JP2010089903A - Carrier having tilt hanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrier having a tilt hanger capable of inclining the hanger placed with a carrying object by a relatively small force when carrying the carrying object along a carrier rail. <P>SOLUTION: The carrier 1 has a trolley 2 traveling along the carrier rail R, the hanger 4 installed in the trolley 2 and having a substantially circular arc-shaped rotation guide 4a and a support 4b for supporting the carrying object P, and a rotational driving machine 5 for rotating the hanger 4 with a circular arc central point of the rotation guide 4a as a rotational center C, and has the tilt hanger for arranging a position adjusting means 6 in the support 4b for making the center of gravity G of the carrying object P approximate to the rotational center C of the rotation guide 4a. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a transport vehicle provided with a tilt hanger that transports an article along a rail, and more specifically, the tilt of the article to be transported can be easily changed, and the transport vehicle is transported as a lightweight one. The present invention relates to a transport vehicle including a tilt hanger capable of improving the durability of the apparatus and further reducing the manufacturing cost.

2. Description of the Related Art Conventionally, in manufacturing sites for industrial products such as automobiles, a method for efficiently manufacturing industrial products by transporting articles (car bodies, etc.) along a certain transport line by a transport device and sequentially performing each process.
Moreover, in such a manufacturing site, since the parts of articles to be worked are different in each process, a transport vehicle that can tilt the goods being transported so that an operator can easily work in each process is provided. In some cases, a different transport device is used.

  As the thing which can incline the conveyed product currently conveyed by the trolley conveyor, it is primary to the said trolley of the trolley conveyor which consists of the chain guided to the 1st rail, and the trolley which is guided to the 2nd rail and advances by the said chain. In a trolley conveyor swivel device in which a hanger is provided and a secondary hanger is provided on the primary hanger so as to be pivotable in a direction transverse to the traveling direction, an arm having a forward rotation cam roller and a reverse rotation cam roller is pivotally supported on the primary hanger. A forward cam path is arranged for the forward cam roller and a reverse cam path is engaged with the reverse cam roller at a set position in the moving direction of the conveyor. The swivel movement of the arm caused by engaging with the cam passage is a secondary hanger via a known transmission mechanism. There is a trolley conveyor, characterized in that it is constructed as being transmitted to the arch portion (e.g., Patent Document 1).

  With the configuration described in Patent Document 1, the worker can work from the side in a standing posture with respect to the articles mounted on the conveyor, the work is easy, and there is a risk that the parts may fall. In addition, since the forward rotation and reverse rotation cams are provided on the upper side of the hanger, there is no danger of workers hitting them, and their installation does not deteriorate the work environment.

  Here, since the thing of patent document 1 is what supports a conveyed product on the hanger of a fixed shape, and conveys what differs in size according to a kind, for example, a car, a car of a size within a fixed range is used. It is necessary to provide a hanger with sufficient spacing in both the height direction and the width direction for transport. However, if a general or relatively small size automobile is placed on a hanger that is higher than necessary, the center of gravity of the automobile and the hanger will be located below the center of rotation of the hanger. Since a large driving force is required to rotate the hanger, the rotational driving machine inevitably becomes heavy. If the transport vehicle becomes heavier, the manufacturing cost of the entire transport device is increased and the durability is also deteriorated. In addition, when a lifting member that can move the hanger up and down is provided on the weighted transport vehicle, it is necessary to use a lifting member that has a higher swing prevention function in consideration of inertial force and the like generated during transportation. .

Japanese Patent Publication No. 56-51965

  Therefore, the present invention intends to solve a transport vehicle equipped with a tilt hanger that can tilt a hanger on which a transported object is placed with a relatively small force when transporting a transported object along a rail. The point is to provide.

  In order to solve the above-described problems, a transport vehicle equipped with a tilt hanger according to the present invention includes a trolley that travels along a transport rail, a trolley that is attached to the trolley, a substantially arc-shaped rotation guide portion, and a transport object. A hanger having a support part to support, and a rotation driving device for rotating the hanger around a circular arc center point of the rotation guide part, and the rotation guide part provides a center of gravity of the transported object to the support part. It is characterized in that it is provided with a position adjusting means for bringing it closer to the center of rotation.

  Here, it is preferable that the hanger is attached to the trolley via an elevating member that allows the hanger to move up and down with respect to the trolley.

