JP2011057181A - Hand cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suggest a hand cart capable of carrying articles to be carried placed on the ground surface by directly lifting up the articles. <P>SOLUTION: This hand cart comprises a handle 10 extended in a vertical direction, a pair of right and left cargo receiving rod bearings 50 provided in front of a lower end part of the handle 10, two cargo receiving rods 60 arranged side by side with a prescribed space in a right and left direction in front of the handle 10 since each rotary shaft 61 projecting in a right and left direction from an intermediate portion is supported by the cargo receiving rod bearings 50, a bearing 30 for a wheel fixed to the vicinity of the lower end part of the handle 10, and a pair of wheels 40 having axles supported on the bearing 30. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  A technique related to a hand cart for carrying goods is disclosed below.

  In recent years, undergrounding that embeds electric wires, telephone lines and the like under a road has been promoted from the viewpoint of disaster prevention and landscape. When undergrounding, an electric wire joint groove is provided under the ground, and a laying pipe such as a PVC pipe or an iron pipe through which the electric wire or the like passes is disposed. The laying pipe is a long object such as φ230 mm and a length of 5 m, and the weight exceeds 90 kg. Installation work of the common cable groove on the road is done at night, but the work space is limited on one-sided one-lane roads, etc., so large trucks and crane cars can not be entered, so it is necessary to carry it close by truck. The laid pipes that have been released must be transported manually to the burial site.

  For transporting such a heavy object having a heavy weight, for example, a four-wheel hand cart as disclosed in Patent Documents 1 and 2 can be used. That is, two hand carts are prepared, the end parts of the transported goods are placed on each of the hand carts so as not to roll, and the hand carts are operated and transported by two workers.

JP 05-246648 A JP 05-262476 A

  In the transporting operation, it is the worker who places the laying pipes that have been lowered from the truck on the ground and placed on the hand cart. That is, in order to place the laying pipe on the hand cart so that it can be transported, at least two workers need to lift the laying pipe by hand and place it on the hand cart. With heavy laying pipes, this transfer work alone is heavy labor and should be dealt with. That is, there is a need for a hand cart that can eliminate the need to transfer a transported object placed on the ground or the like.

The hand cart proposed for the above issues is
A handle that extends vertically,
A pair of left and right load receiving rod bearings provided in front of the lower end portion of the handle;
Two load receiving rods extending in the front-rear direction, arranged in a left and right direction at a predetermined interval in front of the handle, with a pivot shaft protruding in the left and right direction from an intermediate portion supported by the load receiving rod bearing;
A wheel bearing fixed near the lower end of the handle;
A pair of wheels with axles supported by the wheel bearings;
It is comprised including.

  The hand cart according to the above proposal supports a transported object with two receiving rods arranged on the left and right in front of the handle. For example, if the object to be transported is a laying pipe placed on the ground, a hand cart load receiving rod can be inserted into the gap formed between the laying pipe, which is a round pipe, and the ground. By laying down the handle, the laying pipe can be lifted by the lever principle with the axle as a fulcrum. Since the load receiving rod is supported by a rotating shaft that protrudes in the intersecting direction, it rotates (swings) like a seesaw around the rotating shaft according to the inclination of the hand cart, and supports the laying pipe. To do. Therefore, it is not necessary to transfer the transported object from the ground by a human hand, and the transported object placed on the ground can be directly lifted and transported by the hand cart.

The perspective view which showed embodiment of the hand cart. The figure which looked and showed the hand cart of FIG. 1 from back. (A) is the figure which looked at the hand cart of FIG. 1 made into the upright state from the side, (B) is the figure which looked at the hand cart from the front. (A) is the figure which looked at the hand cart of FIG. 1 made into the inclined state from the side, (B) is the figure which looked at the hand cart from the front.

An embodiment of a hand cart is shown in a perspective view in FIG. 1 and a view from the rear in FIG.
The hand cart of this embodiment includes a handle 10, a load receiving plate 20, a wheel bearing 30, and a pair of left and right wheels 40. Further, in the case of the present embodiment, the hand cart includes two load receiving rod bearings 50 fixed to the load receiving plate 20 and two load receiving rods 60 supported by the load receiving rod bearing 50. Is done.

