JP3699167B2 - Power carrier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power vehicle.
[0002]
[Prior art]
Conventionally, as a form of a power vehicle, a body frame is horizontally mounted between a pair of left and right crawler type traveling parts, and a loading platform is provided on the front part of the body frame, while a driving part and a motor part are provided on the rear part. There is something.
[0003]
The pair of left and right traveling parts are each provided with a traveling frame extending in the front-rear direction, and a plurality of horizontal frames are horizontally spaced between the two traveling frames in the front-rear direction, and the body frame is mounted on the horizontal frame. It is installed.
[0004]
The vehicle body frame is formed of a front support frame that supports the loading platform, and a rear support frame that supports the operation unit and the motor unit, and the front support frame and the rear support frame are connected to each other at the ends. The frame is disposed close to the traveling frame in the vertical direction, and a recess is formed in the rear portion of the rear support frame to avoid buffering with the drive axle case disposed on the rear upper side of the traveling frame.
[0005]
[Problems to be solved by the invention]
However, in the above-described body frame of a power vehicle, since the front support frame and the rear support frame are divided into two parts, the body frame is enlarged to ensure rigidity and the body weight increases. In addition, there is a problem in that it requires labor in manufacturing to form a recess for avoiding interference with the drive axle case in the rear support frame.
[0006]
In addition, the vehicle body frame is disposed close to the traveling frame, and a uniform space is not formed between the frames, so that there is a problem in that earth and sand are easily clogged between the frames.
[0007]
[Means for Solving the Problems]
Therefore, in the present invention, in a power vehicle including a pair of left and right crawler type traveling units, a plurality of horizontal frames are horizontally mounted with a space in the front-rear direction between a pair of left and right traveling frames extending in the front-rear direction. A vehicle body frame formed by extending in the front-rear direction on the horizontal frame is placed in parallel with the traveling frame, and the rear end portion of the vehicle body frame is set to a position behind the rear end of the traveling portion. In the extended power vehicle, a fuel tank is placed on the rear part of the body frame, and a bonnet formed of a peripheral wall and a ceiling wall is placed so as to cover the periphery of the fuel tank. A part of the ceiling wall is composed of the ceiling wall of the fuel tank, the ceiling wall of the fuel tank is also used as a part of the ceiling wall of the bonnet, and is further inwardly stretched to the upper peripheral edge of the peripheral wall of the bonnet. The ceiling wall mounting projecting member formed in a shape, and there is provided St. power transportation vehicle, characterized in that attached detachably to the periphery of the ceiling wall of the fuel tank.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
A shown in FIG. 1 is a power vehicle according to the present invention. The power vehicle A has a vehicle body frame 2 horizontally mounted between a pair of left and right crawler-type traveling units 1, 1. A loading platform 3 is provided at the front of the vehicle, and an operation unit 4, a motor unit 5 and a mission unit 20 are provided at the rear. 33 is a dump cylinder.
[0011]
As shown in FIGS. 1 to 3, the traveling unit 1 has an idler wheel 7 attached to a front end portion of a traveling frame 6 extending in the front-rear direction via an idler wheel advancement / retraction adjuster 8 so that the advance / retreat position can be adjusted in the front-rear direction. The drive wheel 9 is attached to the rear end by the drive shaft 9a through the drive axle case 10, and the crawler belt 11 is wound between the wheels 7 and 9, and the upper rolling wheel 12 is attached to the upper halfway portion of the traveling frame 6. On the other hand, five lower rolling wheels 13 are attached to the lower end of the traveling frame 6 at intervals in the front-rear direction. 7a is an idler shaft.
[0012]
As shown in FIGS. 2 and 3, a front horizontal frame 14, a middle horizontal frame 15, and a rear horizontal frame 16 are provided at the front, middle, and rear between the pair of left and right traveling frames 6, 6. The vehicle body frame 2 is mounted on the frames 14, 15, 16, respectively.
[0013]
As shown in FIGS. 2 and 3, the vehicle body frame 2 extends between the front end portions of a pair of left and right front and rear extension frame forming bodies 17 and 17 that extend straight in the front and rear direction and are longer than the traveling frame 6. Next, a connecting horizontal pipe 18 extending in the left-right width direction is horizontally mounted, and loading platform pivot brackets 19 and 19 are projected forward and upward on the left and right sides of the connecting horizontal pipe 18, and the connecting horizontal pipe 18 A pair of left and right dump cylinder supports 21, 21 are installed between the midway part and the front horizontal frame 14, while the rear part of the pair of left and right front and rear extension frame forming bodies 17, 17 has a rectangular frame-like rear part in plan view. A support frame 22 is mounted, and step forming bodies 23 and 23 of the operation unit 4 and a battery housing case 24 are provided on the rear support frame 22. Reference numeral 25 denotes a load carrier, 26 denotes a suspension ring, 27 denotes a transmission unit receiver, and 28 denotes a body frame stay.
[0014]
Here, as shown in FIG. 2, the vehicle body frame 2 is integrally formed by extending a pair of left and right front and rear extension frame forming bodies 17 and 17 straight from the rear end of the traveling portion 1 to a rear position. The rigidity of the vehicle body frame 2 can be secured by simplifying the structure, and the weight of the vehicle body can be reduced.
[0015]
In addition, since the front and rear extension frame forming bodies 17 and 17 are installed in parallel with the traveling frames 6 and 6 and the lower surfaces of both the frame forming bodies 17 and 17 are disposed above the drive axle case 10. In addition, it is possible to form a uniform large space in the front-rear direction between the frame forming bodies 17 and 17 and the traveling frames 6 and 6, and to reliably prevent clogging of earth and sand in the space. .
[0016]
Further, as shown in FIG. 2 and FIG. 3, a horizontal frame 30 for receiving a platform is placed on the middle of the upper surface of the pair of left and right front and rear extension frame forming bodies 17, 17. Buffer rubber bodies 31, 31 are fixed by fixing pins 32, 32 respectively, and the lower end edges of the front and rear sides of the buffer rubber body 31 are protruded downward along the front and rear walls of the horizontal frame 30 for the platform. The anti-rotation protrusions 31a and 31b are formed.
[0017]
In this manner, the abutting frame 3a attached to the lower surface of the loading platform 3 is received by the upper surfaces of the cushioning rubber bodies 31, 31, and each cushioning rubber body 31 is placed along the front and rear walls of the lateral frame 30 for loading platform. The anti-rotation projecting pieces 31a and 31b formed so as to protrude downward prevent misalignment.
[0018]
In addition, since the horizontal frame 30 for loading platform is placed between the middle portions of the pair of left and right front and rear extension frame forming bodies 17, 17, the rigidity of the vehicle body frame 2 is also increased by the horizontal frame 30. .
[0019]
As shown in FIGS. 1 and 4, a cap-shaped bonnet 35 is mounted on the rear portion of the upper surface of the rear support frame 22, and the bonnet 35 is a horizontally long and polygonal peripheral wall 35a in the left-right width direction. The left-side ceiling wall 35b that closes the upper surface of the left side portion so as to be openable and closable, and the right-side ceiling wall 35c that closes the upper surface of the right side portion so as to be openable and closable.
[0020]
As shown in FIG. 4, the right ceiling wall 35c is formed so as to also serve as the ceiling wall of the fuel tank 36 placed on the rear support frame 22, and extends inwardly at the upper peripheral edge of the peripheral wall 35a. The peripheral edge of the right ceiling wall 35c is detachably attached to the formed ceiling wall mounting extension 35d with a mounting bolt 37, and the left ceiling wall 35b is also detachable with the mounting bolt 37 to the ceiling wall mounting extension 35d. Installed on. 36a is a fueling lid.
[0021]
Therefore, the fuel tank 36 can be easily attached / detached by removing the mounting bolt 37 without removing the bonnet 35, and the fuel tank capacity can be secured up to the upper surface of the bonnet 35. In addition, the left ceiling wall 35b of the bonnet 35 can be reduced, and the bracket for mounting the fuel tank is not required, thereby simplifying the structure and reducing the manufacturing cost. be able to.
[0022]
Further, as shown in FIGS. 5A and 5B, the idler wheel advancement / retraction adjusting body 8 is provided with an idler hawk guide cylinder 40 at the upper front portion of the traveling frame 6, and the idler hawk guide cylinder 40 is provided with the idler hawk guide cylinder 40. The idler fork 41 that supports the idler wheel 7 via the idler wheel support shaft 7a is slidably mounted back and forth along the upper surface of the traveling frame 6, while the adjustment bolt is attached to the rear end of the idler fork guide cylinder 40. A support plate 42 is stretched, an adjustment bolt 43 extending in the front-rear direction is attached to the support plate 42, and the tip of the adjustment bolt 43 is brought into contact with the rear end of the idler fork 41 in the idler fork guide cylinder 40. Touching. 44 is a nut.
[0023]
In this way, the idler fork 41 can be adjusted in the forward / backward direction by rotating the adjusting bolt 43 and moving it forward / backward in the forward / backward direction.
[0024]
Here, on the rear outer wall of the idler fork guide cylinder 40, as shown in FIGS. 5 (a) and 5 (b), an infiltration soil sand extraction window 45 is formed, and the infiltration soil sand extraction window 45 is elastic rubber. A lid 46 made of a material is detachably attached. 46a is an insertion recess formed at the periphery of the lid 46, and the lid 46 is attached by fitting the periphery of the infiltration soil sand extraction window 45 into the insertion recess 46a.
