JPS60128131A - Cargo conveying device - Google Patents

Abstract

PURPOSE:To obtain a conveyor device which is compact but has a large moving distance, by constituting a cargo handling device which is movable back and forth, such that it is driven through a chain. CONSTITUTION:A drive means 7 is composed of a telescopic mast 26 which is connected at one end to a base 3 and at the other end to a cargo handling device 5, and a mast drive device 27 for controlling the extension and retraction of the mast 26. This mast 26a is composed of an outer mast 26a secured to the base 3, and a plurality of inner masts 26b through 26d which are laid in multistages and are movable back and forth between their retracted position and their extended position. Further, the mast drive device 27 is composed of a hydralic cylinder 33 for controlling the longitudinal movement of the lowermost inner mast 26b, and a chain 34 for towing the upper masts in association with the back and forth movement of the mast 26. With this arrangement the moving distance of the cargo handling device may be ensured, and moreover the occuppied space of the device may be made minimum.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cargo conveying device that is optimal for transportation containers and the like.

[Prior Art] Conventionally, when loading cargo by loading a cargo handling device such as NoA-Cliff 1 into a container for transportation, the loading of the loading device into a container is generally done by As shown in FIG. 1, a boarding platform B is used, which is bridged over the entrance of the shipping container A.

Using the platform B: In the conventional method of moving the cargo handling device C into the container, climbing and descending the platform B requires effort such as derailing, which takes time and affects work efficiency. comes out. In addition, since the harvesting is carried out in a narrow container A, extreme care must be taken to avoid hitting the inner wall of the container, and the work requires concentration, which may cause fatigue. There's a problem.

Therefore, as a means to solve the above-mentioned problem, for example, a cargo handling device controlled by remote control is attached to the axial rail so that it can be moved by movement, and cargo handling work can be performed within the range of the track rail. There is a b that looks like this (for example, ``Utility Model Application Publication No. 131228/1983,
See Publication No. 131229. ).

Both of Konera's bathing means are fixed devices and track-traveling type quibs, so they ensure a large amount of movement for the cargo handling equipment. This becomes a nuisance and requires a large amount of space for the device.On the other hand, when the device is miniaturized, there are problems such as a limited range of work and operation.

[Objective of the invention 1] Therefore, the present invention makes it possible to secure a large amount of movement of the cargo handling device, and also to prevent it from getting in the way when not in use.
To provide a cargo conveyance device which minimizes the space occupied by the device without causing any problems.

[Structure of the Invention] In order to achieve the above object, the present invention includes a base, a cargo handling device mounted on the base and capable of moving forward and backward, and a moving movement of the cargo handling device in the front and back direction. b/ζ
A cargo conveying device comprising a driver and a control device for controlling the forward and backward movements of the cargo handling device, the driving device having one end as a base, The mast consists of a mast that is connected to a cargo handling device and can be extended and contracted back and forth, and a mast drive device that controls the mast so that it can be extended and contracted.
It consists of an outer mast fixed to a base, and a plurality of inner masts arranged in multiple stages on the outer mast and movable back and forth between a stored state and an operating state in which they protrude forward. Furthermore, preferably, the mast drive device is composed of a hydraulic cylinder that controls the lowermost inner mast so that it can freely move back and forth, and a crane that pulls the upper inner mast in accordance with the back and forth movement of the mast. .

[Example] The present invention will now be briefly described based on illustrated examples.

Figures 2 and 3 are a -5p view and a side view, respectively, showing an embodiment of the present invention, in which 1 shows a container as an example of a cargo storage body, and 2 shows a container for transporting cargo according to the present invention. Each device is shown.

Here, the container 1 is placed on a trailer truck, and the transport device 2 is in a working state connected to the container 1.

