JPS6398308A - Riding type working machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a riding-type work machine in which a rice transplanter or a seeding machine is mounted on a riding-type traveling vehicle body.

[Prior art]

As this type of conventional technology, riding-type rice transplanters are generally
The transmission of the rice transplanting device was installed on the rice transplanting device side.

[Problem that the invention seeks to solve]

However, if the transmission of the rice transplanting device is installed in the rice transplanting device, the transmission case of the rice transplanting device is large and heavy, and the rice transplanting device is attached to one side of the vehicle body, so the overall balance is poor. In addition, there was a tendency for aircraft to become larger. Furthermore, since there is a transmission on the rice-transplanting equipment side, in order to install the operating device on the passenger-type traveling vehicle body where the operator is present, it is necessary to run the operating wire etc. from the rice-transplanting equipment side to the traveling vehicle body side. First, the structure was complicated.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention aims to solve the above-mentioned problems.
In a riding-type working machine in which a working device C is attached to a riding-type traveling vehicle body A, the working device transmission F of the working device C is
This is a riding-type work machine characterized by being installed on the side.

〔Effect of the invention〕

The transmission device F for the work device C of the work device C is connected to the passenger type traveling vehicle body A.
Since it is installed on the side, the working device can be constructed to be light and compact, and the overall balance of the machine body is good. In addition, by making the work device C lightweight, in the case of a type that moves the work device up and down, the lower movement drive device (1) can be a small one, and furthermore, it can be made cheap, small and lightweight. can get.

Furthermore, by providing the working device transmission F of the working device C on the passenger type vehicle body A side, the operating device of the working device transmission device F can be provided on the passenger type traveling vehicle body A side with a simple configuration. It is something.

(Example) A riding-type rice transplanter which is an example of the present invention will be described in detail.

A indicates a riding type traveling vehicle body, B indicates an elevating link mechanism, and C indicates a rice transplanting device as a working device, and this riding type rice transplanter is composed of the above-mentioned ABC.

First, the passenger type traveling vehicle body A will be explained in detail. The body is composed of a main transmission case 1, a connecting frame 2, a vertical frame 3, a rear axle case 4, left and right transmission cases 4a and 4b, a front axle case 5, etc. The connecting frame 2 has a U-shape when viewed from the side, and its tip is fixed to the main transmission case 1. Then, the differential case portion of the front axle case 5, which is provided integrally with the differential case housing the differential mechanism inside the connecting frame 2, is rotated between the main transmission case 1 side and the vertical frame 3 fixed to the connecting frame 2. It is freely connected.

Steps 6 are on the same plane and are provided in front of the cockpit 7 and on both left and right sides.An engine cover 8 is formed integrally with this step, and an engine mounted on an engine stand 9 fixed to the vertical frame 3 is mounted on the engine stand 9. The engine cover 8 covers the front and left and right sides of the engine 10. At the rear ends of the steps 6 and 6 on the left and right sides of the cockpit 7, left and right fenders 6a and 6b are integrally formed to cover the sides of the left and right drive rear wheels 11a and llb, which are formed higher toward the rear. There is. In addition, in the front part of the step 6, there is an auxiliary step 6 formed one step lower.
c is provided.

The vertical frame 3 whose front end is fixed to the connecting frame 2 is constructed of a thick iron pipe in the illustrated example, and a rear axle case 4 is fixed to its rear end. A differential mechanism or a side clutch mechanism is installed inside this rear axle case 4, and the left and right transmission case 4a is connected to the left and right drive rear wheels 11a and
・The configuration is such that power -3= is transmitted via 4b.

In the elevating link mechanism B, the base sides of upper links 13, 13 and lower links 14, 14 are pivotally connected to columns 12, 12 erected on the rear axle case 4, and the rear portions of both links are connected to vertical links 15, 15. It is constructed by connecting. The upper links 13, 13 are attached to the upper end of the piston 16a of the hydraulic cylinder 16 whose base is pivotally connected to the rear axle case 4.
is pivoted.

