JP3943247B2 - Ground work machine support structure in transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support structure of a ground working machine in transplantation machine.
[0002]
[Prior art]
It is an example of a transplantation machine provided with ground working machine for leveling a field, Dai掻tasks and seedling planting work at the same time line cormorants cash掻同during planting machine, multiple strip to the rear of the vehicle body with the front and rear wheels A planting device for planting seedlings is supported through a lifting mechanism of a hydraulic lifting link system, and a rotary shaft supported below the seedling stand on the front side of this planting device is provided with a plurality of rotors. It is configured with a scratcher.
[0003]
The cutting device and the planting device are a planting device transmission shaft extending from a rear wheel transmission case that rotates and drives the rear wheel side rear wheel, and a shaft for transmission of the cutting device. It is possible to adjust the cutting height by raising and lowering the cutting device by means of a support mechanism having an operation lever on the planting machine frame side of the planting device. It is configured.
[0004]
[Problems to be solved by the invention]
However, the conventional Such transplantation machine according arrangement, by a support mechanism Dai掻device is ground working machine comprising an operating lever planting machine frame of the planting device, performs adjustment of the cash掻高of merely It is provided as follows.
[0005]
Also, the cash and the take device when is uppermost the planting device storing a state of being uppermost, the risk of such Dai掻devices produce Setto to breakage in the planting transmission shaft or the like of the planting device There is.
[0006]
[Means for Solving the Problems]
Ground working machine supporting structure for transplantation machine of the present invention to solve the above problems is as shown as follows.
[0007]
That is, the ground working machine support structure of the transplanter according to the present invention can raise and lower the planting device 6 for planting a plurality of seedlings on the rear part of the traveling machine body 1 having the front wheel 1a and the rear wheel 1b via the lifting mechanism 3. In the transplanting machine that supports the ground work machine 5 on the front side of the planting apparatus 6 so as to be movable up and down, the ground work machine 5 is located below the lifting mechanism 3 of the planting apparatus 6 and the planting transmission shaft 12. the provided with, the ground working machine 5 is biased upward by the spring 76, the lower side against the elastic force of the ground working machine 5 a spring 76 by Ban intends abutment resistance to increase in the planting device 6 It is configured to retreat and move to .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
1 is an example of a transplanting machine having a ground working machine shown as a riding type transplanting machine A in FIG. 1, a simultaneous rice transplanter having a front wheel 1a and a rear wheel 1b mounted with an engine E in front. The top link is provided with a driver's seat 2 including a handle and a seat seat at the rear portion thereof, and constitutes an elevating mechanism 3 installed at the rear portion of the airframe 1 so as to be movable up and down by a hydraulic cylinder mechanism for automatic planting depth control. 30 and the lower link 31 are connected to a planting machine frame (support frame) 60 of a planting apparatus 6 provided with a scraping device 5 as a ground working machine, and both of them are lift levers provided on the driver's seat 2 20 is configured to be lifted and lowered via the lifting mechanism 3.
[0010]
As shown in FIGS. 2 (A) and 4, the planting device 6 has a seeding table 61 and planting claws 62 a for five-row planting on the planting machine frame 60 with the same configuration as the conventional device. A transmission case (planting transmission case) 63 in which a planting part (planting case) 62 having a square tube-like planting horizontal machine frame (lateral support frame) 65 is integrally mounted. And in the transmission case 63, the transmission shaft 63a transmitted to each planting part 62 is pivotally supported, and this transmission shaft 63a is freely connected to the drive shaft (PTO shaft) 11 provided in the drive case 10 on the traveling machine body 1 side. The planted transmission shaft 12 has a bevel gear or the like housed in the transmission case 63.
[0011]
Further, below the transmission case 63, a plurality of floats 6F having a leveling plate function and a sliding function are provided so as to be movable up and down via the front and rear support links 6a and 6b.
