JPH0551013U - Lifting device for walking rice transplanter - Google Patents

Abstract

(57) [Summary] [Purpose] In a structure equipped with a lifting cylinder that performs lifting control and horizontal control of a machine body and a rolling cylinder, the machine body is compactly assembled, and maintenance of accessory devices disposed below these machines is improved. [Structure] Lifting cylinder (6
5) and a rolling cylinder (70) for performing horizontal control of the airframe, and these cylinders (65) (70)
One end side of the cylinders (65) (70) is provided so that the other side thereof can be released upward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lifting device for a walking rice transplanter, in which a single seedling of seedlings is picked up from a seedling mounting table that reciprocates left and right by a planting claw and sequentially planted in a field.

[0002]

[Prior Art]

 In the case of providing an elevating cylinder for performing elevating control of this kind of machine body, the elevating cylinder is arranged above the mission case or in an excess space below the engine base.

[0003]

[Problems to be solved by the device]

 However, in such a case, there are drawbacks that the total height of the lifting cylinder installation portion becomes high and the entire length of the machine becomes long.

[0004]

[Means for Solving the Problems]

 Therefore, the present invention comprises an elevating cylinder for controlling the elevation of the machine body, and a rolling cylinder for performing horizontal control of the machine body. One end side of each cylinder can be used as a fulcrum to release the other side of the cylinder upward. By providing the cylinder above the transverse feed drive member and gear shift operation member in the vicinity of the mission case, the overall length of the machine can be shortened, the front-rear balance can be improved, and one end of the cylinder can be opened to place the cylinder below this. This makes it possible to facilitate maintenance such as the lateral feed drive member and gear shift operation member provided.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a plan view of a main part, FIG. 2 is an overall side view of a walking rice transplanter, FIG. 3 is a plan view of the same, FIG. 4 is a side view of a body frame part, and FIG. 5 is a plan view of the same. Inside (1) is an engine, (2) is a transmission case, (3) is a planting case that is connected to the rear of the mission case (2) through a transmission pipe (4), and (5) is the planting case. Steering handle connected to (3) via handle frame (6), and (7) and (7) can be moved up and down via left and right swing cases (8) and (8) on both left and right sides of the mission case (2). A pair of left and right paddy wheels to be supported on, (9) a front low rear high seedling mount which is reciprocally slidably mounted on the upper side of the handle frame (6) via guide rails (10) (11). , (12) is attached to the planting case (3) via a planting arm (13). Take out seedlings from one seedling from the seedling placing table (9) and plant them in the field. A side strip fertilizer applicator for carrying out fertilization along the inner side of the planting claw (12) seedling planting position, and (17) is an engine base (18) and a handle frame (6) of the engine (1). A single planted field flattening float which is supported on the lower side by a front link (19) and a planting depth adjusting lever (20), and (21) is the engine (1) and engine fuel tank. A bonnet covering the upper side of (22), etc., (23) a bumper fixed to the front end of the engine stand (18), (24) a main gear shift lever, (25) a recoil lever, and (26) a left and right side clutch. Lever, (27) is a clutch lever with planting, (28) is hydraulic pressure rise. Lever, (29) the main clutch lever (30) is taking quantity adjustment lever.

The transmission pipe (4) is arranged in the front-rear direction at the center of the machine body, and the flange portion (4a) at the front end is detachably attached and fixed to the rear end of the mission case (2), and the rear end is sheet metal. The T-shaped planting case (3) formed by the above is welded and fixed to the shaft insertion port (3a), and the front end of the handle frame (6) is welded and fixed to the rear side of the planting case (3). The pipe (4), the planting case (3), and the handle frame (6) are integrally welded to improve the mounting accuracy between the planting claw (12) and the seedling table (9).

