JP2743721B2 - One-post type vertical transport device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting / lowering device generally called a drop lifter or a table lifter.
In other words, it guides an elevating transport device, particularly an up / down carriage, which is used for lifting and lowering a transport means such as a transport train from one side of the traveling path at different levels up and down to the other, and for loading and unloading an object to be transported. The present invention relates to a lifting and lowering transport device having one supporting column.

[0002]

2. Description of the Related Art In a conventional single-post type elevating / conveying device of this type, a rectangular member for a guide rail is fixed to the left and right sides of a cylindrical post along the length direction of the post, and the flat shape is U-shaped. The vertical carriage has a front-rear positioning guide roller that sandwiches the pair of left and right guide rail square members from front and rear, and a left and right positioning guide rail that abuts against the end surface of the guide rail square member. .

[0003] In such a conventional configuration, even if the guide rail can be integrally formed with the column,
The number of guide rollers for positioning in the front-rear direction has increased,
The cost is high, and the guide rails protrude outside of the pillars, so there is a risk that the protruding guide rails may be damaged by contact with other objects when transporting the pillars to the installation location or during installation work. there were.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features are indicated by reference numerals in the embodiments described later. The single-post type elevating / conveying device of the present invention includes a small-width concave groove rail portion 9 on each of a pair of left and right short sides, and a large-width concave groove rail portion 10 on one of a pair of front and rear long sides. A column 1 having a substantially rectangular cross-section, which is formed continuously in the length direction, is erected, and the lifting carriage 3 which is raised and lowered along the column 1 by lifting driving means 4 includes the two narrow groove rail portions. The guide rollers 11 and 12 for positioning in the front-rear direction which are fitted into the guide rail 9 and the guide rollers 13 and 14 for positioning in the left-right direction which respectively contact the left and right side surfaces 10a and 10b of the large groove rail 10 are supported. It is characterized by points.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2A, reference numeral 1 denotes a box-like base 2 installed on a floor. One support, 3 is a lifting carriage that can move up and down along the support 1, and 4 is a lifting drive means that drives the lifting carriage 3 up and down. The lifting carriage 3 is provided with a cantilever arm 5 protruding therefrom.
A guide rail 6 for guiding the transport train is mounted horizontally. Thus, when the lift carriage 3 is at the ascending limit height, the guide rail 6 connects upper guide rails 7a and 7b erected at a predetermined height, and the ascending and descending carriage 3 is moved to the descending limit height. When lowered, the guide rail 6 is connected to the lower guide rail 8 erected at a predetermined height, so that the upper guide rail 7a,
The transporting train guided by the guide rail 7b is transferred to the lower guide rail 8 by using the guide rail 6 of the lifting carriage 3, or conversely, is moved from the lower guide rail 8 to the upper guide rails 7a, 7b. You can move it. Further, the transport train guided by the upper guide rails 7a and 7b can be lowered to a predetermined loading / unloading level using the guide rails 6 of the lifting carriage 3.

The column 1 is an integrally molded product of aluminum. As shown in FIG. 2B, a narrow groove rail portion 9 is provided at the center of each of a pair of left and right short sides, and a pair of front and rear long sides is formed. At the center of one of the long sides, a large groove rail 10
Are formed continuously in the longitudinal direction, and are erected on the box-shaped base 2 with the large-groove groove rail portion 10 facing the front side. The lifting carriage 3 includes guide rollers 11 and 12 for positioning in the front-rear direction, which are respectively fitted to small-width concave groove rails 9 located on the left and right sides of the support 1, and large-width groove rails of the support 1. 10 left and right sides 10a, 10
guide rollers 1 for positioning in the left-right direction that are individually approaching b
3, 14 are pivotally supported. Of course, these guide rollers 11 to 14 are, as shown in FIG.
Lift carriages 3 so that the
At both upper and lower ends.

As shown in FIGS. 1 and 2A, the lifting drive means 4 includes a lifting drive cable 15 such as a chain connected to the lifting carriage 3 at both ends thereof, and a support column 1 in the box-shaped base 2. Drive wheel (tooth wheel, etc.) 16 supported directly below
And a motor 17 with a speed reducer for rotating the drive wheels 16 in any direction. One end of the lifting drive cable 15 is connected to the arm 5 of the lifting carriage 3.
Of the column 1 via guide wheels 19 and 20 which are pivotally supported at both front and rear ends of a projecting frame 18 which is cantilevered from the upper end of the column 1 to the front side. It droops to the rear side, enters the box-shaped base 2 and
After being hung on the base 6, it escapes upward from the box-shaped base 2, passes through the front side of the column 1, and is connected to the lower end of the front part of the lifting carriage 3.

Accordingly, the driving wheels 16 are driven by the motor 17.
The lifting carriage 3 can be moved up and down along the column 1 by rotating the lifting drive cable 15 forward and reverse through the guide rails 6. The train can be moved up and down to change the route, etc.
By mounting a fork or a hanger for supporting the transported object in place of the guide rail 6 on the lifting carriage 3, loading and unloading of the transported object on a transport train or the like,
It can also be used as a means for transferring an object to be transferred between different high and low level transfer devices.

