Concrete leveling machine

Abstract

To provide a concrete leveling machine in which mounted components do not interfere with an external apparatus or the like and which can be made compact.SOLUTION: A concrete leveling machine includes a frame 2, a leveling member 3 attached to the frame 2, a handle 4 attached to the frame 2, and traveling wheels 5 attached to the frame 2. A component accommodating chamber 2a is provided inside the frame 2 and mounting components are accommodated in the component accommodating chamber 2a. The frame 2 has a base frame portion 20 and an upper frame portion 21 connected to the base frame portion 20 via a connecting portion 22. The frame can be displaced between a straight connected state in which the upper frame portion 21 is connected straight to the base frame portion 20, and a folded connected state in which the upper frame portion 21 is connected to the base frame portion 20 by folding it over.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a concrete leveling machine. [Background technology]

[0002] Various concrete levelers have been proposed to level the surface of poured concrete before it hardens. Self-propelled concrete levelers include a frame, a leveling member attached to the front end of the frame, a handle attached to the rear end of the frame, and running wheels attached to the frame, with mounted components such as a motor attached to the frame (see Patent Documents 1 to 3).

[0003] The concrete leveling machine moves on the concrete surface by rotating the running wheels, and during this self-propelling process, the leveling member moves while interfering with the convex parts of the concrete surface, thereby leveling the concrete surface. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-115648 [Patent Document 2] Japanese Utility Model Application Publication No. 58-134541 [Patent Document 3] Japanese Patent Application Publication No. 3-69768 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the conventional example, the mounted components, such as the motor, are attached to the outside of the frame. Therefore, if the mounted components interfere with external equipment, the external equipment may be damaged. In addition, there is a risk of a worker or other person coming into contact with the mounted components.

[0006] Furthermore, since concrete leveling machines are only used when leveling concrete, it is desirable that they be as compact as possible in terms of storage space and transportation.

[0007] Therefore, an object of the present invention is to provide a concrete leveling machine that can prevent problems caused by external equipment or workers interfering with the mounted parts and that can be made compact. [Means for solving the problem]

[0008] The present invention has been made in consideration of the above problems, and is characterized in that (1) it comprises a frame, a leveling member attached to the frame, a handle attached to the frame, and running wheels attached to the frame, a parts storage chamber is provided inside the frame, and mounted parts are stored in the parts storage chamber, and the frame has a base frame portion and an upper frame portion connected to the base frame portion via a connecting portion, and is configured to be displaceable between a straight connected state in which the upper frame portion is connected straight to the base frame portion, and a folded connected state in which the upper frame portion is connected to the base frame portion by folding it over.

[0009] (2) In the above (1), a battery is accommodated in the component storage chamber on the base frame side, and when the upper frame part is in the folded state, the battery can be removed from the opening of the component storage chamber on the base frame part side.

[0010] (3) In the above (1) or (2), when the frame is in the folded and connected state, the center of gravity is located on a vertical line passing through approximately the center of the base frame portion, and a hanging hook is provided on each end of the base frame portion.

[0011] (4) In either (1) or (2) above, the component storage chamber accommodates a motor drive circuit, a DC converter, the battery, and a motor in this order from the rear end of the frame toward the front end, with a gap between the components and the inner surface of the frame, and an intake port is provided at the frame on the front side of the battery and the frame on the front side of the DC converter, and an exhaust port is provided at the rear end of the motor drive circuit. [Effects of the Invention]

[0012] According to the present invention, since the mounted components are housed within the frame, the frame functions as a protector for the mounted components. This eliminates the risk of external equipment or workers interfering with the mounted components, and prevents problems caused by external equipment or workers interfering with the mounted components. By folding the upper frame portion into the base frame portion, the longitudinal dimension of the frame can be made compact. [Brief explanation of the drawings]

