JPH072593B2 - Bale loader - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bale loader for carrying, loading, stacking, unloading roll bales (hereinafter simply referred to as “veils”) and the like.

(Prior Art) A conventional bale loader of this type is called a bale hawk in which a tine is projected forward on both sides of the lower end of a rectangular frame provided with a vertical crosspiece as described in Japanese Utility Model Publication No. 61-9549. The tip working device is formed and attached to the tip of the lift arm of a general front loader.

Then, after moving the tractor forward to pierce the tine of the bale hawk into the bale, the bale is lifted to carry, load, pile up, and unload the bale.

(Problems to be Solved by the Invention) In the above-mentioned conventional bale loader, (1) a universal front loader used for various purposes is used, and the tip working device of the balehawk is attached to the tip of the lift arm. (A) The lifting capacity of the bail is insufficient due to the long lift arm.

(B) The tip working unit projects in front of the tractor, and the load on the front wheels of the tractor is large, and the stability of the airframe during lifting or transportation of the bale is poor.

(2) Since it is necessary to hit the bale once and insert the tines, it is inefficient and dangerous.

(3) When transporting the bale, the driver needs to lift the lift arm of the front loader to look forward, but at that time, the aircraft becomes unstable, and there is a risk of falling or the like.

(4) Since the tines are inserted into the bail, the veil may come off the tine, and may drop during traveling.

(5) When stacking the bale for storage, the bale cannot be lifted high, and the stacking limit is three.

(6) When the tines are removed from the bale after the bale is piled up, the upper part of the piled bale is pulled to the front, and the piled bale may be collapsed.

There is a problem in such points.

(Means for Solving Problems) Therefore, in order to solve the above problems, the present invention (1) forms the lift arm (1) of the loader (A) appropriately short, and works the tip of the arm. Position the frame (2) near the front of the tractor (B).

(2) Loader (A) mount (3) and work frame
It is connected to (2) by parallel link mechanisms (a) and (b), and the working frame (2) is moved up and down in parallel.

(3) The work frame (2) is provided with an undulating arm (4), and the base of the bending arm (5) is attached to the working frame (2) so that the base can be appropriately rotated and fixed at that position, and the tip of the bending arm (5). The claws (6) and (7) on both sides are opened and closed by the opening and closing cylinder (8) and the glove (D) for gripping the bale (C) and the like is attached to the piece.

(Operation) (1) (a) If the bending arm (5) is erected and its tip piece is in a horizontal state, the glove (D) faces downward, so that the outer periphery of the laterally placed bale (C) is fixed. You can grab it with Grab (D).

(B) Rotate the bending arm (5) 180 ° from the above state and lay it down to make the tip piece vertical so that the glove (D) is at a low position and faces forward, so it is placed on the ground. The small outer bale (C) and the outer periphery of the vertically placed bale (C) can be grabbed by the glove (D).

(2) (a) By raising the lift arm (1), the bale (C) is lifted in parallel.

(B) When the undulating arm (4) is lifted to stand up, the bail (C) is lifted and the vertical and horizontal directions thereof are changed.

(Embodiment) The structure of one embodiment of the present invention shown in FIGS. 1 to 11 will be described. (B) shows a tractor, (A) shows a bale loader detachably attached to the tractor (B),
(3) is the mounts on both sides of the mount, (1) is the lift arms on both sides, the base of which is pivotally attached to the upper part of the mount (3) by pins (9) and the lower middle part and the lower part of the mount (3). And are connected by a lift cylinder (10). (11) A crank whose lower end is pivotally attached to the upper middle part of the lift arm (1) by a pin (12), and the middle part of the crank is connected to the upper end part of the mount (3) by a link (13). (3), the lift arm (1), the crank (11) and the link (13) form a parallel link mechanism (a). (2) is a work frame in the shape of a rectangular frame, and the tip of the lift arm (1) is pivotally attached to the middle of the side frame by a pin (14) to link the upper part and the upper part of the crank (11) (15). ), The crank (11), the lift arm (1), the work frame (2) , and the link (15) form a parallel link mechanism (b). (4) is an undulating arm made of a pipe, the base of which is pivotally attached to the upper part of the central mast (16) of the work frame (2) by a pin (17), and a pin hole (18) is bored in the middle part of the arm. And the lower part of the mast (16) are connected by a hoisting cylinder (19). (5) is a V-shaped bent arm made of a pipe, and an eyebolt (21) fitted in the center hole of the base end portion (20) is fitted to a pin (17) so that the base piece is inside the undulating arm (4). Rotatably fitted to
A pin hole (18) for the undulating arm (4) is provided in the middle of the base piece.
, And pin holes (23) and (24) at the middle portion and the tip portion of the tip piece, respectively.
Then, the pin (25) is detachably inserted into the pin holes (18) and (22) to fix the bending arm (5) to the undulating arm (4), and the tip of the bending arm (5). The piece faces forward and becomes horizontal.