The conveying device 2 has a platform 4 on a base 3 disposed at the lowest side, which can be moved horizontally in the width direction of the container 1 by means of a hydraulic cylinder or the like.In this example, the platform 4 is tightly connected to the container 1. A connecting means 5 is installed on the platform itself, and a cargo loading/unloading movement with respect to the container 1 is carried out between the platform 1 and the platform 4 (G).
The cargo handling device 6 is arranged, and the container of this cargo handling device 6 is
A drive means 7 for moving forward and backward into the cargo handling device 6 is provided on the platform 4 in this example, and a control I device for controlling these loading and unloading movements and forward and backward movement of the cargo handling device 6, for example, a respective cargo handling device. on the device 6 and the platform 4 or on the platform 4''.

Here, the base 3 can be of a stationary type or a portable type if the container 1 is movable together with a trailer truck as in the illustrated example, but preferably it is equipped with wheels 8a and 8b. By doing so, the C base 3 is made to be a traveling type, more preferably a self-propelled type.Furthermore, either of the wheels 8a and 8b -jj facilitates the tight connection between the container 1 and the platform 4, which will be described later. In order to ensure a reliable installation, it is preferable to use casters.
In order to facilitate the bridging of the gangplank 9 provided at the ends of the plan 1 to the small plan 4 to the container 1, it is advanced and retracted by, for example, a hydraulic cylinder. c.
Preferably, the platform level can be adjusted.

In addition, the platforms 4 installed on the bases 3'' and 3'' align the center lines of the bases 3'' and 3'' with the center lines of the platform 3'' and ensure that the cargo handling equipment 6 can advance and retreat without interfering with the 1'' and 1''. Hydraulic cylinder, screw means 4i' etc. known 41
It is horizontally moved relative to the base 3 by the iM drive means.

4 (a>,
As is clear from the enlarged plan view and enlarged side view of τ1 shown in l), the support roller O is attached to the base 3 with 3=1.
A hydraulic cylinder 3 is attached via a bracket 12 to the underside of the platform 4, which is supported by the platform 4 and whose movement is also guided by the guide 11. A connecting pin 16 is installed horizontally at the tip of the connecting plate 15, and this connecting pin 1
6 through the horizontal elongated hole 18 of the support fitting 17 that is integrated with the bracket I~home 4, pivot the lever 19 on the tip of the connecting pin 1G of In other words, a spring-loaded hook 20 is installed toward the center line of Plano 1 to Platform 4.

Here, the coupling pin 1G can move in the length direction of the platform 4 within the horizontal elongated hole 18 as the cylinder rod 14 is operated, and as a result, the lever 19 can move forward and backward with respect to the container 1. In addition, the hooking bin 20 overlaps the corner fitting 21 provided at the corner of the container 1 with the tip of the lever 19 and pulls it outward against the spring force. When the positions of the hook pin 20 and the hook pin 20 are aligned, the external force is removed and the pin fits into the hole 22 (see FIG. 4(a)).

In this example, the cargo handling device 6 on the platform 4 has a pair of claws 24 that are raised and lowered by commands from a control device 23 provided on the platform 4.
The movement of loading and unloading the cargo is carried out by lifting, supporting and lowering the cargo by the claws 24. Further, the forward and backward movement of the cargo handling equipment 6 can be achieved by making each of them self-propelled, but in this case, in order to ensure the linear movement, a telescoping type installed on the platform 4 is used. A driving means 7 causes the movement to move forward and backward. At this point, a control device 25 is also installed on a platform 4 located outside the container 1 by giving a command to the drive means 7 to cause the cargo handling device 6 to move to a predetermined position and to stop. .Here, the control device 23 for the loading and unloading movement of (+Iη)
5 and can also be installed on platform 10.

FIG. 5 is a perspective view showing the relationship between the cargo handling device 6 and the drive means 7. The drive means 7 has a mast 26 that can be extended and contracted back and forth, and a mast 26 that can be controlled to be extendable and retractable. The mast 26 is connected to an outer mass I-26a supported by a platform 4 on the base 3 side via a bracket 28.
1 and the first inner mast 2 in which the inner masts 261+, 26c, and 26d are slidably stored and set.
6b is guided by the rail portion 29 of the outer mast 268, the second inner mast 260 is guided by the rail portion 30 of the first inner mast 26b, and the third inner mast 26d is guided by the rail of the second inner mast 26C. The third inner mast 26d can be guided by the third inner mast 26d and can move in the front and back directions (left and right in Figure 8).
is connected to the cargo handling device 6 via a bin 32.

