JP2009039004A - Rotary working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary working machine that alternatively drives an operation shaft and a power take-out shaft and arranges the power take-out shaft inside a transmission case by connecting and disconnecting a transmission shaft divided into two parts by a shifter with a power take-out member. <P>SOLUTION: The transmission shaft 9 in a support arm 3 is divided into two parts in the axial direction, the shifter 13 for connecting and disconnecting power is arranged between a first shaft 9A of a power introducing shaft 8 side and a second shaft 9B of a power transmission means 10 side, the shifter 13 is equipped with a power take-out member 14, and the power take-out shaft 15 for receiving power transmission from the power take-out member 14 is supported on the support arm 3 when the shifter 13 is engaged with only the first shaft 9A and the power to the power transmission means 10 side is in a disconnected state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rotary working machine that performs a scraping work, a tilling work, and the like.

  In this type of prior art, like the side drive type rotary described in Patent Document 1, support arms are provided on both the left and right sides of the gear case, the transmission case is provided on the outer end of one of the left and right support arms, and the side is provided on the other side. A frame is attached, a work shaft for attaching a ground work implement to a lower portion of the transmission case and a lower portion of the side frame is supported, a power intake shaft is supported by the gear case, and power is transmitted from the power intake shaft. A transmission shaft is arranged in the support arm, a power transmission means for transmitting power from the transmission shaft to the work shaft is arranged in the transmission case, and when the power extractor such as a pump or a motor is mounted, the power extractor is driven. However, the input shaft system of the power transmission means is provided with a clutch that drives the power transmission means when the power transmission means is turned off while the power take-off device is removed.

In the tillage device described in Patent Document 2, an intermediate case for driving the PTO shaft is provided on the support arm between the gear case and the transmission case, and the rotational force transmitted to the power transmission means for the work shaft is transmitted to the transmission shaft. Branching through a shift gear provided to the PTO shaft, power can be transmitted to the PTO shaft.
JP-A-5-184203 Japanese Utility Model Publication No. 2-137802

In Patent Document 1, the power of the transmission shaft cannot be transmitted to the power transmission means side in the transmission case with the power extractor mounted, and the power extractor may be arranged on the inner side of the transmission case. It has become difficult.
In Patent Document 2, when the power of the transmission shaft is transmitted to the PTO shaft, the power to the power transmission means side in the transmission case cannot be cut off.
It is an object of the present invention to provide an apparatus capable of solving such problems of the prior art.

  The present invention provides a rotary work in which the work shaft and the power take-off shaft can be driven alternatively by connecting and disconnecting the two-part transmission shaft with a shifter with a power take-out member, and the power take-out shaft can be arranged inside the power transmission case. The purpose is to provide a machine.

Specific means for solving the problems in the present invention are as follows.
First, support arms 3 are provided on both the left and right sides of the gear case 2, a transmission case 4 is attached to the outer ends of the left and right support arms 3, and a side frame 5 is attached to the other side. A work shaft 7 for attaching the ground work tool 6 to the lower part of the frame 5 is supported, a power intake shaft 8 is supported on the gear case 2, and a transmission shaft 9 to which power is transmitted from the power intake shaft 8 is supported. Power transmission means 10 is disposed in the arm 3 and transmits power from the transmission shaft 9 to the work shaft 7 in the transmission case 4.
A shifter 13 for connecting and disconnecting power between the first shaft 9A on the power intake shaft 8 side and the second shaft 9B on the power transmission means 10 side by dividing the transmission shaft 9 in the support arm 3 in the axial direction. When the shifter 13 is provided with a power take-off member 14 and the shifter 13 is engaged only with the first shaft 9A and the power to the power transmission means 10 is cut off, the power take-out member 14 This is because the support arm 3 supports the power take-out shaft 15 that receives the above-described transmission.

Secondly, the power take-out member 14 is formed by a flat gear, and a second flat gear 16 that meshes with the flat gear is provided on the power take-out shaft 15, and the support arm 3 corresponds to the division position of the transmission shaft 9. Is divided into left and right main / sub arm portions 3A and 3B, and left and right flat plates 17 and 18 are fixed to the opposing portions of the main and sub arm portions 3A and 3B, respectively, and the left and right flat plates 17 and 18 transmit the power take-off shaft 15 to each other. It is supporting in parallel with the shaft 9.
Third, the dividing position of the transmission shaft 9 and the support arm 3 is set to a position closer to the transmission case 4 than the gear case 2, and the shifter 13 and the left and right flat plates 17 and 18 and a plate member 19 connecting the left and right plates 17 and 18 are connected. An internal sealed power take-off case 20 that surrounds the power take-out member 14 and supports the power take-out shaft 15 is formed.

Fourth, a shift rod 22 is supported on one of the left and right flat plates 17 and 18, and a shift fork 23 that engages with the shifter 13 is provided on the shift rod 22, and a plate member 19 that connects the left and right flat plates 17 and 18 is provided. The guide plate 24 for setting the shift position of the shift rod 22 is provided.
Fifth, support arms 3 project from the left and right sides of the gear case 2, a transmission case 4 is attached to the outer ends of the left and right support arms 3, and a side frame 5 is attached to the other. A work shaft 7 for attaching the ground work tool 6 to the lower part of the frame 5 is supported, a power intake shaft 8 is supported on the gear case 2, and a transmission shaft 9 to which power is transmitted from the power intake shaft 8 is supported. Power transmission means 10 is disposed in the arm 3 and transmits power from the transmission shaft 9 to the work shaft 7 in the transmission case 4.
A power take-out case 20 is provided on the support arm 3, and a take-out transmission means 21 for supporting the power take-out shaft 15 and transmitting power from the power transmission shaft 9 to the power take-out shaft 15 is provided in the power take-out case 20, A shaft 15 is arranged in parallel with the transmission shaft 9, an input shaft 26 of a pump 25 is connected to the power take-off shaft 15, and a rotation stop means 27 for the pump 25 is provided between the pump 25 and the support arm 3. That is.

Sixth, the take-out transmission means 21 includes a first shaft 9A on the power intake shaft 8 side and a second shaft 9B on the power transmission means 10 side formed by dividing the transmission shaft 9 in the axial direction, A shifter 13 for power connection / disconnection provided between the first shaft 9A and the second shaft 9B, a flat gear 14 provided on the shifter 13, and a power take-off shaft 15 provided with the shifter 13 It has the 2nd flat gear 16 which meshes | engages with the said flat gear 14 when it meshes | engages only with the 1st axis | shaft 9A, and it is set as a power interruption state.
(Function)
In the power take-off case 20 provided on the left support arm 3, the transmission shaft 9 is divided into two in the axial direction. The first shaft 9A on the power take-in shaft 8 side and the second shaft 9B on the power transmission means 10 side The shifter 13 is slidably engaged in the axial direction, and a power take-out member 14 is provided.

When the shifter 13 is engaged with the first shaft 9A and the second shaft 9B, the power of the first shaft 9A is transmitted to the power transmission means 10, the take-out transmission means 21 enters a power-off state, and the shifter 13 Is engaged with only the first shaft 9A, the second shaft 9B is turned off, and the power of the first shaft 9A is transmitted from the power take-out member 14 of the take-out transmission means 21 to the power take-out shaft 15 and the work shaft 7 is stopped. In this state, the pump 25 connected to the power take-out shaft 15 is driven.
The pump 25 can be mounted on the rotary working machine 1 simply by connecting the input shaft 26 to the power take-off shaft 15 and providing the rotation stop means 27 between the pump 25 and the support arm 3. In addition, it can be compactly arranged on the gear case 2 side (inner side) with respect to the transmission case 4, and even if the pump 25 is mounted on the rotary work machine 1, alternative drive with the work shaft 7 is possible.

