JPH073876Y2 - Central combine lubricator - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a centralized oil supply device adaptable to a combine,
More specifically, the present invention relates to a combined centralized oil supply device in which an oil supply pump for centralized oil supply can be installed using a lower transmission device provided in a pretreatment device.

[Prior art]

As shown in FIG. 12 as a conventional example, the combine C has a threshing device 3 mounted on a machine stand having a pair of left and right crawlers, and a pretreatment device 1 is arranged in front of the threshing device 3. There is. This pretreatment device 1 has a carding portion 4, a scraping mechanism 5 for scraping a grain culm, and a cutting blade 6 in order to raise a napped grain culm.
Mowing unit 7, which consists of this, and the threshing device 3
It is composed of a grain culm transporting section 10 including a stocker side transport mechanism 8 and a tip side transport mechanism 9 for transporting to the.

Further, on the front surface of the handling barrel that rotates around the handling barrel axis along the machine traveling direction of the threshing device 3, a feed chain 11 that carries and holds and conveys the stock side of the harvested grain culm transported by the grain culm transporting unit 10 described above. Further, a grain culling carrier unit 13 composed of a sliding rail (not shown) is provided.

Then, the combine C has the carding section 4, the scraping mechanism 5, the cutting blade 6, the grain culvert conveying section 10, or the feed chain.
A centralized oil supply device 15 for pressurizing the 11th and the like is provided. The centralized oil supply device 15 includes an oil tank 16, an oil supply pump 17 for pumping the oil in the oil tank 16 to each oil supply portion, a transmission mechanism (not shown) for driving the oil supply pump 17, and a discharge of the oil supply pump 17. It is composed of piping such as an oil pipe that connects the outlet and each refueling part, but this refueling pump 17 is within a predetermined time (about 20 to 30 seconds) as necessary.
Since it is sufficient to drive, it is connected to a transmission mechanism that is not always driven but only when lubricated.

The transmission mechanism (not shown) is driven from the transmission belt side by being pressed against the back of the rotating transmission belt, and is swingable about a fulcrum so as to be in a stopped state by releasing the pressing of the transmission belt. It is provided in the, and is normally urged to a stopped state by a spring.

The refueling pump 17 driven by the transmission mechanism as described above is operated not by the pretreatment device 1 side but by the operator who has boarded the machine, such as the side of the threshing device 3 where the transmission belts are present, or the side of the driver's seat. It was generally placed in a position that was easy to operate.

[Problems to be solved by the invention]

By the way, when the oil supply pump 17 is provided on the threshing device 3 side like the above-described conventional centralized oil supply device 15, since a dedicated drive mechanism for driving the oil supply pump 17 is required, the structure becomes complicated and the threshing is performed. A connection pipe 19 and the like for connecting the oil supply pump 17 on the apparatus 3 side and the distribution unit 18 provided on the back surface of the carding unit 4 on the pretreatment apparatus 1 side are required, and the pretreatment apparatus 1 is also required.
On the side, the oil pipes 18a and 18b branched from the distribution unit 18 and extending to the respective oil injection units extend from the upper side to the lower side, so that there is a problem that the oil pipes are long and their piping becomes extremely complicated. .

Therefore, the present invention was devised to solve the above-mentioned drawbacks, and by utilizing the lower transmission device provided in the pretreatment device to install an oil supply pump therein, without providing a dedicated drive mechanism, The purpose of the present invention is to provide a combined centralized oil supply device that has a compact oil supply pump structure and simplifies piping.

[Means for solving problems]

According to the present invention to achieve the above object, a lower transmission case for driving a pretreatment device is provided in a lower transmission case arranged in the machine width direction in front of a crawler, and an oil supply pump is provided at one end of the lower transmission shaft via a clutch mechanism. Of the oil supply pump is connected to the pretreatment device side while connecting the pump shaft of the oil pump to the suction side of the oil supply pump, and is arranged in front of the lower transmission case along the installation direction of the lower transmission case. Then, a metal main pipe connected to the discharge side of the oil supply pump is provided horizontally, and a plurality of branch pipes for supplying oil to each oil supply portion are provided in the main pipe.

