JPS6137174B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveying device equipped with a conveying traveling body (such as a trolley) that is propelled along a fixed path by an endless rotating body such as a chain.

In general, this type of transport device has a large number of transport vehicles connected at regular intervals, and at a specific location, only the transport vehicle that reaches this specific location stops for loading and unloading. I can't do it. Therefore, the applications are limited to cases where it is possible to load and unload cargo even in a state of continuous movement, or cases where it is possible to intermittently stop all the conveyance vehicles on the conveyance route. However, the method of intermittently driving the endless rotating body for driving itself is not practical due to problems such as stop position accuracy and inertia, and is especially problematic when the total length of the path is long. Of course, there are also known conveyance devices that can automatically stop the conveyance traveling body at a specific location while continuously moving the driving endless rotary body. Not only is it expensive as a whole because it is required across the board, but even if the conveyor traveling body is stopped for a short time to load and unload a load, the engagement position with the endless rotating body for driving when re-driving is difficult. It will shift backward, and the distance from other conveyance vehicles will change.

The present invention has been made in order to solve the above-mentioned problems, and while continuously moving the driving endless rotating body, it automatically moves only the load supporting part of the conveying traveling body when it reaches a specific location. The object of the present invention is to provide a conveyance device which can be temporarily stopped and can carry out the conveyance operation with the distance between the load supporting parts of each conveyance traveling body always being constant.

That is, the conveying device according to the present invention has a load support that is movable back and forth within a certain range in the same direction as the traveling body, which is propelled along a fixed traveling path by an endless rotating body such as a chain. and a locking means for locking the movable body at the front end position side of the traveling body in the traveling direction, and the locking action of the locking means is provided at the loading/unloading place in the traveling route. and a releasable stopper that stops the movable body from moving forward together with the traveling body and moves only the traveling body forward; The present invention is characterized in that a movable body return operation means is provided for returning the movable body to the front end position side where it is locked by the locking means.

In such a conveying device of the present invention, when the traveling body reaches the loading/unloading place, the movable body is unlocked from the traveling body by the unlocking operation means, and the stopper is to stop the movable body from moving forward together with the traveling body,
By moving only the traveling body (moving the movable body backward relative to the traveling body), only the movable body can be stopped at the loading/unloading location while the traveling body is continuously moved.

This stoppage of the movable body can be continued until the movable body reaches the rear end of the range of reciprocating movement with respect to the traveling body, so loading and unloading of the load from the load support part of the movable body can be carried out during this time. I can do it.

If the stopper is released before the movable body reaches the rear end of the reciprocating range with respect to the traveling body,
The movable body moves forward again together with the traveling body while being located on the rear end side of the traveling body. At the location where the movable body return operation means is provided, the movable body is again moved relative to the traveling body to a position on the front end side of the traveling body by the operating means, and is locked by the locking means. Fixed to the running body.

Note that loading and unloading the load on the load support portion of the movable body can be performed manually, but when the movable body is provided with load/unloading means such as a roller conveyor driven by power, The movable body is
When the vehicle is unlatched to the traveling body by the lock release operation means and moved backwards relative to the traveling body by being stopped from moving forward together with the traveling body by the stopper,
If the movable body is provided with a drive wheel that is forcibly rotated by the relative movement force, and the drive wheel is configured to drive the loading/unloading means, the movable body or the traveling body is provided with a loading/unloading means. There is no need to install a power source to drive the

