JPH051244Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roll baler, and particularly to a roll baler that compresses bound materials such as hay and straw and forms them into a roll bale.

[Prior art] A roll baler compresses and rolls the material to be bound in a bale chamber, forms it into a predetermined cylindrical shape, ties it with a string, and then discharges it outside the machine until it is ready for transportation. This is the work that will be carried out. Among these operations, a mechanism that automatically performs everything from compression molding to tying is proposed as a tying means (for example, ``Japanese Patent Application Laid-Open No. 60-217825
Publication No. 1)).

As shown in FIG. 5, conventional roll balers of this type have a bale chamber a for forming roll bales.
, a tying means b for tying the formed roll bale, and a bale chamber opening/closing means c for discharging the tied bale to the outside of the bale chamber a.

The bale chamber a is divided approximately vertically into a movable part d and a fixed part e, and is partitioned in the radial direction by compression rollers f arranged in parallel. The lower part of the fixed part e is provided with running wheels g and a pick-up device h for supplying bound objects into the bale chamber a, and the upper part thereof pivots the movable part d so that it can be expanded upward. It has a pivot axis i for. Also, both parts d,
A hook j is provided at the lower side wall for holding e in place during bale forming.

The tying means b is provided on the upper part of the fixing part e, and is adapted to appropriately guide the tying string k to the circumferential surface of the formed roll bale and to tighten it as it is wound. A binding activation means l is provided so as to be automatically activated after completion of molding.

The tying activation means l is adapted to sequentially transmit minute movements of the hook j to the tying means b, and sequentially connects the lever member m and the link members n and o. The lower end of the lever member m, which serves as a fulcrum, is the movable part d.
A hook j, which is hooked onto a shaft p of a fixing part e, is pivotally supported by a pin q provided in the middle. When the roll bale reaches a predetermined winding diameter and is minutely deployed and moved by pushing the movable part d, the hook j that moves following this moves the upper end, which is the point of action, to a predetermined position. The binding means b is actuated by swinging by the same amount. Further, a spring r is provided on the opposite side of the lever member m from the hook j,
The hook is designed to be kept in place.

The bale chamber opening/closing means c has a cylinder s installed between both parts d and e, and a stay t stretched between the movable end of the cylinder s and a hook j. The cylinder r is connected to a hydraulic pressure outlet of a tractor (not shown) that pulls and drives the roll baler, and when extended, first moves the stay t to disengage the hook j from the shaft p, and then moves the movable part d. is expanded upward to open the bale chamber a. When the roll bale in the bale chamber a falls due to its own weight, the cylinder s is shortened and moves the movable part d to the fixed part e.
Then, the hook j is relatched and the next binding operation is started.

In this way, constraint is automatically performed following molding.

[Problems to be solved by the invention] By the way, in the above conventional roll baler, after the tying operation is completed, the bale chamber opening/closing means c is driven to completely discharge the roll bale to the outside of the bale chamber a. Then, in order to close veil chamber a,
It was necessary to deploy the movable part d downward.

At this time, the worker either leaves the driver's seat and visually confirms that the roll bale has fallen to the rear and performs the operation to deploy it downwards, or the operator relies entirely on intuition. There was a problem that the process placed a heavy burden on the workers.

Also, when the binding is completed, the veil chamber opening/closing means c
It is also desirable that this be done automatically.

Therefore, the present invention was devised to provide a roll baler that can automatically open and close the bale chamber.

[Means for solving the problems] The present invention includes a bale chamber for forming a roll bale, a tying means for tying the formed roll bale, and a tying means for tying the formed roll bale. a bale chamber opening/closing means for opening and discharging the roll bale to the outside of the bale chamber and closing the bale after completion of discharging; a hydraulic unit provided in the bale chamber for supplying hydraulic pressure for driving the bale chamber opening/closing means; a switching valve provided in the middle of an oil path connecting the hydraulic unit and the bale chamber opening/closing means, and having a timer that operates to supply hydraulic pressure to open the bale chamber and then switches to the hydraulic pressure supply stop side after a predetermined period of time has elapsed; It is equipped with a remote switch that engages with the tying means in the process of terminating the tying and operates the switching valve to the hydraulic pressure supply side.

