JP2511654Y2 - Transmission shaft mounting device for speed change interlocking device - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application The present invention relates to a transmission shaft mounting device in a speed change interlocking device, and is particularly suitable for use in a interlocking device between a pump and a speed changer in a side row fertilizer transplanter. is there.

(B) Conventional technology Conventionally, fertilizer application machines, such as side-row fertilizer rice transplanters, have an engine mounted on the front part of a machine body supported by front wheels and rear wheels, as disclosed in, for example, Japanese Patent Laid-Open No. 61-249308. At the same time, a driver's seat is arranged at the rear part of the machine body, and further, a planting portion is supported rearwardly of the machine body so as to be vertically movable.

Then, fertilizer tanks are arranged on the left and right of the engine in the front part of the machine body, fertilization nozzles are arranged beside each planting claw in the planting part, and a fertilization pump is arranged in the middle part on the side of the machine body, and A transmission for a pump is arranged inside the machine body at substantially the same position as the pump in the machine front-rear direction via a chain extending in the machine center direction in front of the pump.

(C) Problems to be solved by the invention By the way, as described above, when the fertilizer application pump and the transmission for the pump are located at substantially the same position in the machine longitudinal direction, the fertilizer application pump is arranged below the driver's seat and toward the rear of the machine body. Therefore, the distance from the fertilizer pump at the front of the machine becomes longer. For this reason, the suction hose that connects the fertilizer tank and the fertilizer pump becomes long, the fertilizer in the tank does not flow smoothly to the fertilizer pump, and crystals of fertilizer may settle in the hose. Cleaning the inside is also a hassle.

Therefore, the applicant of the present invention has devised a gear shift interlocking device in which the fertilizer pump and the pump gear shift device are separated from each other and disposed in the machine body, thereby facilitating handling such as gear shift operation.

In such a speed change interlocking device, the fertilizer pump and the pump transmission are arranged in the front-rear direction and are separated from each other by an appropriate distance. Therefore, the transmission extending in the front-rear direction in which the fertilizer pump and the pump transmission are interlocked with each other. The shaft is located in between these. In order to arrange the transmission shaft between the devices, a large space is required in the axial direction because the transmission shaft is inserted between the devices in the axial direction.

Therefore, an object of the present invention is to provide a transmission shaft mounting device in a speed change interlocking device in which a transmission shaft interlocking with the fertilizer pump and the pump speed change device can be easily assembled.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances. For example, referring to FIGS. 1 to 4, the operating device (22) and the transmission (23) are shown. ) And a transmission shaft (53) for interlocking the operating device (22) and the transmission (23) with each other, the operating device (22) and the transmission (23) being attached to either one of the operating device (22) and the transmission (23). A bearing (90) supports the transmission shaft (53), and a first notch (82) extending in a predetermined direction in a case body (81) on the other side of the actuating device (22) and the transmission (23). And a cover body (56) fixed to the case body is formed with a second notch (83) extending in the lateral direction with respect to the first notch (82), and the transmission shaft ( 53) is guided through the first notch (82), and the transmission shaft (53) is provided with the second notch (8). 3) is guided to fix the cover body (56) to the case body (81).

(E) Action Based on the above configuration, the transmission shaft mounting device is provided, for example, in the case body (81) of the transmission (23).
Through the first notch (82) formed in the transmission shaft (53)
Are supported via bearings (86) and the like. Then, the cover body (56) is fixed to the case body (81) by guiding the second notch (83) formed in the cover body (56) to the transmission shaft (53).

(F) Effect of the Invention As described above, according to the present invention, the case body (8
The transmission shaft (53) is guided by the first notch (82) of (1) so that the transmission shaft (53) is supported by the case body (81) and the second cut of the cover body (56). The transmission shaft (53) is guided to the notch (83), and the cover body (56) is attached to the case body (81).
Is fixed, the transmission shaft (53) is attached to the actuating device (22) and the transmission (23) when the transmission shaft (53) is assembled.
Even if it is not inserted in the axial direction, the first notch (82) can be inserted and mounted, and a large space is not required.

Further, since the notches (82), (83) orthogonal to each other guide the transmission shaft (53), the position of the transmission shaft (53) is almost determined, so that the transmission shaft (53) is located at that position. It is easy to dispose, and it is possible to reduce the number of assembling steps, and it is possible to reliably prevent the position of the transmission shaft (53) from shifting or falling off.

