JPH04228325A - Self-travelling working vehicle - Google Patents

Abstract

PURPOSE:To facilitate loading/unloading and enable stable loading without the restriction of load length in addition to providing the power source of various work tools required for small-scale work. CONSTITUTION:An engine 9, a clutch 10, a transmission case 11, a generator 13, and the like are disposed between the frames 4, 4 of a right and a left travel gears 1, 1, and a flat base plate 2 is provided at the upper parts of the frames 4, 4. A machine body is provided with power take-off means such as a PTO shaft 14 and a plug socket 22 so as to be the power source of the various work tools.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention utilizes the power of a self-propelled vehicle's driving engine to extract electrical power and mechanical rotational power to operate a working tool carried with the vehicle at a desired location. This relates to a work vehicle that can be used for transporting equipment.

0002

[Prior Art] Conventional machines used for mechanized construction work in civil engineering and construction work require a medium-sized or larger amount of work at the work site, and even if a dedicated machine suitable for the type of work is used, it is not profitable. For small-scale construction, manual construction has been the mainstream for economic reasons. However, in recent years, due to the shortage of labor for manual construction and the desire to shorten the construction period, even small-scale construction has had to switch to mechanized construction.
BACKGROUND OF THE INVENTION Convenient tools for various types of work have been developed in which the power source is supplied from another source.

[0003] Electricity, pneumatic pressure, hydraulic pressure, water pressure, mechanical rotational force, etc. are used as the power source for these work tools, and the power transmission medium generating device is used depending on the type of each work tool. generators, air compressors, hydraulic units,
Water pressure units or flexible shafts for direct transmission of rotational force are brought in, but most of these are dedicated engine-driven systems, and each is combined to perform one type of work. Furthermore, although it depends on the scale of the work and the size of the work tools, tools for small-scale work are often small, and therefore, it cannot be said that noise reduction during operation is always perfect.

[0004] Under the above-mentioned circumstances, the types of work in which power tools are used have recently become more diverse, and it has become commonplace for a single construction site to be unable to cope with only a single power transmission medium. In addition, in construction work where the work site is moved in a fluid manner, this is often extremely inconvenient. For example, assuming small-scale road maintenance and repair work, when a small amount of ready-mixed concrete is intermittently required for reloading curb stones, a small pot mixer is effective for on-site mixing, but the power required to drive it is effective. Most of the motors are electric motors, and a generator must also be brought to the site at the same time. Additionally, an electric welding machine is required for temporary welding of reinforcing bars and shoring, but it is rare for a steady power source to be available at a small-scale site, so a generator must be used. In addition to the examples above, other work tools that require electric power include concrete vibrators used when pouring concrete and core boring machines used to check the quality of poured concrete.

Furthermore, as another type of work, when removing concrete structures such as concrete pavers, asphalt pavers, or side gutters and catchment basins, hand-held breakers are used for work that does not require the introduction of a full-scale dedicated machine. However, in order to obtain compressed air to operate the breaker, a portable compressor must be brought to the site, and when multiple types of work are performed at a single construction site, it is necessary to bring in and occupy space for each type of machine. It is.

[0006]

[Problems to be Solved by the Invention] As mentioned above, even in small-scale construction, the types of work tools used are miscellaneous, unless the work is carried out manually using traditional pickaxes and shovels, and direct rotational power is used as the power source. In order to obtain the fluid pressure source, an electric power source generation means such as a generator to generate the fluid pressure, a hydraulic power unit, or a portable compressor is required, and depending on the type of tool, it is possible to obtain direct mechanical rotational power. Sometimes it is desirable. Previously, in such cases, a set of machinery, including each tool and a dedicated engine-driven power unit, was delivered to the construction site, but especially when the scale of the construction work was small, When moving from one site to another, it is extremely difficult to transport a large number of machines and secure space for installation.

In addition, in conventional self-propelled work vehicles, the engine section has a high ground clearance and the engine section protrudes above the base plate, which may obstruct the loading and unloading of cargo or make it difficult to carry long cargo stably. It cannot be loaded well. Therefore, a technical problem arose that needed to be solved in order to create a self-propelled work vehicle that could serve as a power source for various work tools needed for small-scale construction work and also had a flat base plate on the top of the machine. The purpose of the present invention is to solve this problem.

