JP6202273B2 - Self-weight lifting conveyor - Google Patents

Description

  The present invention relates to a self-weight lifting / lowering conveying device for transporting a transported object by moving it up and down using its own weight in a factory or the like.

Hereinafter, with reference to FIG. 4, an example of a conventional lifting and lowering conveying apparatus that uses the weight of the conveyed product will be described.
FIG. 4 is a schematic view showing a conventional self-weight lifting / lowering conveyance device 10. As shown in this figure, the self-weight lifting / lowering conveyance device 10 carries in the actual box 2 containing the contents 2A such as automobile parts, the worker 1 takes out the contents 2A from the actual box 2, and the empty box 3 is assumed to be carried out. The self-weight lifting and lowering conveying device 10 is configured by connecting two tables 4a and 4b that move up and down in conjunction with both ends of a rope body 6 such as a rope suspended from two pulleys 5a and 5b. Then, the actual box 2 is loaded onto the one table 4a from the transport path 7a at the ascending position indicated by the solid line in FIG. 4, and is lowered to the descending position indicated by the imaginary line in FIG. At this time, the other table 4b on which the empty boxes 3 are loaded is raised from the lowered position indicated by the solid line to the raised position indicated by the phantom line in FIG.
In this way, the actual box 2 can be lowered from the conveyance path 7a by its own weight, and the empty box 3 can be raised to the conveyance path 7b.

JP 2004-352430 A

Here, when the empty box 3 is transported by its own weight along the transport path 7b, it is desired that the raised position of the table 4b be as high as possible. However, in the conventional self-weight lifting / lowering conveying apparatus 10, since the lowering stroke of one table 4a and the rising stroke of the other table 4b are the same, when the rising position of the other table 4b is increased, the lowering position is also increased. Therefore, the burden on the operator who loads the empty box 3 on the other table 4b increases.
Patent Document 1 discloses an elevating apparatus in which an elevator base is connected to both ends of a cable body suspended from a pulley, and the elevator is moved up and down by driving the pulley with a motor. In the case of this lifting device, the lifting stroke of the lifting platform connected to both ends of the cable body is the same.

  The present invention has been made in view of the circumstances as described above, and by using the weight of a transported object, another transported object is lifted by a lower stroke than the descending stroke by the lowering of one transported object. It is an object of the present invention to provide a self-weight lifting and lowering conveying device that can perform the above-mentioned.

In order to solve the above-described problems, the present invention provides a pulley, a cable body suspended from the pulley, and a carry-in for lowering an actual box connected to the cable body and containing contents. and side tables are linked to the rope body and a carry-out side table for raising the empty box contents were taken out, by the weight of the carry-the actual box placed on the tables, the A self-weight lifting / lowering conveying device that lowers the carry-in table and raises the carry-out table in conjunction with the lowering of the carry-in table, wherein the lift of the carry-out table with respect to the lowering stroke of the carry-in table A stroke amplifying means for increasing the stroke is provided.

According to the self-weight lifting and lowering conveying device according to the present invention, the lifting stroke of the unloading table can be increased with respect to the descending stroke of the loading table, so that the empty box loaded on the unloading table at a lower position is more It becomes possible to carry out at a high position.

It is a schematic diagram which shows the own weight raising / lowering conveying apparatus which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the carrying-in and carrying-out process of the conveyed product of the dead weight raising / lowering conveying apparatus which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows the self-weight raising / lowering conveying apparatus which concerns on 2nd Embodiment of this invention. It is a schematic diagram which shows the conventional self-weight raising / lowering conveying apparatus.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to the invention will be described with reference to the accompanying drawings. The apparatus described below and its constituent elements, parts, parts, and materials are examples of embodiments of the present invention, and the present invention is not limited thereto. In the drawings, the same reference numerals indicate the same items, the same members, or similar or corresponding items, and the dimensions and ratios of the devices and members do not reflect actual values. Are exaggerated as appropriate.

With reference to FIGS. 1 and 2, the configuration of the self-weight lifting and lowering conveying apparatus 10 ′ according to the first embodiment of the present invention will be described.
As shown in FIG. 1 (a), a self-weight lifting / lowering conveying apparatus 10 ′ according to the present embodiment is suspended by two pulleys 5a and 5b arranged at intervals in the horizontal direction, and these pulleys 5a and 5b. A strip 6 such as a wire rope, a two-stage upper and lower carry-in table 4a1 and an upper carry-out table 4a2 connected to one end of the rope 6, and a lower row connected to the other end of the rope 6 And a carry-out table 4b.
In addition, a chain, a wire rope, etc. can be used for the rope body 6. FIG. Naturally, when using a chain, a sprocket wheel is used as a pulley.