It should be noted that the reference numerals in parentheses above are for the purpose of facilitating understanding, and are in contrast to the drawings, but do not limit the configuration in any way.

(G) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 7 and 8, the lateral row fertilizer rice transplanter 1 has a traveling machine body 5 supported by front wheels 2 and rear wheels 3, and a front portion of the traveling machine body 5 is An engine 6 is mounted, and an operating seat 7 is arranged at the rear of the machine body 5. Further, a mission case 9 is disposed below the engine 6, and main frames 10a and 10b made of two square pipes extend in parallel rearward from the case 9 (see FIG. 6 for details). ). The rear portion of the main frame 10 is bent upward in an R shape,
The sheet 7 is fixed to the tip portion thereof. Further, a planting part 12 is supported at the rear of the machine body 5 via a link device 11 so as to be able to move up and down, and the planting part 12 is provided with a large number (four in this embodiment) of rotary type planting claws 13 and floats. It has 15 and seedling stand 16.

On the other hand, as shown in detail in FIG. 6, fertilizer tanks 17, 17 are arranged on both left and right front portions of the machine body 5 in which the engine 6 and the mission case 9 are arranged. As shown in FIG. 7, the fertilizer tank 17 has a lower portion 17a formed like a fender that covers the front wheel 2 and an upper surface 17 thereof.
The b is formed so as to be a step support surface on which the operator puts his / her foot and walks, and is designed so as to configure the traveling machine body 5. Furthermore, left and right fertilizer tank 1
7 and 17 are connected to each other by communication hoses 19 and 20 in two stages at the front. The upper-stage communication hose 19 communicates with the fertilizer supply port 21 at its central portion, and the supply port 21 can be switched between a projecting position (a chain line position in FIG. 6) which is a supply position and a body retracted position which is a closed position. Has become. The lower communication hose 20 communicates with the lowermost position of the tank 17 to form an outflow portion from the tank, and the suction hose 24 communicates with the right side portion thereof.

Further, as shown in FIG. 6, a fertilizer pump 22 is fixed to the left main frame 10a at an intermediate portion between the front wheels 2 and the rear wheels 3 toward the outside of the machine body, and the pump is applied to the left main frame 10a.
A transmission 23 for a pump is fixed to an upper rising portion of the left main frame 10a at the rear of the fuselage 22.
A tip of the suction hose 21 communicates with the fertilizer pump 22, and discharge hoses 25 ... Extend from four screw pump portions described later, respectively. Further, four link switching valves 26 are installed in the link device 11 portion, and the discharge hoses 25 communicate with the valves 26, respectively. Further, one return hose 27 is connected to the switching valve 26, and the other end of the return hose 27 is connected to the fertilizer pump 22. And the switching valve 26
The supply hoses 29, which are in communication with the discharge hoses 25 through the nozzles, are divided into left and right sides by the planting section 12 and are arranged on the side of each planting claw 13 as shown in FIG. It communicates with 30 ...

Further, as shown in FIG. 6, a planting PTO shaft 31 extends from the mission case 9 along the right main frame 10b, and power is transmitted from the PTO shaft 31 to the pump transmission 23 through a chain 32. Has been done. Further, the pump transmission 23 is arranged on the rear upper part of the fertilizer pump 22 on the left side of the machine substantially in the same plane in the front-rear direction, and its operation levers 33, 34 are arranged toward the outside of the machine left. There is. In FIG. 6, reference numeral 35 is a traveling axis, which is the mission case 9
From the rear axle pipe 36. Also, the code 3
7,37 are left and right rear axle cases, 39,39 are these cases 3
The left and right brake pedals that operate the brakes built into the 7,37.