On the other hand, the mast drive device 27 drives the first inner mast 26
Oil Y [cylinder 33 and the second oil Y that controls the tl in a longitudinally extensible manner according to the longitudinal movement of the first inner mast 21b;
A cylinder portion 33a of the hydraulic cylinder 33 is provided with a chain 34 for pulling each third inner mast 26C926d.
is supported by the outer mast 26a, and the rod 33b is supported by the first outer mast 26a.
is connected to the inner mast 261).

The first chain 34 is hung around sprockets h35 and 35 supported at the front and rear of the first inner mast 26b, and both ends are connected to the outer mast h.
It is attached to the bracket 36 of 26a. ￥i
The second engine 3/l is wound around sprockets 37 and 37 supported at the front and rear of the second inner mast 26c, and both ends are attached to the brakes 1-38 of the third inner mast 26d. Each boom [-34, . At 3'l, the desired tension is applied to the tensioning device 39°39.

The three tension devices are the first and second inner masts 2611
A pair of brackets 40, , /lo provided on , 26C
Then, a little bit 41 is passed through the rod 42 that has the right free play, and a tension spring 43 is inserted between the rod 42 and the inside of the rod 42, and the outer side of the rod 42 is inserted. In part 1,
Cut off the drive side of the chain 371.
It is a configuration in which the two parts are connected.

As a result, with respect to the operating stroke of the hydraulic cylinder 33, the first inner mast 26b advances the same, the second inner mast 26C moves twice, and the third inner mast h 26d moves three times.

As shown in FIG. 9, the hydraulic cylinder 33 of the mist drive device 27 has a double-acting type hydraulic cylinder 33, with a side hydraulic chamber and a cylinder side hydraulic chamber connected to an electromagnetic switching valve 44, respectively. The electromagnetic switching valve 44 is connected to the hydraulic tank T via the hydraulic pump P, and the
5 is connected to the hydraulic tank T. In this case, preferably, the pressure switch 47 is connected to the cylinder chamber side hydraulic chamber,
The activation signal of this pressure switch 7!17 is inputted to, for example, the electromagnetic switching valve 44 to set it at the neutral position. According to this hydraulic circuit, by causing oil from the hydraulic pump P driven by the motor M to flow into the cylinder-side hydraulic chamber under the operation of the electromagnetic switching valve 44, the cylinder rod 33b can be moved forward.
By flowing into the rod side hydraulic chamber, the cylinder rod 33b is respectively caused to retreat. Here, the pressure switch 47 is activated during the advance of the cylinder rod 33b.
In other words, when the right I service equipment 6 connected to the drive means 7 is moving forward, it comes into contact with the front end wall of the container 1 or the cargo that has not been loaded therein in advance, and the internal pressure in the cylinder side hydraulic chamber becomes -LH. , it detects this and acts to stop the +)if advance of the cargo handling device 6. Therefore, for example, when loading cargo into container 1, this pressure switch 47 uses the front end of container 1 as the positioning origin, and locates the cargo handling device at the position where it is in contact with the front end wall of the conduit or the cargo. , which can be used to sequentially load cargo supported and conveyed by the device Fi 6. Incidentally, the stop Jl of the cargo handling device 6 at the predetermined treetop penetration 1σ position is, for example,
A plurality of microswitches are installed at a predetermined pitch on the outer mast 26a, and a plurality of microswitches are installed on the inner mast 26b of the ff5i so that each can be activated by a single dog. As soon as the cylinder rod 33I is activated, advance the cylinder rod 33I by 1.
';-It is also possible to avoid stopping the operation, and in this case, the pressure switch 47 mentioned above can be installed as an auxiliary switch.
I can play. Further, the pressure switch 47 has a plurality of microswitches (71 stages), and the microphone [1 switch is used as a deceleration switch.
7 function as stop switches, the cargo handling device 6 can be stopped 1 reliably and smoothly even when the cargo handling device 6 travels at high speed.

Here, the hydraulic pump P1 motor M and the hydraulic tank D,
In addition to these, a driving source for self-propulsion of the conveying device 2 is housed in a power source 48 shown in FIG. 2.3.

Again, in FIGS. 2, 3 and 5, the cargo handling device 6 connected to the tip of the drive means 7 is roughly connected to the front and rear running wheels 4.
9, and a hydraulic power source for driving the pawl 24 up and down, and in some cases, a power source 51 that stores a drive source for self-propulsion in the corner of C. Further, in this example, a claw fixing member 52 to which a pair of claws 24 is fixed and which is perpendicular to C.
However, in addition to the vertical movement along the cargo handling mast, the platform 4 can also be moved horizontally in the width direction, and microswitches S are provided at both ends of the claw fixing member 52, respectively. These microswitches S cooperate with the guide rail 53 fixed to the platform to always keep the claw 24 of the cargo handling device 6, which is retreated to the limit position, at its center, in other words, at the center of the swings 1 to 4. It acts in a similar manner within the container 1 in cooperation with its side walls. As a result, the cargo handling device 6, which has retreated to the limit position, is supplied to a predetermined position on the platform 4 in the next advancing step, and the cargo is always lifted up in a stable state by its claws 24'c. In addition, the load, road surface, and other conditions may cause slight twisting or other twisting of the cargo supported by the claws 24 in the container. The drive means 7 must have sufficient rigidity so that the container 1 can be transported without any problems.
In the case where no twisting or the like occurs, the straightness of the cargo handling device 6 can be sufficiently ensured.

J: Since the cargo handling device 6 of the octopus example is equipped with a control device 23 for raising and lowering the pawl 2/I, it is possible to stop the cargo handling device 6, which is a prerequisite for starting the respective raising and lowering operations. Preferably, it is detected by itself rather than by a signal from the control device 25. For this reason, here, the wheel disc 5 of the running wheel 49 is shown in a perspective view in FIG.
A ring-shaped plate 55 is attached to the lever plate 55, and convex portions or four portions, in the illustrated example, convex portions 56 are provided radially, and furthermore, a high frequency proximity switch 57 is provided opposite to these convex portions 56. Place it. The main circuit of this proximity switch 5]7 is as shown in Figure 11.
It is connected to the phase inversion output circuit through the differentiating circuit a3 and the integrating circuit in sequence.

According to the stop detection device configured in this way, the time t
The forward stop of the cargo handling device 6 in step 1 (), in other words, the stop of the running wheels 49+1 is shown in FIG.
Then, the peak wave output of the differentiating circuit is stopped, and J:
In addition, the ON output of the integrating circuit is detected by the output of the output circuit changing from OFF to ON. A command is issued.

When the cargo handling device 6 is used as a drive source for self-propulsion of the vehicle, preferably, as shown in FIG. are each equipped with a manually operated lever 59 for loading and unloading movement.
It is desirable to be able to take manual action in the event of a failure of the drive means 7 and the control device 23,25.

In addition, the claws 2 are stacked in one layer by the cargo handling device 6, and the claws 2 are stacked in two layers by the cargo handling device 6.
4 positioning etc. is done by microswitch fj. Further, switching from the lower stage to the upper stage is performed by directing light from a light emitting element 60 installed on the plant platform 4 side to a light receiving element 61 of the cargo handling device 6, and is not shown in FIG. Cargo handling work will be carried out based on the procedure block diagram.

In the cargo transport device configured as described above, the container 1 and the transport device 2 are connected.