Moreover, the scraping device 5 shown as one embodiment of the ground working machine has both sides of the rotary shaft 50 horizontally installed in the planting width in front of each float 6F via support portions 75 of the support mechanism 7 described later. It supports so that it can rotate freely and can move up and down integrally in conjunction with the lifting operation of the planting device 6. Then, the central portion of the rotary shaft 50 is transmitted from the drive case 10 through a take-out shaft 80 of a detachable power take-out mechanism 8 (described later) so as to be capable of shifting.
[0012]
As shown in FIG. 4, this scraping device 5 is fixed with rotors 5 a to 5 e having a saddle shape and different lengths with a mounting interval of 5 K. By these mounting intervals 5K, the muddy water flow generated by the forward rotation of the rotors 5a to 5e at the time of scraping is smoothly and quickly released to the rear, and the muddy water flow is prevented from being pushed forward by the scraping device 5. Then, the metal portion 50a is arranged through the support portion 75 within the outer mounting interval 5K, and the auxiliary transmission shaft 81 and the universal joint 82 from the take-out shaft 80 (FIG. 2A) within the central mounting interval 5K. A transmission case 51 (FIG. 4) is installed to drive the rotary shaft 50.
[0013]
The rotors 5a to 5e arranged at intervals in this manner can be used to replace the planting strips in front of the planting claws 62a of the planting parts 62 disposed on the rear side, and to the field that has been scraped flat. The seedling can be planted by the planting claws 62a.
Reference numeral 52 shown in FIGS. 3 and 5 is a rotor cover provided so as to prevent muddy water from splashing by covering the upper and side of the rotors 5a to 5e in series, and left and right on the left and right lower support rods 70a. The planting transmission shaft 12 of the planting device 6 is extended at an upper position corresponding to the mounting interval 5K that is not divided and fixed by the rotor cover 52.
[0014]
Next, the power take-off mechanism 8 that transmits the scraping device 5 from the traveling machine body 1 will be described with reference to FIG.
The power take-off mechanism 8 according to this embodiment includes an input shaft 11 extending rearward from the engine E side, the drive case 10 integral with an axle drive case 10a that supports and transmits the rear wheel 1b, and the drive case 10 A transmission mechanism (not shown) that is detachably attached to the lower part of the interior of the vehicle is installed in the interior, and is composed of an extraction case (power extraction case) 86 having a switching lever (transmission lever) 8L.
[0015]
That is, when the take-out case 86 is removed from the drive case 10, the power take-out mechanism 8 attaches a flat cover (not shown) separately prepared with an open opening of the drive case 10 by the mounting screw 8N. By mounting and fixing, it can be configured as a standard riding transplanter without the substitute device 5 attached.
On the other hand, when the working machine A with the replacement device 5 is configured, the above-described take-out case 86 is input to the opened opening in the state where the cover is removed by using the traveling machine body 1 as well. The transmission gear attached to the shaft 11 and the driven gear (transmission gear) attached to the take-out shaft 80 are engaged with each other, and the drive case 10 and the take-out case 86 are fastened by the attachment screws 8N. Yes.
[0016]
In addition, when the power take-off mechanism 8 is attached, the shift lever 8L for shifting operation for turning on and off the power of the scraping device 5 from the drive case 10 or performing a rotational shift is provided on the rear cover as shown in FIGS. By projecting upward through the notch 22 formed in 21, the switching lever 8 </ b> L is made as close as possible to the driver's seat 2 side to facilitate the switching operation.
[0017]
Then, by attaching and fixing the take-out case 86 in a directly attached state to the lower part of the drive case 10 installed in the substantially central part of the airframe between the left and right rear wheels 1b, it is also retrofitted to the standard traveling airframe 1 It can be easily changed and used in the transplanter A equipped with the scraping device 5 depending on the work.
The rear cover 21 shown in this embodiment integrally covers the upper part of the rear wheels 1b on both sides from the seat seat side, and has a step surface 21a for placing a foot on the part covering the upper part of the rear wheel 1b. The rear cover 21 is formed in a concave shape between the left and right step surfaces 21a to provide the notch 22.
