JPH0398507A - Threshing net of thresher - Google Patents

Abstract

PURPOSE:To enable to attach or detach a threshing net in a safe and simple operation by disposing a handle at the pulling-out end portion of a threshing net frame, the handle being employed to push out or pull engaging pins for attaching or detaching the threshing net frame to a thresher frame. CONSTITUTION:When a threshing net 4 is attached, a threshing cover is released upwardly and the lower end of a threshing net frame 13 is faced to the upper end of a net frame rail 12. The threshing net frame 13 is subsequently pushed in along the net frame rail 12. When engaging pins reach the upper end of the net frame rail 12, a handle 16 is pulled and the threshing net frame is further pushed into in a state which the engaging pins are pulled inwardly. The handle 16 is subsequently released and the engaging pins are outwardly pushed out with a plate spring to engage with engaging holes at positions coincident with the engaging holes, thereby fixing the attaching position of the threshing net frame 13.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a threshing net for a threshing machine, and can be used for threshing machines such as harvesters and combines.

(Prior Art and Problems to be Solved by the Invention) A threshing net stretched along the lower peripheral surface of the threshing chamber can be installed by providing a threshing net frame around the periphery and being inserted into and removed from the threshing machine frame. Attach and detach the threshing net frame.

However, the threshing net has a considerable width because it extends in the front and back direction of the threshing room, and the front and rear threshing net frames were fixed to the threshing machine frame by tightening bolts, etc., but it was cumbersome to operate. Hands could be inserted into the threshing chamber, which was dangerous.

This invention eliminates such defects and allows the threshing net frame and the threshing machine frame to be connected by operating a handle such as a lever. This makes it simple and easy to engage and disengage the retaining pin between the two.

(Means for Solving the Problems) The present invention provides an engaging pin provided on the threshing net frame at the pull-out end of the threshing net frame, which is fitted into the threshing machine frame in a stretched manner so as to be freely pulled out. appears and engages with the thresher frame,
The threshing net structure of the thresher is provided with a handle for releasing the grain.

(Function) To attach and detach the threshing net, operate the handle provided at the drawer end of the threshing net frame to retract the engagement pin,
Disengage the thresher frame. In this state, the threshing net frame is inserted into or removed from the threshing machine frame to be attached to or removed from a predetermined position.

(Effects of the Invention) Since the engaging pin is moved in and out using the handle provided at the pull-out end of the threshing net frame, it is not necessary to insert the hand deep into the threshing chamber regardless of the position of the engaging pin. The threshing net can be attached and detached safely and with simple operation. Furthermore, the threshing net frame can be pulled out by operating the handle, and the engaging pin and the threshing net frame can be easily pulled out while being held in the hand.

(Example) In the illustrated example, the threshing device is provided with a threshing net 4 arranged in an arc across a machine frame 1 made of sheet metal, a threshing cover 5 that can be opened and closed on the upper side, and a threshing cover 5 that can be opened and closed on the upper side. A grain culm transfer device consisting of a grain culm transfer chain 6 and a clamping rod 7 extending in the front-rear direction is provided, and the stock part of the grain culm is threshed while being supplied to a threshing room 8 while being clamped and transferred. Further, below the threshing room 8, there are a swinging sorting shelf 9 that receives threshed grains leaking from the threshing net 4 and sorts them by swinging, and a sorting air passage that carries out wind sorting using the sorting air generated by the air pressure 3TLO. has been established.

A net frame rail 2 having an arcuate cross-section and a negative cross section is fixed to the threshing machine frame 1 at the front and rear of the threshing room 8 along the front and rear edges of the threshing net 4. It is formed in an arc shape from one side to the upper position on the opposite side.

The threshing/m4 is provided with threshing rope frames 13 that fit and slide freely along the arcuate mesh frame rails 12 at the front and rear.

A gripping bracket 15 is provided at the front and back center on the pull-out end side of the upper side 14 of the threshing net frame 13, and a handle 16 that can be freely moved in and out is provided inside the gripping bracket 15. By pulling 16, the engagement pin 17 can be retracted. An engaging pin 17 is provided on the side of the threshing net 4 of the threshing net frame 13, and is movable in the front-back direction and is connected and tensioned by a front-back leaf spring 18. 17 is tensioned in the direction of protrusion. The handle 1 is attached to the front and rear center of this leaf spring l8.
6 by a rod 19, and by pulling the handle 16 against the tension force of the leaf spring 18, the leaf spring 18
By bending the front and rear engagement pins 17 in a dogleg shape,
can be retracted. 20 is a boss that fits and supports the rod 19.

An engagement hole 21 into which the engagement pin 17 engages is formed at the upper end of the net frame rail 12, and the position where the engagement pin 7 engages is set as the attachment position of the threshing net 4.

While the handling cylinder 3 is being rotated in the threshing chamber 8, the stock portion of the grain culm is supplied to the front end of the grain culm transfer chain 6 and is held between the grain culm transfer chain 6 and the clamping rod 7, and then the grain culm is transferred to the threshing chamber. 8 is fed to the threshing net 4
The threshed grains that are threshed between the threshing chamber 44 and the threshing chamber 8, and the straw waste discharged from the rear end of the threshing chamber 8 are collected on the lower swing sorting shelf 9. They are received and sorted while being oscillated and transferred.

To attach and detach the threshing net 4, open the threshing cover 5 upward, expose the lower end of the threshing net frame 13 to the upper end of the net frame rail 12, and then thresh along the net frame rail 12. Push in the mesh frame 13. When the engaging pins 17 reach the upper end of the mesh frame rail 12, pull the handle l6 and remove these engaging pins 17.
Pull it inward and push it in further. At this time, if the handle 16 is released, the engagement pin 17 pressed outward by the leaf spring 18 will be at a position aligned with the engagement hole 21.
By engaging with these two engagement holes, the attachment position of the threshing net frame ↓3 is fixed.

Also, when removing this threshing net frame 13, use the handle l6.
When the holding bracket 15 is pulled upward, the engagement pin 17 is removed from the engagement hole 2, and the threshing net frame 13 is guided by the net frame rail l2 and removed upward.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front sectional view, FIG. 2 is a plan view thereof, and FIG. 3 is a partial side sectional view. (Explanation of symbols) 4 Threshing net 11 Shelling machine frame 12 Net frame rail 13 Threshing net frame handle engagement hole 17 Engagement pin

Claims (1)

[Claims] A threshing net is stretched and fitted to the threshing machine frame so that it can be freely pulled out, and an engaging pin provided on the threshing net frame is engaged with the threshing machine frame by engaging with the threshing machine frame by protruding and retracting an engagement pin provided on the threshing net frame at the pull-out end portion of the threshing net frame. A threshing net for a thresher that is equipped with a detachable handle.