[0013] The drawings illustrate specific embodiments of the invention according to the present disclosure, including essential features of the invention as well as alternative and preferred embodiments. [Figure 1] FIG. 2 is a front view of the concrete leveling machine according to the embodiment. [Figure 2] FIG. 2 is a left side view of the concrete leveling machine according to the embodiment. [Figure 3] 1 shows the present embodiment, in which (a) is a perspective view of the concrete leveling machine (in a straight connection state in which the upper frame portion is connected straight to the base frame portion by the connecting portion), and (b) is an enlarged view of part B in (a). [Figure 4] FIG. 2 is an exploded perspective view of the concrete leveling machine according to the embodiment. [Figure 5] 1A is a perspective view of the main part of the connection portion of the frame as seen from the front side, and FIG. 1B is a perspective view of the main part of the connection portion of the frame as seen from the back side, showing the present embodiment. [Figure 6]This embodiment is shown in FIG. 1, where (a) is a perspective view of a concrete leveling machine in a folded and connected state in which the upper frame portion is folded and connected to the base frame portion by the connecting portion, and (b) is a perspective view of the main part of part D in (a). [Figure 7] FIG. 2 is a side view of the concrete leveling machine according to the present embodiment, in which the upper frame portion is folded onto the base frame portion. [Figure 8] FIG. 10 is a perspective view illustrating the embodiment and explaining the battery replacement operation. [Figure 9] 1A is a perspective view of a leveling member having a long width dimension, and FIG. 1B is a perspective view of a leveling member having a wave-shaped tip end surface, according to this embodiment. [Figure 10] 1A and 1B show the present embodiment, in which FIG. 1A is a plan view of the handle, and FIG. 1B is an enlarged view of the main part of FIG. [Figure 11] 1A and 1B show the present embodiment, in which FIG. 1A is a plan view of a modified handle, and FIG. 1B is an enlarged view of a main part of FIG. [Figure 12] FIG. 2 is a perspective view illustrating the ventilation structure according to the embodiment. [Figure 13] FIG. 2 is a perspective view illustrating the ventilation and drainage structure according to the present embodiment. [Figure 14] 1A is an enlarged side view of a main part showing the water-blocking structure in the folded state of the frame, and FIG. 1B is a side view illustrating the drainage structure in the folded state of the frame, according to this embodiment. [Figure 15] FIG. 1 is a perspective view of the concrete leveling machine with a wire rope sling attached thereto, illustrating the present embodiment. [Figure 16] FIG. 1 is an exploded perspective view showing the embodiment, in which a carriage is connected to a concrete leveling machine via a hitch ball and a hitch coupler. [Figure 17] FIG. 1 is an exploded perspective view showing the present embodiment, illustrating how Revive is connected to a concrete leveling machine. [Figure 18] FIG. 2 is a front view of the concrete leveling machine according to the embodiment. [Figure 19] FIG. 2 is a right side view of the concrete leveling machine according to the embodiment. [Figure 20]FIG. 2 is a left side view of the concrete leveling machine according to the embodiment. [Figure 21] FIG. 2 is a plan view of the concrete leveling machine according to the embodiment. [Figure 22] FIG. 2 is a rear view of the concrete leveling machine according to the embodiment. [Figure 23] FIG. 2 is a bottom view of the concrete leveling machine according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. In this example, a description of already known technologies will be omitted. Furthermore, the following examples illustrate devices and methods for embodying the technical idea of ​​the invention, and the technical idea of ​​the present invention is not limited to the following. The technical idea of ​​the present invention can be modified in various ways within the scope of the matters described in the claims. In particular, it should be noted that the drawings are schematic and may differ from the actual product.

[0015] (Overall structure of the concrete leveling machine) As shown in Figures 1 to 3, the concrete leveling machine 1 comprises a long, straight frame 2, a leveling member 3 attached to the front end of the frame 2, a handle 4 attached to the rear end of the frame 2, and a pair of left and right running wheels 5 attached to the middle of the frame 2. The names of the front and rear ends of the frame 2 refer to the positions when viewing the frame 2 from the position of the operator operating the machine, or in other words, the positions of the frame 2 relative to the forward direction of the concrete leveling machine 1.

[0016] (frame) As shown in Figures 4 and 5, the frame 2 is a frame body with a rectangular cross section, and a component housing chamber 2a is provided inside the frame 2. This component housing chamber 2a houses all the mounted components except for the operation unit described below. Details of the mounted components will be described below.

[0017] The frame 2 has a base frame portion 20 and an upper frame portion 21 connected to the base frame portion 20 via a connecting portion 22. The base frame portion 20 and the upper frame portion 21 are both formed from hollow square pipes made of metal (for example, aluminum) of the same size. The upper frame portion 21 is provided so as to be displaceable between a straight connected state (FIGS. 3 and 4) in which it is connected to the base frame portion 20 in a straight manner, and a folded connected state (FIGS. 6 and 7) in which it is connected to the base frame portion 20 by folding over it.

[0018] As shown in detail in Figures 5 and 6(b), the connecting portion 22 is composed of a pair of rotation support brackets 22a provided on both side surfaces of the upper frame portion 21 and a pair of support receiving brackets 22b provided on both side surfaces of the base frame portion 20.

