JPH03128821A - Loading device - Google Patents

Abstract

PURPOSE:To make the whole of a loading device light and compact by moving a carrying base singly in a fixed section and through a driving means with a movable frame in another section to reduce the moving distance of the carrying base to about one half of a distance required for load feeding. CONSTITUTION:A carrying base 5 is pulled by a driving means to make an endless belt 19 rollingly move, and thereby moved before and behind on a movable frame 6. In this case, the carrying case 5 moves singly in a section equivalent to about one half of the movable frame 6 and with the movable frame 6 in a remaining section. In a working cycle, a moving distance of the carrying base 5 which is moved by the endless belt 19 being in charge of both carrying and travelling is satisfied by about one half of the whole of load feed distance. Thus a loading device can be formed to be wholly light and compact.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a vehicle-mounted loading device.

[Prior Art and Problems to be Solved by the Invention] Conventionally, conveyors, cranes, forklifts, and the like have been used to load and unload relatively large loads onto vehicles, freight cars, and the like. However, depending on the load, these loading devices may not be suitable, and since they are too large to be mounted on a vehicle, they have to be prepared at the loading and unloading site, which poses practical problems. There was a need for a vehicle-mounted automatic loading device that could be compactly stored in a vehicle.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a telescopic and compact loading device that can be mounted on a vehicle, thereby solving the above-mentioned conventional problems. It's about solving.

[Means to solve the problem]

The present invention achieves the above object by providing a conveyance platform having a running/load conveyance means formed by extending an endless belt between front and rear wheels, a running path of the conveying platform, and a running path formed along the outer surface of the running path. a movable frame having a guide rail extending longer than the conveyance table in the axial direction, having a stopper for the conveyance table at one end, and a bumper on the other end with which the conveyance table is locked; and a frame body that supports the movable frame in a movable manner, the frame body comprising a plurality of pulleys disposed at intervals in the axial direction on opposing inner surfaces with the movable frame interposed therebetween and engaged with the guide rail. A fixed frame extending to approximately the same length as the movable frame, a driving means provided on the fixed frame for connecting the conveyance platform on the movable frame and moving it back and forth, and a movement limit position of the movable frame in the front and rear directions. It is characterized by comprising a stop means for detecting and stopping the drive of the drive means.

The present invention also provides a conveyance platform having a running/load conveyance means formed by extending an endless belt between front and rear wheels, a running path of the conveying platform, and a guide rail formed along the outer surface of the running path. and extends longer than the conveyance table in the axial direction, and includes a stopper for the conveyance table at one end,
and one movable frame having a bumper on the other end to which the conveyance platform is locked, and yet another movable frame supporting this one movable frame, the side walls facing each other with the supported movable frame in between. A plurality of pulleys that engage with guide rails of the supported movable frame are arranged at intervals in the axial direction on the inner surface, and guide rails are provided on the outer surface of the side wall, so that the movable frame is substantially the same as the supported movable frame. at least one other movable frame that is extended in length and is provided with stopping means at the front and rear ends of which the supported movable frame is locked; and a lowermost movable frame among the other movable frames. A fixed frame having a plurality of pulleys that engage with a guide rail arranged at intervals in the axial direction on opposing inner surfaces, extending to approximately the same length as the guide rail, and having a bumper at the rear end. , a drive means provided on the fixed frame, which connects and drives the transport platform on the first movable frame back and forth; and a drive means that detects the movement limit position of the first movable frame and stops the drive of the drive means. The special drive means is characterized by comprising sprockets disposed at the front and rear ends of the fixed frame, an endless chain suspended between the sprockets, and a stop means for stopping the sprocket rotation. The device may include at least a driving motor.

Further, the driving means includes a screw shaft rotatably supported at a front end and a rear end of the fixed frame, respectively;
It is also possible to include a drive nut screwed onto the screw shaft and a motor for driving the rotation of the screw shaft.

[Function] The conveyor table is pulled by the driving means, the endless belt rolls, and the conveyor table moves back and forth on the movable frame.

At this time, the transport platform moves alone in a section corresponding to about half of the length of the movable frame, and moves together with the movable frame in the remaining section. In the above operation cycle, the distance traveled by the conveyor platform by the endless belt that serves both conveyance and travel is approximately half of the total transport distance. Therefore, the entire loading device can be made lightweight and compact.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

The loading device of this embodiment is an example of a case where it is mounted on a hearse or sleeping car of a shrine type, a lotus type, a hang type, etc., and is applied to loading and unloading coffins and the like. By the way, when loading a coffin or other object into a hearse at a funeral, it is especially important to load it quietly without compromising the dignity of the corpse, and to secure it in the most stable condition depending on the differences in shape and size, so that it can be transported safely. It is strongly requested.

