JPH0513146Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a grain culm lifting device in a grain culm harvester.

Background Art A grain culm lifting device in a grain culm reaping machine such as a combine or a binder is usually equipped with a chain or the like between a driving wheel and a driven wheel provided in a rearwardly inclined lifting case consisting of an upper surface cover and a lower surface cover. The endless body is wound, and the grain culm protrudes outward from the lifting case on the lifting side (the upward stroke side of the endless body) and on the lifting side (the downward stroke side) of the lifting case. It is made up of a number of trigger claws that retract inward.

Generally, a cushioning rubber is disposed on the upper side of the lifting device, and when the endless body transitions from the upward stroke to the downward stroke, the lifting claw is brought into contact with the cushioning rubber and the non-operating position is reached. It is designed to rotate and change its appearance.

Problems that the invention aims to solve: However, the lower end of the hoisting case is close to the field, and the constantly rotating hoisting claw lifts the erect grain culms in a combing manner, so it does not collect mud, straw, etc. It is easy for straw debris to enter the case through the opening of the lifting claw, and once straw dust etc. enters the case, it moves around or accumulates inside the case, interfering with the lifting action. Particularly, straw waste and the like are likely to accumulate or get wrapped around the area near the cushioning rubber installation position in the upper part of the inside of the raising case.

Therefore, it is necessary to periodically remove the cover and lift it up to clean the inside of the case, which is difficult to clean. In particular, the drawer case is long and has various covers attached around the case, so in order to clean the inside of the drawer case, you must first remove those covers and then remove the cover of the drawer case. The work is troublesome and takes a lot of time.

Means for Solving the Problems Therefore, the present invention involves winding an endless body between a driving wheel provided at the upper part and a driven wheel provided at the lower part, and the endless body has an outer part on the side where the grain culm is pulled up. In a grain culm lifting device for a grain culm reaper, which is equipped with a number of pulling claws that protrude, are pulled up, and are recessed inward on the inactive side, the drive wheel is fixed to a drive shaft supported within a transmission pipe, The driven wheel is supported by a lifting frame fixed to the aircraft body via the above-mentioned transmission pipe and stay, and the upper cover that covers the front side of the lifting device is pulled up and removably attached to the frame, and then attached above the drive shaft. Attach the buffering rubber of the lifting claw to the transmission pipe via a bracket, and at least the back side of the buffering rubber on the upper part of the lifting device and the back side of the non-operating side of the lifting device are shielded by the lifting frame. This is an attempt to solve the above problem by opening the door without causing any damage.

Operation The lifting device has an open back side of the upper shock absorber rubber that is not blocked by the lifting frame, so that even if straw or mud enters the lifting device through the passage opening of the lifting claws during harvesting work in the field, it will fall and be discharged from this open area into the field. Furthermore, as the lifting device has an open back side on the non-lifting side, the discharge action of the invading mud is further promoted as the lifting claws descend, and mud, straw and other invading materials that have entered the lifting device are prevented from accumulating or being carried around inside the lifting device. Also, as the shock absorber rubber is supported by a transmission pipe fixed to the machine body side, rather than to the cover side,
The transmission of vibrations and noise generated when the lifting claws come into contact with the buffer rubber to the cover side of the lifting device is minimized.

Example 1 is a lifting frame made of metal pipes,
This lifting frame 1 is fixed to the aircraft body (not shown) via a stay 2 and a transmission pipe 3, and this lifting frame 1 serves as a strength member that supports the lifting device A. Reference numeral 4 denotes a drive wheel consisting of a sprocket, which is fixed to the shaft end of a drive shaft 6 supported within the transmission pipe 3 via a metal 5. An upper bracket 3 is attached to the end of the transmission pipe 3.
A and a lower bracket 3b are integrally provided, and the upper end of the lifting frame 1 is fixed to the lower bracket 3b.

Reference numeral 7 denotes a buffering rubber 7 for the lifting pawl, and the buffering rubber 7 is attached to the transmission pipe 3 via the upper bracket 3a. Reference numeral 8 denotes a mounting bracket integral with the lifting frame 1, into which a bolt 9 is screwed into a screw hole (not shown) provided in the mounting bracket 8.