  Moreover, it is preferable that the rotary drive machine includes a cylindrical rotary roller that is in pressure contact with the rotary guide portion.

  Furthermore, the position adjusting means is inserted into the through-holes of the vertical axis provided at both ends of the hanger and is attached to the liftable state, and the fixing holes provided substantially horizontally at both ends of the attach and the hanger. It is preferable that a fixing pin to be inserted is provided.

  According to the conveyance vehicle provided with the tilt hanger according to the first aspect, the hanger on which the conveyance object is placed can be rotated even with a small rotational driving force. Further, the work position can be fixed without the relative position of the load with the trolley being greatly displaced even by rotation of the hanger.

  Further, according to the hanger attached to the trolley via an elevating member that allows the hanger to move up and down with respect to the trolley, in addition to the above effects, the rotary drive device is lightweight. Also, the elevating member and the elevating drive device that support the elevating member can be reduced in weight. As a result, the weight of the entire transport vehicle can be reduced, so that the durability of the transport device can be improved and the manufacturing cost can be reduced.

  Further, according to the rotary drive machine provided with a cylindrical rotary roller that is in pressure contact with the rotary guide portion, it can be advantageous in terms of noise and manufacturing cost. In addition, there is less rotational vibration than a driving means such as a gear, and it can act smoothly.

  Still further, the position adjusting means is inserted through the through-holes of the vertical axis provided at both ends of the hanger and is capable of moving up and down, and the fixing holes provided substantially horizontally at both ends of the attach and the hanger According to the present invention, it is possible to adjust and fix the position by a simple method, and to reduce the weight of the transport vehicle.

  Next, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all the embodiments that satisfy the requirements described in the claims. . In the description of this embodiment, it is assumed that the traveling direction A of the transport vehicle 1 shown in FIG.

  1 to 6 are explanatory views showing a configuration of a transport vehicle including a tilt hanger according to the present embodiment. FIG. 1 is a front view of the transport vehicle including the tilt hanger according to the present embodiment. FIG. FIG. 3 is a partial enlarged view showing the configuration of the position adjusting means according to this embodiment, (a) is a front view showing a state before position adjustment, and (b) is a front view showing a state after position adjustment. 4 is a partially enlarged view showing a state (before position adjustment) in which a conveyed product is placed, FIG. 5 is a partially enlarged view showing a state in which the position of the conveyed product is adjusted, and FIG. 6 shows an inclined state of the conveyed product. It is a front view. In the figure, reference numeral 1 denotes a transport vehicle, 2 denotes a trolley, 3 denotes an elevating member, 4 denotes a hanger, and 5 denotes a rotary drive machine.

  A configuration of the transport vehicle 1 including the tilt hanger according to the present embodiment illustrated in FIGS. 1 and 2 will be described.

  The transport rail R is formed of cross-sectional I-shaped steel, and is provided by connecting each work place. The transport vehicle 1 travels along the transport rail P and transports the transported object P placed thereon.

  The transport vehicle 1 is attached to the trolley 2 that travels along the transport rail R, an elevating member 3 suspended downward by the trolley 2, and can be moved up and down via the elevating member 3. The rotation guide part 4a and the hanger 4 having a support part 4b for supporting the conveyed product P are provided. In addition, a rotary drive 5 that rotates the hanger 4 is provided below the elevating member 3, and the hanger 4 is rotatable about the traveling direction axis of the transport vehicle 1.

  The trolley 2 includes a transport roller 2a that is rotated on the transport rail R by a drive device 8 provided alongside, and guide rollers 2b, 2b, 2b, and 2b that are in pressure contact with both side surfaces of the transport rail R. Along the way. In addition, a hanger 4 for placing the conveyed product P is attached to the trolley 2 by an elevating member 3 so as to be movable up and down with respect to the trolley 2. Two pairs of trolleys 2 and 2 connected by the connecting member are arranged in a total of two sets on the front side and the rear side of the transport vehicle 1, respectively, and a drive device 8 is provided on the trolley 2 arranged on the rear side. ing.