In addition, two left and right pipes (32) (32) having a relatively small diameter and having a front end side fixed to the upper end of the fixed bracket (31) on the rear side of the mission case (2) are connected to the transmission pipe ( 4) Extend to the rear end of the handle frame (6) from above in a side view and fix it by welding to both left and right sides of the handle frame (6) so that it is between the mission case (2) and the handle frame (6). The pipes (4), (32) and (32) are integrally connected to each other in a state of forming a triangle in a side view, and these three pipes (4), (32) and (32) reduce the weight to improve bending and torsional rigidity. It constitutes an excellent aircraft.

Then, as shown in FIG. 6, the planted transmission shaft (33) which is the PTO shaft of the mission case (2) is inserted into the transmission pipe (4), and the transmission shaft (33) is used to A planting arm (13) supported on both left and right sides of the planting case (3) is driven. The transmission pipe (4) and the left and right pipes (32) (32) (32) on the front side of the planting arm (13). ) With the front pivot plate (34), and the transmission pipe (4) and the left pipe (32) behind the pivot plate (34) are integrated with each other via the rear pivot plate (35). In addition to connecting, the left and right pipes (32) (32) themselves are directly fixed to the handle frame (6) at the rear side of the planting arm (13), and these pipes are provided in front of and behind the side planting arm (13). (4) (32) (32), frame (6), pivot plates (34) (35) To prevent displacement of the arm drive shaft (13a) mounting part of the planting arm (13) (unbalanced load due to crank movement of the planting arm (13) causes the shaft (13a) mounting part to move. It is configured to prevent displacement of the table (9) and stabilize the seedling yield.

As shown in FIG. 7 to FIG. 8, the gate-shaped left and right frames (37) are provided on the front and rear lateral plates (36a, 36b) provided laterally between the rear ends of the left and right pipes (32), (32). The transverse feed chain case (38) is integrally connected via (37), and the transverse feed chain (41) is inserted into the chain case (38) via the drive sprocket (39) and the floating sprockets (40) (40). The lateral feed body (42) that is stretched and attached to the chain (41) is engaged and connected to the bracket (43) protruding from the front side of the seedling stand (9), while the sprocket of the drive sprocket (39) is engaged. The shaft (44) is extended downward and is attached to the lower end floating sprocket (45) of the sprocket shaft (44) and the fixing bracket (46) of the bracket (31) via a tension adjusting plate (47). Wh A transverse feed transmission chain (49) is stretched between the transmission shaft (48) and the transmission shaft (33) between the transmission case (2) on the left side of the transmission pipe (4) and the rear pivot plate (35). And a slide screw (50) parallel to the screw shaft (50), and a slider (51) coupled to the screw shaft (50) is integrally connected to the transmission chain (49) to output from the transmission case (2). When the screw shaft (50) rotates and the slider (51) reciprocates forward and backward, the transverse feed body (42) reciprocates left and right through the chains (49) (41) to move the seedling table. It is configured to perform the lateral feed of (9). Reference numeral (52) is a mounting plate for mounting the fertilizer applicator (14) fixedly mounted on the pipes (32) (32).

As shown in FIG. 6, the mission case (2) includes an input shaft (2a), a traveling speed change shaft (53), a traveling speed change output shaft (54), a pair of left and right traveling output shafts (55) (55), The input shaft (2a) is provided with an input pulley (58), which is equipped with a variable stock shaft (56) and a planted output shaft (57), and which is belt-connected to the engine (1), at the left end of the input shaft (2a). A hydraulic pump device (61) in which a hydraulic pump (59) connected to the right end and a hydraulic valve (60) are integrally formed in the same block is fixed to the right side of the mission case (2) and inserted into the swing case (8). The front end of the transmission shaft (62) is connected to the traveling output shaft (55) and the rear end is connected to the axle (63).

