JP6061797B2 - Vertical conveyor - Google Patents

Description

  The present invention relates to a vertical transporter that transports a load by a plurality of load receivers attached to a plurality of endless strips that circulate, and more particularly to a vertical transporter that uses a belt as a strip.

  As the vertical transfer machine, a load receiving table on which a load is loaded is reciprocated up and down. However, when a large number of loads are continuously transferred in one direction, a plurality of endless strips are provided with a plurality of endless strips. The thing which circulates and is provided with a receiving stand is used. For example, Patent Document 1 describes a vertical transfer machine in which a plurality of load receiving bases attached to four endless strips circulate while maintaining a horizontal state.

  This vertical transfer machine is characterized in that loading is performed on the side where the load receiving table is raised, and unloading is performed on the side where the load receiving table is lowered. Loading and unloading can be performed automatically using a dedicated transfer machine. Patent Document 2 describes a vertical transfer machine in which a plurality of cargo beds attached to three endless strips circulate similarly.

  In Patent Document 3, a plurality of load receiving bases attached to four endless strips travel while maintaining a horizontal state on one side, and circulate while traveling in a vertical state on the other side. A vertical conveyor is described. The installation space can be reduced by placing the load receiving table in a vertical state on the other side. And by changing the traveling direction of the endless strip, it is possible to transport the cargo upward or downward. This vertical transfer machine can relatively easily perform loading and unloading operations by a roller conveyor or the like. In addition, the load receiving platform is structured to be substantially horizontal without being bent by a load in a horizontal state, and to be easily bent with respect to a force in the opposite direction.

  In these vertical transfer machines, one endless strip is held by a plurality of rings arranged in the same plane. In many cases, a chain is used as the endless strip, and a sprocket is used as the ring.

  However, the combination of a chain and a sprocket emits a slight noise and requires lubrication with grease, and is often disliked depending on the application. For example, in a place where food is handled, contamination by grease is regarded as a problem. Also, in places where a quiet environment is required, such as a library, a slight sound is regarded as a problem.

  Patent Document 4 describes an example in which a strip other than a chain is used. A toothed belt 120 as shown in FIG. 12A is used in a conveyor similar to the vertical conveyor described in Patent Document 3. That is, the toothed belt 120 is stretched by meshing with a plurality of toothed pulleys 130. Then, a protruding piece 196 provided on one surface of the toothed belt 120 meshes with the pulley teeth 136.

  The details of the structure of the protruding piece 196 that receives the load by the load receiving platform are not described at all. However, each protruding piece 196 has an opening 191. As shown in FIG. It will be understood that the connecting rod 192 is inserted into the cradle 192, thereby supporting the cradle. Since the connecting rod 192 must be rotatable with respect to the protruding piece 196, it is understood that the tip of the connecting rod 192 is formed as a shaft and the opening 191 of the protruding piece 196 is formed as a bearing. The As such a toothed belt 120, a general commercial product cannot be used, and a specially designed expensive belt needs to be procured.

JP-A-11-208811 JP 2007-217134 A JP 2008-50089 A JP-A-6-100131

  An object of the present invention is a vertical transport machine that transports a load by a plurality of load receiving bases attached to a plurality of endless strips that circulate and can be used even in a place where food is handled without causing dirt due to grease. Is to provide a simple vertical transfer machine. It is another object of the present invention to provide a vertical transfer machine that can be used in a place where a quiet environment is required without generating a slight sound. It is another object of the present invention to provide a vertical transfer machine that uses parts that can be procured easily and inexpensively, such as a toothed belt to be used.

A vertical transfer machine according to claim 1 of the present invention includes a plurality of endless strips that are stretched around a ring body group composed of a plurality of ring bodies, and a plurality of load receiving platforms that are attached to the plurality of endless strips. The endless strip is a toothed belt having belt teeth on one surface, and the ring group includes pulley teeth that mesh with the belt teeth. A plurality of formed toothed pulleys are provided, each of the load cradles is provided with a bearing toward each of the toothed belts, and each of the toothed belts is directed to each of the load cradles at a position where the load cradle is attached. A shaft member formed with a shaft portion , the shaft portion including a screw hole formed as a female screw, and the shaft member, together with the bearing, rotatably supports the load receiving table. Adopted.