FIG. 1 shows a perspective view of the loading device 1 in an extended state.

This loading device 1 is installed, for example, on the floor of the hearse chamber 3 of a shrine-type hearse 2 shown in FIG. It is mounted so that it protrudes.

Hereinafter, first, the configuration will be explained according to the drawings. The loading device 1 in FIG.
It has a telescopic three-stage structure consisting of one movable frame 6 and 1 that supports the movable frame 6 so that it can travel, and a fixed frame 7 that supports the movable frame 6 so that it can travel.

As shown in detail in FIGS. 3 to 5, the conveyance table 5 has a plurality of (
In the figure, five wheels 10 on each side are mounted at intervals in the axial direction. The axle 11 is inserted through the side plate 9 and fixed with nuts 12.

Only the rear R side wheel 10a is a tension roll that can move within a predetermined range in the axial direction. That is, a cylindrical holder 14 is fixed to the side plate 9 of the body 8 with screws 13.
A tension adjustment device 18 is provided, which includes a tension bolt 16 that is inserted through the bolt and fixed at an arbitrary position with a nut 15, and a slide plate 17 that is integrally fixed to the tip of this bolt. Wheels l on plate 17
The axle 11a of Oa is fixed, and its position can be adjusted in the axial direction through an elongated portion (not shown) provided on the side plate 9.

An endless belt 19 made of synthetic rubber or plastic and having anti-slip irregularities on its surface is stretched between the rear R-side wheel 10a and the front F-side wheel 10b. The endless belt 19 is tensioned by moving the tension roll 10a in the axial direction using the tension adjustment device 18.

The wheels 10 and the endless belt I9 are as described below.
The transport table 5 functions both as a traveling means and as a means for transporting objects such as coffins.

A bumper 20 made of an L-shaped plate is attached to the front end surface of the body 8 of the carrier 5 with screws 21. Both the bumper 19 and the body 8 are provided with notches, and by aligning these notches, an escape hole 22 is formed in the front end surface of the body 8 to avoid interference with a movable hook 31 for locking, which will be described later. There is.

In addition, on the lower front surface of the body 8, along the approximate center line,
A connecting plate 23 having a connecting hole 23a with a chain 56 of a driving means, which will be described later, is fixed with a screw 24 and protrudes.

As shown in FIGS. 6 and 7, the movable frame 6 has running paths 2 for the endless belt 19 of the conveyor table 5 on both sides.
5 and a guide rail 26 formed along the outer circumferential surface of the running path 25. The length thereof is, for example, approximately twice the length of the conveyor table 5. The running path 25 of this embodiment is formed by arranging two L-shaped steel members in a pair facing inward with a width interval of approximately the width of the conveyor table 5 apart. Further, the guide rail 26 is formed by integrally fixing a steel material having a substantially C-shaped cross section to the outer surface thereof by means such as welding.

The rear ends of the two L-shaped steel members are connected by a grip rod 27, and the front ends are connected by a bumper plate 28. Two guide rollers 29 as stoppers for the conveyance table 5 are further attached to the rear end. On the other hand, a movable hook 31 is attached to the inside of the bumper plate 28 at the front end. The details of this movable hook 31 are shown in FIGS.
0". The mounting is fixed to the bumper plate 28 with screws 32, and the shaft body 34 is supported at both ends by brackets 33.
A sleeve 35 is inserted through the sleeve 35 so as to be freely rotatable, and a hook plate 37 and an operating plate 38 are protruded from the sleeve 35 at right angles in the radial direction. A compression coil spring 39 is installed between the actuation plate 38 and the bumper plate 28 using a screw 40, and the biasing force of this spring 39 keeps the hook plate 37 in a horizontal position at all times. ing. The hook plate 37 has a hook receiver 48 erected on the floor of the fixed frame 7, which will be described later.
It has a notch 42 that engages with the blade, and an inclined surface 43 is provided at the tip.

The fixed frame 7, as shown in FIGS. 11 and 12,
On a base plate 44 fixed on the vehicle, two Heath frames 45 made of L-beams are arranged facing each other with an inner diameter interval approximately equal to the width of the movable frame 6 and fixed thereto. . A pulley 46 with which the guide rail 26 of the movable frame 6 engages is provided on the opposing inner surface of the base frame 45.
A plurality of them (five on each side in the figure) are installed at intervals in the axial direction. The overall length is approximately the same as the guide rail 26 of the movable frame 6, and a hanger 47 is provided upright at the front end. At an intermediate position of the base plate 44 forming the floor of the fixed frame 7, a hook receiver 48 is installed via a bracket 49 in correspondence with the movable hook 31 of the movable frame 6.