  According to the present invention, the transmission shaft in the support arm is divided into two in the axial direction and the shifter for connecting and disconnecting both shafts is provided, and the power take-off member provided on the shifter takes out the power when both shafts are turned off. By enabling the power transmission to the shaft, the drive shaft and the power take-out shaft can be driven alternatively, and the power take-out shaft can be arranged inside the transmission case.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6, reference numeral 1 denotes a scraping work machine exemplified as a rotary work machine, which is attached to a rear portion of a traveling vehicle such as a tractor via a three-point link mechanism 30.
The three-point link mechanism 30 includes a top link 31, a pair of left and right lower links 32, and a mounting frame 33. The lower link 32 can be moved up and down by a working device lifting / lowering hydraulic device mounted at the rear of the traveling vehicle. Are connected to the rear ends of the top link 31 and the left and right lower links 32 to removably connect the rotary working machine 1.

The rotary working machine 1 exemplifies a side drive type plowing work machine, which has substantially the same configuration as the side drive type rotary tiller, has a gear case 2 in the center in the left-right direction, and support arms on both left and right sides of the gear case 2 3, a transmission case 4 is attached to the outer end of one of the left and right support arms 3 (left side), and a side frame 5 is attached to the other to constitute a substantially gate-shaped machine casing 37 in plan view. A work shaft 7 to which the ground work tool 6 is attached is supported by the lower part of the transmission case 4 and the lower part of the side frame 5.
A crown-shaped top mast 34 is fixed to the gear case 2, and a top pin 34 </ b> A at the front upper end of the top mast 34 is supported on the upper portion of the mounting frame 33. A lower bracket 35 is fixed to the left and right support arms 3, and a lower pin 35 </ b> A at the front end of the lower bracket 35 is inserted and supported by an engaging portion at a lower portion of the mounting frame 33, and is prevented from coming off by a lock member 36.

A power intake shaft 8 is supported on the gear case 2 so as to protrude forward, and a bevel gear 39 driven by a bevel gear 38 of the power intake shaft 8 is engaged with the transmission bevel gear 39 in the gear case 2. It is attached to.
A transmission shaft 9 to which power is transmitted from the power intake shaft 8 is disposed in the left support arm 3 and can transmit power to the power transmission means 10 disposed in the transmission case 4. The power transmission means 10 can transmit power to the work shaft 7. The power transmission means 10 includes a drive sprocket 40 attached to the transmission shaft 9, a driven sprocket 41, a chain 42 wound around them, and the like.

The transmission shaft 9 in the support arm 3 is divided into two in the axial direction, and the first shaft 9A on the power intake shaft 8 side and the second shaft 9B on the power transmission means 10 side are driven by a shifter 13 having internal teeth. It can be switched between the connected state and the disconnected state.
The support arm 3 is also divided into left and right main / sub arm portions 3A, 3B corresponding to the position where the transmission shaft 9 is divided and the shifter 13, and a power take-out case 20 is provided at the opposing portion of the main / sub arm portions 3A, 3B. Is provided. The dividing position of the transmission shaft 9 and the support arm 3 is set outside the lower bracket 35 at a position closer to the transmission case 4 than the gear case 2.

The main arm portion 3A is formed of a pipe, a bearing member 45 is fixed to the outer end thereof, the right flat plate 18 is bolted to the flange portion of the bearing member 45, and the sub arm portion 3B is a cylindrical material. The end portion on the transmission case 4 side that is formed is bolted to the side surface of the transmission case 4, and the left flat plate 17 is fixed to the end portion on the gear case 2 side.
The left and right flat plates 17 and 18 are opposed to each other, and a front and rear portion and a bottom portion thereof are connected and fixed by a plate material 19 to constitute a power take-off case 20 with an internal seal. The power take-out case 20 is provided with a power take-out via a bearing. A shaft 15 is supported, and an extraction transmission means 21 is provided between the power extraction shaft 15 and the shifter 13.