  An actual box conveyance path 7a and an empty box conveyance path 7b are installed adjacent to the self-weight lifting / lowering conveyance apparatus 10 '. The actual box transport path 7a is a box containing the contents 2A such as automobile parts (hereinafter, the box containing the contents 2A is called the actual box 2, and the box after taking the contents 2A out of the actual box 2 is empty. Box 3). The actual box conveyance path 7a conveys the actual box 2 from the upstream side and loads it into the own weight lifting / lowering conveyance apparatus 10 ', and has a loading position of a predetermined height. The actual box conveyance path 7a can be a known conveyance device such as a roller conveyor, a belt conveyor, or a slat conveyor, and includes those having and not having a drive source. The empty box conveyance path 7b is a known free conveyor that carries the empty box 3 out of its own weight lifting / lowering conveyance device 10 'and does not have a drive source for conveying the empty box 3 by its own weight. Moreover, the empty box conveyance path 7b has a carry-out position higher than the carry-in position of the actual box conveyance path 7a.

  The carry-in table 4a1 of the self-weight lifting / lowering conveying apparatus 10 ′ is connected to the upper carry-out table 4a2 suspended from the cable body 6, and is raised to the carry-in position of the actual box carrying path 7a (see FIG. 1 (a)). ) And a lowered position (see FIG. 1 (b)) facing the actual box shooter 7c for receiving the actual box 2 by the worker 1 disposed below the carrying-in position of the actual box transport path 7a. It is supported so that it can be raised and lowered. The upper carry-out table 4a2 is suspended from the cable body 6 and faces a lift position (see FIG. 1 (a)) opposite to the carry-out position of the empty box conveyance path 7b, and a lowered position (see FIG. 1) below it. (See (b)).

  The upper carry-out table 4a2 and the carry-in table 4a1 are connected to each other and move up and down integrally. As shown in FIG. 1 (a), when the carry-in table 4a1 is in the raised position facing the carry-in position of the actual box conveyance path 7a, the upper carry-out table 4a2 faces the carry-out position of the empty box conveyance path 7b. When the carry-in table 4a1 is in the lowered position facing the actual box shooter 7c as shown in FIG. 1B, the upper carry-out table 4a2 is in the lowered position at a predetermined height. Yes.

  Further, the lower carry-out table 4b connected to the other end side of the rope body 6 is disposed adjacent to the upper carry-out table 4a2 and the carry-in table 4a1, and is supported by the rope body 6 so as to be movable up and down. ing. As shown in FIG. 1A, when the upper carry-out table 4a2 and the carry-in table 4a1 are in the raised position, the lower carry-out table 4b is lowered sufficiently low so that the worker 1 can easily load the empty box 3. 1b, when the upper carry-out table 4a2 and the carry-in table 4a1 are in the lowered position, the upper carry-out table 4a1 seems to be in the raised position facing the upper carry-out table 4a2 in the lowered position. Further, the length of the striated body 6 is adjusted.

The own-weight lifting / lowering conveying device 10 ′ is configured so that the upper carry-out table 4a2, the carry-in table 4a1 and the lower-stage carry-out table 4b move up and down as follows by the dead weight of the actual box 2 and the empty box 3 loaded thereon. Specifications such as weight and dimensions are set.
(1) When the upper carry-out table 4a2 and the carry-in table 4a1 are empty and the lower carry-out table 4b is empty or the empty box 3 is placed, the upper carry-out table 4a2 and the carry-in table 4a1 are in the raised position, and the lower carry-out table 4b The position is lowered (see FIG. 1A).

(2) When the upper carry-out table 4a2 is empty and the actual box 2 is placed on the carry-in table 4a1, and the empty box 3 is placed on the lower carry-out table 4b, the carry-in table 4a1 and the upper carry-out table 4a2 are lowered. The lower carry-out table 4b is in the raised position (see FIG. 2 (b)).
(3) When the empty box 3 is placed on the upper carry-out table 4a2 and the carry-in table 4a1 and the lower carry-out table 4b are empty, the upper carry-out table 4a2 and the carry-in table 4a1 are in the raised position, and the lower carry-out table 4b is in the lowered position. (See FIG. 2C).

