JPH077221Y2 - Seat support device for passenger work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a seat seat supporting device of a riding work machine such as a riding rice transplanter, and more particularly to a structure of the seat seat supporting device.

(B) Conventional Technology Generally, a passenger working machine has an engine mounted on the front part, the working machine is mounted on the rear part, and a seat is provided on the upper part of the body frame in the central part. For example, a riding rice transplanter has an engine and a fertilizer tank loaded in the front part, and a rear part supports a working machine for planting and fertilizing, etc. via a link device so that it can be raised and lowered, and a mission located in the front part. It has a case, a rear axle case located at the rear, and an airframe for connecting them. And, on the machine body frame, a seat seat normally supported by four frames is arranged, and a hydraulic cylinder for raising and lowering the working machine is passed between these frames, The PTO shaft for power transmission to the work machine mounted on the rear part is also passed through.
In addition, the connecting portion of the PTO shaft is also provided in the vicinity of these four frames and is configured to be removable. Further, the fertilizer in the fertilizer tank is sent to the rear working machine on either the left or right side of these frames. There is a fertilizer pump etc.

(C) Problems to be solved by the invention However, as described above, when the seat of the passenger rice transplanter is supported by the four frames, these frames and frames are removed when the PTO shaft connection part is attached and detached. Detachment work is hindered by the reinforcing member, which requires a lot of work time, resulting in poor work efficiency. Further, since the fertilizer pumps arranged on the sides of these seat seat support frames travel to the outside, there is a risk of an obstacle when a worker gets on and off, and it is necessary to secure an appropriate mounting place.

Therefore, an object of the present invention is to provide a seat support device that facilitates the attachment / detachment of the connecting portion of the PTO shaft and secures a mounting location for a fertilizer pump or the like.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances, and, for example, as shown with reference to FIG. 1, FIG. 2 or FIG. In the riding work machine (1) having a seat above the vehicle, the body frame (19)
Is composed of two substantially horizontal front and rear frames (19a) and (19b) arranged in parallel with each other in the longitudinal direction of the fuselage, and these front and rear frames (19a) and (19b) are respectively arranged. Rear frames (46a) and (46b) are erected, and the front and rear frames (19b) are further provided with the rear frames (46b).
Stand the front frame (45b) in front of the
While integrally connecting the frame cover (47) to the upper ends of the front and rear frames (45), (46a) and (46b) of the book,
A seat support stay (51) is obliquely fixed between the rear frame (46a) standing on the other front and rear frame (19a) and the frame cover (47) in front of the rear frame (46). Another device storage space is formed in front of the rear frame (46a) above the front and rear frames (19a), and the seat (8) is mounted on the frame cover (47).

(E) Action Based on the above configuration, the seat seat (8) is firmly fixed by the three front / rear frames (45), (46a), (46b), the frame cover (47) and the seat support stay (51). It is supported. The front and rear sides of the two front and rear frames (19a) and (19b) arranged substantially parallel to each other in the front-rear direction of the fuselage on the side where the front frame (45) is not erected. A space is formed above the frame (19a) and in front of the rear frame (46a), and other space such as a fertilizer pump is attached to the space. In addition, since the seat supporting device is integrally and firmly configured as described above, various spaces are created due to the small number of reinforcing members, and this space is used to locate inside the working machine (1). Equipment repair and PTO shaft connection (3
Desorption of 1).

The reference numerals in parentheses refer to the drawings and do not limit the configuration in any way.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 4, the riding rice transplanter 1 has a traveling machine body 5 supported by front wheels 2 and rear wheels 3. The traveling machine body 5 has a front frame 6 at the front portion of the front wheels 2. An engine 7 is mounted, and a fertilizer tank 4 is arranged on the lower side across the left and right of the frame 6. Then, the seat 8
The driver's seat 9 is arranged so as to be located at. Further, the upper link 10a and the lower link 10b are provided behind the traveling vehicle body 5.
A working machine 11 for planting and fertilizing is vertically movably supported by a parallel link device 10 made up of a plurality of planters 12, floats 13 and two mat seedlings in the vertical direction. A long seedling stand 15 that can be semi-placed is provided.

