JP2015070817A - Rotary tilling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary tilling device capable of easily checking an oil amount of a bearing part on a support frame side of a tillage rotor, performing oil supply work easily, and securing the lubrication oil amount of the bearing part sufficiently.SOLUTION: A rotary tilling device includes a first oil storage part 74 which is a lubricating oil storage part for a bearing part 7 in the lower end part of a support frame 3, and a second oil storage part 75 separately from the first oil storage part 74. The first oil storage part 74 and the second oil storage part 75 are communicated with each other by a pipe material 76. The second oil storage part 75 is provided with an oil supply port 751, in which the oil amount can be checked.

Description

  The present invention relates to a rotary tiller that is a farm working machine that is used by being mounted on a tractor and that rotates and cultivates a tilling rotor provided with a plurality of tilling claws. Specifically, the present invention relates to lubrication of the bearing portion of the rotor portion.

  Conventionally, a tilling rotor provided with a plurality of tilling claws in the left and right direction of a rotary tilling device has one end held by a bearing portion of a transmission case in which a sprocket or a chain for driving the tilling rotor is accommodated, and the other end. Japanese Patent No. 4268565 is known as an agricultural machine that can easily check the oil state by providing a transparent member in the oil storage part for oil supply of the bearing part of the rotary tillage device held by the bearing part of the support frame. Yes.

Japanese Patent No. 4268656

  The bearing portion of the tilling rotor of the conventional rotary tiller is sufficiently lubricated by the lubricating oil in the transmission case on the transmission case side where power is transmitted, but the other support frame side takes up the space of the bearing portion. When the size is increased, a portion protruding outward from the tillage portion is increased, and the remaining tillage is left by the size of the protrusion portion, so that the space cannot be increased and the storage space for the lubricating oil is not sufficient. Also, since the bearing is close to the tilling rotor, collisions and contact with the outside frequently occur, so it must be configured with consideration for rigidity and wear resistance. Problems that are difficult to perform and inspection and refueling cannot be performed without removing the guards, etc., so the inspection refueling time is often overlooked, which may cause failure.

  In the case of the agricultural machine of Patent Document 1, when the guard is removed from the oil reservoir, the transparent member is exposed and the oil can be inspected, but the structure of the troublesomeness of removing the guard and the amount of stored oil can be sufficiently secured. The problem has not been solved.

  Accordingly, an object of the present invention is to provide a rotary tiller capable of easily confirming the amount of oil in the bearing portion on the support frame side of the tilling rotor, facilitating oiling work, and sufficiently securing the amount of lubricating oil in the bearing portion. The purpose is to provide.

  In order to solve the above-mentioned problem, in a rotary tiller device in which a tilling rotor having a tilling claw mounted radially at a predetermined interval is provided between a lower end portion of a transmission case and a lower end portion of a support frame, the lower end of the support frame A first oil reservoir that is an oil reservoir for lubrication of the bearing portion of the part and a second oil reservoir separately from the first oil reservoir, and the first oil reservoir and the second oil reservoir are pipes A rotary tiller is proposed in which the second oil reservoir is provided with an oil supply port and the amount of oil can be confirmed.

  In addition, the rotary oil tiller described in the 0007 column is proposed, wherein the second oil reservoir is formed of a transparent or translucent member whose oil amount can be confirmed from the outside.

  Further, the rotary tiller described in the 0007 column or the 0008 column is proposed, wherein the second oil storage portion is provided inside the support frame above the lubricating oil storage portion of the bearing portion.

  According to this invention, in addition to the amount of oil in the first oil reservoir, the second oil reservoir is provided separately from the first oil reservoir and the first oil reservoir and communicated with the pipe material. 2 The oil in the oil reservoir can function as the lubricating oil, and a sufficient amount of lubricating oil can be secured without changing the space in the first oil reservoir. Moreover, since it is possible to provide a 2nd oil storage part in the place without the restriction | limiting of the space apart from the 1st oil storage part, it is set as the structure which can fully ensure an oil supply port and can supply oil easily. be able to.

