JPH0134563B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a transmission device for a rice transplanter, and more particularly to a transmission device for transmitting mission driving force in a main gear box to a planting section.

[Conventional technology]

FIG. 1 shows an example of a transmission system for a conventional rice transplanter. The power of a transmission 3 in a main gear box 2 connected to an engine 1 is transmitted through a chain 5 and a clutch 6 in a transmission frame 4. The power is transmitted to the planting rod drive shaft 8 in the attachment frame 7, and further transmitted to the planting rods 12, 13 by chains 9, 11. A lead cam shaft 16 pivotally supported by the planting section frame 7 is connected to a planting rod drive shaft 8 through gears 17 and 18.
A lead metal 19 screwed into the lead metal 6 is reciprocated in the lateral direction. Lead metal 19 is connected to the seedling tank via shaft 20.

[Problems to be solved by the invention]

In this conventional transmission device, the planted rod 12,
13, a built-in rod drive shaft 6, a gear 1
7, 18 etc. was required, resulting in a large and heavy planting section. The vertical seedling feeding device that feeds the seedlings in the seedling tank was rotated by a separate drive system, so the mechanism was complicated.

[Means to solve the problem]

An object of the present invention is to provide a transmission device for a rice transplanter that is capable of carrying out the functions of a planting rod and a vertical seedling feeding device in addition to feeding a seedling tank by the rotational force of a lead cam shaft. .

【Example】

Hereinafter, the configuration of the present invention will be explained with reference to an illustrated embodiment. In FIGS. 2 and 3, the main gear box 2 and the planting frame 21 are connected by a pair of left and right transmission cases 22 and 23, and a lead metal 24 is screwed into the planting frame 21. Each end of the lead cam shaft 25 is pivotally mounted,
A coaxially fixed chain wheel 26 is connected to a transmission in the main gearbox 2 by a chain 27. A shaft 28 to which the free end of the lead metal 24 is fixed is slidably mounted on the planting frame 21, and each end thereof is fixed to the arms 31 and 32 of the seedling tank 29, respectively. The bases of side frames 33, 34 are fixed to each side of the planting frame 21, and a pair of planting rods 37, 38 are installed respectively,
Chain wheels 41, 42 fixed to the shafts 35, 36 are connected by chains 43, 44 to chain wheels 45, 46 fixed to the outer end of the lead cam shaft 25. The seedling vertical feeding device provided on the back side of the seedling tank 29 includes a seedling feeding roller arm 4 attached to a seedling feeding shaft 45 rotatably attached to the seedling tank 29.
6 and a plurality of ratchet wheels 47 are attached, a part of the peripheral surface of the ratchet wheel 47 protrudes toward the surface side of the seedling tank 29, and rotates when the seedling tank 29 reaches the end of its reciprocating motion. This acts to send the seedling pine toward the planting rods 37 and 38. One end of a seedling feeding rod 49 is pivotally connected to the free end of a seedling feeding rotary arm 48 whose base is fixed to one end of the lead cam shaft 25, and the other end is used to feed seedlings arranged on the back side of the seedling tank. It is pivotally attached to the free end of the feed rotation arm 51. A seedling feeding rotating arm 51 is fixed to one end, and a base of a seedling feeding arm 53 is fixed to the other end of a shaft 52 which is pivotally connected to the seedling tank 29. In the device configured in this way, the chain 2
When the lead cam shaft 25 is rotated through the lead metal 24 and the seedling tank 29 that is substantially integral therewith, the lead metal 24 and the seedling tank 29 that are substantially integral therewith are moved laterally. At the same time,
The planting rods 37 and 38 are operated via the chains 43 and 44 to perform the planting work of seedlings. Seedling tank 29
However, at the end of one of the reciprocating motions, which is the lowest position in FIG. 45 and the ratchet wheel 47 attached thereto. Claw wheel 47
By this rotation, the seedlings on the seedling tank 29 are sent downward (to the left in the figure). A similar mechanism is also provided on the opposite side (upper side in the figure) of the seedling tank 29, and when the seedling tank 29 reaches the end of the reciprocating movement on the opposite side, the ratchet wheel 47 is rotated. In this way, the side frames 33 and 34 and the planting rods 37 and 38 are respectively arranged on the sides of the planting frame 21, and the planting rods 37 and 38 are rotated by the driving force from the lead cam shaft 25. By doing so, the conventionally used planting rod drive shaft 8 (see Fig. 1), gears 17, 18, etc. are omitted, the planting frame 21 becomes smaller, and the weight of the planting part is reduced. Reduced. In FIGS. 4 and 5, the input portion of the driving force to the lead camshaft 25 via the chain 27 includes:
A fixed position stop clutch mechanism 55 is provided,
The clutch mechanism 55 includes a driving member 56 to which a chain 27 is attached, a driven member 57, a clutch pin 63, and the like. Drive member 56
is pivotally attached to the small diameter portion 25b of the lead cam shaft 25, the driven member 57 is prevented from rotating by a key 59, and is slidably attached to the guide portion 25a. Due to the elasticity of the spring 61, the driven member 57 has a tendency to slide in the direction of the arrow 60. Due to this behavior of the driven member 57, both members 56,5
Clutch pawls 62 formed on the sides of 7 are in an engaged state. The clutch pin 63 is the planting frame 2
1, and a clutch wire 65 held by a support plate 64 at its outer end.
An elastic spring 6 is disposed between the clutch pin 63 and the support plate 64.
6, the tip of the pin 63 is pushed into the driving member 5.
6. The clutch pawl 62 is normally released by entering between the driven members 57. The other end of the clutch wire 65 is fixed to a handle 67 and connected to a clutch lever 69 of an operation box 68, as shown in FIG. When the fixed position stop clutch mechanism 55 configured as described above is in a released state, only the drive member 56 rotates idly, and the rotation of the lead cam shaft 25, that is, the lateral movement of the seedling tank 29 and the planting rod 37, 3
8 is not operated. When the clutch lever 69 is operated to move the clutch pin 63 outward, the clutch pawl 62 is engaged, and the rotation of the drive member 56 is transmitted to the lead cam shaft 25 to operate the planting section. be able to. Conventional planting clutches were installed on the input shaft within the planting frame 21, but in this device, the clutch mechanism is provided at the input part of the lead cam shaft, eliminating the need for an input clutch shaft. The attached frame 21 can be configured to be small and lightweight.

