JPH05162988A - Elevation transporting device - Google Patents

Abstract

PURPOSE:To obtain an elevation transporting device which can install a motor equipped with reduction gear in an exceedingly sample manner and realizes cost cut of the whole device by installing a fixed part for turning stop at an eccentric position separated from the output shaft of a reduction gear part and joining a bracket for turning stop with the fixed part. CONSTITUTION:At the reduction gear part 15 of a motor 17 equipped with reducing gear, a fixed part 25 for turning stop is formed at the edge part on a motor 16 side, and the fixed part 25 is joined with a bracket 26 for tuning stop which is installed on a rack board 2 by a connecting pin 27 which is parallel to the output shafts 14a and 14b. Accordingly, when both the elevation drive units 1A and 1B are driven by the motor 17 equipped with reduction gear, the motor 17 equipped with reduction gear tends to be revolved in the reverse direction around the output shafts 14a and 14b by the reaction force, and this reaction force is received on the rack board 2 side through the joint between the fixed part 25 for turning stop and the bracket 26 for turning stop on the rack board 2 side, and the motor 17 equipped with reduction gear is stabilized.

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.

Thus, in the conventional lifting / lowering apparatus of this type, the driving wheels for driving the lifting / lowering ropes of both lifting / lowering drive units are linked together by one driving shaft, and the weight balance of the entire apparatus is achieved. In order to improve the performance and minimize the width of the device, the output shaft of the motor with reduction gear installed on the pedestal at the side of the intermediate position of the drive shaft, through the idle gear in the middle part of the drive shaft. Are linked together.
In such a conventional configuration, at least two large idle gears are required for linking the motor with the reduction gear and the drive shaft, and there is a drawback that the cost including the bearing and the protective case becomes high. there were.

[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 elevating / conveying device of the present invention includes two elevating / lowering drive units 1A, 1B each including an elevating / lowering carriage 7 capable of ascending / descending along the columns 5, 6 and an elevating / lowering rope 9 for the elevating / lowering carriage 7.
Output shafts 14a, 14b, which are arranged side by side and have driving wheels 12 for driving the lifting drive ropes 9 of the respective lifting drive units 1A, 1B concentrically projected from the speed reducer portion 15 of the motor 17 with a speed reducer to the left and right sides. And the fixed parts 25 and 28 for preventing rotation are provided at eccentric positions apart from the output shafts 14a and 14b of the speed reducer part 15, respectively.
The feature is that anti-rotation brackets 26, 29 are connected to 5, 28.

[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 / conveying device shown in FIG. 1 has two lifting drive units 1A and 1B arranged in parallel and one lifting drive unit. It is composed of a gantry 2 and a single lifting frame 3 for transportation. As shown in FIG. 2, each of the lifting drive units 1A and 1B has two columns 5 and 6 standing on a base 4 installed on the floor and the columns 5 and 6, respectively. One lifting carriage 7 that can be lifted up and down, a counterweight 8 that can be lifted between the struts 5 and 6, and the lifting carriage 7 and the counterweight 8 that are suspended in a fishing bottle type and interlocked in opposite directions. It is composed of a lifting drive rope (chain etc.) 9.

As shown in FIG. 2, arms 10 extending forward are connected to the elevator carriages 7 of the elevator drive units 1A and 1B, and the arms 10 of both elevator carriages 1 form one unit. Both ends of the carrying lifting frame 3 are supported, and the lifting carriages 7 are connected and integrated with each other by the carrying lifting frame 3. On the other hand, the columns 5 and 6 of the two lifting drive units 1A and 1B
One pedestal 2 is placed and fixed between the upper ends of the
Thus, the upper ends of the four columns 5 and 6 are connected and integrated. Arm-shaped frames 11a and 11b extending from the gantry 2 to the upper and lower positions of the transport lifting / lowering frame 3 are connected in a cantilever manner so as to correspond to the lifting / lowering drive units 1A and 1B.