On the other hand, in the traveling machine body 5, a transmission case 16 is arranged on the front wheel portion thereof, and a rear axle case 17 is arranged on the rear wheel portion thereof, and both of these cases 16, 17 have a rectangular cross section along the longitudinal direction of the machine body. Frame made of shaped pipe structure
Two front and rear frames 19a and 19b, which are arranged in parallel with each other at 19 at intervals, are connected and coupled to each other to form the traveling vehicle body 5. Further, the input case 20 is arranged on one side of the seat case 16, power is transmitted from the engine 7 to the mission inside the case 16, and front axles 21, 21 are connected and supported on both sides of the case. Done, front wheel 2
Is vertically movably suspended and power is transmitted to the front wheel 2. The mission case 16 is fixed to a bracket 22 fixed to the front end portions of the two frames 19a and 19b via a mounting plate, and from the mission case 16 at a position above the frame 19 the PTO shaft. 2
5 extends rearward, a traveling transmission shaft 26 extends below the frame 19, and a pin 27 below the frame 19 allows it to swing vertically with a small diameter and long stroke. The cylinder ends of the hydraulic cylinder device 29 consisting of are connected. And the PTO axis 25
1, extends in parallel to the frame 19 and is supported by a bearing 31 installed on one of the seat rear frames 46b, which will be described later. Further, the universal joint 32 is a connecting portion of the PTO shaft. And the working machine 11 via the propeller shaft 33. The traveling transmission shaft 26 also extends in parallel with the frame 19 and is interlocked with the rear axle case 17. As shown in FIG. 4, the hydraulic cylinder device 29 extends slightly upward, and the piston tip has a pin between the two bracket plates 35, 35 fixed to the upper link 10a. Are connected through.

On the other hand, as shown in FIG. 2, the rear axle case 17 is composed of left and right axle case portions 43, 43 and an intermediate case portion 42. The rear axle is supported by the axle case portion 43, and the rear transmission axle 26 The rotation is transmitted to the rear wheel 3 via the shaft and gear inside the case 17. Furthermore, two front and rear frames 19a,
A U-shaped bracket 37 is arranged so as to bridge between the rear ends of the 19b, and the end faces of the two frames 19a and 19b and the U-shaped bracket 37 are fixed to each other via an end fixing plate 39. There is. Then, the lower surface of the concave portion of the U-shaped bracket 37 and the upper surface of the intermediate case portion 42 constituting the rear axle case 17 are fixed by a plurality of bolts.

Further, as shown in FIGS. 1 to 3, front and rear frames
Rear frames 46a and 46b are erected and fixed to 19a and 19b, respectively, to support the seat 8, and a front frame 45 is further erected to the frame 19b on the right side in the traveling direction of the machine body 5. And these three front and rear frames
A frame cover 47 is fixed to the upper ends of the 45, 46a and 46b, and seats are rotatably and fixedly mounted on the frame cover 47. Further, as shown in FIG. 1 or FIGS. 3 (a) and 3 (b), from the middle portion in the vertical direction of the rear frame 46a on the right side in the traveling direction of the machine body 5, as shown in FIG.
A seat support stay 51 is obliquely attached to the bottom of the 47 toward the front, and the center side rear side of the frame 46a and the front and rear frames 19a are connected to each other to form an obliquely L-angled reinforcing stay 5.
2 is fixed. Further, as shown in FIGS. 3 (b) and 3 (d), the rear frames 46a, 46b are fixedly provided with stays 53 extending left and right to lock the body cover (see FIG. 2). A battery loading plate 55 is attached to the left side from the vicinity of the middle portion of the left rear frame 46a via a support rod 56 (not shown). If necessary, the first
Right rear frame 46b and front frame 4 as shown
The reinforcing plate 57 may be inserted in a streak between the first and the second members.

Furthermore, as shown in FIG. 2, the front frame 45 for the seat is used.
A bracket 48a is fixedly mounted on the bracket 48a.
An operating lever 48 is pivotally supported so that its operating portion is located on the side of the seat 8. Also, the rear frames 46a, 46
Upper link 10a and lower link 10 are provided on the upper and lower parts of b.
b is pivoted by shafts 49 and 50, respectively. This allows the rear frame 46a, 4 to support the links 10a, 10b.
6b and frame cover 47 are fixed, and front frame 45
Since the seat 8 is supported by connecting and fixing the frame 8 and the frame cover 47, the seat 8 can be firmly supported to reduce vibrations, and the rear frames 46a and 46 that pivotally support the links.
b is also reinforced, and the rear frames 46a, 46b on which the load of the working machine 11 acts via the link device 10 are made extremely robust. Further, the operating lever 48 can be installed at an optimal position for operation without requiring a special supporting member. Further, in a side view, a universal joint 32 is arranged in the vicinity of the pivot shaft 50 of the lower link 10b, and the propeller shaft 33 is directed from the universal joint 32 toward the working machine 11 through the concave portion of the U-shaped bracket 37. Is extended.

