JP2006027527A - Conveying carriage and conveying system using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveying carriage capable of conveying an article by a roller conveyor without using a pallet. <P>SOLUTION: This conveying carriage 10 used to convey the article is furnished with a conveying carriage body 11 to house the article and wheels 12 respectively provided in the front and the rear on its bottom. The wheels 12 have wheel position change-over means 18, 20 to change an exposed position exposed to project from a lower end of the conveying carriage body 11 and a stored position stored not to project from the lower end of the conveying carriage body 11 to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a transport cart used for transporting articles and a transport system using the transport cart.

  In factories and the like, a transport cart is widely used to transport parts and products. In general, such a transport carriage has a structure in which casters for movement are attached to the four corners of the bottom of the transport base body for storing articles.

In Patent Document 1, there are four columns each having a caster attached to the lower end thereof, and a Z-shape with column insertion pipes fixed on both front and rear sides so as to be positioned at the lower and upper parts of the four columns. Two inverted Z-shaped fixed frames, a plurality of tracer elves and pipe spacers inserted in the columns so as to be sequentially positioned between the two side portions of the two fixed frames, and both side portions of the four columns An upper tray elbow inserted in the upper part, two fixing frames always attached to the upper part of the four pillars, a plurality of tracer elves and pipe spacers, and a fixing tool for pressing and fixing the upper tray shielf , A tray rack composed of trays supported by opposing tray shelves is disclosed. And according to this, it is described that nesting is possible, sufficient strength can be obtained, and light weight can be produced.
Japanese Patent Laid-Open No. 9-2221038

  By the way, when an article is placed on a transport carriage and transported as it is by a roller conveyor, there is a disadvantage that a caster is fitted between the rollers when the transport carriage is placed directly on the roller conveyor. Therefore, normally, as shown in FIG. 7, the transport cart 30 is temporarily placed on the pallet 33 while the casters 32 are left as they are, and is transported by the roller conveyor 31.

  This invention is made | formed in view of this point, The place made into the objective provides the conveyance trolley | bogie which can be conveyed with a roller conveyor, without using a pallet, and a conveyance system using the same. There is.

The transport carriage of the present invention that achieves the above object is used for transporting articles,
A carrier base for storing articles, and wheels provided on the front and rear of the bottom of the carrier base, respectively,
The wheel is provided with wheel position switching means for switching between an exposure position exposed so as to protrude from the lower end of the transport base body and a storage position stored so as not to protrude from the lower end of the transport base body.

  According to said structure, a floor can be moved by making the wheel into the exposed state, On the other hand, it can carry on a roller conveyor as it is by making the wheel into the stored state. Therefore, it is possible to carry on the roller conveyor only by the transport carriage without using a pallet.

  In the transport carriage of the present invention, the front wheel is provided behind the front end of the transport base body, and / or the rear wheel is provided forward of the rear end of the transport base body. It is preferable.

  According to said structure, when mounting a conveyance trolley on a roller conveyor, a wheel can be stored in the state which mounted and supported the front part on the roller conveyor from the wheel of the front side in a conveyance pedestal body. When unloading from the roller conveyor, the wheel can be exposed with the rear part of the carrier table mounted on the roller conveyor and supported from the rear wheel. It is possible to easily perform the work of exposing the.

  The conveyance cart of the present invention can constitute a conveyance system by combining with a roller conveyor.

  In such a transport system, the transport carriage of the present invention is formed such that the lower end position of the transport base body is positioned at the same height as the transport surface position of the roller conveyor in a state where the wheel is in the exposed position. It is preferable that

  According to said structure, while not having to lift a conveyance trolley and placing it on a roller conveyor, workability | operativity including taking in / out of a wheel becomes favorable, and conveyance of articles | goods can be performed smoothly.

  As described above, according to the present invention, since the wheel can be taken in and out, it is possible to carry by the roller conveyor only by the conveyance carriage without using the pallet.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 and 2 show a transport carriage 10 according to the present invention.

  The transport carriage 10 includes a transport base body 11 for storing articles, and a total of four wheels 12 provided on both sides of the bottom of the transport base body 11.

  The transport table body 11 is formed in a rectangular box shape opened upward. Further, the transport table main body 11 is provided with an elongated rectangular bottom plate 11a in front and rear of the box-shaped portion that is continuously below both sides of the box-like portion and is lowered below the bottom. The bottom plate 11a has a lower end serving as a lower end of the transport base body 11, and forms a space under the box-shaped portion.

  The wheel 12 is attached to the four corners of the bottom of the carriage main body 11 as a wheel unit 14 that is pivotally supported by an axle 15 that connects the mutually opposed surfaces of a U-shaped wheel holder 13 having a U-shaped cross section. Each of the pair of front wheel units 14 is provided slightly behind the front end of the transport table body 11. Further, each of the pair of wheel units 14 on the rear side is provided slightly forward from the rear end of the transport base body 11.

  3 and 4 show the wheel unit 14 attached to the bottom of the transport table main body 11.

