JPH0142441Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an oil supply device for a reaping machine such as a combine harvester or a binder.

Generally, the pretreatment section of this type of reaper includes a cutting blade,
It is preferable to provide an oil supply device to suitably supply lubricating oil to operating parts such as the grain culm combing body and the grain culm conveying body to ensure smooth reaping action. For this reason, oil supply devices that use electric pumps or oil supply pumps that are transmitted from a pre-processing unit transmission case, etc., have been known, but the former requires a dedicated electric motor, and the wiring for the electric motor is difficult. This has drawbacks such as a complicated structure and high cost. On the other hand, in the case of the latter, a complicated and expensive clutch mechanism must be installed in the transmission system to the oil supply pump to interrupt the power.
Moreover, once a failure occurs in the transmission system to the oil supply pump, the transmission system to the pretreatment section will also fail, requiring a great deal of effort and time for repairs and maintenance. There are drawbacks.

Therefore, the oil supply pump to the pre-processing section side is configured to be driven by being brought into pressure contact with an endless band that transmits power to the input shaft of the pre-processing section so as to be able to freely come and go.
A model with a simple structure and low cost that can supply oil to each operating part of the pre-processing section has been proposed, but since this product has a structure in which the oil supply pump and the operating lever are integrated, the oil supply pump cannot be used. The pressing force on the endless belt changes depending on the operating force of the control lever, making it difficult to operate with the appropriate pressing force.For this reason, if the pressing force is too strong, the shaft of the oil supply pump may break or the endless belt may On the other hand, if the pressing force is too weak, the oil supply pump will rotate unevenly and will not be able to achieve its full performance, and the vibration caused by the oil supply pump's drive pulley rolling on an endless band may cause the operation lever to New problems were raised, such as direct transmission to workers through the computer, causing fatigue, and there was a need to further improve these problems.

The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned circumstances, and is configured so that the refueling operation is performed by bringing the refueling pump into pressure contact with the endless belt for power transmission of the pretreatment section. However, the refueling pump and the operating lever for the refueling pump are moved to a position where energy is stored in conjunction with the operation of the operating lever to the refueling position, and the refueling pump is pressed against the endless belt from a position spaced apart from the endless belt. By connecting elastically via an elastic device that forcibly displaces the pump, the refueling pump can always be pressed against the endless belt with a constant pressing force regardless of the operating force of the operating lever, thereby preventing shaft damage. In a reaping machine, it is possible to perform refueling work comfortably and without operational errors by absorbing vibrations caused by the drive pulley rolling on an endless belt, without causing any inconvenience such as sagging or not being able to exhibit sufficient performance. The purpose is to provide a refueling device.

The structure of the present invention will be explained based on an embodiment shown in the drawings. Reference numeral 1 denotes a traveling machine body of a combine harvester, and a pre-processing unit is installed at the front part of the traveling machine body 1 via an elevating mechanism (not shown). 2 is equipped to be able to swing up and down. The preprocessing unit 2 includes a divider 3,
It is the same as before that it is composed of a grain culm combing body 4, a cutting blade 5, a grain culm lifting conveyor 6, and the like.

Reference numeral 7 denotes a mission case provided on the traveling machine body 1 side, and an input shaft 8 coaxial with the vertical swing fulcrum of the preprocessing section 2 is arranged above the mission case 7. Input pulley 8 provided on the input shaft 8
An endless belt 9 for power transmission is suspended between the drive pulley 7a of the transmission case 7 and the drive pulley 7a of the transmission case 7. 1
0 is a tension pulley for the endless band 9. Frame rod 12 with gear case 11 fixed to the tip side
As shown in Fig. 4, an inverted L-shaped mounting piece 13 is fixed to the base end of the mounting piece 13, and a boss portion 14a is rotatably inserted into a support shaft 13a protruding from the mounting piece 13. A bracket 14 is attached. 15 is an oil supply pump fixed to the bracket 14, and a drive pulley 1 is attached to the shaft 15a of the oil supply pump 15.
6 is fixed via a tightening bolt 16. The bracket 14 has a support shaft 13a as a fulcrum, and the driving pulley 16 is connected to the endless belt 9 on the input pulley 8a side.
The frame rod 12 and the bracket 1 are rotated between a contact position where the fuel pump 15 is rotated and a contact position where the refueling pump 15 is rotated, and a separate position where the fuel pump 15 is moved away from the endless band 9.
4 (the biasing force is set to be weaker than that of the torsion bomb 21, which will be described later).
is biased and held toward the separated position by.

On the other hand, on the tip side of the support shaft 13a, there is an operating lever 2 disposed on the preprocessing section cover 19 near the driver's seat 18.
A boss portion 20a of No. 0 is rotatably inserted through the bracket, and a torsion bullet 21 is fitted on the outer periphery of this boss portion 20a and the boss portion 14a on the bracket side. One end 21a of this torsion bomb 21 is locked to the base side of the operating lever 20, and the other end 21b is locked to a locking pin 14b protruding from the bracket 14. By operating from the refueling position to the prostrate refueling position, the torsion bomb 21 stores energy, and this stored force moves the bracket 14 located at the separated position to the contact position against the tension bomb 17. It is designed to cause displacement.
Here, 12a is a bracket for mounting the tension bomb 17 on the frame rod 12 side, 12b is a stopper for the operating lever 20 operated to the refueling position, 13b is a stopper for the bracket 14 located at the separated position, 1
4c is a stopper of the operating lever 20 located at the non-lubrication position.

