JPH05270398A - Suspension conveying device - Google Patents

Abstract

PURPOSE:To increase a service life by preventing an unreasonable force in a lateral direction from being exerted on a suspension coupling part between a trolley and a hanger which supports a substance to be conveyed suspended from the trolley. CONSTITUTION:Bearing parts 5 and 6 extended in a cantilever-form state to a position right below a guide rail 1 are arranged on the lower end parts of a self-running trolley 2 and a follower trolley 3. Hanger suspension members 7 and 8 in the shape of a gantry as seen from a side positioned astride the bearings 5 and 6 in a manner to nip the bearings 5 and 6, respectively, between a front and a rear are horizontally rotatably mounted on the bearing parts 5 and 6 through vertical support axles 9 and 10, respectively. Bearing parts 11a and 12a arranged in the central position in the direction of a lateral width of a hanger 4 for suspending a substance to be conveyed are engaged with and between a pair of the front and rear legs of the hanger suspension members 7 and 8, respectively. The bearing parts are rockably mounted through longitudinal horizontal support axles 13 and 14 situated right below the guide rail 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monorail type hanging and conveying apparatus in which a hanger for supporting an object to be conveyed is suspended by a self-propelled trolley and a driven trolley that are movably supported by one guide rail. It is a thing.

[0002]

2. Description of the Related Art In the conventional suspension conveying apparatus of this type, a bearing portion extending cantilevered just below the guide rails is formed at the lower end portions of the trolleys, and the bearing portions are formed in the bearing portions. A hanger suspension member having an inverted L-shaped front shape pivotally rotatably supported by a vertical support shaft is fixed to the hanger for suspending an object to be transported.

Therefore, in the path portion where the guide rail curves horizontally, the hanger suspension member horizontally rotates around the vertical support shaft for each trolley, so that each trolley interferes with the guide rail that curves horizontally. However, since the hanger for suspending the transported object cannot move to the left and right with respect to each trolley, it may be subjected to centrifugal force in the horizontal curve path part or the accuracy of the guide rail installation. When the guide rail is inclined laterally in the left-right direction due to a bad condition, etc., the hanger suspension member and the hanger suspension member are connected to each other by the rotational force in the left-right lateral direction acting on the hanger. There is a possibility that stress concentration may occur at the bent portion of the above or a vertical support shaft that pivotally connects the hanger suspension member and the trolley-side bearing portion, resulting in shortened service life.

[0004]

In order to solve the above-mentioned conventional problems, the hanger suspension member pivotally supported by each trolley is not fixed to the hanger, but is pivoted by a front-rear horizontal support shaft. The present invention has been made from such a viewpoint, and the features of the present invention will be described with reference numerals of the embodiments described later. A hang-up carrier device comprising a self-propelled trolley 2 movably supported by one guide rail 1 and a driven trolley 3 for suspending a hanger 4 for supporting an object to be transported. Bearing portions 5 and 6 extending in a cantilever shape directly below the guide rail 1 are formed at the lower end portion of the guide rail 1, and side surfaces extending across the bearing portions 5 and 6 so as to sandwich the bearing portions 5 and 6 from the front and rear. Hanger suspension member 7 with a gate shape
8 is rotatably and horizontally pivotally attached to the bearings 5 and 6 by vertical support shafts 9 and 10, and these hanger suspension members 7 and 8
Between the pair of front and rear leg portions 7a, 7b and 8a, 8b, the bearing portions 11a, 12a provided at the center position in the left-right width direction of the hanger 4 for suspending the transported object are fitted, and both are guided by the guide rail. Front and rear horizontal support shaft 1 located directly below 1
It is characterized in that it is pivotally attached by means of 3, 14.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the accompanying drawings. In FIG. 1, reference numeral 1 is a guide rail, and a cross section I having rail portions 15 and 16 at both upper and lower ends.
It is of a shape. Reference numeral 2 denotes a self-propelled trolley, which is a drive wheel 1 that rides on the upper surface of the upper rail portion 15 of the guide rail 1.
7, a vertical shaft roller 18 for steadying, which sandwiches the upper and lower rail portions 15 and 16 of the guide rail 1 from both left and right sides, and a motor 20 for driving the drive wheels 17 via a speed reducer 19. A bearing portion 5 is formed so as to extend cantilevered to a position directly below the guide rail 1.

Reference numeral 3 denotes a driven trolley, which is an idle wheel 21 on the upper surface of the upper rail portion 15 of the guide rail 1.
And a vertical shaft roller 22 for steadying that sandwiches the upper and lower rail portions 15 and 16 of the guide rail 1 from both left and right sides,
At the lower end of the trolley, there is formed a bearing portion 6 that extends cantilevered to a position directly below the guide rail 1.

Reference numeral 4 denotes a hanger for supporting an object to be transported. A pair of left and right hanger arms 24 that can be freely opened and closed are pivotally supported at the front and rear ends of a hanging frame 23, and the lower end supporting portions of these four hanger arms 24 are supported. Supports objects to be transported such as automobile bodies. The suspension frame 23 is provided with connecting members 11 and 12 extending in the left-right width direction at positions near both front and rear ends, and a bearing portion 11a having a bearing hole in the front-rear direction at the central position of the connecting members 11 and 12. , 12a are formed.