The elevating member 3 is suspended by four trolleys 2, 2, 2, and 2, and a hanger 4 on which the conveyed product P is placed is attached to the lower end. The elevating member 3 is configured by connecting an upper frame 3a and a lower frame 3d by an upper swing preventing member 3b and a lower swing preventing member 3c.
The upper rocking prevention member 3b and the lower rocking prevention member 3c are configured to be able to rotate only in one direction at the intermediate connection portion and the upper and lower frame connection portions, thereby moving in the other direction in the horizontal direction. The swing of the hanger 4 can be prevented. A total of four upper swing prevention members 3b and lower swing prevention members 3c are arranged so as to prevent swinging in the advancing direction and the left-right direction, and swinging of the hanger 4 in the front-rear and left-right directions can be prevented. It is supposed to be.
Moreover, in the conveyance vehicle 1 provided with this raising / lowering member 3, the hanger 4 can be raised by hoisting the raising / lowering belt 3e with the hoisting machine 3f, and conversely, the hanger 4 is lowered | hung by paying out the raising / lowering belt 3e. be able to. Even during this up-and-down movement and after the up-and-down movement, due to the above-described action, the swing of the hanger 4 in the front-rear and left-right directions can be restricted and the conveyed product P can be stably conveyed.

The hanger 4 includes a substantially C-shaped rotation guide portion 4a and support portions 4b located at both ends, and an upper guide roller 9a and a lower side provided on a hanger attachment portion 9 fixed to the lower end of the elevating member 3. It is rotatably supported by a guide roller 9b. The rotation guide portion 4a engaged with the upper guide roller 9a and the lower guide roller 9b has an arc shape, so that the rotation of the rotation roller 5a of the rotary drive machine 5 is smoothly transmitted to the hanger 4, and the support portion 4b. It is possible to smoothly incline the conveyed product P supported by the above in a plane perpendicular to the conveying direction.
Position adjustment means 6 is provided in the support part 4b, and the center of gravity G of the transported article P placed by the position adjusting means is brought closer to the rotation center C of the hanger 4 so that the transported object is inclined. By bringing the center of gravity G of the conveyed product P closer to the rotation center C of the hanger 4, the hanger 4 can be rotated with a relatively small force, and the rotary drive 5 of the hanger 4 can be made simple and lightweight.
Further, since the center of gravity of the hanger 4 is positioned in the vicinity of the rotation center C of the hanger 4, the center of gravity of the hanger 4 and the transported object P is brought to the hanger 4 by bringing the center of gravity G of the transported object P closer to the rotation center C of the hanger 4. The position of the conveyed product P for reducing the force required for the rotation of the hanger 4 can be easily adjusted, but this configuration is not adopted, and the rotation guide portion 4a and the support portion 4b are provided. Any other configuration may be used.

  The rotation drive machine 5 rotates the hanger 4 by rotating the rotating roller 5a pressed against the hanger 4 by the motor 5b. At this time, the center of gravity G of the transported object P is located near the rotation center C of the hanger, so that the center of gravity of the hanger 4 and the transported object P is positioned in the vicinity of the rotation center C of the hanger 4 and the hanger 4 is rotated. The rotational force required for the rotary drive machine 5 is relatively small.

  As shown in FIG. 3, the position adjusting means 6 is provided with a fixing pin 6b that is urged by a spring 6c that inserts the attachment 6a into through holes provided at both ends of the hanger 4 and fixes the attachment 6a and the hanger. Become. On the upper end of the attach 6a, a placement unit for placing the conveyed product P is provided. This mounting part is provided with a slip stopper so that the transported article P does not fall down when the hanger 4 is tilted, but it can be simply fixed, and the transported article P is fixed to the hanger 4 and transported. Also good.

  Further, the transport operation (travel of the transport vehicle 1, lifting and lowering of the lifting member 3, and rotation of the hanger) of the transport vehicle 1 including the tilt hanger according to the embodiment is controlled by the control panel 7 provided in the lifting member 3. .

  Hereinafter, the transport operation of the transport vehicle 1 including the tilt hanger according to the present embodiment will be described with reference to FIGS.

First, as shown in FIG. 4, in order to place the conveyed product P, the height of the hanger 4 is set to a predetermined placement height by the elevating member 3, the hanger 4 is not rotated, and the opening is positioned directly below. In this state, the attachment 6a of the hanger 4 is positioned so that the protrusion to the inside of the hanger 4 is minimized, and the conveyed product P is placed thereon. Thereby, when loading, there is a sufficient margin between the hanger 4 and the conveyed product P, and it can be loaded safely.
Next, the position of the conveyed product P is adjusted as shown in FIG. The attachment 6a is pushed up to a predetermined height by an external device (not shown) in which the attachment 6a at the lowest position is installed on the ground side. With the center of gravity G of the conveyed product P approaching the rotation center C of the hanger 4, the fixing pin 6 b is inserted into the through hole provided in the hanger 4 and the attachment 6 a to fix the attachment 6 a to the hanger 4.
By this position adjustment, the center of gravity G of the conveyed product P approaches the rotation center C of the hanger 4, and the force required to tilt the conveyed product P can be reduced.
Moreover, since the attachment 6a is configured to be easily removed, when the transported object is changed, it can be dealt with at any time by replacing it with the attach 6a that can be adjusted to the height matched to the transported object.

