JP2556681B2 - Roll bearer safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention picks up straw grass such as grass and straw scattered in a field by a pickup unit, carries it into a bale forming chamber by a pipe conveyor, and forms it into a roll-shaped bale. At the same time, the present invention relates to a roll baler safety device in which the bale is taken out of the machine through an opening of a side door on the side of the bale forming chamber.

[Prior Art] Conventionally, as disclosed in Japanese Utility Model Laid-Open No. 60-160127, there is a technology for detecting the hardness of a bale formed in a bale forming chamber, notifying the completion of the bale, and performing a bale bundling operation.

[Problems to be Solved by the Invention] In the prior art, the detector detects that the movable piece is pushed by the completed veil and the hardness of the veil reaches a predetermined pressure, and the alarm device is activated to notify. , When the detector does not operate even when the bale is completed, or when the detector does not activate the alarm, or when the alarm activates and the bale forming work is not stopped, Continuing, the bale in the bale forming chamber bulged abnormally,
There is a defect that damages the pipe conveyor or drive mechanism that forms the bale.

"Means for Solving the Problem" Therefore, the present invention provides a bale forming chamber in a safety device of a roll baler that includes a pipe conveyor that forms a bale and elastically presses the pipe conveyor to the bale of the bale forming chamber. Completion sensor that activates when the pipe conveyor is pushed to the bale formation completion position by the bale and notifies the completion of the bale, and a bail that operates when the pipe conveyor is pushed further than the bale completion position to stop the engine The present invention is characterized in that an overpressure sensor and an engine stop limiting member for preventing the engine stop operation of the overpressure sensor from being performed by the pipe conveyor separating operation for removing the bale in the bale formation chamber are provided.

[Operation] Therefore, even if the veil forming work is continued after the veil is completed due to malfunction of the completion sensor or the like, it is possible to prevent abnormal bulging of the veil by the engine stop operation of the veil overpressure sensor, and to form the veil. Also, damage to the drive mechanism, etc. can be easily prevented, and when the completed bale is taken out of the bale forming chamber, the engine operation of the bale overpressure sensor will stop even if the pipe conveyor is moved away from the bale forming chamber. Therefore, it is possible to easily prevent the engine from stopping each time a normal baling operation is performed, and it is possible to easily protect the veil forming mechanism and improve workability.

Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view of a main part, FIG. 2 is an overall side view, and FIG. 3 is a plan view of the same. In the figure, (1) is a machine base having a traveling crawler (2), and (3) is the above-mentioned. A baler unit mounted on the machine base (1), (4) a pickup unit having a pickup guide plate (5) mounted so as to be able to move up and down in front of the baler unit, and (6) a rear part of the machine base (1). An engine part which is installed and internally houses the engine (7), and (8) is an operation panel (9) which is arranged in the left and right center of the body behind the engine part (6).
(10) is a bundling device internally provided on the front side of the baler section (3), (11) is a work clutch lever disposed on the left side of the operation section (8), and (12) is the pickup. Pickup up / down adjustment handle for adjusting the support height of the section (4), (13) a traveling clutch lever provided on the operation panel (9), (14) and (14) left and right side clutch levers, and (15) an auxiliary gear shift. It is a lever.

A curved bale forming main pipe conveyor (16) and a sub pipe conveyor (17) which is a bale shaping member are arranged in the bailer section (3) so as to face each other, and the bale forming chamber (18) is formed.
As shown in FIG. 4, the sub pipe conveyor (17) is provided with a drive sprocket (19) and an idler (20).
The left and right sub-endless chains (2) via the chain guide (21) and the chain guide (22) which is a chain guide between them.
3) (23) is stretched and these left and right chains (23) (2
3) A plurality of sub-veil forming pipes (24) are laid horizontally at equal intervals via bolts.

As shown in FIG. 5, the main pipe conveyor (1
6) is between a drive sprocket (25) provided substantially above the center of the baler part (3) and an idle sprocket (26) provided in front of the baler part (3) and facing the pickup part (4). A pair of upper and lower chain guides (27) (28)
The left and right main endless chains (31) (31) are stretched via the tension rollers (29) (30), and a plurality of bolts (32) are equally spaced between the left and right chains (31) (31). The main bale forming pipe (33) is laid horizontally.

Further, a pickup rotation fulcrum cylinder shaft (34) is provided on the same axis as the sprocket shaft (26a) of the idle sprocket (26), and the cylinder shaft (34) includes the pickup case (35) of the pickup section (4). ) A pickup drum (38) is mounted on the case (35), which supports the base end so as to be vertically movable, and supports a plurality of pickup fingers (37) via an eccentric shaft (36). Furthermore, the sprocket shaft (19) of the drive sprocket (19) (25) is
a) Power input sprocket (3a) fixed to (25a)
9) (40) to the small diameter part (41a) of the sub-counter pulley (41)
And the large diameter portion (41b) of the sub-counter pulley (41) is linked to the main counter pulley (44) on the engine side via the chain (45). The main and sub pipe conveyors (16, 17) and the pickup drum (38) are simultaneously rotated by the output of the engine (7). When the pick-up drum (38) is rotated, pick-up fingers (37) appropriately protruding to the outside of the drum (38) pick up straw grass in the field, and the main pipe conveyor (16) directly inside the bale forming chamber (18). The straw grass is carried into the roll-shaped bale (A) by the rotation of the conveyor (16) and the sub pipe conveyor (17) in the chamber (18), and the straw grass is formed into the bale (A). After the formation is completed, a bale (A) is bundled around the bale (A) by the twine of the bundling device (10), and the bale (A) is taken out of the machine through a side door (46) on the left side of the bale forming chamber (18). It was done.

Furthermore, a pair of chain guides (28) in the main pipe conveyor (16) have upper and lower pivoting plates (28) on both ends of the chain guides (28) on the sprocket shaft (25a) and the sub counter pulley shaft (47) of the sub counter pulley (41). 48) (49) supported by a sub-counter pulley shaft (47) that supports the sub-counter pulley shaft (47) on the side plate (3a). A roller guide groove that opens a guide roller (51) that supports the sprocket shaft (25a) in an arc shape on the side plate (3a) about the pulley shaft (47) while supporting the sprocket shaft (25a) in a swingable manner. (52) is supported via a resin guide member (53), and the upper end of the chain guide (28) can be swung about the pulley shaft (47).
The semicircular bale forming part (16a), which is the feed end side of the main pipe conveyor (16), is moved rearward so that the bale forming chamber (18) can be enlarged. Note that (5
4) is a straw grass supplementary transportation plate for promoting straw grass transportation.

As shown in FIGS. 6 to 7, the chain guide (28) for moving the bale forming part (16a) of the main pipe conveyor (16) has a conveyor moving link mechanism (55) on the side door (46). ), The link mechanism (55) includes a lower rotation fulcrum shaft (5) of the side door (46).
6) A rotating arm (57) integrally fixed to the arm, and the arm (5).
A rod (58) that is connected to the 7) so that its mounting length can be adjusted, and a left end plate (3a) of the baler part has a base end swingably supported by a shaft (59) and a tip end by a pin (60). Rod (58)
A first swing plate (61) connected to the other end, and the swing plate (61)
A connecting plate (63) for connecting the lower end to the pin via a pin (62),
A swing arm (66) having a base end swingably supported by a swing fulcrum shaft (64) of the side plate (3a) and a tip end connected to an upper end of the connecting plate (63) via a shaft (65); , The side plate (3a)
A swing arm (67) having a base end fixed to the fulcrum shaft (64) inside, a connecting plate (69) connecting one end to the arm (67) through a pin (68), and the side plate (67). A second swinging plate (72) whose base end is swingably supported by 3a) via a shaft (70) and one end side of which is connected to the other end of the connecting plate (69) via a pin (71).
And a guide connecting plate (75) for connecting the pivot plate (48) and the second swing plate (72) via pins (73) (74), respectively.
And a bail compression spring (76) that is stretched between the connecting plate (63) and the shaft (65) so that the spring pressure can be adjusted. Mainly by the force of the closing spring (76) of the door (46). Pipe conveyor (16)
The end of the door is held in the forward movement position and the door (4
It is configured such that the end of the main pipe conveyor (16) is moved to the rear enlarged position by a certain angle (β) via the link mechanism (55) when opened (6).

The lower end of the spring (76) is an eccentric shaft (77) of the connecting plate (63).
The upper end of the eccentric shaft (77) is rotatably supported by the fixing piece (79) of the connecting plate (63) via the adjusting bolt (78), and the handle ( 80) The spring (76) force can be adjusted in multiple steps by operation.

