JP2013034439A - Riding type rice planting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a riding type rice planting machine mounted with a plurality of electric motors in a bonnet.SOLUTION: In the bonnet 6, a travelling/planting driving motor 18 is arranged horizontally with an output axis 18a projecting on a left side orthogonal to the travelling direction of the riding type rice planting machine 1, and a hydraulic pump driving motor 19 having an external form of the motor itself smaller than the travelling/planting driving motor 18 is arranged ahead of the travelling/planting driving motor 18 horizontally with an output axis 19a projecting on the left side orthogonal to the travelling direction of the riding type rice planting machine 1.

Description

  The present invention relates to a riding rice transplanter using an electric motor as a power source, and more particularly to an arrangement structure of an electric motor in a hood of the riding rice transplanter.

  In recent years, due to environmental problems such as global warming, in many industrial fields, it has been studied to change power from an internal combustion engine (for example, a gasoline engine) to an electric motor that does not discharge exhaust gas such as carbon dioxide.

  In general, an electric vehicle that uses an electric motor as power instead of a gasoline engine is well known. Thus, using an electric motor or the like as power instead of an engine using gasoline or the like as a fuel is not limited to an automobile.

  In particular, in recent years, the number of small-scale farmers and household gardens in ordinary households has increased, and agricultural work has also been carried out in urban areas. This has caused not only exhaust gas problems but also noise problems due to engine noise. Yes. As described above, even in a mobile farm machine that performs work in a field, there is a demand for electric power to change power from a gasoline engine to an electric motor.

  Thus, a mobile agricultural machine that uses an electric motor as a power source is conventionally known. For example, an electric motor that drives traveling wheels instead of an engine, an electric motor that moves a hydraulic pump, and the like are mounted in a bonnet, and a tractor that travels using these electric motors as power is devised (Patent Document 1). reference).

  Since the tractor has a relatively large vehicle body and a large bonnet itself among the mobile farm machines, the space in the bonnet is wide, and it is relatively easy to store a plurality of electric motors as a substitute for the engine in the bonnet.

JP 2003-9607 A

  However, in the case of a riding rice transplanter, the vehicle body itself is smaller than that of a tractor, and the size of the vehicle body itself of the passenger rice transplanter is the size of the planting machine connected to the rear part of the vehicle body (number of planting strips). ), The size of the bonnet itself is small especially in a rice paddy machine with a small number of planting lines.

  Furthermore, the passenger rice transplanter improves visibility in front of the passenger rice transplanter from the driver's seat, and on both sides of the bonnet, a step for an operator to perform work on the passenger rice transplanter is provided. The tip portion of the is formed in a tapered shape. This further restricts the space in the hood.

  It is difficult to house and arrange a plurality of electric motors in the hood of a riding rice transplanter where space is limited.

  Then, an object of this invention is to provide the riding rice transplanter which solved the said subject by arrange | positioning a some electric motor efficiently in the bonnet where the said space was restrict | limited.

The present invention includes a traveling machine body (5) supported by traveling wheels (2) and (3), a bonnet (6) provided in front of the traveling machine body (5), and the traveling machine body (5). A riding rice transplanter (1) comprising a planting work machine (15) which is moved up and down by a hydraulic cylinder (13),
A hydraulic pump (24) for supplying hydraulic pressure to the hydraulic cylinder (13);
A first electric motor (18) for driving the traveling wheels (2, 3);
A second electric motor (19) for driving the hydraulic pump (24),
The outer shape of the first electric motor (18) is larger than that of the second electric motor (19),
The first electric motor (18) and the second electric motor (19) are horizontally placed with their output shafts (18a, 19a) orthogonal to the traveling direction of the riding rice transplanter (1), and the hood (6 ) And the second electric motor (19) is disposed in front of the traveling direction of the riding rice transplanter (1) with respect to the first electric motor (18). It is characterized by.

A first control unit (20) for controlling the first electric motor (18);
A second control unit (21) for controlling the second electric motor (19),
In the bonnet (6), the first control unit (20) is disposed above the first electric motor (18), and the second control unit (21) is disposed on the second electric motor ( 19), respectively.

  The first electric motor (18) and the second electric motor (19) are disposed above a transmission case (29) that includes a planting speed change mechanism that shifts the planting work machine (15). The

  Further, the first electric motor (18) and the second electric motor (19) are supported and unitized by a single support member (27).

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, it does not have any influence on description of a claim by this.

  According to the first aspect of the present invention, the first electric motor and the second electric motor are disposed horizontally in the bonnet, and the second electric motor is configured so that the outer shape of the motor is greater than that of the second electric motor. A plurality of motors can be efficiently stored and arranged in the hood of the riding rice transplanter by arranging the riding rice transplanter ahead of the larger first electric motor. As a result, the first and second electric motors and the like can be accommodated in substantially the same volume as a power device such as an internal combustion engine in a passenger rice transplanter equipped with a conventional internal combustion engine, and the cost can be reduced by using the same bonnet. And a common design concept.