[0025]
As shown in FIG. 5 (b), the adjustment bolt support plate 42 is formed with an overhanging portion 42a projecting outward from the outer wall of the idler fork guide cylinder 40 at the left end. The overhang width t1 of the overhang portion 42a is formed larger than the overhang width t2 over which the lid 46 projects from the outer wall of the idler fork guide cylinder 40.
[0026]
In this way, when dirt or the like enters the idler hawk guide cylinder 40, the lid 46 is removed from the entry soil extraction window 45, and the entry dirt or the like can be easily removed from the entry soil extraction window 45. Thus, the advance / retreat position adjustment function of the idler wheel 7 by the idler wheel advance / retreat adjuster 8 can be ensured satisfactorily.
[0027]
The lid 46 can be protected from scattered mud by the overhanging portion 42a of the adjusting bolt support plate 42.
[0028]
FIGS. 6 (a) and 6 (b) are other examples of the idler wheel advance / retreat adjusting body 8, and a lid formed of a metallic material on the infiltration soil sand extraction window 45 formed in the idler fork guide cylinder 40. FIG. The body 46 is detachably attached by mounting bolts 47 and 47.
[0029]
The overhanging portion 42a of the adjusting bolt support plate 42 is formed in an overhanging state by an overhanging width t3 outward from the heads of the mounting bolts 47, 47.
[0030]
In this manner, the lid body 46 is removed from the infiltration soil sand extraction window 45 so that the infiltration earth sand can be easily extracted from the infiltration soil sand extraction window 45, and the lid body 46 and the mounting bolt 47 can be removed. The head can be protected from scattered mud by the overhanging portion 42a of the adjusting bolt support plate 42.
[0031]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0032]
In the present invention, a vehicle body frame formed by horizontally extending a plurality of horizontal frames between a pair of left and right traveling frames extending in the front-rear direction and spaced in the front-rear direction and extending in the front-rear direction on the horizontal frame is described above. The vehicle body frame is mounted in parallel with the traveling frame, and the rear end of the vehicle body frame is extended to a rear position from the rear end of the traveling unit, so that the rigidity of the vehicle body frame is secured by simplifying the structure. It is possible to reduce the weight of the vehicle body, and the space formed between the vehicle body frame and the traveling frame arranged in parallel vertically is a large space that is uniform in the front-rear direction. It is possible to reliably prevent clogging.
[0033]
Further, a fuel tank is placed on the rear part of the vehicle body frame, a bonnet formed of a peripheral wall and a ceiling wall is placed so as to cover the periphery of the fuel tank, and a part of the ceiling wall of the bonnet is placed. The ceiling wall of the fuel tank is used as a part of the ceiling wall of the bonnet, and the ceiling wall of the fuel tank is further extended inwardly at the upper peripheral edge of the peripheral wall of the bonnet. Since the peripheral part of the ceiling wall of the fuel tank is detachably attached to the overhanging body, the fuel tank can be easily attached and detached without removing the bonnet, and the fuel tank capacity is ensured up to the upper surface of the bonnet. The fuel tank capacity can be increased, and the ceiling wall of the bonnet can be reduced, and the bracket for mounting the fuel tank is not required. To, can be reduced of simplification of the structure and manufacturing costs.
[Brief description of the drawings]
FIG. 1 is a side view of a power vehicle according to the present invention.
FIG. 2 is an explanatory side view of a vehicle body frame.
FIG. 3 is a plan view of the vehicle body frame.
FIG. 4 is a perspective view of a bonnet.
FIGS. 5A and 5B are a side view and a rear view of the idler wheel advancement / retraction adjustment body.
FIG. 6 is a side view and a rear view of an idler wheel advancement / retraction adjustment body as another embodiment.
[Explanation of symbols]
A Power vehicle 1 Traveling part 2 Body frame 3 Loading platform 4 Driving part 5 Motor part

Claims (1)

In a power vehicle having a pair of left and right crawler type traveling units, a plurality of horizontal frames are horizontally spaced between a pair of left and right traveling frames extending in the front-rear direction, on the horizontal frame. A power carrier vehicle in which a vehicle body frame formed by extending in the front-rear direction is mounted parallel to the traveling frame and the rear end portion of the vehicle body frame is extended to a rear position from the rear end of the traveling portion. In
A fuel tank is placed on the rear part of the vehicle body frame, a bonnet formed of a peripheral wall and a ceiling wall is placed so as to cover the periphery of the fuel tank, and a part of the ceiling wall of the bonnet is placed in the fuel tank The ceiling wall of the fuel tank is also used as a part of the ceiling wall of the bonnet , and is further extended inwardly to the upper peripheral edge of the peripheral wall of the bonnet. In addition, the power vehicle has a peripheral edge of the ceiling wall of the fuel tank detachably attached .

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