As shown in FIG. 2, the lifting drive rope (chain) 9 in each of the lifting drive units 1A and 1B has a drive wheel 12 axially supported on a pedestal 2 and an arm-shaped frame 11.
The weight suspending lower end 9a of the rope suspended from the drive wheel 12 by the guide wheel 13 pivotally supported on the tip side of the a and 11b.
Is connected to the upper end of the counterweight 8, and the guide wheel 1
Carriage hanging lower ends 9b of the ropes hanging from 3 are connected to positions near both ends of the carrying lifting frame 3 corresponding to the lifting carriages 7.

As shown in FIG. 3, output shafts 14a and 14b are mounted on the pedestal 2 on both sides of the speed reducer portion 15 and the side portions thereof away from the output shafts 14a and 14b. A motor 17 with a speed reducer including a motor 16 is provided at a substantially central position in the longitudinal direction on the gantry 2, and the output shafts 14a and 14b are connected to the elevator drive units 1A and 1B.
Is supported by bearings 18a and 18b that support the output shafts 14a and 14b at positions substantially concentric with the drive wheel 12. Then, both output shafts 14a and 14b of the motor 17 with a speed reducer and the both lift drive units 1A,
The drive wheel 12 in 1B is interlockingly connected by drive shafts 19a and 19b. 20 is a coupling which is used as necessary, and includes 21a, 21b and 22a, 2
Reference numeral 2b is a bearing that axially supports the drive wheel 12.

As shown in FIG. 1, the drive shafts 19a,
The drive wheels 12 may be directly attached to the outer ends of 19b.
In this case, the two ends of the drive shafts 19a and 19b are connected to the bearing 23.
A, 23b and 24a, 24b may be supported. In FIG. 1, the output shafts 14a, 1 of the motor 17 with a reducer are provided.
The coupling for connecting the drive shafts 4b and the drive shafts 19a, 19b is omitted in the drawing.

Reduction gear portion 1 of the reduction gear motor 17
5, a fixed portion 25 for preventing rotation is provided at an end portion on the side where the motor 16 is provided, and the fixed portion 25 is attached to the rotation preventing bracket 26 mounted on the pedestal 2 as shown in FIG. To the output shafts 14a and 14b by a connecting pin (bolt nut or the like) 27 parallel to the output shafts 14a and 14b. In this case, between the connecting pin 27 and the fixed portion 25 for preventing rotation,
Alternatively, the connecting pin 27 and the anti-rotation bracket 2
An elastic material for shock absorption can be interposed between the elastic member 6 and 6. Of course, as shown in FIG. 5, the fixed portion 28 for preventing rotation which is flat in the horizontal direction is provided so as to project from the speed reducer portion 15.
The fixed portion 28 is placed in a U-shaped bracket 29 for preventing rotation, which is mounted on the pedestal 2, and the cushioning elastic members 3 are vertically arranged.
It is also possible to fit them through 0a and 30b, and to connect them by a connecting pin 31 that penetrates in the vertical direction.

As shown in FIGS. 1 to 3, an elevating rail 32 is provided below the carrying elevating frame 3 and a bracket 3 is provided.
Fixed rails 34a and 34b connected to both ends of the lift rail 32 when both lift carriages 7 are lowered to the lower limit position when both lift carriages 7 are lowered to the lower limit position. The lifting rail 32
And a fixed rail 34c connected to one end of the. Thus, for example, high-level fixed rails 34a, 34
In order to transfer a transportation train or the like, which has been transferred from above b onto the lift rail 32, onto the low-level fixed rail 34c, the lift rail 32 has two lift drive units 1A, 1B.
Is driven up and down by. Of course, the low level fixed rail 3
When there is no 4c, it can also be used to lower the transportation train or the like that has been transferred onto the lifting rail 32 to the loading / unloading level.

