JPS6136871Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic oil supply device for each operating part of a mobile agricultural machine or the like.

In other words, in mobile agricultural machinery, etc., where each hose extends from a distributor linked to a hydraulic pump and is configured to automatically supply oil to each operating part of the machine, the clutch operation of the hydraulic pump and each hose of the machine from the distributor connect to each operating part of the machine. To provide an apparatus that can selectively switch oil supply to an operating part and automatically refuel it, which can be reliably and easily carried out suitably by operating only one knob.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of the front part of the combine harvester. The front part of the machine body supported by the crawler 7 includes each lifting case 8, cutting blade 9, lower conveyance chain 10, upper conveyance body 11, and vertical conveyance chain 12. At the rear of the reaping section C, a threshing section D equipped with a feed chain B, etc. is installed. is equipped with a control column 15, a seat 16, and a side column 17.

A distributor A and a hydraulic pump P are installed inside the side column 17, and the hydraulic pump P, which communicates with the oil tank 18 via a hose 19, is configured to engage and disengage the clutch by rotating the upper clutch arm 20. The distributor A is equipped with a longitudinal shaft hole 22, has an inlet 2 communicating with the shaft hole 22 at one end, and extends from the inlet 2 toward the other end. Nozzles 3a, 3b, 3c are provided at intervals and communicated with the shaft hole 22, and the supply port 2 and the discharge side of the hydraulic pump P are connected through a hose 21, and connected to each nozzle 3a, 3b, 3c. The hoses 1a, 1b, and 1c are extended and connected to operating parts such as the crawler 7, each conveyance chain, and the cutting blade 9, respectively.

A cylindrical spool a having one end communicating with the supply port 2 is inserted into the shaft hole 22 of the distributor A,
The nozzles 3a, 3 are arranged around the outer circumference of the spool a.
Through holes 23a,
23b and 23c in order around the spool a.
Four recesses 26 are formed at 90 degree intervals on the outer periphery of the spool a near the other end of the spool a, into which the balls 25 pressed by the springs 24 fit. A seat plate 27 is fitted on the other end side, and a square shaft portion 28 is formed.

Reference numeral B designates a clutch body, and a square shaft hole 29 is formed at one end side of the clutch body B in which a circumferential groove 41 is formed, and the square shaft hole 29 can be fitted into the square shaft portion 28 so as to be movable only in the axial direction. A fan-shaped convex portion 6 with a screw portion 30 protruding from the side and a large and a small convex portion 6 on the end surface 31 on the other end side.
a and 6b are formed by shifting 180 degrees, and a shifter 33 that engages with the circumferential groove 41 of the clutch body B is eccentrically fixed to the lower part of the support shaft 32 that is inserted into the upper part of the vessel E of the clutch body B. An arm 34 fixed to the upper end of the support shaft 32 and the clutch arm 20 are connected by a rod 35.

A compression spring 36 is interposed between the clutch body B and the seat plate 27, and the other end side of the spool a is pressed through the seat plate 27. 23c is the nozzle 3a, 3
The spool a is rotatable only around the inner periphery of the shaft hole 22 while being fitted into and removed from the balls 25 that press the spool a into the recesses 26 at predetermined positions that match the spools b and 3c.

On the inner surface of the container body E corresponding to the other end side of the clutch body B, large and small fan-shaped recesses 5a and 5b into which the convex parts 6a and 6b can fit, respectively, are formed with a 180 degree offset. A threaded hole 38 is formed in the shaft portion 37 extending inward from the knob 4 exposed to the inside, and the threaded hole 38 is screwed into the threaded portion 30 of the clutch body B. 4 and the clutch body B are integrally constructed.

A pointer 39 is provided protruding from the outer periphery of the knob 4, and a support plate 40 is mounted on the side surface of the side column 17, on which four marks K, B, C, and D are provided to which the pointer 39 can point.

Therefore, FIGS. 1 to 4 and 16
As shown in the figure, when the pointer 39 points to the stop mark, the convex portions 6a and 6b of the clutch body B pressed by the compression spring 36 move to the concave portions 5a and 5.
The ball 25, which is pressed by the spring 24, is fitted into one of the four recesses 26, and the spool a is in a state where it does not rotate. 23a, 23b, 2
3c is shifted from each nozzle 3a, 3b, 3c and does not match, and communication between the supply port 2 and each nozzle 3a, 3b, 3c is cut off, and the clutch of the hydraulic pump P is disengaged and comes to a stopped state.