  The handle 10 extends in the up-down direction as an inverted U-shape, and a "<"-shaped bracket 11 is fixed to the lower end portion thereof by welding the end portion or the like. A wheel bearing 30 extending in the left-right direction is fixed to the bracket 11 by welding or the like. In the case of this embodiment, a handle bar 12 extending in the vertical direction is provided at the approximate center of the inverted U-shaped handle 10, and can be easily moved with one hand when the hand cart is not used for transportation. It is supposed to be made. The handle bar 12 has a distal end portion curved in a bowl shape, a proximal end portion is flattened and welded to a central portion of the wheel bearing 30.

  The flat load receiving plate 20 has a rear end portion bent upward to form a flange, and is fixed to the lower end portion of the handle 10 by welding or the like, thereby protruding forward from the lower end portion of the handle 10. ing. And the load receiving plate 20 of this embodiment is formed with a notch 21 having a predetermined width W from the front end toward the rear end in the center portion. The notch 21 does not reach the rear end, and the rear end portion of the load receiving plate 20 is continuous in the left-right direction. A load receiving rod bearing 50 is fixed to the upper surface of the load receiving plate 20 on both the left and right sides of the notch 21. By forming a notch 21 in the load receiving plate 20 and fixing the load receiving rod bearings 50 on both sides, a commercially available hand cart for a cylinder or the like can be used for processing to obtain the hand cart of this embodiment. Application is easy.

  The wheel bearing 30 fixed in the vicinity of the lower end portion of the handle 10 by the bracket 11 is a cylindrical shape extending in the left-right direction, and the axle is penetrated and supported. Since the wheels 40 are fixed and rotated at both ends of the axle passing through the wheel bearing 30, the handle 10 can be tilted with the axle of the grounded wheel 40 as a fulcrum. The wheel bearing 30 may be fixed at the vicinity of the lower end portion of the handle 10 and may be the lower surface of the rear end portion of the load receiving plate 20. The wheel bearing 30 is not limited to the axle-through type and may be a left-right separate type.

  The load receiving rod bearing 50 includes a flat plate member 51 that is long in the front-rear direction, and a cylindrical member 52 that is fixed to the front end portion of the flat plate member 51 by welding or the like and that has the axial direction as the left-right direction. The flat plate member 51 is fixed to the upper surface of the load receiving plate 20 by welding or the like and extends forward from the lower end portion of the handle 10, and the front end portion protrudes from the front end of the load receiving plate 20. The cylindrical member 52 is fixed to the front end portion of the protruding flat plate member 51. As a result, the load receiving bar 60 can be rotated by approximately 180 °. The flat plate member 51 is preferably welded to the lower end portion of the handle 10 in terms of strength. However, the flat plate member 51 does not need to be in direct contact with the lower end portion of the handle 10 and may be a short one. Good.

  In the present embodiment, the load receiving rod bearing 50 fixed to the upper surface of the load receiving plate 20 is shown, but the flat plate member 51 of the load receiving rod bearing 50 can also be fixed to the lower surface of the load receiving plate 20. Even without the load receiving plate 20, the rear end portion of the load receiving rod bearing 50 can be directly fixed to the lower end portion of the handle 10 by welding or the like. That is, various specific structures in which the load receiving rod bearing 50 is provided in front of the lower end portion of the handle 10 can be assumed. However, it is better to use the cargo receiving plate 20 in terms of strength and diversion of the above-mentioned ready-made products.

  The load receiving bar 60 is formed using a rod-shaped material such as a steel bar, a deformed steel bar, a round pipe, a square pipe, and the like, and has a rotating shaft 61 that protrudes in the left-right direction from an intermediate portion. The rotating shaft 61 is supported through the cylindrical member 52 of the load receiving rod bearing 50. That is, since the rotating shaft 61 is provided in a direction intersecting with the load receiving rod 60 extending in the front-rear direction, the load receiving rod 60 rotates like a seesaw with the rotating shaft 61 as a fulcrum. The rotary shaft 61 is provided with a flange 62 made of bolts, washers or the like so as to sandwich the cylindrical member 52 so as to prevent falling off.