Preferred embodiments of the present invention will be described below based on the attached illustrative drawings. In FIGS. 1 to 3, reference numeral 1 indicates a guide rail installed along the conveyance path, and reference numeral 2 indicates a running body suspended from the guide rail 1 by trolleys 3 at two locations, front and rear. A large number of these traveling bodies 2 are used, and each of them is connected to an endless chain 4 for driving at a constant interval. The traveling body 2 also serves as a movable body guide rail 5 over its entire length. A movable body 6 is movably suspended via wheels 7 from the rail 5 extending in the same direction as the traveling direction, and a load support portion 9 is connected to the movable body 6 via a support 8. ing. Reference numeral 10 denotes a loading/unloading roller conveyor provided in the load supporting section 9, and is capable of transferring loads in the horizontal and lateral directions orthogonal to the traveling direction. A drive wheel (sprocket wheel) 12 is pivotally supported on the movable body 6 via drive shafts 11 in left and right lateral directions, and an endless chain 14 that engages with this drive wheel 12 runs through idlers 13 at two locations, front and rear. It is hung between gear wheels 15 and 16 that are pivotally supported at two locations on the front and rear of the body 2. One of the gear wheels 15 is configured so that it can be rotated counterclockwise in FIG. 1 by a one-way rotation clutch 15a, but cannot be rotated clockwise. The drive shaft 11 passes through a housing 17, and the other end thereof and an intermediate shaft 18 are interlocked and connected via a speed-increasing winding transmission means 19, and the intermediate shaft 18 and the roller conveyor 10 are connected to a winding transmission. They are interlocked and connected via means 20 and bevel gear 21.

As shown in FIG. 4, the drive shaft 11 is constantly braked by a brake means 22 provided in the housing 17, and a brake release push rod 23 of the brake means 22 extends forward and A push portion 24 is attached to its outer end protruding from 17. 25 is a locking means, which includes a locking pawl 26 attached near the front end of the traveling body 2, a stopper 28 provided with a buffer body 27, and a housing 1.
a locking pawl 29 that protrudes upward from 7 and is movable up and down;
The locking pawl 29 is configured with a spring 30 that biases the locking pawl upward to the locking position, and when the movable body 6 is moved to the front end position where it abuts the stopper 28, the locking pawl 29 is a locked pawl. 26 to fix the movable body 6 to the traveling body 2.

Cam roller 3 attached to the lower end of the locking claw 29
1 engages with a cam groove 33 of a plate 32 attached to a brake release push rod 23 of the brake means 22, and moves the push rod 23 rearward against a spring 34, thereby releasing the drive shaft of the brake means 24. 11 is released, the locking pawl 29 is pulled down against the spring 30 and is disengaged from the locking pawl 26.

As shown in FIGS. 1 to 3, the loading and unloading area is equipped with a loading conveyor 35 or an unloading conveyor 36 connected to the roller conveyor 10.
A stopper 37 is provided to stop the movable body 6 from moving forward. This stopper 37 is rotated around a longitudinal axis 39 by a power cylinder 38, and when oriented horizontally and laterally, it faces a pressed member 40 attached to the front end of the housing 17, as shown in FIG. do. This pressed member 40 is a push part 24 of the brake and lock release push rod 23.
It has a recess 41 into which it fits. That is, the stopper 37 presses the push rod 23 against the spring 34 via the push portion 24 before coming into contact with the pressed member 40.
It is used as both a lock release operation means for the lock means 25 and a brake release operation means for the brake means 22.

As shown in FIG. 5, on the lower side of the loading and unloading place, there is an upper part of the endless chain 14 hanging on the traveling body 2 that is connected to and disengaged from the upper part of the endless chain 14 which is opposite to the part that engages with the drive wheel 12. A movable body return operating means 43 with a free gear wheel 42 is provided. Said tooth ring 42
is fixed to the tip of an arm 45 which is moved up and down by a power cylinder 44, and therefore the toothed ring 42 functions as a fixed pawl that engages with the endless chain 14. Reference numeral 46 denotes a guide that supports a portion of the endless chain 14 with which the toothed ring 42 engages.

Next, the method of use and operation will be explained. By the continuous rotation of the endless chain 4, the traveling body 2 is guided by the guide rail 1 and moves continuously, and the movable body 6 is moved to the first
As shown in the figure, it is located at the front end position of the traveling body 2 and is locked by a locking means 25 as shown in FIG. When loading a load onto or carrying out a load onto the load support section 9 that is moving together with the traveling body 2 in this way, the corresponding conveyor 3
Immediately before the traveling body 2 to be worked arrives at a predetermined loading/unloading location equipped with a loading/unloading area 5 or 36, a stopper 37 belonging to the loading/unloading area is rotated to a braking position by a power cylinder 38. make it move. As a result, the push portion 24 of the movable body 6 that is locked to the traveling body 2 comes into contact with the stopper 37, and the push rod 23 is first moved backward against the spring 34, and the drive shaft 11 of the braking means 22 At the same time, the braking of the drive wheel 12 is released and the drive wheel 12 becomes free to rotate, and at the same time, the locking pawl 29 descends against the spring 30 due to the action of the cam groove 33 and the cam roller 31, and the locking pawl 29 moves downward to the locked state. The movable body 6 is released from the claw 26 and becomes freely movable. Thereafter, the pushing part 24 is fitted into the recess 41 of the pressed member 40, and the stopper 37 comes into contact with the pressed member 40. Therefore, the forward movement of the movable body 6 is stopped, and only the traveling body 2 moves forward.

