JPS6218170Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grounding wheel support device for a mobile agricultural machine.

For example, in some seeding machines, a pressure ring is provided at the tip of an elastic rod, and the pressure ring is biased in the direction of contact with the ground by the elastic force of the elastic rod.
In this type of device, the elastic rod is inserted into the holder and fixed with a set bolt, etc., but since the elastic rod constantly repeats elastic deformation up and down due to the vertical movement of the suppression wheel that follows the undulations of the ground, it is simply When inserted into a cylindrical holder, stress concentrates at the end of the holder, causing problems such as bending at that part.

The present invention solves these conventional problems and is characterized by providing a pair of left and right cylindrical holders 28 on the support member 25, and each holder 28 is equipped with an elastic rod 30. A ground ring 19 is rotatably provided between the tips of the pair of elastic rods 30, and the midway portions of the left and right pair of elastic rods 30 are used to scrape off deposits attached to the outer peripheral surface of the ground ring 19. The elastic rods 30 of each holder 28 are connected by a scraper 35.
The extension side end is opened in the shape of a long hole in the vertical direction, and a regulating surface 29 is provided on the upper inner surface of each holding body 28 facing the upper surface of the elastic rod 30 so that the opening side is curved upward. The point is that

The present invention will be described in detail below with reference to the illustrated embodiment. In FIG. 1, 1 is a tractor and 2 is a rear wheel. Reference numeral 3 denotes a hydraulic system for lifting and lowering the working machine, which is mounted on the rear of the tractor 1. A rotary device 4 is attached to the rear of the tractor 1 via a three-point linkage mechanism 5, and is movable up and down by a hydraulic device 3. The rotary device 4 consists of a rotary machine frame 6, a rotary plowing section 7, a rotary cover 8, etc., and a gauge support frame 9 extends rearward from the top of the rotary machine frame 6.
is extended, and a pair of gauge wheels 10 are provided on both sides of the rear end of the gauge support frame 9. Gauge support frame 9
has a transverse horizontal rod portion 10 at its rear end, and a U-shaped mounting base 11 is provided at the center of this horizontal rod portion 10.
Numeral 12 is a fertilizing seeding machine, and a plurality of them are installed laterally behind the rotary device 4. The fertilizing seeding machine 12 is attached to the mounting frame 1 as shown in FIGS. 2 and 3.
3. Movable frame 14, fertilizer tank 15, seed tank 1
6, a fertilizer dispensing device 17, a seed dispensing device 18, a suppression wheel 19, etc. The mounting frame 13 includes a mounting bracket 20 that is removably fitted into the mounting base 11 of the gauge support frame 10 from the rear, and also has a horizontal tool bar 21 made of a square tube. Note that the mounting bracket 20 is fixed to the mounting base 11 by two mounting pins 22 that can be freely inserted and removed. As shown in FIG. 4, the tool bar 21 is provided with a mounting base 24 which can be changed in position laterally via a mounting bracket 23 and can be adjusted vertically. is fixedly installed, and the movable frame 14 is connected to the lower part via a parallel link 26. An inverted L-shaped support arm 27 is provided at both left and right ends of the support member 25 and has an overhang that bends upwards of the rotary device 4. Seed tanks 16 are installed in line with each other. The support member 25 is provided with a pair of left and right holders 28 in the front and rear direction near the inner side of each support arm 27 . The holding body 28 has a cylindrical shape, and as shown in FIG. 5, the upper and lower inner surfaces of the rear end side are gently curved so that the rear end has an elongated opening in the vertical direction and has a flat shape when viewed from the side. Regulation aspect 2
9 is provided, and this holding body 28 is provided with a suppressing ring 1.
An elastic rod 30 with a bolt 9 attached thereto is inserted from the rear and fixed with a set bolt 31. The mounting elastic rods 30 are formed by bending a round bar into a horizontal L-shape, and there are a pair of left and right rods, each of which has a horizontal rod portion 32 and a vertical rod portion 33. As shown in FIG. 6, the suppression ring 19 is rotatably supported via a horizontal shaft 34, and the horizontal shaft 34 is connected to the vertical rod portion 33 of the elastic rod 30 at both ends.
It can be installed vertically adjustable. In addition, the vertical rod part 33
A scraper 35 that comes into contact with the suppressing wheel 19 is also provided so as to be vertically adjustable. The parallel link 26 consists of an upper link 36 and a lower link 37, as shown in FIGS. It is pivoted to the frame 14. The parallel link 26 can be locked in the raised state by a modified U-shaped locking rod 44 having a shaft portion 42 and an engaging portion 43. That is, the shaft portion 42 of the locking rod 44 is inserted into the through hole 45 of the upper link 36 and is elastically held by the spring 46, and the engaging portion 43 is removably engaged with each link 36, 37. Engagement hole 4
7, 48 are formed. A fertilizer dispensing device 17 and a seed dispensing device 18 are provided in the front and rear of the movable frame 14, and a drive wheel 49 for driving these is provided so as to freely rotate on the ground via a drive shaft 50. Each feeding device 17, 18 is connected to an outlet at the bottom of each tank 15, 16 via a flexible tube 51, 52 of a bellows type or the like. Further, the movable frame 14 is provided with a pair of groove forming means 55 on the left and right below the fertilizer dispensing device 17, consisting of a rotary disk 53 and a groove forming plate 54, which are freely rotatable around the inclined axis. A groove forming means 58 consisting of a groove plate 57 is provided below the seed feeding device 18 in the middle of the groove forming means 55. The fertilizer fed out from the fertilizer feeding device 17 passes through a distribution chute between each rotary disk 53 and the groove cutting plate 54, and the seeds fed out from the seed feeding device 18 pass through a sowing chute that opens and closes intermittently in synchronization with the traveling speed. 59 and are respectively supplied between the rotary disk 56 and the groove plate 57.