Next, the self-propelled conveyor 62 set on the platform 4 is operated, and the cargo 63 is carried there by a forklift or the like. As a result, the cargo 63 is transported to the stopper 63 which is previously in the upright position, where it is held in the inverted position of the stopper 63. Next, the operation console 64
By turning on the start switch, the collar 63 is inverted, and the cargo 63 is transported to a predetermined supply position on the plan 1 board. The mark 6 for transporting the cargo 63 to a predetermined supply position is, for example, set at the end of the self-propelled conveyor 62.
This detection signal causes the stopper 63 to rise again and the drive means 7 to start operating.

In response to this, the drive means 7 advances the cargo handling device 6 to the self-propelled conveyor position and stops, and the timer is activated and then continues for a certain period of time.

On the other hand, while the cargo handling device 6 is stopped, its claw 24 is
Detects that the nail has completely entered the pallet of 3 and releases the nail 2.
111 and, in turn, the cargo 63 can be lifted to the required height.

The lifting height of the cargo 63 is selected depending on whether or not light is emitted from the light emitting element 60, and if no light is emitted, it is set to the lower stacking height, for example, 350,111 m, and if it is emitted] Double stacked height C 1'2541+
Tx to 1111. As soon as the lifting of the cargo 63 is completed, the drive means 7 is operated again and the cargo handling/loading drawer is advanced to the loading position. At this time, outer mast 26a and inner? ), h 261), 26C, 26d d J, tsu'<1'+#'4 It becomes possible to secure a large vine stroke, and it becomes possible to correspond to the length of the container 1. After transportation, the masts 2G are stacked in multiple stages due to the retreat of the cargo handling device 6, and are in a storage state that occupies the minimum space.

[Effects of the Invention] As explained above, according to the conveying device of the present invention,
Since a large moving group of cargo handling equipment can be secured, the scope of work can be expanded, and since poems that are not in use can be stored, the space occupied when they are not in use can be kept to a minimum.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional example, FIG. 2 is a plan view showing an embodiment of the present invention, FIG. 3 is a side view of the same, and FIG.
L(b) is a plan view and side view showing the connection means with the container; FIG. 5 is a perspective view showing the relationship between the cargo handling device and the drive means; FIG. 6 is a front view of the drive means; and FIG. A side view of the device, FIGS. 8(a) and (b) are explanatory views of the operation of the driving means, and FIG.
The figure is a hydraulic circuit diagram of a hydraulic cylinder, Figure iii is a perspective view showing the mechanical parts of the stop detection device, Figure 11 is a block diagram of the same as above, and Figures 12 (a), (b), (c) (( j) is a line diagram showing the signal processing state in the stop detection circuit, and Figure 13 is a 10-step diagram showing the cargo transport process procedure. Explanation of main drawing symbols 3... Base 6... Minor equipment 7... Drive means 23... Control device 26...
Mass I-26a...Outer mast 261), 26c
, 26d - Inner V strike 27... Mast drive means

Claims (1)

[Scope of Claims] <1> A base, a cargo handling device mounted on the base and capable of moving forward and backward, and an IT system that moves the cargo handling device in the front and back direction.
It is equipped with a control device that controls the forward and backward movement of the cargo handling device, and a control device that controls the forward and backward movement of the cargo handling device.
/jrot' is an object conveyance device, and the driving means includes:
One end is connected to the base side, (I!! The ends are connected to the cargo handling equipment and can be extended and contracted back and forth, and the mast drive device that controls the mast in a telescopic manner. (2) The mast consists of an outer mast fixed to the base side, a stowed state arranged in multiple stages on the outer mast.L, and a forwardly protruding state!: operating state The cargo transporting device according to claim 1, characterized in that it consists of a plurality of inner masts that are movable back and forth. (3) The mast drive device moves the lowest inner mast back and forth. 3. The cargo conveying device according to claim 2, comprising a hydraulic cylinder that is freely controlled and a chain that pulls the inner mast at a higher temperature in accordance with the back and forth movement of the inner mast.