JPH0448849Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an equipment drive device that transmits driving force to a power sprayer and a medicine agitator in a chemical spray vehicle. The present invention relates to an equipment drive device for a chemical spray vehicle that can reduce such force.

[Conventional technology]

FIG. 2 is a schematic diagram of a power transmission system in the speed sprayer 10 as a chemical spraying vehicle. The speed sprayer 10 includes, in order from the front, a driver's seat 12 where a driver gets in and performs various operations, a chemical tank 14 that stores chemicals, an engine room 16 that houses an engine 22, etc., and a jet head that sprays chemicals into the surrounding area. 18 and a blower 20 that blows air sucked in from the rear to the jet head 18. The engine 22 is disposed within the engine room 16, and the rotor blades 24 of the blower 20 are driven by rotational power from the rear end of the output shaft of the engine 22.
The rotational power of the front end of the output shaft of the engine 22 is transmitted to the main transmission 2 near the driver's seat 12 via a transmission shaft 26.
8 to the input shaft 30, and further to the main transmission 28.
The signal is transmitted from the transmission shaft 32 to each tire of the speed sprayer 10 via a transmission shaft 32 and an auxiliary transmission (not shown). The power sprayer 34 is connected to a pulley 4 via a belt 38 from a pulley 36 fixed to a transmission shaft 26.
It is driven by the rotational power transmitted to 0. The drug agitator 42 stirs the drug in the drug tank 14 and receives rotational power from the pulley 40 via the propeller shaft 44 .

FIG. 3 is a structural diagram of a conventional input receiving part of a power sprayer 34. The housing 46 is a power sprayer 34
The cover 48 accommodates the elements inside the bolt 5.
0 to the end of the housing 46. One end of the power sprayer drive shaft 52 protrudes to the outside of the housing 46 and is connected to a ball bearing 54.
The cover 48 is rotatably supported by the cover 48.
The oil seal 56 is fitted on the inner periphery of the cover 48 on the outside of the ball bearing 54 in the axial direction, and prevents lubricating oil from leaking from inside the housing 46 . The rotor 58 is fitted onto the end of the power sprayer drive shaft 52 and rotated integrally with the power sprayer drive shaft 52 by a key 60 . The agitator drive shaft 62 with a stopper passes through the boss portion 64 of the rotor 58 and is threadedly engaged with the power sprayer drive shaft 52 to prevent the rotor 58 from coming off from the power sprayer drive shaft 52. 66 projects radially outward from the end of the boss portion 64 on the power sprayer 34 side. The propeller shaft 44 connects to the agitator drive shaft 6 with a stopper via a joint 68.
2, and the pulley 40 is connected to a ball bearing 70.
The pulley 40 and the flange 66 face each other in the axial direction of the power sprayer drive shaft 52 . The armature 72 is fixed to the end face of the pulley 40 on the flange portion 66 side with screws 74, and the field core 76 is located at a position facing the armature 72 with the flange portion 66 of the rotor 58 in between. The member 78 is the cover 48
It is also fixed to the housing 46 with bolts 50. Rotor 58, armature 72, field core 76, etc. constitute an electromagnetic clutch that controls the transmission of power from engine 22 to power sprayer 34 and drug agitator 42.

When the field core 76 is in a non-energized state,
No magnetic force is generated, the armature 72 is separated from the flange portion 66 of the rotor 58, and the pulley 4
0 rotation is not transmitted to the rotor 58, and the power sprayer 34 and drug agitator 42 are in a stopped state. On the other hand, when the field core 76 becomes energized, the armature 72 engages with the flange portion 66 of the rotor 58 due to magnetic force, and the rotor 58 engages with the pulley 4.
0, and the power sprayer 34 and drug agitator 42 are driven.

[The problem that the idea attempts to solve]

Power sprayer drive shaft 52 from housing 46
The amount of protrusion is short, and when the electromagnetic clutch is coupled to the protruding end member of the drive shaft 52 for the power sprayer, it is necessary to dispose and support the pulley 40 on the opposite side of the power sprayer 34 via the electromagnetic clutch. , the amount of overhang from the ball bearing 54 to the pulley 40 increases, and the bending moment applied to the power sprayer drive shaft 52 increases. For this reason, it is necessary to make the drive shaft 52 for the power sprayer thicker, and it is also necessary to increase the strength of the ball bearing 54.

The object of this invention is to provide a drive device for a chemical spray vehicle device that can reduce the bending moment applied to the drive shaft for a power sprayer.

[Means to solve the problem]

The device drive device for the chemical spraying vehicle of this invention consists of a drive shaft for the power sprayer that is rotatably supported in the housing of the power sprayer via a rolling bearing and protrudes to the outside of the housing, and a boss that is powered by the drive shaft. A rotor that is integrally rotatably fitted to the protruding end of the sprayer drive shaft and whose flange protrudes from the end of the boss on the opposite side of the power sprayer, and a rolling bearing on the outer periphery of the boss of this rotor. The pulley is rotatably supported and transmits the rotational power from the prime mover through the armature, which is attached to the end face of the pulley facing the flange of the rotor, and the center line of the pulley is connected to the drive shaft for the power sprayer. A drive shaft for a drug agitator is fitted and fixed to the rotor with a spigot so that it is on the same straight line, and a flange portion of the rotor is rotatably supported by the drive shaft for a drug agitator via a rolling bearing. In between, there is a field core that faces the armature and is prevented from rotating.

[Effect]

Therefore, since the pulley is supported via a ball bearing on the periphery of the boss portion of the rotor fitted to the drive shaft for the power sprayer, the amount of overhang is small. The rotational force of the pulley is such that when the field core is excited and the armature is in contact with the flange portion,
It is transmitted to the drive shaft for the power sprayer and the drive shaft for drug stirring.