  Moreover, the vertical conveying machine according to claim 2 of the present invention is the vertical conveying machine according to claim 1, wherein the toothed belt includes a back plate on a surface opposite to a surface on which the shaft member is located, A means is employed in which the shaft member and the back plate are fixed in a state of sandwiching the toothed belt. Moreover, the vertical conveyance machine which concerns on Claim 3 of this invention is a vertical conveyance machine of Claim 1 or 2, The said toothed belt employ | adopts the means provided with the core wire inside. Moreover, the vertical conveyance machine which concerns on Claim 4 of this invention is a vertical conveyance machine in any one of Claim 1 thru | or 3. WHEREIN: The other surface of the said toothed belt is employ | adopted as a plane. ing.

  The vertical conveyor according to claim 5 of the present invention is the vertical conveyor according to any one of claims 1 to 4, wherein the plurality of load receiving platforms maintain a horizontal state on one side. And means for traveling in a vertical state on the other side. Moreover, the vertical conveyance machine which concerns on Claim 6 of this invention is a vertical conveyance machine of Claim 5, The said load receiving stand employ | adopts the means provided with the sheet-like load receiving surface.

  The vertical conveyance machine of the present invention uses a toothed belt as an endless strip, and uses a toothed pulley for a plurality of rings forming a group of rings. And generally a commercially available toothed belt and toothed pulley can be used. The toothed belt is provided with a shaft member with a simple structure, and a receiving platform can be attached to the shaft member. For this reason, it is possible to apply this toothed belt to various vertical conveyance machines, and it is possible to prevent the baggage from being soiled by grease and to operate in a quiet environment.

An example of a toothed belt in a state where a shaft member is attached is shown, (a) is a schematic plan view, (b) is a schematic front view, (c) is an AA arrow view of (a), ( d) is a BB arrow view of (b). The toothed belt before a shaft member is attached is shown, (a) is a schematic front view, (b) is a CC arrow view of (a), and (c) is a partly cut away view of (a). It is. An example of the toothed pulley used by this invention is shown, (a) is a schematic front view, (b) is a schematic side view. An example of a shaft member is shown, (a) is a schematic plan view, (b) is a schematic front view, (c) is a DD arrow view of (b), (d) is an EE arrow of (b). FIG. An example of a back plate is shown, (a) is a schematic plan view, (b) is a schematic front view, and (c) is a schematic side view. An example of the toothed belt which changed the attachment state of a shaft member is shown, (a) is a schematic plan view, (b) is a schematic front view, (c) is a FF arrow line view of (a), d) is a GG arrow view of (b). An example of the toothed belt which attached another shaft member in another state is shown, (a) is a schematic plan view, (b) is a schematic front view of a shaft member, (c) is a HH arrow of (b). (D) is a view taken in the direction of arrows I-I in (b), (e) is a schematic front view of a toothed belt to which a shaft member is attached, and (f) is a schematic of a toothed belt to which a shaft member is attached. It is a top view. An example of the vertical conveyance machine of the present invention is shown typically, (a) is a side view, (b) is a JJ arrow view of (a), (c) is a KK arrow view of (a). , (D) is a layout diagram of the receiving platform. The other example of the vertical conveying machine of this invention is shown typically, (a) is a side view, (b) is a LL arrow line view of (a), (c) is the MM arrow of (a). FIG. The other example of the vertical conveying machine of this invention is shown typically, (a) is a side view, (b) is a NN arrow line view of (a), (c) is PP of (a). An arrow view, (d) is a QQ arrow view of a receiving stand. It is the schematic which shows an example of the goods receiving stand used with the vertical conveyance machine of this invention, (a) is a schematic plan view, (b) is a schematic front view, (c) is a schematic side view. It is an example of the conventional vertical conveyance machine, (a) is a schematic diagram showing a toothed belt and a toothed pulley, (b) is a schematic diagram showing a toothed belt and a load receiving stand.

  The vertical transfer machine of the present invention uses a toothed belt as an endless strip. The toothed belt includes a shaft member in which a shaft portion that supports the load receiving table is formed at a position where the load receiving table is attached. An example of a toothed belt provided with a shaft member is shown in FIG.