22 is an oil tank provided on the back side of the grain culm combing body 4, and the oil supply pump 1 is connected from the oil tank 22.
5, the pipe 23a is branched into a plurality of pipes along the way, and each branch pipe 23b is connected to a cutting blade 5, a grain culm combing body 4, etc.
Lubricating oil is supplied from each oil supply nozzle 23 provided at the tip, which is arranged at each operating section of the pre-processing section 2 such as, and furthermore, the chain 24 of the grain culm lifting conveyor 6, which requires lubricating. However, in this embodiment, as shown in FIG. 6, an indicator part is interposed in the middle of the branch pipe leading to the chain 24 to notify the refueling status. The indicator pot 25 constituting this indicator part is fitted into a mounting part 25a fixed to the preprocessing part cover 19 side, and is attached to the driver's seat 1.
A transparent cup part 25b that is visible from 8 and an inlet 25c that communicates with the piping 26 on the side of the oil supply pump 15.
, a discharge port 25d communicating with a pipe 26a to the chain 24 side, and an overflow pipe 25e extending into the interior of the indicator pot 25 to near the upper ceiling. A check valve 27 and an aperture collar 27a are installed between the pipe 26 and the inlet 25c.
is interposed so that lubricating oil can flow into the indicator pot 25 without being affected by the pressure of the oil supply pump 15. A pipe body 29 having a T-shaped pipe joint 28 connected to its tip is connected to the lower end of the overflow pipe 25e. The pipe joint 28 is connected to the pipe 26a as well as an auxiliary pipe 29a that extends to the chain 24 side and an air vent pipe 29b. When lubricating oil is supplied to the indicator pot 25 by driving the oil supply pump 15, the indicator pot 25
The air inside escapes to the outside air through the overflow pipe 25e, and when the lubricating oil overflows into the indicator pot 25, the lubricating oil flows into the overflow pipe 2.
5e to the chain 24 via the pipe bodies 29, 29a, and when the oil supply pump 15 is stopped, the overflow pipe 25 is supplied via the pipe bodies 29b, 29.
Air flows into the indicator pot 25 from e, and lubricating oil is supplied to the chain 24 via a pipe 26a. Here, 25f is a mark provided on the outer periphery of the cup portion 25b, and in this embodiment, when the lubricating oil that has flowed into the indicator pot 25 reaches between the uppermost stage and the second stage after the oil supply pump 15 is driven, The amount of oil supplied to each drive section is set to be appropriate.

Next, the operation of the present invention constructed as described above will be explained. The grain culms to be planted in the field are processed in the pretreatment section 2.
The grain is harvested by the culm and transported to the rear threshing section, but if it is desired to supply lubricating oil to each operating section of the pre-processing section 2 during such grain culm reaping work, the operator must operate the The lever 20 may be operated from an upright non-lubrication position to a laid-down oiling position where it abuts the stopper 12b. That is, when the operating lever 20 is in the upright state, the torsion bullet 21 is not loaded with energy, and the tension bullet 17 causes the drive pulley 16 to be separated from the endless belt 9 and the refueling pump 1
5 is located in the separated position where it is not activated, but when the operating lever 20 is laid down, the torsion bomb 21 is stored, and the bracket 14 moves from the separated position against the tension bomb 17 to the driving pulley 16. is in contact with the endless belt 9 and is located at a contact position where the oil supply pump 15 is activated. In this case, the bracket 14 is rotated to the contact position by the stored force of the torsion bullet machine 21, more precisely, the biasing force obtained by subtracting the tensile force of the tension bullet machine 17 from this stored force, and the drive pulley 16 is rotated to the endless belt. 9, the drive pulley 16
The pressing force on the endless band 9 is always constant regardless of the magnitude of the operating force of the operating lever 20 toward the folding side,
Therefore, in cases where the operation lever 20 and the oil supply pump 15 are integrated, the operation force may be too large and the shaft 15a may be damaged or the endless band 9 may be worn out, or the operation force may be too small and the oil supply pump 15 may be damaged.
It is possible to reliably prevent the oil supply pump 15 from becoming inoperable sufficiently, and the oil supply pump 15 can always be operated with an appropriate pressing force by the torsion mechanism 21 that elastically connects the operation lever 20 and the oil supply pump 15. This enables reliable and stable refueling work. Moreover, the vibration caused by the driving pulley 16 rolling on the endless belt 9 is also suppressed by the operation lever 20 and the oil supply pump 15.
As a result of being elastically connected by the torsion bullet machine 21, it is absorbed by the torsion bullet machine 21,
Therefore, the operator can operate the operating lever 20 without vibration, which provides a good feel in the hand and reduces fatigue.

