JPS62275616A - String guide apparatus of roll baler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a string guide device for spirally wrapping a string around the outer periphery of a bale compressed into a cylindrical shape.

q Conventional technology The string guide device in a conventional roll baler.

It is structured as follows.

An input port for inputting a string into the bale chamber is provided above the bale chamber, and a single string guide arm is disposed and pivoted parallel to the input port. When the IJJ mechanism of the string guide device is actuated, the lock of the string guide arm is released, the string guide arm rotates downward, and the string support body provided at the tip of the string guide arm is located near the outer periphery of the bale and holds the string. The strings attached to the body are thrown into the veil chamber from the evening port, gripped by the outer circumference of the veil, and transported to the veil solstice. A pulley is provided at the input part of the transmission device which is connected to the string guide arm through the connecting rod, and the string stored in the string storage section is held by the string clamping body through the above-mentioned boob, and the end thereof is removed from the string holding section. It is being sawed down.

When the string is gripped by the bale and transferred into the bale chamber, the pulley that engages with the string rotates to operate the transmission device, and the string guide arm linked to the transmission device rotates upward, causing the string clamping body to move left and right inside the string input port. It moved and a string was wound spirally around the outer circumference of the bale.

Problems with the conventional technology However, in the conventional technology, there is only one string guide arm, so there are many strings to wrap around the outer circumference of the bale in order to maintain a stable shape even after the bale is released from the bale chamber to the outside of the aircraft. It is a stone that takes time. Further, the transmission device 1 is actuated by the movement of the string, but since the speed of movement of the string is fast, deceleration is required within the transmission device, and a planetary gear reducer or a ratchet speed reducer is used as a means for this purpose. However, these reducers have large volumes, complex structures, and are expensive. In addition, when the starting mechanism is activated, the string guide arm rotates downward, but this is due to its own weight, and due to variations in the precision of the parts that make up these arms, the downward rotation time is not constant, and the time it takes to finish winding the string varies. This resulted in discrepancies.

B0 Structure of the Invention A. Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides two string guide arms that are pivotally supported in parallel to the string input slot. The string guide arms are configured to rotate in opposite directions in conjunction with a transmission device, and a worm reducer is used for the transmission device, and the string guide arm is rotated below the pivot portion of the string guide arm. A tension spring is provided to force the dynamic downward action, a crank is provided on the output shaft of the transmission device, and a one-way clutch is provided at the connection between the output shaft and the crank.

First, Example 1 is a roll baler. 2 is a pick-up device. 3
is the mission, and 3A is the human power axis. 4 is a wheel. In the 5-way bale chamber, 5A is an opening and 5B is a string input port. 6 is a roller. 7 is a top link engagement plate and %8 is a lower link bin. 9 is the front part of the bale chamber, and 10 is the rear part of the bale chamber. 11 is a hydraulic cylinder. 12 is a string guide device. Reference numerals 20 and 21 denote string guide arms, on which string holding parts 20A and 21A are fixed, and guide rollers 20B and 21 are attached to shafts protruding from the string guide arms.
B is pivoted.

Below the string guide arm is a shaft 22A fixed to a plate 22 disposed between both side walls of the front section 9 of the bale chamber.

It is pivotally supported by 22B. A shaft 20C is fixed to the string guide arm 20, and one end of the first connecting rod 23 is pivotally supported. 81
! /The other end of the connecting rod 23 is pivotally supported by a shaft 24B protruding from the arm 24A of the first crank 24. A projecting piece 21C is provided on the side surface of the string guide arm 21, and a shaft 21 is attached to the projecting piece 21C.
D is provided protrudingly. 25 is the first connecting rod and one end is the shaft 21
L), and the other end is pivotally supported on a shaft 26A protruding from the other end of an arm 26 fixed to a shaft 24B.

The shaft 26A is arranged symmetrically with the shaft 24B with respect to the center of the crank/crank 24. A worm reducer 27 is fixed to one side wall of the front part 9 of the bale chamber, and a pulley 40 is disposed on the human power shaft 27A. A support plate 28 is fastened to the worm reducer 27, and a shaft 28A, a shaft 28B, a shaft 28C, and a shaft 28D are provided protrudingly. A first lever 29 is pivotally attached to the shaft 28A, and a hook 30 is pivotally attached to the shaft 28B.