[Action]

As described above, the present invention is configured, and since the pump shaft of the oil supply pump is intermittently connected to one end of the lower transmission shaft that drives the pretreatment device by a clutch mechanism, the rotation of the lower transmission shaft is used to drive the oil supply pump. Therefore, a dedicated drive mechanism for driving the oil supply pump can be eliminated. Therefore, the structure of the fuel pump can be made compact and the space for installing the combine can be reduced.

Also, since the oil tank connected to the suction side of the oil supply pump is installed on the pretreatment device side, the piping distance of the oil pipe may become long or the arrangement may be complicated, as provided on the conventional threshing device side. This can be avoided, and the piping arranged between the oil supply pump and the oil tank can be simplified.

In addition, a metal main pipe connected to the discharge side of the oil supply pump is provided horizontally along the front side of the lower transmission case, and a plurality of branch pipes that lubricate each oil supply section are provided in this main pipe. You can easily perform the installation work and the collection work of the piping installed on the discharge side of the pump.Because the main piping is made of metal, oil leakage etc. to the main piping due to damage due to cutting damage etc. is easy It never happens.

〔Example〕

In the following, the same reference numerals are given to those having the same functions as in FIG.

As shown in FIG. 1, a pair of left and right brackets 25 are erected vertically on the machine stand in front of the threshing device 3, and the left and right bearing parts 25a provided above the bracket 25,
A lateral pretreatment drive case (not shown) is rotatably positioned between 25a, and a pretreatment drive shaft 28 is rotatably supported in the pretreatment drive case. The pretreatment transmission pipe 29 whose upper end side is fixed to the above pretreatment drive case,
The lower end side thereof is fixed to a lower transmission case 30 arranged in the lateral direction (machine body width direction) above and behind the cutting blade 6, and a substantially middle portion in the longitudinal direction thereof is connected to an expandable hydraulic cylinder M. As a result, the lower transmission case 30 side can move up and down around the axis of the pretreatment drive shaft 28.

The pretreatment drive shaft 28 is a transmission belt 2 wound around a passive pulley 28a fixed to the shaft end thereof and a drive pulley 27a fixed to the output shaft of an intermediate case 27 driven by an engine.
Driven by 4.

Further, as shown in FIG. 2, a worm 32 is fixed on a lower transmission shaft 31 rotatably supported in the lower transmission case 30. This worm 32 is driven by the pretreatment drive case. It is driven by a worm wheel 34 fixed to the shaft end of a transmission shaft 33 provided in the processing transmission pipe 29.

As shown in FIGS. 1 and 7, the lower transmission case 30
A pair of left and right carding transmission cases 36 whose base ends are respectively fixed to the left and right sides of each of them are fixed to the upper rear surfaces of the carding portions 4 which are extended obliquely forward and are arranged on the left and right of the cutting width, respectively. Further, the carding transmission case 37 whose base end side is fixed to the lower transmission case 30 is fixed to the upper back surface of the carding section 4 which extends obliquely forward and is arranged at approximately the center of the cutting width. The bevel gears 39 fixed to the shaft ends of the carding transmission shafts 38 supported in the respective carding transmission cases 36 or 37 mesh with the bevel gears 40 respectively fixed on the lower transmission shafts 31. And each carding part 4
The chain, which is raised and has a claw, is driven to rotate.

As shown in FIG. 1, between the grain culm transporting section 10 and the grain culm sandwiching transporting section 13 of the threshing device 3, a handling depth section 45 including a stocker side transport mechanism 43 and a tip side transport mechanism 44 is provided. The handling depth portion 45 is automatically controlled so that the front side moves up and down around the rear side fulcrum by an electric motor or the like which is operated by a sensor (not shown) that detects the culm length of the harvested culm. In addition to this automatic control, manual operation is also possible.