  In FIG. 1, a part of the toothed belt 20 used in an endless state is shown as a partial view, in which (a) is a plan view and (b) is a front view. The toothed belt 20 includes belt teeth 26 having a fixed shape at regular intervals, and a shaft member 50 is provided at a position where the load receiving platform is attached. The shaft member 50 includes an attachment portion 51 for fixing to the toothed belt 20 and a shaft portion 52 for supporting the load receiving platform.

  Moreover, FIG.1 (c) is an AA arrow line view of (a), and has shown the back view with respect to the front view of (b). Moreover, FIG.1 (d) is a BB arrow line view of (b), and has shown the bottom view with respect to the top view of (a). The toothed belt 20 includes a back plate 60 on the surface opposite to the surface on which the shaft member 50 is located, and the mounting portion 51 and the back plate 60 of the shaft member 50 are disposed so as to sandwich the toothed belt 20. It is fixed by a fixing screw 40.

  Next, the state before the shaft member 50 is attached to the toothed belt 20 used in the present invention will be described with reference to FIG. As the toothed belt 20, a general commercial product can be used and can be engaged with a commercially available toothed pulley 30 described later.

  FIG. 2 shows a partial view of the toothed belt 20, where (a) is a partially sectional front view, and (b) is a CC arrow view of (a) and also shows a cut section. . The toothed belt 20 is provided with belt teeth 26 having a fixed shape on one surface 21 of the belt body 25 at regular intervals. Here, the case where the other surface 22 is a flat surface is shown. In the vertical transfer machine of the present invention, the other surface 22 may have a free shape and may not be used at all. Further, the other surface 22 may be formed as a flat surface and used as a flat belt stretched around a flat pulley. Furthermore, belt teeth can also be formed on the other surface 22 and can be stretched around a toothed pulley in the same manner as the one surface 21.

  The toothed belt 20 preferably includes a core wire 27 inside the belt body 25. By providing the core wire 27, a heavy load can be transported. That is, sufficient strength can be imparted also to the attachment portion of the shaft member 50 where particularly large stress is generated.

  As shown in FIG. 2 (c), the toothed belt 20 is used by partially cutting away the portion to which the shaft member 50 is attached. That is, on one surface 21, the belt teeth 26 are cut to form a flat surface 23, and on the other surface 22, a recessed surface 24 is formed. As shown in FIG. 1, the mounting portion 51 of the shaft member 50 is positioned on the flat surface 23 formed on the one surface 21. Further, the back plate 60 is positioned on the recessed surface 24 formed on the other surface 22, and is attached so that the surface of the back plate 60 is flush with the other surface 22 as necessary.

  Next, the toothed pulley 30 used in the present invention will be described with reference to FIG. FIG. 3A is a schematic front view, and FIG. 3B is a schematic side view. As the toothed pulley 30, a commercially available product can be used, and the toothed belt 20 can be engaged and stretched. That is, the pulley teeth 36 of the toothed pulley 30 mesh with the belt teeth 26 of the toothed belt 20. Here, the case where the toothed pulley 30 is provided with the flange 37 on one side is shown, but the flange 37 can also be provided on both sides as long as the traveling of the toothed belt 20 including the shaft member 50 is not hindered.

  Next, an example of the shaft member 50 attached to the toothed belt 20 will be described with reference to FIG. (A) is a schematic plan view, (b) is a schematic front view, (c) is a DD arrow view of (b), and (d) is an EE arrow view of (b). The shaft member 50 includes an attachment portion 51 for fixing to the toothed belt 20 and a shaft portion 52 for supporting the load receiving platform.

  The toothed belt 20 circulates while being stretched around a vertical surface as an endless strip, whereas the load receiving base attached thereto travels while maintaining a predetermined posture. For this reason, it is necessary for the toothed belt 20 and the load receiving platform to be able to rotate with respect to each other. That is, in this specification, the shaft member 50 is fixed to the toothed belt 20 and includes a shaft portion 52 that is a center of rotation with respect to the load receiving table, and the load receiving table together with a bearing provided on the load receiving side. It can be defined as a member that is rotatably supported.

