JP2010143419A - Heavy load moving truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heavy load moving truck for stably and safely moving heavy loads such as furniture or flowerpots. <P>SOLUTION: A load supporting space 3 is borne on the upper part of a truck body 2 in a horizontally movable manner, and a knob 21 is protruded frontward from the front side frame. A front roller 4 is journaled to the lower part with a front shaft 5a, a rear roller 4 is journaled with a rear shaft 5d, and an intermediate roller 4 is journaled to the wheelbase of the roller 4 with a plurality of intermediate shafts 5b, 5c. At the center position of the roller 4 journaled thereto, the heavy load moving truck 1 arranged outside an outer peripheral end 3a of the load supporting space 3 is inserted under the heavy loads W such as the plurality of furniture to movably support the heavy loads W. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a heavy goods moving carriage used for safely moving heavy goods such as furniture, refrigerators, flower pots, etc. used in general households and offices.

FIG. 10 shows a conventional mobile carriage 50. This conventional example is the same type as that described in, for example, registered utility model No. 3051835. A turntable 52 is mounted on the main body 51 so as to be horizontally rotatable, and includes a knob 53 that protrudes forward from the front side frame. A front roller 54 is pivotally supported by a front shaft 54 at the lower end, and As shown in FIG. 11, the rear roller 57 is pivotally supported by the shaft 56, and at least four of the movable carriages 50 are inserted into the lower corners of the heavy object W such as furniture to support the heavy object W. The load received from the heavy object W can move integrally with the heavy object W.
Registered Utility Model No. 3051835

In the moving carriage 50, the roller shaft has two front and rear structures as shown in FIG. 12, and therefore, when the floor F that moves the heavy object W such as furniture is folded, the joint of the edge of the folding is provided. In the case of flooring, in the case of flooring, the rotation of the roller 55 is obstructed by the groove G of the joint between the plates in the case of flooring, or in the case of tiles or stones, and the movement of the moving carriage 50 becomes suddenly difficult. Since there is a risk that heavy objects W such as furniture may fall off the carriage and injure the operator or damage the floor F, the floor F that can be used is limited to a flat surface.

Further, as shown in FIG. 13, the conventional movable carriage 50 has a structure in which a front roller 55 and a rear roller 57 are disposed immediately below the rotary table 52 that holds the load of the heavy object W. A part of the front roller 55 and the rear roller 57 and a range 52a, 52b, 52c, and 52d in which the load cannot be held exceeding the center of the front shaft 54 and the rear shaft 56 are generated. For this reason, when the load of the heavy object W such as moving furniture is applied to the range, the movable carriage 50 easily falls down.

The moving carriage 50 is inserted into the lower four corners of the heavy object W such as furniture to support the heavy object W, and moves integrally with the heavy object W by the load received from the heavy object W. However, when a difference in height occurs due to slight distortion E in the floor F on which the moving carriage 50 travels, there are only three moving carriages 50 inserted into the four corners of the heavy object W, or rarely two. Some moving carriages 50 that are supported by the platform and do not receive a load from the heavy object W are released from the integration with the heavy object W, the traveling is stopped, and the heavy object such as moving furniture is moved. It was left behind from W, preventing smooth movement.

Therefore, the present invention is applicable to a wide range of flooring materials such as folds, flooring, tiles, and stone flooring, which are widely used in general households, and have a groove G and a strain E of connecting portions of the floor F. An object of the present invention is to provide a heavy-duty moving carriage that can move smoothly, stably, and safely.

In order to solve the above-mentioned problems, the heavy-duty moving carriage of the present invention is provided with a load receiving platform that is supported in a vertically rotatable manner at the upper part of the main body, and includes a knob that projects forward from the front frame. The front roller is supported by the front shaft at the lower portion, the rear roller is supported by the rear shaft, the plurality of intermediate rollers are supported by the plurality of intermediate shafts at the axial distance of the roller, and the rollers supported by the shafts The center position is arranged outside the outer peripheral end of the load receiving platform.

Second, the load receiving platform can be expanded and contracted in the vertical direction and is biased upward by an elastic body or elastic structure such as a spring.

According to this, even if the front roller is on the floor groove while being moved while being inserted into the lower surface of a heavy object such as furniture and supporting the heavy object, the intermediate roller and the rear roller support the heavy object. Therefore, the front roller does not fit into the floor groove. Similarly, even if the intermediate roller is on the floor groove, the heavy roller is supported by the front roller and the rear roller. Stably supporting heavy objects. Therefore, the heavy goods movement trolley | bogie of this invention can move heavy goods, such as furniture, smoothly and safely.

