JP5221989B2 - Transport cart - Google Patents

Description

  The present invention relates to a transport cart.

  For example, as shown in FIGS. 6 and 7, a caster 2 is attached to the back surface of a rectangular base 1 that is a placement plate for a load 4, and the end of the base 1 is pushed by hand. There is one in which the rod 3 is erected, and the cart 4 is moved and the load 4 is carried by pushing the hand push rod 3 (see, for example, Patent Document 1).

  In most of the transport carts, as shown in FIG. 6, the casters 2 are disposed at the four corners on the back surface of the base 1, and a total of four casters are attached.

In order to attach the caster 2 to the back surface of the base 1, a pedestal provided on the caster 2 is fixed to the base 1 with a bolt inserted into a bolt insertion hole formed in the base 1 in advance.
JP 2006-51861 A

  In order to attach the caster to the main body of the carriage, it is necessary to form the bolt insertion holes in the main body of the carriage in advance as described above, so that unnecessary bolt insertion holes should not be provided in the base. In order to achieve this, as a matter of course, the bolt insertion hole is formed only at the position where the caster is disposed.

  And the site | part in which a bolt insertion hole is formed is four places which are the four corners of a base, for example, and a conveyance trolley becomes a four-wheel structure.

  By the way, when a load is transported by a transport cart, it may be necessary to go over not only a flat place but also an inclined place, a stepped place, a depression, a groove and the like as shown in FIG.

  In the case of a four-wheel transport cart, when the front wheel is fitted into the groove 5, the two wheels of the front wheel are left in order to escape from the groove 5. The load of the load 4 must be received by only the two rear wheels, and not only the cart body tilts and becomes unstable, but the cart body does not move and may not be transported.

  In addition, if the cart body tilts, the cargo collapses and the luggage is scattered, and the worker who is carrying the product is pushed down by the cargo that caused the cargo collapse and falls down or becomes the underlay of the luggage. There is also a risk of personal injury such as being trapped between a baggage and a wall.

  The inconvenience is due to the fact that the carriage structure is a four-wheel structure. However, since the mounting positions of the casters with respect to the base are regulated in advance at four locations at the four corners, the casters are arranged in other arrangements. In order to obtain a cart, another type (model) of transport cart must be prepared separately, which is not workable.

  The object of the present invention is to eliminate the inconvenience of the conventional example, and it is possible to freely attach casters to any location at the site, easily secure a transport cart that meets the conditions of use, and It is an object of the present invention to provide a transport cart that can easily overcome grooves such as grooves and that is easy to use and can improve workability.

In order to achieve the above object, the present invention according to claims 1 to 3 is directed to a transport cart in which casters are attached to the four corners of the periphery of the rear surface of the cart body on which the base is mounted on the frame. serial inside the contour line connecting the casters mounted to the four corners, that in the side view the two casters in a column in the same direction as the traveling direction at the time of use, provided so as not to overlap with casters mounted to the four corners, and The distance between the two casters provided in the column is wider than the distance between the two casters and the casters attached to the four corners. Further, the distance between the two casters provided in the column is: The gist of the present invention is that it is wider than the interval between two casters arranged side by side on the front side or rear side of the casters attached to the four corners .

According to the first aspect of the present invention, in addition to a total of four casters provided at the four corners of the cart body, two casters are arranged in the center, so that there are a total of six wheels, The two casters are positioned in the central column as described above, so even if the two wheels on the left and right front wheels fit into the groove, in this state, the two wheels on the rear central column and the two wheels on the left and right rear wheels With the four wheels in total, the cart body can be supported in a stable state, and the cart body does not tilt.

  Similarly, when one of the two wheels in the central column fits in the groove, the cart body can be supported by a total of five wheels including the four wheels on the front, rear, left and right and the remaining one in the center column. In addition, even if the left and right rear wheels fit into the groove, the cart body can be supported in a stable state with a total of four wheels, in this state, two wheels in the center column in front and two wheels in the left and right front wheels. The bogie body does not tilt, and you can safely go over the grooves sequentially.

