JPH0277369A - Ground working machine - Google Patents

Abstract

PURPOSE:To eliminate the need of punching a fender and to improve the position accuracy of fitting a cover by fastening a support on the upper end of a support frame, the lower end of which is fixed to a rear wheel shaft case, through a cover bracket having a rear fender and a support cover fitting portion. CONSTITUTION:A support frame 13 supporting a guide frame 7 erected on a rear frame 6 has the lower end fixed to a rear wheel shaft case, and a support portion 15 is formed on the upper end and pressed and fixed to the lower surface of a fitting seat 18 of a rear fender 6. On the other hand, the lower end portion of the support 8 is fixed to a braket 25 fixed to the upper surface of the fitting seat 18 through a bracket 22 for a cover. The above members are fastened by inserting bolts 28 in positioned and punched insert holes. By this arrangement, the need of punching the fender can be eliminated and the cover can be fitted correctly.

Description

Detailed Description of the Invention A0 Object of the Invention (1) Industrial Application Field The present invention provides a driver's seat that is arranged between rear fenders that cover left and right rear wheels, and a guard frame that is mounted on the rear fender on both sides of the driver's seat. The present invention relates to a ground-based work machine in which each of the pillars constituting the structure is erected.

(2) Conventional technology Conventionally, ground work machines in which the support of the guard frame was erected on the rear fender were used, for example, in
It is publicly known from Publication No. 494 and the like.

(3) Problems to be Solved by the Invention Although it is desirable to cover the strut with a cover in order to improve marketability, it is difficult to ensure precise relative positional accuracy between the strut and the fender. If installed on a pillar, the relative positional accuracy of the cover and rear fender will be inaccurate. Therefore, by attaching the cover to the rear fender, the relative positional accuracy between the cover and the rear fender can be made almost accurate. However, there are cases where the guard frame cannot be attached to the fender.
Considering such a case, it is not desirable to provide a hole or the like for attaching the cover to the rear fender.

The present invention has been made in view of the above circumstances, and provides a ground-based work machine in which a cover can be mounted with almost accurate relative positional accuracy to the rear fender without providing unnecessary holes or the like in the rear fender. The purpose is to

B0 Structure of the Invention (1) Means for Solving the Problems The present invention provides a structure in which a driver's seat is arranged between rear fenders that cover left and right rear wheels, and struts constituting a guard frame are provided on the rear fenders on both sides of the driver's seat. In each ground-based work machine that is installed upright, the upper end of the support frame, which is fixed at the lower end to the rear axle case and extends upward, has a mounting section for attaching a rear fender and a cover that covers the pillar. It is characterized in that the lower end of the support column is fastened with a cover bracket positioned and arranged at the support bracket.

(2) Effects According to the above configuration, by attaching the cover to the cover bracket whose relative positional accuracy with respect to the rear fender is almost accurate, it becomes possible to make the relative positional accuracy of the cover with respect to the rear fender almost accurate.

(3) Embodiment Below, an embodiment of the present invention will be described with reference to the drawings. First, in FIG. 1, a pair of left and right front wheels 2 are suspended at the front part of a body 1 of a riding tractor T as a ground work machine. A pair of left and right rear wheels 3 are suspended at the rear of the body l. Further, a driver's seat 5 for a driver who operates a steering wheel 4 and the like is provided at the rear of the aircraft body 1.

Referring also to FIG. 2, a pair of left and right rear fenders 6 that individually cover the rear wheels 3 are disposed at the rear of the aircraft body 1, and the driver's seat 5 is disposed between the two rear fenders 6. This rear fender 6 includes a side plate part 6a arranged on the inner side along the axial direction of the rear wheel 3, and a cover part 6b connected to the side plate part 6a to cover the outer side in the radial direction of the rear wheel 3. The upper part of each rear fender 6 near the front is provided with operating parts such as operating levers La, Lb, and the upper part of each rear fender 6 near the rear is provided with a guard frame 7 as shown in FIG. It will be erected. This guard frame 7 is
A pair of pillars 8.8 are erected on the rear fender 6 on both sides of the driver's seat 5, and the upper ends of both branches 8.8 are formed into a substantially U-shape that opens toward the front in the traveling direction of the passenger tractor T. The beam 9 is connected to the beam 9. Moreover, each support column 8 is covered with a cover 10, and a roof 11 connected to the upper end of each cover 10 is provided on the beam 9.

4 and 5, a guard frame 7 erected on the rear fender 6 is supported by a support frame 13 fixed to the rear axle case 12 of the rear wheel 3 below the rear fender 6. be done. This support frame 1
3 has a gate-shaped structure, and includes a pair of legs 14 whose lower ends are fixed to the rear axle case 12 and extend upward, and a support part 15 which interconnects the upper ends of both legs 14. An upper end of an auxiliary leg part 17 whose lower end is fixed to the hydraulic case 16 and extends upward is fixed to the longitudinal center of the part 15 . Further, both longitudinal ends of the support portion 15 extend outward from the upper ends of the leg portions 14, and the lower ends of the columns 8 of the guard frame 7 are attached to the upper surfaces of both ends of the support portion 15. The mounting provided on the upper part of the rear fender 6 has support protrusions 19 protruding from the lower surface of the seat 1 to abut from below.

Moreover, the legs 14 of the support frame 13 not only function as a strength member that constitutes a part of the support frame 13 and supports the guard frame 7, but also serve to scrape off mud, snow, etc. adhering to the rear wheel 3. It also functions as a scraper for scraping the outer surface 14a of the rear fender 6 along the axis of the rear wheel 3 at the rear side of the rear edge of the side plate 6a of the rear fender 6 along the traveling direction of the passenger tractor T. The rear axle case 12 is fixed to the rear axle case 12 so as to be positioned outward from the outer surface of the rear axle case 12.

In FIG. 6, the mounting mounted on the upper part of the rear fender 6 and supported from below by the support protrusion 19 of the support frame 13 is mounted so that the upper surface is horizontal when the riding tractor T is on a horizontal road surface. The seat 18 has four insertion holes 21 that correspond to the four insertion holes 20 formed in the support protrusion 19 of the support frame 13. .

The lower end of the support column 8 in the guard frame 7 is fixed to a bracket 23 which is fixed to the upper surface of the seat 18 via a cover bracket 22.

The cover bracket 22 is made up of a rectangular plate-shaped bracket main body 22a corresponding to the seat 18, and three mounting parts 22b connected to the side edges of the bracket main body 22a. 22b is mounted around the seat 18 and is bent upward or downward at a substantially right angle in accordance with the shape of the upper surface of the fender 6, and is connected to the side edge of the bracket body 22a. Furthermore, as shown in FIG. 6A, the bracket body 22a of the cover bracket 22 is provided with a pair of positioning protrusions 24 that protrude downward by, for example, burring processing, and are attached to the seat 18.
In addition to the four insertion holes 21, there is a positioning protrusion 24.
A pair of holes 25 are drilled into which the holes 25 can be inserted. Therefore, the positioning protrusion 24 is inserted into the corresponding hole 25 and the cover bracket 22 is mounted on the seat 18! When the cover bracket 22 is installed, the cover bracket 22 is positioned relative to the rear fender 6. Moreover, in that positioning state, the mounting is performed in each of the insertion holes 2 of the seat 18.
The four insertion holes 26 corresponding to the cover bracket 2
The bracket main body 22a at 2 is bored.

The bracket 23 is provided with an insertion hole 27 (see FIG. 3) that corresponds to the insertion holes 26, 21° 20, and the bracket 23 is mounted on the cover bracket 22 positioned and placed on the seat 18. 23 is placed, and the insertion holes 27, 2
6, 21. By screwing the nut 29 onto the lower end of the bolt 28 inserted from above and tightening it, the bracket 23 is attached to the rear fender 6 via the cover bracket 22.
.

The mounting in is fixed on the seat 18.

This bracket 23 is provided with a projecting portion 30 projecting outward from the mounting seat 18 of the riding tractor T. A pair of support plate portions 30a, 30b extending upwardly.
formed by. Thus, the lower end of the support column 8 is fitted between the support plate portions 30a, 30b, and the support plate portions 30a, 3
The tip of 0b and the side surface of the lower end of the support column 8 are welded and fixed.

The lower end of the cover 10 covering the support column 8 is connected to the mounting portion 22b of the cover bracket 22 sandwiched between the mounting seat 18 and the bracket 23 via a synthetic resin rivet 31. A mounting hole 32 is formed in each mounting portion 22b for inserting a rivet 31 therethrough. Moreover, the side surfaces of the five driver's seats at the lower end of the cover 10 are formed to be inclined upward as they go outward, thereby forming an armrest portion 33 at the lower end of the cover 10. become. In other words, the attachment is achieved by fitting and fixing the lower end of the vertically extending strut 8 to the overhanging portion 30 extending outward from the seat 18, so that the connecting portion between the bracket 23 and the strut 8 forms an oval shape. , the armrest portion 33 is formed by forming the lower end portion of the cover IO so as to obliquely cover the inner side of the abbreviated connecting portion.

Referring also to FIG. 7, a lighting device such as a blinker 35 is attached to the outer surface of the cover IO near the upper end with a pair of screw members 34. Moreover, the blinker 35 can be attached to the seat 18 via the bracket 23 without attaching the guard frame 7. That is, the blinker 35 is installed so as to cover the seat 18, and is configured so that the screw member 34 can be inserted through the position corresponding to the pair of holes 25 provided in the seat 18, and the rear fender 6 is attached downwardly. A screw hole (not shown) into which the screw member 33 can be screwed is provided in the support protrusion 19 of the support frame 13 that is supported from the support frame 13 . Note that it is also possible to remove the support frame 13 when the guard frame 7 is not attached, and in that case, the mounting plate has a threaded hole that can be screwed into the threaded member 33, so that the plate is brought into contact with the lower surface of the rear fender 6. It is also possible to mount the blinker 35 on the rear fender 6.

8 and 9, the beam 9 of the guard frame 7 connects the rear ends of a pair of parallel parts 9a, 9a extending along the traveling direction of the riding tractor T. It is connected at a portion 9b to form a substantially U-shape, and a support 8.
8 are connected via bolts 37 and nuts 38.

Moreover, the joint between the support column 8.8 and both parallel parts 9a, 9a of the beam 9 is set at such a position that the distance from the joint to the tips of the parallel parts 9a, 9a is as short as possible. Further, a cylindrical reinforcing member 39 parallel to the connecting portion 9b is installed between both parallel portions 9a, 9a in a portion closer to the connecting portion 9b.

By the way, in order to sufficiently cover the driver's seat 5 from rain, snow, etc. and to fully perform the function as a sunshade, the roof 11 provided on the upper part of the guard frame 7 must be lower than the tip of the beam 9 in the guard frame 7. It is necessary to extend further forward, and for this purpose both parallel parts 9a, 9 of the beam 9
In a, a support member 4 for supporting the front part of the roof 11 is shown.
0.40 are fixed so as to protrude further forward than the front ends of the parallel parts 9a, 9a, respectively. Moreover, these supporting members 40, 40 do not need to function as strength members constituting the guard frame 7, and only need to be strong enough to support the roof 11.

The roof 11 includes an outer plate 11 that forms the main part of the outer surface.
a, an inner plate 11b made of a plurality of members such as a member that covers the beam 9 in cooperation with an outer plate 11a, and the outer plate 1fa and the inner plate 11b are connected to each other, and the beam 9 and the support It is coupled and supported by member 40.

In order to connect the upper end of the cover 10 to such a roof 11, a fitting hole 41 is formed by the outer plate 11a and the inner plate 11b. That is, the upper end portion of the cover 10, which is basically formed into a rectangular tube shape, is fitted into the fitting hole 41. In this fitted state, the outer F of the roof 11
i, 11a and the cover 10 are synthetic resin rivets 42
The roof 11 and the cover IO can be connected to each other regardless of the height of the upper end of the support column 8 from the rear fender 6, that is, the height of the roof 11 from the rear fender 6. , cover 10
An elongated hole (not shown) into which the rivet 42 can be inserted is formed in the upper end thereof and extends vertically.

10 and 11, a storage recess 43 is provided on the rear lower surface of the roof 11. As shown in FIGS. That is, the inner plate 11b is provided with a rectangular storage recess 43 recessed upward corresponding to a portion surrounded by the beam 9 and the reinforcing member 39,
The inner plate 1 is placed so as to cover the storage recess 43 from below.
A mesh member 44 is attached to 1b.

The net-like member 44 has a support frame 45 formed in a substantially U-shape corresponding to the rear opening edge and both side opening edges of the storage recess 43.
The rear edge and both side edges are engaged with each other, and the support frame 45 is fixed to the inner plate 11b. Moreover, an elastic cord 46 made of rubber or the like is stretched on the support frame 45 at a portion corresponding to the front opening edge of the storage recess 43;
The leading edge of the mesh member 44 is engaged with the front edge of the mesh member 44 . Therefore, the front part of the storage recess 43 can be opened by grasping the front edge of the net member 44 and pulling it downward, and when the net member 44 is released, the tension of the elastic cord 46 causes the net member 44 to open the storage recess 43.
3 will be closed.

Next, to explain the operation of this embodiment, the rear fender 6 is attached to the seat 18 through the cover bracket 22, and the bracket 23 is provided with a projecting portion 30 projecting outward. Since the lower end of the column 8 of the guard frame 7 is fixed to the protrusion 30, the lower end of the cover 10 covering the column 8 is also located at a relatively distant position from the driver's seat 5, so that when operating the operating levers La and Lb, It is possible to avoid the pillar 8 and the cover 10 from hitting the driver's elbow or the like and causing trouble in the driver's exercise. Moreover, since an armrest 33 is provided at the lower end of the cover 10 on the side of the driver's seat 5, when working while looking backwards, such as when plowing with a riding tractor T, you can support your elbow on the armrest 33 and move backwards. This makes it easier to see the rear view.

Furthermore, when the upper end of the support frame 13 whose lower end is fixed to the rear axle case 12 is attached to the rear fender 6, it comes into contact with the lower surface of the seat 18. is strongly supported. Moreover, the mounting bracket 22 is interposed between the cover bracket 22 positioned on the seat 18 and the mounting seat 1, and the bracket 23 is coupled to the support frame 13.
Since the lower end of the cover 10 is attached to the mounting part 22a of the cover bracket 22, the relative position between the cover 10 and the rear fender 6 can be set always constant, and the relative position accuracy of the cover IO and the rear fender 6 can be set constant. can be improved.

m of the support frame 13 that supports the guard frame 7
Since the portion 14 is disposed on the rear side of the side plate portion 6a of the rear fender 6, and the outer surface 14a is located on the outer side of the side plate 6a, it functions not only as a strength member of the support frame 13 but also as a scraper. can be fulfilled. That is, mud, snow, etc. adhering to the rear wheel 3 can be scraped off as the rear wheel 3 rotates, and mud, snow, etc. can get between the rear wheel 3 and the rear fender 6, and the rear fender 6, which has relatively weak strength, can be scraped off. Deformation can be prevented.

The roof 11, which covers the driver's seat 5 from rain, snow, etc. and also functions as a sunshade, is connected to the upper end of the cover 10, but the height of the roof 11 from the rear fender 6 is depends on the height of the guard frame 7 from the rear fender 6, whereas the height of the upper end of the cover 10 from the rear fender 6, which can maintain the relative positional accuracy with respect to the rear fender 6 almost accurately, is kept almost constant.

Therefore, the vertical relative position of the upper end of the cover 10 with respect to the roof 11 may fluctuate, but the upper end of the cover 10 is fitted into the fitting hole 41 provided in the roof 11, and in the fitted state. Since they are fastened to each other, the roof 11 and the cover 10 can be connected even if the relative positions in the vertical direction change somewhat, and accordingly, the dimensional accuracy of the support column 8 can be made somewhat rough.

By the way, a storage recess 43 that is closed by a net-like member 44 is provided at the rear of the roof 11, and the front part of the net-like member 44 is engaged with an elastic cord 46.

Therefore, by pulling the front part of the net-like member 44 downward to open it, it is possible to store small items such as raincoats and work clothes in the storage recess 43, and by letting go of the net-like member 44, the elastic cord 46 can be stored. Due to the tension of the mesh member 44
can be closed and the small item can be supported by the net-like member 44. Moreover, since the storage recess 43 is provided in the rear part of the roof 11 so as to be recessed upward, it does not obstruct the driver's view on the driver's seat 5, and does not get in the way when the driver gets on and off the vehicle.

Furthermore, the support 8 of the beam 9 that constitutes the upper part of the guard frame 7
The distance l from the connecting part to the front end is set as small as possible, and the front end of the roof 11 overhanging forward from the beam 9 is supported by the support member 40 extending forward from the beam 9. Since it is supported, even if a load is applied to the front end of the roof 11, the vibration of the roof 11 can be suppressed, and the load can be prevented from acting directly on the beam 9.

By the way, the guard frame 7 is removably attached to the rear fender 6.
When it is no longer needed, it is removed from the fender 6. At this time, the mounting seat 1 remains on the cutter fender 6, but the turn signal 3 remains on the seat 18.
5 can be attached, and by attaching the turn signal 35, the seat 18 can be covered, improving marketability.

Therefore, there is no need to change the structure of the rear fender 6 depending on the presence or absence of the guard frame 7, which can also contribute to cost reduction.

C0 Effects of the Invention As described above, according to the present invention, the upper end of the support frame, whose lower end is fixed to the rear axle case and extends upward, has a mounting section for mounting the rear fender and the cover that covers the pillar. Since the lower end of the column is fastened through the cover bracket positioned on the rear fender, the cover is attached to the rear fender when the cover bracket is positioned on the rear fender. , the relative positional accuracy of the cover and rear fender can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall side view of the ground-based work equipment, FIG. 2 is a rear view showing half of the ground-based work equipment in the width direction, and FIG. 3 is a perspective view of the guard frame. , Fig. 4 is a large sectional view taken along the line IV-TV in Fig. 1, Fig. 5 is a sectional view taken along the line V-V in Fig. 4, and Fig. 6 is a perspective view showing the seat and cover bracket for installing the fender. 6A is an enlarged sectional view taken along the line VIA-VIA in FIG. 6, FIG. 7 is a perspective view showing the installation of the beam fender and a perspective view corresponding to FIG. 6 showing the seat and lamp, and FIG. Figure 9 is a cross-sectional view taken along the line IX-IX in Figure 8, Figure 10 is an enlarged view of Figure 1 in the direction of the X arrow, and Figure 11 is an enlarged cross-sectional view of Figure 10. FIG.

Claims (1)

[Claims] A ground-based work machine in which a driver's seat is arranged between the rear fenders that cover the left and right rear wheels, and pillars constituting a guard frame are erected on both sides of the driver's seat on the rear fenders, the lower end of which is fixed to the rear axle case. A rear fender and a cover bracket, which has a mounting part for attaching a cover that covers the pillar and is positioned and arranged on the rear fender, are interposed on the upper end of the support frame that extends upward, so that the lower end of the pillar is fastened. A ground-based work machine characterized by: