JP2020023264A - Conveyance trolley device - Google Patents

Abstract

To enable a to-be-conveyed object to be smoothly moved without being inclined in accordance with recesses and projections, inclinations, etc. of a conveyance surface on which the to-be-conveyed object is conveyed and also to make it possible to switch a conveyance height between two levels, one higher than the other.SOLUTION: A conveyance trolley device comprises: a trolley body 1 rotatably supporting rollers 2; a bridge 10 having slide leg parts 12 which are connected to left and right parts of a cover 11 covering an upper surface of the trolley body 1, and which are slidable in respective vertical directions of left and right side walls of the trolley body 1; a swing shaft 17 detachably/attachably inserted in the slide leg parts 12 of this bridge 10 and the left and right side walls of the trolley body 1; and a top plate 16 rotatably attached to an upper wall of the bridge 10. A reinforcement piece 13 for allowing the swing shaft 17 to be freely removably inserted is provided on a rear surface of the bridge 10. The left and right side walls of the trolley body 1 have a pair of guide projections 21 into which the slide leg parts 12 are slidably fitted.SELECTED DRAWING: Figure 1

Description

  The present invention is, for example, when installing or moving various equipment in various factories and the like that are bulky in weight, when transporting them, unevenness on the moving surface, without tilting the transported object corresponding to the inclination, etc. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport trolley device capable of moving an object in an inclined state and changing the height at the time of transport to two levels with a slight vertical interval.

  2. Description of the Related Art Conventionally, in order to transport and move various devices in various factories, for example, a bogie device having a plurality of wheels provided on a bogie body having a turntable (top plate) disposed on an upper surface is often used. For example, it is a transport caster disclosed in Patent Literature 1 and a trackless unmanned transport truck described in Patent Literature 2. In the transport caster according to Patent Document 1, a caster base provided with a turntable is provided with a front wheel portion provided with wheels as a swingable support, and the front wheel portion swings when there is unevenness on a running surface. This allows the caster base to run smoothly over this. The trackless automatic guided vehicle according to Patent Literature 2 is configured such that a wheel support arm provided with a driven wheel is swingably supported on the lower surface of a vehicle body, and the wheel support arm is vertically mounted on a road surface like a balance. By swinging, the vehicle can run in contact with the road surface.

Japanese Utility Model Laid-Open No. 6-45801 Japanese Utility Model Publication No. 8-228

  However, in such a conventional caster / dolly of this type, in which the wheel portion swings in accordance with the unevenness and inclination of the running surface to achieve smooth traveling, the caster body / dolly of the wheel portion is used. The swinging mechanism with respect to the main body is simply supported via a small-diameter / small-diameter support shaft so as to enable swinging. Therefore, for example, it is impossible to support the weight of various devices in order to incorporate it as a rocking mechanism for casters and bogies that support and move large devices in a factory that is bulky in terms of weight. Therefore, it may be damaged during use in traveling.

  In addition, in casters and trolleys, for example, in which a turntable is arranged on the caster and trolley bodies, the direction can be changed while supporting the various devices to be conveyed, but the turntables on the casters and trolleys slightly increase the various devices. Because it was supported in a state, it was not enough to ensure the safety of various devices during transport movement.

  Therefore, the present invention has been created in view of the above-described existing circumstances, and has as its object the purpose of swinging movement between a bogie main body and wheel portions when transporting and moving various bulky devices. It is possible to move and convey with good stability by making it possible to cope with swinging in response to unevenness, inclination, etc. on the conveying moving surface, and it is possible to change and adjust various equipment at the time of moving and conveying to, for example, two upper and lower height support positions, safely It is an object of the present invention to provide a transport trolley device that can be moved.

In order to solve the above-described problems, in the present invention, the left and right side walls of the bogie main body 1 are provided on the left and right sides of the bogie main body 1 on which the roller 2 is rotatably supported and the cover 11 covering the upper surface of the bogie main body 1. A bridge 10 having a series of slide leg pieces 12 slidable along the vertical direction, a swing leg 17 of the bridge 10, and a swing shaft 17 removably inserted into each of the left and right side walls of the bogie main body 1. , And a top plate 16 pivotally mounted on the upper side wall of the bridge 10.
On the back surface of the bridge 10, a reinforcing piece 13 through which the swing shaft 17 can be detachably inserted can be provided.
A pair of guide protrusions 21 into which the slide leg pieces 12 are slidably fitted can be provided on the left and right side walls of the carriage body 1.