[0019] In the straight connection state, the end faces of the base frame portion 20 and the upper frame portion 21 are butted together to form a straight shape. In the straight connection state, the first locking portion 23 is locked to the first locked portion 24 (see FIG. 5(b)). This ensures that the straight connection state is maintained even if an external force or vibration that tries to rotate the upper frame portion 21 is applied.

[0020] To change from the straight connection state to the folded connection state, the first locking portion 23 is unlocked from the first locked portion 24. Then, the upper frame portion 21 is rotated upward (in the R direction in FIG. 7). Then, midway through the rotation, the upper frame portion 21 rotates due to its own weight to the position of the folded connection state.

[0021] As shown in Figure 6, when the frame 2 is in the folded and connected state, both ends of the base frame portion 20 are exposed to the outside, and hanging hooks 34 are provided on both exposed ends. The hanging hooks 34 on the tip side of the base frame portion 20 are integrally provided on the leveling member fixing portion 27. In the folded and connected state, the center of gravity of the concrete leveling machine 1 is configured to be located on a vertical line that passes through approximately the center of the base frame portion 20.

[0022] (parts storage room, stored parts) As shown in Figure 4 and other figures, the component housing chamber 2a houses a motor drive circuit 11, a DC converter 12, a battery 13, and a motor 14 with a speed reducer 14a in series in this order from the rear end to the front end of the frame 2. By housing these components in series, the frame 2 can be made slimmer. Various electric wires (not shown) are also housed in the component housing chamber 2a. In other words, the component housing chamber 2a houses all the mounted components except for the operating unit described below.

[0023] The component housing chamber 2a on the upper frame portion 21 side houses a motor drive circuit 11 and a DC converter 12. The base frame portion 20 houses a battery 13 and a motor 14 with a speed reducer 14a.

[0024] When the upper frame portion 21 is folded, the battery 13 is exposed from the opening of the component housing chamber 2a on the base frame portion 20 side (see FIG. 6), and the battery 13 can be removed.

[0025] 8, when the battery 13 is housed in the base frame portion 20, it is locked by the second lock portion 25, and can be removed by releasing this second lock portion 25. When a new battery 13 is inserted into the base frame portion 20 to the fully inserted position, the second lock portion 25 moves to the locked position, and the battery 13 is locked inside the base frame portion 20.

[0026] The rotational force of the motor 14 is transmitted to the pair of running wheels 5 via a speed reduction mechanism 14a and a drive belt (not shown) or the like.

[0027] The various electric wires (not shown) are electric wires for the control panel (not shown), electric wires for the battery, and electric wires for the motor. The electric wires for the control panel (not shown) are routed from inside the upper frame portion 21 through the inside of the handle 4 and are led to the various operating parts of the handle 4. The electric wires for the battery and the electric wires for the motor are routed through both the upper frame portion 21 and the base frame portion 20. The electric wires for the battery and the electric wires for the motor are sheathed in a corrugated tube 17 (shown in FIG. 6(b)) at the routed portion between the upper frame portion 21 and the base frame portion 20. This is to prevent damage, the adhesion of water droplets, etc.

[0028] (Leveling material) As shown in FIG. 3 and other figures, the leveling member 3 is attached to the frame 2 via the leveling member fixing portion 27 of the base frame portion 20. In this embodiment, the tip surface of the leveling member 3 that contacts the concrete surface is formed in a straight shape along the width direction. The dimension of the leveling member 3 in the width direction is L1. The leveling member 3 is detachable from the leveling member fixing portion 27 and can be replaced with leveling members of various sizes and shapes. For example, as shown in FIG. 9(a), the tip surface that contacts the concrete surface is straight along the width direction, but it can be replaced with a leveling member 3A with a longer dimension L2 in the width direction, or as shown in FIG. 9(b), the tip surface that contacts the concrete surface is formed in a corrugated shape along the width direction.

[0029] (handle) The handle 4 is attached to the rear end of the frame 2 via a handle support portion 4a. As shown in Figure 10, the handle 4 extends left and right from the handle support portion 4a and curves sharply from the tip of the extended portion before curving back toward the handle support portion 4a. The handle support portion 4a is configured so that the amount by which it protrudes from the rear end of the upper frame portion 21 can be adjusted. Therefore, the height position of the handle 4 can be adjusted to a height suitable for the height of the operator who will be holding the handle 4 immediately behind it.