  When working on the lower surface of the conveyed product P and its vicinity during conveyance, as shown in FIG. 6, the hanger 4 is rotated by a predetermined angle by the rotary drive 5 as necessary, and the conveyed product P is moved around the axis in the traveling direction. Tilt. Since the transported object P is placed on the hanger 4 and adjusted in position by raising and lowering the attachment 6a, the center of gravity G of the transported object is positioned and supported near the rotation center C of the hanger. The force required to rotate the hanger, which is proportional to the distance to the rotation center C, can be reduced.

In this embodiment, the hanger is suspended on the trolley via the lifting member, but regardless of this configuration, the trolley provided with the hanger may be a transport device that travels along the transport rail. The hanger supported directly above the trolley traveling on the transport rail may be provided with a position adjusting means.
In addition, although the rotary drive machine is configured to rotate the hanger by a friction roller that can rotate the hanger by press-contacting, other configurations such as a configuration using a gear or the like may be used.
In addition, the attachment is detachable and has a fixed through-hole. However, the attachment may be non-removable, and the height can be adjusted step by step according to the size of the transported object. It may be one that can be simply fixed.
Furthermore, the position adjustment means may be used in combination with a device that automatically determines the center of gravity G of the conveyed object to adjust the position of the conveyed object.

It is a front view of the conveyance vehicle provided with the tilt hanger which concerns on this embodiment. It is a right view of the conveyance vehicle provided with the tilt hanger which concerns on this embodiment. It is the elements on larger scale which show the structure of the position adjustment means which concerns on this embodiment, (a) is a front view which shows the state before position adjustment, (b) is a front view which shows the state after position adjustment. It is the elements on larger scale which show the state (before position adjustment) in which the conveyed product P of the conveyance vehicle provided with the tilt hanger which concerns on this embodiment was mounted. It is the elements on larger scale which show the state which performed the position adjustment of the conveyed product of the conveyance vehicle provided with the tilt hanger which concerns on this embodiment. It is a front view which shows the conveyed product inclination state of the conveyance vehicle provided with the tilt hanger which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance vehicle 2 Trolley 2a Conveyance roller 2b Guide roller 3 Lifting member 3a Upper frame 3b Upper rocking prevention member 3c Lower rocking prevention member 3d Lower frame 3e Lifting belt 3f Hoisting machine 4 Hanger 4a Rotation guide part 4b Support part 5 Rotation Driving machine 5a Rotating roller 5b Motor 6 Position adjusting means 6a Attaching 6b Fixing pin 6c Spring 7 Control panel 8 Driving device 9 Hanger mounting portion 9a Upper guide roller 9b Lower guide roller A Traveling direction C Rotation center G Center of gravity P Conveyance R transport rail

Claims (4)

A trolley that runs along the transport rail;
A hanger attached to the trolley and having a substantially arcuate rotation guide part and a support part for supporting a conveyed product,
A rotation drive machine that rotates the hanger around the arc center point of the rotation guide portion as a rotation center;
A transport vehicle equipped with a tilt hanger, wherein the support portion is provided with position adjusting means for bringing the center of gravity of the transported object closer to the rotation center of the rotation guide portion.   The conveyance vehicle provided with the tilt hanger according to claim 1, wherein the hanger is attached to the trolley via an elevating member that allows the hanger to move up and down with respect to the trolley.   The conveyance vehicle provided with the tilt hanger of Claim 1 or 2 with which the said rotation drive machine is provided with the cylindrical rotation roller which press-contacts to the said rotation guide part. The position adjusting means is inserted into through-holes in the vertical axis provided at both ends of the hanger so as to be movable up and down, and is inserted into fixing holes provided substantially horizontally at both ends of the attach and the hanger. The conveyance vehicle provided with the tilt hanger of any one of Claims 1-3 provided with the fixed pin to perform.

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