JP2599252Y2 - Bonnet structure of riding rice transplanter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bonnet structure for a rice transplanter.

[0002]

2. Description of the Related Art Conventionally, as one form of a bonnet structure of a riding rice transplanter, a fixed-side bonnet forming portion having a front opening fixed to a body frame, and a detachable opening / closing side detachably attached to a front end edge of the fixed-side bonnet forming portion. Some include a bonnet forming portion and a connection locking mechanism for connecting and locking the detachable opening / closing side bonnet forming portion to the fixed side bonnet forming portion.

[0003] The connecting lock mechanism includes a pair of left and right protruding members provided on the left and right side walls of the detachable opening / closing side bonnet forming portion with the locking pins protruding inward from the fixed side bonnet forming portion. The connecting arms are extended forward from the vertical frame, and a locking pin receiving portion is formed at the end of the connecting arm so as to open forward in a bifurcated manner. A locking pin lock position for locking the locking pin by engaging the hook with the locking pin locked in the locking pin receiving portion, and the locking pin being disengaged from the locking pin. Pivotally supported between a locking pin unlocking position for releasing the lock, and one end of each of the left and right connecting rods is connected to each locking pin locking hook. Of the substantially L-shaped left and right swing levers that pivotally support the Connecting the ends, it is constructed by arranging the rear than the fixed hood forming part of the tip operating portion of the left and right side hood detachable operation to the other end of each of the respective rocking levers.

In this connection locking mechanism, the locking pin locking hook can be moved to the locking pin locking position by pushing the left and right bonnet attaching / detaching operation rods forward and sliding through the left and right swing levers. While you can
By pulling the operation rod backward and sliding, the hook for locking pin lock can be moved to the locking pin unlocking position.

[0005]

However, in the above connection locking mechanism, the locking pin locking hook and the locking pin locking hook are changed between the locking pin locking position and the locking pin unlocking position. Since the connecting rod and the swing lever are interposed between the bonnet attachment / detachment operation rod and the bonnet attachment / detachment operation rod, the operation of the bonnet attachment / detachment operation rod is not reliably transmitted to the locking pin locking hook, and Since the locking pin locking hook did not operate correctly, the detachable opening / closing side bonnet forming portion could not be detached.

Since the locking pins are not securely locked by the locking pin locking hooks, there is also a problem that the detachable opening / closing side bonnet forming portion falls off while the machine is running or working. .

[0007] Further, the above connection lock mechanism has a large number of parts, so that the number of man-hours for assembling work is increased, and the production efficiency is poor.

[0008]

SUMMARY OF THE INVENTION Therefore, in the present invention, a fixed bonnet forming portion of a front opening fixed to a vehicle body frame, and a detachable opening / closing side bonnet forming portion detachably attached to a front edge of the fixed bonnet forming portion. And a connecting lock mechanism for connecting and locking the detachable opening / closing side bonnet forming portion to the fixed side bonnet forming portion, wherein the connecting lock mechanism comprises left and right side walls of the detachable opening / closing side bonnet forming portion. The connecting arms are respectively extended forward from a pair of left and right vertical frames erected inside the fixed side bonnet forming portion, while the locking pins are projected inward to the respective side. A locking pin receiving portion opened bifurcated forward is formed at the front end, and a locking pin locking hook is locked at the tip of each connecting arm, and the locking pin receiving portion is locked to the locking pin receiving portion. Between a locking pin lock position where the locking pin is engaged to lock the locking pin, and a locking pin unlock position where the engagement with the locking pin is released and the locking pin is unlocked. A rice transplanter for riding, characterized in that the bases of the left and right bonnet attaching / detaching operation levers pivotally pivotally supported and the locking pin locking hooks are pivotally pivoted on the middle part up and down vertically. It does not provide a bonnet structure.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

A shown in FIG. 1 is a riding rice transplanter having a bonnet structure according to the present invention.

As shown in FIG. 1, the riding rice transplanter A has a planting section 2 connected to a self-propelled traveling section 1 via a lifting link mechanism 3.

As shown in FIG. 1, the traveling section 1 has a prime mover section 5 at the front of the body frame 4 and a mission section 6 at the rear of the body frame 4. 7 is mounted via a front axle case 8, while rear wheels 9 are mounted via a rear axle case 10 behind the transmission portion 6.

A body cover 12 forming a step portion 11 is stretched over the body frame 4 so as to cover the body cover 4.
The mission unit 6 and the like are covered by 12, and a hood 13 and an operating unit 14 that cover the motor unit 5 are provided on the vehicle body cover 12. Reference numeral 20 denotes a spare seedling mounting table.

As shown in the drawing, the driving unit 14 includes a motor unit 5.
A handle column 15 is erected immediately behind the handle column 15, a handle 16 is attached to the upper end of the handle column 15, a seat 17 is arranged immediately behind the handle 16, and left and right sides of the seat 17, and immediately after the seat 17, respectively. A main shift lever 18 and a lever 19 for planting raising and lowering and traveling auxiliary shift are provided. 21 is a main clutch pedal.

Further, as shown in FIG. 1, the planting section 2 mounts a seedling mounting table 31 on a planting mission case 30.
A planting claw 32 is attached to the planting mission case 30.
33 is a center float, 34 is a side float, 35 is a side-strip fertilizer, and 36 is a chemical sprayer.

In the above structure, the gist of the present invention lies in the structure of the bonnet 13. The structure of the bonnet 13 will be described below with reference to FIGS.

That is, the bonnet 13 is shown in FIGS.
As shown in FIG. 2, the hood 13 includes a fixed bonnet forming portion 40, a detachable opening / closing side bonnet forming portion 41, and a connection lock mechanism 42 for connecting and locking the two bonnet forming portions 40, 41. A meter panel 43 is attached to the upper end.

As shown in FIG. 2, the fixed side bonnet forming portion 40 includes left and right side walls 40 covering the left and right sides of the rear portion of the motor unit 5.
a, 40a and a rear wall 40b covering the rear of the handle column 15, and are fixed on the vehicle body cover 12. 70 is an insertion pin receiving portion.

As shown in FIG. 2, the removable bonnet forming portion 41 includes a front wall 41a covering the front of the motor unit 5, and right and left side walls 41b, 41b covering the left and right sides of the front of the motor unit 5. And is attached to the fixed-side bonnet forming portion 40 via a connection lock mechanism 42 so as to be detachable and openable. Reference numeral 71 denotes an insertion pin to be inserted into the insertion pin receiving section 70.

As shown in FIG. 2, the connection lock mechanism 42
On the left and right side walls 41b, 41b of the attaching / detaching opening / closing side bonnet forming portion 41, locking pins 44, 44 are respectively provided so as to face inward, and as shown in FIG. The connecting arms 46, 46 are respectively extended forward from a pair of left and right vertical frames 45, 45 erected on the body cover 12 so as to be positioned, and the connecting arms 46, 46 are opened bifurcated forward at the ends of the connecting arms 46, 46. While forming the locking pin receiving portions 46a, 46a,
Locking pin locking hooks 47, 47 are engaged with the distal ends of the connecting arms 46, 46, and the locking pins 44, 44 locked in the locking pin receiving portions 46a, 46a. The lock pin is locked between a lock pin lock position for locking the lock pins 44 and 44 and a lock pin unlock position for releasing the lock of the lock pins 44 and 44 when the engagement with the lock pins 44 and 44 is released. Each of the left and right bonnet attachment / detachment operation levers 48, 48, which are pivotally supported so as to be freely movable and are respectively attached to the hooks 47, 47 for locking pin locking, and which are pivotally supported so as to be able to swing up and down in the middle part, are left and right. As shown in FIG. 1, a lever insertion hole formed by connecting the base ends and forming the distal end operating portions 48a, 48a of the operating levers 48, 48 in the rear wall 40b of the fixed side bonnet forming portion 40.
It is formed so as to protrude backward from 49,49. Reference numeral 50 denotes a pivot pin for pivotally supporting the locking pin locking hook 47.

The bonnet attaching / detaching operation lever 48 is
The base-side middle portion is bent downward in a V-shape, and the distal-side middle portion is bent upward in an inverted V-shape.
A long hole 51 is formed at the end of the lever 48, and the end of the lever 48 is connected to the hook 47 for locking pin locking via the long hole 51 by a connecting pin 52. A lever support shaft 54 pivotally supports a reinforcing frame (not shown) attached to 46 so as to be vertically swingable.

In this embodiment, auxiliary bonnet attachment / detachment operation rods 55, 55 are separately provided below the left and right hood attachment / detachment operation levers 48, 48 so that the operator can easily operate the bonnet attachment / detachment operation rods. Any lever 48 or rod
55 allows the locking pin locking hook 47 to be locked and released.

That is, the base end of the swing arm 56 is pivotally supported integrally with the lever 48 on a lever support shaft 54 that pivotally supports a middle portion of the bonnet attaching / detaching operation lever 48, and the swing arm 56 extends downward. At the tip, the auxiliary bonnet attachment / detachment operation rod
The base end of the rod 55 is connected, and the distal end of the rod 55 projects rearward from a rod insertion hole 57 formed in the rear wall 40b of the fixed-side bonnet forming portion 40. 55a is a tip operation unit.

In FIG. 3, reference numeral 61 denotes an accelerator operating arm, 62 denotes an accelerator lever support shaft, 63 denotes an accelerator operating feedback wire, 64 denotes an arm stopper, and 65 denotes a wire receiving portion.

The embodiment of the present invention is configured as described above. According to this embodiment, the following operation and effect are produced.

That is, the hood forming section 41 for the detachable opening / closing side.
When the motor unit 5 is to be removed and maintenance is to be performed, first, the tip operating units 48a, 48a of the left and right bonnet attaching / detaching operation levers 48, 48 are turned upward, so that the leading end of the lever 48 is Hooks 47,4 for connecting locking pins
7 by turning it upwards to change the posture to the locking pin unlock position, so that the hooks 47, 47 are locked by the locking pins 44, 44.
The engagement is further released, and the locking pins 44, 44 are unlocked.

In this unlocked pin unlock state, the detachable opening / closing side bonnet forming portion 41 is moved forward, so that the locking pins 44, 44 attached to the bonnet forming portion 41 are locked pin receiving portions 46a, 46a. The insertion pins 71, 71 attached to the lower portion of the front end opening edge of the detachable opening / closing side bonnet forming portion 41 are further unlocked, and the insertion pin receiving portion attached to the lower portion of the rear end opening edge of the fixed side bonnet forming portion 40. By pulling out the bonnet forming portion 41 from the fixed side, the bonnet forming portion 41 can be removed from the fixed side.

When the detachable opening / closing hood forming section 41 is attached to the fixed side bonnet forming section 40 after maintenance of the motor unit 5 is completed, the lower part of the rear end opening edge of the detachable opening / closing side bonnet forming section 41 is required. Insertion pins 71, 71 attached to
Into the insertion pin receiving portions 70, 70 attached to the lower portion of the front end opening edge of the fixed side bonnet forming portion 40, and lock the locking pins 44, 44 attached to the detachable opening / closing side bonnet forming portion 41. After being locked to the pin receiving portions 46a, 46a, the distal end operating portions 48a, 48a of the left and right bonnet attaching / detaching operation levers 48, 48 are rotated downward, so that the locking pins connected to the distal ends of the levers 48, 48 are turned down. By rotating the locking hooks 47, 47 downward to change the posture of the hooks 47, 47 to the locking pin locking position, the hooks 47, 47 are engaged with the locking pins 44, 44 from above. Then, the locking pins 44, 44 are locked.

In the locking pin locked state, the detachable opening / closing side bonnet forming portion 41 does not fall off from the fixed side bonnet forming portion 40.

In this manner, the attachment / detachment operation of the detachable opening / closing side bonnet forming portion 41 can be performed smoothly and reliably. It is also possible to prevent the occurrence of a problem of falling off from the forming section 40.

Further, since the locking pin locking hook 47 and the bonnet attaching / detaching operation lever 48 are directly connected, the number of parts can be reduced, and therefore the number of assembling steps can be reduced. Thus, the production efficiency of the machine can be improved, and the production cost can be reduced.

[0032]

According to the present invention, the following effects can be obtained.

That is, in the present invention, the locking pin locking hook can be directly changed between the locking pin locking position and the locking pin unlocking position by the bonnet attaching / detaching operation lever. Engagement / release of the locking pin by the locking hook can be reliably performed.

Accordingly, the attaching / detaching operation of the bonnet forming portion can be smoothly and reliably performed, and the occurrence of the problem that the attaching / detaching bonnet forming portion falls off while the machine is running or working can be prevented. be able to.

Further, since the locking pin locking hook and the bonnet attaching / detaching operation lever are directly connected, the number of parts can be reduced, and therefore, the number of assembling steps can be reduced. The manufacturing efficiency of the machine can be improved, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter having a bonnet structure according to the present invention.

FIG. 2 is an exploded perspective view of the bonnet.

FIG. 3 is an explanatory side view of a connection lock mechanism.

[Explanation of symbols]

 A Passenger rice transplanter 1 Running part 2 Planting part 3 Elevating link mechanism 4 Body frame 13 Bonnet 40 Fixed side bonnet forming part 41 Removable opening / closing side bonnet forming part 42 Connection locking mechanism

Claims (1)

(57) [Scope of request for utility model registration] 1. A fixed bonnet forming portion having a front opening fixed to a vehicle body frame, a detachable opening / closing bonnet forming portion detachably attached to a front edge of the fixed side bonnet forming portion, and a detachable opening / closing bonnet forming portion. In a bonnet structure of a riding rice transplanter having a connecting lock mechanism for connecting and locking to a fixed side bonnet forming portion, the connecting lock mechanism faces locking pins inwardly to left and right side walls of the detachable opening / closing side bonnet forming portion, respectively. The connecting arm extends forward from a pair of left and right vertical frames erected inside the fixed side bonnet forming part, and the front end of the connecting arm is bifurcated to the front. Form a locking pin receiving part, hook the locking pin lock on the tip of each connecting arm,
A locking pin lock position for locking the locking pin by engaging with the locking pin locked by the locking pin receiving portion, and unlocking the locking pin by releasing the engagement with the locking pin. The bases of the left and right bonnet attachment / detachment operation levers that pivotably support the locking pin lock hooks so that they can swing up and down The bonnet structure of a riding rice transplanter characterized by being connected.