[Function] The tying means ties the roll bale after it is formed in the bale chamber. The switching valve is actuated by a remote switch when tying is completed, and supplies hydraulic pressure from the hydraulic unit to the bale chamber opening/closing means.
The bale chamber opening/closing means is driven by this hydraulic pressure to open the bale chamber and discharge the rolled bale to the outside of the machine. Then, after a predetermined period of time has elapsed since the opening of the bale chamber, the switching valve switches the oil path to stop supplying hydraulic pressure to the bale chamber opening/closing means, and the bale chamber returns to the closed state.

[Examples] Examples of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a roll baler according to the present invention, which has a bale chamber 1, a tying means 2, a bale chamber opening/closing means 3, and a tying means. 2 is provided with a tying starting means 4 for automatically driving the tying. The bale chamber 1 is divided into a fixed part 5 and a movable part 6, and wheels 7 and a pick-up device 8 are provided at the lower part of the fixed part 5.

The hydraulic unit 9, which is a feature of this invention,
is provided on the outer wall of the fixed part 5, and
A switching valve 10 is provided for adjusting the hydraulic pressure supply.

The hydraulic unit 9 is connected to a transmission 12 provided for rotationally driving a compression roller 11 in the bale chamber 1. The transmission 12 has an input shaft 13 protruding toward a tractor (not shown), and is configured to appropriately convert rotation from the PTO shaft of the tractor.
A portion of the driving force is input to generate a predetermined hydraulic pressure.

The switching valve 10 is a solenoid valve that switches the oil path from the hydraulic unit 9 to the hydraulic pressure supply side when excited, and the switching valve 10 is connected to the power supply circuit for excitation.
A timer (not shown) is provided that turns off the operating switch after a predetermined period of time has elapsed since the operating switch was turned on. That is, the time required for the roll bale B to be discharged out of the bale chamber 1 is set, and the hydraulic unit 9 continues to supply a predetermined hydraulic pressure for this period. Switching valve 10
A hydraulic hose 15 connected to a hydraulic cylinder 14 installed between the fixed part 5 and the movable part 6 is connected to the outlet side of the bale chamber opening/closing means 3.
By supplying hydraulic pressure to the barrel cylinder 14,
The movable part 6 is configured to be expanded upward.

Further, in this embodiment, a remote switch 16 for operating the switching valve 10 is formed and provided so as to engage with the tying means 2 when tying is completed. Its configuration will be explained together with details of the tying means 2 after explaining the veil chamber opening/closing means 3.

As shown in FIG. 2, the hydraulic cylinder 14 is connected to a hook 17 for locking the movable part 6 and the fixed part 5 together. The fixed side of the hook 17 is pivotally supported via a pin 19 in the middle of a lever member 18 that is rotatably supported on the side wall of the fixed part 5.
The movable side is formed to be removably latched to a latching shaft 21 fixed to the movable portion 6 via a latching plate 20 .

On the other hand, the hydraulic cylinder 14 is supported by a bracket 22 that rotatably supports the fixed end thereof, with its rotation range being limited around the axis of a rotating shaft 23 horizontally suspended between the inner walls of the fixed part 5. has been done. That is, the pivot lever 24 is integrally formed with the bracket 22.
is rotatably supported by the rotating shaft 23 at its center, and has one end protruding from the fixing part 5.
The other end supports a hook attachment/detachment rod 27 for attaching and detaching the hook 17. The length of the elongated hole 26 is set to correspond to the attachment and detachment movement of the hook 17, and the restriction pin is set so that when the hydraulic cylinder 14 is shortened, the bracket 22 first rotates and the hook 17 is removed. 25.

Furthermore, the hook 17 of this embodiment is provided with a first switch 28 that engages with its movable end, so that when the hook 17 is once detached from the locking shaft 21 and then relatched, It is configured to turn "ON" and generate a sound from an alarm buzzer (not shown).

Next, the configuration of the binding means 2 will be explained.

As shown in FIG. 1, the tying means 2 is activated by a tying starting means 4. As shown in FIG. The binding starting means 4 is supported by a rotation shaft 29 protruding from the side wall of the fixed part 5, and is connected to the hook 1.
A lever member 18 that pivotally supports 7, and this lever member 18
The L-shaped lever 32 is connected to the upper end 30 which is the point of action of the L-shaped lever 32 by the first connecting rod 31, and this L-shaped lever 32 operates the activation lever 33 which is the tying means 2. It's summery. The lever member 18 prevents slight movement of the hook 17 in a substantially horizontal direction when the roll bale B in the bale chamber 1 is formed to a predetermined winding diameter and is minutely expanded and moved by pushing the movable part 6 from inside. , is adapted to swing in order to convert the amount of movement into a predetermined amount.

A first spring 34 is provided on the opposite side of the lever member 18 from the hook 17 to lock the hook 17 to the bale chamber closing side. A restriction piece 35 is stretched so as to face this.

As shown in FIGS. 3 and 4, the binding means 2
The string guide arm 38 holds the tying string 36 at its distal end 37 so as to be freely drawn out, and the string guide arm 3
a crank mechanism 39 for swinging the tying string 8 in synchronization with the supply (advancement) of the tying string 36; and a locking lever 4 that engages with the tying starting means 4 and the crank mechanism 39.
0, 41, 42, and locking levers 40, 41, 42,
It consists of a crank mechanism 39 and springs 43, 44, 45 for appropriately driving the string guide arm 38. By the swinging of the string guide arm 38, the tying string 36 is connected to the roll bale B and the compression roller 11.
The roll bale B is appropriately held between the roll bale B and the roll bale B as it is wound.

The proximal end of the string guide arm 38 is swingably supported by a swing shaft 48 that projects from a horizontal plate 46 extending between the side walls of the fixed part 5 via a bracket 47. This horizontal plate 46 is provided so as to face the bale chamber 1 through the gap between the compression rollers 11 arranged in parallel. A hook member 49 is provided at the proximal end of the string guide arm 38 . A second spring 43 whose one end is fixed to a bolt member 50 provided on the side wall is engaged with this hook member 49. The second spring 43 is capable of swinging from a starting position P in which the tip end 37 of the string guide arm 38 is located diagonally above the swing shaft 48 when viewed from the running direction A to a position Q in which it becomes horizontal. It is formed with such a biasing force.

One end of the tying string 36 is suspended into the bale chamber 1, and the other end is sequentially connected to a string supply source (not shown) by a roller 51 provided at the tip 37, a direction change roller 52, 53, a pulley 54, and a fourth roller 55.

The crank mechanism 39 is configured to convert the rotation of the pulley 54 driven by the letting out of the tying string 36 into swinging motion of the string guide arm 38.
That is, on the rotating side of the crank mechanism 39, the pulley 5
4 on the input side and for changing the speed of the rotation appropriately; a crankshaft 57 rotatably supported on the output side of the reduction box 56; and a rotation integrally formed with the crankshaft 57. A moving lever 58 is provided. The rotation of the rotary lever 58 is converted into a substantially horizontal backward movement of the reciprocating arm 59 supported at its end, and furthermore, the other end of the reciprocating arm 59 is connected to the string guide arm 38. It is pivoted to a shaft 61 fixed to the arm side part 60, and is adapted to be converted into rocking motion. The reciprocating arm 59 is formed to reciprocate once when the crankshaft 57 rotates once, and to appropriately guide the swinging motion of the string guide arm 38.

The crankshaft 39 is provided with a one-way clutch (not shown) configured to transmit only rotation from the output side.

Further, a third spring 44 is provided so as to be aligned with the reciprocating arm 59. third spring 4
4 has a biasing force to raise the string guide arm 38 from the substantially horizontal position Q, and is located below the shaft 61 fixed to the string guide arm 38 and the crankshaft 57 to provide a rotating shaft to the reduction box 56. It is stretched between the first locking lever 40 supported via the first locking lever 62 . That is, the biasing force is increased or decreased by moving the first locking lever 40 and the reciprocating arm 59.