As also shown in FIG. 9, an elevating cylinder (65) parallel to the left and right pipes (32) (32) via a rearwardly inclined bracket (64) at approximately the center of the rear upper surface of the mission case (2). , And the tip of the piston rod (65a) of the cylinder (65) is connected to the slider (66) slidably provided on the left and right pipes (32) and (32) through a cylinder body (67) which is a swing shaft. The slider (66) is reciprocally slid back and forth when the cylinder (65) is expanded and contracted by the guide of the pipe (32), and the bracket (67) through which the rolling shaft (68) is inserted is inserted into the bracket (67). 69) through which the rolling cylinder (70) is attached, the piston rod (71) of the cylinder (70) is connected to the rolling shaft (68) through the link (72), and the link (7) 3), the swing rod (74) and the arm (75) are used to connect the left and right swing cases (8) and (8) to both ends of the rolling shaft (68), and the slider (66) is moved by the lifting cylinder (65). The left and right traveling wheels (7) (7) are simultaneously raised or lowered in the same direction by sliding, while the rolling cylinder (70) rotates the rolling shaft (68) to lower one traveling wheel (7). The other traveling wheel (7) is raised to tilt the body to the left and right.

Further, a pitching sensor arm (77) is attached to the engine base (18) through a bearing (76), and the arm (77) which abuts the tip on the front surface of the float (17) is hydraulically operated. The lifting shaft (78) of the device (61) is connected to the arm (77), the lifting of the float (17) is detected by the arm (77), and the lifting cylinder (65) is automatically controlled. ) Of the transmission case (2) is adjusted to keep the planting depth almost constant, and a pendulum type rolling sensor (80) is provided on the right rear part of the mission case (2) through a bearing (79), and a hydraulic system (61) is provided. The rolling sensor (80) is connected to the rolling operation spool (81), and the sensor (80) detects the lateral inclination of the machine to automatically control the rolling cylinder (70) to support the machine substantially horizontally. The horizontal control is performed.

Further, the main clutch arm (82) and the left and right side clutch arms (83) and (83) are arranged on the upper surface of the front part of the mission case (2), and the front and rear direction is approximately at the center of the left and right width of the upper part of the mission case (2). A transmission transmission operating shaft (84) is provided in the transmission, and a stock shift lever (85), a seedling platform lateral feed shift lever (86), and a planted clutch arm (87) are provided in the input pulley (58). They are arranged on the left side of the case (2) and on the rear side.

Furthermore, the slider (66) is a gate-shaped cover plate (a gate-shaped cover plate (a) that surrounds the left and right pipes (32) in a rectangular cross section on the lower surface of a mounting plate (88) fixed to the lower part of the tubular body (67). 89) is detachably fixed via a bolt (90), and a transmission case is inserted through a resin member (91) having a split into two parts, which is filled between the mounting plate (88) and the cover plate (89). It is configured to slide back and forth on the left and right pipes (32) and (32) between (2) and the front pivot plate (34).

The lifting and rolling cylinders (65) and (70) have mounting pins (92) and (93) attached to the tips of the piston rods (65a) and (71) on the tubular body (67) and the link (73). The left and right brackets (64) and (64) fixed to the upper surface of the mission case (2) and the cylindrical body (67) are fixed at their base ends to extend the front end side forward. The front base end portions of the cylinders (65) (70) are detachably connected to the front kite-shaped attachment portions that open the upper portions of the brackets (69) through the attachment pins (94) (95). Then, by removing the rear mounting pins (92) (93) of the cylinders (65) (70), the front mounting pins (94) (95) are used as pivot points for the cylinders (65) (70). ) Up Maintenance of the main gear shift operation member and the horizontal feed drive member such as the main gear shift operation shaft (84) and the horizontal feed transmission chain (49) which are arranged below the cylinders (65) (70). While each pipe (4) (32) (32) and each cylinder (65) (70) surrounds each of these members (49) (84), that is, the cylinder (65) and the pipe ( 4), and the left and right sides are surrounded by the pipes (32) and (32) so as to protect them.

