JPS6220050B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trailer that is towed and connected to a tractor, for example, and a container that is loaded on a ship or aircraft to transport cargo. Conventionally, a conveyor belt that slides the load conveying side onto the floor surface inside the container body is stretched, and a load chain that moves the partition gate and the conveyor belt are connected to a partition gate that moves back and forth within the container body, respectively. However, a technology in which the transmission shaft interlockingly connected to the load chain is driven from outside the container body by a drive unit provided separately from the container body (for example,
55-165840) was published. However, in the prior art, the output shaft of the drive unit is fitted into a gear connected to the transmission shaft to connect the transmission shaft and the output shaft, so the drive unit is equipped with an output shaft corresponding to the height of the transmission shaft of the container body. The number of units required is equal to the number of container models, which is extremely uneconomical. Further, the above-mentioned joining operation can only be carried out on a flat surface with very few irregularities.

However, the present invention solves all of the above-mentioned drawbacks, and includes a conveyor belt that slides the load conveying side onto the floor of the container body, and a partition gate that moves reciprocally within the container body. A transmission shaft for driving the conveyor belt via the load chain is provided so as to be exposed outside the container body, and a drive unit including a hydraulic drive device is provided. In this structure, the unit is removably connected to the container body only when loading and unloading cargo, and the hydraulic driving force of the unit is transmitted to a transmission shaft to drive the conveyor belt. A holder and a set pin are provided for removably connecting and fixing the shaft case to be inserted into the drive unit, and a leg column that can be expanded and contracted is provided on the drive unit, so that the drive unit can be raised and lowered by adjusting the expansion and contraction of the leg column. This makes it easy to align the axis of the transmission shaft and the axis of the output shaft of the drive unit and connect them in one piece, even when the containers are of different models and the height of the transmission shaft is different, or even on relatively uneven cargo handling surfaces. This makes it possible to apply one drive unit to all types of container bodies, making the drive unit versatile and drastically reducing equipment costs. The set pin restricts movement in the core direction, and the set pin restricts movement in the direction perpendicular to the axial direction of the transmission shaft and output shaft, so that the drive unit can be securely connected and fixed to the container body via the shaft case, and the transmission shaft The object of the present invention is to provide a container for loading and transporting cargo that can efficiently transmit the hydraulic driving force of the drive unit to the container.

Embodiments of the present invention will be described in detail below based on the drawings. Figure 1 is an overall perspective view, Figure 2 is a cross-sectional side view of the main parts, Figure 3 is a cross-sectional plan view, and Figure 4 is a cross-sectional rear view. A square box-shaped container body equipped with cargo loading/unloading doors 2 and 3, 4 a full trailer equipped with a plurality of running wheels 5 and towed by a tractor (not shown); 6;
8 is a movable drive unit equipped with a platform wheel 7, which is slightly narrower than the short side of the container body 1 and slightly longer than the long side, and whose cargo conveying side slides on the floor surface of the container body 1. conveyor belt that touches
Reference numeral 9 denotes a partition gate which has approximately the same width as the short side inside the container main body 1 and has approximately the same size as the end face of the container main body 1, and which moves reciprocally within the container main body 1; and 10, a gate 9 whose both ends are connected to the gate 9; One end of the conveyor belt 8 is attached to the partition gate 9, and one end of the conveyor belt 8 is attached to the partition gate 9.
The other ends of the belts 8 are connected and fixed in the middle of the belts 8 through fastening fittings 11, respectively. The container body 1
A transmission shaft 13 is supported via a bearing chassis 12 at the inside end of the load chain 10, and a sprocket 14 is supported on the transmission shaft 13, and the intermediate part of the load chain 10 is meshed with the sprocket 14. Rollers 15 and sprockets 16 supported by the container body 1 are mounted on the cargo loading side floor of the container body 1, and the conveyor belt 8 is supported via the rollers 15.
The middle part is bent and stretched, and the sprocket 16
The intermediate portion of the load chain 10 is engaged with the load chain 10, and the transmission shaft 13 is driven in forward and reverse directions to reciprocate the conveyor belt 8 and the partition gate 9 via the load chain 10, and the load a to be placed on the upper surface of the belt 8 is carried in and out. Form it so that it does.

