JP2551307Y2 - Vertical feed mechanism for seedlings of mobile agricultural machines - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a vertical type for intermittently transferring mat seedlings placed on a seedling mounting table provided behind a mobile agricultural machine such as a walking rice transplanter to a scraping section. Related to the feed mechanism.

[0002]

2. Description of the Related Art A walking type rice transplanter, which is one of ordinary mobile agricultural machines, has a body frame arranged in the front-rear direction, and a power section including an engine and a transmission is provided at the front of the body frame. Wheels are disposed below both sides of the power plant, a seedling stand is disposed at an angle behind the power unit, a handle portion is disposed at the rearmost rear part of the seedling stand, and further below the body frame. The float is supported so as to be able to move up and down, and the rotation of the engine is changed through a transmission, and the wheels supported by a transmission case that is supported swingably up and down on the front side of the body frame are rotated. The planting operation is performed while supplying seedlings to the planting claws operating below the seedling mounting table while moving forward.

[0003]

Means for intermittently driving the vertical feeding device provided on the seedling mounting table is to move the movement of the vertical feeding driving section provided on the power section in front of the body frame via the connecting rod. The vertical feed lever provided below is pivoted, and the cam of the vertical feed device is kicked up by the vertical feed lever. The apron is moved up and down by a scraping amount adjusting lever to adjust the scraping amount of the seedlings. It is necessary to adjust the swing range of the vertical feed lever together with the rotation of the scraping amount adjusting lever. For this purpose, the position of the connecting rod engaged with the vertical groove of the vertical feed lever, It is necessary to change the ratio at the same time.

As described above, in order to allow the lever ratio to be changed and accurately engage the end of the connecting rod with the longitudinal groove of the longitudinal feed lever, a U provided on the side surface of the scraping amount adjusting lever is provided.
It is conceivable that the upper and lower surfaces of the connecting rod are supported by the U-shaped guide member. However, when the upper and lower surfaces of the connecting rod are supported by the U-shaped guide member, the scraping amount adjusting lever is greatly inclined. Sometimes the connecting rod is pinched more strongly than vertically and the frictional force increases, causing a problem in the operation of the connecting rod, and the longitudinal feed cannot be performed. Therefore, if the bending of the U-shaped guide member is increased and the distance between the upper and lower guide surfaces is increased, the regulation of the connecting rod becomes insufficient, and as a result, the vertical feed amount of the seedlings becomes inaccurate and the number of seedlings varies. Will occur.

The present invention is intended to improve the problem that the longitudinal feed amount of a seedling is likely to be inaccurate due to a failure of a conventional means for guiding a connecting rod for driving a vertical feed lever. It is an object of the present invention to provide a vertical feeding mechanism of a seedling of a mobile agricultural machine capable of performing the following.

[0006]

According to the present invention, there is provided a mobile agricultural machine having a longitudinal feed mechanism for seedlings, wherein the wheels are supported on both sides of a front portion of the body frame via wheel transmission cases. A seedling table is provided at the rear, a planting device is provided below the seedling table, and the movement of the vertical feed drive unit is transmitted to the vertical feed lever via a connecting rod. In a device for intermittently driving a vertical feeding device provided on a mounting table, an end of a connecting rod is engaged with a vertical groove of a vertical feeding lever for driving the vertical feeding device, and is disposed at a lower end of a seedling mounting table. The connecting rod is supported from below by a regulating member that moves together with a scraping amount adjusting lever that moves the apron up and down.

[0007]

[Operation] The connecting rod is supported from below by a restricting member that moves together with a scraping amount adjusting lever that moves the apron up and down. The connecting rod is placed on the restricting member by its own weight and reciprocated by a vertical feed operation. Due to the movement, even if the scraping amount adjusting lever is greatly inclined, the connecting rod is accurately guided since there is no member for pressing the connecting rod from above, and the connecting positional relationship between the connecting rod and the vertical feed lever That is, the lever ratio becomes accurate, and as a result,
The amount of scraped seedlings can be adjusted accurately.

[0008]

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. The walking type rice transplanter 1 has a body frame 3 supported by wheels 2 as shown in FIG. 1, and a float 4 is provided below the body frame 3 along the front-rear direction.
Are arranged. A power section including an engine 5 and a transmission case 6 is provided in front of the body frame 3, and a seedling mounting table 7 on which seedlings are placed is provided horizontally behind the body frame 3 in the machine width direction. It is movably supported, and a planting claw 8 is provided in front of the seedling mounting table 7.

Behind the body frame 3 and behind the seedling mounting table 7, a handle portion 9 extends in a direction inclined in parallel with the seedling mounting table 7. The handle 9 includes a post 9a and a handle 9b. A side clutch lever 10 is provided at an end of the handle 9b, and an operation panel 11 is provided at a lower central portion of the handle 9b. ing. A work clutch lever 11a for planting work is provided on the right side of the operation panel 11, and a main clutch lever 11b for traveling is provided on the left side. An apron 7a is provided below the seedling mounting table 7, and a guide plate 12 is provided below the rear surface. The guide plate 12 has a planting depth adjusting lever 13 for adjusting the distance between the body frame 3 and the float 4, and an apron 7a.
A scraping amount adjusting lever 14 is provided to move the planting nail 8 up and down to adjust the scraping amount of the seedling.

Further, a vertical feed lever 15 for intermittently transferring the seedlings in the vertical direction is disposed on the side of the operation panel 12, and the vertical feed lever 15 is connected to the transmission case 6 by a connecting rod 16. The vertical feed drive unit 17 is protruded from one side, and the vertical feed drive unit 17 is intermittently driven to rotate the vertical feed lever 15 intermittently in the upright direction, so that the vertical feed drive unit 17 is interposed on the rear surface of the seedling mounting table 7. Vertical feeder 1 provided
8, the seedling is transferred to the apron 7a by a predetermined amount.

Reference numeral 20 denotes a bumper weight, reference numeral 21 denotes a fuel tank, reference numeral 22 denotes a shift lever, reference numeral 23 denotes a hydraulic operating device for moving the wheels 2 up and down, reference numeral 24 denotes a swing arm, and reference numeral 25 denotes one end fixed to the swing arm 24. A wheel transmission case provided with an axle supporting the wheels 2 at the other end, and the mechanism for transmitting these wheels is the same as that used in a conventional device.

FIG. 2 is a perspective view of the operation system linking mechanism.
The rear part of the apron support frame 7b (FIG. 1) that supports the apron 7a is illustrated. An apron front and rear plate 7c is fixed to the back surface of the apron 7a, and an engaging portion 7f formed on the apron front and rear plate 7c is engaged with a crank rod 7e having both ends supported by a bracket 7d fixed to the apron support frame 7b. Have been. Further, a scraping amount adjusting lever 14 is fixed to the crank rod 7e. When the lever 14 is rotated in the direction of arrow U, the apron 7a descends with respect to the lower end of the seedling mounting table 7 and the planting claw 8 scrapes. Seedling volume increases. If a lever operation opposite to this is performed, the scraping amount will be reduced.

A vertical feed lever 15 is provided on the side of the guide plate 12.
And a U-shaped bracket 16 provided at the other end of the connecting rod 16 having one end connected to the vertical feed driving unit 17.
The pin 16b (connecting member) provided on the vertical feed lever 15 is inserted into the vertical groove 16c provided on the vertical feed lever 15, and is engaged with the uneven portion 16d provided on the front of the vertical groove 16c to be positioned. ing.

The crank rod 7e is provided with a regulating rod 7g (regulating member), which supports the connecting rod 16 only from below. Therefore, the pin 16b
The position of the (connecting member) in the vertical groove 16c is determined by the regulating rod 7g. When the connecting rod 16 is pulled by the vertical feed drive unit 17 provided on the power unit provided in front of the body, the vertical feed lever 15 interlocking with the connection rod 16 stands up in the direction of arrow S, and the projection 15a provided on the side surface thereof. Lifts the vertical feed cam 18a for driving the vertical feed device 18 to transfer the seedlings placed on the seedling mounting table 7 downward by a predetermined amount. Note that this seedling feeding operation is performed by the seedling mounting table 7.
Is performed only when is moved to the outermost part.

A guide plate 12 is provided at a lower portion of the handle portion 9, and a first fulcrum shaft 28 is supported at a front portion thereof in a lateral direction, and a vertical feed lever 15 is provided at an end of the first fulcrum shaft 28. Is provided. The first fulcrum shaft 28 is originally provided for the vertical feed lever 15, but in this embodiment, the relay cams 29 and 30 are provided thereon. A connecting rod 11c having one end connected to a working machine clutch lever 11a (planting clutch lever) provided on the operation panel 11 is connected to the cam 30 and one end is connected to the main clutch lever 11b (running clutch). The connecting rods 11d are connected to the relay cam 29, respectively. These relay cams 29 and 30 are connected to each operated member by connecting rods with the relay cams as relay points.

As shown in FIG. 1, an opening 12a is provided at the center of the guide plate 12, and the connecting rod 11c, which is connected to each of the levers 11a and 11b on the operation panel 11, is formed in the opening 12a. The lower part of 11d is gathered and passed, and this opening 12a forms a kind of guide member. FIG. 3 shows an operating system connecting mechanism in which the operating member and the operated member are connected by a connecting rod, and a connecting rod 11c connected to a work clutch lever 11a provided on the operation panel 11 is a first fulcrum. The connecting rod 11e is connected to a connecting rod 11e via a relay cam 30 which is a relay point supported on the shaft 28. The connecting rod 11e is connected to the second supporting shaft 31 and the connecting rod 11f to be an actuated member. The attached clutch 32 is operated. The main clutch lever 11b is connected to the main clutch 3 via a connecting rod 11d, a relay cam 29 supported on a first fulcrum shaft 28, and a connecting rod 11g.
3 is connected. As can be understood from this figure, the body frame 3 and the post portion 9a of the handle portion 9 are staggeredly connected due to the structure of the body frame, but the connecting rods 11e and 11g are bent in accordance with the body frame 3. C is formed and arranged along the side, and is arranged so as not to protrude in the lateral direction of the mobile agricultural machine as much as possible. The Bowden wire 35 is connected to side clutch levers 10 provided on both sides of the handle 9b.
Are connected to swing members A and B provided on the body frame 3 through the inside of the handle portion 9, and when the side clutch lever 10 is gripped, the swing members A and B swing and the rods 11h and 11g is pulled rearward to operate the side clutches 34 in the transmission case 6, respectively.