The own weight lifting / lowering transfer device 10 ′ moves the actual box 2 from the actual box transfer path 7a to the carry-in table 4a1 at the raised position, and moves and lifts the actual box 2 from the carry-in table 4a1 at the lowered position to the real box shooter 7c. The empty box 3 is moved from the lower carry-out table 4b at the position to the upper carry-out table 4a2 at the lowered position, and the empty box 3 is moved from the upper carry-out table 4a2 at the raised position to the empty box conveyance path 7b as appropriate. Moving means (only the stopper 8 is shown).
As the moving means, according to the position of the actual box 2 or the empty box 3, a mechanism such as an inclination for holding and moving these, a stopper 8, a pusher, etc. can be used. These can be mechanically, electrically or manually. It can be driven.

The operation of the self-weight lifting / lowering conveying apparatus 10 ′ configured as described above will be described with reference to FIGS. 1 and 2.
As shown in FIG. 1A, the worker 1 loads the empty box 3 on the lower carry-out table 4b in the lowered position while the upper carry-out table 4a2, the carry-in table 4a1, and the lower carry-out table 4b are empty. At this time, since the lower carry-out table 4b is at a sufficiently low position, the work 1 can easily load the empty box 3 into the lower carry-out table 4b. In this state, the upper carry-out table 4a2 and the carry-in table 4a1 are in the raised position, and the lower carry-out table 4b is in the lowered position.

  As shown in FIG. 2 (a), when the actual box 2 is carried into the carry-in table 4a1 located at the ascending position from the actual box transport path 7a, The carry-in table 4a1 and the upper carry-out table 4a2 are lowered to the lowered position, and the lower carry-out table 4b on which the empty box 3 is placed is raised to the raised position. Then, the empty box 3 on the lower carry-out table 4b at the raised position is moved to the upper carry-out table 4a2 at the lowered position.

  Thereafter, when the real box 2 on the carry-in table 4a1 in the lowered position is moved to the real box shooter 7c, as shown in FIG. 2C, the carry-in table 4a1 and the upper carry-out table 4a2 on which the empty box 3 is placed. Rises to the raised position, and the lower carry-out table 4b falls to the lowered position. And the empty box 3 on the upper stage carrying-out table 4a2 in a raise position is moved to the empty box conveyance path 7b. The empty box 3 moved to the empty box transfer path 7b is transferred downstream along the empty box transfer path 7b.

  In this way, after the actual box 2 carried into the carry-in table 4a1 from the actual box transport path 7a is lowered to the actual box shooter 7c and the worker 1 takes out the contents 2A from the actual box 2, the empty box 3 is removed. It can be carried out to the empty box carrying path 7b via the lower carry-out table 4b and the upper carry-out table 4a2. At this time, the carry-in table 4a1 functions as a carry-in side table for the actual box 2 (conveyed object), the lower-stage carry-out table 4b and the upper-stage carry-out table 4a2 function as a carry-out side table for the empty box 3 (conveyed object). It functions as a stroke amplifying means for increasing the rising stroke of the carry-out table with respect to the lowering stroke. As a result, the empty box 3 can be raised from the lower carry-out table 4b at a sufficiently low lowered position to the carry-out position of the empty box transfer path 7b higher than the transfer position of the actual box transfer path 7a. Thus, it can be efficiently transported along the empty box transport path 7b.

Next, the configuration of the self-weight lifting / lowering conveying apparatus 10 '' according to the second embodiment of the present invention will be described with reference to FIG. FIG. 3A is a schematic view showing the own weight lifting and conveying apparatus 10 ″, and FIG. 3B is an enlarged view of the pulley portion of the own weight raising and lowering conveying apparatus 10 ″ in FIG. 3A. .
As shown in FIGS. 3 (a) and 3 (b), a self-weight lifting / lowering conveying apparatus 10 '' according to the present embodiment includes a pulley 5a and a small-diameter shaft portion arranged with a space in the horizontal direction with respect to the pulley 5a. 12a and a wheel shaft 12 (stroke amplifying means) having a large-diameter shaft portion 12b, a rope body 6a such as a wire rope having one end connected to the small-diameter shaft portion 12a of the wheel shaft 12 via a pulley 5a, and the rope body A carry-in table 4a connected to the other end of 6a, a wire rope 6b such as a wire rope having one end connected to the large-diameter shaft portion 12b of the wheel shaft 12, and the other end of the cable 6b. And an unloading table 4b.