The lifting frame 1 includes at least a driven wheel 1.
Components of the lifting device, such as the lifting inner body of the 0 and lifting pawl, are supported. That is, the driven wheel 10 is pivotally supported by a mounting bracket 11 fixed to the lower end of the lifting frame 1 via a bracket 12 and a bolt 13, and between the driving wheel 4 and the driven wheel 10 is an endless body 14 made of a chain. is being wound. Raising claws 15 are attached to the endless body 14 at regular intervals so that they can be raised and lowered. In addition, the lifting frame 1
On the lifting action side, a lifting inner body 16 of a lifting pawl 15 consisting of a pair of front and rear U-shaped cam guides is integrally fixed to a mounting bracket 17 by means such as welding. 18 is a screw hole.

Reference numeral 19 denotes a top cover that covers the front side of the lifting device A, and this top cover 19 is attached to the lifting frame 1 using mounting bolts 20 via the respective mounting fittings 11 and 17.
It is detachably attached to the.

Incidentally, the upper surface cover 19 is integrally formed with a side surface 19a that covers the movement path of the lifting claw 15 on the non-operating side from the outside and allows the lifting claw 15 to be recessed and held within the upper surface cover 19. Moreover, since the lifting frame 1 itself serves as a strength member of the lifting device A, the back side of the lifting device A, for example, the back side of the lifting pawl movement path on the non-operating side of the lifting device , the upper and lower covers are connected facing each other to form a box-shaped lifting frame that serves as a strength member, and the supporting strength of the lifting device A is sufficiently ensured even without covering it with the lower surface cover as in the conventional case. The posture maintaining function of the lifting claw 15 on the non-lifting side is also not impaired in any way.

Therefore, in the present invention, an upper open part a that is not shielded by the lifting frame 1 etc. is provided at least on the back side of the buffer rubber 7 on the upper part of the lifting device A, where straw waste etc. are particularly likely to accumulate or get wrapped around. At the same time, it is made to communicate with this upper opening part a, and the back side of the non-lifting side located below is also opened without being blocked by the lifting frame 1 or the like.

Note that, on the back side of the lifting device A, other parts except for at least the above-mentioned open portion may be covered by a lifting frame or other components of the lifting device.

In the above configuration, the rotation of the drive shaft 6 causes the drive wheel 4 and the driven wheel 10 to rotate, and the endless body 14 rotates in the direction of the arrow in FIG. 2. Then, on the lifting action side (ascending stroke side) of the endless body 14, the lifting claw 15 is regulated and held in an upright state protruding outward by the raising inner body 16 to perform the lifting action of the grain culm, and the endless body 14 is released from the restrictive action by the raising inner body 16 at the top of the upward stroke, and when moving to the downward stroke, the raising claw 15 comes into contact with the cushioning rubber 7 and rotates to a position recessed into the top cover 19. During the descending process, the lifting claw 15 closes the top cover 19.
The side surface 19a allows the robot to move while maintaining its immersed posture in the cover.

By the way, during the reaping operation, dirt such as mud and straw from the field is removed during the upward movement of the lifting claw 15, causing the lifting device A to
If it enters the inside, it is likely to be carried around inside the lifting device A by the lifting claw 15 and the endless body 14. In particular, the buffer rubber 7 is attached to the upper side of the lifting device A, and the lifting claw 15 is easily carried around inside the lifting device A.
It is placed so that it interferes with the movement trajectory of
Coupled with the fact that the drive shaft 6 is recessed inside the device A, it is easy for straw and other debris to accumulate or get wrapped around the device. is provided with an upper opening part a, and
Since the upper opening part a is connected to the lower side of the lifting device on the non-operating side, the back side of the lifting device is also opened, so mud, straw, etc. that have entered into the lifting device A can be removed from the lifting device. Coupled with the fact that A is arranged in a backward-slanting manner, it is discharged from the upper opening part a by its own weight into the field, and furthermore, it is communicated with this upper opening part a and raised, and the back side of the non-active side The opening provided in the opening further facilitates the discharge of intruding mud, straw, etc. during the downward stroke of the lifting pawl 15 and the endless body 14. Therefore, the straw debris etc. that have entered are prevented from accumulating or wrapping around the upper part of the lifting device A, or being carried around inside the lifting device A forever, and the lifting action of the grain culm is always smooth and smooth. It will definitely be done.