In the above configuration, if the rotary device 4 and the fertilizing/seeding machine 12 are grounded and towed by the tractor 1 as shown in FIG. 1, the tilling work, fertilizing work, and seeding work of the field can be performed in a connected manner at the same time. be able to. In this case, the rotary device 4 is driven by the power from the tractor 1, but in the fertilizing and seeding machine 12, a drive wheel 49 that is grounded on the field and rotates.
Get more power. That is, the drive wheel 49 rotates while moving up and down along the undulations of the ground, and the fertilizer dispensing device 1
7, the seed feeding device 18, etc. When fertilizer and seeds are put into the fertilizer tank 15 and the seed tank 16, the flexible tubes 51 and 52 are filled with fertilizer and seeds, and the fertilizer and seeds are fed out sequentially from the respective feeding devices 17 and 18, but in this case, the movable frame 14 Since the flexible tubes 51 and 52 repeatedly move up and down following the undulations of the ground, the flexible tubes 51 and 52 vibrate accordingly, thereby preventing fertilizer and seeds from clogging inside. The fertilizer delivered from the fertilizer delivery device 17 is supplied to the grooves made by the pair of left and right groove making means 55. The grooves after fertilization are covered with soil when the grooves are made by the rear groove-making means 58, and the seeds fed from the seed feeding device 18 are successively sown in a dot-like manner in the grooves made by the groove-making means 58. Finally, the soil is covered and compacted using a compaction wheel 19. Therefore,
In this case, fertilizer can be applied on both sides of the sowing location.

When turning at the edge of the field, the hydraulic device 3 lifts the rotary device 4 and the fertilizer seeding machine 12.

The elastic rod 30 of the pressing ring 19 elastically curves upward when pressing down during work and downward when lifted, but a curved regulating surface 29 is formed on the holding body 28 into which the elastic rod 30 is inserted. are provided above and below, stress is not concentrated on the elastic rod 30 at the end position of the holder 28, and therefore the elastic rod 30 can freely deform elastically with sufficient margin.
Bending of the elastic rod 30 can be prevented.

If, for example, only one row of a plurality of fertilizing and seeding machines 12 is to be stopped, the parallel link 26 is locked in the raised position by the locking rod 44, and the drive wheel 49 is made unable to touch the ground. In this case, the lock rod 44, the spring 46
After removing the engaging portion 43 from the engaging hole 47 of the upper link 36 by pulling against the It can be fixed as shown in the imaginary line in Figure 4.

In the embodiment, the pressure wheel 19 is used as an example of the ground contact wheel, but it goes without saying that other wheels may be used, and that the present invention can also be implemented in various mobile agricultural machines other than the fertilizing and seeding machine 12.

According to the present invention, since the holding body is provided with a regulating surface that is curved upward, even when the grounding ring rises, stress will not be concentrated on the elastic rod at the end position of the holding body. This prevents bending of the elastic rod. In addition, the holder is cylindrical and has an elongated hole opening in the vertical direction on the side where the elastic rod extends, so that the base side of the elastic rod can be easily deformed in the vertical direction, and sideways vibration can be ensured. It is easy to manufacture because it can be controlled by a pipe material and can be made of pipe material. In addition, the grounding ring is supported by a pair of left and right elastic rods, and the middle part of the pair of elastic rods is connected with a scraper to scrape off deposits that have adhered to the outer circumferential surface of the grounding ring. A simple structure prevents the spread of the rod and lateral vibration, and the grounding wheel can be supported stably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a plan view, Fig. 3 is an enlarged side view of the fertilization and seeding section, and Fig. 4 is an enlarged sectional view of the mounting section. 5 is a view taken along the line A--A in FIG. 4, FIG. 6 is a cross-sectional view of the suppression ring, and FIG. 7 is a cross-sectional view of the parallel link when it is locked. 1...Tractor, 4...Rotary device, 12...
... Fertilizer seeding machine, 14 ... Movable frame, 15 ... Fertilizer tank, 16 ... Seed tank, 19 ... Suppressing wheel, 2
8... Holding body, 29... Regulating surface, 30... Elastic rod.

Claims (1)

[Scope of utility model registration request] A pair of left and right cylindrical holding bodies 28 are provided on the support member 25, elastic rods 30 are inserted into each of the holding bodies 28, and a grounding ring 1 is inserted between the tips of the pair of elastic rods 30.
9 is provided rotatably, and the middle portions of the pair of left and right elastic rods 30 are connected by a scraper 35 that scrapes off deposits attached to the outer peripheral surface of the ground ring 19, and the extending side ends of the elastic rods 30 of each holder 28 are connected. The holding body 28 is characterized by being opened in the shape of a long hole in the vertical direction, and on the inner surface of the upper part of each holding body 28 facing the upper surface of the elastic rod 30, a regulating surface 29 is provided which is curved so that the opening side is curved upward. A grounding wheel support device for mobile agricultural machinery.