Further, a bale pressure detection switch (81), which is a completed sensor for detecting when the diameter of the bale (A) reaches a finished diameter of a certain value or more, is provided outside the left side plate (3a). A switch operating member (84) is rotatably attached to a fixed mounting plate (82) fixed to the plate (63) via an axial bolt (83), and an L-shaped arm (85) fixed to the operating member (84). ) Is provided so as to contact the actuator (81a) of the switch (81), and the mounting plate (8
A fulcrum crossing spring (87) is stretched between the fixing pin (86) and L-shaped arm (85) of 2). Also, the adjusting bolt (7
The bail pressure detecting member (89) is integrally attached to the pressure adjusting nut (78a) that engages with the tip of 8) via the bolt (88), and the detecting operating pin (90) is attached to the detecting member (89). The upper and lower engaging plates (91) (92), which are integrally fixed and are brought into contact with the operating pin (90), are fixed to the operating member (84), so that the normal main pipe conveyor (16) is closed. Sometimes, the operating member (84) is pulled clockwise by the spring (87) to keep the switch (81) off, while the diameter of the bail (A) becomes a certain value or more, and the contact pressure causes the spring (76). When the main pipe conveyor (16) opens backward a certain angle (α) around the shaft (47) against the force, the shaft (65) of the swing arm (66) is connected to the connecting plate about the shaft (64). It is moved up along the long hole (63a) of (63) and operated through the operating pin (90) and the upper engaging plate (91) as shown in phantom line in FIG. Wood (84) to pass over fulcrum a spring (87) and to said shaft is rotated in the counterclockwise direction (83), L-arm (8 in this case the operation member (84)
5) The actuator (81a) of the switch (81) is pressed by the switch (81) to turn on the switch (81) to drive the alarm device to notify the operator of the completion of the formation of the bale (A).

By the way, although the predetermined bale pressure is detected by the detection switch (81), the bale forming work is unexpectedly continued, and when the bale pressure becomes a constant excessive pressure, the drive of the engine (7) is stopped. A detection switch (93), which is a sensor, is provided on the left side plate (3a), and a switch operation piece (94) for turning on the switch (93) is provided on the upper pivot plate (48) to prevent excessive bale pressure. Therefore, when the main pipe conveyor (16) is in a state of opening backward by a certain angle (θ) (θ> α) beyond the angle (α) about the axis (47),
The operation piece (94) is configured to turn on the switch (93).

As shown in FIG. 8, an alarm buzzer (97), which is an alarm device, is connected to the main switch (96) for applying a power source (95) through the switch (81), and the switch (96) is connected in parallel with the switch (96). The engine stop circuit (9) for stopping the drive of the engine (7) via the (93) and ON delay circuit (98)
9) is connected, the buzzer (97) is activated when the switch (81) is turned on, and the engine stop circuit (99) is activated after a certain time has passed since the switch (93) is turned on. It is configured to stop driving. That is, the engine stop circuit (99) is operated by momentarily turning on the switch (93) when the side door (46) is opened to move the main pipe conveyor (16) to the rear enlarged position by a certain angle (β). The switch (93) does not operate, and operates when the ON operation of the switch (93) is continued for a certain period of time.

As is clear from the above, the pipe conveyor (16) for forming the bale (A) is provided and the bale forming chamber (1) is provided.
In the safety device of the roll baler for elastically pressing the pipe conveyor (16) to and from the bale (A) of 8), the pipe conveyor (16) forms the bale (A) by the bale (A) of the bale forming chamber (18). The bale pressure detection switch (81), which is a completion sensor that operates when pushed to the completion position and notifies the completion of the bale (A), and the pipe conveyor (16) is pressed further than the completion position of the bale (A). Excessive bale pressure due to the detection switch (93), which is an excessive bale pressure sensor that sometimes operates to stop the engine (14), and the pipe conveyor (16) separating operation that removes the bale (A) from the bale formation chamber (18). An ON delay circuit (98), which is an engine stop limiting member, is provided to prevent the operation detection switch (93) from stopping the engine (7).