The support 1 can be specifically constructed as follows. That is, as shown in FIG.
A pair of left and right member mounting concave grooves 21a to 21f that are continuous in the length direction are provided at a total of six places, that is, a pair of left and right short sides of the support 1 and two places on the left and right of each of the front and rear long sides. It can be formed by a ridge 22 having an L-shaped cross section which is integrally provided from the surface. Note that the member mounting concave grooves 21a and 21b on both short side portions are formed so as to be distributed to the left and right sides of the small-width concave groove rail portion 9. The concave grooves 21a to 21f for attaching members are used to attach a connecting plate when adding a column 1 having a unit length, or to attach a bracket for attaching a column to the box-shaped base 2 at the lower end of the column 1, or It can be used for mounting the detector, the member to be detected, and the like to the column 1.

It is desirable that the column 1 is formed in a hollow shape for weight reduction and material saving. In this case, a reinforcing inner wall portion 23 for dividing an internal space into a plurality of portions is integrally formed as shown in the figure. Further, a through hole 24 having a true circular cross section continuous in the length direction can be formed at a position adjacent to the inside of both the narrow groove rail portions 9 on the center axis parallel to the long side direction. . The through-holes 24 are provided with centering pins for centering between the columns when connecting the columns 1 of unit length in the longitudinal direction and connecting the columns to each other when the columns 1 are erected on the base. It is used when fitting between them. 25
Is a ridge integrally formed at a center position of a long side portion having no groove rail portion so as to be continuous over the entire length of the column 1, and the column 1 is a lifting carriage in a two-column type vertical transport device. When used as a guide post, it can be used as a guide rail for elevating and lowering the counterweight, but it also has the effect of compensating for a decrease in strength due to the formation of the large-width concave groove rail portion 10.

In the above embodiment, the column 1 is moved up and down
The column 1 is erected on the box-shaped base 2 having the built-in drive wheels 16 and the motor 17. However, the method of erection of the column 1 is not limited to this. They can also be combined. Further, the lifting drive means 4 of the lifting carriage 3
The drive wheel 16 and the motor 17 for driving the lifting drive cable 15 can be arranged on the upper end side of the column 1, for example, on the overhang frame 18.

[0012]

According to the single-column type lifting and conveying apparatus of the present invention which can be implemented as described above, the vertical carriage is guided by the concave groove rail portion which is recessed into the side surface of the column having a substantially rectangular cross section. Therefore, at the time of carrying work to the installation location of the column or at the time of installation work, there is no possibility that the carriage guide rail portion may be damaged by contact with other objects, and the work can be easily performed.

In addition, since the guide rollers for positioning in the front-rear direction are engaged with the pair of left and right small-width concave groove rails to perform positioning in the front-rear direction, one roller is required for one position where positioning in the front-rear direction is required. Can be used, and the number of rollers for positioning in the front-rear direction can be reduced as compared with the case where rollers that sandwich the protruding rail from the front and rear are used. Also, instead of abutting the left-right positioning roller on the bottom surface of the small-width concave groove rail portion to which the front-rear positioning roller is fitted, a large-width concave groove rail portion formed on the long side of the column is used. Since the left and right side surfaces are separately brought into contact with each other, the support shaft of the left and right positioning roller can be directly supported on the back surface of the lifting carriage facing the long side of the support, and the left and right positioning can be performed. The support structure of the roller is very simple. For this reason, the entire lifting / lowering transport device can be configured at low cost.

[Brief description of the drawings]

FIG. 1 is a front view showing the entire lifting and lowering transport device.

FIG. 2A is a partially cutaway side view of the entire elevating and lowering transport device, and FIG. 2B is a cross-sectional plan view illustrating a related structure between a column and an elevating carriage.

FIG. 3 is a vertical sectional side view illustrating a related structure between the column and the lifting carriage.

FIG. 4 is a perspective view illustrating a specific structure of a column.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop 2 Box-shaped base 3 Elevating carriage 4 Elevating drive means 6 Guide rail of transport train 7a Guide rail of transport train 7b Guide rail of transport train 8 Guide rail of transport train 9 Narrow groove groove 10 Large concave groove rail portion 10a Side surface of large concave groove rail portion 10b Side surface of large concave groove rail portion 11 Front / rear positioning guide roller 12 Front / rear positioning guide roller 13 Left / right positioning guide roller 14 Right / left positioning Guide roller 15 Elevating drive cable such as chain 16 Drive wheel (tooth wheel, etc.) 17 Motor with reduction gear

Claims (1)

(57) [Claims] 1. A pair of left and right short sides each having a narrow groove rail, and one of a pair of front and rear long sides having a large groove rail continuously formed in the longitudinal direction. A vertical carriage having a substantially rectangular cross section is set up and raised and lowered along the support by vertical drive means. A single-post type lifting / lowering transport device which supports a left-right positioning guide roller separately contacting the left and right side surfaces of the large-width concave groove rail portion.