When refueling there, hold the knob 4 with the pointer 39 pointing to the stop mark and compress it against the compression spring 36. As shown in FIG. In conjunction with this, the shifter 33 is rotated in the direction of the arrow in FIG. 19, and the clutch is engaged via the rod 35, thereby operating the hydraulic pump P. Then, when the knob 4 is rotated and the pointer 39 is aligned with the mark as shown in FIG. 17, the spool a rotates simultaneously with the rotation of the knob 4, and the through hole 23c matches the nozzle 3c, causing the ball to be pressed. 25 fits into the adjacent recess 26 to lock the spool a in that state, and the clutch body B is pressed by the compression spring 36 so that its convex parts 6a and 6b are brought into contact with the inner surface of the container body E. This prevents the shifter 33 from returning and maintains the clutched state of the hydraulic pump P, and the oil pumped from the hydraulic pump P flows from the nozzle 3c to the hose 1c, and further from the hose 1c to the operating part to be lubricated. become.

In this way, when the pointer 39 is aligned with the other marks H and D, the other nozzles 3b and 3a sequentially communicate with the inside of the spool a to selectively lubricate desired operating parts.

That is, except for the pointer 39 of the knob 4 pointing to the stop mark, the protrusions 6a and 6b of the clutch body B come out of the recesses 5a and 5b formed on the inner surface of the container E and come into contact with this inner surface. At this point, the hydraulic pump P maintains the clutch engaged state and supplies oil into the spool a from the supply port 2, and the knob 4 maintains a rotatable state, and the rotation of the knob 4 opens each through hole 2.
3a, 23b, 23c to each nozzle 3a,
The oil supplied in the spool a is communicated with the spools 3b and 3c to supply the oil to the respective operating parts.

As described above, the present invention provides a mobile agricultural machine or the like in which each hose extends from a distributor connected to a hydraulic pump to automatically supply oil to each working part of the machine, and the distributor has a supply connected to the hydraulic pump. Forming each nozzle that communicates with the inlet and each hose,
A spool for selectively switching the communication between the supply inlet and each nozzle is incorporated, and the clutch operation of the hydraulic pump and the switching operation of the spool are linked and linked by the operation of one knob. By operating this, you can selectively switch between the clutch operation of the hydraulic pump and the supply of oil from the distributor to each operating part of the aircraft through each hose, so it can be operated reliably and easily with just one knob. It has the feature that it can be easily implemented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the front part of the combine, Fig. 2 is a plan view thereof, and Fig. 3 is a side view of the front part of the combine harvester.
The figure is a plan view of the main part, Figure 4 is a sectional view taken along the - line in Figure 3, Figure 5 is an exploded view of Figure 4, and Figures 6 to 11 are - and - lines in Figure 5. ,
12 is a partial perspective view of FIG. 5, FIG. 13 is a partial sectional view of FIG. 4, and FIG. 14 is a partial sectional view of FIG. Fig. 13 is an explanatory view of the operation, Fig. 15 is a plan view of a part of Fig. 4, Fig. 16 is a side view of a part of Fig. 4, and Figs. FIG. 4 and FIG. 15 are respectively operational explanatory views. P... Hydraulic pump, A... Distributor, 1a, 1
b, 1c...Hose, 2...Inlet, 3a, 3
b, 3c... nozzle, a... spool, 4... knob.

Claims (1)

[Scope of utility model registration request] In a mobile agricultural machine or the like configured such that each hose 1a, 1b, 1c extends from a distributor A that communicates with the hydraulic pump P to automatically supply oil to each operating part of the machine body, the distributor A communicates with the hydraulic pump P. A spool a that forms respective nozzles 3a, 3b, 3c that communicate with the supply port 2 and each hose 1a, 1b, 1c, respectively, and selectively switches communication between the supply port 2 and each nozzle 3a, 3b, 3c. An automatic oil supply device for each operating part in a mobile agricultural machine, etc., characterized in that the clutch operation of the hydraulic pump P and the switching operation of the spool a are interlocked and linked by operation of one knob 4. .