The present embodiment is configured as described above, and straw grass such as hay picked up by the pickup section (4) is carried into the bale forming chamber (18) by the main pipe conveyor (16), and the main and sub pipe conveyors ( 16) (17) is used to form a roll-shaped bale (A). Then, when the diameter of the bale (A) is now formed to be equal to or larger than the predetermined diameter, the bail (A) pressure causes the chain guide (28) of the main pipe conveyor (16) to resist the spring (76). It can be pushed backward by a fixed angle (α) about the shaft (47). In this state, each element (75) (72) (69) (6
7) (64) (66) (65) (78) (89) (90) (91) The action is transmitted in order, and the operating member (84) is rotated counterclockwise about the shaft (83). . As a result, the spring (8
7) crosses the fulcrum and the arm (85) switches (81)
When the switch (81) is turned on, the alarm buzzer (97) is driven to notify the operator of the completion of the formation of the bale (A). In this case, the shaft (65) moves in the long hole (63a) of the connecting plate (63), and the side door (46)
It works regardless of. Then, the twine supplied from the bundling device (10) is wound around the outer periphery of the bale (A), and after the result, the side door (46) is opened to automatically open the main pipe conveyor (16). The end, that is, the bale forming part (16a) moves rearward by a certain angle (β) around the shaft (47), and the pressing of the conveyor (16) against the bale (A) is released to take it out. .

On the other hand, while the switch (81) is turned on during the bale formation work and the alarm buzzer (97) is activated, the work is continued due to forgetting to disconnect the work clutch lever (11), etc., and the bale pressure becomes a predetermined pressure. When the overexcessive pressure is reached, the switch (93) is turned on by the operation piece (94) of the main pipe conveyor (16) to stop the driving of the engine (7) and interrupt the work.

"Effects of the Invention" As is apparent from the above embodiments, the present invention is provided with the pipe conveyor (16) forming the base (A), and the pipe conveyor (16) is provided on the bale (A) of the bale forming chamber (18). In a safety device of a roll baler for elastically pressing the bale (A) so that the pipe conveyor (16) is pushed to the bale (A) formation completion position by the bale (A) of the bale forming chamber (18), the bale (A) is activated. Completion sensor (81) for notifying the completion of A), and bale overpressure sensor (93) that operates when the pipe conveyor (16) is pushed further than the completion position of the bale (A) and stops the engine (14).
And an engine stop limiting member (b) for preventing the engine (7) of the excessive bale pressure sensor (93) from being stopped by the operation of separating the pipe conveyor (16) for taking out the bale (A) from the bale forming chamber (18). 98), even if the veil (A) forming work is continued after the veil (A) is completed due to a malfunction of the completion sensor (81), the engine (7) of the veil overpressure sensor (93) is stopped. By the operation, abnormal bulging of the bale (A) can be prevented, damage to the pipe conveyor (16) forming the bale (A), the drive mechanism, etc. can be easily prevented, and the completed bale (A) can be removed from the bale forming chamber ( Pipe conveyor (16) when removing from 18)
Even if the operation to separate the from the bale forming chamber (18) is performed,
Since the engine (7) stop operation of the bale overpressure sensor (93) is not performed, it is possible to easily prevent the engine (7) from stopping each time the normal bale (A) is taken out, and the bale (A) forming mechanism is provided. It is possible to easily protect and improve workability.

[Brief description of drawings]

FIG. 1 is a side view of an essential part, FIG. 2 is a side view of the whole, FIG. 3 is a plan view of the same, FIG. 4 is a drive view of a baler part, and FIG.
FIG. 6 is an explanatory view of the main pipe conveyor portion, FIG. 6 is a partially enlarged explanatory view of the link mechanism portion, FIG. 7 is an explanatory plan view of the same, and FIG. 8 is an electric circuit diagram. (16) …… Pipe conveyor (18) …… Bale forming chamber (81) …… Bale pressure detection switch (complete sensor) (93) …… Detection switch (excess bale pressure sensor) (98) …… On delay circuit ( Engine stop limiting member) (A) ... Bale

Claims (1)

(57) [Claims] 1. A roll baler safety device for providing a pipe conveyor (16) for forming a bale (A), and for elastically pressing the pipe conveyor (16) to and from the bale (A) of a bale forming chamber (18). And a completion sensor (81) that operates when the pipe conveyor (16) is pushed to the bale (A) formation completion position by the bale (A) of the bale formation chamber (18) and notifies the completion of the bale (A). , An excessive bale pressure sensor (93) which is activated when the pipe conveyor (16) is pushed further than the completed position of the bale (A) and stops the engine (14), and the bale in the bale forming chamber (18) ( Engine stop limiting member (98) that prevents the engine (7) of the bale pressure excess sensor (93) from being stopped by the operation of separating the pipe conveyor (16) for taking out A).
A safety device for roll balers, characterized by being provided with.