JPH05162989A - Elevation transporting device - Google Patents

Abstract

PURPOSE:To reduce the cost of the whole device and put the elevator carriages of both elevation driving units perfectly into synchronous drive even if no electrical synchronous control means is used. CONSTITUTION:An elevation transporting device is equipped with an elevator carriage 6 which can rise and lower along supporting pillars 4 and 5, elevation driving cable 8 for the elevator carriage 6, and a motor 10 interlocking- connected with the driving wheel for the elevation driving cable 8. Two elevation driving units 1A and 1B are installed in parallel, and the driving wheels of the elevation driving units 1A and 1B are interlocking-connected through a transmission shaft 18. Accordingly, a motor arranged on each elevation driving unit is enough to be small-sized and small power, and also a reduction gear which is necessarily required is enough to be small-sized and lightweight, and also a transmission shaft ranging from the motor to the driving wheel is enough to be small-sized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting / conveying device generally called a drop lifter or a table lifter,
That is, the present invention relates to an elevating / conveying device used for elevating and lowering transportation means such as a transportation train from one side to another side of a traveling route having different levels, and for loading and unloading objects to be transported.

[0002]

2. Description of the Related Art In this type of lifting and lowering apparatus, an lifting and lowering carriage that can be lifted up and down along a column and a lifting and lowering drive rope for the lifting and lowering carriage are used for lifting and lowering and carrying large heavy objects. Two lifting drive units
It is known that the units are arranged side by side and one transporting lifting frame is supported by the lifting carriages of both lifting drive units. In such an elevating / conveying apparatus, it is general that the elevating / lowering ropes of both the elevating / lowering drive units are synchronously driven by one motor with a speed reducer.

[0003] In such a conventional lifting / conveying apparatus, as a motor with a reduction gear for driving the lifting / lowering ropes in both lifting / lowering drive units, a large and large horsepower motor and a large motor capable of withstanding a large transmission torque are used. Not only is a machine equipped with a heavy reducer necessary, but also as a transmission shaft that links the motor with this reducer and the drive wheels of both lifting drive units in an interlocking manner with a large diameter that can withstand a large transmission torque. Since a strong shaft is required, the cost of the entire device has been unavoidably increased.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features will be shown by the reference numerals of the embodiments described later. The elevator transport device of the present invention is a motor that is interlocked with an elevator carriage 6 that can be raised and lowered along columns 4 and 5, an elevator drive rope 8 of the elevator carriage 6, and a drive wheel 9 of the elevator drive rope 8. Two elevator drive units 1 equipped with 10
A and 1B are arranged side by side, and the drive wheels 9 of the lifting drive units 1A and 1B are interlockingly connected to each other by a transmission shaft 18.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. The lifting and lowering and conveying device shown in FIG. 1 includes two lifting and lowering drive units 1A and 1B arranged side by side and one and one carrying member. It is composed of a lifting frame 2. As shown in FIG. 2, each lifting drive unit 1A, 1B is provided with two columns 4, 5 standing on a base 3 installed on the floor, and the columns 4, 5 along the columns. One lifting carriage 6 that can be lifted up and down
And a counterweight 7 that can be raised and lowered between the columns 4 and 5, the lifting carriage 6 and the counterweight 7
Elevating drive ropes (chains, etc.) 8 for suspending and lifting in a fishing bottle type and interlocking them in opposite directions, and the elevator drive ropes 8
It is composed of a reduction gear motor 10 which is interlockingly connected to a drive wheel (a tooth wheel or the like) 9 which is in mesh with.

As shown in FIGS. 1 and 2, arms 11 extending forward are continuously provided to the elevator carriages 6 of the elevator drive units 1A and 1B. Both ends of one transporting lifting frame 2 are supported, and both lifting carriages 6
Are connected and integrated with each other by the transport lifting frame 2.

The elevating and lowering rope 8 in each of the elevating and lowering drive units 1A and 1B is a guide wheel (tooth wheel or the like) 13 which is pivotally supported on a frame 12 which is mounted and fixed between the upper ends of the columns 4 and 5.
And a drive wheel 9 axially supported on the base 3 are vertically hung up and down, and the lifting carriage 6 and the counterweight 7 are provided in an intermediate portion that moves up and down in mutually opposite directions.
And a lower rope portion 8b that is stretched on the guide wheel 13 and a lower rope portion 8b that is stretched on the drive wheel 9.
It is divided into and. Reference numeral 14 is a guide wheel (such as a tooth ring) for hanging the lower rope portion 8b on the drive wheel 9, which is pivotally supported on the base 3 and is housed in the protective case 15 together with the drive wheel 9. It is contained.

As shown in FIGS. 1 and 3, a motor 10 with a speed reducer in each of the lifting drive units 1A and 1B.
Is installed on the base 3 at a position outside each drive wheel 9, and its output shaft 10a has a drive shaft 9a to which the drive wheel 9 is attached and which is supported by the bearing 16 on the base 3.
Is connected to the outer end of the via a coupling 17.
The inner ends of the drive shaft 9a in both the elevating drive units 1A and 1B are connected to both ends of one transmission shaft 18 via couplings 19a and 19b, respectively. Therefore,
The drive wheels 9 of both the elevating drive units 1A and 1B are interlockingly connected to a motor 10 with a speed reducer and at the same time interlockingly connected to each other by a transmission shaft 18. Both ends of the transmission shaft 18 may be supported on the base 3 by bearings.

As shown in FIG. 1, an elevating rail 20 is laid on the elevating frame 2 for transportation, and the elevating carriage 6 of both elevating drive units 1A and 1B raises the elevating frame 2 for transportation to the upper limit position. A fixed rail 21a that is sometimes connected to one end of the elevating rail 20 and a fixed rail 21b that is connected to the other end of the elevating rail 20 when the transport elevating frame 2 is lowered to a lower limit position are installed. .. Thus, for example, in order to transfer a transportation train or the like transferred from the high level fixed rail 21a onto the elevating rail 20 onto the low level fixed rail 21b, the elevating rail 20 includes two elevating drive units 1
It is driven up and down by the lifting carriages 6 of A and 1B. Of course, a transportation train or the like can be transferred from the low-level fixed rail 21b to the high-level fixed rail 21a, and both ends of the elevating rail 20 when the elevating / lowering frame 2 for transportation is in the upper limit position. It is also possible to install a fixed rail to be connected to the above, and use it for lowering a transport train or the like transferred from the fixed rail onto the elevating rail 20 to the loading / unloading level.

According to the above-mentioned structure, when elevating the elevating / lowering frame 2 for transportation, both elevating / lowering drive units 1A and 1B are used.
It suffices to operate the motors with speed reducers 10 in Fig. 1 to rotate the elevator drive ropes 8 in a predetermined direction via the drive wheels 9 in the elevator drive units 1A, 1B. Since the drive wheels 9 (drive shafts 9a) in the drive units 1A and 1B are interlockingly connected to each other by the transmission shaft 18, both drive wheels 9 are synchronized by the transmission shaft 18, and the ascending / descending drive units 1A and 1B.
The elevator drive ropes 8 are driven synchronously so that both elevator carriages 6 are elevated in the same direction and at the same speed.

In the above-described embodiment, the one elevating frame 2 for conveyance is supported by the elevating carriages 6 of the two elevating drive units 1A and 1B.
It is also possible that the transported object supporting means provided continuously to both the lifting carriages 6 simultaneously supports both ends of a long transported object or the like to vertically transport. Further, as shown in FIG. 4, both the elevating drive units 1A and 1B are arranged side by side, and the conveyed object supporting means 22 of the elevating carriage 6 facing each other support both side portions of one conveyed object to elevate and lower. It can also be configured to be transported.

In this example, since the drive shafts 9a of both the elevating and lowering drive units 1A and 1B are parallel to each other, the transmission shaft 1 in the direction orthogonal to the both drive shafts 9a.
Both ends of 8 may be supported on the base 3 by bearings 23, respectively, and the end of the transmission shaft 18 and the free end of the drive shaft 9a may be interlockingly connected by the orthogonal transmission means 24 such as a bevel gear. Further, the upper frame 12 of each lifting drive unit 1A, 1B can be connected to each other by the connecting frame 25. Reference numeral 26 is a guide rail of a conveyor for suspending and transporting an object to be transported, which is installed at a high level, and 27 is a slat conveyor for supporting and transporting the object, which is disposed on the floor surface. Therefore, the lifting / lowering transport device shown in the figure is configured so that the transported object transported along the guide rail 26 of the transported suspended object conveyor is on the transported object supporting / transporting slat conveyor 27 disposed on the floor surface. It is possible to unload the object, or conversely, to load the transferred object on the transferred object supporting and transferring slat conveyor 27 on a transfer train or the like that runs along the guide rail 26 of the transferred object hanging transfer conveyor.

[0013]

As described above, according to the elevating / conveying apparatus of the present invention, the elevating and lowering carriage elevating and lowering drive ropes of the two elevating and lowering drive units arranged in parallel are driven by the respective dedicated motors. The motor installed in each lifting drive unit requires a small horsepower as compared with the case where the lifting drive ropes of both lifting drive units are driven by one motor. In addition to being small and lightweight, the transmission shaft from the motor to the drive wheels can also have a small diameter. Therefore, the cost of the entire device can be reduced. Moreover, since the drive wheels of both lift drive units are interlocked with each other by a transmission shaft, the lift carriages of both lift drive units can be driven completely synchronously without using an electrical synchronous control means. It is possible to safely and satisfactorily carry out the lifting and lowering transportation operation on both lifting and lowering carriages.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an elevating / conveying device.

FIG. 2 is a schematic side view illustrating the configuration of a lifting drive unit.

FIG. 3 is a schematic cross-sectional plan view illustrating a drive system of the entire lifting and lowering conveyance device.

FIG. 4 is a perspective view showing another example of an elevating and conveying device.

[Explanation of symbols]

 1A, 1B Elevating / lowering drive unit 2 Elevating / conveying frame for transporting 4,5 Pillar 6 Elevating / carrying 7 Counterweight 8 Elevating / driving rope such as chain 9 Drive wheel 9a Drive shaft 10 Motor with reduction gear 17, 19a, 19b Coupling 18 Transmission shaft 24 Orthogonal transmission means such as bevel gear

Claims (1)

[Claims] 1. Two elevator drive units including an elevator carriage that can be raised and lowered along a column, an elevator drive rope for the elevator carriage, and a motor that is interlocked with drive wheels of the elevator drive rope. An elevating / conveying device which is provided with the driving wheels of the respective elevating / lowering drive units interlockingly connected to each other by a transmission shaft.