[0018]
The switching lever 8L passes between the top link 30 and the lower link 31 of the elevating mechanism 3 and protrudes above the rear cover 21 by bringing the grip portion close to the right inner side of the notch 22 so that the driver seat 2 It makes it easy to operate by approaching the right side behind.
Next, a description will be given of the support mechanism 7 that allows the scraping device 5 configured as described above to be interlocked with the lifting and lowering operation of the planting device 6 and adjusts the scraping work height of the scraping device 5 up and down.
[0019]
The support mechanism 7 includes a planting horizontal machine frame 65 (FIGS. 3 and 4) arranged in parallel along the width of the scraping device 5, and a planting machine erected from the planting machine frame 65. It has a frame 60 and a support rod 70 which will be described later provided with a metal portion 50a that pivotally supports both sides of the rotary shaft 50. A horizontal shaft 72 is rotatably supported on the upper portion of the planting machine frame 60, and a support rod 70 is connected and supported by link arms 71 fixed to both ends of the horizontal shaft 72.
[0020]
The horizontal shaft 72, an operating lever 7L provided at an appropriate position of the horizontal shaft 72, and a lever guide 73 fixed to the planting machine frame 60 so as to position and guide the operating lever 7L are provided. Furthermore, it has a support part (guide) 75 that protrudes forward from the planting horizontal machine frame 65 and supports the middle part of the support rod 70 at the end part thereof so as to be slidable in the vertical direction while preventing lateral vibration. A support member 75a and a spring 76 that is locked to both sides of the horizontal shaft 72 and that has a lower end attached to the rotor cover 52 to bias the support device 5 upwardly. The support rod 70 is made of a pipe material made of a square pipe or a round pipe.
[0021]
Then, the planting machine frame 60 is planted by being tilted forward while being bent in the shape of a letter in a side view as shown in FIG. In addition to being supported as possible, the planting horizontal machine frame 65 and the transmission case 51 are integrally provided in the lower part to form a rigid frame.
Further, the support portion 75 of the support member (support arm) 75a projecting from both sides of the planting horizontal machine frame 65 is along the axis connecting the horizontal shaft 72 and the rotary shaft 50 as shown in FIG. A lower support rod 70a having a metal portion 7a in the lower portion is slidably inserted into the support portion 75, and an upper portion of the lower support rod 70a and an upper support rod 70b are provided in the support portion 75. And the upper support rod 70b are connected to the tip of the link arm 71 with a pin. The support rod 70 is linearly formed by a lower support rod 70a and an upper support rod 70b.
[0022]
Further, the scraping device 5 supported by the support rod 70 is urged and supported upward by a spring 76 provided between the horizontal shaft 72 and the rotor cover 52.
Therefore, the support mechanism 7 of the scraping device 5 configured as described above is formed in a triangular shape in a side view when the planting machine frame 60, the support portion 75, and the support rod 70 are assembled and connected to each other. It forms in the rigid body frame and can support the scraping apparatus 5 stably.
[0023]
In addition, while reducing the weight as a simple structure with as small a frame structure as possible, it is installed compactly between the rear wheel 1b and the planting device 6 as shown in FIG. 2 (A). It becomes possible. Therefore, the planting device 6 can be installed close to the traveling machine body 1, and the machine body length can be shortened.
And the support part 75 which guides the middle part of the support rod 70 so that a slide is possible is diagonally installed so that it may incline back along the axis line which connects the horizontal axis | shaft 72 provided in the upper part of the planting machine frame 60, and the rotary axis | shaft 50. since it has, in the working position in which lowering the Dai掻device 5 can be moved so as to approach as much as possible the Dai掻device 5 to the rear wheel 1b side, the rear wheel 1b is when increasing From the rear to the rear, the storage posture can be smoothly set.