Also, a hydraulic drive device 17 including a hydraulic pump 17a and a hydraulic motor 17b for driving the conveyor belt 8, a reduction gear case 18 for decelerating and transmitting the output of the device 17, and an electric motor 19 for driving the hydraulic pump 17a. A battery 20 and an oil tank 21 for storing hydraulic oil are installed inside the drive unit 6, and a pedestal 23 is provided which can be expanded and contracted by a hydraulic cylinder 22. support. As shown in FIG. 5, a hydraulic pump 17a is interlocked and connected to the motor 19 via a universal joint 24, and includes a speed change lever 25 for adjusting the output of the pump 17a, and an input shaft 26 connected to the hydraulic motor 17b.
The transmission shaft 28 and the output shaft 30 integrally connected to the transmission shaft 13 via the spline fitting joint 29 are connected to the gear case 18.
a shaft case 31 which is supported by the bearing chassis 12 and into which the transmission shaft 13 is inserted;
The gear case 18 is removably connected via a vise-type holder 32 and a set pin 33, the transmission shaft 13 is provided so as to be exposed outside the container body 1, and the output of the hydraulic drive device 17, which is an external driving force, is transmitted to the transmission shaft. 13 to drive the conveyor belt 8 inside the container body 1. The input shaft 26 is connected to the transmission shaft 28 to each gear 34, 35.
The shaft 28 is connected to the output shaft 30 through deceleration gears 46, 47,
48, 49 and a safety clutch 50 that operates to cut off the power when the load exceeds a set load.
Formed to drive.

As shown in FIG. 6, the manual operation lever 5 is equipped with a hydraulic pump 51 driven by the motor 19.
The hydraulic pump 51 is hydraulically connected to each of the above-mentioned hydraulic cylinders 22 through a 3-position, 3-port hydraulic switching valve 53 and each throttle valve 54, and the hydraulic pump 51 is hydraulically connected to each of the above-mentioned hydraulic cylinders 22... , 22 are hydraulically connected to a two-position, two-port type hydraulic switching valve 56 having a manually operated lever 55 through throttle valves 54, 54, and the drive unit 6 is raised and lowered by operating the switching valve 53 by the lever 52. While the height is adjusted, the operation of the switching valve 56 by the lever 55 is also used to adjust the left and right or front and back inclination of the drive unit 6, so that the unit 6 is supported substantially horizontally.

As shown in FIGS. 4 and 7, the floor plate 57 of the container body 1 has a structure in which a plurality of approximately parallel protrusions 58 and grooves 59 are alternately formed in a corrugated plate shape at equal intervals. A sliding promoting film 60 is coated on the upper surface of the protrusion 58 formed in the front-rear direction, and the conveyor belt 8, which has a canvas belt 8b formed on the back surface of the synthetic rubber belt 8a, is stretched over the upper surface of the floor plate 57, and the load The chain 10 is inserted into the groove 59, and the lower surface of the belt 8 is dented by the weight of the load placed on the upper surface of the belt 8, and the engagement between the recess on the lower surface of the belt 8 and the protrusion 58 causes the belt 8 to be The belt 8 is formed so as to be slidably guided and to prevent horizontal movement of the belt 8 in the left-right direction.

As shown in FIGS. 2 and 8, guide rails 61, 61 for guiding the movement of the partition gate 9 are provided on both inner surfaces of the container body 1, and sliding members 63 are attached to both sides of the gate 9 via brackets 62. , the sliding member 63 is connected to the guide rails 61, 61
At the same time, a wheel 64 supporting the gate 9 is supported by the gate 9 via a bracket 65, and the wheel 64 is rotatably inserted into the groove 59 of the floor plate 57, and the guide rail 61
The gate 9 is guided and supported by a sliding member 63, grooves 59, and wheels 64.

As shown in FIG. 9, tension bolts 66 and 67 for adjusting the tension of the conveyor belt 8 and the load chain 10 are provided on the partition gate 9, and the end portion of the belt 8 is bent upward through a guide pipe 68. It is connected and fixed to one tension bolt 66 via a connector 69, and the guide pipe 7
Both ends of the load chain 10 bent upward through the other tension bolt 6
7 is connected and fixed via a connector 72, and the belt 8 and chain 1 are connected to each other via bolts 66, 67.
0 tension adjustment independently.