The power take-off shaft 15 is arranged in parallel with the transmission shaft 9, and the take-out transmission means 21 is the shifter 13, the power take-out member 14 provided on the shifter 13 and formed by a flat gear, and the power take-out shaft A second spur gear 16 is provided on the shaft 15 and meshes with a power take-out member (first spur gear) 14. The power take-out member 14 may be integrally formed with the shifter 13 and placed in the shift gear.
The outer end of the first shaft 9A on the power take-in shaft 8 side of the transmission shaft 9 is supported by the main arm portion 3A via a bearing and the bearing member 45, and the second shaft 9B on the power transmission means 10 side is a pair of bearings. The shifter 13 is spline-fitted to the opposite ends of the first shaft 9A and the second shaft 9B, and is slid in the axial direction from a connected state where both the shafts are engaged. If it moves, it will change to the cutting state which meshes only with the 1st axis | shaft 9A.

The power takeout member 14 provided in the shifter 13 meshes with the second spur gear 16 when the shifter 13 is changed to the cut state, and transmits the power of the first shaft 9A to the power takeout shaft 15.
A shift rod 22 is supported in parallel with the transmission shaft 9 on one of the left and right flat plates 17 and 18 (right flat plate 18 in the embodiment), and a shift fork 23 and a handle 46 that engage with the shifter 13 are supported on the shift rod 22. Is provided.
A guide plate 24 for setting the shift position of the shift rod 22 is fixed to the power take-out case 20. An opening 47 is formed in the upper part of the power take-off case 20 for assembling gears and supplying lubricating oil, and the guide plate 24 is bolted to the flange portion of the opening 47 so as to serve as a lid. Reference numeral 51 denotes an oil filler opening formed in the guide plate 24.

  The guide plate 24 is formed with a U-shaped guide groove 24A for guiding the handle 46, and is provided with a spring for urgingly engaging the handle 46 at both end positions of the guide groove 24A. When engaged with the left engaging portion 24a of 24A (shown by a solid line in FIGS. 3 and 5), the shifter 13 also engages with the second shaft 9B to transmit power to the power transmission means 10 and engage with the right. When engaged with the portion 24b (shown in phantom lines in FIG. 3), the shifter 13 engages only with the first shaft 9A and power from the power take-out shaft 15 via the power take-out member 14 and the second spur gear 16. Make it possible to take out.

An input shaft 26 of a car wash pump 25 is connected to the power take-off shaft 15 via a coupling 48. The pump 25 is provided with a rotation stop means 27 between the support arm 3 and the pump 25. The anti-rotation means 27 is configured by connecting a mounting piece 49 protruding from the main arm portion 3 </ b> A of the support arm 3 and the pump 25 with a connecting rod 50, and also serves for mounting the pump 25.
The input shaft 26 of the pump 25 is set to have the same rotational speed as that of the power intake shaft 8, and the rotational speed of the pump 25 can be determined by the rotational speed of the power intake shaft 8. A spring pin 48A is used to connect the coupling 48 and the pin hole 26A of the input shaft 26 through which the spring pin 48A passes is formed long in the axial direction.

The connecting rod 50 is connected to the pump 25 by a bolt with a handle that can be turned by hand. The pump 25 can be rotated around the input shaft 26 when the connecting rod 50 is removed, and the draining operation of the pump can be easily performed. I can do it.
The pump 25 is compactly disposed along the front side of the support arm 3 between the power take-out case 20 and the lower bracket 35. When the rotary work machine 1 is attached to or detached from the mounting frame 33, the pump 25 is attached to perform ground work. It is arranged so as not to hinder the operation.
In FIG. 3, a hose holder 53 is attached to the main arm portion 3A via a stay 52 so that the hose connected to the pump 25 can be held in a wound state. A shaft cover 54 is provided to cover the outside of 48.

