JP2994242B2 - Thatch collection device in thatch collection vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a car that collects swarf cut by a lawn mower.

[0002]

2. Description of the Related Art In golf courses and the like, in order to control the lawn on a course with good quality, maintenance work such as mowing a lawn with a lawnmower and adjusting the height of the lawn is performed regularly.
After the lawn mowing, a large amount of thatch is generated, but if the neglect is left untouched, the growth of the turf will be hindered and the competition will be hindered. I do. Thatch collecting vehicles rotate the horizontally mounted thatch collecting rotor to rake up the ground thatch with radial blades and suck it up with a fan.However, conventionally, if there is unevenness on the ground, the Because the blade does not reach the bottom of the recess,
There has been a problem that thatch of the concave portion remains without being collected.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to collect and clean all courses of a recessed ground that could not be collected in the prior art.

[0004]

In order to achieve the above object, according to the present invention, a bent portion is formed by interposing a universal joint in the middle of the rotating shaft of the thatch collecting rotor, and both right and left ends of the rotating shaft can be freely attached to the machine frame. Bearing via a joint, furthermore, the bent portion is supported on an elevating frame, the rear part of the elevating frame is rotatably connected to the support shaft of the machine frame, and a free-wheeling grounding wheel is provided on the front part of the elevating frame. Attach. In addition, two such collecting collector rotors are provided in parallel in the front-rear direction, and the blades extending radially from their rotation axes are arranged so as to be alternately arranged on the left and right sides of the front collecting rotor and the rear collecting rotor. A blade overlap portion is formed. And while connecting the bending part of both rotating shafts to the lifting frame, respectively, the left and right ends of both rotating shafts are respectively supported on the machine frame via universal joints, and the blades of the blade overlapping portion are connected to the front thatch collecting rotor. Both the one and the one of the rear thatch collection rotor have their rotation axes rotated in opposite directions so that they rotate in the ascending direction.

[0005]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a Thatch truck embodying the present invention, and FIG. 2 is a side view thereof. In front of the self-propelled vehicle 1, there is provided a truck 3 on which a collecting device 29 for collecting thatch and a conveying fan device 2 for conveying the collected thatch by air are provided. The bogie 3 adjusts the height of the wheels in advance, and runs at a predetermined height along the ground according to the inclination and unevenness of the ground. At the rear of the vehicle 1, a mounting frame 5 is horizontally mounted via a connecting portion 4. Cyclone 7 on mounting frame 5
Is provided. A hopper 8 is provided below the cyclone 7, and a discharge port 9 having a shutter discharge shutter 10 at a lower end of the hopper 8.
, And suspends the Thatch storage bag 11 whose upper part is opened below it. A preliminary discharge port 12 and a preliminary discharge duct 13 are provided at the upper part of the cyclone 7, and the lower end of the preliminary discharge duct 13 is inserted into a spare thatch storage bag 11 which is suspended downward and opened at the upper part.

FIG. 3 is a side view showing the configuration of the collecting device and the conveying fan device. The carriage 3 has a pair of supporting front wheels 14 whose height can be adjusted at the front and a pair of fixed rear wheels 15 at the rear.
The truck 3 is connected to the vehicle 1 by an arm 16 projecting forward of the vehicle 1 and a machine frame support rod 17. And while making the cart 3 rotatable about the axis of the arm 16,
By making the machine frame support rod 17 rotatable around an axis orthogonal to the axis of the arm 16, the bogie 3 is connected to the self-propelled vehicle 1 in a freely rolling and pitching manner. A box-shaped machine frame 19 having an open bottom surface is provided on the carriage 3, and the transport fan device 2 is mounted on the top surface thereof, and a suction port of the transport fan device 2 is formed inward. An elevating frame 20 is provided at the center of the machine frame 19 in parallel with the left and right side walls 18 of the machine frame 19, and a support shaft 36 provided at the rear portion of the machine frame 19 in parallel with the axle of the fixed rear wheel 15. Is pivotally supported at its rear end.