In particular, in the embodiment of the present invention, as shown in FIG. 2, a regulating rod 7e (regulating member) is fixed to a crank rod 7e fixed to a seedling scraping amount adjusting lever 14. The connecting rod 16 for vertical feed is supported only from below by the regulating rod 7e.
e can be directly fixed to the side of the scraping amount adjusting lever 14. In any case, the regulating rod 7e raises and lowers the engaging portion (pin 16b) of the connecting rod 16 with respect to the vertical groove 16c in response to the rotation of the scraping amount adjusting lever 14, and the first fulcrum shaft 28 What is necessary is just to adjust the "lever ratio" which is the distance from the pin 16b. Also, the vertical groove 16
The concave and convex portion 16d formed on the engaging surface of c is preferably formed as a kind of rack adapted to the shape of the pin 16b.

Since the connecting rod 16 reciprocated by the vertical feed drive unit 17 is supported only on the lower side by the regulating rod 7g (regulating member), the regulating rod 7g is turned by the turning operation of the scraping amount adjusting lever 14. The connecting rod 16 has no member for preventing the upward movement of the connecting rod 16 even if the angle of the connecting rod 16 changes. The position of the pin 16c can be accurately maintained.

[0019]

[Effect of the Invention] The vertical feed mechanism for seedlings of the mobile agricultural machine according to the present invention supports wheels on both sides of the front part of the body frame via wheel transmission cases, and provides a seedling mounting table behind the seedlings. A planting device is provided below the table, the movement of the vertical feed drive unit is transmitted to the vertical feed lever via the connecting rod, and the vertical feed device provided on the seedling mounting table is intermittently driven by the swinging motion of this vertical feed lever. In the apparatus, the end of the connecting rod is engaged with the vertical groove of the vertical feed lever that drives the vertical feed device, and together with the scraping amount adjusting lever that moves the apron disposed at the lower end of the seedling mounting table up and down. The connecting rod is supported from below by the regulating member that moves, and the following effects can be obtained.

A) The connecting rod 16 for driving the vertical feed lever 15 is accurately guided by the regulating member, and as a result, there is no play. As a result, the vertical feed stroke and the vertical feed amount of the seedlings become accurate. No variation occurs. B) Since no member is provided near the longitudinal feed lever 15 for restricting the rear end of the connecting rod 16 from moving upward in the vicinity of the conventional device, unnecessary frictional force is generated on the connecting rod 16. Without any inaccurate movements.

(C) The structure of the vertical feed mechanism is extremely simplified, and no failure occurs. D) The interlocking mechanism for adjusting the scraping amount of the seedlings is simplified, so that the adjustment of the device is easy, and the adjustment of the scraping amount of the seedlings is also easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of a walking rice transplanter according to an embodiment of the present invention.

FIG. 2 is a perspective view of a relay point portion of the connecting rod.

FIG. 3 is a plan view showing a main part of the walking rice transplanter of FIG. 1;

FIG. 4 is a side view of FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Walking type rice transplanter 3 Body frame 4 Float 5 Engine 7 Seedling stand 7a Apron 7b Apron support plate 7e Crank rod 7g Restriction rod (restriction member) 9 Handle part 10 Side clutch lever 11 Operation panel 11a Work machine clutch lever 11b Main clutch Lever 11c-11h Connecting rod 12 Guide plate 1
2a Opening 13 Planting depth adjustment lever 14 Scraping amount adjustment lever 15 Vertical feed lever 16 Connecting rod 16a
Bracket 16b Pin 16c Vertical groove 16d Uneven portion (rack portion) 17 Vertical feed drive unit 18 Vertical feed device 18a
Vertical feed cam 28 First fulcrum shaft 29, 30 Relay cam 31
Second fulcrum shaft 32 Planting clutch 33 Main clutch 34
Side Kutch.

Claims (1)

(57) [Scope of request for utility model registration] 1. A wheel support is provided on both sides of a front part of a body frame via a wheel transmission case, a seedling mounting is provided at a rear side, a planting device is provided below the seedling mounting, and a vertical feed drive unit is provided. The movement is transmitted to the vertical feed lever via the connecting rod, and the swinging movement of the vertical feed lever intermittently drives the vertical feed device provided on the seedling mounting table. The connecting rod is supported from below by a regulating member which engages with a vertical groove of a vertical feed lever for driving the device and moves together with a scraping amount adjusting lever which moves an apron arranged at a lower end of the seedling mounting table up and down. Vertical feeding mechanism for seedlings of mobile agricultural machines.