  Further, when the second oil reservoir is made of a transparent or translucent member whose oil amount can be confirmed from the outside, the oil amount can be easily inspected without removing the guard or the like.

  Furthermore, since the second oil reservoir is provided above the lubricating oil reservoir of the bearing portion, the oil is supplied in a natural drop, and even when the internal pressure of the bearing portion increases due to heat or the like, the second oil reservoir is supplied. The oil is backflowed to the storage portion side, so that the internal pressure does not increase and oil leakage or the like is prevented. Further, since the second oil reservoir is located inside the support frame, it is possible to avoid collision and contact with the outside, so that it is not necessary to configure it with a rigid one, and it can be produced at low cost.

It is a perspective view from the right rear of the rotary plowing apparatus of the Example of this invention. It is a right view of the rotary tiller of the Example of this invention. It is sectional drawing of the bearing part by the side of the support frame of the tilling rotor of the Example of this invention. It is a longitudinal cross-sectional view of the principal part of the tilling rotor of the Example of this invention. It is a right view of the rotary plowing apparatus of another Example of this invention.

  An embodiment will be described based on an example shown in the drawings. 1 is an overall perspective view from the right rear of a rotary tiller according to an embodiment of the present invention, FIG. 2 is a right side view of the rotary tiller according to an embodiment of the present invention, and FIG. 3 is a tilling rotor according to an embodiment of the present invention. FIG. 4 is a longitudinal sectional view of a main part of a tilling rotor according to an embodiment of the present invention, and FIG. 5 is a right side view of a rotary tilling device according to another embodiment of the present invention. A three-point link mechanism that is a lifting link is provided at the rear of a tractor (not shown) that is a traveling work vehicle, and is connected to a mounting portion 8 at the front part of the rotary tiller, so that the rotary tiller A can be raised and lowered. And is driven by the power output from the tractor side.

  The mounting portion 8 is provided at the front center portion of the rotary tiller A, and includes a top link pin 81 at the upper center and a pair of lower link pins 80 positioned at the lower left and right thereof, and a three-point link on the tractor side. A top link and a lower link of a mechanism (not shown) are connected to the tractor.

  An input case 1 is provided at the center of the front mounting portion 8, and an input shaft 10 protrudes forward. The input shaft 10 is connected to the output shaft of the tractor through a universal joint or the like, and receives power from the tractor.

  A pipe frame 2 configured by a round pipe projecting integrally from the input case 1 to the left and right sides is provided, and downward from the projecting end of the pipe frame 2 on one of the left and right sides (left side in FIG. 1). A frame portion is configured by the vertically extending transmission case 5 and the vertically supporting frame 3 extending downward from the protruding end portion of the pipe frame 2 on the other side of the left and right sides. The rotor shaft 60 is rotatably supported between the lower end of the transmission case 5 and the lower end of the support frame 3.

  A large number of tilling claws 61 are attached to the rotor shaft 60 at regular intervals in the radial direction to constitute the tilling rotor 6. The upper part of the tilling rotor 6 is covered with a rotor cover 62, and the rear part is located at the rear end part of the rotor cover 62, and the leveling plate 4 is connected to the front end so as to be rotatable in the vertical direction. The scattering of the cultivated soil is received and the leveling is performed by the rear portion of the leveling plate 4.

  The power input from the input shaft 10 of the input case 1 is decelerated by the gear built in the input case 1, and the output passes through the pipe frame 2 (left side in FIG. 1) protruding from the left and right sides. It is transmitted into the transmission case 5 by the shaft 11. An output sprocket 50 is fixed to the end of the output shaft 11 in the transmission case 5, and a rotor shaft sprocket 52 is fixed to the end of the rotor shaft 60 supported by the lower end of the transmission case 5. Power is transmitted by the roller chain 51 thus made, and the rotor shaft 60 is rotationally driven.

  A support portion of the rotor shaft 60 of the transmission case 5 is rotatably supported by a bearing and is lubricated by lubricating oil stored in the transmission case 5. An oil supply port (not shown) is provided in the upper part of the transmission case 5, and the roller chain 51 and the bearing are lubricated by the supplied lubricating oil.