When the lubricating oil supplied to the indicator pot 25 by the operation of the oil supply pump reaches between the uppermost stage and the second stage, the user releases the operating lever 20. As a result, the operating lever 20 returns to the position where it contacts the stopper 14c due to the accumulated force of the torsion bomb 21, and the bracket 14 returns to the separated position due to the biasing force of the tension bomb 17, and the fuel pump 15 is stopped. The refueling work is then completed. In this way, in the present invention, the operating lever 20 automatically returns to the upright non-refueling position when you release your hand.
Unlike when trying to obtain a constant pressing force using the biasing force of a bullet that moves beyond the fulcrum of the bracket, the operating lever does not remain in the refueling position due to erroneous operation or forgetting to operate it.

Furthermore, lubricating oil is supplied to the indicator pot 25 by the drive of the oil supply pump 15, but the indicator pot 25 is connected to the overflow pipe 25e.
Since the lubricating oil is communicated with the outside air through the indicator pot 25, the lubricating oil is stored in the indicator pot 25 without stagnation. Then, when the amount of lubricating oil stored reaches the appropriate position, the operating lever 20 can be released to stop the oil supply pump 15. However, if the oil supply pump 15 continues to operate, the excess amount supplied to the indicator pot 25 will be reduced. The lubricating oil flows from the overflow pipe 25e to the pipe 29,
Since the lubricating oil overflows to the chain 24 side where it should originally be lubricated via the lubricating oil 29a, the lubricating oil does not overflow to the pretreatment cover 19 etc. due to excessive lubricating. Also, when the oil supply pump 15 is stopped, the indicator pot 2
The lubricating oil in the indicator pot 25 is drained by its own weight by the outside air flowing into the indicator pot 25 via the pipes 29b, 29 and the overflow pipe 25e.
The chain will be supplied with oil via 6a. In this way, in this embodiment, the proper amount of lubricating oil is determined by filling the indicator pot 25 with the proper amount of lubricating oil, so that the proper amount of lubricating oil is always supplied regardless of changes in temperature, oil viscosity, etc. Can be lubricated. Furthermore, since the oil filling operation can be confirmed by the oil flowing into the indicator pot 25, abnormalities such as oil shortage in the oil tank 22 can be quickly discovered, and adverse effects on other parts such as seizure of the oil supply pump 15 due to idle running can be prevented. It can be prevented.

Note that the pipe 26a may be replaced with an oil tank as shown in FIG. 1 instead of the chain 24.

In summary, the present invention provides a reaper in which power from the machine body is transmitted to the input shaft of the pre-processing section through an endless belt, in which oil is supplied to each operating section such as the cutting blade of the pre-processing section. The pump is installed in the pre-processing section so that the drive pulley of the oil supply pump can be displaced between a contact position where the drive pulley contacts the endless belt and is driven to rotate, and a separate position where the drive pulley of the oil supply pump is separated from the endless belt and stops driving. and an operating lever for the refueling pump are elastically connected via an elastic device that stores energy in conjunction with the operation of the operating lever to the refueling position and forcibly displaces the refueling pump from a separated position to a contact position. Therefore, each operating part is supplied with oil by using an oil supply pump equipped with a drive pulley that presses against the endless band so that it can freely move toward and away from the endless band. As a result of using the stored force of the ammunition stored in the operation, the drive pulley is always pressed against the endless belt with a constant pressing force regardless of the magnitude of the operating force of the control lever, which makes it possible to refuel. The pump can be driven in an optimal state that is completely unaffected by the operating force of the operating lever. Moreover, since the refueling pump and the operating lever are elastically connected, the vibrations caused by the driving pulley rolling on the endless belt can be absorbed by the elastic device, effectively preventing vibrations from being transmitted to the operating lever. This also has the effect of allowing comfortable operation with less fatigue.

[Brief explanation of the drawing]

The drawings show an embodiment of the oil supply device for a reaper according to the present invention, and FIG. 1 is a side view of the main parts of the reaper, FIG. FIG. 3 is an explanatory diagram showing the oil supply state, FIG. 4 is an exploded sectional view of the main parts, FIG. 5 is a perspective view of the vicinity of the driver's seat, and FIG. 6 is a diagram of the lubricating oil supply route. In the figure, 1 is a traveling machine body, 2 is a preprocessing section, 8 is an input shaft, 9 is an endless belt, 15 is a refueling pump, 16 is a drive pulley, 17 is a tension bomb, 20 is an operating lever,
21 is a twisting bullet machine.

Claims (1)

[Scope of utility model registration request] In a reaper in which power from the machine body is transmitted to an input shaft on the pre-processing section side via an endless belt, a refueling pump for each operating section such as the cutting blade of the pre-processing section is driven. The pre-processing section is provided with a refueling pump and an operating lever for the refueling pump, which is disposed in the pre-processing section so as to be displaced between a contact position where the pulley contacts the endless band and is driven to rotate, and a separate position where the pulley separates from the endless band and stops driving. and are elastically connected to each other via an elastic device that stores energy in conjunction with the operation of the operating lever to the refueling position and forcibly displaces the refueling pump from the separated position to the contact position. Device.