The rice transplanting device C includes a horizontal case 17a, left and right vertical cases 17b,
The seedling planting transmission case 17 constituted by the seedling planting transmission case 17b is used as a machine frame, and support frames 18, 18 are extended upward from both left and right sides of the seedling planting transmission case 17, and the upper parts of the support frames 18, 18 are provided. are connected by connecting frames 19a and 19b, and a fixed rolling shaft 20b is inserted into a connecting rod 15a that connects vertical links 15 and 15 of the elevating link mechanism B to a rolling bearing cylinder 20a fixed to this connecting frame 19a. The rice transplanting device C is connected to the lifting link mechanism B. Reference numeral 21 denotes a seedling mounting table, the middle part of which is supported by the left and right support frames 18, and the lower end of which is fixed to the seedling planting transmission case 17. It is provided. 19... is a planting device with a planting tool attached to a rotary seedling planting case, with left and right vertical cases 17
b. It is attached to both sides of the rear end of 17b, and the seedling mounting table 21
The seedling tray is configured to divide the matted seedlings placed on the seedling tray into individual plants through seedling openings 23 formed in the board 22 and plant them in the field. 24, 25, and 25 are a center leveling float and left and right leveling floats, respectively, and the rear part of each is an arm 26 extending from the seedling planting transmission case 1-7.
..., and the front part is connected to a support rod 27 extending from the transmission case 17 with seedlings, and a link mechanism (swivel mechanism) 28.
It is attached via the above-mentioned planting device 19...
・It is installed to level the ground in front of the field where seedlings will be planted.

Reference numeral 29 denotes a reciprocating drive device that reciprocates the seedling mounting table 21 from side to side, and includes a rotating body 32 that is integrated with a bevel gear 32 that meshes with a bevel gear 31 that is fixed to a driven shaft 30 that rotates by power from the riding vehicle body A. A lead cuff 1 shaft 34 that engages with a pin 33 stored therein is supported by a case 35 fixed to the planting transmission case 17 so as to be slidable in the left and right direction,
Both ends of the lead cam shaft 34 are connected to left and right connecting arms 36, 36.
It is fixedly connected to the back surface of the seedling mounting table 21 via.

Since the pin 33 rotates in a fixed position due to the rotation of the driven shaft 3o, the lead cam shaft 34 engaged with the pin 33 moves horizontally and reciprocally, and the seedling mounting table 21 connected to the lead cam shaft 34 moves horizontally. is provided to move laterally in both left and right directions. Incidentally, numerals 37 and 37 are sealing bellows made of synthetic rubber and cover the lead cam shaft 34.

Next, to explain the transmission mechanism, power from the engine 10 is transmitted to the hydraulic pump 41 via the pulley 38, belt 39, and pulley 40. A variable pulley 43 and a belt 44 are provided at the tip of the shaft 42 and extend laterally.
- Transmitted to the main transmission case 1 via the pulley 45. The variable pulley 43, belt 44, and pulley 45 constitute a continuously variable belt type transmission E.

Then, power is transmitted from the rear side of the main transmission case 1 to the left and right steering front wheels 46, 46 and the left and right drive rear shafts 11a, 11b, while the drive shaft 47 is extended rearward to perform work. Power is transmitted into a transmission case 48 for driving the machine.

The variable pulley 43 includes a fixed pulley piece 43a fixed to the shaft 42 and a variable pulley piece 43 that can only slide in the direction toward the shaft 42.
b and the actuating cylinder 4 which is loosely fitted to the shaft 42 so as to be rotatable and slidable.
3c and a bullet 43d that urges the variable pulley piece 43b in the direction H via the operating cylinder 43c. By moving the variable pulley piece 43b in the direction, the effective diameter of the variable pulley 43 can be changed by moving the variable pulley piece 43b in the direction.

That is, in FIG. 5, when the operating lever 69 is set to the low speed position, the operating wire 70 is pulled and the operating cylinder 43c moves in the opposite direction against the bullet 43d, so that the variable pulley piece 43b also moves in the opposite direction. However, since the effective diameter of the variable pulley 43 becomes the minimum, the rotational speed of the power to the main transmission case 1 becomes the minimum, and the traveling speed becomes low. (Even if the operating lever 69 is further rotated from the low speed position to the lift position and the variable pulley piece 43b is further moved in the direction, the effective diameter of the variable pulley 43 can be changed to a shape that maintains the above minimum diameter. The pulley 43 is configured as shown in FIG. The effective diameter of the operating lever 69 becomes larger, the rotational speed of the power to the main transmission case 1 becomes larger, and the running speed becomes faster.
is provided with a lever stopper 72 whose position can be adjusted freely from the engaged position of the working clutch to the position where the operation lever 69 is rotated further downward, and the position of the lever stopper 72 allows the operation lever 69 to be moved to the high speed side. The amount of rotation of the variable pulley 43 can be changed, and therefore the maximum effective diameter of the variable pulley 43 can be changed, and the working speed of the working clutch can be changed and adjusted.