[0030] An operating section consisting of a knob 41 for adjusting the speed, an emergency on / off button 42, and a rocker switch 43 for selecting forward or reverse is attached to the handle 4. The rocker switch 43 is attached in two locations. As shown in detail in Figure 10(b), the rocker switch 43 is a toggle type, with the center being the off position and the top and bottom being the on positions of the momentary contact. One on position selects forward, and the other on position selects reverse. When the operator operates the rocker switch 43 from the center off position to one on position and then releases his / her hand, the rocker switch 43 automatically returns to the center position. This selects forward. Similarly, operating the rocker switch 43 to the other on position selects reverse.

[0031] FIG. 11 shows a modified rocker switch 43A. This modified rocker switch 43A has a forward / reverse selection switch 43a and a trigger lever 43b. The forward / reverse selection switch 43a is of the trigger type, and once operated to either position, it remains in that position. As shown in detail in FIG. 11(b), the trigger lever 43b is turned on when the operator holds it together with the handle 4 and operates it toward themselves, and when the operator releases it, it returns to its original position by spring force or the like and turns off. The trigger lever 43b of this modified rocker switch 43A is attached in two places.

[0032] (Running wheels) The running wheels 5 are attached to the frame 2 by fixing their running wheel support parts 6 to the base frame part 20. In this embodiment, the running wheels 5 are tires, but they may be any wheels that rotate while in contact with the ground (including the concrete surface) and provide the concrete leveling machine 1 with a running force.

[0033] (Ventilation and drainage structure) Next, the ventilation and drainage structure of the concrete leveling machine 1 will be described with reference to Figures 12 to 14. An intake port (not shown) is provided in the base frame section 20 at the tip end side of the battery 13 housed in the base frame section 20, and at the tip end side of the DC converter 12. An exhaust port 29 is provided at the handle support section 4a on the rear end side of the motor drive circuit 11. A fine mesh guard (not specifically numbered) is provided at the exhaust port 29.

[0034] When the motor 14 is driven, the battery 13 and DC converter 12 heat up. This causes the surrounding air in the component housing chamber 2a to overheat, and because the overheated air is light, it rises through the gaps in the frame 2. This causes outside air to be drawn into the frame 2 through the air intakes (not shown). The air drawn into the frame 2 passes through the gaps around the battery 13 and DC converter 12, rises within the component housing chamber 2a, and in the process of rising, absorbs heat from the battery 13 and DC converter 12 and is exhausted to the outside through the exhaust port 29. This air circulation cools the battery 13 and DC converter 12 with the outside air.

[0035] 13 and 14, a shielding plate 30 that shields the entire component housing chamber 2a, leaving a small gap, is provided at the tip of the upper frame portion 21. This small gap forms a drainage groove 31 (shown in FIGS. 13 and 14(a)) between the shielding plate 30 and the inner surface of the upper frame portion 21. The drainage groove 31 is located on the bottom side when the frame 2 is in the straight connected state (see FIG. 13), and is located on the top side when the frame 2 is in the folded connected state (see FIG. 14(a)).

[0036] As shown in Figure 13, when the frame 2 is in the straight connection state, it is expected that water will enter the component housing chamber 2a through the connection gap between the handle support portion 4a and the upper frame portion 21. The motor drive circuit 11 and DC converter 12 are housed in the component housing chamber 2a via a gap between the inner surface of the upper frame portion 21 and the component housing chamber 2a, so water flows down through the gap on the bottom side of the upper frame portion 21. The water that flows down flows further down the drain groove 31, beyond the position of the shielding plate 30, and is discharged to the outside through an air intake port (not shown). Therefore, when the frame 2 is in the straight connection state, the housed components such as the motor drive circuit 11 and DC converter 12 will not be damaged by water.

[0037] 14, when the frame 2 is in the folded and connected state, the shielding plate 30 at the tip end of the upper frame portion 21 is exposed to the outside at an angle upward. However, the upper frame portion 21 acts as a cover for the drain groove 31, preventing water from entering the frame 2 through the drain groove 31.

[0038] On the other hand, because the opening at the rear end of the base frame portion 20 faces diagonally upward and is exposed to the outside, water can enter the component housing chamber 2a of the base frame portion 20 through this opening. The water that enters the component housing chamber 2a falls through the gap between the battery 13 and the inner surface of the base frame portion 20, but because of its own weight, it collects in the gap on the bottom side of the base frame portion 20, flows down the gap on the bottom side, and is discharged to the outside through an air intake port (not shown) in the base frame portion 20. The battery 13 has a sufficiently waterproof structure, so there is no problem even if it gets wet. Therefore, when the frame 2 is in the folded and connected state, the housed components such as the motor drive circuit 11, DC converter 12, battery 13, and motor 14 will not be damaged by water.