According to the above configuration, the motor 1 with a reducer
By operating the motor 16 of No. 7 and decelerating the rotation of the motor output shaft to a predetermined number of revolutions by the reduction mechanism incorporated in the speed reducer portion 15 and outputting the reduced speed to both output shafts 14a, 14b, Drive shaft 19 on each of 14b
The drive wheels 12 of both lift drive units 1A and 1B, which are interlockingly connected via a and 19b, are rotationally driven in the same direction at the same speed. As a result, the lifting drive ropes 9 of both the lifting drive units 1A and 1B are driven, and the respective lifting carriages 7 are driven up and down synchronously, so that one transport lifting frame 3 can move smoothly up and down. become. Thus, the elevating rails 32 that move up and down together with the frame 3 can be used to switch the route of the transportation train as described above.

In this way, the both lift drive units 1A, 1B
When the motor 17 with a speed reducer is driven, the motor 17 with a speed reducer tries to rotate in the opposite direction around the output shafts 14a and 14b due to the reaction force. Non-rotating fixed part 25 or 2
8 and the brackets 26 and 29 for preventing rotation on the gantry 2 side are received by the gantry 2 side, and the motor 1
7 is stable.

In the above embodiment, the elevator carriages 7 of the two elevator drive units 1A and 1B are used to support one transport elevator frame 3.
It is also possible to carry out lifting and lowering while simultaneously supporting both ends of a long object to be conveyed by means of the object to be conveyed supporting means which is continuously provided on both the lifting carriages 7. It is also possible to arrange both the elevating and lowering drive units 1A and 1B so as to be opposed to each other, and to support both sides of one conveyed object by means of the conveyed object supporting means of the raising and lowering carriage 7 facing each other so as to convey the same vertically. It is possible.

[0015]

As described above, according to the elevating / conveying apparatus of the present invention, the elevating carriage drive ropes of the two elevating drive units arranged in parallel are synchronously driven by the single motor with the speed reducer. In addition, the reduction gear motor can be placed at an intermediate position between the two lifting drive units to reduce the size of the entire apparatus and improve the weight balance. Since the output shaft is concentrically projected from both the left and right sides of the machine part, and the rope drive wheels in both the lifting drive units are interlockingly connected to both the output shafts, the motor with the reduction gear and the drive shaft middle part are connected. It eliminates the need for idle gears, their bearings, and protective cases that interlock. Of course, the motor with reduction gear can be installed by an extremely simple method in which the output shafts on both sides of the motor are supported by bearings and the fixed portion for preventing rotation is coupled to the rotation preventing bracket on the fixed frame side. Therefore, the cost of the entire apparatus can be reduced significantly.

[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 plan view illustrating a drive system of the entire lifting and lowering conveyance device.

FIG. 4 is a side view showing an installation structure of a motor with a reducer.

FIG. 5 is a side view showing another installation structure of the motor with a reducer.

[Explanation of Codes] 1A, 1B Elevating / lowering drive unit 2 Frame 3 Conveying elevating / lowering frame 5,6 Supporting post 7 Elevating / carrying 8 Counterweight 9 Elevating / driving rope 12 Drive wheel 13 Guide wheel 14a, 14b Output shaft of motor with reducer 15 Reducer part 16 Motor 17 Motor with reducer 19a, 19b Drive shaft 25, 28 Non-rotating fixed part 26, 29 Non-rotating bracket 27, 31 Connecting pin

Claims (1)

[Claims] 1. An elevating and lowering drive unit comprising two elevating and lowering drive units, each of which includes an elevating and lowering carriage that can be moved up and down along a support column, and an elevating and lowering drive line of the elevating and lowering carriage, and drives the elevating and lowering drive lines of the respective elevating and lowering drive units. The drive wheels are respectively interlockingly connected to the output shafts that concentrically project from the speed reducer portion of the motor with the speed reducer to the left and right sides, and the fixed portion for rotation prevention is provided at an eccentric position away from the output shaft of the speed reducer portion. Elevating / conveying device provided with a fixed bracket to the fixed part