〔Example〕

This invention will be described below with reference to an embodiment shown in FIG.

FIG. 1 is a structural diagram of the input receiving portion of the power sprayer 34, and only the differences from FIG. 3 will be explained. The rotor 58 fits into the protruding end of the power sprayer drive shaft 52 from the housing 46 and is connected to the key 60.
It has a boss part 64 which is integrally and rotationally connected to the drive shaft 52 for the power sprayer, and a flange part 66 which projects radially outward from the end of the boss part 64 on the side opposite to the power sprayer 34. There is. The pulley 40 is disposed coaxially with the power sprayer drive shaft 52 between the power sprayer 34 and the rotor 58 in the axial direction of the power sprayer drive shaft 52, and is connected to the power sprayer drive shaft 52 via a ball bearing 70. It is rotatably supported on the outer periphery of the boss portion 64. The stopper ring 80 is connected to the pulley 4.
0 on the inner circumference of the power sprayer 34 side,
It comes into contact with the outer race of the ball bearing 70,
The collar 82 fits into the power sprayer drive shaft 52 , contacts the stepped portion of the power sprayer drive shaft 52 on the end face on the power sprayer 34 side, and contacts the inner race of the ball bearing 70 on the end face on the rotor 58 side. is in contact with. The bolt 84 is inserted through a pressing plate 86 and then screwed into the end of the power sprayer drive shaft 52 in the axial direction, and the pressing plate 86 presses the ball bearing 70 toward the collar 82 via the rotor 58. . The agitator drive shaft 88 is fitted into a center hole at the end of the rotor 58 on the opposite side from the power sprayer 34 with a spigot, and is connected to the rotor 58 by a bolt 90.
Fixed. The field core 76 faces the pulley 40 with the flange portion 66 of the rotor 58 in between in the axial direction of the power sprayer drive shaft 52,
The bearing case 92 is rotatably supported by the agitator drive shaft 88 via a ball bearing 94 at its inner periphery, and is fixed to the annular member 78 by screws 96 . The anti-rotation member 98 has a lower end portion fixed to a stationary portion such as a frame of the speed sprayer 10, and an upper end portion through which a screw 96 is inserted to prevent rotation of the field core 76.

When the field core 76 is energized, the armature 72 magnetically engages the flange portion 66 of the rotor 58, and the rotor 58 rotates integrally with the pulley 40. As a result, the power sprayer 34 and the drug agitator 42 are brought into operation.

When the field core 76 is in a non-energized state, no magnetic force is generated to attract the armature 72 to the flange portion 66 of the rotor 58, the armature 72 is separated from the flange portion 66, and the rotation of the pulley 40 is not transmitted to the rotor 58. . Therefore, the power sprayer 34 and drug agitator 42 are in a stopped state.

[Effect of idea]

Thus, according to this invention, the rotor has a flange portion formed at the end of the boss portion on the opposite side of the power sprayer, and the end of the drive shaft for the power sprayer protruding from the housing and the boss portion of the rotor. The and pulleys are coaxially arranged at the same position in the axial direction of the power sprayer drive shaft, so the power from the rolling bearing that rotatably supports the power sprayer drive shaft in the housing to the pulley. The axial length of the sprayer drive shaft, that is, the amount of overhang, is shortened, and the bending moment applied to the power sprayer drive shaft can be reduced. As a result, it is possible to contribute to miniaturization of the rolling bearing that pivotally supports the drive shaft for the power sprayer in the housing, and to a reduction in the diameter of the drive shaft for the power sprayer.

In this invention, the drive shaft for the drug stirrer is fitted to the rotor by a pilot, so that alignment of the drive shaft for the drug stirrer can be facilitated during assembly.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of this invention, Fig. 1 is a structural diagram of the input receiving part of a power sprayer, Fig. 2 is a schematic diagram of a power transmission system in a speed sprayer as a chemical sprayer, and Fig. 3 is a schematic diagram of a power transmission system in a speed sprayer as a chemical dispersion vehicle. 1 is a structural diagram of a conventional input receiving part of a power sprayer; FIG. 10...Speed sprayer (chemical spraying vehicle),
22...Engine (prime mover), 34...Power sprayer, 40...Pulley, 46...Housing, 52
... Drive shaft for power sprayer, 54 ... Ball bearing (rolling bearing), 58 ... Rotor, 64 ...
...boss part, 66...flange part, 72...armature, 76...field core, 88...drive shaft for drug agitator.

Claims (1)

[Scope of utility model registration request] A power sprayer drive shaft 52 is rotatably supported on the housing 46 of the power sprayer 34 via a rolling bearing 54 and projects to the outside of the housing 46, and a boss portion 64 is connected to the power sprayer drive shaft. 5
The flange portion 6 is integrally fitted into the protruding end portion of the flange portion 6.
6 is the boss portion 64 on the opposite side from the power sprayer 34
a rotor 58 protruding from an end of the rotor 58; a pulley 40 rotatably supported on the outer periphery of the boss portion 64 of the rotor 58 via a rolling bearing 70 and to which rotational power from the prime mover is transmitted;
The pulley 4 facing the flange portion 66 of 8
The armature attached to the end face of 0 and 7
2. A drug agitator drive shaft 88 that is fitted and fixed to the rotor 58 with a spigot so that its center line is on the same straight line as that of the power sprayer drive shaft 52; and this drug agitator drive shaft 88. The field core 76 is rotatably supported via a rolling bearing 94, faces the armature 72 with the flange portion 66 of the rotor 58 in between, and is prevented from rotating. Driving device for chemical spraying vehicle equipment.