(D) shows an opening / closing grab which is attached to the bending arm (5), and (26) is a frame of the glove (D), in which a metal mold (27) is fitted and fixed to the lower center part of the frame, and the metal mold (27) is fixed. Make pin holes (28) on both sides of both side plates. (29) is a V-shaped one-sided arm rod when viewed from the front, and the middle bent portion is a frame (2
6) is pivotally attached to the tip of one side by a shaft rod (30), and a hawk-like claw (6) directed to the other side is fixed to the lower end. (31) is the other side arm rod as viewed from the front, and the middle bent portion thereof is pivotally attached to the other end of the frame (26) by the shaft rod (32), and the fork is directed toward the lower end toward one side. Fix the claw (7). (33) is a connecting rod whose opening side is widened, and both ends of the connecting rod are fixed to the shaft rods (34) and (35) at the upper ends of the both-sided arm rods (29) and (31). Further, the shaft rods (32) and (34) are connected by the opening / closing cylinder (8), so that the shape die (27) is fitted to the tip piece of the bending arm (5) and their pin holes are formed. Insert the pin (36) into (28), (23) and (24) respectively, and attach the glove (D) to the bending arm (5).

(E) shows a tine device which is provided on both sides of the lower end of the work frame (2) so that it can be undulated, and (37) shows a U-shaped base fitted and fixed to both sides of the lower frame (38) of the work frame (2). With gold, a laterally long hole (39) and a pin hole (40) are formed in the upper piece, and a pin hole (41) is formed in the middle portion of the front piece. (42) is a "shaped tine holder, which has a pin hole (4
3) has a pin hole (44) in the middle thereof, and the base of the tine (46) is detachably inserted and fixed to the vertical cylindrical body (45) fixed between the vertical pieces. Therefore, the tine holder (42) is fitted in the base metal (37), and the long hole (39) and the pin hole are provided with the pin (47) and the pin holes (40) and (44) with the pin (48). Each of them is removably inserted and fixed, and the tines (46) are fixed in a standing state along the front of the work frame (2) .

Although the number of the tines (46) is two in this embodiment, three or more of the tines (46) may be provided so that the tines (46) have a hawk shape.

Although not shown, the lift cylinder (10), the hoisting cylinder (19), and the opening / closing cylinder (8) are connected to the pressure oil generator of the tractor (B) via a switching valve by hoses.

(C) is a roll bale obtained by bundling hay with a roll baler.

In FIG. 11, (49) is a shaped hanging rod, and (50) is a pin for attaching one end of the hanging rod (49).

Next, the operation will be described.

(1) When the lift cylinder (10) is extended from the state where the work frame (2 ) with grab (D) is lowered as shown by the thick line in FIG. 1, the lift arm (1) moves the pin (9). A work frame that rotates upwards as a fulcrum and has a grab (D) with parallel link mechanisms (a) and (b).
(2) rises in parallel as shown by the thin line in FIG. On the other hand, when the lift cylinder (10) is shortened from the above state, the work frame (2) with glove (D ) is lowered in parallel by operating in the opposite manner.

(2) As shown by the thin line in FIG. 1, if the hoisting arm (4) with the bending arm (5) is laid down and the glove (D) is oriented downward, the hoisting cylinder (19) is extended to bend the arm. The undulating arm (4) with the arm (5) rotates upward with the pin (17) as a fulcrum, and the undulating arm (4) with the bending arm (5) stands up and grabs (D) as shown by a chain line in FIG. ) Faces forward. On the other hand, when the undulating cylinder (19) is shortened from the above state, it operates in the opposite manner to the above, and the undulating arm (4) with the bending arm (5) falls down to grab (D) as shown by the thin line in FIG. Turns downwards.