The invention according to claim 4 is provided with a mounting plate for each of the four-wheel casters attached to at least four corners of the peripheral portion of the cart body and the two or more casters attached in a column in the same direction as the traveling direction in use. The gist is to fix to the lower surface of the frame, select an arbitrary one of the mounting plates, removably attach the pedestal of the caster, and fix the caster.

According to the fourth aspect of the present invention, since the mounting plates are attached in advance to all the places where the casters are expected to be attached to the frame constituting the cart body, the mounting plates at the locations that match the use conditions By simply selecting and attaching a caster base to this, or simply removing a caster that is not used, it is possible to easily secure a transport carriage of a desired mode. Such work can be easily performed at the site of use.

The gist of the invention according to claim 5 is that the base corresponding to the portion to which the mounting plate is mounted is formed with a recess for receiving a caster as a missing portion.

According to the fifth aspect of the present invention, since the upper part of the mounting plate is formed in the opening, when attaching the pedestal of the caster to the mounting plate, it is possible to work from both the upper and lower surfaces, such as bolting and nut tightening. Easy to do. Also, the caster storage recess formed in the base will be closed by the mounting plate at the bottom, and when the cart body is stacked, the caster of the upper cart body is the lower cart body in the recess It is supported by the mounting plate.

  As described above, the transport cart of the present invention has mounting plates attached in advance to all locations where caster mounting is assumed on the base. Casters can be installed freely at the site, transportation carts that match the usage conditions can be easily secured, and grooves such as depressions and drainage grooves can be easily overcome, improving usability and improving workability. It is.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a bottom view showing a first embodiment of a transport cart of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the same, FIG. 4 is a bottom view showing a second embodiment , The frame 6 is composed of a square pipe made of iron or aluminum alloy, and a base 7 that is a mounting plate made of iron or aluminum alloy joined to the upper portion of the frame 6.

  The frame 6 is formed by joining square pipes in the vertical and horizontal directions in a lattice shape, and in the illustrated example, a plurality of square pipes that are short in the horizontal direction are formed on the four long vertical pipes in the vertical direction. Square pipes are joined, and in the example shown in the figure, 15 rectangular sections 8 having a length of about 191 mm and a width of about 199 mm are formed into three rows in a vertical row and five rows in a horizontal row.

On the lower surface of the lattice-like frame 6, a mounting plate 9 for the caster 2 is attached in advance with a blind rivet 10 to a section 8 where the caster 2 is expected to be attached. As shown in FIG. 1, the mounting positions of the mounting plate 9 are four in total in the four corner sections 8 of the carriage body, two in total in the center column in the four corner sections 8 , and a total of six positions. is there.

  The shape of the mounting plate 9 is a hexagonal shape in which the angle of the two opposing corners is 90 degrees, and the 90-degree corners are in contact with the lower surfaces of the vertical and horizontal frames 6 so as to close the opening of the section 8. Then, fix with the blind rivet 10.

Base 7 which is disposed on the upper surface of the frame 6, which the mounting plate 9 is attached only to the portion of the partition 8 which have not been provided, part of the compartment 8 with a mounting plate 9 as shown in FIG. 2 Then, the bottom portion is formed in a recess for storing the caster 2, which is closed by the mounting plate 9.

As described above, an arbitrary portion of the mounting plate 9 is selected so as to meet the use conditions, and the caster 2 is fixed to the mounting plate 9. As shown in FIGS. 1, 2, and 3 , the caster 2 has a caster body 2 a rotatably attached to a pedestal 2 b, and the pedestal 2 b is fixed to a mounting plate 9 with bolts and nuts 11.

As shown in FIG. 3, the distance between the two casters 2 provided in the column is wider than the distance between the two casters and the casters 3 attached to the four corners.

Also, as shown in FIGS. 1 and 2, the distance between the two casters provided in the column is wider than the distance between the two casters arranged side by side on the front side or rear side of the casters attached to the four corners. It was supposed to be.

