JPH0715422U - Transmission equipment for riding agricultural machinery - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is capable of mounting various working machines including a spraying apparatus or a spraying apparatus, and works even if a heavy load is applied to the working machine or the traveling of the machine is stopped. It is an object of the present invention to provide a transmission device for a riding agricultural machine capable of continuously driving a machine or a part thereof. [Composition] In a riding agricultural machine in which a working machine is detachably attached to the rear part of the machine body, and a first PTO shaft for the working machine is projected rearward from a mission case receiving the power of the engine, in the transmission of the first PTO shaft. Separately from the system, a transmission case that receives the power of the engine without passing through the transmission case is provided on a side portion of the machine body, and a second PTO shaft extending rearward from the transmission case is rearward along the side portion of the machine body. A transmission device for a riding agricultural machine, which is interlockingly connected to a drive shaft heading toward the drive shaft through a tilted universal joint.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 At the rear of the machine, select one of a plurality of work machines including a power sprayer or a sprayer that needs to be constantly driven to rotate, or a work machine that needs to be stopped in conjunction with a travel stop. The present invention relates to a transmission device for a riding agricultural machine to be mounted.

[0002]

[Prior art]

 Conventionally, a riding agricultural machine equipped with a working machine such as a rice transplanter used only for a certain work purpose is already known at the rear of the machine body, but this riding agricultural machine is used only for an extremely short period, and then it ends. And because it was stored until the next year, the cost was remarkably high. In order to solve such a problem, another work machine having a different work purpose and work time is exchangeably mounted on the rear part of the main body of the riding agricultural machine and driven by the PTO shaft of the main work machine, and the traveling clutch is disengaged. Alternatively, when the working machine is lifted, it has already been proposed that the transmission to the working machine is cut off in synchronization with it.

[0003]

[Problems to be solved by the device]

 In the above-mentioned riding agricultural machine, when the main work machine is, for example, a rice transplanter, when the planting claw hits an obstacle such as a stone, transmission is performed for the purpose of preventing damage to the transmission device or the planting claw. A torque limiter was installed in the system. However, when a pest control machine, such as a power sprayer, is installed in place of a work machine that requires a torque limiter, such as the above rice transplanter, the pump for pumping the chemical liquid is subject to a large load momentarily. In such a case, the torque limiter may be activated and power transmission to the work machine may be interrupted. In such a case, the spraying operation is interrupted and uneven spraying occurs. If the transmission to the working machine is cut off as described above, or if the traveling clutch is disengaged or the working machine is raised to cut off the transmission to the working machine, the stirring device attached to the chemical tank stops. As a result, the drug precipitates, and the next time spraying is performed, problems such as non-uniform drug concentration occur.

[0004]

[Means for Solving the Problems]

 The present invention relates to a riding agricultural machine in which a working machine is detachably attached to a rear part of a machine body, and a first PTO shaft for the working machine is projected rearward from a mission case which receives power from an engine. Apart from the transmission system of the shaft, a transmission case that receives the power of the engine without going through the mission case is provided on the side of the machine body, and the second PTO shaft extending rearward from the transmission case is installed on the side of the machine body. The above-mentioned problems were solved by interlockingly connecting the drive shaft that goes rearward along the inclined universal joint.

[0005]

[Action]

 When a main working machine such as a planting device is attached to the rear part of the main body of the riding agricultural machine, the working machine is driven by the first PTO shaft. In addition, when the main work machine is removed from the rear part of the main body in order to perform management work after planting, for example, spraying chemicals, and another work machine, for example, a sprayer, is attached to perform the control work, the second PTO shaft is set to the above-mentioned. Interlock with the work machine. At that time, the transmission case, which is different from the mission case, is located on the side of the airframe, but the transmission shaft is along the airframe, so it may collide with ground obstacles such as ridges or get on and off. Smooth transmission can be performed without any interruption. In addition, since the driving force from the second PTO shaft is transmitted to the work machine when a large load is temporarily applied or when the vehicle is stopped, perform high-performance work without stopping the stirring device. You can

[0006]

【Example】

 An embodiment of the present invention will be described with reference to a riding agricultural machine shown in the drawings. An engine 3 is mounted on a front part of a body 2 of the machine 1, a mission case 4 is provided on a rear part thereof, and an input pulley 5 of the mission case 4 is provided. The output pulley 6 of the engine 3 is interlocked by a V-belt 7, and the front axle case 8 projecting from the mission case 4 to both sides drives the left and right front wheels 9 and 9, and the propeller projecting rearward from the lower part. The chaft 10 drives the left and right rear wheels 12, 12 via a rear axle case 11.

Further, when the planting device is mounted on the rear portion of the body 2 via the top link 13 and the pair of left and right lower links 14, 14, the first PTO shaft 15 protruding rearward from the rear rear surface of the mission case 4 is Driving the planting device, a torque limiter (not shown) consisting of a claw clutch energized by an ammunition is interposed in the first PTO shaft drive section in the mission case 4, When the planting device, for example, the planting body hits a stone or the like and is overloaded, the transmission is cut off.

The lower side of the V-belt 7 is hung on a driven pulley 17 mounted on the hydraulic pump shaft 16 and front and rear tension pulleys 18 and 18, and in front of another drive pulley 20 mounted on the hydraulic pump shaft 16. , A transmission case 22 having a lateral input shaft 21a and an output shaft 21b extending rearward and having a bevel gear for interlocking these shafts is provided, and a V pulley 21c attached to the input shaft 21a is provided. The drive pulley 20 attached to the hydraulic pump shaft 16 is driven via the V belt 24 provided with the clutch pulley 24a, and the rear end of the second PTO shaft 23 connected to the output shaft 21a is connected. A universal joint 25 inclined obliquely upward and toward the body 2 side is interlockingly connected to a drive shaft 26 extending rearward close to a side portion of the body 2. Reference numeral 24b is a clutch lever for the second PTO shaft transmission system which intermittently operates the clutch pulley 24a via an operation wire.

Reference numeral 27 denotes a power sprayer mounted on the underframe 28. The horizontal frame 30 mounted on the rear part of the underframe 28 and the movable frames 31, 31 connected to the outer end of the horizontal frame 30 so as to be horizontally rotatable, A spray pipe 32 connected by a flexible hose is attached, the base portion of which is connected to the discharge port of the power sprayer 27 by a flexible pipe, and the connection frame 33 fixed to the front portion of the underframe 28 is The top link 13 and the rear links 14, 14 are connected to the rear ends of the planting device in a state where the planting device is removed.

A work machine input shaft 35 that is transmitted to the power sprayer 27 is supported on the lower portion of the connecting frame 33, and the work machine input shaft 35 is connected to the second PTO shaft 2 3 through a universal joint 36. Is connected to a drive shaft 26 which is interlocked with.

Further, on both sides of the rear part of the machine body 2, there are disposed a pair of left and right medicine tanks 37, 37 whose bottom is connected to the suction port of the power sprayer 27 by a suction hose. Stirring devices 38 and 38 are attached to the tanks 37 and 37, respectively, and the bases of the flexible shafts 39 and 39 connected to the input shafts of the stirring devices 38 and 38 have a frame body 40 fixed to the rear part of the machine body 2. Is connected to the shafts 41, 41 supported by the drive shaft 26 and driven by a sprocket and a chain by the drive shaft 26.

In the riding agricultural machine described above, when the planting device is installed as a working machine, the planting device is driven by the first PTO shaft 15 to perform the planting work. In addition, when performing control work on seedlings that have grown to a certain extent after planting, the planting device is removed from the rear ends of the top link 13 and the lower links 14 and 14 and the connecting frame 33 of the power sprayer 27 is attached. The rear end of the drive shaft 26, which is connected to the 2PTO shaft 23, is connected to the working machine input shaft 35 via a universal joint 36, and the medicines are charged into the medicine tanks 37, 37, and the machine body is made to travel and the clutch pulley 24a. When the operation is turned on, the second PTO shaft 23 rotates, so that the power sprayer 27 and the stirring devices 38, 38 are driven, and the drug solution in the drug tanks 37, 37 is pumped while being stirred and pumped from the spray pipe 32. It is sprayed on the field.

When a relatively large load is applied to the pump at the time of start-up or during the spraying work, since the torque limiter is not provided in the transmission system of the second PTO shaft 23, the power sprayer 27 and the agitator are agitated. Since the devices 38 and 38 do not stop and the second PTO shaft 23 is a transmission system different from the transmission case 4 that distributes power to the traveling device, it is used for the pump while traveling is stopped. If the power to the power sprayer 27 is cut off by operating the clutch lever 42 of No. 1, the stirring devices 38, 38 will continue to rotate, and particles in the drug solution will not settle, and when spraying next, The drug concentration does not become abnormally high or low thereafter.

[0014]

EFFECTS OF THE INVENTION In the present invention, the working machine is detachably mounted on the rear part of the machine body 2, and the first PTO shaft 15 for the working machine is projected rearward from the mission case 4 receiving the power of the engine 3. In the riding agricultural machine, in addition to the transmission system of the first PTO shaft 15, a transmission case 22 for receiving the power of the engine 3 without the transmission of the transmission case 4 is provided on the side portion of the machine body 2 and is directed rearward from the transmission case 22. Since the extended second PTO shaft 23 is operatively connected to the drive shaft 26 extending rearward along the side portion of the body 2 through the inclined universal joint 25, a large load is exerted when the drug is pressure-dispersed. Even if it occurs, the second PTO shaft 23 does not stop, and thereby it is possible to prevent the agitating device 38 of the drug tank from being driven and the drug concentration to change.

Further, since the second PTO shaft 23 does not stop even when the traveling of the machine body is stopped, the stirring device 38 can be continuously driven to keep the drug concentration in the drug tank constant. Furthermore, since the transmission system of the second PTO shaft 23 is a system different from that of the first PTO shaft 15, when the work machine is equipped with a groove cutter, a soil cultivator or a spreader with an engine, etc. Power loss can be prevented by disengaging the transmission system clutch.

Furthermore, since the second PTO shaft 23 and the drive shaft 26 subsequent thereto are arranged along the body, the function of the high clearance specification is not impaired and the crop can be prevented from being damaged during the management work.

[Brief description of drawings]

FIG. 1 is a side view of a riding agricultural machine.

FIG. 2 is a plan view of the same.

[Explanation of symbols]

1 This machine 2 Aircraft 4 Mission case 10 Propeller shaft 15 1st PTO shaft 16 Hydraulic pump shaft 22 Transmission case 23 2nd P
TO shaft 24a Clutch pulley 25 Universal joint 26 Drive shaft 27 Power sprayer 28 Underframe

Claims (1)

[Scope of utility model registration request] 1. A mission case 4 in which a work machine is detachably mounted on a rear portion of a machine body 2 and receives power from an engine 3.
In the riding agricultural machine in which the first PTO shaft 15 for the working machine is projected rearward from the above, in addition to the transmission system of the first PTO shaft 15, a transmission case 22 for receiving the power of the engine 3 without passing through the transmission case 4 is provided. A second PTO shaft 23, which is provided on a side portion of the machine body 2 and extends rearward from the transmission case 22, has a drive shaft 26 which extends rearward along the side portion of the machine body 2.
A transmission device for a riding agricultural machine, characterized in that it is interlockingly connected via a tilted universal joint 25.