JPH10278597A - Working machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize the structure to be loaded with an engine, and reduce the weight thereof by supporting a front stay, which is continuously provided to an engine, with a battery support frame connected to a front part of a mission case continuously provided to a front part of a machine body frame, and supporting a rear stay, which is continuously provided to the engine, with the mission case. SOLUTION: In the case of loading a passenger type rice transplanter with an engine 15, a front stay 70 continuously provided to the engine 15 is supported by a battery support frame 10, and a rear stay 71 continuously provided to the engine 15 is supported by a mission case 8. Namely, in the battery support frame 10, a boss 74, which is fixed to the front stay 70, is fitted to a bracket 73, which is fitted to a lateral plate part through a vibration control jig 72, freely to be turned, and the rear stay 71 is fitted to a seat 76, which is fitted to a top surface of the mission case 8, through a vibration control jig 77. These front and rear stays 76, 71 are formed of one base to be loaded with an engine, and a front part of the base is formed as a front stay 70, and a rear part of the base is formed as a rear stay 71, and an intermediate part thereof in the fore and aft direction is formed as a part to be loaded with an engine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working machine such as a paddy working machine represented by a riding type rice transplanter.

[0002]

2. Description of the Related Art In a paddy field working machine, which is an example of a conventional working machine, an engine mounting frame is connected to the front of a transmission case connected to the front of an airframe and an engine is mounted on the engine mounting frame. Was.

[0003]

However, according to the above-mentioned conventional technique, when the interval (span) between the engine support points is increased to stabilize the engine support, the size of the engine mounting frame is correspondingly increased. In the case of a large-sized and small-sized working machine, the miniaturization of the engine mounting structure is hindered. However, reducing the span makes it very difficult to stabilize the engine support,
In particular, when the engine is mounted on an anti-vibration device via a vibration isolator, the inclination of the engine due to the elastic deformation of the vibration isolator becomes larger than when the span is increased, and the displacement of the output shaft of the engine is reduced. When it becomes large, the transmission performance from the engine to the transmission case may be reduced.

An object of the present invention is to attain a reduction in size and weight of an engine mounting structure while ensuring a sufficient span to stabilize engine support.

[0005]

The features, functions and effects of the first aspect of the present invention are as follows.

[Characteristics] A battery support frame is connected to the front of a transmission case connected to the front of the body frame, a front stay connected to the engine is supported by the battery support frame, and the battery support frame is connected to the engine. The rear stay is supported by the transmission case.

According to the first aspect of the present invention, a front stay connected to the engine is supported by a battery support frame connected to a front portion of the transmission case, and a rear stay connected to the engine is supported by the transmission case. In other words, the engine is installed over the battery support frame and the transmission case, and the battery support frame and the transmission case are used as the engine mounting frame. There is no increase in size and weight of the frame and the transmission case.

[Effects] Therefore, according to the first aspect of the present invention, it is possible to reduce the size and weight of the engine mounting structure while ensuring a sufficient span to stabilize the engine support.
In particular, when the engine is supported by the vibration isolator via the vibration isolator, the inclination of the engine due to the deformation of the vibration isolator is reduced, and the transmission performance from the engine to the transmission case can be maintained satisfactorily.

According to the second aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first invention,
The front stay and the rear stay are constituted by one engine mounting base.

According to the second aspect of the present invention, the front stay and the rear stay are composed of one engine-mounted base, and the front stay and the rear stay are integrated into one. When attaching the engine to the stay and the rear stay, the engine may be aligned with one engine mounting base.

[Effect] Therefore, according to the second aspect of the present invention, the engine can be attached and detached with good workability.

According to the third aspect of the present invention, the features, functions,
The effects are as follows.

[Features] In the features of the first and second aspects of the present invention, the front stay and the rear stay are supported by a battery support frame and a transmission case, respectively, via a vibration isolator.

[Operation] As means for supporting the engine through vibration isolators, means for supporting the engine on the front stay and the rear stay through the vibration isolators can be considered.
In this case, the interval between the vibration isolators becomes smaller, and the inclination of the engine accompanying the deformation of the vibration isolators becomes larger.

On the other hand, according to the third invention,
Since the front stay and the rear stay are supported by the battery support frame and the transmission case via the vibration isolator to support the engine in a vibration isolating manner, the interval between the vibration isolator can be increased.

[Effect] Therefore, according to the third aspect of the present invention, the transmission performance from the engine to the transmission case is improved by suppressing the inclination of the engine due to the deformation of the vibration isolator, while supporting the engine with vibration isolation. Can be maintained.

According to the fourth aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first invention, the second invention, and the third invention, the front side of the front steps for getting on and off, which are disposed on both the left and right outer sides and the front side of the engine, supports the battery. The point is that it is connected and supported by the frame.

[Operation] According to the fourth aspect of the present invention, the front side of the front step having the frame function for getting on and off is connected to the battery support frame so as to complement each other in strength and rigidity. At the same time, the front step can be reinforced and the battery support frame can be reinforced.

[Effect] Therefore, according to the fourth aspect of the present invention, the front step and the battery supporting frame can be made strong without requiring any special reinforcing member.

According to the fifth aspect of the present invention, the features, functions,
The effects are as follows.

[Features] In the features of the first invention, the second invention, the third invention, and the fourth invention, a coupler is connected to an electrode of a battery attached to the battery support frame. .

[Operation] According to the fifth aspect of the present invention, when the battery is removed from the battery support frame,
By disconnecting the coupler connected to the battery electrode from the coupler on the fuselage side, the electrical connection to the fuselage side of the battery can be cut off.When attaching the battery to the battery support frame, connect the coupler connected to the battery electrode to the fuselage. Since the battery can be connected to the fuselage side by connecting to the coupler on the side, troublesome work such as attaching and detaching the electric wire to and from the electrode is unnecessary.

[Effects] Therefore, according to the fifth aspect of the present invention, the replacement of the battery and the attachment and detachment of the battery for maintenance can be performed with good workability.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A riding type rice transplanter, which is a paddy working machine as an example of a working machine, has a seedling rest 3A at the rear of a riding type self-propelled body 1 as shown in FIG. The seedling planting device 3 is connected via a link mechanism 2 so as to be able to move up and down, and a hydraulic cylinder 4 for driving and raising and lowering the seedling planting device 3 is provided.

As shown in FIGS. 2 and 3, the self-propelled body 1 includes a transmission case 8 supporting a pair of left and right front wheels 7.
A front step 9 made of metal (such as iron) is connected to a front portion of a body frame 6 provided with an axle case 5A pivotally supporting a pair of left and right rear wheels 5 in a cantilever shape facing forward. 9 has a frame structure in which the front side of the transmission case 9 and the front of the transmission case 8 are connected by a battery support frame 10. The front wheels 7 are steering drive wheels, and the rear wheels 5 are drive wheels.

The body frame 6 is shown in FIGS.
As shown in FIG. 5, a pair of left and right main frame members 6A in a front-rear direction, a pair of left and right side frame members 6B located on the left and right sides thereof, and left and right connecting the front ends of the main frame member 6A and the side frame members 6B. The front frame member 6C has an orientation posture, and a rear end portion of the side frame member 6B is formed as a connecting portion 6a which is bent inward to be connected to the main frame member 6A. The main frame member 6A and the side frame member 6B are also connected by supporting frames 62 and 63 for supporting the pair of right and left steps 61 on the main frame member 6A and the side frame member 6B.

Then, the driver's seat 11, the steering handle 12,
At the front of the operation unit having the operation step 13, the driving unit 1
4 is provided, and the engine 1 which is the main
The mounting structure of No. 5 is as follows. As shown in FIGS. 2 to 6, a front stay 70 connected to the engine 15 is supported by the battery support frame 10, and a rear stay 71 connected to the engine 15 is supported by the transmission case 8. ing. More specifically, a boss 74 fixed to the front stay 70 is attached to a bracket 73 attached to the horizontal plate portion 10a of the battery support frame 10 via a vibration isolator 72 via a support shaft 75 using bolts in a left-right posture. A rear stay 71 is attached via a vibration isolator 77 to a seat 76 attached to the upper surface of the transmission case 8 so as to be rotatable around a left-right axis. The vibration isolator 72 for supporting the front stay 70 in a vibration-isolating manner is a rubber plate having a plurality of ridges 72a formed on the surface thereof. The means for attaching the bracket 73 to the horizontal plate portion 10a is a top surface of the horizontal plate portion 10a. Vibration isolator 7 on bottom and bottom
2 is a means for sandwiching between the bracket 73 and the abutment plate 73 in a state where the flat back surface without the ridge 72a is abutted, and holding the state with bolts and nuts 73a.
Numeral 2 is one that elastically deforms in the vertical direction. The boss 74
A rubber-made vibration-proof bush 78 is arranged on the inner peripheral surface of the rubber member. That is, the front stay 70 is supported by the vibration isolator 72 and the bush 78 in a vibration-isolating manner. The vibration isolator 77 that supports the rear stay 71 with vibration isolation is made of rubber and elastically deforms vertically. In addition, you may implement without providing the said bush 78.

The front stay 70 and the rear stay 71 are formed of a single engine mounting base 79. That is, the front portion of the engine mounting base 79 is a front stay 70, the rear portion is a rear stay 71, and the front and rear middle portion is an engine mounting portion.

From the engine 15 to the transmission case 8
2 and 3, an output shaft 15a of the engine 15 and an input shaft 8 of the transmission case 8 are provided.
a means for providing a first sub-transmission 53 capable of two-stage shifting by selectively engaging two belt tension clutches having different transmission ratios provided over the other of the belt tension clutches. The transmission of the power of the engine 15 is transmitted to the transmission case 8 when the transmission state is set to the on state, and the transmission is cut off when both belt tension clutches are set to the off state.

The front step 9 is for getting on and off to get on the vehicle from the front, and as shown in FIGS. It comprises a step part 9A for getting on and off, a front step part 9B located in front of the driving part 14, and a rear step part 9C forming a part of the front part of the driving step 13. The front step 9 has a structure in which the left and right stepping steps 9A are connected by a front step 9B at the front and connected by a rear step 9C at the rear, that is, the engine 15 mounted on the transmission case 8. Is formed in a hollow structure in which an opening 16 for inserting a through hole is formed independently.

As shown in FIGS. 1, 2, and 10, the driving portion 14 is covered with an engine bonnet 17 made of synthetic resin disposed on the opening 16 of the front step 9. The bonnet 17 has an upper cover 17.
a, a rear cover portion 17b, and a front cover portion 17c that can swing and open freely.

A rear cover 18 made of a synthetic resin is mounted on the body frame 6.
The right and left rear wheel fenders 18A as shown in FIG.
And a connecting plate portion 18B for connecting them and the rear step portion 9C to form an operation step portion 1 forming an operation step 13
8C, and the driver's seat 11 is supported by the connecting plate 18B. As shown in FIGS. 1 and 8, the rear cover 18 is attached to the body frame 6 so as to be swingable up and down around the rear portion X1, and can be opened upward beyond the steering handle 12. Have been. Specifically, as shown in FIG. 9, the driving step is formed by forming a concave portion 30 at the middle in the left and right direction at the front end edge of the driving step portion 18C, which is large enough to allow the steering handle 12 to pass along with the upward swing. The step portion 18C is configured to swing from the falling closed posture forming a part of the driving step 13 to the standing open posture in which the center of gravity G is located behind the swing center X1 beyond the steering handle 12 beyond the steering handle 12. I have.

As shown in FIG. 8, the means for attaching the rear cover 18 to the body frame 6 so as to be able to swing up and down around the center X1 is provided by supporting the left and right connecting portions 6a and the brackets 54 and 55 fixed to the rear cover 18. This is means for connecting with a bolt 56 and a nut 57 which also serves as a shaft.

As shown in FIG. 1, the means for holding the rear cover 18 in the upright and open position is configured to receive and support the driver's seat 11 at the upper end of the seedling rest 3A of the lowered seedling planting device 3, It is a means to support by leaning.

As shown in FIGS. 3 and 8, the means for fixing the rear cover 18 in the upright closed position is as follows.
A pair of left and right hooks 59 are attached to the bracket 8, and the hook 59 is detachably engaged with the bracket 59 fixed to the side frame member 6B in a state in which the rear cover 18 is in the lying-down closed posture. This is a means for attaching a buckle 60 for holding and pressing the rear cover 18 against the body frame 6 by holding.

The rear step portion 9C of the front step 9 is formed in a convex shape which enters the concave portion 30 of the rear cover 18 in the lying-down and closed posture and forms the operation step 13 with the operation step portion 18C. I have.

As shown in FIG. 2 and FIG.
A traveling clutch pedal 21a projecting upward through an opening 20a is disposed at a rear portion of one of the left and right stepping steps 9A of the front feet, and an opening 20b is formed at the other left and right stepping step 9A. A pair of left and right steering clutch / brake pedals 21b projecting upward through the rear step portion 9C are provided with a front wheel differential lock pedal 21c and an auxiliary transmission operation lever 21d projecting upward through openings 20c and 20d, respectively. ing.

The traveling clutch pedal 21a is for disengaging both belt tension clutches by depressing operation.

The steering clutch brake pedal 21b
Sets the clutch / brake (not shown) for the left and right rear wheels 5 to the clutch disengaged state by a two-step depression operation;
The brakes are sequentially operated in the state of the brake operation by releasing the clutch.

The differential lock pedal 21c operates a differential lock device (not shown) for the front wheels 7 in the transmission case 8 by depressing operation.

The auxiliary transmission operation lever 21d is operable in the left-right direction, and is positioned at a very low speed position, so that the second auxiliary transmission (not shown) in the transmission case 8 can be moved. Switching to the low-speed transmission state, switching the second sub-transmission to the medium-speed transmission state by being located at the medium-speed position, and switching the second sub-transmission to the high-speed transmission state by being located at the high-speed position, The second auxiliary transmission is switched to the non-transmission state by being located at the neutral position between the low speed position and the medium speed position and between the medium speed position and the high speed position.

A lever guard 36 for the traveling speed change operation lever 35 is provided on the rear step 9C. The lever guard 36 is configured by standing up a portion of the rear step portion 9C near the sub-shift operation lever 21d.
The lever also serves as a lever guide for guiding the operation of operation d. That is, the opening 20c through which the sub-transmission operation lever 21d is inserted is formed at a portion one step higher than the upper surface of the operation step 13.

The means for detachably attaching the battery 80 to the battery support frame 10 includes, as shown in detail in FIG. 6, a pair of left and right stays 82 fixed to a case 81 for mounting the battery 80 in a front-rear and left-right positioning state. This is means for attaching to the vertical plate portion 10b of the support frame 10 via fixing bolts FB. As shown in FIG. 7, at the upper end of the stay 82, a notch 82 for positioning the stay 82 with respect to the vertical plate portion 10b by engaging from below a stepped pin 86 fixed to the vertical plate portion 10b.
The auxiliary metal fitting 87 is attached to the stay 82 via an attachment bolt 88. This auxiliary metal fitting 87 has a lateral cutout 87a,
With the mounting bolt 88 loosened,
By pivoting around, the notch 82a is allowed to engage with the stepped pin 86, and the notch 82a
Is engaged with the stepped pin 86, and the lateral cutout 87 is
a is engaged with the stepped pin 86,
And can be switched to a temporary fixing posture for preventing the downward detachment from the stepped pin 86, and is fixed to the vertical plate portion 10b together with the stay 82 by the fixing bolt FB in the temporary fixing posture. . In other words, the auxiliary fitting 87 temporarily supports the stay 82 on the stepped pin 86 until the stay 82 is fixed to the vertical plate portion 10b with the fixing bolt FB. Reference numeral 83 denotes a bolt that presses and fixes the battery 80 to the case 81 via an L-shaped press fitting 84 by tightening a wing nut 85.

As shown in FIG. 4, one of the couplers 90a and 90b which can be inserted and connected is connected to the electrodes 80a and 80b of the battery 80 via an electric wire 91. The other end is connected to the other coupler 90b.

[Alternative Embodiment] In the above embodiment, the front stay 70 and the rear stay 71 are constituted by one engine mounting base 79. However, the front stay 70 and the rear stay 71 are constituted separately. May be implemented.

In the above embodiment, the couplers 90a, 9
Although the electric wire 92 on the fuselage side is connected to the battery 80 using 0b, the electric wire 92 may be connected directly to the electrodes 80a and 80b.

[Brief description of the drawings]

FIG. 1 is an overall side view.

FIG. 2 is a cutaway side view of the front part.

FIG. 3 is a cutaway plan view of the front part.

FIG. 4 is a plan view of a front portion of a frame structure.

FIG. 5 is a plan view of an engine-mounted base.

FIG. 6 is a cutaway front view of the battery mounting structure.

FIG. 7 is a perspective view of a main part of a battery mounting structure.

FIG. 8 is a rear view of the body frame.

FIG. 9 is a perspective view of a rear cover.

FIG. 10 is a perspective view of a front part.

[Explanation of symbols]

 6 Body frame 8 Transmission case 9 Front step 10 Battery support frame 15 Engine 70 Front stay 71 Rear stay 72,77 Anti-vibration device 79 Engine mounting base 80 Battery 80a, 80b Electrode 90a Coupler

Claims (5)

[Claims] 1. A battery support frame is connected to a front part of a transmission case connected to a front part of a body frame, a front stay connected to an engine is supported by the battery support frame, and a rear part connected to the engine is provided. A work machine in which a stay is supported by the transmission case. 2. The work machine according to claim 1, wherein the front stay and the rear stay are constituted by one engine mounting base. 3. The working machine according to claim 1, wherein the front stay and the rear stay are supported by a battery support frame and a transmission case, respectively, via a vibration isolator. 4. The battery supporting frame according to claim 1, wherein a front side portion of the front and rear steps of the engine disposed on both right and left outer sides and a front side of the engine is connected to and supported by the battery support frame. Work machine. 5. The working machine according to claim 1, wherein a coupler is connected to an electrode of a battery attached to the battery support frame.