Handcart

Abstract

To provide a handcart that can heat items being transported.SOLUTION: A handcart 1 comprises a bucket 2 for loading cargo, with a wheel 4 at the front of the bucket 2, handheld grips 5 at the rear, and leg frames 9 on the sides. Of the outer wall surfaces 20A, 20B, and 20C of the bucket 2, at least the outer wall surface 20A facing the wheel 4 is equipped with a heating unit 32 having an electric heater connected to a rechargeable battery 31.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a pushcart. [Background technology]

[0002] Conventionally, goose asphalt mixtures have been used as backfill materials for buried pipes. In this case, the backfilling width of the buried pipe is narrow, so a large goose asphalt finisher cannot be used. In addition, it is difficult to directly pour the goose asphalt mixture from a cooking truck into the backfilling portion of the buried pipe. Therefore, a method is adopted in which the gusset asphalt mixture is loaded onto a hand-pushed wheelbarrow and transported to the construction site. BACKGROUND ART Known hand-pushed unicycles include one in which a bucket is disposed between the wheel and the grip (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3223977 Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the viscosity of goose asphalt mixtures increases with temperature, there is a problem that the goose asphalt mixture tends to adhere to the bucket when the temperature of the wheelbarrow bucket drops. Also, when stone powder is sprinkled on the bucket as an anti-adhesion agent, the stone powder inhibits the adhesion of the goose asphalt mixture to the construction surface, so there is a demand to reduce the amount of stone powder used as much as possible. An object of the present invention is to provide a pushcart that can prevent items from adhering to the bucket. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention provides a handcart that has a bucket for loading an object to be transported, wheels at the front of the bucket, a handheld grip at the rear, and leg frames on the sides, and at least the outer wall surface of the bucket that faces the wheels is equipped with a heating section that has an electric heater connected to a rechargeable battery. [Effects of the Invention]

[0006] According to the present invention, it is possible to prevent the adhesion of transported materials to the bucket. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing a first embodiment of a pushcart; [Figure 2] FIG. [Figure 3] FIG. 10 is a perspective view showing a second embodiment of the pushcart. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Embodiment 1) [1. Wheelbarrow] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view of the pushcart 1. Fig. 2 is a plan view of the pushcart 1 as seen from below.

[0009] The handcart 1 includes a bucket 2 for loading an object to be transported, a support frame 3 for supporting the bucket 2, wheels 4 provided below and in front of the bucket 2, and a grip 5 provided at the rear of the bucket 2.

[0010] The support frame 3 is formed in the shape of a hollow pipe and is welded in the left-right direction to the lower part of the bucket 2. A tire frame 6 that extends forward and is formed in a substantially U-shape is welded to the support frame 3.

[0011] A front reinforcing frame 7 formed in a substantially U-shape is welded to the front corner of the bucket 2, and the front reinforcing frame 7 is welded to the front end of the tire frame 6.

[0012] The tire frame 6 is provided with a pair of brackets 8. Axles 4A of the wheels 4 are inserted into the brackets 8, and the wheels 4 are rotatably supported.

[0013] A pair of leg frames 9 formed in a roughly U-shape are welded to the rear corners of the bucket 2, and the leg frames 9 are welded to both ends of the support frame 3. The handcart 1 is configured so that it can stand on its own with the pair of leg frames 9 and the wheels 4 when an object to be transported is loaded into the bucket 2.

[0014] A pair of handle frames 10 are welded to the rear of the left and right sides of the bucket 2. The handle frames 10 extend toward the rear of the bucket 2 and are formed in a generally I-bar shape. A rubber grip 5 is provided at the rear end of the handle frames 10.

[0015] A hollow pipe-shaped first reinforcing frame 11 is welded between the handle frame 10 and the leg frame 9. A hollow pipe-shaped second reinforcing frame 12 is welded between the pair of handle frames 10 so as to fit along the upper edge of the rear part of the bucket 2. A hollow pipe-shaped third reinforcing frame 13 is welded to the front part of the leg frame 9 between the pair of leg frames 9.

[0016] [2. Heating plate] Bucket 2 is formed in a rectangular shape in a plan view and includes outer wall surface 20A facing wheels 4, left and right outer wall surfaces 20B, and outer wall surface 20C on the grip 5 side. Bucket 2 is made of metal, a material to which a magnet can be attached.