[0024]
A substantially triangular space is formed in the lower part of the rear wheel 1b and in front of the float 6F of the planting device 6. The scraper device 5 is arranged in this space portion, and this is smoothly moved up and down linearly. be able to.
Further, as shown in FIG. 3, the operating lever 7L for adjusting the height of the scraping device 5 is formed by a guide groove 77 formed in a vertical groove shape in a lever guide 73 fixed to the planting machine frame 60. Thus, the positioning and fixing when rotating around the horizontal shaft 72 can be performed as desired.
[0025]
That is, the illustrated lever guide 73 has a plurality of adjustment grooves 77a that can be locked at a position below the guide groove 77 so as to adjust the cutting work height (the cutting height) of the cutting device 5 in a plurality of stages. It is formed in a shape. In addition, an engagement groove 77b is formed in a long groove shape to be positioned and locked at a traveling height at which the scraping device 5 is separated from the ground at the upper position and pulled up to a traveling posture on the road that is stored in the upper portion. In the retracted posture of the scraping device 5, only the planting work can be performed as needed without performing the shaving work.
[0026]
With this structure of the lever guide 73, when performing the simultaneous planting operation, if the operating lever 7L is locked to the lowermost adjusting groove 77a of the guide groove 77, the scraping device 5 descends to the lowest level. It is possible to carry out deep scraping in a state where is lowered. Further, when the operating lever 7L is locked in the upper adjustment groove 77a, shallow scraping with a high scraping height can be performed, and the scraping work adapted to the state of the field can be performed satisfactorily.
[0027]
Further, when the operating lever 7L is positioned in the engaging groove 77b, the scraping device 5 is pulled up by the elasticity of the spring 76 and is in a free state in which it is urged, so that the operating lever 7L is shown in FIG. As shown in Fig. 4, the upper end of the engagement groove 77b is contacted to restrict further movement (upward movement) of the substitution device 5 relative to the planting device 6 in the upward direction.
[0028]
The operation was positioned in the engaging groove 77b lever 7L is upon upward movement also Dai掻device 5 with that for example planting device 6 as shown in FIG. 5 is Noboru Ue the Dai掻device 5 Even if the rotary shaft 50 and the planting transmission shaft 12 come into contact with each other, the scraping device 5 retracts and moves downward against the elastic force of the spring 76 due to the contact resistance. At this time, the operating lever 7L can be released by freely moving in the direction of the arrow in FIG. 3B within the width of the engaging groove 77b, so that the rotary shaft 50 and the planting transmission shaft 12 cannot be connected with each other. It is possible to prevent the hit and favorably support the planting device 6 and the scraping device 5 in the raised posture (running posture) in a light contact state due to the elasticity of the spring 76.
[0029]
Therefore, since both can be arranged as close as possible while preventing mutual damage due to the contact between the rotary shaft 50 and the planting transmission shaft 12, an advantage such that a compact transplanter A can be manufactured, etc. There is.
Transplanter A configured as described above, lowered the planting device 6 in 圃 field, while sliding on the surface float 6F consisting slippery member rotates the Dai掻device 5 by Dai掻transmission shaft 81 Te while they Na performed Dai掻, also causes up and down controls the planting depth of the planting device 6 by the lifting mechanism 3, to the field surface leveled evenly flat by the height adjustment that by the operation lever 7L Thus, seedlings can be planted well at a certain depth.
[0030]
In such a planting simultaneous planting operation, when the operation lever 7L is switched into the engagement groove 77b of the lever guide 73, the machining device 5 is moved by the spring 76 via the support mechanism 7 configured as described above. Since the biasing is supported upward, the operating lever 7L can be easily lifted with a light force to be in the retracted position.
Further, since the amount of increase Dai掻device 5 increases as compared with the conventional, planting work is not performed Dai掻work and it performed well road run lines, etc. is not performed planting work at cash掻同Is something that can be done.
[0031]
Further, since the scraping device 5 is supported by being pulled upward by the spring 76, there is an advantage that the assembling and mounting work of the scraping device 5 with respect to the planting device 6 can be performed efficiently and easily.