The present embodiment is configured as described above, and the airframe frame is composed of a plurality of pipes (4) (32) (32) having a relatively small diameter, of which the upper two pipes (32) ( 32) are arranged in parallel with the centerline of the aircraft in a plan view, and an elevator cylinder (65) for raising and lowering the aircraft is placed substantially in the center of the left and right pipes (32) (32), and swing cases (8) on both left and right sides are provided. The swing rod (74) extending rearward from the base end and the ascending / descending cylinder (65) are connected to each other through the slider (66) on the left and right pipes (32) and (32). Since it slides back and forth, it is possible to reduce the weight of the aircraft without the need to install a separate lifting guide, and the two left and right pipes (32) (32) that make up the aircraft serve as guides. , Axis of cylinder (65) It is possible to reliably and firmly regulate the rotation of the surroundings, and to perform good traveling without swaying the airframe, thus improving traveling performance.

In addition, since the transmission pipe (4) from the rear side of the mission case (2) to the base of the handle (5), the planting case (3), and the handle frame (6) are made into a main frame having an integrated welding structure. However, as long as the accuracy of each of these parts is ensured, inconveniences such as changing the positions of the planting claw (12) and the seedling intake of the seedling table (9) during assembly can be eliminated, and the assembly accuracy can be improved stably. .. In addition, the main frame has a welded integral structure without the flange joint, and the left and right pipes (32) (32) of relatively small diameter and the transmission pipe (4) serving as the main frame have a triangular structure in a side view. Therefore, it is possible to reduce the weight of the machine body and to make it strong in bending and torsional rigidity.

Furthermore, the upper and lower pipes (4) (32) (32) are integrally joined by the front pivoting plate (34) at the front and rear intermediate portions of the pipes (4) (32) (32). As a result, a more rigid body frame structure can be formed, the proposed support of the slider (66) can be stabilized, and the swing rod (8) that receives the load from the wheel (8) can be attached to the slider (66). Since it is connected to the cylinder (65) side in the vicinity of, the distortion can be suppressed to the minimum and the stability of the machine body can be improved.

Further, the cylinders (65) (70) are arranged above the lateral feed drive member and the gear shift operation member such as the lateral feed transmission chain (49) and the main shift operation shaft (84), and are arranged rearward. By removing the attachment pins (92) (93) on the side, the attachment pins (94) (95) on the front side are used as pivot points to open the rear side upward, and these attachment members (49) (84) are opened. This makes it easier to perform maintenance, etc. Therefore, it is possible to make it convenient for maintenance and inspection of the lateral feed drive system and speed change operation system.

[0020]

[Effect of the device]

 As is apparent from the above-described embodiments, the present invention is provided with an elevating cylinder (65) that controls the lifting and lowering of the machine body, and a rolling cylinder (70) that controls the left and right of the machine body, and these cylinders (65) ( Since the cylinder (65) (70) and the other side of the cylinder (65) (70) can be released upward with one end side of the cylinder (70) as a pivotal fulcrum, for example, the cylinder (65) (70) is laterally fed near the mission case (2). It is provided above the drive member (49) and the speed change operation member (84) to shorten the overall length of the body and improve the front-rear balance, and open one end side of the cylinders (65) (70). By releasing it, it is possible to make the maintenance of the lateral feed drive member (49) and the speed change operation member (84) easy, and so on, which is a remarkable effect.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of a machine body elevation control unit.

FIG. 2 is an overall side view of a rice transplanter.

FIG. 3 is an overall plan view of a rice transplanter.

FIG. 4 is a side view illustrating a body portion.

FIG. 5 is an explanatory plan view of a machine body section.

FIG. 6 is a cross-sectional explanatory view of a mission case portion.

FIG. 7 is a plan view of a lateral feed drive unit.

FIG. 8 is a side view of a machine body elevation control unit.

FIG. 9 is a rear view of the machine body elevation control unit.

[Explanation of symbols]

 (2) Mission case (65) Lifting cylinder (70) Rolling cylinder

Claims (1)

[Scope of utility model registration request] 1. A lift cylinder for controlling lift of a machine body,
An elevating device for a walking rice transplanter, comprising: a rolling cylinder for performing horizontal control of the machine body, and one end side of each of these cylinders being configured as a fulcrum of rotation so that the other side of the cylinder can be released upward.