In the transport trolley device according to the present invention configured as described above, the bridge 10 provided on the trolley main body 1 can swing freely between the trolley main body 1 and the trolley main body 1 by the oscillating shaft 17. Thus, for example, even if there are irregularities, inclinations, and the like on the running surface, the bogie main body 1 swings and the conveyed object P on the top plate 16 moves smoothly.
Further, the swinging shaft 17 inserted through the slide leg piece 12 of the bridge 10 is also inserted through the reinforcing piece 13 provided on the back surface of the bridge 10, so that the swinging movement of the bridge 10 and the bogie main body 1 is performed. Therefore, it is possible to withstand the load of the transported object P on the top plate 16 of the bridge 10 sufficiently.
Withdrawing the swing shaft 17 inserted through the carriage body 1 and the bridge 10 causes the carriage body 1 to directly support the cover 11 of the bridge 10 and lowers the support height of the conveyed object P supported by the top plate 16. .
The guide projections 21 provided on the left and right side walls of the bogie main body 1 guide and support the slide leg pieces 12 of the bridge 10 that descend when the swing shaft 17 is pulled out, for example, to shift the position of the bogie main body 1 in the front-rear direction. Do not cause.

  Since the present invention is configured as described above, the concavity and convexity of the conveyance surface and the like during conveyance of the conveyed object P by the oscillating connection structure of the carriage body 1 and the bridge 10 via the oscillating shaft 17 are reduced. Even if there is, the bogie main body 1 swings in response to irregularities or the like, thereby enabling smooth traveling. In addition, the lowering and lowering of the support height of the bridge 10 with respect to the bogie main body 1 by pulling out the swinging shaft 17 increases running stability, and in particular, allows the heavy and bulky goods P to move more safely.

  That is, according to the present invention, the trolley body 1 on which the rollers 2 are supported and the slide leg pieces 12 slidable on the left and right side walls of the trolley body 1 are connected to the left and right sides of the cover 11 covering the upper surface of the trolley body 1. The bridge 10, the slide leg portion 12, the swing shaft 17 removably inserted into each of the left and right side walls of the bogie body 1, and the top plate 16 rotatably mounted on the bridge 10 are provided. is there. Thus, it is possible to achieve running stability by swinging the bogie main body 1 corresponding to unevenness and the like during running, running safety by selecting and adjusting a supporting height by freely swinging shaft 17 being able to be pulled out, and the like.

  In addition, the bridge 10 itself is provided on the back surface of the bridge 10 with a reinforcing piece 13 through which the swinging shaft 17 is removably inserted. It is more securely connected to the main body 1, and can reliably support the load and the like of the transported object P placed on the top plate 16.

  When the supporting height of the conveyed object P is lowered by directly supporting the bridge 10 itself at the upper opening of the bogie main body 1 by extracting the swing shaft 17, a pair of guide protrusions is formed on the left and right side walls of the bogie main body 1. Since the portion 21 is provided, the slide leg piece 12 is fitted and guided when the bridge 10 slides vertically on the left and right side walls of the bogie main body 1. For this reason, the bridge 10 is supported at a predetermined position without causing a positional shift between the front and rear of the carriage main body 1, and can maintain the stability of connection with the carriage main body 1, and can be used when the transported object P is placed. The transported object P can be safely moved while maintaining the support stability when the transported object P is loaded, without causing the bridge 10 to be displaced or the like.

  In addition, the reference numerals added in each of the means for solving the above-described problem and the effect of the invention are given for easy reference to the parts indicating the respective components shown in the drawings. The present invention is not limited to the description, the structure, the shape, and the like indicated by reference numerals and the like in the drawings.

1 is a schematic perspective view showing one embodiment for carrying out the present invention. FIG. Similarly, in the front sectional view, a lowered state when the bridge is lowered is partially shown by a notch. It is a partially notched side view when the top plate is lowered. It is a side view at the time of moving and traveling similarly on an inclined surface. FIG.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the drawings is, for example, a bogie main body having a substantially rectangular shape when viewed from a plane, and the bogie main body 1 has a predetermined thickness. The front and rear side walls, the left and right side walls, etc. are integrally formed, and are formed in a substantially frame cylindrical shape in which the upper part of the central part and the entire lower part are open, and the front and rear parts are covered by a band-shaped upper side wall having a predetermined width. I have.

  The bogie main body 1 in the illustrated example has a total of four rollers 2 rotatably supported by a roller shaft 3 at a central portion along the front and rear, respectively, in the front and rear and left and right, so that the bogie main body 1 itself can move and travel. I have to.

  In addition, a connecting hole 5 for inserting and supporting a connecting bar is formed on an outer surface of the front and rear side walls of the bogie main body, for example, for connecting the present apparatus itself to another bogie or the like or for towing and moving the present apparatus itself. The connecting piece 4 is provided.

  A bridge 10 having a gate shape as viewed from the front, which is movable up and down, is provided at a central portion where the upper part of the bogie main body 1 is open. A slide leg piece 12 that slides up and down along the outer side surfaces of the left and right side walls of the bogie main body 1 is continuously provided on both sides of a cover 11 having, for example, a substantially square shape that covers the open portion, and faces the slide leg piece 12. An appropriate number of reinforcing pieces 13 are provided on the back surface of the cover 11. A top plate 16 is mounted on the cover 11 of the bridge 10 via a bearing shaft 15 so as to be rotatable on the upper surface of the cover 11.

