 58
A lamp 60 serving as an alarm is connected in parallel to the alarm buzzer 59, and a travel clutch operation switch 55 is connected in parallel.
A relay switch 57b is connected in parallel to the operator so as to notify the operator.

The present invention is constructed as described above, and operates the hydraulic drive device 20 to operate the road chain 13...
The transport belt 8... is driven together with the partition gate 12.
is moved to the front inside of the box-shaped loading platform 2, and loads a are sequentially loaded on the upper surface of the belt 8 to carry the luggage a into the loading platform 2. At this time, as shown in Fig. 3, the side frame The upper protrusion 10c of No. 10 and the upper protrusion 11b of the central frame 11 prevent lateral movement of the conveyor belt 8, allow the conveyor belt 8 to proceed straight along each frame 10, 11, and prevent the load from collapsing. The load chains 13 are driven in the opposite direction through the hydraulic drive device 20, and the conveyor belts 8 are moved to the rear inside the box-shaped loading platform 2 together with the partition gate 12, and the conveyor belts 8 are moved to the rear of the box-shaped loading platform 2 to remove the cargo on the upper surface A is sequentially carried out to the rear of the box-shaped loading platform 2.

As is clear from the above embodiments, the present invention includes a conveyor belt 8 that is stretched over a loading platform 2 to carry in and take out cargo, and one end of the belt 8 is connected to one end of a load chain 13 that is interlocked and connected to a drive device 20. At the same time, the other end of the belt 8 is connected to a partition gate 12 to which the other end of the chain 13 is connected via a tension bolt 39, and the belt 8 is installed in parallel with the loading platform 2 in the cargo loading/unloading direction. In an apparatus in which a plurality of sliding frames 10, 11, 26 are provided and the gate 12 is erected and supported on the left and right outer frames 10, 10 so as to be movable back and forth, the side plate connects the loading platform 2 and the left and right outer frames 10. 27 is provided, and the side plate 27 is stretched between the outer surface of the frame 10, which is slightly lower than the belt sliding surface of the left and right outer frames 10, and the loading platform 2, and the belt is attached to the sliding surface of the left and right outer frames 10, 10. A protrusion 1 that comes into contact with the side edge of the belt 8 to restrict the lateral movement of the belt 8
0c, one end of the side plate 27 is connected and fixed to the loading platform 2, and the other end is connected and fixed at a position slightly lower than the sliding surface of the belt 8 on the outer surface of the left and right outer frames 10, 10. In addition to being able to fix the position of the device in the vertical and horizontal directions, grooves lower than the belt 8 are formed on both sides of the loading platform 2, and when it is installed in the loading platform 2 of a refrigerated vehicle, the belt 8 removes water droplets adhering to the inner surface of the loading platform 2. It can be discharged to the outside of the loading platform 2 through the groove without flowing onto the upper surface, and the belt 8 can be discharged from the belt sliding surfaces of the left and right outer frames 10, 10 without using the side plate 27 as a lateral movement regulating member. Since the portion 10c is integrally formed, after the intervals between the frames 10, 11, and 26 are set and they are integrally connected, the belt 8 can be moved laterally by the protrusion 10c without changing the gap between the belt 8 and the protrusion 10c. It has practical and remarkable effects, such as being able to properly regulate the

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing one embodiment of the present invention, Fig. 2 is a cross-sectional plan view of the main parts, Fig. 3 is an enlarged cross-sectional rear view of the same, Fig. 4 is an explanatory diagram of installing the vertical frame, Figure 5 is an explanatory diagram of the conveyor belt installation, Figure 6 is an explanatory diagram of the partition gate installation, Figure 7 is an explanatory diagram of the conveyor belt drive section, Figures 8 and 9 are partial explanatory diagrams, and Figure 10 is an explanatory diagram of the conveyor belt drive section.
The figure is an electrical circuit diagram. 2...Box-shaped loading platform, 8...Transport belt, 10...
Side frame, 11...Central frame, 12...
Partition gate, 13...road chain, 23...horizontal frame, 26...vertical frame.

Claims (1)

[Scope of utility model registration request] A conveyor belt 8 is provided which is stretched over the loading platform 2 to carry cargo in and out.One end of the belt 8 is connected to one end of a load chain 13 which is linked to the drive device 20, and the other end of the chain 13 is connected to a tensioner. The other end of the belt 8 is connected to the partition gate 12 connected via a bolt 39, and a plurality of frames 10, 11, 26 are arranged in parallel on the loading platform 2 in the cargo loading/unloading direction and on which the belt 8 slides. In the device in which the gate 12 is erected and supported on the left and right outer frames 10, 10 so as to be able to reciprocate, the side plate 2 connects the loading platform 2 and the left and right outer frames 10.
7 is provided, and the outer surface of the frame 10, which is slightly lower than the belt sliding surface of the left and right outer frames 10, and the loading platform 2
The side plate 27 is stretched between them, and protrusions 10c are formed on the sliding surfaces of the left and right outer frames 10, 10 to abut against the side edges of the belt 8 and restrict the lateral movement of the belt 8. A cargo loading/unloading device for freight vehicles, which is characterized by: