JP2741171B2 - Self-propelled mower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled mowing machine in which a mowing blade is provided at a lower portion of an airframe.

[0002]

2. Description of the Related Art Self-propelled mowers having a mowing blade disposed below the fuselage are frequently used because the length of the fuselage can be reduced and the safety can be improved. In some types of self-propelled mowers, the rotation axis of the mowing blades is almost fixed inside the fuselage, and when mowing work is performed on a field or orchard with a self-propelled mower, In many cases, the lower branches in the vicinity hinder the traveling of the traveling vehicle and hinder the mowing work under the canopy in a field or an orchard.

According to the present invention, a mowing blade is vertically attached to a moving body, and the moving body is configured to be slidably fixed to one side of the machine body and fixed thereto, and a mowing blade protruding from one side of the machine body is provided. An object of the present invention is to provide a self-propelled mower that is rotated by a power transmission mechanism and solves the above-mentioned disadvantage.

[0004]

The gist of the present invention will be described with reference to the accompanying drawings.

[0005] A support guide frame 3 is provided below the body 1,
A moving body 4 provided with a mowing blade 2 is provided below the supporting guide frame 3, and the moving body 4 is provided between the supporting guide frame 3 and the moving body 4 using the supporting guide frame 3 as a guide. A self-propelled mower A provided with a slide mechanism a for sliding in a retractable manner and a fixing mechanism b for fixing the slide mechanism in a predetermined position.
Te, the main shaft pulley 10 which rotates to separate the power frequency from the engine 8 installed in the machine body 1 is provided on the machine body 1, the main shaft pulley 10
Is provided on the rotating shaft 5 of the mowing blade 2, and a tension pulley 13 is arranged on an endless drive belt 12 suspended around the main shaft pulley 10 and the rotating pulley 11, so that the rotating shaft 5 of the mowing blade 2 slides. Power transmission mechanism c that can transmit power
And a self-propelled mower.

[0006] A support guide frame 3 is provided below the body 1.
And a mowing blade 2 is attached to a lower portion of the support guide frame 3.
Between the supporting guide frame 3 and the moving body 4
The moving body 4 is supported by the support frame 3 as a guide.
A slide mechanism a that slides in and out of one side and a predetermined
Self-propelled mower A provided with a fixing mechanism b for fixing at a position
A main bearing 7 having a lower end protruding from the lower surface of the support guide frame 3 at a substantially central portion of the support guide frame 3 is erected, and the main bearing 7 is mounted on the body 1 by an engine 8. the rotary spindle 9 to rotate preparative power minute and vertically, the rotating main shaft 9
A main shaft pulley 10 is attached to the lower end of the main body, and bearings 6.6 having rotating shafts 5 suspended vertically on the moving body 4 are provided.
5, the lower end of the movable body 4 is protruded from the lower surface of the movable body 4, and the mowing blades 2.2 are attached to the protruding shaft ends.
11 and 11, a tension pulley support 14 is fitted on the protruding end of the main bearing body 7, and the tension pulley support 14
A tension pulley 13 is provided at the projecting end of the endless drive belt 12, and an endless drive belt 12 is suspended around the main shaft pulley 10, the left and right rotary pulleys 11, and the tension pulley 13. The power transmission mechanism c is provided so as to be detoured while being strongly pressed, and can be rotated by power even when the rotating shafts 5, 5 of the mowing blades 2, 2 slide.
The present invention relates to a self-propelled mower.

[0007]

The function of claim 1 will be described.

While the self-propelled mower A is running, power is taken from the engine 8 and the main shaft pulley 10 is rotated. The power transmission device c causes the main shaft pulley 10 and the rotary pulley 11 to rotate.
Since the endless drive belt 12 is suspended by the tension pulley 13, the rotation driving force of the main shaft pulley 10 is transmitted to the rotation pulley 11, and the rotation shaft 5 provided on the rotation pulley 11 is rotated. Rotating, and the mowing blade 2 provided on the rotating shaft 5
The mowing work of fields and orchards is performed by the rotation of.

At this time, when the lower branch around the tree becomes an obstacle to the traveling of the traveling vehicle and hinders the mowing work under the canopy,
The moving body 4 is moved toward the side of the machine body 1 by using the support guide frame 3 as a guide by the slide mechanism a so that the mowing blade 2 is projected to one side of the machine body 1. At this time, since the endless drive belt 12 hung by the power transmission mechanism c between the main shaft pulley 10 and the rotary pulley 11 is hung by the tension pulley 13 even while sliding, the rotational power of the main shaft pulley 10 is rotated. The rotation is transmitted to the pulley 11 and the rotation shaft 5 rotates, so that the mowing blade 2 attached to the rotation shaft 5 performs a mowing operation under a canopy in a field, an orchard, or the like.

The operation of claim 2 will be described.

The self-propelled mower A is run and the engine 8
When the rotating spindle 9 is rotated by separating more power, the spindle pulley
10 rotates, and the endless drive belt 12 suspended around the main shaft pulley 10 and the left and right rotary pulleys 11 by the power transmission mechanism c is stretched and rotated in a detour state while the back surface thereof is strongly pressed by the peripheral edge of the tension pulley 13. Therefore, the rotating power of the engine 8 is transmitted to the rotating shafts 5.5, and the mowing blades 2.2 rotate to perform mowing work in a field or an orchard.

At this time, when the lower branch of the tree obstructs the traveling of the traveling vehicle and hinders the mowing work under the tree crown, the moving body 4 is supported by the supporting guide frame 3 as a guide to the side of the body 1. Slide the blade so that one of the mowing blades 2 projects to the side of the body 1. At this time, the endless drive belt 12 suspended around the main shaft pulley 10 and the left and right rotary pulleys 11 by the power transmission device c is maintained in a detour state while being slid by the peripheral edge of the tension pulley 13 while being stretched in a detour state. The rotation power of the engine 8 is transmitted to the rotary pulleys 11 and 11, and the rotation of the rotary shafts 5.5 fixed to the rotary pulleys 11 causes the mowing blades 2.2 to rotate, so that the fields and orchards are rotated. The mowing work under the canopy can be carried out.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a preferred embodiment of the present invention.

A support guide frame 3 is provided below the body 1,
A moving body 4 provided with a mowing blade 2 is provided below the supporting guide frame 3, and the moving body 4 is provided between the supporting guide frame 3 and the moving body 4 using the supporting guide frame 3 as a guide and the side of the machine body 1. And a fixing mechanism b for fixing the moving body 4 at a predetermined projecting position.

In the illustrated embodiment, the supporting guide frame 3
The frame body 3 ₂ angle shape is attached to the front and rear end portions of the lower surface of the substrate 3 ₁ of rectangular shape, the guide bar 3 ₃ of round bar shape is provided at the lower end of the front and rear of the frame 3 ₂ vertical up plate configure Te, bored slide lack recess 16 of predetermined length to the left and right at a predetermined height from the apex of each guide bar 3 ₃ to the frame body 3 ₂ before and after. The moving body 4 at the bottom of the support guide frame 3 is provided, a lightweight hollow rectangular shape type steel along the outer contour of the base 4 ₁ on the base 4 ₁ of substantially rectangular shape seen this moving member 4 from above surrounded by the formed margin frame 4 ₂ constitute, with laterally disposed a wheel bearing 17 and the center slightly to the right margin frame 4 ₂ of left side end portion of the front and rear, stop the base of the wheel shaft 18 on the wheel bearing 17 wear, and the guide wheel 19 rotatably pivotally mounted to the projecting end of the wheel shaft 18, the tread guide wheels 19 of the upper end and the guide bar 3 ₃ of the support guide frame member 3 slides missing recesses 16 and a circular arc top is provided so as to guide rolls constitute a slide mechanism a, when引動mobile 4 on one side of the right and left, the moving body 4 is on one side of left and right support guide frame 3 by a slide mechanism a Provide to slide.

A fixing mechanism b for fixing the movable body 4 to the support guide frame 3 when the movable body 4 is slid to one side of the support guide frame 3 will be described.

[0017] The locking rod sliding bearings 20 provided at the substantially central portion of the frame edge 4 ₂ of the front portion of the moving body 4, when the moving body 4 is substantially at the center of the support guide frame 3, to the locking rod sliding bearing 20 A channel-shaped bracket 21 is fastened to the front side of the opposing support guide frame 3, a rod-shaped lock rod 22 is slidably inserted into a lock rod slide bearing 20, and the tip of the lock rod 22 is inserted into the bracket 21. Perforated locking holes
21 ₁ to penetrate to provided to secure the movable body 4 to the support guide frame 3.

A bracket 21 of the same shape as above is fixed to the front right end portion of the support guide frame 3 and the moving body 4 is pulled rightward so that the moving body 4 slides to the right of the support guide frame 3. when the tip of the lock rod 22 is provided so as to fix the moving body 4 at that position to penetrate the locking holes 21 ₁ of the bracket 21 to the support guide frame 3. The lock bearings 23 is erected on the front right side of the base 4 ₁ of the movable body 4, the lock bearing 23
To be secured to the base portion of the support shaft 24 projecting to the upper end above the base 4 _1, the boss portion of the lock arm 25 of the L-shaped when viewed from above the support shaft 24 to be freely horizontally rotated Fit, lock arm
The arm 25 ₁ of one of the 25 to extend in a substantially central portion of the base 4 ₁ pivotally mounted to the other end of the lock rod 22 to the extension end, the moving body 4
The margin frame 4 ₂ and laterally disposed slide bearing 26 on the right side of the front toward the slide rod 27 to the slide bearing 26 slidably fitted to form the front end slightly larger diameter in the the large diameter portion pivotally to the other arm 25 ₂ of the front end of the locking arm 25.
A lock lever 28 is pivotally mounted on the other end of the slide rod 27, the end of the slide lever 26 is formed in a cam shape at the end of the slide bearing 26 at the head of the lock lever 28, and the diameter of the tip of the slide rod 27 fitted into the slide bearing 26 is increased. Slide rod between the shoulder of the section and the slide bearing 26
When the compression spring 30 is fitted on the slide lever 27 and the slide rod 27 is constantly urged to the left, and the grip portion of the lock lever 28 is rotated approximately 90 ° counterclockwise as viewed from above, the head of the lock lever 28 The slide rod 27 is pulled to the right by the cam shape and moves, whereby the L-shaped lock arm 25 rotates counterclockwise about the support shaft 24 so that the tip of the lock rod 22 locking moving body 4 and the support guide frame 3 exits from the locking hole 21 ₁ is provided so as to be released.

A main shaft pulley 10 that separates power from an engine 8 mounted on the body 1 and rotates is provided on the body 1, and a rotary pulley 11 that is rotated by the main shaft pulley 10 is provided on the rotation shaft 5 of the mowing blade 2. A tension pulley 13 is arranged on an endless drive belt 12 suspended around a pulley 10 and a rotary pulley 11 to constitute a power transmission mechanism c capable of transmitting power even when the rotating shaft 5 of the mowing blade 2 slides.

In the illustrated embodiment, bearings 6, 6 are erected on the left and right sides of the moving body 4, and the rotating shafts 5, 5 are rotatably fitted into the left and right bearings 6, 6, and the rotating shafts 5 are provided. The lower end of 5 protrudes from the lower surface of the moving body 4, and the mowing blades 2.2
And the rotating pulleys 11 are fixed to the upper ends of the rotating shafts 5. Nearly main bearing member 7 to the rear side of the central portion erected protrudes the lower end of the lower substrate 3 ₁ of the support guide frame member 3 of the support guide frame 3, a flange portion provided on the protruding end, the main bearing A rotary main shaft 9 is erected on the body 7 so as to be horizontally rotatable, and a lower end of the main shaft is protruded from the main bearing body 7.
The work pulley 32 is fixed to the upper end of the rotating spindle 9.

[0021] outer diameter of the main bearing body 7 between the flange portion of the lower end of the support guide frame member 3 of the substrate 3 ₁ of the lower surface and the main bearing member 7,
The tension pulley support 14 is fitted to the ring-shaped tension pulley support 14 so that the tension pulley support 14 can be horizontally rotated on the main bearing 7. Two arms 14 are attached to the tension pulley support 14.
_1, 14 ₂ projecting radially, and fastening the base portion of the tension pulley shaft 33 to one arm 14 ₁ and vertically at the other end downward, freely tension pulley 13 to the vertical portion horizontally rotated To be fitted. And vertically the fastening pin 34 in place of the position of the lower surface of the substrate 3 ₁ of the support guide frame 3, the tension spring 35 between the other arm 14 ₂ of the fastening pin 34 and the tension pulley support 14 Erect.

The main shaft pulley 10 and the left and right rotary pulleys 11
An endless drive belt 12 is suspended around a tension pulley 13 and a tension pulley 13 as shown in FIG. So that the end of the endless drive belt 12 is constantly stretched to transmit the rotational power of the main shaft pulley 10 to the left and right rotary pulleys 11. Provide.

A power distribution pulley 37 is provided on an output shaft of a distributor 36 which rotates by dividing the power from the engine 8, and a drive belt 38 is stretched between the power distribution pulley 37 and the work pulley 32.

Reference numeral 39 denotes a cover for the mowing blade provided on the moving body 4.

The left and right ends of the support guide frame 3 and the body 1
The left and right pair of pantograph mechanism d between the left and right ends is provided, the pivot 41 to the rear lower side of the left and right opposed support leg d ₁ of the inner side of the pantograph mechanism d is provided, on the left and right rear side of the body 1 of the driver's seat 42 of the The brackets 43 are erected, the lever shaft 44 is rotatably hung over the brackets 43, 43, the boss portion of the mowing blade raising / lowering lever 45 is fixed to the lever shaft 44, and the operating lever is moved from the boss portion. 45 ₂ and projecting forwardly pivotally both ends of the operation link 46 between the fulcrum 41 and the projecting end. A plurality of locking grooves 47 (see FIG. 5 in FIG. 5) for locking the rod portion 451 of the mowing blade raising / lowering lever 45 to the body ₁ to regulate the height of the mowing blade 2 above the ground.
And attaching a mowing blade vertical position setting bracket 48 having a Ke), mowing blades desired locking of mowing blades elevation positioning bracket 48 rod portion 45 ₁ of the mowing blade lifting lever 45 Tilt the head in front of the lift lever 45 When locked in the groove 47, the support guide frame 3 descends below the body 1 by the pantograph mechanism d and regulates the height of the mowing blade 2 above the ground.

In the drawing, reference numeral 49 denotes wheels, and 50 denotes a steering handle.

Since the present embodiment is configured as described above, when the operator sits on the driver's seat 42 to drive the engine 8, the power is separated from the distributor 36 and the power sorting pulley 37 is rotated. Since the work pulley 32 is rotated by the drive belt 38,
The rotating spindle 9 and the spindle pulley 10 rotate, and the endless drive belt 12
As a result, the left and right rotary pulleys 11 rotate. Always maintained in stretched state this time tension pulley support 14 the other arm 14 ₂ endless drive belts 12 and strongly pressed the back of the periphery of the tension pulley 13 by 35 the urging force of the tension spring was attached and when the endless driven belts 12 on the Accordingly, the rotational power of the engine 8 is transmitted to the rotary pulleys 11 and the mowing blades 2.2 are rotated by the rotary shafts 5.5 fixed to the rotary pulleys 11.

[0028] Then, when engaging the mowing blade lifting lever 45 to a desired locking groove 47 of the mowing blade vertical position setting bracket 48 to the rod portion 45 ₁ of the mowing blade lifting lever 45 tilted forward, the support guide frame by pantograph mechanism d Since the body 3 descends to a desired position and maintains the height of the mowing blades 2.2 above the ground, the aircraft 1 is driven at that height to perform mowing work in an orchard or a field.

At this time, if the lower branch around the tree hinders the running of the machine 1 and hinders the mowing work in the field under the canopy, the machine 1 stops running and the power from the distributor 36 is removed. After cutting off, the height of the mowing blades 2 is raised by the pantograph mechanism d. Then lock lever 28 and the moving body 4 of the tip of the lock rod 22 by about 90 ° rotated counterclockwise so get out from the locking hole 21 ₁ of the bracket 21 support guide frame 3
When the movable body 4 is pulled to the right, the guide wheels 19 protruding from the front and rear of the movable body 4 guide and roll in the left and right sliding long grooves 16 provided in the support guide frame 3. As a result, the moving body 4 moves to the right, and the right mowing blade 2 projects to the right of the body 1.

At this time, the rotary pulley 11 provided on the moving body 3
・ 11 also moves at the same time, and the rotating pulleys 11 ・ 11 and the spindle pulley 10
The endless drive belt 12 suspended from the tension pulley 13 shifts from the tensioned state in FIG. 2 to the tensioned state in FIG. 3 while maintaining the tensioned state by the urging force of the tension pulley 13. Returning the lock lever 28 to the original state in this state, to secure the distal end of the lock rod 22 to penetrate to the moving body 4 in locking holes 21 ₁ on the right side of the bracket 21 to support guide frame 3, mowing blade lifting lever 45 Is operated to lower the mowing blades 2 and 2 so that the airframe 1 is run again to carry out mowing work under a canopy in an orchard or a field.

[0031]

Since the present invention is constructed as described above, it is possible to carry out mowing work in a field or the like in the same manner as in a conventional self-propelled mowing machine, and a lower branch around a tree in a field or an orchard is used as a traveling vehicle. toward the even if the failure of the traveling slide mechanism fixed mechanism mowing blade to the side of the fuselage Ru slid projects. Spindle pulley This time power transmission mechanism
The endless drive belt suspended around the
Do not force the back of the pulley even when sliding
Since it is maintained in a stretched state in a detour state, the engine
Is transmitted to the rotating pulley, and the rotating pulley
Since it rotates the mowing blade by the rotation of the rotary shaft which is secured an efficient and practical soo the self-propelled mower mowing such fields and orchards under canopy can be performed.

[Brief description of the drawings]

FIG. 1 is a side view in which a main part of the present embodiment is partially cut away.

FIG. 2 is an explanatory plan view of a main part of a power transmission mechanism when a mowing blade is at a normal position.

FIG. 3 is a plan view for explaining a main part of a power transmission mechanism when a mowing blade is at a position protruding to the side of the machine body.

FIG. 4 is a rear view in which a part of a main part of the slide mechanism is cut away.

FIG. 5 is a perspective view of the above.

[Explanation of symbols]

 Reference Signs List A self-propelled mower a slide mechanism b fixing mechanism c power transmission mechanism 1 body 2 mowing blade 3 support guide frame 4 moving body 5 rotating shaft 6 bearing body 7 main bearing body 8 engine 9 rotating spindle 10 spindle pulley 11 rotating pulley 12 Endless drive belt 13 Tension pulley 14 Tension pulley support

Claims (2)

(57) [Claims] 1. A support guide frame is provided at a lower portion of an airframe, a movable body having a mowing blade is provided at a lower portion of the support guide frame, and a movable guide is provided between the support guide frame and the movable body. A self-propelled mowing machine equipped with a slide mechanism that slides into and out of one side of the fuselage using a frame as a guide and a fixing mechanism that fixes it at a predetermined position, and separates power from an engine installed on the fuselage. A main shaft pulley rotating on the main body is provided on the body, a rotary pulley rotated by the main shaft pulley is provided on a rotary shaft of the mowing blade, and a tension pulley is disposed on an endless drive belt suspended on the main shaft pulley and the rotary pulley. A self-propelled mower characterized in that the power transmission mechanism is capable of transmitting power even when the rotating shaft is sliding. 2. A support guide frame is provided at a lower portion of the body, and
A moving body with a mowing blade attached to the lower part of the support guide frame
Support the moving body between the support guide frame and the moving body.
Guide frame slides to one side of the fuselage as a guide
A slide mechanism to fix the body and a fixing mechanism to fix the body to a predetermined position.
A self-propelled mowing machine provided with a main bearing body having a lower end protruding from a lower surface of the support guide frame at a substantially central portion of the support guide frame, and the main bearing is mounted on the body. and vertically rotating spindle rotating in preparative power minute from the engine, a main shaft pulley is attached to the lower end of the rotation <br/> spindle, provided with a bearing member that vertically rotating shaft to the left and right on the mobile A lower end of the rotating shaft protrudes from the lower surface of the moving body, a mowing blade is attached to an end of the protruding shaft, a rotating pulley is attached to an upper end of the rotating shaft, and a tension pulley is attached to a protruding end of the main bearing body. A tension pulley is provided at the protruding end of the tension pulley support, and an endless drive belt is suspended around the main shaft pulley, the left and right rotary pulleys, and the tension pulley. The rotating shaft of the mowing blade is provided with Self-propelled mower, characterized by being configured to power transmission mechanism can be rotated by the power even during de.