Reference numerals 7 and 8 denote hanger suspension members having a gate-shaped side surface. As shown in detail in FIGS. 2 to 4, the bearing portions 5 and 6 of the trolleys 2 and 3 are sandwiched from the front and rear. Thus, in a state of straddling the bearing portions 5 and 6, the bearing portions 5 and 6 are pivotally attached to the bearing portions 5 and 6 so as to be horizontally rotatable by the vertical support shafts 9 and 10. Then, the bearing portions 11a and 12a of the hanger 4 are fitted between the pair of front and rear leg portions 7a and 7b of the hanger suspension members 7 and 8 and between the pair of front and rear leg portions 7a and 7b, respectively, and both of them are arranged in the front-rear direction horizontal support shaft 13 , 14 are pivotally attached so that they can swing right and left. The upper ends of the vertical support shafts 9 and 10 are cantilevered below the guide rails 1 for pivotally supporting the steady rest vertical shaft rollers 18 and 22 below the trolleys 2 and 3, respectively. Although it is supported by the roller bearings 25 and 26, the upper end support structure of the vertical support shafts 9 and 10 with respect to the roller bearings 25 and 26 is not essential to the present invention.

The suspension transport apparatus constructed as described above is
By rotating the drive wheels 17 of the self-propelled trolley 2 by the motor 20, the self-propelled trolley 2 can be self-propelled along the guide rail 1, and the transported object such as an automobile body supported by the transported object hanging hanger 4 is supported. Can be transported. Thus, as shown in FIG. 4, the self-propelled trolley 2 and the driven trolley 3 are horizontally rotated around the vertical support shafts 9 and 10 with respect to the hanger 4 suspended via the hanger suspension members 7 and 8. Since it is possible, even in the route portion where the guide rail 1 curves horizontally, the trolleys 2 and 3 with respect to the hanger 4 can travel smoothly with horizontal rotation.

The hanger 4 is composed of two trolleys 2, 3
With respect to the front-rear horizontal support shafts 13 and 14 (of course, both support shafts 1
(3 and 14 are in concentric positions) can be rocked to the left and right, so when it is necessary to prevent the hanger 4 from rocking to the left or right when loading or unloading the transported object, the hanger 4 was installed at that location. The guide rail and the guide roller provided on the hanger 4 allow the hanger 4 to move, but can also prevent the hanger 4 from swinging left and right.

[0011]

According to the suspending and conveying apparatus of the present invention which can be implemented as described above, the hanger suspending member pivotally attached to the lower end of the trolley by the vertical support shaft is not fixed to the hanger, Since it is pivotally attached to the left and right around a horizontal support shaft in the front-rear direction, the guide rail tilts in the left and right lateral directions when centrifugal force is applied in the horizontal curve path or the guide rail installation accuracy is poor. Even when
The left and right lateral rotation force acting on the hanger can be absorbed by the left and right lateral swing motion of the hanger,
As in the prior art, stress concentration is concentrated on the connecting portion of the hanger suspension member and the hanger, the bent portion of the hanger suspension member, or the vertical support shaft pivotally connecting the hanger suspension member and the trolley side bearing portion. As a result, the service life will not be shortened and a damage accident will not occur.

In addition, the hanger suspension member has a side-shape of a gantry shape so as to straddle the bearing portion on the trolley side, and the bearing portion on the hanger side is arranged in the front-rear direction between a pair of legs located immediately below and below the guide rail. Since it is pivotally attached by a horizontal support shaft,
Compared with the conventional inverted L-shaped hanger suspension member, it not only increases the strength of the hanger suspension member itself, but also arranges the front-rear horizontal support shaft directly below the guide rail (just below the vertical support shaft). You can hang the hanger in good balance.

[Brief description of drawings]

1 is a partially cutaway side view, and FIG. 1B is a vertical sectional front view.

FIG. 2 is an enlarged partial vertical cross-sectional side view of a hanger suspension portion.

FIG. 3 is an enlarged front view of a hanger hanging portion.

FIG. 4 is a cross-sectional plan view showing a hanger suspension portion of both trolleys.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Guide rail 2 ... Self-propelled trolley 3 ... Followed trolley 4 ... Hanger for suspending a to-be-conveyed object 5, 6 ... Bearing part on the trolley side 7, 8 ... Hanger suspension member 9, 10 ... Vertical support shafts 11a, 12a ... Bearings on hanger side 13, 14 ... Horizontal support shaft in front-rear direction

Claims (1)

[Claims] 1. A suspending and conveying device comprising a self-propelled trolley movably supported by one guide rail and a driven trolley for suspending a hanger for supporting an object to be conveyed, the lower end portions of the both trolleys. A bearing portion extending cantilevered directly below the guide rail is formed on the hanger suspension member having a gate-shaped side surface straddling the bearing portion so as to sandwich the bearing portion from the front and rear. A bearing portion pivotally attached to a bearing portion so as to be horizontally rotatable by a vertical support shaft and provided between the pair of front and rear legs of each of the hanger suspension members at the center position in the width direction of the hanger for suspending the transported object. And a both sides of the guide rail are pivotably attached to each other by a front-rear horizontal support shaft located directly below the guide rail.