Since the present embodiment has the above-described configuration, the rotation of the engine 7 is transmitted to the input pulley 20 via the belt, and the transmission in the mission case 16 is appropriately changed to the front wheel 2, the traveling transmission shaft 26, and It is transmitted to the PTO shaft 25.
Further, it is transmitted to the mission in the rear axle case 17 via the traveling transmission shaft 26, the rear wheels 3 are driven in synchronization with the front wheels 2, and the rice transplanter 1 travels. At the same time, power is transmitted to the working machine 11 via the PTO shaft 25, the universal joint 32, and the propeller shaft 33, and the planter 12, the seedling stand 15, etc. are driven to perform the planting work. At this time, since the PTO shaft 25 is arranged at a relatively high position due to the arrangement of the hydraulic cylinder device 29 and the frames 19 and 19, the universal joint 32 is also at a high position, but as shown in FIG. Since the propeller shaft 33 extends through the concave portion of the U-shaped bracket 37, the propeller shaft 33 has a gentle inclination even when the working machine 11 is in a lowered planting state, so that the universal joint 32 does not bend greatly. Rotation can be transmitted smoothly. Also, based on the vertical movement of the float 13, the hydraulic cylinder device 29 expands and contracts to control the working machine 11 subtly so that a constant planting state is achieved regardless of the unevenness of the tiller, but the lower link 10b pivots. Since the spindle 50 and the universal joint 32 are close to each other, the working machine 11
Even when the vertical movement of the universal joint 32 is performed, the angular movement of the universal joint 32 and the axial movement of the propeller shaft 33 are small, and smooth power transmission is maintained. Further, since the rice transplanter 1 is rotated at the end of the field, when the hydraulic cylinder device 29 is extended to raise the working machine 11, the position of the universal joint 32 is brought close to the pivot shaft of the lower link 10b.
0b and the propeller shaft 33 rotate about the same pivotal position, so that the universal joint 32 and the propeller shaft 33 smoothly follow the lower link 10b, and the link device 10 and the PTO shaft 25, the universal joint 32, and the propeller shaft 33. Unreasonable force does not work.

Further, the support device for the seat 8 is provided with three front / rear frames 45, 46a, 46b and a frame cover 47 which are erected on front and rear frames 19a, 19b which are arranged in parallel with each other in the front-rear direction of the machine body at intervals. Since it is composed of the seat support stay 51 etc.,
Of the front and rear frames 19a and 19b, the one in which the front frame 45 is not erected, that is, the front and rear frame 19a on the left side in the traveling direction.
Since there is a space above and in front of the rear frame 46a and above the battery plate 55, this portion can be used as a mounting / storing place for other equipment such as a fertilizer pump. Further, since the rear frames 46a, 46b, the front frame 45, the frame cover 47, etc. are integrally and firmly configured,
It is not necessary to mount the L-angled reinforcing stay 52 for reinforcing the rear frame 46b on the right side in the direction of travel, and the gap created for this purpose can be used for attachment / detachment work of the PTO shaft connection and other internal work machine repairs. Be convenient for.

In addition, although the above-mentioned embodiment explained the riding rice transplanter,
Needless to say, it can be applied to other riding work machines such as riding flooded paddy soil clan breeding machines.

(G) Effect of the Invention As described above, according to the present invention, two substantially horizontal front and rear frames (19a), (a) are arranged in parallel with each other in the longitudinal direction of the machine body. 19b), rear frames (46a), (46b) are erected on each of these frames (19a), (19b), and a front frame (45) is further provided on one of the front and rear frames (19b). Standing upright,
And these three front and rear frames (45), (46a),
A frame cover (47) is integrally connected to the upper end of the (46b), and the rear frame (4) of the other frame (19a) is connected.
6a) Since the seat support stay (51) is fixed obliquely from the middle part to the frame cover (47), it becomes a strong seat seat support device and it is possible to have only one front frame (45). The space thus created can be used as a mounting and storing place for other equipment such as a fertilizer pump. In addition, since the seat seat support device is integrally configured as described above, it has a strong structure, and there is no need to use other reinforcing members, so there is a gap and the work of attaching and detaching the PTO shaft connection part is easy and other work. The inside of the machine can be easily repaired.

[Brief description of drawings]

FIG. 1 is a side view of a seat seat supporting apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view of the seat seat supporting apparatus. 3 (a) is a side view of the seat seat supporting device, FIG. 3 (b) is a plan view thereof, FIG. 3 (c) is a front view, and FIG. 3 (d) is a rear view. FIG. 4 is a side view of the riding rice transplanter according to the present embodiment. 1 ... passenger working machine (passenger rice transplanter), 8 ... seat seat, 19a,
19b ... front and rear frame, 45 ... front frame, 46a, 46b ... rear frame, 47 ... frame cover, 51 ... seat support stay.

Claims (1)

[Scope of utility model registration request] 1. A riding work machine having a seat above a body frame, wherein the body frame is composed of two substantially horizontal front and rear frames arranged in parallel with each other in a longitudinal direction of the body. The front and rear frames are respectively erected on the front and rear frames, and the front frame is erected on the front and rear frames of one of the front and rear frames, and the upper end portions of the three front and rear frames are formed. And a frame cover integrally connected to the other front and rear frames, and a seat support stay is obliquely fixed between the rear frame erected on the other front and rear frames and the frame cover in front of the other rear frame. Another device storage space is formed in front of the rear frame, and a seat is mounted on the frame cover. Seat support device.