Figures 1, 2, 5, 10 and 11
As shown in the figure, limit switches 73 and 74 for detecting the starting and ending ends of the movement of the partition gate 9 are installed at the starting and ending ends of the guide groove 61, and plugs 75 and outlets are installed to connect the battery of the drive unit 6 to each switch 73 and 74. 76 and constitutes an operation box 79 equipped with forward and reverse rotation switches 77 and 78, and a plug 80 of the box 79.
An outlet 81 for connecting the plug 80 and the outlet 81 is provided on the rear side of the container body 1.
Each switch 77, 78 is wired to the hydraulic drive device 6 together with the limit switches 73, 74 via.
Further, as shown in FIG. 10, electromagnetic hydraulic switching valves 82 and 83 for forward/reverse switching are interposed between the hydraulic pump 17a and the hydraulic motor 17b of the device 6, and the pump 17a has a discharge side and a suction side. Electromagnetic hydraulic switching valve 8 for stopping the conveyor belt that short-circuits the
4, and a shift lever 25 for arbitrarily adjusting the discharge amount of the pump 17a is connected to the swash plate 85 of the pump 17a.
Connect to. Then, as shown in FIG.
It is connected to the battery 20 via 78a. Each of the limit switches 73 and 74 has a switch 77,
78 normally closed contacts 78b and 77b are connected respectively,
The stop solenoid 84a of the valve 84 is connected to the battery 20 via each switch 73, 74, and the stop solenoid 84a is connected to the battery 20 via the normally closed contacts 77c, 78c of each switch 77, 78 connected in series. , each switch 7
7 and 78, the stop solenoid 84a is turned off to interlock the pump 17a and the motor 17b, and the forward and reverse solenoids 82a and 83a are turned on to rotate the motor 17b in the forward and reverse directions. The conveyor belt 8 is formed to reciprocate together with the gate 9.

As shown in FIGS. 11 to 13, an extrusion gate 87 is attached to the partition gate 9 via an X-shaped telescoping link 86 so as to be movable forward and backward. The intersection axis 90 of the link 86
One end of the arm 89 is connected through this long hole 89a, and the other end of the arm 89 is connected to a piston rod 91a of a hydraulic cylinder 91. The hydraulic cylinder 91 is attached to the partition gate 9, and an extrusion device 92 for driving the cylinder 91 is provided on the partition gate 9, and a 3-position, 4-port electrohydraulic switching valve 93 and a hydraulic cylinder are connected via the valve 93. Hydraulic pump 94 connected to 91
The extrusion device 92 includes a pump 94 and an electric motor 95 that drives the pump 94. The advance/retreat switches 96, 97 are connected to the advance/retreat solenoids 93a, 93b of the valve 93, the container body 1 is brought close to the platform 99 on which the roller conveyor 98 is installed, and the partition gate 9 is moved to the rear end of the container body 1. When the conveyor belt 8 is moved, the extrusion gate 87 is advanced to move the baggage remaining on the conveyor belt 8 to the conveyor 98.

The present invention is constructed as described above, and when carrying cargo a into or out of the container main body 1 via the conveyor belt 8, the drive unit 6 is brought close to the container main body 1, and The height of the unit 6 is adjusted by driving the hydraulic cylinders 22, and the height of the container body 1 is adjusted as shown in FIG.
A joint 29 is attached to the transmission shaft 13 exposed to the outside.
The output shaft 30 is integrally connected through the shaft case 31 and the gear case 1 is connected through the set pin 33 to the shaft case 31.
8, each case 18, 31 is fixed by a holder 32, and the container body 1 is fixed as shown in FIG.
Attach the drive unit 6 to the. In addition, each plug 75,
80, and the forward and reverse rotation switches 77, 78 of the operation box 79 are electrically connected to the forward and reverse solenoids 82a, 83a, etc., as shown in FIG.

When the normal rotation switch 77 is operated, the stop solenoid 84a is turned off and the normal rotation solenoid 8 is turned off.
2a and turn on each valve 8 as shown in Figure 10.
2, 83, and 84 to operate the hydraulic motor 17b in normal rotation, and transmit the output of the motor 17b to the transmission shaft 13 in normal rotation to drive the load chain 10. The belt 8 is moved forward inside the belt 8, and the baggage a is sequentially loaded on the upper surface of the belt 8 to carry the baggage a into the container body 1. At this time, as shown in FIG. The lower surface is recessed, and the belt 8
The engagement between the recess and the protrusion 58 of the floor plate 57 prevents the belt 8 from moving laterally, allows the belt 8 to travel substantially straight along the protrusion 58, and prevents the load from collapsing.