The base plate 44 is further provided with a driving means 51 for connecting the conveying table 5 and driving it back and forth. The drive means 51 of this embodiment is installed on the lower front side of the head plate 44 as shown in FIG. a drive sprocket 54 fixed to the output shaft of the reducer 52 and arranged on the upper surface side of the base plate 44; and an adjustment bracket whose position can be adjusted by slightly displacing it in the axial direction at the front of the upper surface of the base plate 44. It includes a tension sprocket 55 disposed via a sprocket 55A, and a chain 56 stretched between both sprockets 54 and 55.

This chain 56 is engaged with the connection plate 23 on the lower surface of the conveyance table 5 described above. Note that the rear tension sprocket 55 is used with a protective cover 60 attached.

In addition, limit switches 57 and 58 are respectively disposed on the inner surface of the front hanger 47 and near the hook receiver 48 on the upper surface of the base plate 44 on the fixed frame 7. It functions as a stopping means that detects a bumper plate 28 at a certain rear end and automatically stops the driving of the driving means 51 (FIG. 12). The front glue switch 57 is used to stop feeding, and the intermediate glue switch 58 is used to stop feed. Both are set to turn on and off when the movable frame 6 comes into contact with and leaves the bumper plate 28. It should be noted that both the intermediate position elevator switch 58 and the hook receiver 48 are set at a level that does not interfere with the conveyor table 5. Although not shown, the limit switches 57 and 58 and the electric motor 5
3 is connected to a power source and a handy type switch box via a relay box.

A holder 61 for fixing a loaded coffin or the like is disposed at the rear end of the upper surface of the base plate 44 in this embodiment, in line with the tension sprocket 55. As shown in Fig. 14, a large number of stopper inserts 663 are drilled in a row in the axial direction at predetermined intervals in a box-shaped body part 62 that is long in the axial direction. It is something. The six 64 at the lower end is a mounting hole into which an insertion portion 65A of an extension holder 65 provided to accommodate an oversized coffin is inserted. Above stopper insertion 663
The loading stopper 66 that is inserted into the
A screw shaft 70 is screwed perpendicularly to the upper end of the shaft 69 having a flange 68 and a screw shaft 70, and a coffin presser disc 71 is attached to one end of the screw shaft 70, and an operation knob 72 is attached to the opposite end. It is fixed and configured.

The movable frame 6 is assembled to the fixed frame 7 configured as described above, and the transport platform 5 is further incorporated into the movable frame 6 to form a loading device l as shown in FIG. 15. . The figure shows the shortest loading completion state (or initial standby state).

Next, the action will be explained.

FIG. 16 shows the operation cycle of the loading device 1, where ■ indicates the loading completion state (or initial standby state), ■ indicates the unloading intermediate state, and ■ indicates the unloading completed state (or loading waiting state).
, ■ is an intermediate state of import.

In the initial standby state of (2), when the transport table movement switch of the hand switch box (not shown) is turned to the feed direction, the electric motor 53 of the drive device 51 is started, and the drive sprocket 54 is rotated in a predetermined direction via the reducer 52. drive

The conveyance platform 5 is pulled by a chain 56 toward the rear R side. The endless belt 19 of the transport platform 5 is connected to the movable frame 6
The transport platform 5 moves toward the rear R side by rolling on the running path 25. Eventually, the endless belt 19 of the conveyor table 5 comes into contact with the guide roller 29 at the tip of the movable frame 6 (intermediate state of unloading (■)). Thereafter, the conveyance table 5 and the movable frame 6 move together at the same time. Then, when the bread bubble plate 28 of the movable frame 6 comes into contact with the intermediate lever switch 58 and turns it on, the electric motor 53 is stopped and the movement of the conveyance table 5 and the movable frame 6 is stopped, resulting in the loading standby state (2). At this time, substantially simultaneously, the hook receiver 48 collides with the inclined surface 43 of the movable hook 31 provided on the movable frame 6. As a result, the hook plate 37 of the movable hook 31 is once pushed up, and then elastically restored by being pushed by the coil spring 39, and the hook plate 37
A hook receptacle 48 is engaged with the notch 42 .

In this state of 1] 1, one end of the coffin, etc., carried by a manual worker is placed on the endless belt 19 of the conveyance table 5. At that time, even if the carrier 5 is pushed forward, the movable hook 31
Since the movable frame 6 and the hook receiver 48 are engaged with each other, there is no possibility that the movable frame 6 will move.

After confirming that the front part of the coffin is placed on top of the coffin, turn the transport platform movement switch on the hand switch box to the feeding direction (loading direction), the electric motor 53 of the drive device 51 will start in the reverse rotation direction, and the transport platform 5 will move to the front. Chain 56 toward the F side
Towed by. As a result, the endless belt 19 begins to move in the opposite direction to the previous direction, and runs on the travel path 25 of the movable frame 6 while feeding the coffin on which the end portion is placed.

That is, the endless belt 19 simultaneously functions as a coffin conveyor belt and as a traveling belt.

The hamper 20 at the front of the conveyance platform 5, which continues to move forward, eventually collides with the operating plate 38 of the movable hook 31, as shown in FIGS. 17 and 18. As a result, the hook plate 37 of the movable hook 31
is retracted upward, and the engagement with the hook receiver 48 is released (the intermediate loading state of ■). Thereafter, the movable frame 6 is pushed by the damper 20 that is in contact with the bumper plate 1, 28,
It moves forward integrally with the transport platform 5 that transports the coffin.

Eventually, the bumper plate 28 of the movable frame 6 is attached to the rear end humper 47 of the fixed frame 7 and is activated by contacting the ξ seat switch 5, the electric motor [53] is stopped, and the carriage 5 and the movable frame 6 are moved backward. The machine stops and enters the loading complete state (■).

When the coffin has been carried into the car, set the load stopper 66 on the holder 61 according to the size of the coffin, and then turn the operation knob 72.
The coffin is held down by the disc 71 and fixed in place.

When unloading, as above, if you go from state I through the intermediate state to state II[ when unloading is complete, the endless belt 1
9 can be easily unloaded.

If the above cycle is to be performed manually due to malfunction of the automatic drive means 51 or other reasons, the automatic/manual switching lever of the speed reducer 52 is switched to manual mode. In this case, the conveyor table 5 is moved manually by gripping the grip bar 27. Loading device 1 in state I
When the conveyance table 5 is pulled out manually, the conveyance table 5 initially runs alone on the movable frame 6, and when it is latched to the guide roller 29, the movable frame 6 is moved along, as in the case of electric drive. Ru. When the movable frame 6 moves for a predetermined distance, the bumper plate 28 is activated by the smit switch 58.
However, the switch does not operate. However, at this time, since the movable hook 31 of the movable frame 6 engages with the hook receiver 48 of the fixed frame 7, the transport platform 5. Both movable frames 6 can be stopped at predetermined movement limit positions. During manual feeding, the engagement between the movable hook 31 and the hook receiver 48 is released in the same manner as during automatic operation.

Above is theory 1! As mentioned in II, in the above-mentioned operation cycle, the movement distance of the conveyor platform 5 by the endless belt 19 which serves both conveyance and running is approximately half of the total transport distance, so the entire loading device 1 can be made lightweight and compact. Is possible.

The movement of the conveyance table 5 and the conveyance of the coffin are carried out by an endless heel 19 made of synthetic rubber or plastic that serves both conveyance and travel, so that it can be carried out quietly and stably. In addition, the belt surface has a non-slip structure with unevenness, so it can be transported safely.

Transport platform 5. Both the movable frame 6 and the fixed frame 7 can be easily manufactured using shaped steel or plate materials, and can be mass-produced at low cost.

In addition, in the above embodiment, a case was described in which the device is mounted on a hearse to load coffins, etc., but the present invention is not limited to this, and it can also be suitably used as a general cargo loading device by being mounted on a truck or other vehicle. Of course.

Further, although the holder for fixing and holding the loaded items is shown as being manually operated, it may also be an automatic type.

Moreover, although the extensible structure with only one movable frame has been described, the present invention is not limited to this, and a multi-stage extensible structure using a plurality of movable frames is also possible. In that case, for the first movable frame that directly supports the conveyance table in a movable manner, the second movable frame that supports the first movable frame, and the third movable frame that supports the second movable frame.
The configuration of the movable frame, etc. is a 114-frame structure that is a compromise between the movable frame 6 and the fixed frame 7. That is, on the inner surfaces of the side walls facing each other across the supported movable frame,
A plurality of pulleys that engage with guide rails of the supported movable frame are arranged at intervals in the axial direction.

On the other hand, a guide rail that engages with the pulley is disposed on the outer surface of the side wall and has approximately the same length as the supported movable frame. A locking means for locking the supported movable frame at the forward limit and a locking means for locking the supported movable frame at the backward limit are provided at the front and rear ends, respectively.

The driving means provided on the fixed frame connects the transport platform on the first movable frame, and the stopping means for stopping the driving means is activated by detecting the movement limit position of the first movable frame. I'll do what I do.

In addition, instead of the drive means 51 using the chain of the above embodiment, the drive means includes screw shafts rotatably supported at the front end and rear end of the fixed frame, respectively, and a conveyor platform that is screwed onto the screw shafts. a drive nut attached to the
A screw drive system including a motor for driving the rotation of the screw shaft may also be used.

〔Effect of the invention〕

As explained above, according to the present invention, there is provided a conveyance table having an endless belt for traveling and transporting cargo, and one or more movable frames supporting the conveyance table in a movable manner.
This movable frame and a fixed frame supporting the movable frame in a movable manner are telescopically stacked in multiple stages, and the transport platform is moved back and forth by itself in a certain section and accompanied by the movable frame in multiple sections via a drive means. As a result, the moving distance of the conveyor table is approximately half of the required transport distance, and the entire apparatus becomes lightweight and compact. As a result, it is possible to provide a telescopic and compact loading device that can be mounted on a vehicle.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a side view of a hearse equipped with the loading device shown in FIG. 1, FIG. 3 is a plan view of the carrier, and FIG. Figure 5 is ・IV- of Figure 4.
6 is a plan view of the movable frame, FIG. 7 is a side view of the movable frame, FIG. 8 is a side view of the movable hook shown in the direction of the ■-■ arrow in FIG. 6, and FIG. 9 is a side view of the movable hook. A plan view showing main parts in cross section, FIG. 10 is a view taken along the line X-X in FIG. 6, FIG. 11 is a plan view of the fixed frame, FIG. 12 is a side view of the same, and FIG. 13 is a portion of the fixed frame. A perspective view, FIG. 14 is an exploded perspective view of the load fixing means, FIG. 15 is a perspective view of the loading device in a contracted state,
Fig. 16 is an explanatory diagram of the operation cycle of the loading device, Fig. 17,
FIG. 18 is an explanatory diagram of the operation of each movable hook. In the figure, l is a loading device, 5 is a transport platform, 6 is a movable frame,
7 is a fixed frame, IO is a wheel, 19 is an endless belt, 26 is a guide rail, 28 is a bumper plate, 29 is a guide roller (stopper), 51 is a driving means, 57.5
8 is a stop means (rigot switch).

Claims (4)

[Claims] (1) It has a conveyance platform having a means for traveling and transporting cargo by extending an endless belt between front and rear wheels, a running path of this conveying platform, and a guide rail formed along the outer surface of the running path. a movable frame that extends longer than the conveyance platform in the axial direction, is provided with a stopper for the conveyance platform at one end, and a bumper on which the conveyance platform is locked at the other end; and a movable frame that runs on the movable frame. a frame body capable of supporting the movable frame, comprising a plurality of pulleys disposed at axial intervals on opposing inner surfaces with the movable frame in between and engaged with the guide rail, and having approximately the same length as the movable frame; a fixed frame extending from the movable frame; a driving means provided on the fixed frame for connecting the conveyance platform on the movable frame and moving it back and forth; A loading device comprising a stop means for stopping the drive. (2) It has a conveyance platform having a means for traveling and transporting cargo by extending an endless belt between front and rear wheels, a running path of this conveying platform, and a guide rail formed along the outer surface of the running path. one movable frame that extends longer than the conveyance table in the axial direction, has a stopper for the conveyance table at one end, and a bumper on the other end with which the conveyance table is locked; In yet another movable frame that supports a movable frame, a plurality of pulleys that engage with guide rails of the supported movable frame are arranged at intervals in the axial direction on the inner surfaces of side walls facing each other across the supported movable frame. The side wall is provided with a guide rail on the outer surface thereof and extends to approximately the same length as the supported movable frame, and has stop means for locking the supported movable frame at the front and rear ends. at least one other movable frame comprising: a plurality of pulleys that engage with guide rails of a lowermost movable frame of the other movable frames are arranged at intervals in the axial direction on opposing inner surfaces; a fixed frame which is extended to approximately the same length as the guide rail and has a bumper at its rear end; and a transport platform provided on the fixed frame and mounted on the first movable frame for driving it back and forth. A loading device comprising: a drive means; and a stop means for detecting the movement limit position of the first movable frame and stopping the drive of the drive means. (3) The driving means includes at least sprockets disposed at the front and rear ends of the fixed frame, an endless chain suspended between the sprockets, and a motor for driving the rotation of the sprockets. term (
The loading device described in 1) or (2). (4) The driving means includes a screw shaft rotatably supported at the front end and rear end of the fixed frame, a drive nut screwed onto the screw shaft, and a motor for driving the screw shaft rotation. The loading device according to claim (1) or (2).