The first locking lever 40 reduces the biasing force of the third spring 44 in the rotation range of the crankshaft 57 in which the string guide arm 38 swings to the horizontal position Q, and thereafter increases the biasing force. It is designed to rotate. That is, the first locking lever 40 has
A fourth spring 45 is provided on the opposite side of the third spring 44, and a locking portion 63 for locking the rotation thereof is further formed. This locking portion 63 is connected to a second locking lever 41 that is pushed by a cam 64 that is integrally formed with the crankshaft 57.
are becoming interlocked. When the third locking lever 42 is fixed to the starting lever 33 and pushes the second locking lever 41, the first locking lever 4
0 is released and tilts toward the string guide arm 38, the tension of the third spring 44 is reduced, and the one-way clutch provided on the crankshaft 57 and the second spring 43 cause the string guide arm to tilt toward the string guide arm 38. 38 is adapted to swing in the horizontal direction Q. This engagement position is adjusted so that each spring 43, 44, 45 is balanced and the string guide arm 38 is maintained at a predetermined starting position P (tying end position). Further, the third locking lever 42 is disengaged from the second locking lever 41 when it comes into contact with the tip of the rotary lever 58 at the end of the swinging of the string guide arm 38 and rotates. A notch 65 is formed for this purpose. This notch 65 is adapted to come into contact with the engine at the time of starting, thereby causing the second locking lever 41 to separate from the first locking lever 40.

As shown in FIG. 4, a string cutting portion 66 is provided approximately at a position where the tying string 36 is suspended when tying is completed. The string cutting section 66 includes a bracket 67 fixed to the horizontal plate 46 and a blade 6 attached to the bracket 67.
It consists of 8. The bracket 67 is connected to the string guide arm 38.
When swinging from horizontal Q to standing R, the tying string 36
The blade 68 is held so as to cut this when returning from the standing position R to the starting position P.

The remote switch 16 is attached to the deceleration box 56 so as to be operated by the cam 64, and is configured to engage when the string guide arm 38 reaches the end of its swing.

In addition, in this embodiment, the second switch 70 for setting off the buzzer during rocking is connected to the horizontal plate 46.
The tying cord 36 is provided at one end of the tying cord 36 and is held at one end so as to be engaged when the tying cord 36 having an appropriate tension passes through the tying cord 36.

Next, the operation of this embodiment will be explained in accordance with the order of work progress.

The bound objects introduced into the bale chamber 1 by the pick-up device 8 are gradually formed into a roll bale B while being wound and compressed by the compression rollers 11. When the winding diameter reaches a predetermined value, the pressure generated in the radial direction pushes the movable part 6 and causes it to move minutely. This movement is performed by the hook 17, lever member 18, L
It is sequentially transmitted to the shape lever 32 and moves the activation lever 33 upward. The tying means 2 is now started and ties the formed roll bale B. At the end of the process, the bale chamber opening/closing means 3 is activated. That is, the switching valve 10, which has been switched to the hydraulic pressure supply side by the remote switch 16, guides the hydraulic pressure within the hydraulic unit 9 to the hydraulic cylinder 14. The hydraulic cylinder 14 is shortened, and the bracket 22 is first rotated to move the hook attachment/detachment rod 27, and the hook 17 that has been locking the fixed part 5 and the movable part 6 is released from the locking shaft 21. Subsequently, the hydraulic cylinder 14 deploys the movable part 6 upward to cause the tied roll bale B in the bale chamber 1 to fall under its own weight and be discharged to the outside of the machine.

The timer started at the same time as the switching valve 10 is set to a time that sufficiently exceeds the time required for this discharge, and after the roll bale B is discharged, the switching valve 10 is switched to the hydraulic stop side. Hydraulic cylinder 1
The hydraulic pressure in the movable part 4 is reduced to allow the movable part 6 to rotate downward under its own weight, and the movable part 6 is extended. When the movable part 6 is joined to the fixed part 5, the hook 17 locks both 5 and 6 again, making it possible to move on to the next binding operation.

Next, the action of the binding means 2 will be explained.