The transmission case 48 has two PTO shafts 49 and a second PT.
An O-shaft 50 is provided in parallel, a drive gear 51 is fixed to the rear end of the drive shaft 47, and a gear 53 has a clutch pawl 52 that is rotatably supported at a fixed position on the -PT○ shaft 49.
is meshed with this drive gear 51. Reference numeral 54 denotes a clutch body having a clutch pawl 55, which is operated by a key 56.
P.T.

It is provided to rotate together with the shaft 49. Reference numeral 57 denotes a bullet, which is energized in the direction in which the clutch pawls 52 and 55 are engaged so that power is transmitted to the clutch body 54. 58
A shifter operates the clutch body 54, and is rotatably supported by a pivot shaft 59. These clutch pawls 5
2.55 constitutes a working clutch D, and when the operating lever 69 is turned to the off position, the operating wire 73 is pulled, the shifter 58 is rotated upward around the pivot shaft 59, and the clutch body 54 is released. The working clutch D
The transmission of power is cut off, and the power to the rice transplanting device C is cut off.

Next, when the operating lever 69 is placed in the on position, the operating wire 73 is loosened, and the clutch body 54 is moved in the opposite direction by the trigger 57, the clutch pawls 52 and 55 are engaged, and power is transmitted to the rice transplanting device C. . Note that the clutch body 54 is provided with a notch groove 54a only at the - location, and is provided opposite to an engagement pin 54b fixed to the transmission case 48, so that when the working clutch D is disengaged, the clutch body The notch groove 5 of the body 54
4a engages with the pin 54b, so that the planting claws 19a, 19a of the planting device 19 are always stopped at a position upwardly away from the field, as shown in FIG.

Next, the transmission device F for work equipment will be explained.
A, 60b, 60c, and 60d are gears that are freely rotatably supported on the -PT○ shaft 49 at fixed positions, and grooves 60a', 60b', 60c'', and 6 are formed on the inner diameter of each gear.
0d' is formed. 61a, 61b, 61c, 6
Gears 1d are supported by keys 62 at fixed positions on the second PTO shaft 5o so as to rotate together, and are always in mesh with the gears 60a, 60b, 60c, and 60d.

Reference numeral 63 denotes a speed change key, which is pivotally supported by a pin 65 to a boss body 64 that is non-rotatably but only slidably supported on the -PTO shaft 49, It is fitted into the groove 65. The tip of the shift key 63 is located in the groove 60a of the gears 60a, 60b, 6°c, and 60d.
The rear end is urged toward the mouth by a bullet 66 so as to engage with any one of the terminals ', 60b', 600', and 60dl. Reference numeral 67 denotes a shift lever, and a shifter 68 fixed to the tip thereof engages with the boss body 64. By operating the shift lever 67 in the harness direction, the shift pin 6
3 engages with the grooves 608', 6ob', 60c', and 60d' of any of the gears 60a, 60b, 60c, and 60d to change the rotational speed of the second PTO shaft 50 relative to the first PTO shaft 49. It is configured so that it can be done. The -th PTO shaft 49 is connected to the planting transmission case 1 via a transmission shaft 75 having universal joints 74.
The power is transmitted to the transmission device in 7, and the planting device 19 is driven. On the other hand, the second PTO shaft 50 is connected to the driven shaft 30 via a transmission shaft 77 having universal joints 76 and 76, and transmits power to the reciprocating drive bag N29 of the seedling table 21, so that the seedling table 21 can be moved left and right. It is configured to move back and forth.

However, by operating the gear shift lever 67 in the gear direction,
By changing the rotation speed of the second PTo axis 50 with respect to the TO axis 49, the movement speed of the left and right reciprocating movement of the seedling mounting table 21 relative to the operating speed of the planting device 19 is changed, so the amount of seedlings taken can be changed. It is something that

Next, the vertical movement device 78 for vertically moving the rice transplanting device C with respect to the riding vehicle body A will be explained.