  The attachment portion 51 has a flat surface 55 formed by cutting a part of a cylinder, and the toothed belt 20 can be positioned and fixed therein. That is, as shown in FIG. 2C, the flat surface 55 is positioned on the flat surface 23 formed by cutting the belt teeth 26. The mounting portion 51 is provided with a screw hole 56 formed as a female screw, and the fixing screw 40 can be screwed together.

  The shaft portion 52 is formed in a columnar shape, and supports the load receiving table in a rotatable manner together with a bearing provided on the load receiving table side. A commercially available ball bearing or roller bearing can be used as the bearing, but a sealed structure filled with grease is preferable. In order to mount the bearing, a screw hole 57 formed as a female screw is provided in the shaft core.

  Next, an example of the back plate 60 used for fixing the shaft member 50 to the toothed belt 20 is shown in FIG. (A) is a schematic plan view, (b) is a schematic front view, and (c) is a schematic side view. As shown in (c) of FIG. 2, the back plate 60 is positioned on the recessed surface 24 formed on the other surface 22 of the toothed belt 20. As shown in FIGS. 1C and 1D, since the fixing screw 40 is used for fixing, an opening 65 through which the fixing screw 40 is inserted is provided.

  When the other surface 22 of the toothed belt 20 is used as a flat belt stretched around a flat pulley, the surface of the back plate 60 is taken into consideration in consideration of the thickness of the back plate 60 and the depth of the recessed surface 24. 61 is set to be flush with the other surface 22. In addition, a countersunk screw is used as the fixing screw 40 so that the head of the fixing screw 40 does not protrude from the other surface 22. The opening 65 of the back plate 60 is formed so that the diameter gradually decreases from the front surface 61 to the back surface 62 of the back plate 60 in accordance with the shape of the countersunk screw.

  The vertical conveyor of the present invention uses a toothed belt 20 having a shaft member 50 as shown in FIG. As shown in FIG. 2, the toothed belt 20 is partially cut off and used, and meshed with the toothed pulley 30 shown in FIG. The shaft member 50 has the structure shown in FIG. 4 and is fixed by the fixing screw 40 in a state where the toothed belt 20 is sandwiched together with the back plate 60 shown in FIG. However, the above-described toothed belt 20 can be modified in various ways, which will be described below.

  FIG. 6 shows an example in which the mounting position with respect to the toothed belt 20 is reversed using the same shaft member 50 as in FIG. That is, the back plate 60 is disposed on one surface 21 including the belt teeth 26, and the shaft member 50 is disposed on the other surface 22. (A) is a top view, (b) is a front view, (c) is a FF arrow view of (a), (d) is a GG arrow view of (b). The toothed belt 20 shown in FIG. 2, the shaft member 50 shown in FIG. 4, and the back plate 60 shown in FIG. 5 are used, and the shaft member 50 and the back plate 60 attach the toothed belt 20. The same is true for the pinching.

  In the form shown in FIG. 6, the toothed belt 20 including the shaft member 50 has the attachment portion 51 located on the other surface 22, so that the other surface 22 is a surface having irregularities. Therefore, this toothed belt 20 can be used similarly to the toothed belt 20 shown in FIG. 1 when the other surface is not used. As for the attachment of the shaft member 50, in any case, other fixing means such as a rivet may be employed instead of the fixing screw 40.

  In order to attach the shaft member 50, the belt teeth 26 are not necessarily cut off. An example of the toothed belt 20 in which the belt teeth 26 are not excised is shown in FIG. 7A to 7D show the shaft member 50x, where FIG. 7A is a schematic plan view, FIG. 7B is a schematic front view, FIG. 7C is a view taken along the line H-H in FIG. Fig. 2 is a view taken in the direction of arrows II in (b).

  The shaft member 50x includes a mounting portion 51x and a shaft portion 52. The shaft portion 52 is formed in the same manner as the shaft member 50, but is different from the shaft member 50 in that the mounting portion 51x is formed in a cylindrical shape. FIG.7 (e) is a schematic front view of the toothed belt 20, (f) is a schematic plan view which shows the state which attached the shaft member 50x to this. That is, an opening 28 is provided in the belt tooth 26 at a position where the load receiving base is attached, and an attachment portion 51 x is inserted and fixed by the fixing screw 41.

