JPH04136015U - Horizontal control mechanism for paddy field work equipment - Google Patents

Abstract

(57) [Summary] [Purpose] A gravity sensor that operates a hydraulic control mechanism and a rolling float are connected by an intermediate link that rotates while being restrained by the float, and the gravity sensor is restrained in conjunction with the intermediate link. To easily cancel horizontal control by a gravity sensor as necessary in a paddy field working machine in which the body attitude is horizontally controlled by a gravity sensor. [Structure] A locking device 34 is provided to fix the gravity sensor 23 that detects the tilt of the aircraft body at the neutral position of the hydraulic control mechanism 15, and the locking device 34 includes the gravity sensor 23.
A release mechanism 41 is provided to release the connection between the gravity sensor 23 and the intermediate link 25 when the locking mechanism 3 is locked.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a horizontal control mechanism using gravity sensors for rice field work equipment. It is.

0002

[Conventional technology]

In general, rice field working machines such as rice transplanters, sowing machines, and fertilizer spreaders detect the tilt of the machine body. A gravity sensor that activates the hydraulic control mechanism and a floor that rolls in contact with the rice field. The intermediate link is connected by an intermediate link that rotates while being restrained by a float. A horizontal control mechanism is known in which a gravity sensor that is checked in conjunction with the horizontal axis controls the aircraft's attitude. ing. By the way, when working in rice fields, horizontal control may be canceled if necessary. However, in this type of horizontal control mechanism, the gravity sensor and the float are connected by an intermediate link. The gravity sensor is protected from oil even if the float rolls. In order to prevent the pressure control mechanism from operating, the structure of the link part must be complicated. This has the disadvantage of causing excessive force to be applied to this link when transporting the aircraft. There was also a problem in terms of strength because it was used for many purposes.

0003

[Problem that the idea aims to solve]

The present invention was devised to solve the above problems, and is a gravity sensor. and a float are connected by an intermediate link, but if necessary, a gravity sensor can be added. The horizontal control by the sensor can be easily released, and it is also easy to use when transporting the aircraft. For paddy field work equipment, no unreasonable force is applied to the link part due to the intermediate link. The objective is to provide a horizontal control mechanism for

0004

[Means to solve the problem]

In order to solve the above problems, the technical measures taken by this invention detect the tilt of the aircraft. A gravity sensor that activates the hydraulic control mechanism and a floor that rolls in contact with the rice field. The intermediate link is connected by an intermediate link that rotates while being restrained by a float. Made by Mizuta, the gravity sensor that is checked in conjunction with the horizontal control of the aircraft horizontally controls the attitude of the aircraft. A locking device for fixing the above-mentioned gravity sensor in a neutral position of a hydraulic control mechanism in a commercial machine. In addition, the above-mentioned locking device is designed to connect the gravity sensor and the center when the gravity sensor is locked. This is characterized by the provision of a release mechanism for releasing the connection with the interlink.

[0005]

[Effect]

Therefore, according to the present invention, if the aircraft tilts while working in rice fields, the gravity sensor detects this. Knowing this, the hydraulic control mechanism is activated, and if the float in contact with the rice field rolls. , the intermediate link rotates while being checked by the float, and the weight is rotated in conjunction with this intermediate link. The force sensor is checked and horizontally controls the aircraft's attitude. When not performing horizontal control, the gravity sensor can be activated by operating the locking device. A release mechanism that is fixed in the neutral position of the hydraulic control mechanism and is also provided on the locking device. automatically releases the connection between the gravity sensor and the intermediate link, and the hydraulic control mechanism automatically releases the connection between the gravity sensor and the intermediate link. Release control completely. In addition, when transporting the aircraft, if the gravity sensor is fixed, the gravity sensor can be No excessive force is applied to the connection between the sensor and the intermediate link, eliminating problems with strength. It will never occur.

[0006]

【Example】

Next, one embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is rice field work This is a walk-behind rice transplanter, which is an example of a machine with a flexible body with engine 2 mounted on the front. A float 4 is provided at the bottom of the arm 3, and a float 4 is supported on both sides by a chain case 5. A swing wheel 6 is provided. 7 is a planting device consisting of a seedling stand 8, a seedling planting rod 9, etc. Department. The float 4 has a rear end that can be rotated freely through a bracket 10. The front side of float 4 moves up and down to approach and move away from the aircraft. It has become. 11 is a lever that adjusts the planting depth by moving the rear end of the float 4 up and down. It's a bar.

[0007] Further, the swing wheel 6 has a rotating arm protruding from the swing shaft 12 of the chain case 5. 13 is connected to a hydraulic control mechanism 15 via a connecting rod 14. The control mechanism 15 is configured as follows. In other words, 16 is the front of engine 2. A main cylinder erected at a position, with left and right sides at the upper end of the main cylinder 16. A lifter balance 17 in the direction is mounted so as to be able to swing vertically via a fulcrum shaft 18. The connecting rod 14 is connected to both ends of the rod. 19 is the bottom surface of the lifter balance 17 This is a sub cylinder placed on the side. 20 is a hydraulic control valve provided on one side of the front of the engine 2; A support member 21 is projected from the lubricant 20, and a rotation fulcrum 22 provided on the support member 21 A gravity sensor 23 that detects the inclination of the aircraft body is suspended and supported so as to be able to swing from side to side. 24 is a spool shaft of the hydraulic control valve 20, and the spool shaft 24 is connected to the gravity control valve 20. The gravity sensor is connected to the gravity sensor 23 and rotates relative to the aircraft when the aircraft tilts. In conjunction with the sensor 23, the spool shaft 24 switches the hydraulic control valve 20 to control the sub cylinder. The lever 19 is actuated, and the lifter balance 17, which is swung up and down, moves the left and right swing wheels 6 in the opposite direction. Horizontally control the aircraft's attitude by moving it up and down in the direction. There is also a sensing rod (not shown) on the aircraft. When the vertical movement of the main cylinder 16 is detected, the hydraulic control valve 20 is switched to control the main cylinder 16. expands and contracts to move the left and right swing wheels 6 up and down simultaneously.

[0008] 25 is an intermediate link connecting the gravity sensor 23 and the float 4; The intermediate link 25 has a fulcrum shaft 26 provided in the middle thereof, which is connected to a bearing portion 2 provided on the body side. 7 and is rotatably supported. Also, a pin 28 provided on the upper end side of the intermediate link 25 is connected to the gravity sensor 23 via a long hole 29, and the lower end side of the intermediate link 25 , the vertical direction through which the restraining pin 31 of the restraining member 30 installed upright on the float 4 is inserted. By providing the check groove 32, the rolling float 4 is It is designed to automatically rotate by checking the The check groove 32 is in the lowest limit state. From the position of the restraining pin 31 of the float 4, which is now in the state, it opens downward in an expanded shape. A play part 33 is formed at the upper end of the check groove 32, and the float 4 moves upward to prevent the machine from moving. When the nose is close to the body, the restraint on the intermediate link 25 by the float 4 is released. It is now possible to do so.

[0009] 34 is a locking device for the gravity sensor 23, and the locking device 34 is It is formed of a rod 35 and is connected to a support member 36 provided on the back side of the gravity sensor 23. It is supported by a panel 38 provided at the rear end of the bonnet 37 so as to be slidable back and forth. Ru. The front end of the rod 35 is located near the pivot point 22 provided on the gravity sensor 23. It faces the engagement hole 39 of the rod 35 and grips the grip part 40 provided at the rear end of the rod When the rod 35 is pushed forward, the tip of the rod 35 will fit into the engagement hole 39. The gravity sensor 23 is fixed to the neutral position of the hydraulic valve 20. Further, 41 is a release mechanism provided in the locking device 34, and the release mechanism 41 is It is formed of a release rod 42 that is fixed to the rod 35 and bends forward. The front surface of the pad 42 faces the upper rear surface of the intermediate link 25. and locking When the gravity sensor 23 is locked at position 34, the release rod 42 is simultaneously moved to the intermediate position. The intermediate link 25 is pushed forward as shown in FIG. The ring 28 comes out of the elongated hole 29 of the gravity sensor 23 and connects the gravity sensor 23 and the intermediate link. The link 25 is automatically disconnected. 43 is provided on the rod 35. The return spring 44 is a driving handle extending upward and rearward of the fuselage.

