JPH0355344B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is useful for transferring a carrier from one of two guide rails of different heights to the other, or for transferring a carrier on a guide rail at a higher level. This invention relates to an elevating guide rail device used for elevating cargo to and from low-level loading/unloading work positions.

(Prior art and its problems) An elevating guide rail device used for the above purpose has a guide rail support member protruding from one side of an elevating body that is supported by a column so as to be able to rise and fall. A guide rail is supported on a rail support member, and when the elevating body stops at a predetermined stop position, the guide rail is configured to connect with a fixed side guide rail.

In such an elevating guide rail device, the guide rail support member cannot be suspended by the elevating drive chain at a position near the guide rail. In other words, the elevating object must be suspended by the elevating drive chain at a position near the pillar. Therefore, the guide rail on the guide rail support member cantilevered from the elevating body is caused by the deflection of the guide rail support member and the play between the elevating guide rail on the column side and the elevating guide roller on the elevating body side. Due to the inclination of the guide rail support member, the height will be slightly lower than the stop level of the elevating body.

At the lower limit position, there is no problem because the guide rail support member can be received by the stopper on the fixed side directly below the guide rail, but at the upper limit position or intermediate stop position, the stopping position of the elevating body is fixed by the guide rail on the fixed side. Rather than setting it to match the level of the guide rail, it must be set so that the guide rail connects accurately with the fixed side guide rail. However, as described above, since the inclination of the guide rail itself due to the deflection or inclination of the guide rail support member cannot be corrected, there is a risk that a step may occur between the guide rail and the guide rail on the fixed side.

(Means for Solving the Problems) The present invention proposes an elevating guide rail device that can solve the conventional problems as described above. A support means including a movable base that can move horizontally into and out of the vertical path is disposed beside the vertical path of the guide rail support member when it is at the stop position, and the movable platform has a Providing a support portion that slightly pushes up and supports a position near the guide rail in the guide rail support member stopped at the upper limit position or intermediate stop position when advancing to the upper limit position or intermediate stop position;
The present invention is characterized in that the guide rail on the guide rail support member supported by the support portion is connected to the guide rail on the fixed side.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a pair of left and right vertical supports, each of which is provided with an elevating guide rail 2. Reference numeral 3 denotes a pair of left and right elevating bodies that are supported by both vertical columns 1 so as to be able to rise and fall, and are interconnected and integrated by a guide rail support member 4 disposed on one side of the column 1. A guide rail 5 is supported on 4. 6 is a hanging chain that drives the lifting body 3 up and down,
It engages with a drive gear 8 that is pivotally supported on a pedestal 7 installed between the upper ends of the column 1, and a counterweight that moves up and down within the column 1 is connected to the other end.
Reference numeral 9 denotes a motor that drives the drive gear 8 in any forward or reverse direction. Reference numeral 10 denotes an upper limit stopper for regulating the upper limit position of the ascending and descending body 3, and is attached to a frame 11 extending downward from the pedestal 7 so that its height can be adjusted.

At both ends of the guide rail length direction of the guide rail support member 4, as shown in FIGS. 3 and 4, there are horizontal shaft rollers 12a, 12b for steady rest in the left and right direction (guide rail length direction) and horizontal shaft rollers 12b for steady rest in the front and back direction. The steady rest horizontal shaft rollers 13a, 13b and the supported horizontal shaft roller 14 are each pivotally supported.
A fixed frame 15 is installed on the outer side of the upper end of the lifting path of the guide rail support member 4, and a vertical steady rest guide of an appropriate length is provided on the fixed frame 15 in proximity to each of the horizontal shaft rollers 12a to 13b for steady rest. The support means 1 pushes up the guide rail support member 4 at a position near the guide rail 5 via the rail 16 and the supported horizontal axis roller 14.
7 is provided.

As shown in FIG.
An inclined guide surface 21a and a horizontal support surface 21b following the inclined guide surface 21a are formed on the upper side of the distal end of the movable table 20, which is supported through the movable section 9 so as to be freely retractable in the horizontal direction.
A cylinder unit 22 for moving the 0 in and out is also installed.

In FIGS. 1 and 2, reference numeral 23 denotes a fixed guide rail connected to the guide rail 5 at the upper limit position. In FIG. 4, reference numerals 24a to 24d refer to guide rollers for longitudinal steadying that are pivotally supported by the elevating body 3, and by sandwiching the elevating guide rail 2 of the column 1 from the front and back, the elevating body 3 and the guide rail support member 4 are regulates the posture of In addition, as shown in FIG. 3, the elevating body 3 is pivotally supported by a guide roller 25 for stopping the movement of the elevating member 3 from left and right, which abuts on the elevating guide rail 2 from the left and right.

When connecting the lifting guide rail 5 to the fixed side guide rail at a low level or from the loading/unloading work position to the fixed side guide rail 23 at a high level, the motor 9 rotates the drive gear 8 to drive the lift. The elevating body 3 is raised along the elevating guide rail 2 of the support column 1 by a hanging chain 6. As the elevating body 3 rises, the guide rail support member 4 and the guide rail 5 rise together.
When reaching near the upper limit, the horizontal axis rollers 12a to 13b for steady rest on both ends of the guide rail support member move to the guide rail 16 for steady rest on the fixed frame 15 side.
By entering the inside of the guide rail 16 and rolling the rollers 12a to 13b close to the guide rail 16, the front, rear, left and right positions of both ends of the guide rail support member 4 are regulated. In this state, when the elevating body 3 reaches the upper limit position and comes into contact with the upper limit stopper 10, the motor 9 stops rotating the drive gear 8 and applies a brake to lock the drive gear 8.

As a result, the end of the lifting guide rail 5 faces the end of the fixed guide rail 23, but in this state, the movable base 2 of the lifting support means 17
0 is advanced by the cylinder unit 22, and as shown in FIGS. 4 and 5, the supported horizontal shaft rollers 14 at both ends of the guide rail support member are scooped up by the tip inclined guide surface 21a of the movable base 20 and placed on the horizontal support surface. Push up the roller 14 up to 21b. That is, the position of the guide rail support member 4 near the guide rail 5 is pushed up by a slight amount via the supported horizontal axis roller 14.

When the elevating body 3 is raised and lowered, the vertical load acting on the guide rail support member 4 side causes the strut 1 to move up and down.
The rollers 24a and 24d shown in FIG. 4 are in contact with the lifting guide rail 2, and the rollers 24b and
There is a slight play between c and the lifting guide rail 2. When both ends of the guide rail support member 4 are pushed up by a certain amount by the push-up support means 17 as described above, the rollers 24b, 24c
The existence of a clearance between the guide rail 2 and the lifting guide rail 2 allows the guide rail support member 4 to move upward.

By pushing up both ends of the guide rail support member 4, the guide rail support member 4 is moved to the guide rail 5.
It becomes completely horizontal in the direction (front-back direction) perpendicular to the length direction of the , and is connected to the fixed side guide rail 23 without any step. In other words, the installation heights of the upper limit stopper 10 and the push-up support means 17 are adjusted so that such a result can be obtained. Lifting guide rail 5
Once connected to the fixed guide rail 23, the carriage can be transferred between the guide rails 5 and 23.

Incidentally, the elevating guide rail 5 can also be connected to a fixed side guide rail having an intermediate height. In this case, when a stopper for regulating the ascent stop position of the elevating body 3 is also used, the stopper must be configured to be movable in and out of the elevating path. Of course, it is also possible to carry out the process without using such a stopper.

(Operations and Effects of the Invention) As described above, according to the elevating guide rail device of the present invention, after the elevating body is stopped at the original ascending position or the intermediate stop position, the movable base of the supporting means is advanced,
By slightly pushing up the guide rail support member protruding from the elevating body in a cantilevered manner near the guide rail by a support portion of the movable platform (in the embodiment, the inclined guide surface 21a and the horizontal support surface 21b), the elevating and lowering is performed. It is possible to correct the deflection and inclination of the guide rail support member with respect to the body, and to completely connect the guide rail supported on the guide rail support member to the fixed side guide rail without creating a step, and to It is possible to safely and smoothly transfer the transport vehicle between the guide rails.

[Brief explanation of drawings]

Figure 1 is a front view of the main part, Figure 2 is a side view of the main part, Figure 3 is an enlarged cross-sectional plan view of the main part, Figure 4 is a longitudinal side view of the same, and Figure 5 is a side view of the push-up support means. It is a diagram. 1... Support column, 2... Lifting guide rail, 3...
Lifting body, 4... Guide rail support member, 5... Lifting guide rail, 6... Hanging chain for lifting/lowering drive, 10... Upper limit stopper, 12a to 13b...
... Horizontal shaft roller for steady rest, 14 ... Horizontal shaft roller for supported object, 15 ... Fixed frame, 16 ...
... Guide rail for steady rest, 17 ... Push-up support means, 18 ... Guide rail, 20 ... Movable base, 21a ... Inclined guide surface, 21b ... Horizontal support surface, 22 ... Cylinder unit, 23 ... Fixed Side guide rails, 24a to 24d...Guide rollers for back and forth steady rest.

Claims (1)

[Claims] 1. A guide rail support member is provided to protrude to one side from an elevating body that is supported by a support so that it can be raised and lowered, and the guide rail is supported on this guide rail support member, so that the elevating body is at the upper limit position or an intermediate stop position. At a certain time, beside the ascending and descending path of the guide rail support member,
A supporting means is provided with a movable platform that can move horizontally into and out of the ascending/descending path, and the movable platform is provided with the support means that is provided with the movable platform that is stopped at the ascent limit position or intermediate stop position when advancing into the ascending/descending path. A support part is provided that slightly pushes up and supports a position near the guide rail on the guide rail support member, and the guide rail on the guide rail support member supported by the support part connects with the fixed side guide rail. Elevating guide rail device.