The vertical movement device 78 is the central leveling float 24 of the rice transplanting device C.
It is composed of a hydraulic valve 79 connected to the front part of the field and whose spools are operated by moving up and down together, a hydraulic pump 41, a hydraulic cylinder 16, an elevating link mechanism B, etc., and it can handle the muddy surface of the field and the unevenness of the tiller. Due to the fluctuation of the ground pressure of the central soil leveling float 24 of the rice transplanting device C, the central leveling float 2
When the front part of rice transplanter 4 moves up and down, the hydraulic valve 79 is switched and the hydraulic cylinder 16 is operated, so that the rice transplanting device C is automatically always placed in an appropriate vertical position by the elevating link mechanism B.

The tip of the rotating arm 81, which is operated by the operating lever 69 via the operating wire 80, is in contact with this hydraulic valve 79, and when the operating lever 69 is operated upward to the lift position. The tip of the rotating arm 81 moves the hydraulic valve 79 from the neutral position in the upward direction, allowing the rice transplanting device C to be lifted upward. When the operating lever 69 is placed in the neutral position in the middle of the guide, the hydraulic valve 79 is moved upward from the neutral position. 5, the rice transplanting device C is maintained at a constant position (note that the front part of the central soil leveling float 24 can be moved upward to switch the hydraulic valve 79 in the upward direction, so in reality, the rice transplanting device C is in the neutral state shown in Fig. This is a neutral state in which only the immovable direction of device C is blocked.) Next, when the operating lever 69 is operated downward to the automatic control position, the rotating arm 8]- will no longer restrict the hydraulic valve 79 and will be in an automatic control state by the central leveling float 24.

Reference numeral 82 denotes a sheet metal cover that covers the steering post of the steering handle 83, and is provided inward from the left and right outer sides of the step 6, so that the step 6 is also present on the left and right sides of the cover 82. In addition, the cover 8
Various operation pedals (a clutch pedal, left and right brake pedals, and an accelerator pedal) are arranged below the steering handle 83 at the rear of the vehicle. An operation panel 84 is provided on the top surface of the cover 82.

The riding-type rice transplanter configured as described above is placed in a paddy field, seedlings are placed on the seedling table 21, the machine is moved forward while operating the steering handle 83, and the operating lever 69 is operated downward. When the control lever 69 is in the automatic control position (the position where the operating lever 69 contacts the lever stopper 72), the continuously belt type transmission device E enters a high speed state and rice transplanting work is performed, and the rice transplanting device C is moved by the vertical movement device 78. , is always maintained at the optimum vertical height position.

Next, when turning at the edge of a ridge, operate the operating lever 69 upward to the lift position, the work clutch latch D is turned off, the rice transplanter C is lifted upward, and at the same time the transmission E is in a low speed state. Therefore, the operator can easily perform the turning operation.

After turning, operate the operating lever 69 downward again to shift to the automatic control position (working clutch position).
Rice planting work is carried out again at high traveling speed.

By adjusting the position of the lever stopper 72 (skilled workers set it to the high speed side, unskilled workers set it to the low speed side), the traveling speed during rice transplanting work can be freely adjusted, allowing the worker to It is possible to carry out rice transplanting work that is most suitable and efficient.

In addition, since the transmission device F for the working device is provided on the side of the riding vehicle body A for horizontally moving the seedling mounting table 21 of the rice transplanting device back and forth,
The lateral movement speed of the seedling table 21 can be changed, and an operator can easily change the speed of the seedling table 21 to reciprocate and laterally move the seedling table 21 while riding on the riding vehicle body A. Further, the configuration of the operating system such as the gear shift lever 67 for the gear shifting operation is also simple.

=15- In addition, in the above embodiment, an example was shown in which the present invention was implemented in a riding type rice transplanter in which a rice transplanting device C was attached to the rear of a riding type traveling vehicle body A, but other working devices such as a seeding device etc. The present invention may be implemented in various riding type work machines equipped with the following.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a plan sectional view of main parts, and Fig. 4
The figure is a plan sectional view of the main part, and FIGS. 5 and 6 are operation explanatory diagrams of the main part. Note that the symbols in the figure are as follows.

Claims (1)

[Claims] A riding-type working machine comprising a working device C attached to a riding-type traveling vehicle body A, characterized in that a transmission device F for the working device of the working device C is provided on the riding-type traveling vehicle body A side. .