  Each front wheel unit 14 is formed with a cylindrical shaft insertion portion at the rear end of the upper surface of the wheel holder 13 so as to extend in parallel with the axle 15. Further, in each wheel unit 14 on the front side, both ends of the mounting shaft 16 inserted through the shaft insertion portion are fixed to the bottom of the transport base body 11 so that the axle 15 extends in the left-right direction. Further, each front wheel unit 14 has the front end of the upper surface of the wheel holder 13 locked by a fixing bracket 17 provided on the bottom of the transport table body 11, so that the wheel 12 is suspended as shown in FIG. The plate 11 a is positioned at an exposed position so as to protrude from the lower end of the plate 11 a, that is, the lower end of the transport base body 11.

  Similarly, each wheel unit 14 on the rear side has a cylindrical shaft insertion portion formed at the front end of the upper surface of the wheel holder 13 so as to extend in parallel with the axle 15. Further, in each wheel unit 14 on the rear side, both ends of the mounting shaft 16 inserted through the shaft insertion portion are fixed to the bottom of the transport base body 11 so that the axle 15 extends in the left-right direction. Further, each wheel unit 14 on the rear side has the rear end of the upper surface of the wheel holder 13 locked by a fixing bracket 17 provided on the bottom of the carriage base body 11, so that the wheel 12 has a lower end of the hanging plate 11a, That is, it is in a state of being positioned at an exposed position so as to protrude from the lower end of the transport table main body 11.

  On the other hand, an engagement release lever 18 is provided corresponding to each of the pair of wheel units 14 on the front side and the rear side so as to be supported by the hanging plates 11a on both sides, and by operating the engagement release lever 18 The engagement of the front pair of wheel units 14 or the pair of rear wheel units 14 by the fixing bracket 17 is released. Each of the wheel units 14 on the front side and the rear side is provided with a coil spring 19 so as to connect the side surface of the wheel holder 13 and the position on the inner side of the bottom of the transport table main body 11. When the engagement by the fixing bracket 17 is released, as shown in FIG. 4, the coil 12 is tilted inward by the bias of the coil spring 19, and the wheel 12 protrudes from the lower end of the hanging plate 11 a, that is, the lower end of the transport base body 11. Without being, it will be in the state located in the storage position stored in the space under the box-shaped part of conveyance stand main part 11.

  Further, an engagement set lever 20 is provided corresponding to each of the pair of wheel units 14 on the front side and the rear side so as to be supported by the hanging plates 11a on both sides, and by operating the engagement set lever 20 The pair of wheel units 14 on the front side or the pair of wheel units 14 on the rear side stand against the bias of the coil spring 19, and the fixing bracket 17 engages with the front end or the rear end of the upper surface of the wheel holder 13. Again, the wheel 12 is positioned at the exposed position so as to protrude from the lower end of the transport base body 11.

  That is, the engagement release lever 18 and the engagement set lever 20 constitute wheel position switching means.

  5 and 6 show conveyance of an article using a conveyance system by a combination of the conveyance carriage 10 and the roller conveyor 21 described above.

  In this transport system, the transport carriage 10 is positioned with the lower end position of the transport base body 11 at the same height as the transport surface position of the roller conveyor 21 (the surface including all the roller upper ends) with the wheel 12 in the exposed position. It is formed to be.

  First, as shown in FIG. 5A, the front and rear wheels 12 of the transport carriage 10 are positioned at the exposed positions so as to protrude from the lower end of the transport base body 11. And the floor is moved toward the roller conveyor 21 by the rotation of the wheel 12.

  Next, as shown in FIG. 5B, the front part of the front side of the wheel unit 14 in the transport base body 11 is placed on and supported by the inlet portion of the roller conveyor 21. In this state, the front engagement release lever 18 is operated. At this time, the engagement of the fixing bracket 17 to the wheel unit 14 is released, and the wheel unit 14 is tilted inward by the urging of the coil spring 19, so that the front wheel 12 does not protrude from the lower end of the transport base body 11. It will be in the state located in the stored storage position.

  Next, as shown in FIG. 5 (c), when the transport carriage 10 is pushed into the roller conveyor 21 by more than half in the front-rear direction, the rear engagement release lever 18 is operated. At this time, the engagement of the fixing bracket 17 to the wheel unit 14 is released, the wheel unit 14 is tilted inward by the urging of the coil spring 19, and the rear wheel 12 does not protrude from the lower end of the transport base body 11. It will be in the state located in the storing position stored in.

  Next, as shown in FIG. 5 (d), the transport carriage 10 in a state where both the front and rear wheels 12 are positioned at the storage position is pushed and moved on the roller conveyor 21.

  Next, as shown in FIG. 6A, when the transport carriage 10 is pushed out about half of the front and rear direction from the exit of the roller conveyor 21, the front engagement set lever 20 is operated. At this time, the pair of front wheel units 14 stand against the bias of the coil spring 19, the fixing bracket 17 engages with the front end of the upper surface of the wheel holder 13, and the wheel 12 is again at the lower end of the transport base body 11. It will be in the state located in the exposure position exposed so that it may protrude from.