A gear pump type oil supply pump 50 is attached to a side surface of the lower transmission case 30. As shown in FIGS.
The suction side S of the oil supply pump 50 and an oil tank 46 attached to a bracket fixed to the cardboard transmission case 36 on the one side of the machine body are connected by an oil pipe 47 made of synthetic resin. Discharge side D of 50 is lower transmission case 30
Is connected to the starting end side of the main pipe 49 arranged over substantially the entire lengthwise direction (arrangement direction) via a connecting pipe 50a.
The main pipe 49 is made of a rigid metal (preferably having corrosion resistance), and a plurality of branch pipes 49a, 49b, 49c, 49d, 49e, 49f are provided in the middle of the main pipe 49 corresponding to the respective oil supply parts.
, The branch pipes 49a and 49e are the cutting blade 6, the branch pipe 49b is the left scraping portion 5 and the carding portion 4, the branch pipe 49c is the handling depth mechanism 45, and the branch pipe 49d is The central raised portion 4 and the branch pipe 49f are respectively connected to the left-sided scraping portion 5 and the synthetic resin oil pipe leading to the respective oil supply portions of the raised portion 4. Although not shown, a branch pipe leading to the feed chain 11 may be provided.

It is desirable that this main pipe 49 be disposed on the front side of the lower transmission case 30 and be supported and fixed by the lower transmission case 30 so that it will not retract further even if a load such as contact with a harvested grain culm or the like acts. Below the lower transmission case 30, the seventh
As shown in the figure in detail, a pretreatment main frame 61 is fixed over the length of the lower transmission case 30, and a plurality of pretreatment main frames 61 extend forward along the traveling direction of the machine body. The rear end of the auxiliary frame 62 is fixed, the cutting blade 6 is equipped using the pretreatment auxiliary frame 62, and the lower end side of the case of the raised portion 4 is supported by the front end side thereof.

Further, in the present invention, a shaft end (one end) outside the bevel gears 40 and 39 of the lower transmission shaft 31 provided in the lower transmission case 30,
A clutch mechanism 55 for power connection and disconnection is arranged between the case 30 and the pump shaft 51 of the oil supply pump 50 protruding inward from the side surface of the case 30. The clutch mechanism 55 includes a clutch main body 52 having a pawl 52a that is press-fitted into an angular shaft formed at the shaft end of the lower transmission shaft 31, and a pawl that is slidably inserted into the angular shaft of the pump shaft 51.
The clutch body 53 on the pump shaft 51 side is moved to the "cutting position" shown in FIG. 2 by the rotation of the shifter shaft 54 and the clutch body 53 side is moved to move the claw 53a. The pump shaft 51 of the oil supply pump 50 is configured to be intermittently connected to the lower transmission shaft 31 by being selectively slid over the "entry position" that meshes with the claw 52a.

Further, as shown in FIGS. 5 to 6, the other end of the switching lever 56, whose one end is fixed to the outside of the case 30 of the shifter shaft 54, is pivotally connected to the lower end of the connecting rod 57 extending upward.
The upper end of the connecting rod 57 is pivotally connected to one end of an operating handle 58 which is swingable about a fulcrum shaft 59, and the other end of the operating handle 58 about the fulcrum 59 is a spring 60.
The clutch mechanism 55 is always urged to the “cut position” by urging the clutch mechanism 55 upward.

Also, at the tip of the oil pipe connected to the tip of each branch pipe 49a, 49b ... Branched from the main pipe 49, a check valve 66 shown in FIG. 11 is installed to prevent oil from flowing off. The nozzles 65 are connected to each other, but especially in the mowing section 7 due to the adhesion of muddy water, the oil supply hole 65 of the oil supply nozzle 65
There is a problem that a (diameter about 1 mm to 1.5 mm) is blocked.

When the refueling hole 65a is closed, the plugged mud or the like can be removed by inserting a wire or the like from the outside toward the inside, but when the mud or the like that has entered the refueling nozzle 65 is accumulated, it becomes impossible to refuel, There is a drawback that the entire refueling nozzle 65 in which the check valve 66 is installed must be replaced.

Therefore, the oil supply section 75 provided in the reaping section 7 is shown in FIGS.
As shown in the figure, the check valve portion 70 having the check valve 66 and the oil supply nozzle 69 having the oil supply hole 69a are separately provided, and even if the oil supply hole 69a is clogged, the oil supply nozzle 69a is provided.
Can be removed and cleaned independently of the check valve part 70.

That is, as shown in FIGS. 5 and 8, the oil supply section 75 provided in the cutting section 7 has the check valve section 70 connected to the tip of the oil pipe 71a connected to the tips of the branch pipes 49a and 49e. , This check valve part 70 and refueling nozzle 69
The oil supply nozzle 69 is connected to the bracket 72 provided on the pretreatment auxiliary frame 62 by a mounting bolt 72a in a detachable manner.