[0008]

[Means for Solving the Problems] The present invention has been proposed to achieve the above object, and comprises a base plate supported by a traveling device and having a flat upper surface over the entire length, to constitute the traveling device. The working vehicle is equipped with an engine serving as a power source for driving the traveling device and a traveling power transmission device in the space formed between the frame and the flat base plate, and is capable of moving forward and backward, stopping, and changing direction. An electric power generation means, a mechanical power extraction means, a power transmission means for connecting the power of the engine to the respective means, and an operation means capable of controlling the engine, the traveling device, and the power transmission means are provided in the space. , a self-propelled work vehicle characterized in that it is provided without protruding upward from a flat base plate on the upper surface of the machine body, and a sprocket to which power is transmitted from a traveling power transmission device and an idler on both sides of a pair of left and right frames. A self-propelled work vehicle characterized in that a traveling device is constructed by attaching a rotatable driven wheel and wrapping a crawler between each sprocket and the driven wheel, an engine, a traveling power transmission device, and an electric power generation. A self-propelled working vehicle is characterized in that the engine parts such as the mechanical power extraction means and the mechanical power extraction means are arranged approximately horizontally, and the rotation center is a shaft protruding from the center of the side of the machine, and the front and rear of the machine are rotated. A self-propelled work vehicle, characterized in that it is provided with a handle that can freely rotate in any direction, and an operation panel is provided on the handle that includes operation means that can control an engine, a traveling device, and a power transmission means. and a control panel equipped with operating means capable of controlling the engine, traveling device, and power transmission means, which can be attached or detached to any side of a predetermined position on the front or rear side of the fuselage, and on a flat surface of the upper surface of the fuselage. A self-propelled work vehicle is characterized in that it is mounted without protruding upward from a flat base plate, and a support is erected on the top of the flat base plate and is rotatable in the horizontal direction, and the support is mounted on the side of the support. The present invention provides a self-propelled work vehicle characterized by having an arm protruding from the arm and a load suspension device provided on the arm.

[0009]

[Function] When a work tool suitable for each type of work is required, the operation means for controlling the traveling device of the self-propelled work vehicle of the present invention is operated to perform the required work on a flat base plate. Load tools and other equipment and transport to the work site. After carrying the tool to the designated work site, the power input section of the necessary work tool and the power output section on the base plate are connected to perform the work. for example,
When using a work tool that requires a power source, operate the operating means of the clutch device connected to the electric power generation means, that is, the generator, to transmit the engine power to the generator, and then use the power tool that directly requires mechanical power. In this case, the operating means for extracting mechanical power is operated in accordance with the above operation. At this time, since a plurality of power extraction means are provided, it is possible to operate a plurality of power tools at the same time as long as it is within the capabilities of the engine and generator.

Furthermore, when the traveling device is equipped with a crawler, the movement of the machine can be ensured even on rough roads such as uneven or muddy ground at the work site. Furthermore, if a suspension device is provided by erecting a support on the base plate, even heavy loads or large working tools can be easily loaded and unloaded onto the base plate. In this way, various desired working tools can be easily carried into one machine, and various working tools can be used. The flight of the aircraft and the control of various power generation means can be operated remotely from any position in the front or rear of the aircraft, making it easy to pass through narrow approach roads without having to change direction of the aircraft when entering or exiting. , enabling safe driving.

[0011]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 4 show a first embodiment of a self-propelled work vehicle. In FIGS. 1 and 2, 1 is a crawler type traveling device, and 2 is a flat platform at the top of the machine body. A plate 3 is a hand-guided handle made of a lightweight and rigid material such as a steel pipe formed into a U shape, and 4 is a frame of the traveling device 1.

The open end of the handle 3 is pivotally connected to handle shafts 5, 5 protruding from substantially the center on both the left and right sides of the machine body, and the handle shaft 5 is used to move the machine forward or backward around the handle shaft 5. It can rotate approximately 180 degrees until it comes into contact with the front and rear stoppers 6 and 7. Further, the U-shaped bottom of the handle 3 is a part that the operator grips when operating the machine, and the height of the grip part can be adjusted and fixed in multiple stages according to the operator's physique or the loaded material. It is desirable to do so. On the outside of the U-shaped bottom of the handle 3, an operation panel 8 equipped with operation means to be described later is fixed.

On the other hand, an engine 9 is mounted in the space between the base plate 2 and the left and right frames 4, 4 provided on the lower surface thereof, and a running power transmission device consisting of a clutch 10 and a transmission case 11 is mounted in front of the engine 9. Connecting. mission case 11
One output shaft drives a generator 13, which is an electric power generation means, via a clutch 12, and the other output shaft is a PTO shaft 14, which is a mechanical power extraction means. This PTO
The shaft 14 is provided in a vertical direction and is attached to the base plate 2 as shown in FIG.
Although the power is taken out from the center of the transmission case 11, it is also possible to change the structure of the transmission case 11 as necessary to provide a horizontal shaft or a plurality of PTOs.