The machine frame 37 is mounted on the gear case 2 and the side frame 5 and covers the upper side of the ground work tool 6, and is supported on the rear end of the upper cover 56 so as to be swingable up and down. A leveling body 57 that also serves as a rear cover that covers the back of the tool 6, a front cover 58 that is mounted on the gear case 2 and the side frame 5 and covers the front of the ground work tool 6 on the left and right sides, and covers the rear of the left and right sides. A rear cover 59 is attached.
The leveling body 57 is pivotally supported at the rear end of the upper cover 56 via a horizontal shaft 60 and is pivotally supported at the rear end of the first leveling body 61 via a horizontal pivot shaft 62. It has the 2nd leveling body 63 connected, and the mud ground crushed by the ground work tool 6 of the work shaft 7 is suppressed and leveled.

Between the leveling body 57 and the top mast 34, there is provided a leveling body adjustment mechanism 65 for setting the leveling body 57 to a working posture and adjusting a leveling pressure by operating the operation lever 64.
FIG. 6 shows a state in which the stand body 66 is mounted on the rotary working machine 1. When the rotary work machine 1 is removed from the mounting frame 33 and stored or transported, the stand is attached to the attachment portion 67 formed on the left and right front covers 58. A body 66 is attached, and the ground work tool 6 is lifted from the ground by the left and right stand bodies 66 and can be conveyed by casters 68 provided on the left and right stand bodies 66.

In the present invention, the shape of each member and the positional relationship between the front, back, left, right, and top in the embodiment are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.
For example, if a working claw 7 such as a nail claw is attached to the work shaft 7 of the rotary working machine 1 and a rear cover is attached instead of the leveling body 57, a side drive type rotary tiller is obtained. Also, the power can be taken out from the first shaft 9A to the power take-out shaft 15, and the car wash pump 25 can be driven. Instead of the pump 25, a power transmission device for driving an air compressor or other accessory device may be provided.

Further, the power take-out member 14 is provided on the first shaft 9A so as to be relatively rotatable, and is always meshed with the second spur gear 16 so that the clutch body for coupling the first shaft 9A and the second shaft 9B is only the first shaft 9A. The clutch body may be slidably provided to the meshing position, and may be configured to engage with the first shaft 9A so that power can be transmitted when the clutch body is slid to the position where only the first shaft 9A is meshed.
Further, the power take-out member 14 is integrally molded or fixed to the shifter 13, a dog clutch portion is formed on the shifter 13, a clutch body having a dog clutch portion formed on the second shaft 9B is provided, and the shifter 13 is attached to the first shaft 9A. A state in which the power is transmitted to the work shaft 7 by sliding on the clutch body and a state in which the power extraction member 14 is engaged with the second flat gear 16 and the power is transmitted to the power extraction shaft 15 is selected. You may comprise so that it may switch uniformly.

  Further, a finger hook member may be provided at the outer end of the shift rod 22 so that the shift rod 22 can be pushed and pulled from the axial direction.

It is a partial cross section top view which shows embodiment of this invention. It is a side view at the time of work. It is a top view of the principal part at the time of a work-axis drive. It is a top view of the principal part at the time of a power take-off shaft drive. It is a rear view of a power take-out case. It is a partial cross section side view in the state where a stand body was equipped.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating work machine 2 Gear case 3 Support arm 4 Transmission case 5 Side frame 6 Ground work tool 7 Work shaft 8 Power take-in shaft 9 Drive shaft 10 Power transmission means 13 Shifter 14 Power take-out member 15 Power take-out shaft 16 2nd flat gear 17 Left flat plate 18 Right flat plate 19 Plate material 20 Power take-out case 21 Take-out transmission means 25 Pump 26 Input shaft 27 Anti-rotation means

Claims (6)

Support arms (3) project from the left and right sides of the gear case (2), a transmission case (4) is attached to the outer ends of the left and right support arms (3), and a side frame (5) is attached to the other. A work shaft (7) for mounting the ground work tool (6) is supported on a lower portion of the case (4) and a lower portion of the side frame (5), and a power intake shaft (8) is supported on the gear case (2), A power transmission shaft (9) to which power is transmitted from the power intake shaft (8) is disposed in the support arm (3), and the power transmission shaft (9) to the work shaft (7) in the power transmission case (4). A power transmission means (10) for transmitting power to
The transmission shaft (9) in the support arm (3) is divided into two in the axial direction, and the first shaft (9A) on the power intake shaft (8) side and the second shaft on the power transmission means (10) side ( 9B) is provided with a shifter (13) for connecting / disconnecting power to the shifter (13), a power take-out member (14) is provided on the shifter (13), and the shifter (13) is engaged with only the first shaft (9A) to provide power. When the power to the transmission means (10) side is cut off, a power take-off shaft (15) that receives power from the power take-out member (14) is supported by the support arm (3). Rotating work machine characterized.   The power take-out member (14) is formed by a flat gear, and a second flat gear (16) meshing with the flat gear is provided on the power take-off shaft (15), corresponding to the divided position of the transmission shaft (9). The support arm (3) is divided into left and right main / sub arm portions (3A, 3B), and left and right flat plates (17, 18) are fixed to the opposing portions of the main / sub arm portions (3A, 3B). The rotary working machine according to claim 1, wherein the power take-off shaft (15) is supported in parallel with the transmission shaft (9) by flat plates (17, 18).   The dividing position of the transmission shaft (9) and the support arm (3) is set to a position closer to the transmission case (4) than the gear case (2), and the left and right flat plates (17, 18) and the plate material (19 ) To form an internally sealed power extraction case (20) that surrounds the shifter (13) and the power extraction member (14) and supports the power extraction shaft (15). Item 3. The rotary working machine according to Item 2.   A shift rod (22) is supported on one of the left and right flat plates (17, 18), and a shift fork (23) is provided on the shift rod (22) to engage with the shifter (13). The rotary working machine according to claim 3, wherein a guide plate (24) for setting a shift position of the shift rod (22) is provided on a plate member (19) for connecting 18). Support arms (3) project from the left and right sides of the gear case (2), a transmission case (4) is attached to the outer ends of the left and right support arms (3), and a side frame (5) is attached to the other. A work shaft (7) for mounting the ground work tool (6) is supported on a lower portion of the case (4) and a lower portion of the side frame (5), and a power intake shaft (8) is supported on the gear case (2), A power transmission shaft (9) to which power is transmitted from the power intake shaft (8) is disposed in the support arm (3), and the power transmission shaft (9) to the work shaft (7) in the power transmission case (4). A power transmission means (10) for transmitting power to
A power take-out case (20) is provided on the support arm (3), and a power take-out shaft (15) is supported on the power take-out case (20) and power is transmitted from the transmission shaft (9) to the power take-out shaft (15). A take-out transmission means (21) for transmission is provided, and the power take-out shaft (15) is arranged in parallel with the drive shaft (9), and the input shaft (26) of the pump (25) is connected to the power take-out shaft (15). A rotary working machine characterized in that a rotation stop means (27) for the pump (25) is provided between the pump (25) and the support arm (3).   The take-out transmission means (21) includes a first shaft (9A) on the power intake shaft (8) side and a side on the power transmission means (10) side formed by dividing the transmission shaft (9) in the axial direction. A second shaft (9B), a power connection / disconnection shifter (13) provided between the first shaft (9A) and the second shaft (9B), and a spur gear provided on the shifter (13) (14) and a first gear which is provided on the power take-off shaft (15) and meshes with the spur gear (14) when the shifter (13) meshes only with the first shaft (9A) and the power is cut off. The rotary working machine according to claim 5, comprising two flat gears.

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