JPS5827612Y2 - Combine lifting device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an elevating operation device that includes an elevating device such as a hydraulic cylinder that moves a reaping section up and down, incorporates an elevating regulating arm into the device, and supports and maintains the reaping section at an appropriate height. For example, there is a conventional technology (Japanese Utility Model Application Publication No. 50-97926) that restricts the lifting range of the cutting section during work in order to set the cutting height of the culm. There is a lack of a supporting structure, and although there is a conventional technology that fixes and supports the reaping section at the maximum raised position, there is a lack of a structure that supports the reaping section in the on-road running position, and there is no way to set the reaping work height. It was difficult.

The present invention solves the above-mentioned conventional drawbacks, and includes a hydraulic cylinder that raises and lowers the reaping section around a rotational fulcrum by operating a lifting lever 19 disposed near the driver's seat 15. In a combine harvester that regulates lifting and lowering operations, the middle of the lifting and lowering regulating arm is rotatably supported by the hydraulic cylinder via a support rod, the reaping part is pivotally supported in a road running position, and the reaping part is supported in the road running position. A locking notch is formed at one end of the elevation regulating arm, and the elevation locking notch for supporting the reaping section at the maximum raised position and the reaping work height upper limit notch for regulating the upward movement of the reaping section during operation are connected to the elevation control arm. The regulating arm is connected via a wire to a regulating operating lever formed at the other end of the regulating arm and attached to the elevating lever via a spring, and each knob is connected to a hydraulic cylinder by rotating the regulating arm using the operating lever. The regulating arm is selectively engaged with the pivot at the tip of the piston rond, and the regulating arm is always held by the spring force of the spring in a position where the upper limit notch and the pivot can be engaged in the normal cutting mode. Alternatively, supporting the reaping section at the maximum raised position and regulating the raising of the reaping section during reaping work can be easily performed by rotating the lifting regulation arm, and switching between each support position and raising regulation of the reaping section can be performed with a simple structure. It can be done safely and
The rotation of the lifting regulation arm can be easily controlled remotely, and the reaping section can be supported at an appropriate height during maintenance inspection, on-road driving, and reaping operations, and the upper limit height of the reaping section can be adjusted during normal reaping operations. For example, by raising the reaping section above a certain height and tilting the machine body, the adverse effects such as imbalance of the machine body or reduction in work accuracy in the threshing section can be eliminated, thereby making it possible to perform work safely and efficiently. It is an object of the present invention to provide a lift operating device for a combine harvester.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a schematic side view of the combine harvester, and Fig. 2 is a plan view of the same. 5 is a hydraulic cylinder that is an elevating device; 6 is a machine base that supports the front and rear of the vehicle on the truck frame 1 by the cylinder 5 and a pivot point 7; 8 is a machine with a built-in handling cylinder 9 and is mounted on the machine base 6; The threshing department, 1
0 is a reaping part for two-row mowing that is attached to the front part of the machine stand 6, 11 is a straw cutting part that is attached to the rear part of the machine stand 6, 12 is an engine, 1
3 is a rice holder, 14 is a driving operation console supported by the truck frame 1, 15 is a driver's seat, 16 is a driving operation unit, 17, 1
7 is a side clutch lever 118 is a hydraulic device provided on the side of the driver's seat 15; 19 is a lift lever that operates the hydraulic cylinder 5 to appropriately lift the front side of the machine base 6 together with the reaping section 10; The section 10 includes a grass dividing board 20, a culm conveyor 21, and a cutting blade 22, and continuously cuts the culm and transports the culm via a feed chain 23 and a straw removal chain 24. Then, it is formed to be threshed.

The hydraulic device 18 is driven by the engine 12 and connected to the hydraulic cylinder 5 so that the hydraulic cylinder 5 is actuated by operating the lift lever 19.

FIG. 3 is an enlarged side view of a portion of the truck frame 1. A base plate 26 is fixed to the horizontal pipe 25 constituting the frame 1, and the lower end of the hydraulic cylinder 5 is pivotally attached to the plywood 26.

Further, a receiving plate 28 is fixed to the front end of the machine base 6, and the tip of the piston rod 29 of the hydraulic cylinder 5 is attached to the receiving plate 28 with the pivot 3.
0, and the reaping section 10 is configured to move up and down together with the front end of the machine stand 6 in accordance with the expansion and contraction of the piston rod 29 about the pivot point 7.