  The support portion on the support frame 3 side of the rotor shaft 60 is rotatable by a bearing 70 held by the support frame 3 via a bearing retainer 77 attached to the support frame 3 with bolts and nuts as shown in FIG. A seal member 71 is provided on the rotor shaft 60 side of the bearing 70, and a dish-like cap 72 is attached to the outside of the bearing 70, and the bearing 70 is lubricated between the seal member 71 and the cap 72. A first oil reservoir 74 is formed by providing a sealed space so that the oil can be stored. A guard 73 that protects the bearing portion 7 from collision and contact with the outside during tillage work is detachably attached to the outer side of the cap 72 so as to cover the cap 72 portion with bolts, nuts, and the like.

  A connection pipe 77 provided in communication with the first oil reservoir 74 is attached to the upper portion of the bearing retainer 77 so as to protrude upward from the guard 73. On the other hand, a second oil reservoir 75 is attached inside the upper portion of the support frame 3, and the second oil reservoir 75 and the connection pipe 77 are connected to each other by a pipe material 76. An upper portion of the support frame 3 is provided with a hole penetrating the outer side and the inner side, and a pipe member 76 is inserted through which the first oil reservoir 74 on the outer side of the support frame 3 and the second oil reservoir 75 on the inner side are connected. Is done. A portion of the pipe member 76 located outside the support frame 3 is protected from contact or contact with the outside by a guard member 30 provided on the support frame 3.

  The second oil reservoir 75 includes a tank 750 that can store lubricating oil and an oil supply port 751 that is provided with a lid that can open and close a release portion at an upper portion thereof. It is held and attached inside the support frame 3. The bottom of the tank 750 projects downward and has a pipe shape communicating with the inside, and the pipe material 76 is inserted and connected.

  The lubricating oil injected into the tank 750 naturally falls in the pipe member 76 that communicates the tank 750 and the first oil reservoir 74 and reaches the first oil reservoir 74 below. And if the inside of the 1st oil storage part 74 and the pipe material 76 is filled, it will be in the state by which lubricating oil is stored in the tank 750 of the 2nd oil storage part 75. FIG. For this reason, if the first oil storage part 74 is not filled with lubricating oil, the lubricating oil is not stored in the tank 750 of the second oil storage part 75. Therefore, by checking the amount of oil in the tank 750, the bearing part 7 (first oil reservoir 74) can be confirmed whether or not there is an oil amount. When injecting oil, a plug for venting air is provided on the first oil reservoir 74 side, and the infusion can be smoothly performed by injecting the air while venting.

  The inspection can be confirmed visually from the oil supply port 751, but a level gauge or the like may be used. When a tank 750 formed of a transparent or translucent member is used, the presence or absence of oil in the bearing portion 7 (first oil storage portion 74) can be easily confirmed by visual observation from the outside. The pipe material 76 may be any oil-resistant pipe shape such as iron, non-ferrous, resin material, rubber material.

  In addition, since the second oil reservoir 75 can be installed at a location away from the bearing portion 7 (first oil reservoir 74), there is no restriction on the shape and size, and a sufficient amount of lubricating oil can be secured. Can be provided. In the present embodiment, the second oil reservoir 75 is attached to the support frame 3, but the attachment location is not limited to this, and if it is provided at a position in the inner direction of the support frame 3, a collision or contact with the outside will occur. Is easier to avoid. Further, even if the internal pressure increases or decreases due to the temperature change of the bearing portion 7, it is possible to maintain a constant pressure by providing a vent hole or the like on the second oil storage portion 75 side, and the seal portion due to the increase in the internal pressure of the bearing portion 7. Oil leakage etc. can be prevented.

  FIG. 5 shows a side view of a rotary tiller according to another embodiment of the present invention. The first oil storage portion 74 of the bearing portion 7 of the rotor shaft 60 and the second oil provided on the side surface of the support frame 3 thereabove. The reservoir 75a is connected and communicated with a pipe member 76a, and an oil supply port 751a for oil supply and inspection is provided above the second oil reservoir 75a. The inspection of the oil can be visually confirmed from the oil supply port 751a, but can also be performed by a level gauge or the like. As described above, by providing the second oil storage portion that is connected and connected by the pipe material, the second oil storage portion can be installed in a place that is not subject to space restrictions. This makes it possible to provide a rotary plowing device with a good handleability and a configuration capable of ensuring a sufficient amount of lubricating oil.

  Next, in order to perform the tilling work using the rotary tiller of the present invention, the three-point link mechanism of the tractor which is a traveling machine is connected to the three-point link mechanism of the mounting portion 8 by the lower link pin 80 and the top link pin 81. The mechanism can be moved up and down by the mechanism. Further, the input shaft 10 is connected to the output shaft of the tractor and a universal joint, etc., so that power can be input.

  In the tillage field, when the tiller rotor 6 is rotated to lower the three-point link mechanism by operating the tractor, the soil is tilled by the tillage claws 61 of the tiller rotor 6. When the tractor is run in this state, the field can be cultivated sequentially. Moreover, the leveling board 4 is located in the rear part of the tilling rotor 6, and work is performed while leveling the cultivated soil surface layer.

  During work, a predetermined amount of lubricating oil is stored in the input case 1 and the transmission case 5, and the gears, sprockets, roller chains, and the like provided therein are lubricated to operate smoothly. In the case of the input case 1, the oil amount can be confirmed with a level gauge or the like that also serves as an oil filler provided at the top. In the case of the transmission case 5, refueling is performed from a fuel plug provided at the upper part, and the oil amount is confirmed by removing a confirmation bolt provided at a lower level position.

  On the other hand, the bearing portion 7 side of the support frame 3 provided opposite to the transmission case 5 and supporting one end of the tilling rotor 6 is connected and communicated by the first oil storage portion 74 of the bearing portion 7 and the pipe material 76. The second oil reservoir 75 is lubricated and smoothly driven. Since the second oil reservoir 75 is connected by the pipe member 76, the arrangement location is not limited. In this example, the second oil reservoir 75 is visually observed from the tractor driver seat at the inner position of the support frame 3 that supports the bearing 7 side. It is installed in a place where confirmation is possible. For this reason, it is possible to check without requiring tools or the like even during work, and oil can be easily replenished.

  The present invention can be applied to a rotary tiller that is mounted behind a traveling machine such as a tractor and performs a tilling operation.

DESCRIPTION OF SYMBOLS 1 Input case 10 Input shaft 11 Output shaft 2 Pipe frame 3 Support frame 4 Ground leveling plate 5 Transmission case 50 Output sprocket 51 Roller chain 52 Rotor shaft sprocket 6 Cultivation rotor 60 Rotor shaft 61 Claw claw 62 Rotor cover 7 Bearing part 70 Bearing 71 Seal Material 72 Cap 73 Guard 74 First oil storage portion 75 Second oil storage portion 750 Tank 751 Oil supply port 76 Pipe material 8 Mounting portion 80 Lower link pin 81 Top link pin

Claims (3)

In the rotary cultivating apparatus that pivotally supports the cultivating rotor with the cultivating claws radially mounted at a predetermined interval between the lower end of the transmission case and the lower end of the support frame,
A first oil reservoir that is a lubricating oil reservoir in the bearing portion at the lower end of the support frame, and a second oil reservoir separately from the first oil reservoir, and the first oil reservoir and the second oil A rotary tiller characterized in that the reservoir is communicated with a pipe material, the second oil reservoir is provided with an oil supply port, and the amount of oil can be confirmed.   The rotary tiller according to claim 1, wherein the second oil reservoir is made of a transparent or translucent member whose oil amount can be confirmed from the outside.   The rotary tiller according to claim 1 or 2, wherein the second oil reservoir is provided inside the support frame above the lubricating oil reservoir of the bearing portion.

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