  As shown in FIG. 3 (a), the carry-in table 4a is disposed below the raised position (solid line in the figure) opposite the carry-in position of the actual box transport path 7a and below the carry-in position of the real box transport path 7a. The worker 1 is supported so as to be able to move up and down between a lowered position (imaginary line in the figure) facing the actual box shooter 7c for receiving the actual box 2. The unloading table 4b has a rising position (imaginary line in the figure) opposite to the unloading position of the empty box conveyance path 7b, and a lowered position (in the figure, sufficiently low so that the worker 1 can easily load the empty box 3). It is supported so that it can move up and down.

The operation of the self-weight lifting / lowering conveying apparatus 10 '' configured as described above will be described with reference to FIG.
As shown in FIG. 3A, when the actual box 2 is loaded from the actual box conveyance path 7a to the loading table 4a located at the ascending position indicated by the solid line in the drawing, the loading table 4a is moved by the dead weight of the actual box 2. While descending to the lowered position shown by the phantom line in the figure, the carry-out table 4b on which the empty box 3 is placed rises to the raised position. Then, the empty box 3 on the carry-out table 4b at the raised position indicated by the phantom line in the drawing is moved to the conveyance path 7b.

At this time, the ratio A: B between the descending stroke A of the carry-in table 4a and the lift stroke B of the carry-out table 4b is determined according to the diameter D of the large-diameter shaft portion 12b and the diameter d of the small-diameter shaft portion 12a. It is determined as shown in the equation.
d: D = A: B
Thereby, the raising stroke B of the carry-out table 4b can be made larger than the lowering stroke A of the carry-in table 4a.

  In this way, by using the own weight lifting and lowering conveying device 10 ″, the actual box 2 carried into the carry-in table 4a from the actual box conveying path 7a is lowered to the actual box shooter 7c, and the contents 2A are taken out. The empty box 3 can be carried out to the empty box conveyance path 7b via the carry-out table 4b. At this time, the empty box 3 can be raised from the unloading table 4b at a sufficiently low lowered position to the unloading position of the empty box conveying path 7b higher than the conveying position of the actual box conveying path 7a. It can be efficiently transported along the empty box transport path 7b. And the raising / lowering stroke ratio between the carrying-in table 4a and the carrying-out table 4b can be set to a desired magnification by the ratio of the diameters of the large-diameter shaft portion 12b and the small-diameter shaft portion 12a.

  Here, the wheel shaft 12 is used as the stroke amplifying means. However, instead of using a speed reduction mechanism (for example, a gear box or a moving pulley) capable of realizing the same function as this, a carry-in table is used according to the speed reduction ratio. The lift stroke ratio between 4a and the carry-out table 4b can be set to a desired boost.

2 ... Actual box, 3 ... Empty box, 4a ... Carry-in table, 4a1 ... Carry-in table,
4a2 ... upper carry-out table, 4b ... carry-out table, 5a, 5b ... pulley
6 ... Rope body, 10 '... Self-weight lifting and lowering conveying device

Claims (2)

A pulley, a rope suspended from the pulley, a carry-in table for lowering an actual box connected to the rope and containing contents, and a content connected to the rope and a carry-out side table for raising the object is empty box taken out, by the weight of the carry-te the actual box placed on Buru lowers the carry-table, the said carry-table A self-weight lifting and lowering conveying device that raises the carry-out side table in conjunction with lowering,
A self-weight lifting / lowering conveying apparatus comprising stroke amplifying means for increasing a rising stroke of the unloading side table with respect to a descending stroke of the loading-side table. The stroke amplifying means has a carry-in table connected to one end side of the rope body as the carry-in side table, and a lower-stage carry-out table connected to the other end side of the rope body as the carry-out table; An upper carry-out table connected above the carry-in table on one end side of the cable body,
When the carry-in table and the upper carry-out table are lowered by the dead weight of the actual box placed on the carry-in table, the lower carry-out table on which the empty box is placed rises to a position facing the upper carry-out table. The empty box on the lower carry-out table can be moved to the upper carry-out table, and when the actual box on the lowered carry-in table is loaded and unloaded, the empty box moved from the lower carry-out table is The upper carry-out table placed and the carry-in table loaded with the actual box are raised, and the lower carry-out table on which the empty box is not placed is lowered. The self-weight lifting and lowering conveying device according to claim 1.

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