  The shaft member 50x can be used in a vertical conveyance machine that conveys a light load, and can be attached to the toothed belt 20 more easily. Even in this case, the strength can be increased by using an appropriate back plate 60x and fixing screw 40x (both not shown). That is, the shaft member 50x and the back plate 60x can be formed so as to be fixed in a state where the toothed belt 20 is sandwiched.

  Next, the vertical transfer machine of the present invention will be described with specific examples. FIG. 8 schematically shows an example in which the toothed belt 20 is used as an endless strip of a vertical transfer machine described in Patent Document 2. (A) is a side view, (b) is a JJ arrow view of (a), (c) is a KK arrow view of (a), and (d) is an arrangement view of a receiving platform.

  The vertical transfer machine uses a large number of rings, and is described using the following method. In the side view of (a), the position of the ring body is specified by A, B... And described as a toothed pulley 30A. Moreover, in arrow views, such as a JJ arrow view, while showing a planar position, the endless strip to stretch is specified by a, b ..., and described like toothed pulley 30Aa.

  For example, in FIG. 8A, the toothed pulley 30A is not specified, but in FIG. 8B, this represents two toothed pulleys 30Aa and 30Ab provided opposite to each other, and a toothed pulley. 30Aa stretches the toothed belt 20a, and the toothed pulley 30Ab stretches the toothed belt 20b.

  In FIG. 8, the vertical conveyor 10 uses three toothed belts 20a, 20b, and 20c. The toothed belt 20a is stretched in order by four toothed pulleys 30Aa, 30Ba, 30Ca, 30Da. The toothed belt 20b is stretched by four toothed pulleys 30Ab, 30Bb, 30Cb, and 30Db in order, and is provided to face the toothed belt 20a. The toothed belt 20c is stretched by four toothed pulleys 30Bc, 30Ec, 30Fc, and 30Cc in this order, and is disposed outside the toothed belt 20b.

The load receiving base 80x is arranged as shown in FIG. 8D with respect to the respective toothed belts 20a, 20b, 20c, and a plurality of load receiving bases 80x are attached at predetermined intervals with the load receiving surface being horizontal. For example, a drive shaft is provided at the position of the toothed pulley 30B, and each toothed belt 20a, 20b, 20c can be circulated at a constant speed. As a result, the load receiving platform 80x circulates while maintaining a horizontal state.

  In the vertical transfer machine 10, loading is performed on the side where the load receiving table 80x is raised, and unloading is performed on the side where the load receiving table 80x is lowered. Loading and unloading can be performed automatically using a dedicated transfer machine. That is, when the load receiving table 80x is formed in a concave shape as shown in the figure, the load receiving table of the transfer machine is formed in a convex shape that meshes with the load receiving table 80x.

  As a result, on the side where the load receiving table 80x is raised, the load placed on the convex load receiving table can be received (loaded) by the load receiving table 80x. In addition, on the side where the load receiving table 80x is lowered, it is possible to deliver (unload) the load placed on the load receiving table 80x to the convex load receiving table. As shown in FIG. 8D, the doorway for the luggage is in the same direction (front side in the figure).

  Next, an example in which the toothed belt 20 is used as an endless strip, which is a vertical transfer machine described in Patent Documents 3 and 4, will be described. In this vertical conveyance machine, a plurality of load receiving bases attached to four endless strips travel while maintaining a horizontal state on one side, and circulate while traveling in a vertical state on the other side. Is.

  Since there are two types of this vertical transfer machine depending on the difference in loading and unloading directions, it will be described with reference to FIG. 9 and FIG. 10, but before that, the load receiving platform used in these will be described with reference to FIG.

  11A is a plan view of the load receiving stand 80, FIG. 11B is a front view, and FIG. 11C is a side view. The entire load receiving surface on which the load is placed is composed of a sheet-like flexible load receiving belt 81. And the upper surface side of a figure is a load receiving surface which mounts a load. In (a), the right and left direction in the figure is the traveling direction, and the plate members 82 having rigidity are provided at both front and rear ends.

  Ribs 85a, 85b, 85c, and 85d are provided at both ends of each plate member 82, and bearings 86a, 86b, 86c, and 86d are attached thereto. The bearing 86a is attached to the toothed belt 20a, the bearing 86b is attached to the toothed belt 20b, the bearing 86c is attached to the toothed belt 20c, and the bearing 86d is attached to the toothed belt 20d.

  A large number of block members 83 are attached to the upper and lower sides of the load receiving table 80 on the left and right sides to limit the bending of the load receiving belt 81. Although not shown, each block member 83 is attached one by one with bolts and nuts, and arranged so that adjacent block members 83 are in close contact with each other. A reinforcing belt 84 is provided on the lower surface of the load receiving belt 81, and the block member 83 and the reinforcing belt 84 are fixed in a state where the load receiving belt 81 is sandwiched.

  For this reason, even if a load is placed on the load receiving belt 81, it is possible to prevent the center of the load receiving base 80 from being deformed by the action of the block material 83. Further, when the posture is changed by the pulley, the structure can be bent so as to wind around the pulley with the cargo receiving surface (upper surface side) outside.

  Returning to the vertical transfer machine of the present invention. FIG. 9 schematically shows the vertical transfer machine 11 on the upper floor and the lower floor where the doorway for luggage is opposite. (A) is a side view, (b) is an LL arrow view of (a), and (c) is an MM arrow view of (a). Loading and unloading can be automatically performed by conveyors 91 and 92 such as roller conveyors.

  The vertical conveyor 11 uses four toothed belts 20a, 20b, 20c, and 20d. The toothed belt 20c and the toothed belt 20d are arranged to face each other so as to sandwich the plurality of load receiving tables 80, and the toothed belt 20a and the toothed belt 20b are arranged to face each other outside these. Has been. These four toothed belts 20a, 20b, 20c, and 20d are stretched around the plurality of toothed pulleys 30 and also stretched around the flat pulleys 70E and 70F by the other surface 22 formed in a plane. ing.

  The toothed belt 20a is stretched in the order of 30Aa, 30Ba, 70Fa, 30Ca, and 30Da by four toothed pulleys 30 and one flat pulley 70. Similarly, the toothed belt 20b is stretched in the order of 30Ab, 30Bb, 70Fb, 30Cb, and 30Db by four toothed pulleys 30 and one flat pulley 70. These two belts are called outer belts.

  The toothed belt 20c is stretched in the order of 30Ac, 70Ec, 30Cc, and 30Dc by three toothed pulleys 30 and one flat pulley 70. Similarly, the toothed belt 20d is stretched in the order of 30Ad, 70Ed, 30Cd, and 30Dd by three toothed pulleys 30 and one flat pulley 70. These two belts are called inner belts.

  In order to simplify the drawing, only one cargo receiving platform 80 is shown on the transfer line and one on the return line. As described above, the bearings 86a, 86b, 86c, and 86d formed on each load receiving base 80 are rotatably attached to the shaft member 50 provided on the toothed belts 20a, 20b, 20c, and 20d, respectively.

  The load receiving stand 80 can be changed in posture while being stretched by the three load receiving pulleys 75A, 75C, and 75D. In order to simplify the drawing, each of the load receiving pulleys 75A, 75C, and 75D is shown as one drum-type pulley, but may be formed using a plurality of flat pulleys.

  For example, a drive shaft is provided at the position of the toothed pulley 30A, and each toothed belt 20a, 20b, 20c, 20d can be circulated at a constant speed. As a result, the load receiving platform 80 travels while maintaining a horizontal state on one side (conveyance line) and circulates while maintaining a vertical state on the other side (return line).

  The transport line can be raised or lowered depending on the direction of the circulating belt. For example, the cargo can be conveyed from the conveyor 91 to the conveyor 92 by raising the conveyance line. Further, the cargo can be conveyed from the conveyor 92 to the conveyor 91 by lowering the conveyance line.

  Next, FIG. 10 schematically shows the vertical transfer machine 12 in which the doorway for the luggage is on the same side on the upper floor and the lower floor. (A) is a side view, (b) is an NN arrow view of (a), (c) is a PP arrow view of (a), (d) is QQ of (a). It is an arrow view. Loading and unloading are automatically performed by conveyors 91 and 92 such as roller conveyors.