Further, when the reversing switch 78 is operated, the stop solenoid 84a is turned off and the reversing solenoid 8 is turned off.
3a, the hydraulic motor 17b is operated in reverse, and the output of the motor 17b is transmitted in reverse to the transmission shaft 13 to drive the load chain 10, and the conveyor belt 8 is moved to the rear inside the container body 1 together with the partition gate 9. The baggage a on the upper surface of the belt 8 is sequentially carried out to the rear of the container body 1. When the loading and unloading work of the baggage a mentioned above is completed, the drive unit 6 and the operation box 79 are separated from the container body 1 and removed. is attached to other container bodies 1, and the unit 6 and box 79 are used in common to carry in and take out cargo a from a plurality of container bodies 1.

Furthermore, when the partition gate 9 reaches the front and rear ends of the container body 1, either the limit switches 73, 74 are turned on, the stop solenoid 84a is turned on, the hydraulic motor 17b is stopped, and the drive of the conveyor belt 8 is interrupted. At the same time, when the partition gate 9 reaches the rear end of the container main body 1 as shown in FIG. It is moved onto a roller conveyor 98 on a platform 99 via a gate 87.

As shown in the embodiments above, the present invention provides a conveyor belt 8 that brings the cargo conveyance side into sliding contact with the floor surface of the container body 1.
This transporting load chain 1 is attached to the partition gate 9 which is tensioned and reciprocated within the container body 1.
0 and the conveyor belt 8, and connect the conveyor belt 8 through the load chain 10.
A transmission shaft 13 for driving the container body 1 is provided so as to be exposed on the outside of the container body 1, and a drive unit 6 including a hydraulic drive device 17 is provided, and the unit 6 can be detachably attached to the container body 1 only when loading/unloading cargo.
In the structure in which the hydraulic driving force of the unit 6 is transmitted to the transmission shaft 13 to drive the conveyor belt 8, a shaft case 31 into which the transmission shaft 13 is loosely inserted is detachably attached to the drive unit 6. The drive unit 6 is provided with a holder 22 and a set pin 33 for connection and fixation, as well as a leg column 23 that can be expanded and contracted.By adjusting the leg column 23, the drive unit 6 can be raised and lowered, and the container body 1 Even when the models are different and the height of the transmission shaft 13 is different, or even on a relatively uneven cargo handling surface, the axis of the transmission shaft 13 and the axis of the output shaft 30 of the drive unit 6 can be easily aligned and integrally connected. This allows one drive unit 6 to be applied to all types of container bodies 1, making the drive unit 6 versatile and drastically reducing equipment costs.
The holder 22 restricts the movement of the transmission shaft 13 and the output shaft 30 in the axial direction, and the set pin 33 restricts the movement of the transmission shaft 13 and the output shaft 30 in the direction orthogonal to the axial direction. The drive unit 6 can be reliably connected and fixed to the container body 1 through the container body 1, and the hydraulic driving force of the drive unit 6 can be efficiently transmitted to the transmission shaft 13.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing one embodiment of the present invention, Fig. 2 is a cross-sectional side view of the main part, Fig. 3 is a cross-sectional plan view, Fig. 4 is a cross-sectional rear view, and Fig. 5 is a cross-sectional side view of the main part. 6 is a hydraulic circuit diagram, FIG. 7 is a partially enlarged sectional view, FIGS. 8 and 9 are partial explanatory diagrams, FIG. 10 is a hydraulic circuit diagram, FIG. 11 is an electric circuit diagram, and FIG. FIG. 12 is a sectional side view, and FIG. 13 is a hydraulic circuit diagram. 1... Container body, 6... Drive unit, 8
... Conveyor belt, 9 ... Partition gate, 10 ... Road chain, 13 ... Transmission shaft, 17 ... Hydraulic drive device.

Claims (1)

[Claims] 1. A transport belt 8 that slides the cargo transport side onto the floor surface of the container body 1 is stretched, and a load chain 10 that moves the partition gate 9 to a partition gate 9 that reciprocates within the container main body 1 and the transport belt 8. A transmission shaft 13 for connecting the belts 8 and driving the conveyor belt 8 via the load chain 10 is provided so as to be exposed outside the container body 1, and a drive unit 6 including a hydraulic drive device 17 is provided. , the unit 6 is removably connected to the container body 1 only when loading and unloading cargo;
In the structure in which the hydraulic driving force of the unit 6 is transmitted to the transmission shaft 13 to drive the conveyor belt 8,
A holder 22 and a set pin 33 are provided for removably connecting and fixing the shaft case 31 into which the transmission shaft 13 is inserted loosely to the drive unit 6, and the drive unit 6 is provided with a leg column 23 that can be expanded and contracted. A cargo loading/unloading device for containers, which is characterized by: