JPH0640519A - Wheel unit for travel bogie traveling along guide rail - Google Patents

Abstract

PURPOSE:To simplify the work without requiring to adjust the fitting relation between a wheel and pinch rollers by integrally fitting the travel wheel and the pinch rollers to a bracket. CONSTITUTION:A travel bogie 12 is provided with a pair of the right and left wheel units 16, and the wheel unit 16 is provided with a bracket 18, a wheel 25 mounted on a guide rail 9 rotatably provided on the bracket 18, and a pair of pinch rollers 27 pinching the guide rail 9. The wheel units 16 are merely fitted at the preset positions of the travel bogie 12 of a stacker crane 11, i.e., the mutual positional relation between the wheel 25 and pinch rollers 27 is not required to be adjusted when they are fitted at the lower section of the travel bogie 12, thus the fitting of the wheel 25 and pinch rollers 27 is made simpler than that by the prior art.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel unit for a traveling carriage that travels along a guide rail, which is suitable as a wheel unit for a stacker crane in an automatic warehouse.

[0002]

2. Description of the Related Art The following is known as a traveling mechanism of a traveling carriage, such as a stacker crane, which travels along a conventional guide rail. That is, in the lower part of the stacker crane, a pair of wheels mounted on the guide rails are mounted via bearings, and a pair of clamping rollers for clamping the guide rails from both sides in a pair with these wheels are provided. Are known.

[0003]

Disadvantages of the Prior Art The conventional traveling mechanism has the following drawbacks. That is, since the wheels and the nipping rollers had to be separately attached to the lower part of the stacker crane, that is, the wheels and the nipping rollers had to be individually attached while adjusting the installation positional relationship, that work However, it had the drawback of being troublesome and time-consuming.

[0004]

[Means for Solving the Disadvantages] The present invention adopts the following means in order to eliminate the above disadvantages. The present invention includes a bracket, a wheel provided on the bracket and mounted on a guide rail, and a pair of nipping rollers provided on the bracket for nipping the guide rail.

[0005]

The present invention has the following functions. When mounting a wheel unit having wheels and a nipping roller at a set position on the lower part of a stacker crane (traveling carriage), that is, when mounting the relative positional relationship between the wheel and the nipping roller on the lower part of the stacker crane (traveling carriage). Since there is no need for adjustment, the wheels and the nip rollers can be easily attached as compared with the conventional method.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. In this specification, the front means the front side of FIG. 1, the rear means the back side, the left means the left side of FIG. 1, and the right means the right side of FIG.

The rack device 1 erected on the floor surface has a large number of front columns 2 arranged at right and left at predetermined intervals, and rear columns arranged at predetermined intervals behind these front columns 2. It has a support column 2 and a large number of article support members 4 provided on the front and rear support columns 2, and the article storage shelf 3 is formed by a pair of left and right article support members 4 facing each other without the support column 2 interposed therebetween.
Is configured. A fork passage gap 5 is provided between the pair of left and right article support members 4 to allow a slide fork 15 to be described later to move in the vertical direction. The article storage shelf 3
The inlet / outlet opening 6 of the front side faces the front side.

A pair of upper and lower guide rails 9 are arranged in the stacker crane passage 8 in front of the rack device 1 so that the longitudinal direction thereof is oriented in the left and right directions, and the stacker crane 11 is guided by these guide rails 9 so as to be movable left and right. It is designed to be. This stacker crane 11
A traveling carriage 12, an elevating stand 14 that can be raised and lowered by a pair of left and right masts 13 provided on the traveling carriage 12, and a vertically movable slide mechanism provided on the elevating stand 14 by a well-known forward and backward mechanism. It has a slide fork 15. As is well known, the slide fork 15 pulls the article W into the elevating table 14 by performing operations of projecting the article W downward, lifting the article W by raising the elevating table 14 and retracting the article W to the elevating table 14 side. The article W can be unloaded onto the article storage shelf 3 or the like by the reverse operation.

The traveling carriage 12 has a pair of left and right wheel units 16. As shown in FIGS. 4 to 6, the wheel unit 16 includes a bracket 18, a wheel 25 mounted on a guide rail 9 rotatably provided on the bracket 18, and a guide rail 9 provided on the bracket 18. It has a pair of nipping rollers 27 for nipping. The bracket 18 includes a top wall 19, a pair of front and rear axle supporting side walls 20 for supporting an axle 26 of a wheel 25, and a pair of left and right wheel peripheral surface opposing side walls 21 opposed to a peripheral surface of the wheel 26.
And has an axle supporting side wall 2 of the bracket 18.
A code guide groove 22 having an inclined bottom surface is formed on the side wall 21 facing the wheel peripheral surface of 0 or one of the wheels. The wheel unit 1
6 is fitted in a mounting plate 23 having a positioning recess 24 in which the top wall 19 is fitted, which is mounted in the traveling carriage 12;
It is bolted. With such a configuration, as long as the mounting position of the mounting plate 23 with respect to the traveling carriage 12 is accurately performed, the position of the wheel unit 16 with respect to the traveling carriage 12 can be adjusted by fitting the top wall 19 into the positioning recess 24. It can be determined easily and accurately. A rotating shaft of a forward / reverse rotatable traveling motor 29 attached to the traveling carriage 12 is power-connected to an axle 26 of the right wheel unit 16 (see FIG. 7).

An elevating motor 30 for the elevating table 14 is attached to the traveling vehicle 12 in the vicinity of the traveling motor 29. By driving the lifting motor 30, a known lifting mechanism (not shown) including a hanging chain and the like.
Thus, the lifting table 14 can be moved up and down.

A control panel 33 is attached to the left side of the traveling carriage 12. This control panel 33 and the traveling motor 2
9 and the lifting motor 30 are connected by a cord 34 (a cord having a signal line and a power supply line). These cords 34 are provided by an opening 35 formed on a side wall of the traveling carriage 12 from the traveling motor 29 or the lifting motor 30.
After reaching the inside of the traveling vehicle 12 through (see FIG. 2),
The opening 3 formed in the upper wall of the traveling carriage 12 and the mounting plate 23
6 (see FIG. 4) is exposed to the upper side and connected to the control panel 33. The upper portion of the cord guide groove 22 of the left wheel unit 16 is located so as to face the opening 36. With such a configuration, the cord 34 can be exposed upward through the opening 36 through the cord guide groove 22 without undue bending.
Further, the cord 34 can be prevented from coming into contact with the wheels 25. Incidentally, it is of course possible to adopt the lead-out structure of the cord 34 on the left side on the right side. Further, a known power feeding trolley (not shown) provided on the upper part of the stacker crane 11, which is in sliding contact with a known power feeding rail (not shown) arranged in parallel with the upper guide rail 9, is connected to the control panel 33. The code 37 is, as shown in FIG. 2 or 4,
After descending from the power supply trolley into the mast 13 on the left side and once reaching the inside of the traveling carriage 12, after passing through the cord guide groove 22,
It is exposed through the opening 36 and reaches the control panel 33.

[0012]

The present invention has the following effects due to the above-mentioned configuration. Only by mounting the wheel unit having the wheels and the sandwiching rollers at the set position of the traveling carriage, that is, since it is not necessary to adjust the relative positional relationship between the wheels and the sandwiching rollers when mounting the traveling carriage, the wheels and the sandwiching rollers are It can be installed more easily than in the past.

[Brief description of drawings]

FIG. 1 is a front view of essential parts showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a portion A of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an enlarged sectional view of part B of FIG.

5 is an enlarged cross-sectional view taken along line VV of FIG.

FIG. 6 is a perspective view of a wheel unit.

7 is an enlarged cross-sectional view taken along line VII-VII of FIG.

[Explanation of symbols]

 9 Guide Rail 11 Stacker Crane 12 Traveling Cart 16 Wheel Unit 18 Bracket 25 Wheel 27 Nip Roller

Claims (1)

[Claims] 1. Traveling along a guide rail having a bracket, a wheel provided on the bracket and mounted on a guide rail, and a pair of nipping rollers provided on the bracket for nipping the guide rail. Wheel unit of the dolly.