JPS6293117A - Elevating/transporting device - Google Patents

Abstract

PURPOSE:To simplify the constitution of the device in the caption to facilitate a receiving/unloading work, by providing a pair of upper and lower dogs which catch or release a pusher and cooperate with it on a transport bed after providing said pusher to be projected from a chain so as to set up such constitute as releasing the dogs at the specified position. CONSTITUTION:A pusher 16 fit in a space between an auxiliary dog 21 and a main dog 22 by the drive of a chain 4 while turning down the main dog 22 on a transport bed 1 and in an ascending track 9 the pusher 16 pushes the auxiliary dog 21 to elevate a transport bed 1. Then if a movable cam 41 is projected in a working position at a receiving position, it pushes the cam driven section 31 of the auxiliary dog 21 to oscillate it and thereby the engagement between the pusher 16 and the auxiliary dog 21 is released, resulting in releasing the transport bed 1 at its receiving section. On the other hand, in the descending track 12 the transport bed 1 is supported by the pusher 16 and the main dog 22 and descends at the same speed as that of the pusher 16. By this constitution, it is made possible to facilitate the loading work with a simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a conveyance device equipped with a conveyance platform for conveying objects from an upper cargo receiving position to a lower unloading position on a vertically descending conveyance path.

(Prior art and its problems) As described above, in the conventional IJG feeding device equipped with the vertically descending conveyance path, the conveyance table is directly connected to the drive chain 7, and the upper cargo receiving position and the lower There is a type that is directly connected to the drive chain, which is configured to automatically stop the conveyance platform sequentially at the unloading position, and a type where the conveyance platform is configured to be movable relative to the drive chain only within a certain distance range, and the drive chain is configured to move within a certain distance. Some methods are known in which the conveyance platform is stopped only during movement.6 In the former method, the drive chain must be operated in tact, and the receiving and unloading operations cannot be performed at the same time. There was an inconvenience that it had to be done within the time limit.

In addition, in the latter method, although the drive chain can be operated continuously, there is a fixed time period during which the conveyance platform can be stopped, so the receiving and unloading work is subject to time constraints, similar to the former method. There were some inconveniences. Furthermore, in any of these systems, it is not possible to automatically store the conveyance table rearward from the stop position, so in this respect as well, cargo receiving and unloading operations cannot be carried out freely.

(Means for Solving the Problems) The present invention proposes an elevating conveyance device capable of solving the conventional problems as described above, and its feature is that the conveyor table is driven along the elevating and descending circulation path. A pair of upper and lower dogs are provided on the transport platform to sandwich the pusher projecting from the drive chain from above and below, and the main dog that is on the upper side in the descending path is connected to the pusher that is on the lower dog side. The auxiliary dog on the lower side is configured to be able to engage and disengage from the pusher, and is also provided with a spring that biases the pusher to the engagement position and a cam follower for engagement and disengagement operation, When the auxiliary dog is released from the button shear movement path by acting on the engagement/disengagement operation cam follower, the movable cam for stopping the conveyance table, which can move forward and backward to receive the conveyance table, is moved to the upper cargo receiving position and the lower position of the conveyor descent path. Furthermore, each conveyance table is provided with a storage cam that acts on the engaging/disengaging operation cam driven part of the succeeding conveyance table to detach the auxiliary dog from the pusher movement path, and a storage cam is provided in the conveyance table lowering path. In this case, the opposite ends of the front and rear conveyance tables are configured to abut each other when the storage cam is in operation.

(Function) In the above-mentioned apparatus of the present invention, the pusher of the drive chain is fitted between the upper and lower dogs of the conveyor table in the conveyor table raising path, and the conveyor table is pushed up and moved via the auxiliary dogs. In the descending path of the conveyance table, the conveyance table is received by the pusher via the main dog and moves downward together with the barrel. When stopping the conveyance table, the movable cam for stopping the conveyance table is projected, so that the cam acts on the engaging/disengaging operation cam driven part, and the conveyance table is placed in the ik state in which the auxiliary dog is separated from the buno sawyer movement path. As a result, the carrier is separated from the drive chain and stopped at a predetermined position.

As mentioned above, when the following conveyance table approaches a stopped conveyance table by a certain distance or more, the storage cam of the stopped conveyance table acts on the engagement/disengagement operation cam follower of the succeeding conveyance table, causing the auxiliary dog to move. The pusher is removed from the movement path, and in this state, the conveyance table is placed on the preceding stop conveyance table and stopped. In this way, the conveyance tables are sequentially stopped and stored as long as the preceding conveyance table is stopped.

In this way, for a conveyance table that is stopped on the conveyance table lowering path, the pusher on the drive chain side is
It is possible to move downward by passing the position of the auxiliary dog which is in the detached position when the dog is brought down.

When starting a conveyance platform that is stopped at a stop position, when the button shear reaches under the main dog, the movable cam for stopping the conveyance platform is retracted to release the support of the conveyance platform and at the same time engage the auxiliary dog. By returning to the alignment position, the pusher receives the conveyance table which is now free to descend via the main dog, and the conveyance table descends together with the pusher again.

<Example> An example of the present invention will be described below based on the attached illustrative drawings.

In FIG. 1 and FIG. 2, 1 is a transport platform, respectively,
It has cargo receiving surfaces 2a and 2b on both the upper and lower sides, and is movably supported by a pair of left and right endless guide rails 3 that form a circulation path. Reference numeral 4 denotes a drive chain that rotates along the ascending and descending circulation path of the conveyance platform 1, and is suspended between an upper drive gear 6 that is interlocked with the motor 5 and a lower free rotation gear 7 for take-up. ing. Reference numeral 8 indicates a cargo receiving position set near the lower end of the transport platform ascending path 9; 10 indicates an unloading position set near the upper end of the transport platform ascending path 9; and 11 indicates a position near the upper end of the transport platform descending path 12. The cargo receiving position 13 is a cargo unloading position set near the lower end of the transport platform descending path 12.

As shown in FIGS. 3 to 5, the drive chain 4 is equipped with flanged rollers 15 that fit into a pair of left and right endless guide rails 14, and the conveyor table 1 is raised at regular intervals.
A bushing 16 is provided to protrude toward the li circulation path. In addition, in the conveyance platform ascending path 9 shown in FIG.
As shown in FIGS. 2, 3, and 6, a fixed locking device 18 using a chain is installed beside the moving path of the drive chain 4 via a support frame 17. Said transport platform 1
includes a pair of upper and lower main wheels 19 that fit into the left and right pair of endless guide rails 3, and a steady rest auxiliary roller 20 that comes into contact with the left and right pair of endless guide rails 3, respectively.
, a pair of upper and lower dogs 21 and 22 that sandwich the pusher 16 from above and below, a fall prevention device 23 that engages with the chain-based fixed locking device 18 to prevent the transport platform 1 from descending, and a storage cam 24. It is provided.

Of the pair of upper and lower dogs 2L 22, as shown in FIG. The spring 27 is inserted between the support plate 26 and the support plate 26.
It is held in an engaged position in which it abuts against a stopper 28 attached to. The upper auxiliary dog 21 is pivotally connected between the support plates 26 by a support shaft 29 at a bifurcated base 21a sandwiching the movement path of the pusher 16, and has a surface in the middle portion in the direction of movement of the pusher 16. A roller 30 that comes into contact with the front surface 16a is provided, and a cam follower (roller) 31 for engagement/disengagement operation is provided at the free end in a state protruding to one side. The support plate 26 is biased by a spring 32 interposed between the support plate 26 and the support plate 26, and is held in an engaged position in which it abuts against a stopper 33 attached to the support plate 26.

Note that the pivot shaft 29 of the auxiliary dog 21 is located directly below the roller 30 when in the engaged position, and the pusher 16 moves the auxiliary dog 21 through the roller 30.
When pushed up, the auxiliary dog 21 is configured not to rotate around the support shaft 29 in the detachment direction.

The fall prevention device 23 has a fixed support shaft 35 fixed to a bearing plate 34 connected to the conveyor table 1, as shown in FIGS. 3 and 6.
A toothed wheel 37 pivotally connected to the one-way rotation clutch 36
It consists of The one-way rotation clutch 36 is
When the conveyance platform 1 ascends the conveyance platform ascending path 9, the toothed ring 37 is allowed to rotate in the direction of the arrow in FIG. is to prevent it.

When the following conveyance table 1 approaches within a certain distance as shown by the imaginary line in FIG.
1 to swing the auxiliary dog 21 around the support shaft 29 against the spring 32 in the direction in which the roller 30 separates from the pusher 16. In this way, when the subsequent conveyance table 1 is stopped by the storage cam 24, a pair of left and right rubbers 39 that are close to the left and right rear ends 38 of the preceding conveyance table 1 are attached to the left and right front ends of each conveyance table 1. has been done. Reference numeral 40 denotes the conveyor table 1 so as to be located outside the cam follower (roller) 31 for engagement/disengagement operation.
This is a member to be received at the time of descent, which is provided to protrude from the top in the direction of movement.

At the cargo receiving position 8 and unloading position 10 of the transport platform ascending path 9 shown in FIG.
1 is attached. This movable cam 41 is moved between the illustrated working position and the auxiliary dog 2 by means of a cylinder unit 42, for example.
1 can be moved between the retracted position and the retracted position. Also, the cargo receiving position 1 of the conveyor platform lowering path 12 shown in FIG.
1 and the unloading position 13, there is a movable cam 43 for stopping the conveyance platform which has the same effect as the storage cam 24 on the auxiliary dog 21 of the descending conveyance platform 1, as shown by the imaginary line in FIG. is attached.

As shown in the figure, this movable cam 43 can be moved between the illustrated operating position and a retracted position where the auxiliary dog 21 is returned by, for example, a cylinder unit 44, and when it is in the operating position, there is no stoppage. A conveyance table receiving part 45 that receives the closed conveyance table 1 via a receiving member 40 when the conveyance table 1 is lowered is bent.

Next, to explain how to use and how it works, the drive chain 7
When pusher 4 is rotated in a predetermined direction, pusher 1
6 is fitted between the auxiliary dog 21 and the main dog 22 of each conveyance platform 1 while rotating the main dog 22 against the biasing force of the spring 27, and in the conveyance platform ascending path 9 as shown in FIG. As shown in FIG. 5, the pusher 16 pushes up the auxiliary tongs 27 (roller 30), and the conveyor table 1 is raised upward. In addition, in the conveyor table lowering path 12, as shown in FIG.
16 (roller 30) receives it via the main dog 22, the conveyance table 1 descends at the same speed as the pusher 16.

A movable cam 4 attached to the cargo receiving position 8 of the transport platform ascending path 9
When the movable cam 41 is projected to the operating position as shown by the line in FIG. Then, the auxiliary dog 21 is swung around the support shaft 29 against the biasing force of the spring 32, and the roller 30 is disengaged from the pusher 16, so that the conveyance platform 1 is released from driving at the cargo receiving position 8. . As a result, the carrier 1 tries to fall due to gravity, but since the gear 37 of the fall prevention device 23 can only rotate in one direction that allows the upper limit of the carrier 1 to move, the gear 37 is fixed. It engages with the locked tool (chain) 18 to prevent the transport platform 1 from falling. That is, the conveyance platform 1 automatically stops at the cargo receiving position 8.

After the objects to be transported are thus loaded on the upper cargo receiving surface 2a of the first fastest vehicle 1 which stops at the cargo receiving position 8, the movable cam 41 is moved backward to the retreat position. As a result, the auxiliary dog 21 returns to the engagement position in which it comes into contact with the stopper 33 by the biasing force of the spring 32, so that the pusher 16, which approaches the conveyance table by one distance, engages the auxiliary dog 21 as described above. It is fitted between the main dog 22 and drives the conveyance platform 1 upward again.

Before the conveyance table 1 carrying the object to be transported reaches the unloading position 10 on the conveyance table ascending path 9, the unloading position 10 is
When the movable cam 41 attached thereto is projected to the operating position as shown by the imaginary line in FIG. 4, the carrier 1 automatically stops at the unloading position 10 as described above. In this way, the conveyed object is carried out from the conveyance table 1 that has stopped at the unloading position 10, but while the conveyance table 1 is stopped at the unloading position 10, the following conveyance table 1 moves to this preceding stopped conveyance table. When approaching 1,
As shown by the imaginary line in FIG. 4, the storage cam 24 of the preceding stop conveyance table 1 switches the auxiliary dog 21 of the succeeding conveyance table 1 from the engaged position to the disengaged position, so that the roller 30 is disengaged from the butcher 16 and the rear Vt The conveyance table 1 automatically stops immediately before colliding with the preceding stop conveyance table 1. Similarly, the 71z consecutive conveyance tables 1 are automatically stopped and stored one after another in a daisy chain.

When starting the conveyance platform 1 that is stopped at the unloading position 10, the movable cam 41 may be retreated to the retracted position as described above, and the auxiliary dog 21 of the conveyance platform 1 may be returned to the engaged position. . The conveyance table 1 with the auxiliary dog 21 returned to the engagement position is propelled again as described above by the approaching pufunya 16. 24 is removed from the auxiliary dog 21 of the stop conveyance platform 1, which is located immediately after
Since the auxiliary dog 21 returns to the engaged position, the stop conveyance platform 1 located immediately after is also propelled again by the following pusher dog 16. Each conveyance platform 1 stored in this way starts sequentially from the first one, but if it is to be stopped at the unloading position 10, it can be moved again after the first conveyance platform 1 starts from the unloading position 70. cam 41
All you have to do is make it protrude to the working position.

B1η The conveyance table 1, which is raised from the unloading position 10 by the bunonya-16, is turned upside down via the U-turn section at the upper end of the ascending/descending circulation path, and then descends the conveyance platform descending path 12 in the manner described earlier. Become.

When the conveyance table 1 descending on the conveyance table lowering path 12 is stopped at the load receiving position 11 or the load unloading position 13, the movable cams 43 attached to these positions are projected to the operating position as shown by the imaginary lines in FIG. let As a result, when the conveyance platform 1 descends with the main dog 22 on the pusher 16, the movable cam 43 switches the auxiliary dog 21 to a detached position from the pusher 16, and the roller 30 moves out of the movement path of the pusher 16. In the detached state, it is received by the transport platform receiving portion 45 of the movable cam 43 via the receiving member 40 during descent. Therefore, only the pusher 16 moves downwardly relative to the conveyance table 1. In this conveyance table lowering path 12, the lower load receiving surface 2b of the conveyor table 1 is on the upper side, and the object to be conveyed is mounted on this lower load receiving surface 2b.

When the transport platform 1 that has stopped at the receiving position 11 or the unloading position 13 is started again as described above, the movable cam is moved immediately after the bunyer 16 pushes down and passes the main dog 22 of the stopped transport platform 1. 43 to the retracted position. As a result, the stopped conveyance platform 1 is lowered by gravity and returned to the engaged position by the spring 27. It descends again in a state where it is

Even when a subsequent narrowing table 1 approaches the conveyance table 1 that has been stopped as described above on the conveyance table descending path 12, the storage of the stopped conveyance table 1 is stopped as shown by the imaginary line in FIG. Immediately after the river cam 24 switches the auxiliary dog 21 of the succeeding conveyance table 1 to the detached position with respect to the pusher 16, the succeeding conveyance table 1 is received by the left and right rear end portions 38 of the preceding stop conveyance table 1 via the cushion rubber 39. In this way, the conveyance table 1 can be stored even on the conveyance table lowering path 12. In this way, the transport platform descending path 12
If transport platform 1 is being stored in
As the conveyance table 1 at the lower end (lower end) starts, all the subsequent conveyance tables 1 descend simultaneously. Therefore, when the next conveyance table 1 is stopped again at the stop position (load receiving position 11 or unloading position 13), the movable cam 4
3 should be projected to the operating position again.

In the above embodiment, the carriage ascending route 9 is also used as a transport route, but only the carriage descending route 12 may be used as a transport route according to the present invention.

(Effects of the Invention) As described above, according to the elevating conveyance device of the present invention, the conveyance platform can be stopped at the receiving position and the unloading position on the descending route, and furthermore, the conveyance platform that stops at this stopping position can be The transport platform can be stopped sequentially for storage, so
It is possible to easily carry out cargo delivery work without being subject to time constraints. Moreover, the drive chain only needs to be driven continuously, and there is no need for tact operation, so control can be easily performed. Furthermore, the structure is extremely simple and can be implemented at low cost.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view, Fig. 2 is a partially cutaway front view with the transport platform omitted, Fig. 3 is a cross-sectional plan view of the main part, and Figs. 4 and 5 are transport Fig. 6 is a side view of the main part showing the relationship between the transport platform and the drive chain side in the platform ascending path, and Fig. 7 is an example of the transport platform and drive chain in the platform descending path. FIG. 3 is a vertical cross-sectional side view of main parts showing the relationship with the pusher. 1... Conveyance table, 2a, 2b... Load receiving surface, 3, 14.
...Guide rail, 4...Drive chain, 8.11...
・Consignment receiving position, 9... Conveyance platform ascending route, 10.13...
・Unloading position, 12...Transfer platform lowering route, 16...
Pusher, 18... Fixed locked tool (chain), 21
... Auxiliary dog, 22 ... Retractable main dog, 23.
...Fall prevention equipment, 24...Storage river cam, 27.
32...Spring, 28.33...Stopper,
30.3+...Roller, 36...One-way rotation clutch, 37...1"A elm, 39...Cushion rubber, 40...Member to be received during descent, 41.43...
JJI cam that can be used to stop the conveyor table, 45...Transfer table receiving part. Figure 3? 0,)

Claims (1)

[Claims] A drive chain is stretched along the ascending and descending circulation path of the conveyance table, and a pair of upper and lower dogs are provided on the conveyance table that sandwich the pusher projecting from the drive chain from above and below, and The dog has a retractable shape that allows the pusher to pass only to the lower dog side, and the auxiliary dog on the lower side is configured to be able to engage and detach from the pusher, and is also configured to engage and detach from the spring that biases it to the engaged position. A movable cam for stopping the conveyance platform is installed together with an operating cam driven section, and can move in and out to catch the conveyance platform while the auxiliary dog is removed from the pusher movement path by acting on this cam driven section for engaging/disengaging operation. A storage device is provided at the upper load receiving position and lower load unloading position on the platform lowering path, and each conveyance platform has a storage device that acts on the cam follower for engaging/disengaging operation of the subsequent conveyance platform to detach the auxiliary dog from the pusher movement path. An elevating and lowering conveyance device comprising a cam and configured such that opposing ends of the front and rear conveyance tables abut each other in a state in which the storage cam acts on the conveyance table lowering path.