Then, as shown in FIG. 5, the scraping device 5 is placed and disposed below the planting transmission shaft 12 of the planting device 6. The scraping device 5 is moved along with the ascent of the planting device 6. When the auxiliary transmission shaft 12 contacts, the scraper device 5 is provided so as to automatically descend and retract.
[0032]
Therefore, when the operating lever 7L is operated to the engagement groove 77b to place the cutting device 5 in the retracted posture, the planting device 6 and the cutting device 5 can be brought as close as possible, so that the body is shortened. And can be greatly separated from the ground, and can be performed well on the road.
In addition, the engagement groove 77b for supporting the scraping device 5 in the raised storage position is formed wide so that when the scraping device 5 comes into contact with the planting transmission shaft 12 of the planting device 6, the descending / retreating operation is performed. The movement can be permitted by allowing the operating lever 7L to freely move (accommodate movement) in the engaging groove 77b, and also prevent problems such as breakage due to the contact between the two.
[0033]
【The invention's effect】
The invention according to claim 1 of the present invention supports a planting device 6 for planting seedlings of a plurality of strips in a rear portion of a traveling machine body 1 having a front wheel 1a and a rear wheel 1b through a lifting mechanism 3 so as to be lifted and lowered. In the transplanting machine that supports the ground working machine 5 so as to be movable up and down on the front side of the planting apparatus 6, the ground working machine 5 is provided below the lifting mechanism 3 and the planting transmission shaft 12 of the planting apparatus 6, and The ground work machine 5 is urged upward by a spring 76, and the ground work machine 5 is retracted and moved downward against the elastic force of the spring 76 by the contact resistance accompanying the ascent of the planting device 6. With this construction, the ground work machine can be placed in a retracted position while preventing the ground work machine from being damaged , and the ground work machine can be compactly installed in the planting device. it can.
[Brief description of the drawings]
FIG. 1 is a side view showing a transplanter for simultaneous planting work according to an embodiment of the transplanter of the present invention.
2A is a plan view showing a configuration of a main part of FIG. 1, and FIG. 2B is a plan view showing an installation configuration of a switching lever.
3A is a perspective view showing a configuration of a main part of FIG. 2, and FIG. 3B is a perspective view showing a relationship between a lever guide and an operation lever.
FIG. 4 is a plan view showing a support structure of the substitution device.
FIG. 5 is a side view showing the support structure of the substitution device and its operation.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 1b Rear wheel 2 Driver's seat 3 Lifting mechanism 5 Braking device 5a-5e Rotor 6 Planting device 7 Support mechanism 7L Operation lever 8 Power take-off mechanism 8L Switching lever (shift lever) 12 Planting transmission shaft 21 Rear cover 22 Notch Part 50 Rotary shaft 51 Transmission case 60 Planting machine frame 61 Seedling stage 62 Planting part 62a Planting claw 63 Transmission case (planting transmission case) 65 Planting horizontal machine frame 70 Support rod 72 Horizontal shaft 73 Lever guide 75 Support Portion 75a Support member 76 Spring 77 Guide groove 77a Adjustment groove 77b Engagement groove 80 Scratch transmission shaft 86 Extraction case K Installation interval

Claims (1)

A planting device 6 for planting a plurality of strips of seedlings on the rear part of the traveling machine body 1 having the front wheel 1a and the rear wheel 1b is supported so as to be movable up and down via the lifting mechanism 3, and the grounding work is performed on the front side of the planting device 6 In the transplanting machine that supports the machine 5 so as to be movable up and down, the ground working machine 5 is provided below the lifting mechanism 3 of the planting device 6 and the planting transmission shaft 12, and the ground working machine 5 is moved upward by a spring 76. The ground work machine support structure in the transplanting machine configured to urge and retract the ground work machine 5 to the lower side against the elastic force of the spring 76 by the contact resistance accompanying the ascent of the planting device 6 .

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