  The bridge 10 is mounted on the bogie main body 1 by a swinging shaft 17 that is removably inserted into the sliding leg piece 12, the reinforcing piece 13, and the shaft holes 14 and 6 formed in the left and right side walls of the bogie main body 1. It is supported so that it can swing back and forth. That is, the bridge 10 supported by the bogie main body 1 by the swing shaft 17 swings back and forth around the swing shaft 17 so that the top plate 16 also swings back and forth, and is placed on the top plate 16. It is configured to swing back and forth between the placed object P and the carriage body 1 itself. The swing of the bridge 10 itself or the bogie main body 1 itself is performed by opening the shaft hole 14 at the lower side of the slide leg piece 12, so that the cover 11 or the top The plate 16 is set to be swingable in a predetermined allowable range, for example, in a range in which the inclination angle of the plate 16 is about 13 ° with respect to the running surface.

  When the swing shaft 17 is inserted into each of the shaft holes 14 and 6 so as to be able to swing with respect to the bogie main body 1 and to support the bridge 10 and the top plate 16, the swing shaft 17 itself moves from the bogie main body 1. Is prevented from being pulled out and fixed. For this purpose, a set screw 18 having a large-diameter head projecting from the outer peripheral surface of the swing shaft 17 is fixedly screwed to one end of the swing shaft 17, and the other end is fixed to one of the other ends. For example, a snap pin 19 is detachably inserted through a fastening hole formed in the hole.

  As shown in FIGS. 3 and 4, the swing shaft 17 is pulled out of the bogie main body 1, and the bridge 10 is slid downwardly of the bridge 10 so that the cover 11 is positioned at the central opening of the bogie main body 1. By doing so, the top plate 16 can be positioned at a low height. The sliding movement of the bridge 10 downward is performed by guiding the protrusions 21 projecting in pairs from the outer surfaces of the left and right side walls of the bogie main body 1 at intervals of the width of the slide leg pieces 12. The guides are fitted between each other so that the bridge 10 when it is lowered can be fitted exactly to the bogie main body 1 without shifting in the front-rear direction.

  When the bridge 10 is lowered, the inner protruding portions 12A of the slide leg pieces 12 connected to the left and right side edge portions of the bridge 10 form the left and right side walls of the open portion of the bogie main body 1 whose upper part is open. The lower bridge 10 is in contact with the upper edge (see the right part in FIG. 3) so that the lowered bridge 10 is firmly supported on the bogie main body 1 without rattling. Further, since the bridge 10 is supported by the upper edges of the left and right side walls via the inner protrusions 12A of the slide leg pieces 12, the lowered bridge 10 is prevented from contacting the roller 2. .

  An auxiliary roller 7 having a small diameter is supported on the front and rear portions of the bogie main body 1 at the same height as the supporting portion of the roller 2. When the traveling surface of the bogie main body 1 has irregularities, inclinations, and the like when the bogie main body 1 moves and travels, the auxiliary roller 7 first guides the vehicle to ride on these, so that the bogie main body 1 runs smoothly. (See FIG. 5).

  Next, an example of the use of this device will be described. For example, various devices to be conveyed are placed and moved, and as shown in FIG. 6, the devices are moved to the bottom surface of each of the four corners by pulling and towing. In this case, the carriage main bodies 1 may be connected to each other in some cases.

  In order to lower the support height of the transported object P, as shown in FIG. 4, the swing shaft 17 is extracted from the bogie main body 1 and the bridge 10, and the slide leg piece 12 is fitted between the guide projections 21. It is only necessary to position the bridge 10 at the upper open portion of the bogie main body 1, and the supporting height of the conveyed object P is changed and adjusted by selecting one of two upper and lower positions by inserting and removing the swing shaft 17. is there.

P ... Conveyed object 1 ... Carriage body 2 ... Roller 3 ... Roller shaft 4 ... Linking piece 5 ... Linking hole 6 ... Shaft hole 7 ... Auxiliary roller 10 ... Bridge 11 ... Cover 12 ... Slide leg piece 12A ... Inner protrusion 13 ... Reinforcing piece 14 ... Shaft hole 15 ... Bearing shaft 16 ... Top plate 17 ... Swinging shaft 18 ... Set screw 19 ... Snap pin 21 ... Guide protrusion

Claims (3)

  A bogie body in which rollers are rotatably supported, and a bridge in which left and right sides of a cover covering an upper surface of the bogie body are provided with slide leg pieces that are slidable along a vertical direction of left and right side walls of the bogie body. A transport trolley device comprising: a swinging shaft detachably inserted into each of a slide leg piece of a bridge, left and right side walls of a bogie main body, and a top plate pivotally mounted on an upper side wall of the bridge.   The transporting trolley device according to claim 1, wherein a reinforcing piece for detachably inserting the swing shaft is provided on the back surface of the bridge.   3. The transport trolley device according to claim 1, wherein a pair of guide protrusions for slidably fitting the slide leg pieces are provided on the left and right side walls of the trolley body.

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