FIG. 4 is a side view showing the details of the connection mechanism between the machine frame and the elevating frame. A grounding wheel support 30 is formed at the front end of the elevating frame 20 to protrude upward.
The grounding wheel 21 is attached to the front of the vehicle so that the height can be adjusted. Behind the grounding wheel support 30, a connecting pin mounting base 38 is integrally erected on the upper surface of the elevating frame 20, and one end of the connecting pin 32 is pivotally supported by the supporting pin 39 on the connecting pin mounting base 38. On the other hand, a connecting pin seat 40 that projects horizontally forward is provided on the front surface of the machine casing 19, and a hole that penetrates the connecting pin seat 40 in a vertical direction and through which the connecting pin 32 is inserted is provided. Furthermore, split pin holes (not shown) are provided at two positions above and below the connecting pin 32 with the connecting pin 32 standing upright. Then, the split pin 41 is inserted and fixed in the split pin hole below the connecting pin 32, the flat washer 42 through which the connecting pin 32 is inserted from above and the spring 31 are inserted, and the connecting pin 32 is inserted from below into the connecting pin seat 40. Then, the spring 31 and the flat washer 42 are inserted from the tip of the connecting pin 32, and the split pin 41 is inserted and fixed in the upper split pin hole. The connecting pin 32 is loosely fitted to the connecting pin seat 40 so as to be able to move up and down with respect to the unevenness of the ground surface, and smoothly follows the unevenness of the ground surface of the grounding wheel 21, and receives an impact from the grounding wheel 21. Spring 3
The front surface of the elevating frame 20 is connected to the machine frame 19 so as to be vertically movable up and down. A connecting pin seat 4 is provided at a portion of the connecting pin 32 that contacts the connecting pin seat 40.
A large diameter portion having a diameter slightly larger than the inner diameter of the spring 31 is provided, and the connecting pin 32 is inserted into the connecting pin seat 40. And the lower end of the connecting pin 32 is attached to the connecting pin mounting base 38 of the elevating frame 20,
A gap is provided between the connection pin seat 40 and the spring 31,
When a vertical play is provided between the grounding wheel 21 and the machine frame 19,
The shock absorption is good.

FIG. 5 is a cross-sectional plan view showing a mounting state of the thatch collecting rotor, and FIG. 6 is a cross-sectional front view thereof.
The blades 23 made of an elastic material such as rubber are radially implanted and formed on the outer periphery of the blade coupling body 35 at regular intervals. Universal joints 25 are respectively attached to both ends of the rotating shaft 24 that passes through the center of the blade connector 35 of the thatch collecting rotor 22, and the two thatch collecting rotors 22 are provided between the left and right side walls 18 of the machine frame 19 and the lifting frame 20. Are arranged coaxially, and the two universal joints 25 that are in contact with the lifting frame 20 are connected and integrated to form a bent portion 33 that can be bent at the connection portion. Next, bearing bearings 26 are provided on the left and right side walls 18 of the machine frame 19 and the central portion of the elevating frame 20, respectively.
And a pair of integrally connected rotors 22
, The rotating shaft 24 is supported on the left and right side walls 18 via the universal joints 25 at both ends, and the bent portion 33 is supported on the lifting frame 20. Further, a drive motor 27 is attached to one of the right and left side walls 18, and the rotation shaft 24 of the thatch collection rotor 22 is connected to the drive motor 27 via a universal joint 25. In addition,
In this example, a drive motor is used, but the motor vehicle 1 may be rotated by a belt drive. Elevating frame 20
The bending portion 33 which is pivotally supported by the base member follows the vertical movement of the grounding wheel 21 and bends via the universal joint 25 as shown in FIG.
Rotate smoothly through.

FIG. 7 is a side view of a truck 3 in which a pair of such collecting rotors 22 connected by a universal joint 25 are provided in parallel in front and rear, and FIG. 8 is a plan view showing a connected state of the collecting rotor 22. FIG. The bogie 3 is provided with a machine frame 19 having an open bottom surface. The machine frame 19 is supported by a pair of supporting front wheels 14 provided in front of the bogie 3 and a pair of fixed rear wheels 15 provided behind. An elevating frame 20 extending in the front-rear direction is provided in the center of the machine frame 19, the front end of which is supported by a grounding wheel 21, and the rear end of which is turned around a support shaft provided parallel to the axle of the fixed rear wheel 15 at the rear of the machine frame 19. It is pivotally supported. A pair of thatch collecting rotors 22 connected via universal joints 25 between the right and left side walls 18 of the machine frame 19 and the lifting frame 20.
And a pair of thatch collecting rotors 22 is similarly mounted at a certain interval in front of the. At this time, as shown in FIG. 8, the two front and rear thatch collection rotors 22 are arranged so as to be alternately shifted left and right so that the blades 23 do not collide with each other, thereby forming a blade overlap portion 34. In this state, as in FIG. 6, the height of the front end of the lifting frame 20 is changed by the vertical movement of the grounding wheel 21, and the two front and rear thatch collecting rotors 22 are bent by the universal joint 25 at the bent portions 33 thereof. , The rotating shaft 24 of thatch collecting rotor 22 moves up and down. The drive motor 27 attached to the side wall 18 of the machine frame 19 is connected to the rotation shaft 24 of the rear thatch collecting rotor 22,
Spur gears 28 are respectively mounted on the rotating shafts 24 of the front and rear two rows of thatch collecting rotors 22 protruding outward from the opposite side wall 18, and the spur gears 28 are meshed with each other, so that a driving motor is attached to the front thatch collecting rotor 22. 27 power is transmitted.

Next, the operation will be described. As the self-propelled vehicle 1 travels, the front bogie 3 is pushed out by the arm 16 and the machine frame support rod 17, and travels on the ground surface by the support front wheel 14 and the fixed rear wheel 15. Thatch collecting rotor 22 adjusts the height of the supporting front wheel 14 of the bogie 3 in advance and holds it in a state close to the ground surface, and during traveling, scrapes the hatch without the tip of the blade 23 directly hitting the ground surface. Adjust so that it can be approached. On the other hand, the grounding wheel 21 attached to the tip of the elevating frame 20 comes into close contact with the ground surface by its own weight, and on a flat ground, the tip of the blade 23 is made to be substantially horizontal, so that it follows the unevenness of the ground surface. The frame 20 moves forward while changing the height at the front end. The bent portion 33 of the thatch collecting rotor 22 moves up and down according to the elevating frame 20, and connects the left and right thatch collecting rotor 22 to the bearing 2 on the left and right side walls 18.
With the universal joint 25 as a fulcrum, the universal motor 25 is held in an inclined state toward the inside, and the rotation of the drive motor 27 rotates the left and right thatch collection rotors 22 in parallel according to the inclination of the ground surface, and the blades of the thatch collection rotor 22 The hatch is picked up into the machine frame 19 by 23, and the collected hatch is sent to the cyclone 7 through the transfer duct 6 by the transfer fan device 2. When the grounding wheel 21 moves up and down due to irregularities on the ground surface, the tip of the lifting frame 20 moves up and down following the grounding wheel 21, and changes the inclination of the thatch collecting rotor 22 in accordance with the raising and lowering of the lifting frame 20, and the The rotor 22 is supported so as to be parallel to the ground surface. Drive motor 27
The hatch can be easily scooped up by the blade 23 by rotating the thatch collection rotor 22 directly connected to the rotor in the direction opposite to the running direction. As described above, the tip of the blade 23 is rotated close to the ground surface, not only on flat grass but also on undulating grass, by rotating the thatch collecting rotor 22 in a state of being inclined along the ground, and the Can be collected without leaving behind.

Further, as shown in FIG. 7 and FIG.
The two blades 23 are arranged close to each other so that both blades 23 are alternately positioned, and the rotation shaft 24 of the rear thatch collecting rotor 22 is connected to a drive motor 27, so that the two rotation shafts 2
4 is attached to the other end of each spur gear 28.
8 engages with the front thatch collection rotor 22. The rear thatch collecting rotor 22 is driven by the drive motor 27.
When the blade 23 of the blade overlap unit 34 rotates in the ascending direction, the front thatch collecting rotor 22 also rotates the two rotation shafts in opposite directions by meshing the spur gear 28 so that the blade 23 of the overlap unit 34 rotates in the ascending direction. To rotate. At this time, the slashes cut on the ground surface are raked forward by the satch collection rotor 22 at the rear and rearward by the satch collection rotor 22 at the front.
Can be lifted into the machine frame 19 without being left by the blade overlapping section 34, and thatch can be collected efficiently.