  According to the invention which concerns on Claim 2, while arrange | positioning the 1st control unit which controls a 1st electric motor in a bonnet above a 1st electric motor, the 2nd which controls a 2nd electric motor By arrange | positioning a control unit to the side of a 2nd electric motor, a 1st control unit and a 2nd control unit can be efficiently arrange | positioned in a bonnet.

  According to the invention which concerns on Claim 3, a 1st electric motor and a 2nd electric motor are arrange | positioned above the transmission case which equipped the planting speed change mechanism which speeds the planting speed of the planting work machine 15. The first electric motor and the second electric motor can be arranged at a high position with respect to the surface, and the parts can be made common to reduce the cost.

  According to the invention which concerns on Claim 4, a 1st electric motor and a 2nd electric motor are supported by the same support member, and can be unitized, and an attachment structure can be simplified.

The side view of the riding rice transplanter to which this invention is applied. The plan view. The perspective view which shows arrangement | positioning of the electric motor etc. in the bonnet. The perspective view which shows the outline of the power plant etc. of the riding rice transplanter which concerns on embodiment of this invention. The side view. The expansion perspective view which shows the structure in a bonnet. The plan view. The top view of the state which removed the control apparatus. The right view which shows the structure in a bonnet. The left side view. It is a figure which shows the bracket which supports an electric motor, (a) is a perspective view, (b) is a rear view, (c) is a side view, (d) is a top view.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a riding rice transplanter according to the present invention will be described with reference to the drawings.

  The electric riding rice transplanter 1 in this embodiment (hereinafter simply referred to as a rice transplanter) has a traveling machine body 5 supported by a pair of left and right front wheels 2 and a rear wheel 3 as shown in FIG. A planting work machine 15 is connected to the rear of the traveling machine body 5 via a hydraulic cylinder 13 so as to be movable up and down.

  The traveling machine body 5 is provided with a driving operation unit 11 having a steering handle 7 and a driver's seat 10. A battery 25 serving as a driving power source for the rice transplanter 1 is provided at the rear of the driving operation unit 11 (see FIG. 5) It is arranged in a state of being housed in the battery case 12.

  A bonnet 6 that covers an electric motor or the like (see FIG. 3) that is a power unit 17 of the rice transplanter 1 described later is provided in front of the driving operation unit 11. Moreover, as shown in FIG. 2, the front step 16 for an operator to perform work on the rice transplanter 1 is provided on both the left and right sides of the bonnet 6.

  First, the bonnet 6 will be described. As shown in FIG. 1, the shape of the bonnet 6 is formed in a circular arc shape in a side view with a downward slope from the steering handle 7 side toward the front, and both side surfaces of the bonnet 6 are as shown in FIG. 2. Further, it is formed in an arc shape in plan view from the steering handle 7 side toward the front. Thereby, the outer shape of the bonnet 6 itself is formed in a tapered shape having a downward slope from the steering handle 7 side toward the front. The bonnet 6 itself is configured to be removable from the traveling machine body 5, and a headlamp 9 is provided at the front of the traveling machine body.

  Next, the structure of the power unit 17 of the rice transplanter 1 will be described. As shown in FIGS. 3 and 4, the power plant 17 of the rice transplanter 1 is a traveling / planting drive that is a first electric motor that drives the traveling wheels (front wheels 2, rear wheels 3) and the planting work machine 15. The motor 18 has a hydraulic pump drive motor 19 that is smaller than the travel / planting drive motor 18 and that is a second electric motor that drives the hydraulic pump 24 of the rice transplanter 1.

  The power unit 17 is a first control unit that controls the operation of the travel / planting drive motor 18 and a second control unit 20 that controls the operation of the hydraulic pump drive motor 19. It has a hydraulic pump drive motor control unit 21 which is a control unit, and each unit such as a DC converter 22 and a power switch 23 for converting voltage. Furthermore, the power unit 17 includes a bracket 27 that is a support member that supports and fixes each unit.

  As shown in FIG. 5, each unit of the power unit 17 is connected to the battery 25 disposed behind the driver's seat 10 by a wire harness, and power is supplied from the battery 25 to each unit of the power unit 17. Is done. The battery 25 itself is a lithium ion battery.

  Next, the arrangement configuration of each unit of the power unit 17 in the bonnet will be described. As shown in FIGS. 5 and 6, each unit of the power unit 17 is disposed above a mission case 29 that is supported by a bracket 27 and includes a planting speed change mechanism that shifts the working speed of the planting work machine 15. Has been.

  As shown in FIGS. 6, 7, and 8, the travel / planting drive motor 18 is placed horizontally with the output shaft 18 a protruding leftward perpendicular to the traveling direction of the rice transplanter 1. The hydraulic pump drive motor 19 is located in front of the traveling / planting drive motor 18 in a state where the output shaft 19a protrudes to the left orthogonal to the traveling direction of the rice transplanter 1. Arranged in place.

  Above the travel / planting drive motor 18, a travel / planting drive motor control unit 20 having a substantially rectangular parallelepiped casing is disposed horizontally. Further, a DC converter 22 is disposed in front of the traveling / planting drive motor control unit 20.

  The hydraulic pump drive motor control unit 21 is formed of a substantially rectangular parallelepiped casing, and is arranged vertically on the side of the hydraulic pump drive motor 19. The power switch 23 is supported by a bracket 27 in a space formed between the hydraulic pump drive motor 19 and the vertically installed hydraulic pump drive motor control unit 21.

  As shown in FIG. 9, a motor pulley 30 is attached to the tip of the output shaft 18a of the travel / planting drive motor, and a V-belt 31 for transmitting the power of the travel / planting drive motor is wound around the motor pulley 30. It is done. The V belt 31 is also wound around the mission pulley 32, and tension pulleys 33 and 35 for forward rotation and reverse rotation for preventing the V belt 31 itself from being loosened are respectively attached. Further, the fulcrum shafts of the forward tension pulley 33 and the reverse tension pulley 35 are formed on the same axis 36.

  Next, the bracket 27 that supports and fixes the power unit 17 in the bonnet 6 will be described. As shown in FIG. 11, the bracket 27 includes a main body portion 27 a that supports each unit of the power unit 17 and a base portion 27 b that connects the bracket 27 itself to the transmission case 29.

  As shown in FIG. 11C, the main body 27a of the bracket is formed in a substantially rectangular shape when viewed from the side, and two large and small holes 27c and 27d having different sizes are formed on the same plane of the main body 27a. Is formed. The traveling / planting drive motor 18 penetrates the output shaft 18a through the hole 27c and is fixed to the bracket 27, and the hydraulic pump drive motor 19 penetrates the output shaft 19a through the hole 27d. (See FIG. 6).

  As shown in FIG. 11 (d), the upper surface 27e of the main body portion 27a is formed in a substantially rectangular shape in plan view, and a hole 27f in a substantially rectangular shape in plan view is formed in the approximate center. Then, the traveling / planting drive motor control unit 20 is disposed horizontally on the upper surface 27e of the main body 27a so as to cover the hole 27f (see FIGS. 6 and 7).

  The base portion 27b of the bracket 27 is formed in a substantially rectangular shape in a side view as shown in FIG. 11C, and is formed in a substantially U-shape in a rear view as shown in FIG. Yes. The base portion 27b is formed with a plurality of holes for connecting and fixing the bracket 27 to the transmission case 29 (see FIG. 10), and a support portion 27g for connecting and fixing the bracket to the traveling machine body 5. Is formed.

  Further, as shown in FIG. 11A, the main body 27 a and the base 27 b are formed with a plurality of holes for supporting and fixing the units constituting the power unit 17 to the bracket 27.

  As described above, the traveling / planting drive motor 18 and the hydraulic pump drive motor 19 are disposed horizontally in the bonnet 6, and the external shape of the hydraulic pump drive motor 19 is larger than that of the hydraulic pump drive motor 19. Since the large traveling / planting drive motor 18 is arranged forward, a plurality of motors having different sizes of the traveling / planting drive motor 18 and the hydraulic pump drive motor 19 are efficiently stored in the bonnet 6. Can be arranged.

  Further, since the traveling / planting drive motor 18 and the hydraulic pump drive motor 19 are efficiently and compactly housed and arranged in the bonnet 6, the overall length of the bonnet 6 itself can be shortened. Thereby, the full length of the rice transplanter 1 itself can be shortened, and the operativity of the rice transplanter 1 can be improved, such as the improvement of turning property.

  In addition, since the hydraulic pump drive motor 19 whose outer shape of the motor is smaller than that of the travel / planting drive motor 18 is disposed in front of the travel / planting drive motor 18, a bonnet is provided for improving the visibility in front of the rice transplanter 1. The tip of 6 can be formed in a taper shape with a downward slope.

  Further, the traveling / planting drive motor control unit 20 is disposed horizontally above the traveling / planting drive motor, and the hydraulic pump drive motor control unit 21 is disposed vertically on the side of the hydraulic pump drive motor 19. Since it was set as the structure, the traveling / planting drive motor control unit 20 and the hydraulic pump drive motor control unit 21 can be efficiently arranged in the bonnet 6 and a space for arranging other units can be made. As a result, by using the same bonnet 6 in the rice transplanter 1 equipped with a conventional internal combustion engine, a power device 17 such as an electric motor and a control unit according to the present invention is arranged in the bonnet 6 instead of the internal combustion engine. be able to.

  Further, since the power unit 17 of the rice transplanter 1 is supported by the bracket 27 and disposed above the mission case 29, the traveling / planting drive motor 18 and the hydraulic pump drive motor 19 are disposed at a high position with respect to the rice field. be able to. Thus, for example, when the riding rice planting machine 1 is planting a paddy field, the traveling / planting drive motor 18 and the hydraulic pump drive motor 19 can be prevented from receiving water from the paddy field. The influence on the motor can be suppressed.

  Further, since the power unit 17 is supported by the bracket 27 and disposed above the transmission case 29 instead of in front of it, the power case 17 to the power unit 17 is more than the case where the power unit 17 is disposed in front of the transmission case 29. The overall length can be shortened. Thereby, the full length of the rice transplanter 1 itself can be shortened, and the operativity of the rice transplanter 1 can be improved, such as the improvement of turning property.

  Furthermore, since each unit of the power unit 17 disposed in the bonnet 6 is supported by one bracket 27 to form one unit, the mounting structure can be simplified. Thereby, for example, the travel / planting drive motor 18 and the hydraulic pump drive motor 19 can be easily replaced, and the maintainability of the rice transplanter 1 can be improved.

  In addition, tension pulleys 33 and 35 for applying tension to the V-belt 31 wound around the motor pulley 30 and the transmission pulley 32 attached to the tip of the output shaft 15a of the traveling / planting drive motor are for forward rotation. Since it is configured to attach two for reverse rotation, tension can be applied to the V-belt 31 without slackening the V-belt 31 even if the traveling / planting drive motor 18 is forward and reverse.

  Further, since the fulcrum shafts of the forward rotation tension pulley 33 and the reverse rotation tension pulley 35 are configured on the same axis 36, there is no need to provide fulcrum shafts for the two tension pulleys 33 and 35, and the structure is simple. Can be Thereby, manufacturing cost etc. can be held down.

  In the present embodiment, the output shafts (18a, 19a) of the traveling / planting drive motor 18 and the hydraulic pump drive motor 19 are arranged in a horizontal position in a state of protruding to the left with respect to the traveling direction of the rice transplanter 1. However, the present invention is not limited to this, and the rice transplanter 1 may be arranged in a horizontal position protruding rightward with respect to the traveling direction of the rice transplanter 1.

  Further, each of the output shafts (18a, 19a) of the traveling / planting drive motor 18 or the hydraulic pump drive motor 19 may be arranged horizontally so as to protrude in different directions left and right with respect to the traveling direction of the rice transplanter 1. Good.

  In the present embodiment, a four-class class rice transplanter has been described as an example. However, the present invention is not limited thereto, and the present invention may naturally be applied to other rice transplanters such as a ten-class class rice transplanter.

1 Passenger rice transplanter 2 Traveling wheel (front wheel)
3 Running wheel (rear wheel)
5 traveling machine body 6 bonnet 13 hydraulic cylinder 15 planting work machine 18 first electric motor (running / planting drive motor)
19 Second electric motor (hydraulic pump drive motor)
20 First control unit (running / planting drive motor control unit)
21 2nd control unit (hydraulic pump drive motor control unit)
24 Hydraulic pump 27 Support member (bracket)
29 Mission Case

Claims (4)

In a riding rice transplanter comprising a traveling machine body supported by a traveling wheel, a bonnet provided in front of the traveling machine body, and a planting work machine connected to the traveling machine body and lifted and lowered by a hydraulic cylinder,
A hydraulic pump for supplying hydraulic pressure to the hydraulic cylinder;
A first electric motor for driving the traveling wheel;
A second electric motor for driving the hydraulic pump,
The outer shape of the first electric motor is larger than that of the second electric motor,
The first electric motor and the second electric motor are disposed horizontally in a hood with their output shafts orthogonal to the traveling direction of the riding rice transplanter, and the second electric motor is With respect to the first electric motor, disposed in the forward direction of the riding rice transplanter,
A riding rice transplanter characterized by that. A first control unit for controlling the first electric motor;
A second control unit for controlling the second electric motor,
In the bonnet, the first control unit is disposed above the first electric motor, and the second control unit is disposed on the side of the second electric motor.
The riding rice transplanter according to claim 1. The first electric motor and the second electric motor are arranged above a transmission case having a planting speed change mechanism for shifting the planting work machine.
The riding rice transplanter according to claim 1 or 2. The first electric motor and the second electric motor are supported by one support member and unitized.
The riding rice transplanter according to any one of claims 1 to 3.

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