[0039] (Leveling work) Next, we will explain the leveling work using the concrete leveler 1. The concrete leveler 1 is assumed to be in a state where the tip surface of the leveling member 3 is in contact with the ground. The worker is positioned at the rear of the concrete leveler 1, grips the handle 4, and moves the position of the handle 4 downward. This causes the tip side of the frame 2 to move upward, with the running wheel 5 as the rotation fulcrum, and the leveling member 3, which was in contact with the ground, is lifted upward. By maintaining this state, the worker can rotate the running wheel 5 with the driving force of the motor 14, and move the concrete leveler 1 forward or backward.

[0040] When the worker moves the concrete leveling machine 1 to the surface of the poured concrete before it hardens, he or she displaces the handle 4 upward, lowering the tip of the leveling member 3 to the leveling level of the concrete surface. While maintaining this position, the worker uses the driving force of the motor 14 to move the concrete leveling machine 1 over the concrete surface. The leveling member 3 then moves over the concrete surface while interfering with the convex parts of the concrete surface, leveling it so that the unevenness of the concrete surface is eliminated.

[0041] (Sling work) Next, we will explain the slinging work performed when transporting the concrete leveling machine 1. First, the concrete leveling machine 1 is placed in the folded and connected state of the frame 2. Then, as shown in Figure 15, both ends of the base frame portion 20 are exposed to the outside. The forked ends of a wire rope 35 of a crane or the like are hung on the lifting hooks 34 at both ends of the base frame portion 20. This completes the slinging work. The lifted concrete leveling machine 1 is then transported by loading it onto a transport vehicle or the like.

[0042] Here, in the folded and connected state, the center of gravity of the concrete leveling machine 1 is located on a vertical line passing through approximately the center of the base frame section 20, so the concrete leveling machine 1 can be lifted without any unbalanced load acting on the crane, and lifting and lowering operations can be carried out safely and reliably.

[0043] (such as connecting a trolley) As shown in Figure 16, a dolly 52 can also be towed using the leveling and fixing part 27 provided at the tip of the frame 2. That is, a hitch ball 50 is attached to the leveling and fixing part 27, and a hitch coupler 51 is connected to this hitch ball 50 so that it can swing freely. Then, the dolly 52 can be fixed to the hitch coupler 51.

[0044] As shown in FIG. 17, a reviver 54 that vibrates up and down may be connected to the leveling and fixing part 27 provided at the tip of the frame 2.

[0045] (Effects of the embodiment) As described above, the concrete leveling machine 1 comprises a long, straight frame 2, a leveling member 3 attached to the front end of the frame 2, a handle 4 attached to the rear end of the frame 2, and running wheels 5 attached to the middle position of the frame 2. A parts storage chamber 2a is provided inside the frame 2, and parts are stored in the parts storage chamber 2a. The frame 2 has a base frame portion 20 and an upper frame portion 21 connected to the base frame portion 20 via a connecting portion 22, and is capable of being displaced between a straight connected state in which the upper frame portion 21 is connected to the base frame portion 20 in a straight manner, and a folded connected state in which the upper frame portion 21 is connected to the base frame portion 20 in a folded manner.

[0046] Therefore, since the mounted components are housed within the frame 2, the frame 2 functions as a protector for the mounted components. This eliminates the risk of external equipment or workers interfering with the mounted components, preventing malfunctions caused by external equipment or workers interfering with the mounted components. By folding the upper frame portion 21 into the base frame portion 20, the longitudinal dimension of the slender frame 2 can be made compact. This makes it convenient to store, transport, etc. the concrete leveling machine 1.

[0047] The battery 13 is accommodated in the component storage chamber 2a on the base frame portion 20 side, and when the upper frame portion 21 is in the folded state, the battery 13 can be removed from the opening of the component storage chamber 2a on the base frame portion 20 side.

[0048] Therefore, the folded state of the upper frame portion 21 simplifies the configuration by realizing compactness of the frame 2 and also enabling replacement of the battery 13. Furthermore, by learning how to fold the upper frame portion 21, the operator can learn both the operation of compacting the frame 2 and the operation of replacing the battery, which is convenient to use.

[0049] The component storage chamber 2a accommodates the motor drive circuit 11, DC converter 12, battery 13, and motor 14 in this order from the rear end of the frame 2 toward the tip end, with a gap between them and the inner surface of the frame 2. An air intake port (not shown) is provided at the position of the frame 2 on the tip side of the battery 13 and on the tip side of the DC converter 12, and an exhaust port 29 is provided at the rear end of the motor drive circuit 11.

[0050] Therefore, as described above, the air that enters the frame 2 from each air intake port (not shown) is heated by the heat of the battery 13 and DC converter 12, and the heated air rises through the gap between the battery 13 and DC converter 12 in the frame 2 and the inner surface of the frame 2, absorbing the heat of the battery 13 and DC converter 12 during this rising process and being exhausted to the outside through the exhaust port 29. In this way, the battery 13 and DC converter 12 are cooled, and an excessive rise in temperature of the battery 13 and DC converter 12 can be suppressed.

[0051] In the folded and connected state, the center of gravity of the concrete leveling machine 1 is located on a vertical line passing through approximately the center of the base frame portion 20, and a lifting hook 34 is provided on each end of the base frame portion 20. Therefore, as described above, the wire rope 35 of a crane or the like can be sling-mounted using the two lifting hooks 34. Furthermore, when the concrete leveling machine 1 is lifted, no unbalanced load acts on the crane or the like, so the concrete leveling machine 1 can be hoisted and lowered stably and reliably, and the concrete leveling machine 1 can be easily transported. Moreover, the concrete leveling machine 1 can be transported in a compact form.

[0052] In the above embodiment, the upper frame portion 21 is configured to be in the folding and connected state by rotating toward the upper surface of the base frame portion 20, but it may also be configured to rotate toward the side surface of the base frame portion 20. However, in the above embodiment, the handle 4 interferes with the base frame portion 20, so some ingenuity is required, such as changing the position of the handle 4.

[0053] In the above embodiment, the leveling member 3 does not vibrate, but it may be configured to vibrate, as in the case of Revive 54 shown in Fig. 17. For example, a vibration generator may be fixed to the center of the top surface of the leveling member 3 so that the leveling member 3 vibrates at a low frequency of about 50 Hz. It may also be configured to perform a leveling motion other than vibration. The leveling member 3 may be trowel-shaped, blade-shaped, or the like.

[0054] In the above embodiment, the running wheels 5 are tires, but any other configuration may be used as long as they are capable of transmitting rotational force to the concrete surface, and for example, caterpillars may also be used.

[0055] In the above embodiment, the concrete leveling machine 1 is used to level the surface of concrete, but it can also be used to level the surface of mortar, etc.

[0056] Although each embodiment has been described in detail above, it is not limited to a specific embodiment, and various modifications and changes are possible within the scope of the claims. It is also possible to combine all or a plurality of components of the above-described embodiments. [Explanation of symbols]

[0057] 1 Concrete leveller 2 frames 3, 3A, 3B Leveling material 4 Handle 5 Running wheels 11 Motor drive circuit 12 DC converter 13 Battery 14 Motor 20 Base frame part 21 Upper frame section 22 Connecting part 29 Exhaust port 34 Hanging hook

Claims

1. A vehicle includes a frame, a leveling member attached to the frame, a handle attached to the frame, and a running wheel attached to the frame, A component receiving chamber is provided inside the frame, and components are received in the component receiving chamber. The frame has a base frame portion and an upper frame portion connected to the base frame portion via a connecting portion, and is configured to be displaceable between a straight connection state in which the upper frame portion is connected straight to the base frame portion and a folded connection state in which the upper frame portion is connected to the base frame portion by folding it over.

2. 2. The concrete leveling machine according to claim 1, wherein a battery is accommodated in the parts storage chamber on the base frame portion side, and when the upper frame portion is in the folded state, the battery can be removed from the opening of the parts storage chamber on the base frame portion side.

3. When the frame is in a folded and connected state, the center of gravity is located on a vertical line passing through approximately the center of the base frame portion, 3. The concrete leveling machine according to claim 1, wherein a hanging hook is provided on each end of the base frame portion.

4. The component housing chamber houses a motor drive circuit, a DC converter, the battery, and a motor in this order from the rear end side to the front end side of the frame, with a gap between the component housing chamber and the inner surface of the frame, 3. The concrete leveling machine according to claim 1, wherein an intake port is provided at the portion of the frame on the tip side of the battery and the portion of the frame on the tip side of the DC converter, and an exhaust port is provided at the rear end side of the motor drive circuit.

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