The clutches 10 and 12 are connected to the engine 9.
The clutches 10 and 12 are equipped with different types of auxiliary devices, such as slip rings, rotary joints, cams, and release bearings, depending on the type of signal medium. . Although it is omitted in Fig. 1, if there is a work tool such as a grinder or a buff that uses direct rotational force on the PTO shaft 14, which is the mechanical power extraction means, a flexible shaft may be installed. A clutch device or the like may be additionally provided to connect or drive a work tool directly mounted.

FIG. 3 is a plan view showing an example of the arrangement of various operating means provided on the operation panel 8, and FIG. 4 is a cross-sectional view taken along the line AA in FIG. In Fig. 3, reference numerals 15 and 15 are operating devices for controlling the traveling device 1, and by operating them from the N position to the F or R position in the figure, the left and right crawler drive sprockets can be operated independently and simultaneously. Or, by rotating only one side forward and backward, the aircraft can move to the desired position and direction. 16 is an operating device for controlling the engine 9; 17 is an operating device that issues a command signal to the clutch 12 for the generator 13; and 18 is an operating device that issues a command signal to the clutch 10 provided between the engine 9 and the transmission case 11. It goes without saying that the number and arrangement of these operating devices can be increased or decreased as necessary.

The operating devices 15, 16, 17, 18 are as follows:
Although the partial shape may differ slightly depending on the shape of the control device of the device to be operated and the medium of the command signal, basically, as shown in the cross section of FIG. Lever shaft 2 passing through and having an operating arm 19 in the middle part
0, and levers 21, 21 attached to both ends of the operation panel 8 so that the lever shaft 20 can be rotated from either side of the front or back side of the operation panel 8. control operations for each device.

Further, electric power extraction means consisting of electrical outlets 22 as shown in FIG. 1 are provided at multiple locations on the side surface of the base plate 2, and on the top surface of the base plate 2, as shown in FIG. A plurality of embedded fasteners 23 for securing work tools and equipment loaded on the base plate 2, and a cover 24 for maintenance.
, 25, 26 are provided. The first embodiment of the present invention is related to the above configuration, and first, work tools suitable for various tasks, such as various electric tools, portable compressors, hydraulic power units, etc., are generated. Work tools operated by fluid pressure power, tools operated by PTO mechanical power, etc. are loaded on the base plate 2 of the machine along with the necessary equipment, secured with fasteners 23, and self-propelled to the work site. It is. At this time, by operating the levers of the operating devices 15, 15 for controlling the traveling gear on the operating panel 8 in combination with the F, R, or N positions, the aircraft can move forward or backward, stop, or It is natural that the direction can be changed, but as shown in FIG. 1, for example, when moving in the direction of arrow F, the handle 3 is rotated counterclockwise to tilt and moved in the direction of arrow R. At this time, the handlebar 3 is rotated clockwise to tilt it, and the height of the gripping portion of the handlebar 3 is appropriately adjusted to H1, H2, etc. according to the physique of the driver.

[0018] In this way, the operator can travel safely while directly viewing the direction in which the aircraft is moving. Further, if it is preferable for the operator to walk while checking the ground of the approach road and then drive the aircraft, the handle 3 may be set in the opposite direction. In any of the above cases, the levers 21 are provided on both sides of the operation panel 8, and no matter which direction the handle 3 is in, the levers of not only the operation device 15 but also the operation devices 16, 17, 18, etc. 21 is easy to operate.

Next, after arriving at a predetermined work site, the handle 3 is set in a direction that does not interfere with the work, and by operating the operating devices 16, 17, and 18, the PTO shaft 14, Work tools connected to the electric power extraction means 22 can be operated simultaneously to efficiently carry out construction work. 5 to 7 show a second embodiment, 27 is a flat base plate, and 28 is a frame provided under the base plate. A bottom plate frame 29 is fixed to the lower surface of this frame 28, and the bottom plate frame 29 has left and right side edges 29a, 29.
A is bent upward to improve mechanical strength. An engine 30 is mounted on a bottom plate frame 29 at a central position within the frame 28, a transmission case 31 serving as a traveling power transmission device is mounted on one end of the bottom plate frame 29, and the other end of the bottom plate frame 29 is mounted. An engine section 33 is constructed by mounting a generator 32, which is an electric power generating means, in the section. Since the lower part of the engine section 33 is covered by the bottom plate frame 29, it is protected from stones, mud, etc. on the ground even if the minimum ground clearance is small.

A two-stage pulley 35 is fitted to the output shaft 34 of the engine 30, and a V-belt 38 is stretched between the two-stage pulley 35 and a mission pulley 37 fitted to the input shaft 36 of the transmission case 31. At the same time, the power generation pulley 40 fitted to the rotating shaft 39 of the generator 32 and the two-stage pulley 35
A V-belt 41 is stretched between the two. Therefore, engine 3
Since the zero driving load is distributed evenly between the front and rear, the output shaft 34 of the engine is prevented from being biased to one side. A generator 32 is driven by the rotation of the engine 30, and is used as a power source for attached work tools such as a work light and an electric motor.

On the other hand, the rotation of the engine 30 is also transmitted to the input shaft 36 of the mission case 31, and rotates the left and right sprockets 42, 42 via a reduction gear (not shown) inside the mission case 31. The sprocket 42, 4
2 is pivotally connected to one end of the frame 28, and a crawler 4 is connected between the driven wheels 43, 43 pivotally connected to the other end of the frame 28.
4 and 44 are wound around each other to form a traveling device 45. still,
46 is a wheel provided between the sprocket 42 and the driven wheel 43.

Here, handles 47 and 48 are provided at both front and rear ends of the base plate 27, facing each other, and an operation panel 49 is fixedly installed in the center of the handles 47 and 48.
It controls the engine 30, the engine section 33 such as the transmission case 31, and the traveling device 45. Handle 47,4
8 are formed to be foldable, and can be stored by folding the handle 47 horizontally as shown by the arrow X in FIG. Therefore, for example, when moving the aircraft to the right in the same figure, one handle 47 is fixed in the upright position as shown by the solid line, and the other handle 48 is folded to move the base plate 27 toward the direction of travel. It is possible to secure a field of view and to easily load and unload cargo from three sides of the base plate 27. In addition, when moving the aircraft to the left in the figure, contrary to the above, one handle 47 is folded and stored under the base plate 27 as shown by the chain line, and the other handle 48 is raised up. Fixed in state.

FIGS. 8 and 9 show a third embodiment, which differs from the second embodiment described above in that it has an engine 30 and a generator 32.
The position of has been replaced. And engine pulley 51,
V belt 5 between mission pulley 37 and power generation pulley 40
2 to transmit the power of the engine 30. In such a configuration, the engine 30 is located at the end of the frame 28, and the cooling effect of the outside air is improved. Also, engine department 3
3, a hydraulic pump 53 may be added to the V-belt 52.
If it is also wound around the hydraulic pulley 54 to transmit the power of the engine 30, it is also possible to operate a hydraulic cylinder or the like that raises, lowers or tilts the base plate 27, for example.

FIGS. 10 and 11 show a fourth embodiment,
While the traveling device 1 in the first embodiment described above was a crawler type, the traveling device 55 is a wheel type, and the other configuration and operation are exactly the same as in the first embodiment. It is. Since this type of self-propelled work vehicle is used in work sites with narrow spaces and the approach path is often narrow, it is better for the width of the machine body to be small. Therefore, the traveling device 55 is preferably of the skid steering type, but depending on the application, it may be of any type such as front wheel steering, rear wheel steering, or front and rear wheel steering, as in ordinary construction machinery.

FIGS. 12 to 14 show a fifth embodiment,
Mounting legs 57, 57 provided on the left and right sides of the operation panel 56 are connected to the base plate 58.
It can be detachably attached to the front and rear surfaces of the body. When the operation panel 56 is attached to the base plate 58, command signals from each operation device are transmitted to the respective devices via the coupler 59. Therefore, even if the operation panel 56 is reattached to the side suitable for the traveling direction of the aircraft, safe and reliable driving operations can be performed. Further, the traveling device is not only a crawler type but also a wheel type.

FIGS. 15 and 16 show a sixth embodiment,
A support 61 is erected at one end of the base plate 60 so as to be freely rotatable in the horizontal direction, and an arm 62 is provided protruding from the upper end of the support 61. The arm 62 is rotatable up and down about a pivot portion 62a, and the tip portion 63 of a support piece 63 protruding from the lower part of the arm 62
When a is rotated to stand up, the arm 62 is fixed in an upwardly lifted state. Further, the distal end 62b of the arm 62 is formed to be extendable and retractable, and an electric hoist 64 is suspended from the distal end 62b as a suspension device. The electric hoist 64 is configured such that a motor (not shown) provided at the bottom of the support column 61 is rotated by operating a remote controller 65, so that a hook 66 can be moved up and down. Note that the rotation of the support column 61 in the horizontal direction and the vertical movement of the arm 62 can also be performed by driving a motor.

When loading a heavy load onto the base plate 60, the column 61 is rotated and the tip end 62b of the arm is slid to load the load on the side of the base plate 60 (see FIG. 6. Move the hook 66 to the upper position (not shown). Next, operate the remote controller 65 to open the hook 66.
The hook 66 is lowered to suspend the load, and then the hook 66 is raised to lift the load. Then, the support 61 is rotated and the tip end 62b of the arm is slid to move the load to an appropriate position on the base plate 60, and then the hook 66 is lowered to place the load on the base plate 60. .

On the other hand, when a heavy load is to be unloaded from the base plate 60, the operation is reversed to that described above, thereby reducing the labor involved in loading and unloading the load. When loading and unloading tall cargo, if the tip 63a of the support piece mentioned above is raised up, the tip 63a of the arm
b is at a high position, and there is ample space between the load and the hook 66, allowing for smooth hanging work. The electric hoist 6
4 is operated by electric power generated by driving a generator 67, and the electric power of the generator 67 can be used as a power source for the electric hoist 64, as well as for example, electric tools, electric welding machines, etc.

FIG. 17 shows a seventh embodiment, in which searchlights 70, 70 are attached to a support 69 erected on a base plate 68. The searchlight 70 is powered by electric power supplied from a generator 71, and the vertical movement and left/right rotation of the searchlight 70 are also performed by motors 72 and 73.
The height of the column 69 is also adjusted by expanding and contracting the height of the column 69 using the motor 74. Further, reference numeral 75 is a work lamp that illuminates the feet or hands during work.By adjusting the bending of the flexible pipe 76, the work lamp 75 can be set at any position, and when loading and unloading cargo, it is possible to set the work lamp 75 at any position. It is fixed to the support 69 as shown by the chain line. Furthermore, a detachable remote controller 77 is attached to the support column 69, and the remote controller 77 is operated to adjust the illuminance, direction, and height of each light source, and to control the start and stop of the aircraft.

In the sixth and seventh embodiments, since the generator 67 or 71 is retrofitted to the rear of the base plate 60 or 68, the ventilation of the generator 67 or 71 is ensured and the performance and performance are improved. It can prevent the lifespan from decreasing. In addition, the size of the aircraft body can be reduced, and in particular, the ground contact length of the crawler can be shortened, thereby making it possible to downsize while maintaining steering performance. And generator 67
Alternatively, since the attachment and detachment of 71 is easy, the assembly work can be simplified. Furthermore, it is possible to mount any electrical equipment in addition to the projector.

FIG. 18 shows an eighth embodiment, in which a hydraulic pump 79 is provided at the rear of the base plate 78 in place of the generator 67 or 71 of the sixth and seventh embodiments, and a hydraulic pump 79 is provided at the front of the base plate 78. A drilling rig 80 is attached. The hydraulic pump 79 is rotated by the engine 81 and pumps high pressure oil to each hydraulic cylinder 82, 83, 8.
4, 85. Then, an operating lever 86 erected at the rear of the base plate 78 is rotated back and forth and left and right to operate the boom 87 and bucket 88 of the excavation device 80 to perform excavation work. In addition, 89 in the figure is an arm guard, 90 is a lever guard,
91 is a foot step, 92 is a seat, and 93 is a rear step that can be raised and lowered.

It should be noted that the present invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that the present invention extends to such modifications.

[0033]

[Effects of the Invention] As detailed in the above embodiments, the present invention has the following features:
When applied to construction work involving multiple types of mechanical construction work, one machine can simultaneously use one or more of electric power, fluid pressure power, and mechanical power, and the type of work tool used will also be expanded. Moreover, there is no need to arrange and transport a dedicated machine for each different power source as in the past, and this machine is economical as it can run on its own and only requires a minimum amount of space. This is especially effective for mobile construction.

[0034] Furthermore, the top surface of the aircraft is a flat base plate, which makes it easy to load and unload cargo, and allows for stable loading of cargo, allowing for carrying various work tools to the site and securing them with clasps. It can be operated while the Furthermore, by providing an operation panel for controlling the aircraft's running or the engine section on a handle that can be freely rotated in the longitudinal direction of the aircraft, or removably installed on any side of the front or rear of the aircraft. , the operator can be positioned on the side suitable for the direction of movement of the aircraft, and can perform safe and reliable driving operations.

[0035] Furthermore, by erecting supports on a flat base plate and providing a suspension device, the labor involved in loading and unloading heavy cargo can be significantly reduced. In this way, the scope of use of the self-propelled work vehicle can be expanded, contributing to improved work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a side view of a self-propelled work vehicle showing a first embodiment of the present invention.

FIG. 2 is a plan view of a self-propelled work vehicle, showing a first embodiment of the present invention.

FIG. 3 is a plan view of essential parts of the operation panel, showing the first embodiment of the present invention.

FIG. 4 is a sectional view taken along the line AA in FIG. 3, showing the first embodiment of the present invention.

FIG. 5 is a side view of a self-propelled work vehicle showing a second embodiment of the present invention.

FIG. 6 is a partially cutaway plan view of a self-propelled work vehicle, showing a second embodiment of the present invention.

FIG. 7 is a partially cutaway front view of a self-propelled work vehicle, showing a second embodiment of the present invention.

FIG. 8 is a side view of a self-propelled work vehicle showing a third embodiment of the present invention.

FIG. 9 is a partially cutaway plan view of a self-propelled work vehicle, showing a third embodiment of the present invention.

FIG. 10 is a side view of a self-propelled work vehicle showing a fourth embodiment of the present invention.

FIG. 11 is a plan view of a self-propelled work vehicle showing a fourth embodiment of the present invention.

FIG. 12 is a side view of a self-propelled work vehicle showing a fifth embodiment of the present invention.

FIG. 13 is a plan view of a self-propelled work vehicle showing a fifth embodiment of the present invention.

FIG. 14 shows a fifth embodiment of the present invention, and is a plan view of essential parts of an operation panel.

FIG. 15 is a side view of a self-propelled work vehicle showing a sixth embodiment of the present invention.

FIG. 16 is a plan view of a self-propelled work vehicle showing a sixth embodiment of the present invention.

FIG. 17 is a perspective view of a self-propelled work vehicle showing a seventh embodiment of the present invention.

FIG. 18 is a side view of a self-propelled work vehicle showing an eighth embodiment of the present invention.

[Explanation of symbols]

Claims (6)

[Claims] Claim 1: A base plate supported by the traveling device and having a flat upper surface over the entire length is provided, and a space formed between the frame constituting the traveling device and the flat base plate is provided with a base plate for driving the traveling device. The work vehicle is equipped with an engine and a traveling power transmission device as a power source, and is capable of moving forward and backward, stopping, and changing direction, and has an electric power generation means in the space, a mechanical power extraction means, and the above-mentioned means in each of the means. It is characterized in that the power transmission means for connecting the power of the engine and the operation means for controlling the engine, the traveling device, and the power transmission means are provided without protruding upward from the flat base plate on the upper surface of the fuselage. A self-propelled work vehicle. [Claim 2] A sprocket that transmits power from a traveling power transmission device and a freely rotatable driven wheel are attached to both sides of a pair of left and right frames, and a crawler is wrapped between each sprocket and driven wheel to travel. The self-propelled work vehicle according to claim 1, further comprising a device. 3. The self-propelled work vehicle according to claim 1, wherein engine parts such as an engine, a traveling power transmission device, an electric power generation means, and a mechanical power extraction means are arranged substantially horizontally. 4. A handle is provided that is rotatable in the longitudinal direction of the machine body, with the shaft protruding from the approximate center of the side of the machine body as the center of rotation, and the engine, the traveling device, and the power transmission means are mounted on the handle. 2. The self-propelled work vehicle according to claim 1, further comprising an operation panel provided with operation means capable of controlling the vehicle. 5. An operation panel equipped with operating means capable of controlling the engine, the traveling device, and the power transmission means is removably attached to any predetermined position on the front or rear side of the aircraft body, and 2. The self-propelled work vehicle according to claim 1, wherein the self-propelled work vehicle is mounted without protruding upward from the flat base plate on the upper surface. [Claim 6] A support is erected on the top of the flat base plate so that it can rotate freely in the horizontal direction, an arm is provided protruding to the side of the support, and a load suspension device is provided on the arm. The self-propelled work vehicle according to claim 1, characterized in that: