JP4324087B2 - Agricultural machine - Google Patents

Description

  The present invention relates to a foldable agricultural working machine including a foldable working unit that can be switched between a folded state and an unfolded state.

Conventionally, for example, when the left and right folding work units are in the unfolded state, the central leveling body in the center part and the leveling bodies in the left and right folding work units are in a free-cutting state (leveling work state) and a soiling work lock state (grounding state) ) And a three-fold foldable agricultural machine with an operating mechanism (see, for example, Patent Document 1).
JP-A-8-205612

  However, in the conventional folding farm machine, the leveling body of the folding work unit is not switched to the earthing work locked state by, for example, forgetting to operate the operation mechanism or by tractor hydraulic pressure without turning on the power. When the folding work unit is folded, for example, there is a problem that the leveling body of the folding work unit flutters during transportation and noise is generated.

  This invention is made | formed in view of such a point, and aims at providing the agricultural machine which can suppress the malfunction which the leveling body of a folding operation part flutters at the time of conveyance etc., and generate | occur | produces a noise.

  The agricultural work machine according to claim 1 is provided with a work machine main body part, and the work machine main body part so as to be pivotable in the vertical direction, and has a tillage body and a leveling body. A foldable working unit that is switched, and the leveling body is in a state of being locked in the earthing work that cannot be rotated by the engagement between the engagement receiving unit and the engagement rotating member, and the engagement receiving unit and the An agricultural work machine that is in a free-to-work state that can be rotated by releasing engagement with an engagement rotation member, and includes an additional engagement rotation member that is detachably engaged with the engagement receiving portion. When the folding working part is switched to the folded state with the engagement receiving part and the engaging turning member being disengaged, the folding working part is interlocked with the turning. The engagement receiving portion and the additional engagement rotating member are engaged with each other. When the folding working part is switched to the unfolded state with the engagement receiving part and the engagement turning member being disengaged, the state is interlocked with the turning of the folding working part. Then, the engagement between the engagement receiving portion and the additional engagement rotating member is released, and the release of the engagement brings the ground leveling body into a free cutting work state.

  And even if the folding working part is switched to the folded state with the engagement receiving part and the engaging turning member being disengaged, the folding working part is interlocked with the turning. Then, the engagement receiving part and the additional engagement rotating member are engaged, and the leveling body of the folding work part is put in the earthing work locked state by this engagement. It is possible to suppress a problem that the leveling body flutters and generates noise.

  According to a second aspect of the present invention, there is provided the agricultural machine according to the first aspect, further comprising a rotation driving unit that rotates the engaging rotation member based on an operation of the operation unit.

  And even if the rotation driving means breaks down, the leveling body of the folding working part can be put into the earthing work locked state by the engagement between the engagement receiving part and the additional engaging turning member, and the generation of noise can be appropriately performed. It is possible to suppress.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the engagement rotation member and the additional engagement rotation member are arranged close to each other.

  And it is possible to simplify a structure by arrange | positioning the engagement rotation member and the additional engagement rotation member in the state which adjoined mutually.

  According to the first aspect of the present invention, even when the folding work part is switched to the folded state while the engagement receiving part and the engagement rotating member are disengaged, the folding work part is folded. The engagement receiving portion and the additional engagement rotation member are engaged with each other in conjunction with the rotation of the tatami work portion, and the ground leveling body of the fold work portion is brought into the earthing work lock state by this engagement. It is possible to suppress the trouble that the leveling body of the folding work unit flutters at times or the like to generate noise.

  According to the invention which concerns on Claim 2, even if a rotation drive means breaks down, the leveling body of a folding operation | work part will be in the earthing | working work locked state by engagement with an engagement receiving part and an additional engagement rotation member. And the generation of noise can be appropriately suppressed.

  According to the third aspect of the present invention, it is possible to simplify the configuration by disposing the engagement rotation member and the additional engagement rotation member in a state of being close to each other.

  An embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.

  1 and 2, reference numeral 1 denotes a three-fold foldable agricultural working machine. This agricultural working machine 1 is a towing type scraper used by being connected to a tractor (not shown) as a traveling vehicle. Then, the farm work machine 1 selectively performs the scraping work and the earthing work while moving the field forward by the traveling of the tractor while being connected to the rear part of the tractor.

  The farm work machine 1 includes a work machine main body part (central work part) 2 that is connected to the three-point link part at the rear part of the tractor, and the work machine main body part 2 at substantially right and left ends at the left and right ends. A pair of left and right folding work units provided so as to be pivotable in the vertical direction about the support shaft (rotation center axis X) 3 and switched between a folded state and an unfolded state by rotation (rotation angle is, for example, 150 degrees). (Extension work part) 4 and drive means 5 such as a hydraulic cylinder or a motor for rotating each folding work part 4 are provided.

  The work machine main body 2 includes a machine frame 11 that is longitudinal in the left-right direction, a rotary tiller (not shown) that is rotatably provided on the machine frame 11 and that is driven to rotate by receiving power from the input shaft 10 side. A substantially plate-shaped leveling body 13 is provided at the rear portion of the machine frame 11 so as to be rotatable up and down via a rubber plate 12 which is an elastic plate.

  The cultivator has a cultivating shaft in the left-right direction and a plurality of cultivating claws attached radially to the cultivating shaft.

  The leveling body 13 includes a first leveling plate (center leveling plate) 14 whose upper end is attached to the rubber plate 12, and a second leveling whose upper end is rotatably attached to the lower end of the first leveling plate 14. And a main plate (center rake) 15.

  The pair of left and right folding work units 4 are bilaterally symmetric, both of which are provided with a machine frame 21 that is long in the left-right direction and a central work when the folding work unit 4 is unfolded so as to be rotatable. A rotary-type tillage body (not shown) that receives power from the tillage shaft side of the machine body 2 and rotates and is provided at the rear of the machine frame 21 via a rubber plate 22 that is an elastic plate so as to be rotatable up and down. And a substantially plate-shaped leveling body 23.

  The cultivator has a cultivating shaft in the left-right direction and a plurality of cultivating claws attached radially to the cultivating shaft.

  The leveling body 23 includes a first leveling plate (side flat plate) 24 whose upper end is attached to the rubber plate 22, and a second leveling whose upper end is rotatably attached to the lower end of the first leveling plate 24. And a main plate (side rake) 25. When the folding work unit 4 is in the unfolded state, the first and second outer surfaces of the first and second leveling plates 14 and 15 of the leveling body 13 of the work machine body 2 and the first and second leveling bodies 23 of the folding work unit 4 are shown. The inner ends of the second leveling plates 24 and 25 are detachably fitted so that the leveling bodies 13 and 23 are integrated. When the folding work unit 4 is in the folded state, the first and second leveling plates 14 , 15 and the inner ends of the first and second leveling plates 24, 25 are released, and the leveling bodies 13, 23 are separated.

  The leveling body 13 of the work implement main body 2 and the leveling body 23 of the folding work unit 4 are engagement pins that are engagement receiving parts based on the operation of the rotation driving means 31 when the folding work unit 4 is in the unfolded state. Hook engagement between the first engagement pin 32 as the engagement pin and the recess 34 of the engagement rotation member 33 and the engagement between the second engagement pin 36 and the engagement rotation member 33 as the engagement pin as the engagement receiving portion. Due to the abutting engagement with the contact surface portion 37, the earthing work lock state in which the vertical rotation with respect to the machine frames 11 and 21 is impossible is achieved (see FIG. 6).

  Further, the leveling body 13 of the work machine main body 2 and the leveling body 23 of the folding work unit 4 are engaged with the first engagement pins 32 based on the operation of the rotation driving means 31 when the folding work unit 4 is in the unfolded state. By releasing the hooking engagement of the rotating member 33 with the recess 34 and releasing the contact engagement between the second engaging pin 36 and the contact surface portion 37 of the engaging rotating member 33, In this way, the cutting work is free to turn up and down (see FIG. 7).

  Here, the folding work unit 4 has a connecting body 41 whose upper end is rotatably connected to the machine frame 21 and whose lower end is rotatably connected to the second leveling plate 25 of the leveling body 23. ing. The connecting body 41 includes, for example, a first rotating arm (rake arm) 43 and a second rotating arm (connected U-shaped frame) 44. A first engaging pin 32 in the left-right direction is attached to the first rotating arm 43, and both end portions of the first engaging pin 32 protrude from the side surface of the first rotating arm 43. The second engagement pin 36 is attached to a protruding frame portion 42 that protrudes upward from the first leveling plate 24.

  In addition, a pair of left and right substantially plate-like engagements that detachably engage with the first engagement pin 32 and the second engagement pin 36 are attached to the rotating member support portion 45 of the machine casing 21 of the folding working portion 4. A joint rotation member (earth-drawing cam) 33 is attached to be rotatable via a support shaft 46 in the left-right direction. Then, the rotation drive means 31 that rotates the engagement rotation member 33 based on the operation of an operation means (not shown) such as a remote controller has a motor unit 47 with a built-in motor or the like. 47 and the engaging rotation member 33 are connected by a link mechanism 48 which is an operating means. The link mechanism 48 includes, for example, a rotation link 49, a rod 50, a push spring 51, and the like.

  Further, a pair of left and right substantially plate-like members that are detachably engaged with the first engagement pin 32 and the second engagement pin 36 are added to the rotating member support portion 45 of the machine casing 21 of the folding working portion 4. An engagement rotation member (lock cam) 53 is rotatably attached to the engagement rotation member 33 via a support shaft 46 in a state of being close to the engagement rotation member 33. The machine casing 21 of the folding working unit 4 and the additional engagement rotating member 53 are connected by an interlocking link mechanism 54 that is interlocking means.

  The interlocking link mechanism 54 includes a first rotation link 56 that can rotate about a shaft 55, one end portion connected to the first rotation link 56 via a shaft 57, and the other end portion connected to a machine. A second rotation link 59 is rotatably connected to the frame 21 via a shaft 58.

  The interlocking link mechanism 54 has a first rod 61 having one end connected to the second rotating link 59, and the other end of the first rod 61 is connected to the second rod via the connecting rotating link 62. The other end of the second rod 63 is connected to the additional engagement rotating member 53, and a pressing spring 64 is mounted on the outer peripheral side of the second rod 63.

  Then, the hook engagement between the first engagement pin 32 and the recess 34 of the engagement rotation member 33 and the contact engagement between the second engagement pin 36 and the contact surface portion 37 of the engagement rotation member 33 are released. When the folding working unit 4 is switched to the folded state in the folded state, the folding working unit 4 is folded during the rotation of the folding working unit 4 (the stage before the center of gravity of the folding working unit 4 exceeds the fulcrum). In conjunction with the rotation of the working unit 4, the first engagement pin 32 and the recess 74 of the additional engagement rotation member 53 are hooked and engaged, and the second engagement pin 36 and the additional engagement rotation member 53 are in contact with each other. The contact surface portion 77 abuts and engages, and the ground leveling body 23 of the folding work unit 4 is brought into the earthing work lock state in which the vertical movement with respect to the machine frame 21 of the folding work unit 4 is impossible by this engagement ( (See FIG. 8). That is, as shown in FIGS. 3 to 5, when the folding work unit 4 is rotated around the support shaft 3 with respect to the work machine body 2, the folding work unit 4 is interlocked with the rotation. The interlocking link mechanism 54 operates, and as a result, the first engagement pin 32 and the recess 74 of the additional engagement rotation member 53 are hooked and engaged, and the second engagement pin 36 and the additional engagement rotation member 53 are engaged. The contact surface portion 77 contacts and engages.

  Further, the hook engagement between the first engagement pin 32 and the recess 34 of the engagement rotation member 33 and the contact engagement between the second engagement pin 36 and the contact surface portion 37 of the engagement rotation member 33 are released. When the folding working unit 4 is switched to the unfolded state in the folded state, the folding work unit 4 is being rotated (the stage after the center of gravity of the folding working unit 4 exceeds the fulcrum). In conjunction with the rotation of the portion 4, the hooking engagement between the first engagement pin 32 and the recess 74 of the additional engagement rotation member 53 and the contact surface portion of the second engagement pin 36 and the additional engagement rotation member 53. The abutment engagement with 77 is released, and by releasing this engagement, the ground leveling body 23 of the folding work unit 4 can rotate up and down with respect to the machine frame 21 of the folding work unit 4, Become.

  The first engagement pin 32 and the recess 34 of the engagement rotation member 33 are hooked and engaged, and the second engagement pin 36 and the contact surface portion 37 of the engagement rotation member 33 are in contact engagement. In this state, when the folding work unit 4 is switched to the folded state, the leveling body 23 of the folding work unit 4 is in a double-locked state by the engagement turning member 33 and the additional engagement turning member 53. (See FIG. 9). That is, when the folding working part 4 is switched to the folded state with the engaging pins 32 and 36 and the engaging turning member 33 engaged, the folding working part 4 is interlocked with the turning. The engaging pins 32 and 36 and the additional engaging rotating member 53 are engaged, and the leveling body 23 is obtained by the engagement by the additional engaging rotating member 53 and the engagement by the engaging rotating member 33 made in advance. Becomes a double earthing work lock state.

  Next, the operation and the like of the one embodiment will be described.

  When the left and right folding work sections 4 are deployed and the scraping work is performed, when the driver riding on the tractor operates the operation means, the rotation drive means 31 is actuated and the engagement rotation member 33 is pivoted. Rotating in the disengagement direction centering on 46, the engagement engagement member 33 releases the hook engagement between the first engagement pin 32 and the recess 34 and the second engagement pin 36. As a result, the leveling body 13 of the work machine body 2 and the leveling body 23 of the folding work unit 4 are released from the machine frame 11 and the folding work of the work machine body 2. It is in a state of free machining that can be rotated up and down with respect to the machine casing 21 of the unit 4. Then, when the entire farm work machine 1 is moved by the traveling of the tractor, the plowing work is performed by the cultivating body and the leveling bodies 13 and 23. Note that when the folding working unit 4 is in the unfolded state, the engagement by the additional engagement rotating member 53 is released.

  Further, when performing the earthing work with the folding work unit 4 in the unfolded state at the end of the field, etc., when the driver on the tractor operates the operation means, the rotation drive means 31 is activated and engaged. The rotation member 33 rotates in the engagement direction about the support shaft 46, and the rotation of the engagement rotation member 33 causes the first engagement pin 32 and the recess 34 to be hooked and second engagement. As a result, the leveling body 13 of the work machine body 2 and the leveling body 23 of the folding work unit 4 are brought into contact with the machine frame 11 and the folding of the work machine body 2. The earthing work lock state in which the vertical movement with respect to the machine frame 21 of the working unit 4 is impossible is achieved. Then, when the entire farm work machine 1 is moved by the traveling of the tractor, the soil leveling bodies 13 and 23 perform the earthing work.

  When the left and right folding work units 4 are switched from the unfolded state to the folded state after the work is finished, the ground leveling body 23 of the folding work unit 4 is locked in the earthing work locked state by the engagement by the engagement rotating member 33. After that, the folding working unit 4 is rotated by the driving means 5.

  Here, for example, troubles such as disconnection occurred in the operation means and the rotation drive means 31, so that the leveling body 23 of the folding work unit 4 could not be put into the earthing work locked state in the unfolded state of the folding work part 4. However, during the rotation of the folding work unit 4, the interlocking link mechanism 54 is operated according to the rotation of the folding work unit 4, and the additional engagement turning member 53 is engaged around the support shaft 46. The first engagement pin 32 and the concave portion 74 are hooked and engaged with each other, and the second engagement pin 36 and the contact surface portion 77 are in contact with each other. In this case, the leveling body 23 of the folding work unit 4 is put into the earthing work lock state by this engagement. Further, for example, even if the folding work unit 4 is folded by tractor hydraulic pressure or the like without turning on the power, similarly, the interlocking link mechanism 54 is operated in accordance with the rotation of the folding work unit 4 to perform additional engagement rotation. The member 53 rotates about the support shaft 46 in the engagement direction, and the rotation of the additional engagement rotation member 53 causes the first engagement pin 32 and the recess 74 to be hooked and the second engagement pin. 36 and the contact surface portion 77 are brought into contact with each other, and the ground leveling body 23 of the folding working portion 4 is brought into the earthing work locked state by this engagement.

  As described above, according to the agricultural machine 1, the engagement pins 32 and 36 are engaged with the engagement pins 32 and 36 by failure of the operation means or the rotation drive means 31, forgetting to operate the operation means, or by tractor hydraulic pressure without turning on the power. Even when the folding working unit 4 is switched to the folded state while the engagement with the moving member 33 is released, the folding working unit 4 can rotate around the support shaft 3. The engagement pins 32 and 36 and the additional engagement rotation member 53 are engaged with each other, and the first and second leveling plates 24 and 25 of the leveling body 23 of the folding working unit 4 are earthed by this engagement. Since the work lock state is established, the first and second ground leveling plates 24 and 25 of the leveling body 23 of the folding work unit 4 are used, for example, when transporting the farm work machine 1 to a warehouse or the like, or when working only with the work machine body 2. It is possible to suppress the problem of fluttering and generating noise.

  The configuration is not limited to the configuration in which the engagement rotation member 33 is electrically rotated by the rotation drive means 31 having the motor unit 47 that outputs the drive force, and the engagement rotation member 33 is manually operated by operating the operation lever. The structure etc. to rotate may be sufficient.

It is a perspective view of one embodiment concerning an agricultural machine of the present invention. It is a partial rear view of an agricultural working machine same as the above. It is operation | movement explanatory drawing of the additional engagement rotation member and interlocking | linkage link mechanism of an agricultural work machine same as the above. It is operation | movement explanatory drawing following FIG. FIG. 5 is an operation explanatory diagram following FIG. 4. It is a side view which shows the earthing | working work locked state which the engagement pin and the engagement rotation member engaged when the folding operation part was unfolded. It is a side view which shows the cutting work free state by which engagement with the engagement pin and the engagement rotation member was cancelled | released at the time of the expansion | deployment state of a folding operation part. It is a side view which shows the earthing | working work locked state which the engagement pin and the additional engagement rotation member engaged at the time of the folding state of a folding work part. It is a side view which shows the double lock state which the engagement pin, the engagement rotation member, and the additional engagement rotation member engaged when the folding operation part is in the folded state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Farm machine 2 Work machine main-body part 4 Folding work part
23 Leveling body
31 Rotation drive means
32 The first engagement pin which is the engagement receiving part
33 Engagement rotation member
36 Second engagement pin as an engagement receiving portion
53 Additional engaging pivot member

Claims (3)

A work machine body,
The working machine main body is provided so as to be pivotable in the vertical direction, has a tillage body and a leveling body, and includes a folding working part that can be switched between a folded state and an unfolded state by turning,
The leveling body is brought into a soiled work lock state that cannot be rotated due to the engagement between the engagement receiving portion and the engagement rotating member, and the engagement receiving portion and the engagement rotating member are engaged. A farming machine that is free to turn and can be turned by release,
An additional engagement rotating member that is detachably engaged with the engagement receiving portion;
When the folding working part is switched to the folded state with the engagement receiving part and the engaging turning member being disengaged, the folding working part is interlocked with the turning of the folding working part. The engagement receiving portion and the additional engagement rotation member are engaged, and the leveling body is in a soiling work lock state by this engagement,
When the folding working part is switched to the unfolded state with the engagement receiving part and the engaging turning member being disengaged, the folding working part is interlocked with the turning of the folding working part. Agricultural working machine, wherein the engagement receiving portion and the additional engagement rotating member are disengaged, and the leveling body is brought into a free-cutting work free state by releasing the engagement. The agricultural working machine according to claim 1, further comprising a rotation driving unit that rotates the engagement rotation member based on an operation of the operation unit. The farm work machine according to claim 1 or 2, wherein the engagement rotation member and the additional engagement rotation member are disposed close to each other.

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