  The vertical conveyor 12 uses four toothed belts 20a, 20b, 20c, and 20d. The toothed belt 20c and the toothed belt 20d are arranged to face each other so as to sandwich the plurality of load receiving tables 80, and the toothed belt 20a and the toothed belt 20b are arranged to face each other outside these. Has been. These four toothed belts 20a, 20b, 20c, and 20d are stretched around a plurality of toothed pulleys 30 and flat pulleys 70G, 70H, 70I, and 70J are formed by the other surface 22 formed in a plane. Is also stretched.

  The toothed belt 20a is stretched in the order of 30Aa, 30Ba, 30Da, 70Ha, 70Ia, 30Ea, and 30Fa by five toothed pulleys 30 and two flat pulleys 70. Similarly, the toothed belt 20b is stretched in the order of 30Ab, 30Bb, 30Db, 70Hb, 70Ib, 30Eb, and 30Fb by five toothed pulleys 30 and two flat pulleys 70. These two belts are called outer belts.

  The toothed belt 20c is stretched in the order of 30Ac, 30Bc, 30Cc, 70Gc, 70Jc, 30Ec, 30Fc by five toothed pulleys 30 and two flat pulleys 70. Similarly, the toothed belt 20d is stretched in the order of 30Ad, 30Bd, 30Cd, 70Gd, 70Jd, 30Ed, and 30Fd by five toothed pulleys 30 and two flat pulleys 70. These two belts are called inner belts.

  In order to simplify the drawing, only one cargo receiving platform 80 is shown on the transfer line and one on the return line. As described above, the bearings 86a, 86b, 86c, and 86d formed on each load receiving base 80 are rotatably attached to the shaft member 50 provided on the toothed belts 20a, 20b, 20c, and 20d, respectively.

  For example, a drive shaft is provided at the position of the toothed pulley 30A, and each toothed belt 20a, 20b, 20c, 20d can be circulated at a constant speed. As a result, the load receiving platform 80 travels while maintaining a horizontal state on one side (conveyance line) and circulates while maintaining a vertical state on the other side (return line). .

  The transport line can be raised or lowered depending on the direction of the circulating belt. For example, the cargo can be conveyed from the conveyor 91 to the conveyor 92 by raising the conveyance line. Further, the cargo can be conveyed from the conveyor 92 to the conveyor 91 by lowering the conveyance line.

  The vertical transfer machine of the present invention uses a toothed belt as an endless strip, thereby preventing the baggage from being soiled by grease and realizing operation in a quiet environment. Therefore, materials etc. are selected with the same idea for parts other than the toothed belt. For example, stainless steel is appropriately used to prevent the luggage from being soiled due to the occurrence of rust. In order to prevent the generation of sound, a resin material is used for the block material and the like.

10, 11, 12: Vertical conveyor 20: Toothed belt 21: One side 22: The other side 26: Belt tooth 27: Core wire 30: Toothed pulley 36: Pulley tooth 50: Shaft member 51: Mounting portion 52: Shaft 60: Back plate 80: Receiving platform

Claims (6)

A vertical transfer machine that includes a plurality of endless strips that are stretched around a ring group consisting of a plurality of ring bodies, and that includes a plurality of load receptacles attached to the plurality of endless strips,
Each of the endless strips is a toothed belt having belt teeth on one surface,
The ring group includes a plurality of toothed pulleys each having pulley teeth that mesh with the belt teeth,
Each of the cargo cradles includes a bearing toward each of the toothed belts,
Each of the toothed belts includes a shaft member in which a shaft portion is formed toward each load receiving table at a position where the load receiving table is attached, and the shaft portion includes a screw hole formed as an internal thread,
The vertical conveying machine characterized by the said shaft member supporting the said load receiving stand with the said bearing so that rotation is possible.   The toothed belt includes a back plate on a surface opposite to a surface on which the shaft member is located, and the shaft member and the back plate are fixed in a state of sandwiching the toothed belt. The vertical transfer machine according to claim 1.   The vertical conveyor according to claim 1, wherein the toothed belt includes a core wire therein.   The vertical conveyor according to any one of claims 1 to 3, wherein the other surface of the toothed belt is a flat surface.   5. The vehicle according to claim 1, wherein the plurality of cargo cradles travel while maintaining a horizontal state on one side and travel in a vertical state on the other side. The vertical conveyor described.   The vertical conveyor according to claim 5, wherein the load receiving platform includes a sheet-shaped load receiving surface.