  Next, as shown in FIG. 6 (b), the rear part of the rear stage wheel unit 14 in the transport base body 11 is placed on and supported by the outlet part of the roller conveyor 21. In this state, the rear engagement set lever 20 is operated. At this time, the pair of rear wheel units 14 stand against the bias of the coil spring 19, the fixing bracket 17 engages with the rear end of the upper surface of the wheel holder 13, and the wheel 12 again becomes the carriage base body 11. It will be in the state located in the exposed exposure position so that it may protrude from the lower end of this.

  And as shown in FIG.6 (c), the conveyance trolley | bogie 10 is pushed and the floor is moved toward the front from the roller conveyor 21 by rotation of the wheel 12. FIG.

  According to the transport cart 10 having the above configuration, the floor can be moved by exposing the wheel 12, while the wheel 12 is stored and transported on the roller conveyor 21 as it is. can do. Therefore, the conveyance by the roller conveyor 21 can be performed only by the conveyance cart 10 without using a pallet.

  In addition, since the front wheel 12 is provided behind the front end of the transport table main body 11 in the transport cart 10 having the above-described configuration, when the transport cart 10 is placed on the roller conveyor 21, The wheel 12 can be stored in a state where the front portion of the wheel 12 is supported on the roller conveyor 21. In addition, since the rear wheel 12 is provided in front of the rear end of the transport table body 11, when the transport cart 10 is lowered from the roller conveyor 21, it is behind the rear wheel 12 in the transport table body 11. The wheel 12 can be exposed in a state where the portion is placed on and supported by the roller conveyor 21. Therefore, the operation | work which retracts the front wheel 12 or the operation | work which exposes the rear wheel 12 can be performed easily.

  Furthermore, according to the transport system configured as described above, the lower end position of the transport base body 11 is positioned at the same height as the transport surface position of the roller conveyor 21 with the wheel 12 of the transport cart 10 in the exposed position. Therefore, it is not necessary to lift the transport carriage 10 and place it on the roller conveyor 21. Therefore, workability including taking in and out of the wheel unit 14 is improved and goods can be transported smoothly.

  In the above embodiment, the wheel unit 14 is tilted. However, the present invention is not particularly limited to this, and a multi-stage pulling method in which the wheel is pulled out or retracted by rotating a screw or a telescopic rod may be used. In addition, a configuration such as a wheel slide system in which only the wheel is slid up and down or the entire wheel unit is slid horizontally may be employed.

  Moreover, in the said embodiment, although it was set as the structure which attached the wheel unit 14 to the bottom of the conveyance base main body 11, it is not limited to this in particular, It is the structure which attached the castable caster which can change direction easily. There may be.

  Moreover, in the said embodiment, although the conveyance base main body 11 shall be formed in the rectangular box shape opened upwards, it is not limited to this in particular, A rack form etc. may be sufficient and an article can be loaded. The form does not matter.

The present invention is useful for a transport carriage used for transporting articles and a transport system using the same.

It is a side view of the conveyance trolley concerning an embodiment of the present invention. It is a front view of the conveyance trolley concerning an embodiment of the present invention. It is explanatory drawing which shows the wheel unit located in the exposure position. It is explanatory drawing which shows the wheel unit positioned in the storing position. It is explanatory drawing which shows the first half of conveyance of the articles | goods by a conveyance system. It is explanatory drawing which shows the latter half of conveyance of the articles | goods by a conveyance system. It is explanatory drawing which shows conveyance of the articles | goods by the conventional conveyance system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,30 Conveyance trolley 11 Conveyance pedestal main body 11a Drop board 12 Wheel 13 Wheel holder 14 Wheel unit 15 Axle 16 Mounting shaft 17 Fixing bracket 18 Engagement release lever 19 Coil spring 20 Engagement set lever 21, 31 Roller conveyor 32 Caster 33 Pallet

Claims (4)

A transport carriage used for transporting articles,
A carrier base for storing articles, and wheels provided on the front and rear of the bottom of the carrier base, respectively,
The wheel is provided with wheel position switching means for switching between an exposed position exposed so as to protrude from the lower end of the transport base body and a storage position stored so as not to protrude from the lower end of the transport base body. Trolley. In the conveyance trolley | bogie described in Claim 1,
The transport carriage in which the front wheel is provided rearward of the front end of the transport base body and / or the rear wheel is provided forward of the rear end of the transport base body. A transport system comprising a transport carriage and a roller conveyor used for transporting articles,
The transport carriage includes a transport base body for storing articles, and a wheel provided at the bottom of the transport base body,
The wheel is provided with wheel position switching means for switching between an exposed position exposed so as to protrude from the lower end of the transport base body and a storage position stored so as not to protrude from the lower end of the transport base body. system. In the conveyance system according to claim 3,
The transport system is configured such that the lower end position of the transport base body is positioned at the same height as the transport surface position of the roller conveyor in a state where the wheel is in the exposed position.

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