The string guide arm 38 is in the initial position P as shown in FIG. When the starting lever 33 is moved upward, the third locking lever 42 engages the second locking lever 41.
, and is pushed to release the engagement with the first locking lever 40 . The first locking lever 40 tilts toward the string guide arm 38 and weakens the biasing force of the third spring 44. This breaks the balance with the second spring 43, and the string guide arm 38 swings to the horizontal position Q due to the tensile force of the second spring 43. At this time, the crankshaft 57 uses the one-way clutch to move the reciprocating arm 59 regardless of the output side. Then, the tying string 36 hanging down from the tip 37 of the string guide arm 38 is held between the compression roller 11 and the roll bale B, and as it is being wound, the tying string 36 is tied tightly to the roll bale B as it is wound. They are rolled out in sequence. The pulley 54 rotates due to this feeding,
The crank mechanism 39 is driven. The string guide arm 38, which was in the horizontal position Q, is erected by the rotation of the crankshaft 57 and swings to a position R beyond the vertical.

Thereafter, the cam 64 and the end of the rotating lever 58 come into contact with the locking levers 41 and 42, respectively. The second locking lever 41 is now engaged to restrain the first locking lever 40. The third spring 44 restores the tension that dampens the swinging of the string guide arm 38 from the substantially vertical position R in the opposite direction. The string guide arm 38 swings to a tying end position P, which is a position where the second spring 43 and the third spring 44 are balanced. In the middle of this, the tying string 36 is cut, the pulley 54 is stopped, and the crank mechanism 39 is also stopped. Then, the locking levers 40, 41, 42 are engaged with each other,
The string guide arm 38 is held at the starting position P.

In this way, the hydraulic unit 9 is equipped with the switching valve 10 having a timer, and the cam 6 of the binding means 2 is
Since a remote switch 16 that engages with the roll baler is provided, the operator simply stops and starts the roll baler, and the roll bale is automatically formed, tied, discharged, and returned to the bale chamber. The burden is greatly reduced and a series of tasks can be accomplished reliably and quickly.

The timer and remote switch 16 have a simple structure that does not require a special control device, and can be easily applied to a roll baler having a hydraulic unit 9 and a tying means 2.

Furthermore, since the hydraulic unit 9 is provided in the fixed part 5 of the bale chamber 1, it can be used even in small tractors etc. that are not equipped with a hydraulic pressure extraction device, making the roll baler highly versatile.

Although the remote switch is engaged with the cam, it may be activated, for example, by the cord cutting operation of the cutting section, as long as the cord guide arm is in the final stage of swinging. In addition, the drive method and model of the hydraulic unit are as follows:
Not limited to this illustrated example, restraining means,
The same can be said of the binding activation means.

[Effects of the Invention] In summary, the present invention provides the following excellent effects.

A bale chamber for forming a roll bale, a tying means for tying the formed roll bale, a bale chamber opening/closing means for opening and closing the bale chamber, and a hydraulic pressure for supplying hydraulic pressure for driving the bale chamber opening/closing means. unit, a switching valve having a timer that switches to the hydraulic pressure supply stop side after a predetermined period of time has elapsed from hydraulic pressure supply, and a remote switch that engages with the tying means in the process of terminating the binding and operates the switching valve to the hydraulic pressure supply side. With this, it has an extremely versatile and simple configuration that automatically performs everything from forming the roll bale to tying it up, discharging it, and returning it to the bale chamber, greatly reducing the burden on the operator. A series of tasks can be accomplished reliably and quickly.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the roll baler according to the present invention, FIG. 2 is a side view showing the opposite side, FIGS. 3 and 4 are perspective views showing the binding means, and FIG. The figure is a side view showing a conventional roll baler. In the figure, 1 is a bale chamber, 2 is a tying means, 3 is a bale chamber opening/closing means, 9 is a hydraulic unit, 10 is a switching valve, 16 is a remote switch, and B is a roll bale.

Claims (1)

[Scope of utility model registration request] a hydraulic unit which is provided in the bale chamber and supplies hydraulic pressure for driving the bale chamber opening and closing means; a switching valve which is provided in an oil passage connecting the hydraulic unit and the bale chamber opening and closing means and which has a timer which switches the hydraulic pressure supply side to a hydraulic pressure supply stop side a predetermined time after the hydraulic pressure supply side is operated to open the bale chamber; and a remote switch which engages with the tying means when the tying is completed to operate the switching valve to the hydraulic pressure supply side.