Furthermore, the opening provided on the back side of the lifting device A makes inspection and maintenance of the lifting device A easier, and maintainability is greatly improved.

In addition, since the cushioning rubber 7 is supported by the transmission pipe 3 fixed to the aircraft body side via the upper bracket 3a, instead of to the top cover 19 side, when the lifting pawl 15 comes into contact with the cushioning rubber 7, Propagation of the generated vibrations and noise to the cover 19 side of the triggering device A is suppressed as much as possible.

Effects of the invention As described above, the present invention has an endless body wound between a driving wheel provided at the upper part and a driven wheel provided at the lower part, and the endless body protrudes outward on the side where the grain culm is pulled up.
In a grain culm lifting device for a grain culm reaper, which is equipped with a number of pulling claws recessed inward on the non-lifting side, the driving wheel is fixed to a driving wheel supported in a transmission pipe, and the driving wheel is fixed to a driving wheel supported in a transmission pipe, The driven wheel is supported by a lifting frame fixed to the aircraft body via a pipe and a stay, and the upper cover covering the front side of the lifting device is pulled up and detachably attached to the frame, and further positioned above the drive shaft. Attach the buffer rubber of the lifting pawl to the transmission pipe via a bracket, and
By opening at least the back side of the cushioning rubber on the top of the lifting device and the back side of the non-lifting side without being shielded by the lifting frame, straw waste, mud, etc. can be removed during grain culm lifting work. Even if they enter the hoisting device, these intruding mud, straw, etc. will fall into the field from the upper opening provided on the back side of the cushioning rubber at the top of the hoisting device. This prevents straw debris from accumulating or becoming entangled, and furthermore, the opening on the non-operating side of the lifter allows the intruding mud, straw debris, etc. to be discharged during the descending process of the lifting claw and the endless body. The effect is further enhanced,
The action of raising grain culms can always be carried out smoothly and reliably. Further, due to the presence of the open portion, the bottom cover can be omitted, and maintenance can be further facilitated. In addition, since the cushioning rubber is supported by a transmission pipe fixed to the fuselage rather than the top cover side, the vibration and noise when the lifting claw comes into contact with the cushioning rubber is transmitted to the cover side of the lifting device. This has the effect of suppressing the spread as much as possible.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional plan view of a grain culm lifting device of a grain culm reaper according to the present invention, FIG. 2 is a front view of the lifting device, and FIG. 3 is a side view of the lifting device. In the figure, 1 is a lifting frame, 2 is a stay, 3 is a transmission pipe, 3a is an upper bracket, 3b is a lower bracket, 4 is a drive wheel, 6 is a drive shaft, 7 is a cushioning rubber, 10 is a driven wheel, and 14 is a Endless body, 15 is a lifting claw, 16 is an inner body for raising the lifting claw, 19 is a top cover, 19a is a side surface of the top cover, A is a lifting device for the grain culm, and a is an upper opening part.

Claims (1)

[Scope of utility model registration request] An endless body is wound between a driving wheel provided at the top and a driven wheel provided at the bottom, and the endless body protrudes outward on the lifting side of the grain culm and retracts inward on the non-lifting side. In a grain culm pulling device for a grain culm reaper equipped with a large number of pulling claws, the drive wheel is fixed to a drive shaft supported in a transmission pipe, and fixed to the machine body via the transmission pipe and stay. The driving wheel is supported by the lifting frame, the upper cover covering the front side of the lifting device is lifted and removably attached to the frame, and the cushioning rubber of the lifting pawl is placed above the drive shaft so that the cushioning rubber of the lifting claw is connected to the transmission. A grain culm reaper characterized in that it is attached to a pipe via a bracket and that at least the back side of the cushioning rubber on the upper part of the lifting device and the back side of the non-operating side of the lifting device are opened without being blocked by a frame. The grain culm pulling device of the machine.