As shown in detail in FIGS. 2 and 4, the pump transmission 23 has a case 41 fixed to the R-shaped rising portion of the left main frame 10a with a bracket 40 by a bolt. The case 41 rotatably supports an auxiliary transmission shaft 42, a counter shaft 43, and a main transmission shaft 45. An auxiliary transmission gear 46 is slidably supported on the auxiliary transmission shaft 42, a counter gear 47 is integrally mounted on the counter shaft 43, and a main transmission gear 49 is slidably supported on the main transmission shaft 45. The auxiliary transmission gear 46 moves at a low speed by the auxiliary transmission lever 34,
It can be operated in three positions of neutral and high speed, and the main transmission gear 49 can be operated in four positions of first to fourth speeds by the main transmission lever 33 (see FIG. 5). The auxiliary and main speed change levers 34 and 33 are the same as the case 41
Is provided on a cover 50 for covering the vehicle, and the cover 50 is attached to the outer side of the machine body in an obliquely upward direction close to the vertical. On the other hand, the input sprocket 51 and the output sprocket 52 are fixed to the portions of the auxiliary transmission shaft 42 and the main transmission shaft 45 that project from the case 41, and the input sprocket 51 has the chain 32 from the planted PTO shaft 31. It is wrapped around and the output sprocket 52 and the interlocking shaft described later.
The chain 55 is also wound around the sprocket 54 fixed to 53. Further, the mounting bracket 40 to which the case 41 is attached rotatably supports the interlocking shaft 53 via a bearing 86 at the tip portion thereof, and a cover 56 covering the chains 32, 55 and the sprockets 51, 52, 54. Is fixed.

Therefore, the side surface of the bracket 40 opposite to the case 41 constitutes a case body 81 of the chains 32, 55 and the sprockets 51, 52, 54. The case body 81 is formed with a first notch 82 having a predetermined length and extending vertically from an opening 82a opening downward. Further, the cover 56 covering the chain and the sprocket is formed with a second notch 83 extending laterally for a predetermined length from an opening 83a opening to the side, and the cover 56 is formed by a bolt 84 and a nut 85. It is fixed to the case body 81. Furthermore, in the case body 81,
A bearing 86 supporting the interlocking shaft 53 is inserted into a bearing holder 87, and the bearing holder 87 is fixed to the case body 81 via bolts and nuts.

On the other hand, as shown in detail in FIGS. 1 and 3, the fertilizer pump 22 is a synthetic resin case piece 59a, which is fixed to the lower portion of the horizontal portion of the left main frame 10a by a bolt via a bracket 57 ,. 59b, and these case pieces are bolted with an annular plate 60 made of synthetic resin interposed therebetween.
It is fixed together at 61. And one case piece
59a has a structure capable of rotatably supporting six drive shafts 62 on the same circumference, and has a central gear 63 at its center.
A central shaft 65 fixed to is rotatably supported. Gears 66, which mesh with the central gear 63, are fixed to the drive shafts 62, and one drive shaft 62 extends through the case piece 59a, and a sprocket 67 is fixed to the extending portion. Has been done. Further, the interlocking shaft 53 rotatably supported at the tip of the mounting bracket 40 of the transmission 23 extends forward of the machine body along the main frame 10a, and the front end portion of the interlocking shaft 53 bears on the fertilizing pump mounting bracket 57.
It is rotatably supported through 90. The bearing 90
Is inserted and locked in a bearing holder 91, and the bearing holder 91 is inserted and locked in a fertilizer pump mounting bracket 57. Further, a sprocket 69 is fixed to the tip end portion of the interlocking shaft 53, and a chain 70 is wound between the sprocket 69 and the sprocket 67 of the drive shaft 62. The sprockets 67, 69 and the chain 70 are covered with a cover 71 attached to the bracket 57. Further, the other case 59b has a structure in which six screw pumps 72 can be arranged on the same circumference, and the screw shafts 73 of these screw pumps 72 are connected to the drive shaft 62 through joints 75, respectively. are doing. The fertilizer pump 22
Has a structure that can install 6 screw pumps and drive shafts, since it is common for 6 rows, but Honda transplanter 1 has 4
Since it is a row planting, only the four screw pumps and drive shafts near the center of the machine are attached, and the remaining two mounting holes near the outside of the machine are closed. The discharge hoses 25 extend from the four screw pumps 72 so as to communicate with each other. Further, a portion between both case pieces 59a, 59b surrounded by the annular plate 60 is a sub tank 76, and the suction hose 21 communicates with the sub tank 76 at a lower bulge portion 60A thereof. With drain hose
77 is in communication, and the return hose 27 is in communication with the nozzle port 60B above it. Drain hose
77 is a rubber cap 77a on the tip as shown in detail in Fig. 10.
Consisting of a bellows-shaped member made of rubber, which extends upward without passing through the portion without the screw pump 72 located outside the fuselage to the side of the fuselage, and at the position where the tip end is upward, U-shaped locking device 79 fixed to the case piece 59b
Is inserted and retained in.