A coil/roller 31 is pivotally attached to the shaft 28C, and a first roller 31 is pivotally attached to the shaft 28D. The first lever 29 is provided with a protrusion 29A that engages with the notch 30A of the hook 60. A shaft 60B projects from the hook 30, and a first tension spring 34 is hooked between the link 36 that engages with the shaft 30B and the shaft 20C. A first crank 36 is pivotally supported on a shaft 35 protruding outward from the IJIIM wall. A second lever 37 is pivotally supported at one end of the first crank 36, and an operating rod 38 is engaged with the other end. The second lever 67 is provided with a notch 37A that engages with the first lever 29. Projection piece 29B that engages with notch 37A in first lever 29
is protruding. A one-way clutch is built into the engaging portion of the first crank 24 disposed on the output shaft of the worm reducer 27, while a cam 24C that operates the coil/lever 29 is protruded from the outer cylinder. . Hook 30 and Collever 37
A first tension spring 34 is hooked to the arm of the user. String guide arm 2
A third tension spring 41 is hooked to an L-shaped protrusion 21F protruding below the pivot portion 1 and a protrusion 9A protruding inside the side wall. A shaft 42 is fixed to the plate body 22, and a 30th roller 43 is pivotally supported on the shaft. The first roller 31 is pivotally supported on a shaft fixed to a protruding piece 44 protruding outward from the side wall. 46
The lace oa7 is a cutting device, and 47A is a cutting blade. A straw tensioning spring (not shown) is stretched between the first lever 29 and the protrusion projecting downward from the support plate 28. The roll baler 1 connected to the three-point link of the working tractor is connected to the universal joint from the tractor output shaft. The rotational power is transmitted to the human power shaft 3A of the mission 3, and the roller 6 and the picking device rIt2 are driven and rotated by appropriate means. The harvest picked up by the picking device #It2 is transferred to the bale chamber 5 through the opening 5A and formed into a cylindrical compressed bale. When the operator presses the operating rod 38, the first crank 36 rotates and moves the second lever 37 upward.
Since the notch 37A contacts the protrusion 29B of the first lever 29 and rises slowly, the first lever 29 rotates upward, and the protrusion 29A of the first lever 29 and the cutout 30A of the hook 30 are engaged. When the string guide arm 2 is released, the one-way clutch built in the first crank 24 and the third tension spring 41 act to
0.21, the lower end of the lower discharge rotating cord 46 is introduced into the bale chamber 5 from the assembly entrance 5B, gripped by the bale, and wound around the outer circumference of the bale. The string is passed from the string bundle storage box (not shown) to the first roller 31, pulley 40. As the string 46 hanging downward from the holding portion 20A moves via the first roller 32, the first roller 31, and the guide roller 20B, the pulley 40 rotates, and the associated first crank 24 rotates. The string guide arm 20.21 that is linked with the rotation of the seventh crank 24 is the shaft 22A.

When rotated about 22B, the strings 46, 46 are wound helically around the outer circumference of the bail. When the winding of the string approaches the end, the cam 24C protruding from the outer cylinder of the crank 24 comes into contact with the first lever 29, causing the first L/par' 19 to rotate upward and hooking up with the protrusion 29A of the first lever 29. 30 notches 3
When the cam 24C and the first lever 29 are released from contact with each other by setting the 0A into an engageable state, the notch 30A and the protrusion 29A are engaged. Further, when the crank 24 rotates, the string 46 is cut by the cutting blade 47A, the rotation of the pulley 40 is stopped, and the string guide arms 20 and 21 stop rotating. The string guide arm 20.21 is maintained in the stopped position by the action of the one-way clutch and the first tension spring 64.

Effects of C0 invention Since the present invention is configured as described above, it has the following effects.

B. When the operation rod is actuated, the locking of the string guide arm is released and the tensile force of the first tension spring is released.The tension of the third tension spring and the action of the one-way clutch built into the first crank are used in a short time. And the left and right string guide arms are forcibly rotated and lowered,
Since the string winding not only starts but also rotates and descends in a fixed period of time, the time until the string winding ends is constant.

Since the opening and string guide arms are placed on the left and right sides, each string guide arm only has to operate in an area that bisects the outer circumference of the bale, and the time to wrap the string around the bale's outer circumference can be cut in half, which is shorter than before. The work efficiency is improved because the string winding is completed in 1 step. (C) The transmission device of the string guide arm uses a worm reducer, which has fewer components and occupies less space than conventional transmission devices, so it can be constructed at low cost and is easy to maintain. In addition, the roll baler can be manufactured simply because it occupies less space.

Snake: Each string guide arm uses a special bundle cord, so
There is no need to replenish the cord for about twice as long as in the past, and the number of times the cord is replenished can be reduced, reducing work interruption time for replenishing the cord and improving work efficiency.

As described above, the present invention improves work efficiency.

Moreover, it is a string guide device that can provide an inexpensive and simple roll baler that is easy to maintain and manage.

(Brief explanation of the drawings: Figure 1 is an overall side view, and Figures 1 and 3 are enlarged perspective views of essential parts.

5 B 11. ,,,assembly entrance,20,21,,,
,,, string guide arm, 240. ．． 0. 1st crank, 27
, , , −, Worm reducer.

Claims (1)

[Claims] Two string guide arms are disposed in parallel with the string input port and pivotably supported, and the string guide arms are linked with a transmission device so that each string guide arm rotates in opposite directions to the transmission device. A worm reducer is used for this purpose, and a tension spring is provided below the pivot point of the string guide arm to force the string guide arm to rotate and descend.A crank is provided on the output shaft of the transmission device, and the output shaft and crank A string guide device for a roll baler, characterized in that a one-way clutch is disposed at the connection part of the roll baler.