In addition, since all the rollers of the movable carriage according to the present invention are arranged outside the outer peripheral end of the load receiving platform, even if the load of heavy objects such as furniture is off the center of the load receiving platform, the range of the load receiving platform is left. Unless this is the case, the cart will not fall easily.

In addition, the upper part of each roller in the main body of the carriage has a structure that is off the bottom of the load receiving base that requires strength and has a thick structure, so there is no need to secure extra space directly above the rollers, and a thin structure Therefore, there is an advantage that the shaft support of the roller can obtain a position that suppresses the total height of the carriage, and a low structure in which the height of the carriage is slightly increased from the diameter of the roller. Therefore, the amount of lifting the furniture or the like in the work of placing the furniture or the like on the carriage is reduced, and safety and workability are improved.

In addition, when the movable carriage according to the present invention is inserted into the lower four corners of a heavy object such as furniture to support the heavy object and is moved integrally with the heavy object by the load received from the heavy object Even if a heavy load is lost on some of the trucks due to the distortion of the floor surface or the difference in height, there is a risk that the heavy truck will be left unintegrated and left behind, and the carriage of the present invention will receive the load. Since the loading platform extends in the vertical direction and the connection between the heavy object and the carriage can be secured, the carriage can be prevented from being detached from the moving heavy article.

As described above in detail, when the movable carriage according to the present invention is inserted into the four corners of the lower surface of a heavy object such as furniture and moved while supporting the heavy object, the groove or joint of the seam that the floor surface that travels moves has Because it can run without being affected by obstacles such as distortion and inclination, it can handle furniture, etc. heavy, safely, smoothly and easily in response to almost all floor materials used in ordinary homes and offices. It can be carried out.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a first embodiment of a heavy goods moving carriage 1 according to the present invention. The movable carriage 1 includes a synthetic resin body body 2, a synthetic resin roller 4, metal roller shafts 5 a, 5 b, 5 c, and 5 d, and a load receiving platform 3 provided on the upper part of the body body 2. It is configured.

As shown in FIGS. 3 and 4, the vehicle body 2 has a curved outer surface covering the rollers from the top plate 2c to the front, rear, left and right side surfaces 2d, 2e, 2f and 2g, and a rib 2b on the lower surface of the top plate 2c. A boss hole 23 penetrating vertically is provided at the center. A recess 22 for holding the load receiving platform 3 is provided on the top surface of the top plate 2c, and the bottom surface is open.

Further, as shown in FIG. 4, the rib 2b provided on the lower surface of the top plate 2c is integrally formed in a honeycomb shape from the boss hole 23 portion at the center of the vehicle body 2 to the front and rear side surfaces 2d, 2e, 2f, and 2g. Furthermore, 14 bearing portions 25 that support the roller shafts 5a, 5b, 5c, and 5d are provided on the front and rear, left and right side surfaces 2d, 2e, 2f, and 2g, and the rib 2b, and the roller 4 can be pivotally supported separately. Are arranged as follows.

Two rollers 4 are supported by the roller shaft 5a at the front part in the traveling direction of the carriage, two are supported by the roller shaft 5d at the rear part, and are supported by the roller shaft 5b at the front part between the front and rear axes. A total of 8 parts, one on each side 2f and 2g, and one on each side of the left and right side 2f and 2g supported by a roller shaft 5c at the rear part between the front and rear shafts, are outside the outer peripheral end 3a of the load receiving platform 3. Is placed in six places.

As a result, as shown in FIG. 5, the carriage of the present invention has a folding edge or surface distortion E when the floor F moving furniture or the like is folded, and in the case of flooring, a groove between the plate and the plate seam. G, or in the case of tiles or stones, a joint G is encountered. For example, even if the roller 4 supported by the front shaft 5a is on the groove G, the load applied to the load receiving platform 3 Is held by the roller 4 supported by the rear shaft 5d and the intermediate shafts 5b and 5c, and when the roller 4 supported by the intermediate shaft 5b is on the groove G as shown in FIG. The load applied to the load receiving platform 3 is held by the roller 4 supported by the front shaft 5a, the rear shaft 5d, and the intermediate shaft 5c, and the roller 4 supported by the intermediate shaft 5c is placed on the groove G. Or when the roller 4 pivotally supported by the rear shaft 5d is on the groove G. By similarly roller 4 which is rotatably supported by the other three axes, the load applied to the load receiving bed 3 will be held securely, the carriage 1 can be smoothly moved.