A support rod 31 is provided protruding from the upper end of the hydraulic cylinder 5, and the middle of a C-shaped elevation regulating arm 32 is pivotally supported at the tip of the support rod 31 via a support shaft 32, with the piston rod 29 being expanded and contracted as appropriate. This is fixedly supported by the arm 32, which maintains rotation of the machine base 6 via the rotation fulcrum 7, and supports the reaping section 10 in the reaping work position, on-road traveling position, and maintenance/inspection position.

FIG. 4 shows the hydraulic device 18 and the elevation regulating arm 32, and the hydraulic device 18 is connected to the hydraulic oil tank 3.
4, a hydraulic pump 35, and a hydraulic switching valve 36, the pump 35 is interlocked and connected to the engine 12 via a pulley 37 and a belt 38, and the lifting lever 19 is configured to operate the switching valve 36. At the same time, the switching valve 36 is connected to the hydraulic cylinder 5 via an oil pipe 39.

Further, a tube 41 containing a push-pull wire 40 is inserted into the lever 19, a handshake 42 is screwed onto the upper end of the lever 19, and a push button 43, which is a regulating operation lever, is attached to the handshake 42.

Then, the end of the wire 40 is coupled 44 to the push button 43, and a spring 45 is applied to the push button 43 so that the push button 43 always protrudes from the handshake 42.
It is formed so as to be stretched.

The upper end of the tube 41 is fixed to the end of the lever 19 via a metal fitting 46.

The other end of the wire 40 is connected to the lower end leg 32a of the elevation regulating arm 32 via a pin 47, and the end of the tube 41 is attached to a metal fitting 48 provided on the hydraulic cylinder 5.

Furthermore, a semicircular notch 49 that is a traveling lock part is formed on the inside (upper edge) of the lower end leg 32a of the lift regulating arm 32, and a semicircular notch 49 that is a lift lock part is formed on the outside (upper edge) of the upper end leg 32b of the arm 32. A circular notch 50 is formed, and a reaping work height upper limit notch 5 is formed on the inside (lower edge) of the upper end leg 32b.
1, and a pivot 30 which pivotally supports the piston rod 29 on the receiving plate 28 of the machine base 6 has each notch 49, 50°5.
1, and is formed to restrict the expansion and contraction of the piston rod 29. When the push button 43 is projected by the spring 45 and the wire 40 is pulled, the arm 32 engages with the piston rod 29. 29, and is positioned as shown by the solid line in FIG. When the pivot 30 moves freely in the lower region and the pushbutton 43 is pressed, the arm 32 is positioned as shown by the imaginary line in FIG. The pivot shaft 30 is formed so as to engage with the semicircular notch 49 in the closed state.

The present invention is constructed as described above, and when the reaping section 10 is to be maintained and inspected, the user grasps the handshake 42 and presses the push button 43.
Tilt the lift lever 19 to supply the hydraulic pressure of the hydraulic device 18 to the cylinder 5, project the piston rod 29 to the maximum extent, and then release the push button 43 to move the lever 19 and lower the machine base 6 slightly. When it is moved, the pivot 30 engages with the semicircular notch 50 as shown by the solid line in FIG. 4, and the reaping section 10 is firmly held at the upper limit position.

After that, when the maintenance inspection is completed, the machine base 6 is slightly lifted by operating the lever 19, the push button 43 is pressed to tilt the elevation regulating arm 32 to the imaginary line position in FIG. The piston rod 29 is moved back,
The reaping section 10 is lowered together with the machine stand 6.

Also, when driving the combine harvester on the road, first press lever 1.
9 to lift the machine base 6 to an appropriate height, press the push button 43 to tilt the elevation regulating arm 32 to the imaginary line position in Fig. 4, and at the same time lower the machine base 6 by operating the lever 19, the piston rod Due to the return movement of 29, the axis 30
engages with the semicircular notch 49 to firmly hold the reaping section 10 in the on-road driving position.

This release can be done by operating the lever 19 on the piston rod 2.
9 is slightly protruded, the elevation regulating arm 32 moves back to the position shown in solid line in FIG.

When further reaping work is to be carried out, move the elevation regulating arm 32 to the fourth position.
The position shown in the solid line in the figure is set, and the reaping work height upper limit notch 51 is positioned on the movement locus of the pivot shaft 30, the pivot shaft 30 is movable in the area below the notch 51, and the amount of expansion and contraction of the piston rod 29 is set to the required stroke. By operating a lever 19, the reaping section 10 is raised and lowered together with the machine stand 6, and the mowing height of the culm is set and the reaping section 10 is moved up and down necessary for turning.

As is clear from the above embodiments, the present invention has a driver's seat 15.
Equipped with a hydraulic cylinder 5 that raises and lowers the reaping part 10 around the rotational fulcrum 7 by operating a lifting lever 19 disposed nearby,
In the combine that regulates the vertical movement of the reaping part 10 by the cylinder 5, an intermediate vertical movement regulating arm 32 is rotatably supported on the hydraulic cylinder 5 via a support rod 31,
A travel locking notch 49 for supporting the reaping section 10 in the road running position is formed at one end of the lift regulating arm 32, and a notch 50 for raising and lowering the lock for supporting the reaping section 10 at the maximum raised position, and a notch 50 for the lifting lock that supports the reaping section 10 at the maximum raised position, and a notch 49 for the lifting lock that supports the reaping section 10 in the on-road traveling position, and a notch 50 for the lifting lock that supports the reaping section 10 at the maximum raised position. A reaping work height upper limit notch 51 is formed at the other end of the lift regulating arm 32, and a wire 40 is attached to the regulating lever 43 attached to the lift lever 19 via a spring 45.
The regulation arm 32 is connected to the operating rod 4 via the control arm 32.
3 selectively engages each of the notches 49, 50, 51 with the pivot shaft 30 at the tip of the piston rod 29 of the hydraulic cylinder 5, and also engages the upper limit notch 51 and the pivot shaft 30 in normal cutting mode. Since the regulating arm 32 is always held in the engageable position by the spring force of the spring 45, it is possible to support the reaping section 10 in the on-road traveling position or the maximum raised position, and to restrict the raising of the reaping section 10 during reaping work. This can be easily done by rotating the elevation regulating arm 32, and switching between the support positions and elevation regulation of the reaping section 10 can be done safely with a simple structure. Rotation switching can be easily controlled remotely, and the reaping section 10 can be supported at appropriate heights during maintenance inspections, on-road driving, and reaping operations.Moreover, during normal reaping operations, the upper limit height of the reaping section 10 is regulated, for example, when the reaping section 10 is 10 above a certain height and tilting the machine body, it is possible to eliminate the negative effects such as imbalance of the machine body during work or a decrease in work accuracy in the threshing section 8, and therefore always safe, good and accurate. It has remarkable effects such as being highly practical and easy to work with.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a schematic side view of the combine harvester, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the main part, and Fig. 4 is a partially enlarged explanation thereof. It is a diagram. 5... Hydraulic cylinder, 7... Rotating fulcrum, 10... Reaping section, 15... Driver's seat,
19... Lifting lever 29... Piston rod, 30... Pivot, 31... Support rod, 32... Regulation arm, 40... ...Wire, 43...Operation rod (push button), 45...
...Spring, 49, 50, 51... Notsuchi.

Claims (1)

[Scope of utility model registration request] A combine harvester comprising a hydraulic cylinder 5 for raising and lowering the reaping part 10 around a rotational fulcrum 7 by operating an elevating lever 19 disposed near the driver's seat 15, and regulating the raising and lowering movement of the reaping part 10 by the cylinder 5, An intermediate part of the elevation regulating arm 32 is rotatably supported by the hydraulic cylinder 5 via a support rod 31, and a travel locking notch 49 for supporting the reaping section 10 in the road traveling position is formed at one end of the elevation regulating arm 32. At the same time, a lifting lock notch 50 for supporting the reaping unit 10 at the maximum raised position and a reaping work height upper limit notch 51 for regulating the upward movement of the reaping unit 10 during work are formed at the other end of the lifting regulating arm 32, respectively; The lifting lever 1
The regulating arm 32 is connected via a wire 40 to a regulating operation lever 43 attached to the hydraulic cylinder 5 via a spring 45, and the notches 49, 50, 51 are connected to the hydraulic cylinder 5 by rotating the regulating arm 32 using the operating lever 43. The regulating arm 32 is selectively engaged with the pivot shaft 30 at the tip of the piston rod 29, and the regulating arm 32 is always held by the spring force of the spring 45 in a position where the upper limit notch 51 and the pivot shaft 30 can engage with each other during normal cutting. A lift operating device for a combine harvester, characterized in that it is configured as follows.