【Effect of the invention】

As described above, according to the present invention, the side frames and the transmission system are arranged on both sides of the planting frame, and the planting rods arranged at the ends of the side frames are actuated by the rotation of the lead cam shaft. The lead cam shaft can be used to drive the planting rod in addition to its original function of horizontally feeding the seedling tank. As a result, the planting rod drive shaft and gears of conventional devices are omitted from the planting section, making the planting frame smaller and lighter, and the front part of the rice transplanter balanced with this lighter. This reduces the weight of the entire rice transplanter. Furthermore, by disposing the fixed position stop clutch on the lead cam shaft, it is possible to simply configure a planting section in which the conventional planting clutch shaft is omitted.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an example of a transmission device of a conventional rice transplanter, Fig. 2 is a side view showing an example of a rice transplanter to which the present invention is applied, and Fig. 3 is a rice transplanter showing an embodiment of the present invention. FIG. 4 is a plan view of the main part of the transmission device showing another embodiment of the present invention, and FIG. 5 is an enlarged view of the main part of the same. 1...Engine, 2...Main gearbox,
3...Mission, 4...Transmission case, 5,9,
11... Chain, 6... Clutch, 7... Planting section frame, 8... Planting rod drive shaft, 12, 13...
Implanted rod, 16... Lead cam shaft, 17, 18...
Gear, 19...Lead metal, 20...Shaft, 21
...Planting frame, 22, 23...Transmission case,
24...Lead metal, 25...Lead cam shaft,
26...Chain wheel, 27...Chain, 28...Shaft, 2
9... Seedling tank, 31, 32... Arm, 33, 3
4... Side frame, 35, 36... Axis, 3
7, 38... implanted rod, 41, 42, 45, 46...
... Chain wheel, 43, 44... Chain, 45... Seedling feeding shaft, 46... Seedling feeding roller arm, 47...
...Rawl wheel, 48, 51...Seedling feeding rotating arm, 49
...Seedling feed rod, 52...Axis, 53...Seedling feed arm, 55...Fixed position stop clutch mechanism, 56
... Drive member, 57 ... Driven member, 59 ... Key, 61 ... Spring, 62 ... Clutch pawl, 63 ...
...Clutch pin, 64...Support plate, 65...Clutch wire, 66...Spring, 67...Handle,
68...Operation box, 69...Clutch lever.

Claims (1)

[Scope of Claims] 1. A lead cam shaft 16 whose both shaft ends are pivotally connected to the planting frame 21 and which are appropriately driven from the transmission side of the main gear box 2 to reciprocate the seedling tank 29 in the lateral direction. , attached to side frames 33 and 34 fixed to each side of the planting frame 21, and attached to a plurality of planting rods 37 and 38 driven by the lead cam shaft, and to the back side of the seedling tank 29. A transmission device for a rice transplanter comprising means for driving, by the lead cam shaft 16, an interlocking mechanism that operates a seedling transfer device that vertically feeds the seedlings when the seedling tank 29 is at the end of its reciprocating motion. 2. A lead cam shaft 16 whose both shaft ends are pivotally connected to the planting frame 21 and is appropriately driven from the mission side of the main gear box 2 to reciprocate the seedling tank 29 laterally; A plurality of planting rods 37, 38 are attached to side frames 33, 34 fixedly installed on each side and driven by the lead cam shaft, and a seedling tank is attached to the back side of the seedling tank 29. 29 is located at the end of the reciprocating motion, the lead cam shaft 16 is used to drive an interlocking mechanism that operates a seedling transfer device that vertically feeds the seedlings, and a fixed position stop clutch mechanism is disposed on the lead cam shaft 16. A transmission device for a rice transplanter comprising means for "breaking" and "continued" rotation of a lead cam shaft 16 by external operation.