At the time of refueling with the central refueling device configured as described above, each transmission part of the pretreatment device 1 is loosely rotated, and the operation handle 58 is operated to the "entry position" only for a predetermined time, thereby lowering the lower part. Oil pump driven by transmission shaft 31
Since 50 rotates, the oil in the oil tank 46 can be simultaneously supplied to a plurality of oil supply portions.

[Effect of device]

As described above, according to the present invention, the lower transmission case that drives the pretreatment device is provided in the lower transmission case that is disposed in the machine width direction in front of the crawler, and one end of the lower transmission shaft is connected to the fuel pump through the clutch mechanism. An oil tank, which connects the pump shaft intermittently and connects the suction side of the oil supply pump, is arranged on the side of the pretreatment device, and is arranged in front of the lower transmission case along the arrangement direction of the lower transmission case. Since a metal main pipe connected to the discharge side of the oil supply pump is provided horizontally, and a plurality of branch pipes for supplying oil to each oil supply portion are provided in this main pipe,
It has the following excellent effects.

That is, since the pump shaft of the oil supply pump is discontinuously connected to one end of the lower transmission shaft that drives the pretreatment device via the clutch mechanism, a dedicated drive mechanism for driving the oil supply pump is not required, and the oil supply pump structure is provided. It can be made compact and the space for installing the combine can be reduced.

Further, since the oil tank connected to the suction side of the oil supply pump is arranged on the pretreatment device side, the arrangement of the oil pipes may be complicated and the piping distance may be increased as in the conventional threshing device side. Therefore, the piping between the oil supply pump and the oil tank can be simplified.

In addition, a metal main pipe connected to the discharge side of the oil supply pump is provided horizontally on the front side of the lower transmission case in front of the crawler and along the arrangement direction of the lower transmission case. Since a plurality of branch pipes are provided, the piping on the discharge side can be made short and simple, the work for installing the pipe and the collecting work can be easily performed, and the main pipe is made of metal. Therefore, problems such as oil leakage will not occur in the main pipe due to loss due to cutting or the like.

Further, since the oil supply pump structure is compact and the piping is easy to install and simple, maintenance can be easily performed.

[Brief description of drawings]

1 to 11 show one embodiment of the present invention, FIG. 1 is a side view of a combine pretreatment unit in which the present invention is implemented, and FIG. 2 is a vertical sectional front view of a main part of a lower transmission case. FIG. 4 is a side view of a main part of the lower transmission case, FIG. 4 is a side view of the main part of FIG. 3, FIG. 5 is a side view of the main part, and FIG. 6 is a view of the B part of FIG. Is a perspective view of the lower transmission case showing the main pipe, FIG. 8 is an exploded perspective view of the oil supply section provided in the mowing section, FIG. 9 is a vertical side view of the check valve section, and FIG. 10 is a vertical side view of the oil supply nozzle section. FIG. 11 is a vertical cross-sectional side view of a check valve internal type oil supply nozzle. FIG. 12 is a side view of a pretreatment unit of a combine showing a conventional concentrated oil supply device. 1 ... Pretreatment device, 2 ... Crawler, 30 ... Lower transmission case,
31 ... Lower transmission shaft, 46 ... Oil tank, 49 ... Main piping, 49a,
49b, 49c, 49d, 49e, 49f ... Branch pipe, 50 ... Refueling pump, 51 ...
Pump shaft, 54 ... Shifter shaft, 55 ... Clutch mechanism, 58 ... Operation handle, D ... Discharge side of refueling pump, S ... Suction side of refueling pump.

Claims (1)

[Scope of utility model registration request] 1. A lower transmission case for driving a pretreatment device is provided in a lower transmission case arranged in front of a crawler in a machine width direction, and a pump shaft of an oil supply pump is provided at one end of the lower transmission shaft via a clutch mechanism. An oil tank, which is connected intermittently and connected to the suction side of the oil supply pump, is provided on the pretreatment device side, and the oil supply is provided on the front side of the lower transmission case along the installation direction of the lower transmission case. A combine central lubrication system in which a metal main pipe connected to the discharge side of the pump is installed horizontally, and a plurality of branch pipes for lubricating each lubrication section are provided in this main pipe.