0010 In the above configuration, when performing planting work, the swing wheel 6 is used as a tiller. The seedling planting rod 9 scrapes the seedlings on the seedling stand 8 while the float 4 slides on the rice field. Pick it up and plant it on the rice field. When the aircraft tilts during work, the gravity sensor 23 that swings against the aircraft triggers the hydraulic control valve. 20 to operate the sub cylinder 19, and the left and right swing wheels 6 move in opposite directions. It moves up and down to horizontally control the aircraft's attitude. On the other hand, when the float 4 is tilted, the check member 30 provided on the float 4 The gravity sensor 23 moves in the same direction as the inclination of the float 4. Since it is restrained in the direction, the aircraft attitude is controlled horizontally based on the field. When horizontal control is not performed due to field conditions, etc., the operation handle 44 An operator on the side grips the grip part 40 of the rod 35 and moves the rod 35 forward. The gravity sensor 23 can be fixed at the neutral position simply by pushing it in. For this reason In addition to simplifying the structure of the lock device 34, the rod 35 supports the gravity sensor 23 for rotation. Since it locks at a position near point 22, there is less variation and the gravity sensor 2 is completely locked. 3 can be fixed. Moreover, at the same time as the gravity sensor 23 is locked, the release rod 42 is released from the intermediate link 2. 5 forward to automatically release the connection between the gravity sensor 23 and the intermediate rod 25. Therefore, the horizontal control by the gravity sensor 23 can be completely canceled. However, This not only simplifies the structure of the link part, but also makes it easier to transport the aircraft. However, if the gravity sensor 23 is fixed, the connection between the gravity sensor 23 and the intermediate link 25 is established. Since it is released and no unreasonable force is applied to the link part, it may cause strength problems. There's nothing wrong with that.

[0011]

[Effect of the idea]

In short, the present invention is a heavy-lift system that detects the tilt of the aircraft and activates the hydraulic control mechanism. The force sensor and the float rolling in contact with the rice field are restrained by the float. The gravity sensor is connected by an intermediate link that rotates at the same time, and is checked by the intermediate link. The above-mentioned gravity sensor is used in a rice paddy work machine that horizontally controls the attitude of the machine. A locking device is provided to fix the hydraulic control mechanism in a neutral position, and the locking device is The release function disconnects the gravity sensor from the intermediate link when the gravity sensor is locked. Since the mechanism is provided, the gravity sensor and the float are connected by an intermediate link. If you want to release the horizontal control while the gravity sensor is fixed with a locking device, The gravity sensor and intermediate link are automatically disconnected, making horizontal control easy and It can be definitely removed. Therefore, the structure of the link part becomes simpler and the whole The gravity sensor can be made lightweight and compact, and the gravity sensor can be fixed even when the aircraft is being transported. If the It is possible to reliably prevent problems from occurring.

[Brief explanation of drawings]

FIG. 1 is an overall side view of a paddy field working machine.

FIG. 2 is a plan view of the same as above.

FIG. 3 is a front view of the horizontal control mechanism.

FIG. 4 is a perspective view of the same as above.

FIG. 5 is a side view of main parts.

FIG. 6 is an enlarged view of a part of the same as above.

[Explanation of symbols]

4 Float 15 Hydraulic control mechanism 23 Gravity sensor 25 Intermediate link 34 Lock device 41 Release mechanism

Claims (1)

[Scope of utility model registration request] [Claim 1] A gravity sensor that detects the inclination of the machine body and operates a hydraulic control mechanism, and a float that rolls in contact with the rice field are connected by an intermediate link that rotates while being restrained by the float. In a paddy field working machine in which a gravity sensor that is interlocked and checked horizontally controls the attitude of the machine, a locking device is provided to fix the gravity sensor in a neutral position of the hydraulic control mechanism, and the locking device includes a gravity sensor. A horizontal control mechanism for a paddy field work machine, characterized in that a release mechanism is provided to release the connection between a gravity sensor and an intermediate link when the link is locked.