When the movable body 6 is stopped and stopped from moving forward by the stopper 37 in this way, the roller conveyor 10 for loading and unloading the load on the load support section 9 is moved as shown by the imaginary line in FIG.
The position of the stopper 37 is set so that the stopper 37 is connected to the conveyor 35 or 36.
Also, in this state, between the conveyors 10 and 35 or 1
In order to reduce the gap between 0 and 36 and prevent the conveyor 10 from rolling, a
A guide rail 47 whose entrance part is open in the shape of a flap can be attached parallel to the running direction, and a guide roller 48 that fits into the guide rail 47 can be provided on the floor side.

By the forward movement of the traveling body 2 after the movable body 6 is stopped by the stopper 37, the drive wheel 12 engaging the endless chain 14 is rotated in the direction shown by an arrow 49 in FIG. That is,
Since one toothed wheel 15 that hangs the endless chain 14 cannot rotate clockwise in FIG. Therefore, the drive wheel 12 is forced to rotate by moving relative to the chain 14. The rotation of this drive wheel 12 is caused by the drive shaft 1
1. It is transmitted to the roller conveyor 10 via the speed-increasing winding transmission means 19, the intermediate shaft 18, the winding transmission means 20, and the bevel gear 21, and the direction in which each roller pulls in the load from the conveyor 35 or on the roller conveyor 10. The load is driven in the direction to send the load onto the conveyor 36. Therefore, at this time, the conveyor 35 or 36
When activated, cargo will be automatically loaded and unloaded.

When the automatic loading and unloading of the load is completed, the movable body 6 has reached the rear end position of the traveling body 2, as shown in FIG. At this time, the stopper 37 is retracted by the power cylinder 38 to the position shown by the solid line in FIG. 2, allowing the movable body 6 to move forward together with the traveling body 2. As the stopper 37 is retracted, the push rod 23 shown in FIG. 4 is returned to its original position by the spring 34.
The braking means 22 brakes the drive shaft 11 again to prevent the rollers of the roller conveyor 10 from idling and to fix the drive wheels 12. Further, the locking claw 29 is connected to the spring 3
0 to return to the locking position. When the traveling body 2 moves forward in such a state and the movable body return operating means 43 is positioned above the upper path starting end of the endless chain 14, the arm 4 is moved by the power cylinder 44.
5 is lowered to engage the fixed gear ring 42 with the endless chain 14, the endless chain 14 is forcibly rotated counterclockwise in FIG. 5 as the traveling body 2 moves forward (the one-way rotation clutch 15a allow this counterclockwise rotation). Since the drive wheel 12 that engages with the endless chain 14 is fixed by the braking means 22, the movable body 6 is moved integrally with the endless chain 14 toward the front end of the traveling body 2, and the movable body 6 is moved at the front end position. When the movable body 6 comes into contact with the buffer body 27 of the stopper 28, the locking pawl automatically engages with the to-be-latched pawl 26, and the movable body 6 is returned to its original position and fixed to the traveling body 2. At this time, the fixed toothed ring 42 may be configured to come off backward from the endless chain 14, or the toothed wheel 42 may be released upward from the endless chain 14 using the power cylinder 44.
Note that if the tooth ring 42 is not fixed to the arm 45 and is supported so that it can rotate when it receives a rotational force above a certain level via a torque limiter, high accuracy can be achieved in setting the timing for lifting and lowering the arm 45. Since this is no longer required, control can be easily performed.

Also, in order to prevent the push rod 23 from moving in the brake release direction so that the locking pawl 29 automatically engages with the locked pawl 26, the locking pawl 29 and the elevating rod portion having the cam roller 31 are separated, and the Preferably, only the downward movement of the lifting rod is transmitted to the locking pawl 29, and the downward movement of the locking pawl alone is not transmitted to the cam roller 31.

FIG. 6 shows another embodiment, in which the traveling body 2
A rack gear 50 is attached to the drive shaft 11 parallel to the running direction thereof, and a pinion gear 52 meshing with the rack gear via a one-way rotating clutch 51 is attached to the drive shaft 11.
is installed. In addition, gear wheels 53, 5 are provided on the traveling body 2.
The endless chain 55 suspended by the chain 4 is connected to the movable body 6 by a fixing means 56, and an engaged piece 57 is attached to the upper path portion of the endless chain 55. In this embodiment, the braking means 22 for the drive shaft 11 can be omitted.

That is, only the rotation of the pinion gear 52 when the movable body 6 moves rearward with respect to the traveling body 2 is transmitted to the drive shaft 11 by the one-way rotating clutch 51.
When the movable body 6 returns to the front, the pinion gear 52 freely rotates. Further, due to the reciprocating movement of the movable body 6, the endless chain 55 repeatedly rotates in forward and reverse directions. Therefore, as the movable body return operating means, a stopper for the engaged piece 57 may be provided so as to be releasable.

Although the roller conveyor 10 is shown as a loading/unloading means, it is not limited thereto. Furthermore, although the load support section 9 is suspended from the traveling body 2, a floor conveyor configuration in which the load support section is provided above the traveling body 2 may also be implemented.

The present invention can be carried out as described above, and according to the conveyance device of the present invention, a large number of traveling bodies are continuously moved along a fixed path by the endless rotating body for driving, and It is possible to automatically stop only the load support part of a specific traveling body within the vehicle for a certain period of time at a predetermined loading/unloading location, making it possible to load and unload cargo safely and easily. In this case, the load support part can be returned to its original position and moved at a constant distance.

In particular, when the loading and unloading means is configured to be driven using the relative movement force of the movable body with respect to the traveling body, as in the embodiment, it is possible to automate loading and unloading, and moreover, it is possible to automate the loading and unloading from the outside. Since there is no need for a power transmission means or a special power source, it is economical and the fixed equipment is simple.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is a longitudinal rear view, Figure 3 is a cross-sectional plan view, and Figure 4 is a cross-sectional plan view.
5 is a side view of the main part showing a state when the movable body is returned and moved, and FIG. 6 is a side view of the main part showing another embodiment. 2... Running body, 4... Endless chain for driving, 5...
...Movable body guide rail, 6...Movable body, 9...Load support section, 10...Roller conveyor for loading and unloading, 1
2... Drive wheel, 14... Endless chain, 15a...
One-way rotation tarpaulin, 22...braking means, 23...
... Brake release push rod, 25 ... Locking means, 26 ... Locked pawl, 28 ... Stopper, 2
9... Locking claw, 31... Cam roller, 33... Cam groove, 35... Loading conveyor, 36... Loading conveyor, 37... Stopper, 38, 4
4...Power cylinder, 40...Pressed member,
42...Gear ring, 43...Movable body return operation means.

Claims (1)

[Scope of Claims] 1. A movable load-supporting movable member that can reciprocate within a certain range in the same direction as the traveling direction of the traveling body, which is propelled along a fixed traveling path by an endless rotating body such as a chain. and a locking means for locking the movable body at a front end position side of the traveling body in the traveling direction,
At the loading/unloading location on the traveling route, there is provided a lock release operation means for releasing the locking action of the locking means, and a lock release operation means for stopping the forward movement of the movable body together with the traveling body so as to stop the moving body from moving forward together with the traveling body. and a releasable stopper for moving the movable body, and a movable body return operating means for returning the movable body to the front end position where it is locked by the locking means is provided below the loading/unloading place. A conveying device characterized by: 2. The movable body moves backward relative to the traveling body by being unlatched from the traveling body by the unlocking operation means and stopped from moving forward together with the traveling body by the stopper. 2. The apparatus according to claim 1, wherein the movable body is provided with a drive wheel that is forcibly rotated by the relative movement force thereof, and the movable body is provided with a main loading/unloading stage driven by the drive wheel. .