(3) As shown by the solid line in FIG. 3, when the opening / closing cylinder (8) is extended from the state where the claws (6) and (7) of the glove (D) are opened, the one-sided arm rod (29) is At the same time as rotating in the clockwise direction with the shaft rod (30) as a fulcrum, the one side arm rod (29) passes through the shaft rod (34), the connecting rod (33), the shaft rod (35) and the other arm rod (31). Rotates counterclockwise around the shaft rod (32) as a fulcrum, and the arm rods (29) and (31) are closed as shown by the chain line in FIG. 3, and their claws (6) and (7) are bailed (C). ) And grab the veil (C) with the glove (D). On the other hand, when the opening / closing cylinder (8) is shortened from the above state, the arm rods (29), (31) are opened by the operation opposite to the above, and their claws (6), (7) are removed from the bale (C). The veil (C) is released and released from the glove (D).

(4) Accordingly, the tractor (B) is appropriately moved forward or backward, the work frame (2) with grab (D) is raised or lowered in parallel by the loader (A), and the claws () of the glove (D) are moved. 6) and (7) are closed or opened, and depending on the case, the undulating arm (4) of the grab (D) is raised or laid down, (a) made with a roll baler and discharged laterally and scattered in the field Grab (D) claw (6) with bale (C),
By (7), the bag is grabbed from above and transported, and then the bale (C) is released at a required place, and the bale (C) is loaded horizontally or vertically, or is stacked and stored in a warehouse.

(B) Unloading and transporting the above-mentioned loaded or stacked bale (C). Can work.

(5) The tine device (E) pulls out the pin (48) from the state in which the tine (46) is erected and folded as shown in FIG. When it is rotated clockwise, the tine holder (42) with the tine (46) rotates while the pin (47) advances in the elongated hole (39) of the base metal (37), and as shown in FIG. The pin (47) reaches the front end of the long hole (39), and the tubular body (45) of the tine holder (42) is attached to the lower frame (3
The tine (46) hits the lower surface of 8) and is locked in a substantially horizontal laid state. Then, when the bottle (48) is inserted into the base metal (37) and the pin holes (41) and (44) of the tine holder (42), the tine (46) is fixed in the horizontal state.

On the other hand, pull out the pin (48) from the above state and remove the tine (46).
When the handle is lifted, the tine holder (42) with the tine (46) operates in the opposite manner to the above, and stands up and is folded as shown in FIG. Then, when the pin (48) is inserted into the pin holes (40) and (44) of the base metal (37) and the tine holder (42), the tine (46) is fixed in the folded state.

Therefore, after the tine (46) is laid down and fixed, the loader (A) is operated in the same manner as above to grab the bale (C) with the glove (D) and lift it up, and then the tractor (B) is advanced. If the tine (46) is pierced into another veil (C), it is possible to carry two or three bale (C) at a time.

(6) On the other hand, pull out the pin (25) from the bending arm (5) with grab (D) in the standing state shown in FIG. 1 and rotate the bending arm (5) 180 ° in the undulating arm (4). Then, as shown in FIG. 10, the bending arm (5) falls down and its tip piece becomes vertical, and the glove (D) faces forward. Then, when the pin (25) is inserted into the pin holes (18) and (22) of the undulating arm (4) and the bending arm (5), the bending arm (5) with grab (D) is fixed in the above state. .

Therefore, in this case, (a) the glove (D) is at a lower position than in the state shown in FIG. 1 and is facing forward, so that the bale (C) placed on the ground sideways is Its lateral direction, that is,
It can be grasped by the glove (D) from both sides in the axial direction of the bale (C).

(B) When the bale (C) is placed vertically and is transported, loaded, stacked, unloaded, etc. in the vertical orientation,
It is possible to work without actuating the hoisting arm (4).

(C) A small veil (C) placed on the ground can also be grabbed by the glove (D).

(7) Further, when the bending arm (5) is in the above state,
After pulling out the pin (36) of the grab (D) and pulling out the glove (D) from the bending arm (5), as shown in FIG.
One end of the shape (27) of the grab (D) is fitted to the tip of the bending arm (5) and their pin holes (28), (2
Insert the pin (36) into 4). On the other hand, the pin (5) is inserted in the pin hole (23) of the bending arm (5) and the pin hole of the suspension rod (49).
0) is inserted, the other end of the shape metal (27) is fitted to the other end of the hanging rod (49), and the pin hole (28) of the shape metal (27) and the hanging rod (49) are If the pin (36) is inserted into the other end pin hole and the grab (D) is attached to the tip of the bending arm (5) together with the suspension rod (49), the grab (D) is attached downward. Turns downward and is in a position lower than that shown in FIG.

Therefore, in this case, a small veil (C) placed laterally on the ground can be grasped.