[0017] Of the wall surfaces of the bucket 2, a heating unit 32 is attached to each of the outer wall surfaces 20A to 20C, namely, the outer wall surface 20A facing the wheels 4, the outer wall surfaces 20B on the left and right sides, and the outer wall surface 20C on the grip 5 side.

[0018] The heating unit 32 is a heating plate made of steel plate. The heating unit 32 incorporates a rechargeable battery 31 and an electric heater connected to the battery 31. The battery 31 is a secondary battery, such as a lithium-ion secondary battery, a lead-acid battery, or a nickel-metal hydride secondary battery. The heating unit 32 energizes the electric heater to generate Joule heat, which heats the load loaded in the bucket 2. The heating unit 32 is equipped with magnets and is attached to all wall surfaces of the bucket 2 by magnetic force.

[0019] Although not shown, a switch for turning the power on and off is provided in the heating unit 32. When the power switch is turned on, electricity is supplied from the battery 31 to the electric heater of the heating unit 32, and when the power switch is turned off, electricity to the electric heater is cut off. The heating unit 32 may also include a thermoswitch 37. The thermoswitch 37 is configured to cut off the power supply from the battery 31 to the electric heater when the temperature of the bucket 2 reaches or exceeds a predetermined threshold.

[0020] In the first embodiment, damage to each of the heating parts 32 attached to the outer wall surfaces 20A to 20C is suppressed. For example, if the wheelbarrow 1 is toppled, the heating units 32 attached to the outer wall surface 20A opposite the wheels 4 are protected by the wheels 4 and avoid contact with the ground. If the wheelbarrow 1 is toppled, the heating units 32 attached to each of the left and right outer wall surfaces 20B are protected by the leg frames 9 and the edges 2A of the bucket 2 that protrude outward from the outer wall surface 20B and avoid contact with the ground. The heating unit 32 attached to the outer wall surface 20C on the grip 5 side is protected by the grip 5 and avoid contact with the ground. This prevents damage to the heating units 32.

[0021] Although heating unit 32 is a heating plate made of steel plate in the present embodiment, the present invention is not limited to this. Heating unit 32 may also be a flexible surface heating element composed of a flexible electric heater and a sheet that encases the electric heater. The sheet is, for example, a heat-resistant fibrous cloth or a resin film. In this case, heating unit 32 may be attached to at least one of outer wall surfaces 20A, 20B, and 20C of bucket 2, or may be provided so as to cover the outside of bucket 2. This allows heating unit 32 to be easily provided even if outer wall surfaces 20A, 20B, and 20C of bucket 2 are not flat.

[0022] The heating unit 32 is preferably attached to at least the outer wall surface 20A facing the wheels 4. By attaching the heating unit 32 to the outer wall surface 20A facing the wheels 4, the heating unit 32 is protected by the wheels 4, and contact with the ground can be minimized.

[0023] Although the handcart 1 is exemplified as a wheelbarrow having one wheelbarrow with one wheel 4, the present invention is not limited to this and the handcart 1 may have a plurality of wheels 4.

[0024] (Embodiment 2) Fig. 3 is a perspective view showing a second embodiment of the handcart 1. In Fig. 3, the same parts as in Fig. 1 are given the same reference numerals, and the description thereof will be omitted. In the second embodiment, the heating unit 32 and the rechargeable battery 131 are configured separately. The heating unit 32 does not have the battery 131 built in.

[0025] The battery 131 is a secondary battery, and examples thereof include a lithium ion secondary battery, a lead storage battery, and a nickel-metal hydride secondary battery. The battery 131 is stored in a storage section 33 welded to the frame 9. The battery 131 and the electric heater of the heating section 32 are connected by wiring 34. In this case, although not shown in the figure, a switch for turning the power on and off can be provided in the storage section 33. The storage section 33 is not limited to the location shown in the figure, and may be provided, for example, between the handle frame 10 and the second reinforcing frame 12. Furthermore, the battery 131 may be attached not in the storage section 33, but by providing a flange (not shown) on the outer casing of the battery 131 and bolting it to any position on the handcart 1.

[0026] [3. Effects, etc.] At a work site where gusset asphalt paving is carried out, a vehicle such as a cooker truck is used to store and transport the gusset asphalt mixture, although this is not shown in the drawings. The gusset asphalt mixture is poured from the tank of the cooker truck into the bucket 2 of the handcart 1. The handcart 1 is then moved and the gusset asphalt mixture is transported to the construction site. The gusset asphalt mixture is applied by being poured into the construction site, so compaction with a roller or the like is not required. In this case, stone powder is scattered into the bucket as an inhibitor to prevent the gusset asphalt mixture from sticking to the bucket. A bucket for storing stone powder is placed on the cooker truck. Guss asphalt mixtures are highly fluid at high temperatures, and when cooled, their fluidity decreases or they harden upon cooling.

[0027] In this embodiment, the bucket 2 that loads the goose asphalt mixture is heated by the heating unit 32, so the temperature of the goose asphalt mixture can be kept high. Therefore, the goose asphalt mixture can be transported while maintaining its fluidity. Therefore, the goose asphalt mixture is less likely to adhere to the bucket, so the amount of stone powder scattered onto the bucket can be reduced, and the adhesion of the goose asphalt mixture to the construction surface can be improved.

[0028] [4. Effects, etc.] As described above, the handcart 1 in this embodiment has a bucket 2 for loading an object to be transported, wheels 4 at the front of the bucket 2, a handheld grip 5 at the rear, and leg frames 9 on the sides, and of the outer wall surfaces 20A, 20B, and 20C of the bucket 2, at least outer wall surface 20A facing the wheels 4 is provided with a heating section 32 having an electric heater connected to a rechargeable battery 31. This allows the bucket 2 to be heated by the heating section 32. Therefore, the transported object can be heated.

[0029] In addition, the bucket 2 is provided with a heating portion 32 on all of its outer wall surfaces 20A, 20B, and 20C. This allows the bucket 2 to be heated efficiently.

[0030] In addition, bucket 2 is loaded with gusset asphalt mixture. This allows the gusset asphalt mixture, whose fluidity decreases when the temperature drops, to be transported while maintaining its temperature.

[0031] The heating section 32 is attached to the outer wall surface 20A of the bucket 2 using a magnet. This makes it easier to remove the heating unit 32. For example, the heating unit 32 may be attached to the bucket 2, the bucket 2 may be heated in advance, the heating unit 32 may be removed, and the transported object may be loaded thereon.

[0032] The heating section 32 is configured as a heating plate made of steel, and the magnets are attached to the wall surface of the heating plate. This improves the durability of the heating unit 32.

[0033] (Other embodiments) Although the heating unit 32 is a heating plate made of a steel plate, it is not limited to this. The heating unit 32 may be a flexible surface heating element composed of a flexible electric heater and a sheet that contains the electric heater.

[0034] The sheet is, for example, a heat-resistant fibrous cloth or a resin film. In this case, heating unit 32 may be provided so as to cover the outer peripheral surface of bucket 2. This makes it possible to easily provide heating unit 32 even if outer wall surfaces 20A, 20B, 20C of bucket 2 are not flat.

[0035] The shape of the heating section 32 is not limited to the shape shown in Figures 1-3 and can be changed as desired depending on the shape of the outer wall surfaces 20A, 20B, and 20C of the bucket 2. All of the heating sections 32 may have the same shape, such as a rectangular shape. This allows the heating section 32 to be used for each of the outer walls 20A, 20B, and 20C.

[0036] In the above embodiments, the article carried by the handcart 1 is described as a gusset asphalt mixture, but this is not limiting. The present invention is applicable to all handcarts 1 that require the insulation or heating of articles carried. [Explanation of symbols]

[0037] 1. Wheelbarrow 2 buckets 2A Edge 3 Support Frame 4 wheels 4A Axle 5 Grip 6 Tire frame 7 Reinforcement frame 8 Bracket 9 Leg frame 10 Handle frame 11 First reinforcement frame 12 Second reinforcement frame 13 Third reinforcement frame 20A Exterior wall 20B External wall surface 20C External wall surface 31, 131 battery 32 Heating section

Claims

1. A handcart having a bucket for carrying an object, wheels at the front of the bucket, a hand-held grip at the rear, and leg frames at the sides, a heating unit having an electric heater connected to a rechargeable battery, the heating unit being provided on at least the outer wall surface of the bucket that faces the wheels; Wheelbarrow.

2. The heating portion is provided on all outer wall surfaces of the bucket.

2. The pushcart of claim 1.

3. The heating unit is attached to the outer wall surface of the bucket using a magnet.

3. A pushcart according to claim 1 or 2.

4. The heating unit is configured as a heating plate made of a steel plate, and the magnet is attached to a wall surface of the heating plate.

4. The pushcart of claim 3.

5. The heating unit is composed of a flexible surface heating element.

2. The pushcart of claim 1.

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