  Next, for example, a method of attaching the caster 2 to the arrangement shown in FIG. Even if the left and right front wheels of the caster 2 are fitted into the groove 5 as shown in FIG. 5 (b) by pushing the transport carriage, in this state, the two rear casters 2 and the left and right rear two casters 2 Thus, the cart body can be stably supported by a total of four wheels, and the cart body does not tilt.

  When the vehicle further moves forward to reach the position of FIG. 5 (c) and the front wheel of the two central casters 2 fits into the groove 5, the front / rear / right / left four casters 2 and the central vertical train The cart body can be supported in a stable state by a total of five wheels including the remaining one rear caster 2.

  Finally, even if the two casters 2 of the left and right rear wheels are fitted in the groove 5, in this state, there are a total of four wheels, that is, the two casters 2 in the center vertical column and the two casters 2 in the left and right front wheels. The carriage main body can be supported in a stable state, and in any case, the carriage main body does not tilt, and the groove 5 can be safely and sequentially passed.

  Of course, the width of the groove 5 is not limited to a range not exceeding the wheel pitch between the front wheel or the rear wheel and the wheel in the center column. In the illustrated example, the width of the groove 5 is about 214 mm. It is possible to get over.

  If the usage conditions are changed, the bolts and nuts 11 are removed, the base 2b is removed from the mounting plate 9, the caster body 2a is removed, or the caster 2 is replaced with the mounting plate 9 attached to another section 8. Alternatively, the caster 2 is attached to a location that meets the new usage conditions by setting it anew.

  When the cart bodies are stacked, the caster 2 of the upper cart enters the housing recess of the lower cart and is supported by the mounting plate 9.

  FIG. 4 shows a second embodiment of the present invention. On the lower surface of the lattice-like frame 6, the mounting plate 9 of the caster 2 is attached by the blind rivet 10 to the section 8 where the caster 2 is expected to be mounted. Although it is attached in advance, there are a total of four places for attachment of the attachment plate 9 in the four corner sections 8 of the carriage body, two in total in the middle position of the four corner sections 8 in the central column, and two in the left and right center section 8 in total. The total number is 8 places.

It is a bottom view which shows 1st Embodiment of the conveyance trolley | bogie of this invention. It is a top view which shows 1st Embodiment of the conveyance trolley | bogie of this invention. It is a side view which shows 1st Embodiment of the conveyance trolley | bogie of this invention. It is a bottom view which shows 2nd Embodiment of the conveyance trolley | bogie of this invention. It is explanatory drawing which shows the use condition of the conveyance trolley | bogie of this invention. It is a bottom view of the conventional conveyance cart. It is explanatory drawing which shows the use condition of the conventional conveyance trolley | bogie.

DESCRIPTION OF SYMBOLS 1 Base 2 Caster 2a Caster main body 2b Base 3 Hand push bar 4 Luggage 5 Groove 6 Frame 7 Base 8 Partition 9 Mounting plate 10 Blind rivet 11 Bolt and nut

Claims (5)

In transport carts that have casters attached to the four corners of the backside of the base body with the base mounted on the frame, inside the contour line that connects the casters attached to the four corners, in the same direction as the direction of travel during use A transport cart characterized in that two casters are provided so as not to overlap with casters attached to four corners in a side view . 2. The transport cart according to claim 1, wherein a distance between two casters provided in the column is wider than a distance between the two casters and casters attached to four corners. 3. The transport cart according to claim 1 , wherein a distance between two casters provided in the column is wider than a distance between two casters arranged side by side on the front side or the rear side of the casters attached to the four corners . And casters of the four wheels attached to the four corners of the peripheral portion of the carriage body, each of the mounting plates of 2 or more wheels casters mounted in tandem in the same direction as the traveling direction at the time of use is fixed to the lower surface of the frame, the mounting The transport cart according to any one of claims 1 to 3, wherein an arbitrary plate is selected, a caster base is detachably attached thereto, and the caster is fixed.   5. The transport cart according to claim 1, wherein the base corresponding to the portion to which the mounting plate is mounted is formed with a recess for accommodating casters as a missing portion.

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