As shown in FIG. 2, the load receiving platform 3 includes a boss 32 at the center of the lower surface, and the tip of the boss 32 is a tapered return preventing hook 34. Further, the load receiving platform 3 is prevented from returning from the lower surface of the load receiving platform 3. The length of the boss 32 up to the upper portion of the hook 34 is about 2 mm longer than the depth of the boss hole 23 and the constricted portion 24 provided in the central portion of the vehicle body 2. Furthermore, three or more protrusions 33 having the effect of a spring are provided on the lower surface of the load receiving platform 3 at equal intervals on the same circumference.

The bottom portion of the boss hole 23 provided in the central portion of the vehicle body 2 is provided with a constricted portion 24 slightly narrower than the outer diameter of the return prevention hook 34. When the load receiving platform 3 is combined with the vehicle body 2, The hook part 34 does not pass through the boss hole 23 and return.

Thus, when the load receiving platform 3 is combined with the vehicle body 2, the load receiving platform 3 is held by receiving a force extending in the vertical direction by the projection 33 having the effect of the spring. Therefore, the load receiving platform 3 is provided with a function of extending and contracting about 2 mm in the vertical vertical direction while being held by the vehicle body 2. The load receiving platform 3 has an outer peripheral end 3a portion held by a recessed seat 22 provided on the top surface of the top plate 2c, so that the coupling with the vehicle body 2 is not unstable due to expansion and contraction.

Thus, as shown in FIGS. 7 and 8, when the carriage of the present invention is inserted into the lower four corners of the furniture or the like and moved, the carriage is inserted into the lower four corners due to some distortion E on the floor F. Even if there is a dolly that is unbalanced in the load of furniture, etc. applied to each, and can be held by only 3 carriages or rarely held by 2 carriages, it may be separated from the underside of furniture etc. As shown in FIG. 8, in the corresponding carriage 1a, the load receiving carriage 3 is not extended from the carriage main body 2 and detached from the lower surface of the furniture or the like. This is an effect that applies to the other carts 1b, 1c, and 1d.

FIG. 9 shows a second embodiment of the mobile carriage 1 according to the present invention. The difference from the first embodiment is that a metal spring 35 is attached to the outer periphery of the boss 32 at the center of the lower surface of the load receiving platform 3. When the load receiving platform 3 is combined with the vehicle body 2, the spring 35 is held by receiving a force extending in the vertical direction, and the load receiving platform 3 is being held by the vehicle body 2 as in the first embodiment. It has a function of stretching about 2mm vertically.

It is a top view which shows 1st embodiment of this invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a bottom view of FIG. It is explanatory drawing which shows the start of the groove | channel movement of a moving trolley | bogie. It is explanatory drawing which shows the middle of the groove | channel movement of a movable trolley | bogie. It is a perspective view for explanation of an example of use of the movable carriage according to the present invention. It is a center longitudinal section showing a second embodiment of the present invention. It is a three-dimensional perspective view of a conventional example moving carriage. It is a perspective view of a prior art example mobile trolley. It is a perspective view for explaining an example of use of a conventional example mobile carriage. It is explanatory drawing of a prior art example mobile trolley | bogie. It is a top view of a prior art example mobile trolley.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heavy goods moving trolley 2 Car body 3 Load receiving platform 3a Load receiving platform outer peripheral end 4 Roller 5a Roller shaft 5b Roller shaft 5c Roller shaft 5d Roller shaft 32 Load receiving platform boss 33 Spring protrusion E Floor distortion F Floor G Floor Groove W Furniture, etc.

Claims (2)

A load-carrying base that is supported so as to be horizontally rotatable is provided at the upper part of the main body, and is provided with a knob that protrudes forward from the front frame. The front roller is supported by the front shaft at the lower part, and the rear roller is supported by the rear shaft. A plurality of intermediate rollers are pivotally supported by a plurality of intermediate shafts at the axial distance of the rollers, and the center positions of the shaft-supported rollers are arranged outside the outer peripheral end of the load receiving platform. Heavy goods moving cart. The heavy-duty moving carriage according to claim 1, wherein the load receiving platform can be expanded and contracted in a vertical direction, and is urged upward by an elastic body or an elastic structure such as a spring.

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