JP3499480B2 - Driving unit structure of riding type working machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving section structure of a riding type working machine such as a combine harvester and various harvesters.

[0002]

2. Description of the Related Art In the combine driving section, an engine arranged behind a step is covered with a box-shaped engine cover from above, a driver seat is provided on the engine cover, and a steering wheel tower is provided at the front end of the step. Was erected,
And, on the inner side of the step body, a structure is adopted in which the space between the handle tower and the engine cover is closed.
In the past, each component of the operating unit was mainly configured separately with a sheet metal structure.

[0003]

In the above-mentioned conventional structure, the number of members constituting the operating part is increased, and the number of manufacturing and assembling steps is required, which is one of the causes of increasing the cost. Further, since the sheet metal structure is adopted, the weight of the driving section tends to be large. And since the size of the operating part does not change extremely regardless of the size of the aircraft, the weight ratio of the operating part to the entire aircraft is large, especially in a small aircraft, which prevents the weight of the entire aircraft from being reduced. It was a thing.

Needless to say, efforts have been made to reduce the weight by introducing resins and light alloys into the respective constituent parts of the operating section, but the number of members has been reduced and the manufacturing and assembling thereof have been labor-saving. However, further improvement is desired.

The present invention has been made by paying attention to such an actual situation, and it is possible to reduce the number of parts, reduce the weight, and
A main object of the invention is to provide a driving section structure of a riding type working machine capable of improving the workability of assembling.

[0006]

[Means for Solving the Problems] [Structure, Action and Effect of the Invention According to Claim 1]

(Structure) The invention according to claim 1 integrally blow-molds a step of the operating part and a wall-shaped structure standing upright along an end side thereof with a resin material, The boundary portion connecting the wall-shaped structure and the wall-shaped structure, which are formed as separate thin-walled hinges that can be bent and deformed, and the wall-shaped structure.
While connecting and to keep this wall-like structure upright,
That the steps are mounted and connected to the machine frame
Characterize.

(Operation) According to the above configuration, the step of the operating part and the wall-shaped structure standing upright along the edge of the operating part can be integrally molded into a shape expanded together with the hinge part, and after molding, It can be bent at the hinge portion to have a desired standing posture.

(Effect) Therefore, according to the invention according to claim 1, since the step and the wall-shaped structure are each made of a resin material, they are lightweight and do not require a connecting operation to each other or are simple connecting reinforcements. In addition, it is possible to reduce the number of parts, the number of assembly steps, and the weight.

Further, the hinge portion connecting the step and the wall-shaped structure is formed by superposing the opposing wall surface portions of the cylindrical material at the time of blow molding, and thus a complicated metal such as injection molding is used. The step and the wall-shaped structure can be easily and easily integrally manufactured without using a mold, which is effective in reducing the cost of the members constituting the operating part.

[Structure, Action and Effect of the Invention According to Claim 3]

(Structure) In the invention according to claim 2, in the invention according to claim 1, the step and the wall-shaped structure are brought into contact with each other in the vicinity of the hinge portion to form a bending limit of both.

(Operation / Effect) According to the above configuration, when the step and the wall-shaped structure are integrally formed and then bent at the hinge portion, the bending can be performed to the limit thereof. Bending can be performed appropriately, and productivity is improved.

[Structure, Action and Effect of the Invention According to Claim 3]

(Structure) The invention according to claim 3 is the invention according to claim 1 or 2, wherein a flange portion is provided so as to protrude along a side edge of the wall-shaped structure.

(Operation / Effect) According to the above construction, the flange portion functions as a reinforcing rib to improve the strength of the wall-shaped structure, and the flange portion can be used for connecting other members.

[Structure, Action and Effect of the Invention According to Claim 4]

(Structure) The invention according to claim 4 is the invention according to any one of claims 1 to 3,
Partial connecting portions that locally connect the upper wall and the bottom wall are arranged in a distributed manner.

(Operation / Effect) According to the above-mentioned structure, the partially connected steps are hollow, but the strength against the load in the vertical direction is improved, and the steps are lightweight and sufficiently resistant to the riding of the driver. .

[Structure, Action and Effect of Invention of Claim 5]

(Structure) The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein a recessed step portion for mounting engagement with a machine body frame is formed on a bottom surface of the step. I am doing it.

(Operation / Effect) According to the above configuration, when the step and the wall-shaped structure connected to the step are supported by the machine body, the position of the step with respect to the machine body frame is determined,
It can be used without play.

[Structure, Action and Effect of Invention of Claim 6]

(Structure) The invention according to claim 6 is the invention according to any one of claims 11 to 5, wherein the wall-shaped structure is a handle tower in front of the step.

(Operation / Effect) According to the above configuration, the strength of the connection between the step and the handle tower is high due to the integration, and the stand-up operation with the handle tower and the boarding with the handle tower are easy. You can do it with all your heart.

[Structure, Action and Effect of the Invention According to Claim 7]

(Structure) In the invention according to claim 7, in the invention according to claim 6, the handle tower is provided with a wall-shaped portion having a hollow structure in a lower half portion and a loop handle portion having a hollow structure in an upper half portion. It is configured as an integral structure provided with.

(Operation / Effect) According to the above construction, the wall-shaped portion of the hollow structure and the loop handle portion of the integral structure have high rigidity, which promotes the above-described effect of the invention of claim 7.

[Structure, Action and Effect of the Invention According to Claim 8]

(Structure) The invention according to claim 8 is the invention according to claim 6 or 7, wherein a narrow portion is formed at a front end portion of the step, and the narrow portion is fitted into a base portion of the handle tower. A possible recess is formed.

(Operation) According to the above construction, when the handle tower is bent upright with respect to the step, the narrow portion of the front end of the step fits into the concave portion of the handle tower and the lateral positioning is performed, so that the handle tower is firmly fixed. It is possible to maintain a standing posture.

(Effect) Therefore, according to the invention of claim 8, the handle tower has a high upright strength, the driver can apply a load with peace of mind, and the operability is also improved.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a combine as an example of a riding-type working machine, and FIG. 2 is a plan view thereof. This combine connects a cutting pretreatment unit 3 for cutting two lines to the front part of the machine body 2 traveling by the crawler traveling device 1 so as to be able to move up and down, and a threshing device 4 on the left side of the machine body 2, On the right side of the machine body 2, an operating unit 5, a grain tank 7 with an unloader 6, and the like are mounted and arranged.

The operating part 5 is provided so as to overlap with the mounting part of the engine 10. The step 8, the handle tower 9 standing upright at the front end thereof, and the water-cooled type installed laterally behind the step 8 are provided. An engine cover 11 for covering the engine 10 of the vehicle, a driver's seat 12 mounted on the upper surface thereof, an operation panel 13 provided from the left side of the steering wheel tower 9 to the left lateral side of the driver's seat 12, and below the operation panel 13. A side plate 14 that connects the left end of the handle tower 9 and the left end of the engine cover 11 is provided. The operation panel 13 is provided with a shift lever 15 for traveling, a clutch lever 16 for work, a meter panel 17, etc., and a steering ring lever 18 at the right end of the handle tower 9. This steering lever 18
Is configured to be cross-operable, and by swinging left or right, the speed of the crawler traveling device 1 on the swinging side is reduced to steer the machine body in the lever operating direction. At the same time, the cutting pretreatment section 3 is lowered by a forward swing operation, and the cutting pretreatment section 3 is raised by a backward swing operation.

The engine cover 11 has an upper wall portion 21.
The front wall portion 22, the rear wall portion 23, and the lateral wall portion 24 form a box shape that is open toward the inside of the body, and is taken in through the front wall portion 22 and the lateral wall portion 24. It is configured to guide the outside air to the radiator 19 to cool it.

Here, the handle tower 9, step 8,
The front wall portion 22 of the engine cover 11 and the upper wall portion 21 of the engine cover 11 are hollow wall-shaped structures integrated by blow molding, and a boundary portion connecting the wall-shaped structures is bent. The hinge portion 25 is thin and deformable. Then, the blow-molded product in which four hollow bodies are connected by the hinge portion 25 is molded in a flat development state as a whole as shown in FIGS. 8, 9 (a) and 10, and after the molding, the hinge portion is formed. It can be bent into a predetermined use posture via 25.

A hollow loop handle portion 9a is integrally formed on the upper half portion of the handle tower 9 which is erected along the front end of step 8, and the steering wheel is provided on the front surface of the lower half portion. The recessed portion 9b for mounting the steering operation device 20 including the lever 18 and the like is formed, and the decorative cover 26 is detachably mounted on the front surface thereof. Also, on the front surface of the lower half of the handle tower 9,
Groove 9c for engaging and positioning the peripheral edge of the decorative cover 26
Is formed, and an opening 9d through which the operation wire 20a extended from the steering operation device 20 is inserted is formed by post-processing.

As shown in FIGS. 12 and 13, step 8
Has an uneven pattern for preventing slippage and reinforcement on its upper surface, and a plurality of partial connecting portions 8c locally connecting the upper wall 8a and the lower wall 8b are formed in a dispersed manner, so that the driver's The strength to withstand the weight is secured. In addition, a narrow portion 8d is formed at the front end of step 8, and a recess 9e into which the narrow portion 8d can be fitted is formed at the base of the handle tower 9, so that the handle tower 9 is hinged 25.
Since the narrow width portion 8d is fitted into the concave portion 9e when it is bent upright via the handlebar, the standing posture of the handle tower 9 is stabilized. Further, on the left and right sides of the bottom portion of this step 8, downward recessed step portions 8e which engage with the engaging members 34a attached to the machine body frame 34 from above are formed,
The load applied to step 8 is reliably received and supported by the body frame 34. Also, step 8
An opening 8f for inserting the fuselage stop pedal 41 and a fuel supply pipe 42 connected to a fuel tank (not shown) is formed in the front part of the.

As shown in FIG. 20, the hollow front wall portion 22 erected along the rear end side of step 8 is erected with its lower end corner portion 22b in contact with the upper surface of step 8 in the erected state. It is formed to the limit. In addition, FIG.
As shown in FIG. 5, the front wall portion 22 that is folded along the front end side of the upper wall portion 21 of the engine cover 11 is bent with its upper end surface 22c in contact with the lower surface of the front end of the upper wall portion 21 in the folded state. It is formed to the limit.

On the right side of the front wall portion 22, a flange 22a for attaching another member is provided so as to project,
A flange 21a is also projectingly provided on the right side of the upper wall portion 21, and the lateral wall portion 24 is connected to these flanges 22a and 21a.

On the front surface of the front wall portion 22 is provided an outside air intake 27 having a dustproof structure formed by processing after blow molding, and on the lateral side surface of the front wall portion 22 is opened by processing after blow molding. 28 is provided so that the outside air introduced from the outside air intake port 27 is guided into the lateral wall portion 24 through the opening 28. In addition, the lateral wall 2
An outer air intake port 29 formed by processing after blow molding is provided on the outer surface of 4, and a dust cover 30 for covering the outside air intake port 29 is provided.
The outside air taken in from the gap s formed around 0 and the outside air from the outside air intake 27 of the front wall portion 22 are merged and supplied to the radiator 19 in the engine room.

As shown in FIGS. 17 and 18, the upper wall portion 2
The inner wall 21c of No. 1 is locally recessed upward to form the outer wall 21b.
And a plurality of partial connection portions 21d locally connecting the outer wall 21b and the inner wall 21c to each other are formed in a dispersed manner to ensure the strength to withstand the seating load of the driver and the inner wall 2
By forming a large number of recesses in 1c toward the inside of the engine room, engine noise can be absorbed and attenuated. It is possible to further enhance the function of absorbing and damping engine noise by forming the partial connection portions 21d in an irregularly dispersed manner or by making the sizes different from each other.

The lateral wall portion 24 and the rear wall portion 23 are integrally formed by blow molding and are connected by a bendable thin hinge portion 31, and after being bent through this hinge portion 31, By connecting the lateral wall portion 24 to the front wall portion 22 and the upper wall portion 21 with bolts and the like, and connecting the upper edge of the rear wall portion 24 to the rear end side of the upper wall portion 21 with bolts and the like, An open box-shaped engine cover 11 is configured. A duct 32 for taking in outside air is attached to the rear upper surface of the upper wall portion 21, and the outside air taken in from the outside air intake port 33 of the dust-proof structure formed in the duct 32 is also inserted into the lateral wall portion 24 so as to be radiator. 19
It is designed to be used for cooling. Further, the air cleaner 43 in the engine room is configured to take in the clean outside air introduced into the lateral wall portion 24.

If necessary, an L-shaped connecting reinforcing metal fitting is attached to the connecting portion of each portion bent via the hinge portions 25 and 31 to firmly maintain the bent posture.

As described above, the operating section 5 is provided with the cover body A in which the handle tower 9, the step 8, the engine cover 11, the side plate 14, and the operation panel 13 are integrated. A is connected and supported to the front end of the machine body frame 34 via a fulcrum fitting 35 so as to be swingable in the left and right directions and in the up and down directions. That is, as shown in FIGS. 23 and 24, the fulcrum fitting 35 is vertically supported by the vertical boss 36 provided upright on the machine body frame 34, and is supported by the vertical boss 36 so as to be rotatable about the vertical fulcrum y. Along with the circumferential elongated hole 36a
And fulcrum shaft 3 whose rotation range is restricted by pin 37a
7 and a lateral boss 38 connected to the upper end of the fulcrum shaft 37.
8 is connected to a lateral fulcrum x so as to be vertically swingable. Therefore, when the maintenance work is performed by opening the periphery of the engine mounting portion, first, the cover A is lifted upward while slightly swinging laterally outward about the vertically oriented fulcrum y, and the radiator 19 is rotated. After the inner surface of the lateral wall portion 24 is slid outward and upward with respect to the lateral outer edge of the air cleaner 43 and the intake port edge of the air cleaner 43, the lateral fulcrum x is centered as shown in FIG. By swinging a large amount upward, a wide maintenance work space is formed around the engine.

[Other Embodiments] In the above embodiment, the hollow wall-shaped structures on the four faces of the handle tower 9, step 8, and the front wall portion 22 and the upper wall portion 21 of the engine cover 11 are integrated by blow molding. However, only the two faces of Step 8 and the handle tower 9 or Step 8
And blow-molding only two surfaces of the front wall 22 of the engine cover 11, or three surfaces of the step 8 and the handle tower 9 and the front wall 22, or five of the above four surfaces with the rear wall 23 of the engine cover 11. You may unite by. Further, it is conceivable that the left side plate 14 is integrally formed with these via a hinge portion.

[Brief description of drawings]

1] Overall side view of combine

FIG. 2 is an overall plan view of the combine

FIG. 3 is a perspective view of a driving unit

FIG. 4 is a side view with a part cut away of a driving part.

FIG. 5 is a plan view of a driving unit

FIG. 6 is a cross-sectional plan view of a driving part.

FIG. 7 is a side view of the driving unit with the cover opened.

FIG. 8 is a plan view showing a developed state of the molded cover body.

9A is a side view of the molded cover body in a developed state. FIG. (B) Side view of the bent cover body

FIG. 10 is a perspective view showing a developed state of the molded cover body.

FIG. 11 is a perspective view of a bent cover body.

FIG. 12A is a plan view of a step portion of the cover body, and FIG. 12B is a bottom view of a step portion of the cover body.

FIG. 13 is a vertical sectional front view of a step portion of the cover body.

FIG. 14 is a vertical sectional side view of a handle tower portion in the cover body.

FIG. 15 is a front view of the handle tower portion of the cover body.

FIG. 16 is a cross-sectional plan view of the handle tower portion of the cover body.

FIG. 17 is a vertical sectional side view of an upper wall portion of the engine cover.

FIG. 18 (a) A plan view of the upper wall portion of the engine cover (b) A bottom view of the upper wall portion of the engine cover

FIG. 19 is a vertical sectional side view showing a connecting portion between an upper wall portion and a front wall portion of an engine cover.

FIG. 20 is a vertical cross-sectional side view showing a connecting portion between the step portion and the front wall portion of the cover body.

FIG. 21 is a front view of the front wall portion.

FIG. 22 is a transverse plan view of the front wall portion.

FIG. 23 is a perspective view showing a body frame portion below a driving section.

FIG. 24 is a perspective view showing a body frame portion below a driving section.

[Explanation of symbols]

5 Driving department 8 steps 8a Upper wall 8b lower wall 8d narrow part 8e Recessed step 9 handle tower 9a Loop handle part 9e Recess 22 Front wall 22a Flange part 25 Hinge part 34 Airframe frame

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-24864 (JP, A) JP-A-11-227453 (JP, A) JP-A-11-1182 (JP, A) JP-A-7- 137658 (JP, A) Actual development Sho-39-154 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B62D 25/20 B62D 25/22 E02F 9/16

Claims (8)

(57) [Claims] 1. A step of the operating part and a wall-shaped structure standing upright along an edge of the operation part are integrally blow-molded with a resin material, and the step and the wall-shaped structure are formed. configure the boundary portion connecting the door to the hinge portion of the bent deformable thin, come and connects the a member which is formed separately from said wall structure
The wall-like structure of
The structure of the operating part of the riding type work machine, which is mounted and connected to the machine frame . Wherein the step and the wall structure, the operation section structure of the riding working machine according to claim 1, wherein there by Setto as bending limit of both each other in close said hinge portion. 3. The operation section structure of the riding working machine according to claim 1 or 2 are protruded flange portion along the sides of the wall structure. 4. A plurality of positions of said steps, claim a portion connecting portion connecting the top wall and a bottom wall locally are then distributed
The operation part structure of the riding type work machine according to any one of 1 to 3 . The bottom surface of claim 5, wherein the step, the operation section structure of the riding working machine according to claim 1 which is formed a recessed step portion for mounting置係case of the machine frame . 6. The operation part structure of the riding working machine according to any one of claims 1 to 5 wherein the wall-like structure is a step ahead of the handle column. The method according to claim 7, wherein the handle column, provided with a wall-shaped portion of the hollow structure in the lower half, according to claim 6, wherein are integrally configured structure with a loop handle portion of the hollow structure in the upper half The structure of the operating part of the riding type work machine. 8. The riding die work according to claim 6 , wherein a narrow portion is formed at a front end portion of the step, and a concave portion into which the narrow portion can be fitted is formed at a base portion of the handle tower. Structure of the operating part of the machine.