JPH1189309A - Vibrator for machine for coating balk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To beforehand prevent the breakage of the vibrator of a balk-coating machine. SOLUTION: This vibrator of a balk-coating machine is obtained by connecting a hydraulic pump 24 to a hydraulic motor 56 in a communicating state and further connecting an eccentric weight 57 to the hydraulic motor 56 in a communicating state, and is vertically vibrated by the rotation of the eccentric weight 57 to compact a balk. Therein, a flow diverter 59 is disposed between the hydraulic pump 24 and the hydraulic motor 56, and the flow diverter 59 is connected to a hydraulic oil tank 26 in a communicating state. When the pressure of a hydraulic oil fed into the hydraulic motor 56 exceeds a prescribed value, a part of the hydraulic oil is diverted into the hydraulic oil tank 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a vibrator for a ridge coater.

[0002]

2. Description of the Related Art Conventionally, as a ridge coating machine connected to a traveling machine and forming a new ridge while traveling along an old ridge, a hydraulic pump is connected to a power input shaft interlocked with a power take-off shaft of the traveling machine. The hydraulic pump is linked to the hydraulic pump,
A ridge coater that forms a new ridge by vibrating a vibrator by the hydraulic motor is known.

[0003]

However, in the above-mentioned conventional ridge coater, when the shift of the power take-off shaft side of the traveling machine is erroneously operated, the hydraulic motor of the vibrator is overloaded and the hydraulic motor is turned off. At first, the vibrator might be damaged.

As a countermeasure, there is a configuration in which a warning sound is issued to notify the operator when the hydraulic motor is overloaded, but the warning sound is canceled by the vibration sound of the vibrator. The sound alone may not be able to reliably notify the operator that the hydraulic motor has been overloaded.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a hydraulic pump connected to a hydraulic motor, an eccentric weight connected to the hydraulic motor, and a vertical vibration caused by the rotation of the eccentric weight. In a vibrator of a ridge coater configured to tamper, a flow divider is interposed between a hydraulic pump and a hydraulic motor, and the flow distributor is connected to a hydraulic oil tank to be supplied to the hydraulic motor. When the hydraulic pressure of the operating oil becomes equal to or higher than a predetermined value, a part of the operating oil is diverted to the operating oil tank.

[0006] A pressure sensor for detecting an overload state of the hydraulic motor is provided, and when the overload state of the hydraulic motor is detected by the pressure sensor, one of hydraulic oil to be supplied to the hydraulic motor is provided. A part or the whole is configured to flow to the hydraulic oil tank.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A vibrator of a ridge coater according to the present invention has a hydraulic pump connected to a hydraulic oil tank, a hydraulic motor connected to the hydraulic pump, and a hydraulic oil tank connected to the hydraulic motor. In addition, when the hydraulic pressure of the hydraulic oil to be supplied from the hydraulic pump to the hydraulic motor becomes higher than a predetermined value between the hydraulic pump and the hydraulic motor, a part of the hydraulic oil is diverted to the hydraulic oil tank. Is provided with a flow divider.

When the hydraulic pressure of the hydraulic oil to be supplied to the hydraulic motor becomes equal to or more than a predetermined value, a part of the hydraulic oil is diverted to the hydraulic oil tank via a bypass oil passage by a flow divider. In addition, the hydraulic motor is prevented from being subjected to a hydraulic oil pressure of a predetermined value or more.

Accordingly, the hydraulic motor is not subjected to a hydraulic oil pressure of a predetermined value or more, and the hydraulic motor and the vibrator can be prevented from being damaged.

The vibrator of the ridge coater according to the present invention may be arranged such that all hydraulic oil to be supplied from the hydraulic pump to the hydraulic motor is supplied to the hydraulic oil tank between the hydraulic pump and the hydraulic motor, or A pressure sensor for detecting the oil pressure of hydraulic oil to be supplied to the hydraulic motor between the hydraulic oil tank and the hydraulic pump, with an oil path switcher that can selectively switch between flowing to the motor Is provided.

When the pressure sensor detects that the hydraulic pressure of the hydraulic oil to be supplied to the hydraulic motor has exceeded a predetermined value, that is, when it is detected that the hydraulic motor is in an overload state In Japanese Patent Application Laid-Open No. H11-157, the entire hydraulic oil is diverted to the hydraulic oil tank via a bypass oil path by an oil path switch, so that the rotation of the hydraulic motor is stopped and the vibration of the vibrator is stopped.

Therefore, when the hydraulic motor is in an overload state, the rotation of the hydraulic motor is stopped, which can also prevent the hydraulic motor and the vibrator from being damaged. .

In particular, in a cold condition in which an excessive load is applied to the hydraulic motor or the hydraulic pump at the start of driving of the vibrator, the warm-up operation of the hydraulic circuit can be automatically performed.

When a flow divider is used in place of the oil passage switcher and the pressure sensor detects that the hydraulic pressure of the hydraulic oil to be supplied to the hydraulic motor has exceeded a predetermined value, When it is detected that the motor is in an overload state, a part of the hydraulic oil is diverted to the hydraulic oil tank through the bypass oil passage by the flow divider, so that the hydraulic motor However, even if the vibration is not applied, damage to the vibrator including the hydraulic motor can be prevented.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings.

In FIG. 1, A is a ridge coater, and the ridge coater A is connected to the rear of a traveling machine such as an agricultural tractor so as to be able to move up and down via a three-point link mechanism as a traction link. In addition, while being pulled along the ridge of a field, the ridge coating operation is performed by receiving the power from the power take-off shaft of the traveling machine. In the figure, C is the old ridge, D is the new ridge, and F is the slope of the ridge.

The ridge coater A mainly includes a drive case 1 connected to the rear end of the three-point link mechanism to support each part of the ridge coater A, and a rotary portion formed at a right side position of the drive case 1. 2 and a ridge forming part 3 supported by a ridge forming part elevating mechanism 4 attached to the drive case 1 at a position behind the rotary part 2.

The drive case 1 has a rectangular box-shaped gear box 5 formed at a position immediately behind the power take-off shaft, and a hollow pipe-shaped claw shaft case 6 is provided on the right side wall of the gear box 5 with an axis line extending to the lower right of the body. The case support 8 is formed on the left side wall of the gear box 5 so as to be horizontal toward the left side of the fuselage, and a three-point link mechanism is provided above the gear box 5. At the same time, the rear end of the top link is rotatably pivoted, and mounting plates 7, 7 'are formed at the left end of the case support 8 and the middle part of the claw shaft case 6, and the mounting plates 7, 7' are respectively provided. The rear ends of the left and right lower links of the three-point link mechanism are pivotally connected to each other so as to be rotatable, and the levee coating machine A can be raised and lowered by a lifting mechanism provided on the traveling machine.

As shown in FIG. 3, the rotary portion 2 is formed at the tip end of the claw shaft case 6.
The claw shaft 10 is inserted into the hollow portion of the shaft, and a driven bevel gear 12 attached to the base end of the claw shaft 10 and a power transmission bevel gear 13 attached in the middle of the power input shaft 9 operatively connected to the power take-off shaft. The rotating force acting as the power from the power take-off shaft meshes with the inside of the box 5 so as to be transmitted to the claw shaft 10 extending obliquely downward to the right.

Further, at the tip of the claw shaft 10, tilling claws 11 whose tip is bent outward are mounted in five rows at regular intervals along the axial direction of the claw shaft 10. Claws 11
Is formed so as to be shorter as the row of the tilling claws 11 located on the tip side of the claw shaft 10 so that the substantially horizontal rice field E can be excavated substantially uniformly.

Further, a rotary cover 14 is formed at an upper position of the rotary portion 2 so as to cover the tilling claw 11, and a fixed support member constituting a ridge forming portion lifting mechanism 4 described later.
A base end of a hollow pipe-shaped rotary cover support 16 is projected from the front of 43 with an axis line extending in the front-rear direction of the fuselage, and a rotary cover rotation shaft 15 is inserted into the rotary cover support 16 and the rotary cover is rotated. The axis of the cover rotation shaft 15 is bent at a substantially right angle toward the lateral width direction of the fuselage in the middle part, the rotary cover 14 is attached to the tip of the rotary cover rotation shaft 15, and the rotary cover 14 is supported by the rotary cover. It is configured so that it can be flipped up around the axis of the body 16, a flat plate-shaped receiving body 18 is horizontally mounted on the tip of the rotary cover support 16, and a flat plate stopper is provided in the middle of the rotary cover rotating shaft 15. When the ridge coater A is in use, the receiving body 18 and the stopper 17 are fixed in contact with each other. That is, the rotary cover 14 is
It can be turned upside down between a use position where it covers just above 11 and a non-use position where it jumps upward and opens just above the tilling claw 11. Reference numeral 19 denotes a detent pin, and reference numeral 20 denotes a rotary cover rotation lever.

Below the rotary cover 14, a base end of a flat guide plate 21 is attached to the tip of the claw shaft case 6 so as to be orthogonal to the axis of the claw shaft case 6.
21 is bent slightly toward the rear of the fuselage from the middle, and formed so as to cover the rear of the tilling claw 11 which rotates the soil collecting guide 21a, and further, a plate-shaped scraper 22 is provided below the soil collecting guide 21a. The tilling claw 11 is formed in a curved shape along the rotation locus of the tip. Reference numeral 50 denotes a rubber cover attached to the outer peripheral edge of the rotary cover 14 downward.

As shown in FIG. 2, the ridge forming section 3 elastically supports the vibrator 39 at the tip of a ridge forming section elevating mechanism 4 attached to the rear position of the drive case 1 and has a rear surface below the vibrator 39. An approximately rectangular plate-shaped ridge-shaped molded body 40 bent in a substantially elliptical shape is fixed via a connecting body 54.

The ridge forming section elevating mechanism 4 has a cylindrical support frame 25 projecting upward from the gear box 5 of the drive case 1 with its axis protruding toward the rear of the machine body. Attach the body 33 with the body 33 inclined downward and to the right, and attach the upper end of the lateral support rod 34 to the lateral guide body 33.
33 is freely slidable up and down in the direction of extension, and is loosely fitted to the lower end of the horizontal support rod 34 in a state where the vertical guide body 35 is inclined toward the lower left direction, and vertically supported by the vertical guide body 35 Vertical guide with rod 36
The lower end of an elevating cylinder 37, which is slidably mounted in the extension direction of 35 and is attached to the lower end of the vertical support rod 36, is pivotably mounted on the lower end of the vertical support rod 36. A vibrator 39 is attached to the tip of 36 via a vibrator support 38. 44 is a mounting plate for the support frame 25, and 49 is a roller.

The vibrator 39 includes a vibrator support 38
The four vertical springs 41 are interposed between the four corners of the vibrator 39 and the upper surface of the vibrator 39, and the spring support 52 is vertically suspended from the lower surface of the vibrator support 38, and the spring stopper is provided on the upper part of the vibrator 39. A horizontal spring 42 is interposed between the vibrator support 53 and the vibrator support 38 so as to be able to vibrate vertically and horizontally.

The vibrator 39 connects a hydraulic motor 56 to a hydraulic pump 24 disposed behind the drive case 1 through a hydraulic pipe 48 so as to rotate an eccentric weight 57 by the hydraulic motor 56. The vibrator 39 is made to vibrate. The hydraulic pump 24 is connected to the power input shaft 9 in an interlocked manner.

That is, as shown in FIGS. 3 to 5, a vertically-long rectangular box-shaped chain case 23 is formed immediately behind the gear box 5, and a hydraulic pump is formed immediately below the lower part of the chain case 23. The drive sprocket 28 is attached to the front end of the power input shaft 9 passing through the gear box 5 inside the chain case 23 inside the chain case 23.
At the same time, the driven sprocket 29 is mounted in the middle of the rotating shaft 51 of the hydraulic pump 24, and the chain belt 30 is suspended between the driving sprocket 28 and the driven sprocket 29. A hydraulic oil tank is located on the right side of the gear box 5.
26 is attached via a support 27. In the figure, 31 is a cooling fan, 32 is a fan cover, 32a is a cooling air guide, 32b is a ventilation hole, 45 is a rolling wheel support frame, 46 is a rolling wheel support,
47 is a rolling wheel.

Next, a hydraulic circuit 58 for vibrating the vibrator 39 will be described.

As shown in FIG. 6, the hydraulic circuit 58 basically connects the hydraulic pump 24 to the hydraulic oil tank 26, and connects the hydraulic motor 56 to the hydraulic pump 24. The hydraulic oil tank 26 is connected to the hydraulic fluid.

Further, between the hydraulic pump 24 and the hydraulic motor 56, a flow divider for diverting a part of the hydraulic oil to be supplied from the hydraulic pump 24 to the hydraulic motor 56 to the hydraulic oil tank 26.
A pressure sensor 61 for detecting the oil pressure of the hydraulic oil flowing through the bypass oil passage 60 is provided in the bypass oil passage 60 that communicates and connects the same flow divider 59 and the hydraulic oil tank 26 with the intermediate flow device 59 interposed therebetween. I have. Here, the flow distributor 59 is a hydraulic motor 56 that divides a part of the hydraulic oil to the hydraulic oil tank 26 when the hydraulic pressure of the hydraulic oil to be supplied to the hydraulic motor 56 becomes a predetermined value or more.
The hydraulic pressure of the working oil supplied to the oil tank is controlled to be equal to or less than a predetermined value.

The pressure sensor 61 is for detecting the presence or absence of hydraulic oil flowing through the bypass oil passage 60, and is connected to the control unit 62. The control unit 62 has a buzzer for generating a warning sound. 63 is connected.

When the hydraulic pressure of the hydraulic oil to be supplied to the hydraulic motor 56 exceeds a predetermined value, a part of the hydraulic oil is divided by the flow divider 59 to the hydraulic oil tank 26 through the bypass oil passage 60. By diverting, the hydraulic motor 56 is prevented from receiving hydraulic pressure of hydraulic oil of a predetermined value or more.

Further, when it is detected by the pressure sensor 61 that the hydraulic oil is flowing through the bypass oil passage 60, a buzzer 63 emits a warning sound. The buzzer
Instead of 63, a warning lamp may be attached and the warning lamp may be turned on to visually notify the operator of the abnormality.

As described above, the hydraulic motor 56 and the vibrator 39, including the hydraulic motor 56, can be prevented from being damaged by preventing the hydraulic motor 56 from being subjected to the hydraulic pressure of the hydraulic oil of a predetermined value or more. In this case, the vibrator 39 is continuously vibrating, and the ridge coating operation can be continued.

FIG. 7 shows a hydraulic circuit 64 according to another embodiment. In this embodiment, an operation to be supplied from the hydraulic pump 24 to the hydraulic motor 56 is provided between the hydraulic pump 24 and the hydraulic motor 56. An oil passage switch 65 capable of selectively switching whether all of the oil flows to the hydraulic oil tank 26 or to the hydraulic motor 56 is provided, and the oil passage switch 65 and the hydraulic oil tank are interposed. 26 is connected to the bypass oil passage 60
A pressure sensor 61 for detecting the hydraulic pressure of the working oil flowing through the bypass oil passage 60 is provided. Further, a pressure sensor 66 for detecting the oil pressure of the hydraulic oil to be supplied to the hydraulic motor 56 is provided between the hydraulic oil tank 26 and the hydraulic pump 24.

The hydraulic circuit 64 is controlled by a control unit 62, and the control unit 62 is connected to an oil passage switch 65 together with a buzzer 63.

The hydraulic pressure motor 66
When it is detected that the hydraulic pressure of the hydraulic oil to be supplied to the hydraulic motor 56 is equal to or higher than a predetermined value, that is, when it is detected that the hydraulic motor 56 is in an overload state, the oil passage switch 65
As a result, the entire hydraulic oil is diverted to the hydraulic oil tank 26 via the bypass oil passage 60, whereby the rotation of the hydraulic motor 56 is stopped and the vibration of the vibrator 39 is stopped.

Further, when it is detected by the pressure sensor 61 that the hydraulic oil is flowing in the bypass oil passage 60, a warning sound is emitted from the buzzer 63 to notify the operator of the abnormality. In this embodiment, when the vibration of the vibrator 39 is stopped in the event of an abnormality, the operator can be notified of the abnormality without issuing a warning sound, and the members such as the buzzer 63 can be eliminated. In this embodiment,
Since the vibration of the vibrator 39 is stopped at the time of the abnormality, the warning sound is not canceled by the vibration sound of the vibrator 39.

As described above, when the hydraulic motor 56 is in an overload state, the rotation of the hydraulic motor 56 is stopped to prevent damage to the hydraulic motor 56 and the vibrator 39 in the same manner as in the previous embodiment. Can be prevented.

Particularly in cold weather, vibrator 39
An excessive load is applied to the hydraulic motor 56 and the hydraulic pump 24 at the start of the driving of the hydraulic motor. However, by switching the oil path to the bypass oil path 60 by the oil path switch 65, the hydraulic motor
The warm-up operation of the hydraulic circuit 64 can be automatically performed without operating the 56.

In the present embodiment, the flow divider 59 shown in the above embodiment can be used in place of the oil passage switch 65.

The hydraulic pressure motor 66
When it is detected that the oil pressure of the hydraulic oil to be supplied to the hydraulic motor 56 is equal to or higher than a predetermined value, that is, when it is detected that the hydraulic motor 56 is in an overload state, the hydraulic oil splitter 59 Is divided into the hydraulic oil tank 26 via the bypass oil passage 60 so that the hydraulic oil of hydraulic oil having a predetermined value or more is not applied to the hydraulic motor 56. And the vibrator 39 can be prevented from being damaged.

[0043]

The present invention is embodied in the form described above and has the following effects.

(1) According to the first aspect of the present invention, a flow divider is interposed between the hydraulic pump and the hydraulic motor, and the flow divider and the hydraulic oil tank are connected and connected to supply the hydraulic motor. When the hydraulic pressure of the hydraulic oil to be supplied is equal to or higher than a predetermined value, the hydraulic motor is configured to divert a part of the hydraulic oil to the hydraulic oil tank, so that the hydraulic oil of the predetermined oil or higher is not applied to the hydraulic motor. In addition, damage to the hydraulic motor and the vibrator can be prevented.

(2) According to the present invention, a pressure sensor for detecting an overload state of the hydraulic motor is provided.
When the overload state of the hydraulic motor is detected by the pressure sensor, by configuring a part or all of the hydraulic oil to be supplied to the hydraulic motor to flow to the hydraulic oil tank,
When the hydraulic motor is in an overload state, the rotation of the hydraulic motor will be stopped or limited, which also
Damage to the hydraulic motor and the vibrator can be prevented.

In particular, in a cold condition in which an excessive load is applied to the hydraulic motor or the hydraulic pump at the start of driving of the vibrator, the warm-up operation of the hydraulic circuit can be automatically performed.

[Brief description of the drawings]

FIG. 1 is a plan view of a ridge coater according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a rear view of the rotary unit.

FIG. 4 is a plan view of a drive system.

FIG. 5 is a sectional view of the same.

FIG. 6 is an explanatory diagram showing a hydraulic circuit for driving a vibrator.

FIG. 7 is an explanatory diagram showing a hydraulic circuit for driving a vibrator as another embodiment.

[Explanation of symbols]

 A Ridging machine C Old ridge D New ridge E Rice field 3 Ridge forming part 24 Hydraulic pump 26 Hydraulic oil tank 39 Vibrator 56 Hydraulic motor 57 Eccentric weight 58,64 Hydraulic circuit 59 Divider 60 Bypass oil path 62 Control part 65 Oil path switching Instrument 66 Pressure sensor

Claims (2)

[Claims] A hydraulic motor (56) is communicatively connected to a hydraulic pump (24), an eccentric weight (57) is connected to the hydraulic motor (56) in an interlocking manner, and vertical vibration is caused by rotation of the eccentric weight (57). do it,
In a vibrator of a ridge coater configured to tamper with ridges, a flow divider (59) is interposed between the hydraulic pump (24) and the hydraulic motor (56), and operates with the same flow divider (59). When the hydraulic pressure of the hydraulic oil supplied to the hydraulic motor (56) exceeds a predetermined value, a part of the hydraulic oil is divided into the hydraulic oil tank (26). A vibrator for a ridge coater characterized by being configured to flow. 2. A hydraulic pump (24) is communicatively connected to a hydraulic motor (56), an eccentric weight (57) is connected to the hydraulic motor (56) in an interlocking manner, and vertical vibration is caused by rotation of the eccentric weight (57). do it,
In a vibrator of a ridge coating machine configured to tamper with a ridge, a pressure sensor (66) for detecting an overload state of a hydraulic motor (56) is provided, and the hydraulic motor (5) is detected by the pressure sensor (66).
When the overload state of (6) is detected, part or all of the hydraulic oil to be supplied to the hydraulic motor (56) is supplied to the hydraulic oil tank (2).
A vibrator for a ridge coater, characterized in that it is configured to flow in 6).