  The rotating shaft 61 can be provided by a technique such as welding a rod-shaped material of the same material at a right angle to an intermediate portion of the load receiving rod 60. The portion where the rotary shaft 61 is projected is a portion shifted from the center of gravity of the load receiving rod 60, that is, a portion that is closer to the front than the center of gravity of the load receiving rod 60 when the load receiving rod 60 is attached to the load receiving rod bearing 50. . As a result, the center of gravity of the loaded load receiving rod 60 is located behind the load receiving rod bearing 50, and the load receiving rod 60 always rotates the front end side upward and the rear end side downward. Power works. As a result, the load receiving rod 60 of the present embodiment can maintain the state (standby state) of FIG. 1 with its rear end abutting against the load receiving plate 20 except during transportation, and can be rotated unnecessarily. There is no rubbing or bumping on the ground.

  With reference to FIG.3 and FIG.4, the state of the hand cart which conveys laying pipe | tube P (it shows with a dotted line) as an elongate conveyance thing is demonstrated.

  First, as shown in FIG. 3, the hand cart is brought into an upright state, and the lower surface of the load receiving plate 20 is grounded or the ground surface is passed. In this upright state, the load receiving bar 60 maintains the standby state because the rotating shaft 61 is in front of the center of gravity as described above. Since the laying pipe P to be transported is a round pipe, if it is placed on the ground, a gap is formed on both sides of the ground plane. Therefore, when the hand cart in an upright state is slid from one end of the laying pipe P, the load receiving rod 60 can be inserted into the gap formed between the laying pipe P and the ground. At this time, since the notch 21 is formed in the load receiving plate 20, the load receiving plate 20 can slide into the gap while avoiding the grounding surface of the laying pipe P by the notch 21. The both load receiving rods 60 inserted into the gap are located within the diameter of the laying pipe P across the grounding surface of the laying pipe P.

  When the handle 10 is pulled down from the upright state of FIG. 3, the hand cart rotates about the axle of the grounded wheel 40 as a fulcrum, and the load receiving plate 20 is lifted from the ground to be in the tilted state of FIG. 4. At this time, the load receiving rod 60 comes into contact with the outer peripheral surface of the laying pipe P and supports the laying pipe P. That is, the floating load receiving plate 20 is inclined as the hand cart rotates, but the load receiving rod 60 that contacts the laying pipe P has its front end lowered and rearward according to the laying pipe P around the rotation shaft 61. Since it rotates so that the end rises, it continues to support the laying pipe P from below.

  In the hand cart from the upright state of FIG. 3 to the tilted state of FIG. 4, the axle of the wheel 40 (wheel bearing 30) is a fulcrum, the load receiving rod bearing 50 (rotary shaft 61) is the point of action, and the tip of the handle 10 is Since the lever as the power point is formed, the laying pipe P can be lifted easily. By performing the same operation on the opposite side of the laying pipe P, the laying pipe P is lifted by the hand cart and transported by the hand cart as it is. Therefore, it is not necessary to transfer the transported object from the ground by a human hand, and the transported object placed on the ground can be directly lifted and transported by the hand cart.

10 Handle 11 Bracket 12 Handle bar 20 Load receiving plate 21 Notch 30 Wheel bearing 40 Wheel 50 Load receiving rod bearing 51 Flat plate member 52 Cylindrical member 60 Load receiving rod 61 Rotating shaft 62 Flange

Claims (3)

A handle that extends vertically,
A pair of left and right load receiving rod bearings provided in front of the lower end portion of the handle;
Two load receiving rods extending in the front-rear direction, arranged in a left and right direction at a predetermined interval in front of the handle, with a pivot shaft protruding in the left and right direction from an intermediate portion supported by the load receiving rod bearing;
A wheel bearing fixed near the lower end of the handle;
A pair of wheels with axles supported by the wheel bearings;
Consists of a hand cart. A load receiving plate projecting forward from a lower end portion of the handle;
The load receiving plate has a notch with a predetermined width from the front end toward the rear end, and the load receiving bar bearing is fixed to the left and right sides of the notch.
The hand cart according to claim 1. In the load receiving rod, the rotating shaft protrudes in front of the center of gravity,
The hand cart according to claim 1 or 2.

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