The structure of another embodiment of the present invention shown in FIGS. 12 to 14 will be described. (5a) is a bending arm, (51) is a base piece of a bending radius (5a) , and the middle part thereof is A pin hole (52) is drilled in a direction substantially perpendicular to the pin hole (22), a fan-shaped metal (53) is fixed to the tip, and two adjustment holes (54) are drilled in the tip of the fan-shaped metal (53). . Reference numeral (55) is a tip piece of the bending arm (5a) , which is formed longer than the tip piece of the bending arm (5) in the above-mentioned embodiment and has pin holes (23), (24) in its middle portion.
, Pin holes (23a) and (24a) on the tip side,
Secure the U-shaped mounting plate (56) to the base end. Therefore, the U-shaped mounting metal (56) is fitted to the sectoral metal (53), and the tip of the U-shaped mounting metal (56) is pivotally attached to the base of the sectoral metal (53) by the pin (57). Bending arm in the state shown by the solid line in Fig. 12 by inserting and removing the pin (58) into and from the pin hole at the base of the shape mounting metal (56) and one adjustment hole (54) of the fan-shaped metal (53).
Configure (5a) . Other reference numerals indicate the same parts as in FIGS. 1 to 11.

In this structure as well, (a) the shape (27) of the grab (D) is attached to the bending arm (5
Fit the middle part of the tip piece (55) of a) , and
7) pin hole (28) and tip piece (55) pin hole (23), (2)
4) If the pin (36) is inserted into and the glove (D) is fixed to the bending arm (5a) , the attachment of the glove (D) is the same as that shown in FIG. Because
The operation is similar to that of the above embodiment.

(B) Attach the shape (27) of the grab (D) to the bending arm (5
a) Fit the tip of the tip piece (55) and
7) pin hole (28) and tip piece (55) pin hole (23a),
Bend arm by inserting pin (36) into (24a) and (24a)
When the glove (D) is fixed to (5a) , (i) the same operation as above is performed.

(Ii) The veil (C) located in front of the tractor (B) can be grasped at a distance.

(Iii) As shown by the chain line in FIG. 1, when the glove (D) is raised to raise the standing arm (4) to lift the bale (C), the bale (C) can be lifted high.

(Iv) When the bending arm (5a) is rotated 180 ° from the above state to bring the bending arm (5a) with the graph (D ) to the state shown in FIG. 10, the grab (D) is at a low position, You can also grab a small veil (C) placed on the ground.

(V) Remove the grab (D) from the bending arm (5a) ,
The bent arm (5a) tip piece (55) of the tip pin hole (24a) and hanging rods (49) 11 similarly bent arm and the state shown in FIG. In the above embodiment by using of the (5a) When the glove (D) is attached to the tip, the glove (D) will be in a low position, so a small veil (C) placed on the ground.
You can also grab

(C) From the state in which the bending arm (5a) is shown in FIG. 12, remove the pin (25) and rotate the bending arm (5a) 90 ° to one side to move the pin (25) into the pin holes (18), (52 ) And fix the bending arm (5a) to the undulating arm (4). On the other hand, the pin (58) is pulled out and the tip piece (55 ) of the bending arm (5a) is rotated about the pin (57) as a fulcrum as shown by the chain line in Fig. 12, and the pin (58) is attached to the mounting metal (56). The bending arm is inserted into the pin hole of the base of the and the other adjusting hole (54) of the fan-shaped metal (53).
When the tip piece (55 ) of (5a) is fixed to the base piece (51),
As shown in FIG. 14, the grab (D) is located on one side in front of the fuselage in a horizontal state and faces forward.

Therefore, in this case, the veil (C) can be piled up and down on the wall.

(I) When the bending arm (5a) is fixed by rotating it by 90 ° in the opposite direction to the above, the glove (D) can be positioned on the side opposite to the position shown in FIG.

(Ii) If the pin piece (55 ) of the bending arm (5a) is formed with a pin hole (23), (24) and (23a), or a pin hole perpendicular to (24a), the pin (36) will be inserted. Pull out and rotate the glove (D) 90 °, and insert the pin (36) into the pin hole (28) of the die (27) and the pin hole (55) of the bending arm (5a) at right angles. When put on, the glove (D) is fixed downward and can be operated in the same manner as above.

In addition to this bale (C), this bale loader
It can be used in the same way as above for work such as baling, wood, drum cans, pipe base materials and other columnar or tubular products that are sandwiched and gripped from both sides for carrying, loading, stacking, unloading, etc. .

(Effect of the Invention) The bale loader of the present invention has the following remarkable effects.

(1) A bail for connecting a mounting metal to a tractor of a loader and a working frame at a tip end thereof by a parallel link mechanism of a lift arm and a link, providing an undulating arm on the working frame, attaching a grab to the undulating arm, and attaching / detaching to / from the tractor. Since it is a dedicated loader, its lift arm can be formed to have a required minimum length shorter than the lift arm of the conventional front loader, and the work frame can be arranged near the front of the tractor. Therefore, (a) sufficient lifting ability is created to lift the bale.

(B) Since the grab does not project too much forward from the tractor, the front wheel load of the tractor does not become extremely large when the bale is lifted or transported, and the airframe is stable.

(2) Since the claws on both sides of the grab that are opened and closed are closed to grab the bale for carrying, loading, stacking, unloading, etc., and opening the claws on both sides of the grab to release the veil. ) Grabbing the bale with the claws smoothly and satisfactorily, and the work is efficient and safe.

(B) Grabbing of the bale by the grab is reliable, and there is no risk of the bale falling off from the glove during transportation, which is beneficial for work and safety.

(C) When the claws on both sides of the glove are opened and the bale is released after the bale is stacked, there is no possibility that the bale will be overloaded with an even load applied to both sides.

(3) The work frame is moved up and down by the lift arm of the loader via the parallel link mechanism to raise or lower the grab in parallel, and the hoisting arm attached to the work frame is turned up and down to rotate the grab. (A) Even if the lift arm is formed to be short, the grab can be raised to a higher position by providing the undulating arm, and the bail can be lifted higher, and in general bales. The work efficiency can be improved by stacking in five stages.

(B) Since the operation of the loader is only the vertical rotation of the lift arm and the hoisting arm, the balance of the machine is good and the safety is high when loading, stacking, and unloading the bale.

(4) Both horizontal and vertical stacking of the bale can be easily stacked. (A) It is useful for storing the bale.

(B) The bale can be stored in the storage space without any gap, and the narrow storage space can be effectively utilized without any gap.

(5) In particular, the bending arm is undulated by appropriately rotating the bending arm whose base is rotatably attached to the undulation arm, and the grabbed tip piece of the bending arm becomes horizontal or moves downward. The vertical state of.

Therefore, when the bale is large, the tip of the bending arm is placed in a horizontal state, and when the bale is small, the bending arm is rotated from the above state and the tip is directed downwards to lower the grab. By doing so, regardless of the size of the veil, the veil can always be grasped and lifted and transported smoothly and surely, and the use range is large and the workability is good.

(6) It can be easily constructed and easily manufactured at low cost, and its operation is simple and convenient in terms of work.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a bale loader according to an embodiment of the present invention is attached to a tractor, FIG. 2 is an enlarged rear view of a work frame portion of the same, FIG. 3 is an enlarged front view of a grab portion, and FIG. Is a side view of the frame portion, FIG. 5 is an enlarged side sectional view of the undulating arm with a bending arm, and FIG. 6 is II of FIG.
FIG. 7 is an enlarged side sectional view of the tine portion, FIG. 8 is a side sectional view with the tine lying down, FIG. 9 is a plan view, and FIG. FIG. 11 is a side view of the main part in an operated state, FIG. 11 is a side view of the main part in a state in which the grab is attached using a suspension rod, and FIG. 12 is a bending of a bale loader according to another embodiment of the present invention. FIG. 13 is a side view of the undulating arm with arm, FIG. 13 is a sectional view taken along line II-II of FIG.
FIG. 14 is a plan view of the main part of the bale loader using the undulating arm with bending arm. (B) ... tractor, (D) ... grab, (a),
(B) …… Parallel link mechanism, (1) …… Lift arm,
(2) …… Work frame, (3) …… Mounting stand, (4)…
... undulating arm, (5) ... bending arm, (6), (7)
…… Claw, (8) …… Opening and closing cylinder, (10) …… Lift cylinder, (13), (15) …… Link, (19) …… Release cylinder,

Claims (1)

[Claims] 1. A lift arm and both ends of a link are pivotally attached to an upper portion of a mounting base detachably attached to a tractor and a work frame, respectively, and they constitute a parallel link mechanism so that an intermediate portion of the lift arm. And the lower part of the mounting base are connected by a lift cylinder, the base of the undulating arm is pivotally attached to the upper part of the work frame, the undulating arm and the lower part of the work frame are connected by the undulating cylinder, and the bending arm is connected to the undulating arm. The bale loader is characterized in that the base part of the bending arm is mounted so that it can be appropriately rotated and fixed in that position, and a glove in which the claws on both sides are opened and closed by an opening and closing cylinder is attached to the tip end piece of the bending arm.