JPH1042651A - Grounding wheel supporting apparatus for mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grounding wheel supporting apparatus for a mower, capable of reaping lawn grass to the edge of a levee without being damaged by the buffer action of a spring even when a mower deck is brought into contact with an obstacle such as a levee. SOLUTION: Grounding wheels 3 which ground and rotate at the front part of a mower deck 2 equipped with a blade 1 on a shaft are elastically forced by a spring 4 so as to be moved to a front position F of the mower deck 2 and are supported by a link arm 5 so as to be rocked to a rear side position S against the spring 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mower grounding wheel support device, and can be used for a walking type hand mower, a front mower mounted on the front side of a tractor, and the like.

[0002]

In the case of a hand mower or a front mower, the mower deck is located at the front portion, and at the front end portion in the direction in which the mowing proceeds, the mower deck is likely to come into contact with and hit a ridge, a tree, or other structures, causing damage. Susceptible to

[0003]

According to the present invention, a blade 1 is provided.
The spring 4 urges the grounding wheel 3, which rotates at the front of the mower deck 2, to move to the front position F of the mower deck 2, and swings to the rear side position S against the spring 4. The structure of the mower's grounding wheel support device supported by the link arm 5 is made possible.

[0004]

According to the present invention, the grass is cut by the rotation of the blade 1 by the propulsion of the mower deck 2. At this time, mower deck 2
The ground contact wheel 3 is moved by the spring 4 to the front side position F of the turf to maintain the lawn mowing height constant. When the ground contact wheel 3 contacts the ridge or the like and is pushed forward during mowing promotion, the contact force causes the contact wheel 3 to swing to the rear side position S against the spring 4. Therefore, the front end of the mower deck 2 approaches the edge of the ridge, and the mowing by the blade 1 is performed.

Since the grounding wheel 3 is at the front position F of the mower deck 2 during the mowing operation, the mower deck 2 may be damaged by the buffering action of the spring 4 even if it comes into contact with an obstacle such as a ridge. If the mower deck 2 is pushed against the resilience of the spring 4, the grounding wheel 3 is moved to the rear side position S.
Then, the front end of the mower deck 2 is moved closer to the ridge and the like, so that the remaining area of the turf grass can be reduced, and a safe mowing operation can be performed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a hand mower, an engine 6 is mounted on an upper part of a mower deck 2, a blade 1 is provided on a lower end of a blade shaft 7 driven by the engine 6 on a lower part, and a pair of right and left grounding wheels 3 is provided on a front part. A drive wheel 8 driven by the power of the engine 6 is disposed at the rear, and a steering handle 9 and turfgrass discharged from a weed opening 10 at the rear of the mower deck 2 are accommodated at an upper rear portion. A collector 11 is provided.

The grounding wheel 3 is symmetrically formed by supporting a link arm 5 consisting of a pair of front and rear parallel links on the upper surface of a bracket 12 fixed to the upper surface of the front part of the mower deck 2 so as to swing back and forth. A pivot plate 13 for pivotally supporting the grounding wheel 3 is pivotally attached to the distal end of the link arm 5. A spring 4 is provided between the left and right link arms 5, and is always drawn toward the front position F. Also, the left and right ends of a bumper 14 made of a leaf spring material may be connected between the left and right pivot support plates 13 so that the elasticity of the bumper 14 causes the grounding wheel 3 to resiliently move toward the front position F. or,
Conversely, it is also possible to cause the rear side position S to pop. Reference numeral 15 denotes a stopper for stopping the swing of the link arm 5.

Reference numeral 16 denotes a cutting height adjusting lever, which is provided on the left and right pivot support plates 13 and integrally with a bracket 17 so as to be rotatable back and forth around an adjusting shaft 18.
The adjustment position can be fixed by engaging 6 with the rack 19 of the support plate 13. Axle 20 of the ground wheel 3
Is mounted on the bracket 17, and the axle 20 is rotated up and down around an adjustment shaft 18 by the front-rear rotation by the cutting height adjustment lever 16 to change and adjust the height of the grounding wheel 3 with respect to the mower deck 2. Can.

Reference numeral 21 denotes a rear wheel transmission case on which a rear axle 22 is mounted. The rear wheel transmission case 21 is interlocked with the engine 6 via a transmission shaft 23.
Numeral 24 is a cutting height adjusting lever, which vertically rotates a bearing bracket 25 bearing the rear axle 22 around an adjusting shaft 26,
The height of the rear wheels 8 at both ends of the rear axle 22 is adjusted by engaging with the rack 27 on the rear side surface of the mower deck 2.

In a normal lawn mowing operation, the ground contact wheel 3 at the front side position F is in a state of protruding to the front side of the mower deck 2, and the bumper 14 is in a state of being curved and protruding forward. Therefore, when the front of the mower deck 2 comes into contact with a ridge or the like, the grounding wheel 3 and the bumper 14 and the like serve as cushioning members and do not directly contact the mower deck 2. After the contact wheel 3 and the bumper 14 abut against the ridge and the like, when the pressing force is further increased by the drive propulsion of the drive wheel 8 or the propulsive force of the steering handle 9 or the like, the pressing force is increased against the tensile force of the spring 4. The left and right link arms 5 are pushed outward and the ground contact wheel 3 is moved from the front position F to the rear side position S, and the mower deck 2 is moved.
Is approached to the ridge and the blade 1 is rotated to cut the ridge.

When the mower is cut off and the mower is separated to the rear side, the resistance of the ground contact wheel 3 and the like is lost, and the tension force of the spring 4 causes the rear side position S to move to the front position F.
Return to. 3 to 6, the points different from the above example are as follows.
A hopper 28 is provided on the upper part of the mower deck 2 such that the hopper 28 can be turned forward by a bracket 29 and a tipping shaft 30 and the like. The turfgrass discharged from the hopper 10 is conveyed by holding it. Since the hopper 28 for storing turf grass is separated from the rear end of the handle 9 of the operator, it is hard to receive dust.

The belt shooter 31 has a pair of front and rear long and short flat belts 32, 33 stretched in a belt case 34, and a lower end of the rear long belt 32 is attached to the rear side of the discharge port 10 of the mower deck 2. To the outlet 10
Receiving the turfgrass discharged from the hopper, the turfgrass is conveyed upward, and can be lifted by being sandwiched between a short belt 33 on the front side. The upper end of the belt shooter 31 is seen through the shooter 35 to the front lower hopper 28.

The transmission of the belt shooter 31 is driven from an output shaft 43 in the rear wheel transmission case 21 for transmitting the drive wheels 8. The transmission between the input shaft 36 of the rear wheel transmission case 21 and the output shaft 37 of the engine 6 is transmitted by a belt 38 and a tension clutch pulley 39. Between the input shaft 36 and the rear axle 22, a shift key 40 operated by a shift lever of the steering handle 9 and a shift gear 41 engaged by the shift key 40 are arranged.
A traveling clutch 42 is provided on the input shaft 36. The output shaft 43 is integrated with a pulley 45 for extending the lower end of the flat belt 32 by being interlocked with a gear 44 from the input shaft 36. The shaft 47 of the pulley 46 that stretches the lower end of the flat belt 33 is connected to the output shaft 43 by a belt 48, a shaft 4.
9, transmitted through the gear 50 and the like. When stopping the running of the mower and the driving of the belt shooter 31, the clutch pulley 39 may be turned off. In order to stop traveling or shift the shift key 40 for shifting, the travel clutch 42 may be operated.

The front short belt 33 is configured such that a pulley 46 shaft 47 at the lower end can swing back and forth around a shaft 49 via a gear case 51, and a rear belt 32 by a spring 52.
Pulled to the side. The gear case 51 is provided with the gear 50 as a shaft, and is rotatably supported by the frame 53 such as the mower deck 2 around the shaft 49 times.

[Brief description of the drawings]

FIG. 1 is a plan view of a hand mower.

FIG. 2 is a side view thereof.

FIG. 3 is a side view showing another embodiment.

FIG. 4 is a plan view thereof.

FIG. 5 is a perspective view of a part thereof.

FIG. 6 is a partial transmission diagram.

[Explanation of symbols]

 Reference Signs List 1 blade 2 mower deck 3 grounding wheel 4 spring 5 link arm F front side position S rear side position

Claims (1)

[Claims] A spring (4) springs a ground wheel (3) rotating at the front of a mower deck (2) on which a blade (1) is mounted to move to a front position (F) of the mower deck (2).
A mower grounding wheel support device supported by a link arm 5 swingably to a rear side position S against the spring 4.