JP2006341667A - Self-propelled working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-propelled working machine improved in work efficiency. <P>SOLUTION: The self-propelled working machine comprises a hood 25, a driver's seat 30, and a lifting step 37 assisting getting on/off to the driver's seat. A sub step 46 facilitating work on the hood 25 is provided on the lifting step 37. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention includes a bonnet, a driver's seat, and an elevating step that assists in getting on and off the driver's seat, for example, agricultural machines such as tractors and combines, construction machines such as backhoes and bull tosa, and forklifts, etc. It relates to all self-propelled working machines such as transporting machines.

  As shown in FIG. 9, the conventional tractor (self-propelled working machine) 1 is a four-wheeler having two front wheels 2 and two rear wheels 3, and a driver's seat 4 is provided above the rear wheel 3. A cabin 5 is provided. In the cabin 5, in addition to the driver's seat 4, a handle 6 and an operation pedal 7 such as an accelerator / brake are provided. The cabin 5 includes a roof 9, a windshield, a rear glass, and a glass-covered door 12 through which a driver enters and exits on the side of the driver's seat 4. On the other hand, an elevating step 8 for getting on and off the cabin 5 is provided below the cabin 5. A fuel filler cap 14 is provided on the bonnet 13 at the front of the tractor 1.

However, since the fuel filler cap 14 is provided on the hood 13 that is as high as the operator's line of sight in this way, when the fuel is supplied, the worker opens the fuel filler cap 14 using a platform or the like to supply fuel. There is a need. Therefore, it is necessary to separately prepare a step, etc., and there is a problem that the work efficiency at the time of refueling is lowered.
Accordingly, an object of the present invention is to provide a self-propelled working machine with improved work efficiency.

For this reason, the invention according to claim 1 is a self-propelled working machine comprising a bonnet, a driver's seat, and a lifting step that assists getting on and off the driver's seat.
The elevating step includes a sub-step for facilitating work on the bonnet.

  According to a second aspect of the present invention, in the self-propelled working machine according to the first aspect, the sub-step is provided so as to be movable in the horizontal direction from the elevation step.

  According to a third aspect of the present invention, in the self-propelled working machine according to the second aspect, the sub-step is provided so as to be rotatable in a horizontal direction from the lifting step.

  According to a fourth aspect of the present invention, in the self-propelled working machine according to the first aspect, the sub-step is provided to be openable and closable with respect to the upper surface of the elevating step.

  According to the first aspect of the present invention, in the self-propelled working machine including a bonnet, a driver's seat, and a lifting / lowering step that assists getting on / off the driver's seat, the sub-step for facilitating the work on the hood in the lifting / lowering step Therefore, when working on the bonnet, the worker can easily work using the sub-steps, so that it is possible to save the trouble of taking out the platform. Therefore, a self-propelled working machine with improved work efficiency can be provided.

  According to the second aspect of the present invention, since the sub-step is provided so as to be movable in the horizontal direction from the lifting / lowering step, the sub-step can be stored in the lifting / lowering step when not in use. Can be provided.

According to the third aspect of the invention, since the sub-step is provided so as to be rotatable in the horizontal direction from the lifting / lowering step, the sub-step can be stored in the lifting / lowering step when not in use, and a compact self-propelled working machine Can be provided.

According to the invention described in claim 4, since the sub-step is provided so as to be openable and closable with respect to the upper surface of the elevating step, the sub-step can be stored on the upper surface of the elevating step when not in use. A type work machine can be provided.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
A side view of a tractor as an example of the self-propelled working machine of the present invention is shown in FIG.
The tractor 21 of this example is provided with two front wheels 23 and two rear wheels 24 before and after the body frame 22, a bonnet 25 is formed above the front wheels 23, and an engine as a prime mover part is provided inside thereof. A fuel filler cap 26 is provided on the bonnet 25. Further, a cabin 27 is provided continuously at the rear part of the bonnet 25.

  In the cabin 27, an engine key, an accelerator pedal, an operation pedal 28 such as a clutch pedal and a brake pedal, a handle 29, a driver's seat 30, and the like are provided. The outer periphery of the cabin 27 includes a windshield 31, a rear glass 32, a door 33, a roof 34, and the like. In addition, an antenna 35 for receiving radio broadcasting or the like is attached to the left front portion of the cabin 27, and rearward confirmation mirrors 36 are provided on both front portions of the cabin 27.

Below the cabin 27, an elevating step 37 for a driver to get on and off the cabin 27 is fixedly attached to the vehicle body frame 22.
A fender 38 is provided below the rear portion of the cabin 27, and a reflection plate 39 is attached to the rear end of the fender 38.

  FIG. 2 shows an enlarged side view of the lifting step 37, and FIG. 3 shows a front view as seen from the arrow A in FIG. In the elevating step 37, the metal side plates 41A and 41B are arranged at a predetermined distance, and the top plate 42 and the steps 44 and 45 are fixed in order from the top so as to connect the side plates 41A and 41B. The top plate 42 is fixed to the vehicle body frame 22 via a stay (not shown). Then, a sub-step 46 is provided so as to overlap the lower surface of the lowermost step 45.

  FIG. 4 is a plan view taken in the direction of arrow B in FIG. Step 45 and sub-step 46 are each provided with a through-hole 47 in the upper left corner of the drawing, and bolt 48 is inserted into the through-hole 47 from above, and nut 49 is tightened from the lower surface side of sub-step 46 to sub-step to step 45. 46 is rotatably attached. Note that all the members constituting the lifting step 37 are made of cast iron. Steps 44 and 45 are configured by a plate having a rough slit, and water and mud on the driver's shoes fall downward.

  Here, in order for the operator to supply fuel to the fuel filler port on the bonnet 25, first, the sub-step 46 is bolted as shown in FIGS. 48 is rotated 180 degrees in the direction of the arrow using 48 as a rotation fulcrum. Then, the process proceeds to sub-step 46 where the fuel filler cap 26 is removed and fuel is supplied. When finishing the refueling operation, the refueling port cap 26 is fitted onto the bonnet 25 and descends from the sub-step 46. Then, the sub-step 46 is rotated 180 degrees in the direction opposite to the arrow with the bolt 48 as a rotation fulcrum, and is stored immediately below the step 45.

As described above in detail, the tractor 21 of this example includes the bonnet 25, the driver's seat 30, and the elevating step 37 that assists in getting on and off the driver's seat 30, and the elevating step 37 facilitates the work on the hood 25. The sub-step 46 is provided. In addition, the sub-step 46 is provided so as to be rotatable in the horizontal direction from the lower surface of the step 45 of the elevating step 37.
The sub-step 46 is not limited to being used when the fuel filler cap 26 on the bonnet 25 is attached or detached, and can be used for any work on the bonnet 25. Further, the present invention is not limited to the work on the hood 25, and may be appropriately used for the alignment of the mirror 36, when cleaning the vicinity of the cabin 27, when replacing the wiper provided on the windshield of the cabin 27, and the like.

  The sub-step 46 may be configured as shown in FIGS. In FIG. 6A, a lowermost step 45a of the lifting step 137 is provided so as to protrude rightward from the width of the side plates 41A and 41B, and the sub-step 51 is attached so as to overlap the upper surface 45au of the step 45a.

  FIG. 6B is a side view taken along the arrow C in FIG. In the sub-step 51, a hinge 52 is provided at the left corner in the figure, and the lower surface of the hinge 52 is attached to the upper surface 45au of the step 45a by welding or the like.

  When using the sub-step 51, as shown in FIG. 6C, the sub-step 51 is rotated 180 degrees in the direction of the arrow with the hinge 52 as a rotation fulcrum, and is in contact with the upper surface 45au of the step 45a. The sub-step 51 is used with the lower surface 53 facing up. When storing the sub-step 51, the sub-step 51 is rotated 180 degrees in the direction opposite to the arrow direction, and stored just above the step 45a. Since the hinge 52 is provided at a distance W from the left end of the step 45a, it can overlap with the step 45a by the distance W even when the sub-step 51 is opened, and the load resistance can be improved.

  As described above in detail, the tractor 21 of this example includes the bonnet 25, the driver's seat 30, and the elevating step 37 that assists in getting on and off the driver's seat 30, and the elevating step 37 facilitates the work on the hood 25. The sub-step 46 is provided. In addition, the sub-step 46 is provided so as to be openable and closable with respect to the upper surface 45 au of the step 45 a of the elevating step 37.

  7A to 7C show still another example of steps. In FIG. 7A, the lowermost step 45b of the raising / lowering step 237 has a rectangular tube shape, and a sub-step 63 is installed in a space 62 in the step 45b so as to be slidable in the horizontal direction.

  FIG. 7B is a side view taken along the arrow D in FIG. 64 A of guide holes are provided in the two long side surfaces of step 45b along the long side direction. On the other hand, a guide pin 64B protrudes from the right ends of the two long side surfaces of the sub-step 63.

  When using the sub-step 63, as shown in FIG. 7C, the handle 65 is grasped and the sub-step 63 is moved until the guide pin 64B contacts the left end of the guide hole 64A and the sub-step 63 stops moving. Slide in the direction. When storing the sub-step 63, the sub-step 63 is slid in the direction opposite to the arrow direction and stored in the step 45b.

  As described above in detail, the tractor 21 of this example includes the bonnet 25, the driver's seat 30, and the elevating step 37 that assists in getting on and off the driver's seat 30, and the elevating step 37 facilitates the work on the hood 25. The sub-step 46 is provided. In addition, the sub-step 46 is provided so as to be movable in the horizontal direction from within the step 45 b of the elevating step 37.

  Further, the sub-step can be fixedly installed. FIG. 8 shows a front view of the vicinity of the lifting step 337 in that case. In step 45c, a sub-step 71 is provided horizontally inward in the vehicle width direction of the tractor 21 via the side plate 41A at the front end in the traveling direction of the tractor 21. In addition, the sub-step 71 is attached to the vehicle body frame 22 via a stay 72 by welding or the like.

  In the above-described example, a tractor (agricultural working machine) has been described as an example of a working machine. However, the present invention is not limited to this, and a combiner or the like as a agricultural working machine, or a backhoe or bulltozer as a construction working machine. Furthermore, the present invention can be applied to any work machine equipped with a bonnet such as a forklift as a transfer work machine.

It is a side view which shows the tractor as an example of the self-propelled working machine of this invention. FIG. 2 is an enlarged side view of the vicinity of a lifting step of the tractor shown in FIG. 1. It is an A arrow front view of the raising / lowering step of FIG. It is a B arrow top view of the raising / lowering step of FIG. (A), (b) is a figure when a substep is rotated from the step of FIG. (A) which shows another example of a raising / lowering step is a front view, (b) is a C side view of (a), (c) is a figure when the substep of (b) is opened. is there. (A) which shows another example of a raising / lowering step is a front view, (b) is a side view of the arrow D of (a), (c) is a figure when the substep of (b) is pulled out. It is. It is a front view which shows another example of a substep. It is a side view of the conventional tractor.

Explanation of symbols

21 Tractor (self-propelled working machine)
22 body frame 23 front wheel 24 rear wheel 25 bonnet 26 oil filler cap 27 cabin 28 operation pedal 29 handle 30 driver's seat 31 windshield 32 rear glass 33 door 34 roof 35 antenna 36 mirror 37, 137, 237, 337 lift step 38 fender 39 reflection Plate 41A, 41B Side plate 42 Top plate 44, 45, 45a, 45b, 45c Step 45au Upper surface 46, 51, 63, 71 Substep 47 Through hole 48 Bolt 49 Nut 52 Hinge 53 Lower surface 62 Space 64A Guide hole 64B Guide pin 65 Handle 72 stays

Claims (4)

In a self-propelled working machine comprising a bonnet, a driver's seat, and an elevating step that assists getting on and off the driver's seat,
A self-propelled working machine comprising a sub-step for facilitating work on the bonnet in the lifting step.   The self-propelled working machine according to claim 1, wherein the sub-step is provided so as to be movable in a horizontal direction from the lifting step.   The self-propelled working machine according to claim 2, wherein the sub-step is provided so as to be rotatable in a horizontal direction from the ascending / descending step. The self-propelled working machine according to claim 1, wherein the sub-step is provided so as to be openable and closable with respect to an upper surface of the elevating step.

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