[0012]

As described above, according to the present invention, a bent portion is formed by interposing a universal joint between the rotating shafts of thatch collecting rotor, and both ends of the rotating shaft are formed on the side wall of the machine frame, and the bent portions are formed. By pivotally supporting the lifting frame supported by the grounding wheel, the lifting frame moves up and down following the grounding wheel that moves up and down due to the unevenness of the ground surface, and tilts the left and right thatch collection rotors along the unevenness of the grass surface, By the rotation of the Thatch collection rotor, the Thatch in the concave part can be collected without remaining. In addition, the thatch collecting rotors are arranged in front and rear two rows so that the blades are alternately arranged close to each other, and the front thatch collecting rotor is arranged by a spur gear so that the rear thatch collecting rotor is directed upward at the blade overlap portion by a drive motor. By rotating the rotor so that it faces upward, an upward flow of thatch is generated in the blade overlapping section, and thatchatch can be collected and taken into the machine frame with certainty. Reduction and cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view of a thatch collecting machine embodying the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a side view illustrating a configuration of a collecting device and a transport fan device of the thatch collecting machine embodying the present invention.

FIG. 4 is a side view showing a connection mechanism between a machine frame and a lifting frame of the thatch collecting machine embodying the present invention.

FIG. 5 is a cross-sectional plan view showing an attached state of a collecting rotor of the collecting device.

FIG. 6 is a sectional front view of the same.

FIG. 7 shows a front and rear of a collecting rotor embodying the present invention.
It is a side view of the collection device provided side by side.

FIG. 8 is a cross-sectional plan view showing a state of attachment of two thatch collecting rotors of the collecting device provided side by side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Self-propelled vehicle 2 Conveyor fan apparatus 3 Dolly 4 Connecting part 5 Mounting frame 6 Transport duct 7 Cyclone 8 Hopper 9 Discharge port 10 Thatch discharge shutter 11 Bag 12 Preliminary discharge port 13 Preliminary discharge duct 14 Support front wheel 15 Fixed rear wheel 16 Arm 17 Machine frame support rod 18 Side wall 19 Machine frame 20 Elevating frame 21 Ground wheel 22 Thatch collecting rotor 23 Blade 24 Rotary shaft 25 Universal joint 26 Bearing bearing 27 Drive motor 28 Spur gear 29 Collecting device 30 Ground wheel support 31 Spring 32 Connecting pin 33 Bending part 34 Blade overlapping part 35 Blade connection body 36 Support shaft 37 Connection mechanism 38 Connection pin mounting base 39 Support pin 40 Connection pin seat 41 Split pin 42 Washer 43 Mounting part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-242609 (JP, A) JP-A 6-19415 (JP, U) JP-B-58-44321 (JP, B2) JP-B 5-5- 18882 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) A01D 90/00-90/16 A01D 34/00-34/86

Claims (2)

(57) [Claims] 1. A thatch collecting vehicle for collecting a surface thatch by rotating a thatch collecting rotor laid on a front portion of a self-propelled vehicle, wherein a universal joint is interposed in the middle of a rotating shaft of the saidchatch collecting rotor. A bent portion is formed, and both left and right ends of the rotating shaft are supported on the machine frame via a universal joint. Further, the bent portion is supported on an elevating frame, and a rear portion of the elevating frame is rotatable about a support shaft of the machine frame. Concatenate,
Thatch collecting device with a free-wheeling grounding wheel attached to the front of the lifting frame. 2. Two such collecting rotors are provided in parallel in the front-rear direction, and blades extending radially from their rotation axes are alternately arranged on the left and right sides of a front collecting rotor and a rear collecting rotor. The bending portions of both rotating shafts are respectively connected to the lifting frame, and both right and left ends of both rotating shafts are respectively supported on the machine frame via universal joints. 2. The thatch collecting device according to claim 1, wherein the blades of the front part and the rear part of the collecting rotor are rotated in opposite directions so as to rotate in the ascending direction. apparatus.