 Next, the operation of this embodiment will be described.

First, the rotation of the engine 6 is appropriately changed by a mission in the mission case 9, the rotation is transmitted to the front wheels 2 and the rear wheels 3 to drive the machine body 5, and when the work lever is set to the on position, the planted PTO is set. Each device of the planting part 12 is driven via the shaft 31, and the sub-transmission shaft 46 of the pump transmission 23 is rotated via the chain 32. Then, the predetermined rotation is transmitted to the counter shaft 43 by the engagement of the predetermined gear of the auxiliary transmission gear 46 and the predetermined gear of the gear 47 on the counter shaft 43 based on the selected position of the auxiliary transmission lever 34, and further the selected position of the main transmission lever 33. And a counter gear of the main transmission gear 49 based on
The gear is changed by meshing with a predetermined gear of 47, and the rotation is transmitted to the interlocking shaft 53 via the chain 55.

Then, the rotation of the interlocking shaft 22 is transmitted to the predetermined drive shaft 62 of the fertilizer pump 23 via the chain 70. The rotation of the drive shaft 62 is transmitted to the other drive shafts 62 through the gear 66, the center gear 63 and the gear 66, and the drive shafts 62 ...
To drive each screw pump 72. Then, these screw pumps 72 suck the paste fertilizer in the sub-tank 76 and discharge it to the discharge hoses 25, respectively, and further continuously apply fertilizer from the nozzles 30 via the switching valve 26 and the supply hose 29. As a result, the paste fertilizer is applied to the lateral portions of the seedlings planted by the planting claws 13 in a striped manner.

Further, the fertilizer application pump 22 and the pump transmission device 23 are interlocked via the interlocking shaft 53, and the interlocking shaft 53 is attached as follows. First, the interlocking shaft 53 on the fertilizing pump 22 side is inserted and locked in the bearing 90 and the bearing holder 91, and the bearing holder 91 is inserted and locked in the bracket 57 for mounting the fertilizing pump. And a transmission for a pump
The interlocking shaft 53 on the 23 side is inserted into the bearing 86, and in this state, the bearing holder 86 is fixed via the notch 82 of the case body 81 via the bolt and the nut. Further, the notch 83 of the cover 56 is guided so as not to contact the interlocking shaft 53, and the cover
56 is fixed to the case body 81.

Therefore, even if the bearing holder 91 fixed to the case body 81 via bolts and nuts is loosened, the interlocking shaft 53 is dropped by the notches 82 and 83. And interlocking axis
The 53 position does not shift significantly.

[Brief description of drawings]

FIG. 1 is a side sectional view showing the main structure of a speed change interlocking device according to the present invention, FIG. 2 is a side view of a pump speed changer, FIG. 3 is a front view of a fertilizer pump, and FIG. 4 is a pump speed changer. FIG. 5 is a front sectional view of the apparatus, FIG. 5 is a front view of the apparatus, FIG. 6 is a plan view showing the main structure of a lateral row fertilized rice transplanter, and FIG. 7 is a side view showing the lateral row fertilized rice transplanter. The figure is a plan view thereof. 22 …… fertilizer pump (actuator), 23 …… pump transmission (transmission), 53 …… interlocking shaft (transmission shaft), 56 …… cover, 81 …… case body, 82 …… (first ) Notch, 83 ……
(Second) notch.

Claims (1)

(57) [Scope of utility model registration request] 1. A transmission interlocking device comprising an operating device, a transmission, and a transmission shaft for interlocking the operating device and the transmission, wherein the transmission shaft is mounted on a bearing attached to one of the operating device and the transmission. And a first notch extending in a predetermined direction is formed in the case body on the other side of the actuating device and the transmission, and a cover body fixed to the case body is provided with respect to the first notch. A second notch extending in the lateral direction is formed, the transmission shaft is guided through the first notch, and the second notch is guided by the transmission shaft so that the cover body is attached to the case body. A transmission shaft mounting device in a gear change interlocking device that is fixed.