JP4301699B2 - Belt clutch mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a belt-type clutch mechanism, and more specifically, a clutch roller is pivotally supported on a roller arm linked to an electric motor, and the power transmission belt is switched by tension or relaxation of the power transmission belt by rolling of the clutch roller. The present invention relates to a belt-type clutch mechanism that turns on and off power transmission between a drive pulley and a driven pulley wound around the belt.
[0002]
[Prior art]
Conventionally, as a belt-type clutch mechanism configured to switch on and off power transmission by switching tension and relaxation of a power transmission belt wound between a driving pulley and a driven pulley, for example, FIG. 7 to FIG. As shown, a power transmission belt c is wound between a driven pulley a and a driving pulley b that are spaced apart from each other, and a roller arm e that supports a clutch roller d that is pressed against the power transmission belt c is connected to a fan-shaped gear f. There has been proposed a structure in which the power transmission belt c is switched between tension and relaxation by interlocking with the output shaft i of the electric motor h via a pinion gear g and by the rolling motion of the roller arm e.
[0003]
However, in the belt-type clutch mechanism configured as described above, the pinion gear g is directly supported on the output shaft i built in the bearing member j. Therefore, as shown by the dotted line in FIG. When held in tension, the driving force transmitted from the driving pulley b to the driven pulley a always acts as a reaction force on the pinion gear g via the clutch roller d, the roller arm e, and the gear f, and the pinion gear The output shaft i of the electric motor h that supports g is maintained in a cantilevered state with respect to the reaction force, which causes eccentricity of the output shaft i itself, damage to the bearing member j, the sealing material, and uneven wear. Therefore, there is a possibility that a stable clutch on / off operation over a long period of time cannot be secured.
[0004]
[Problems to be solved by the invention]
The present invention was created in the course of research and development aimed at improving the performance of the conventional belt-type clutch mechanism in view of the actual situation as described above. The object of the present invention is to support the pinion gear on the support mount. In this state, by linking the pinion gear to the output shaft of the electric motor, the uneven load acting on the output shaft of the electric motor constituting the belt type clutch mechanism can be reliably dispersed, and the support mount of the pinion gear can be An object of the present invention is to provide a belt-type clutch mechanism that can be used as a mount for an electric motor as it is, and can maintain a tight state between the members and have a compact configuration.
[0005]
[Means for Solving the Problems]
The technical means employed by the present invention in order to solve the problem is based on an electric motor 22 in which a clutch roller 18 is pressure-bonded to a power transmission belt 17 wound between a driving pulley 15 and a driven pulley 16 and a speed reduction mechanism is incorporated. In a belt-type clutch mechanism configured to switch between tension and relaxation of belt tension by rolling of the clutch roller 18, a gear 19 is attached to the rotation base end of a roller arm 20 that pivotally supports the clutch roller 18 at the tip. A support mount 26 having a bearing portion 25 is fixed to a bracket 24 to which these are attached, and a receiving portion 30 is integrally formed coaxially with a pinion gear 21 meshing with the gear 19, and the receiving portion 30 is supported and mounted. 26, the pinion gear 21 is linked to the output shaft 23 of the electric motor 22 incorporating the speed reduction mechanism. While, is characterized in that the electric motor 22 is fixedly attached to the support mount 26.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a combine equipped with a Glen tank 2 employing a belt type clutch mechanism of the present invention. The combine 1 is movable up and down and left and right at the front of a traveling machine body having a crawler traveling device (not shown). A driving operation unit 7 that supports the pre-processing unit 3 and includes an operation panel 6 including a driver's seat 4, a front panel 5a, and a side panel 5b is provided behind the driving processing unit 7, and a rear portion of the driving operation unit 7 A glen tank 2 that is turnable to the side is disposed on one side, and a threshing section 8 is disposed on the other side. Further, a vertical conveying pipe 9 is erected on the rear side of the grain tank 2, and the grains subjected to the threshing selection process in the threshing unit 8 are lifted and conveyed by a cerealing cylinder (not shown) and stored in the grain tank 2. The combine 1 is configured so as to be discharged from the discharge port 10a of the discharge auger 10 to the outside through the vertical transport pipe 9 later.
[0007]
The side panel 5b is provided with a continuously variable transmission lever 11 for controlling the vehicle speed, and behind the continuously variable transmission lever 11, the power from the engine is discharged into the drive mechanism of the discharge auger 10. A clutch switch 12 is provided, and when the discharge clutch switch 12 is turned on, the rotational power from the engine is transferred into the Glen tank 2 via a belt-type clutch mechanism 13 described later, as shown in FIGS. Is transmitted to a horizontal spiral shaft (not shown). Reference numeral 14 denotes a tank lever for rotating the Glen tank 2 outward.
[0008]
The belt-type clutch mechanism 13 has a power transmission belt 17 wound between a counter shaft pulley 15 serving as a driving pulley and a horizontal spiral shaft pulley 16 serving as a driven pulley, and a clutch roller 18 that is pressure-bonded to the power transmission belt 17. The pinion gear 21 meshed with the gear 19 is linked to the output shaft 23 of the electric motor 22 with a built-in speed reduction mechanism. Then, by swinging the roller arm 20 with the driving force of the electric motor 22, the tension of the power transmission belt 17 is increased or decreased, and the transmission power from the counter shaft pulley 15 to the horizontal spiral shaft pulley 16 is turned on.・ We are going to decline.
[0009]
Here, the belt-type clutch mechanism 13 will be described in detail. As shown in FIG. 6, the lateral spiral shaft pulley 16, the roller arm 20, and the gear 19 are respectively attached to a bracket 24 to which the tank lever 14 is attached. Further, a support mount 26 fitted with a ring-shaped ball bearing 25 is fixed to the bracket 24, and a plate 27 fixed to one side of the gear 19 and a middle portion of the roller arm 20 are projected. The pin 28 and the pin 28 are elastically connected via a compression spring 29, and the clutch roller 18 at the tip thereof is elastically attached to the power transmission belt 17 by swinging of the roller arm 20 linked to the rotation of the gear 19. Yes.
[0010]
On the other hand, as shown in FIG. 5, at the bottom of the pinion gear 21 that meshes with the gear 19, a receiving portion 30 that is fitted to the ball bearing 25 of the support mount 26 is integrally formed coaxially. In the state where the pinion gear 21 is supported by the support mount 26 via the ball bearing 25, an output is obtained by forming a parallel surface by cutting out a part of the outer peripheral surface of the recessed recess 31 cut out at the tip of the seat portion 30. By fitting the shaft 23, the rotational driving force of the electric motor 22 is transmitted to the pinion gear 21. Further, the support mount 26 is also used as a motor mount for fixing the electric motor 22 itself to the bracket 24 via the screws 32, 32... ing.
[0011]
Since the present invention is configured as described above, when the grain in the Glen tank 2 is discharged to the outside of the machine via the discharge auger 10, the electric motor is first turned on when the discharge clutch switch 12 of the operation unit 7 is turned on. When the pinion gear 21 shown in FIG. 3 rotates in the clockwise direction as shown in the drawing, the gear 19 engaged therewith rotates relatively counterclockwise, and the rotational force of the gear 19 causes the compression spring 29 to rotate. When the roller arm 20 swings counterclockwise, the clutch roller 18 pivotally supported at the tip of the roller arm 20 is elastically attached to the power transmission belt 17 and the belt 17 is held in tension. As a result, the belt-type clutch mechanism 13 is turned on, and the rotational power from the countershaft pulley 15 is transmitted to the horizontal helical shaft pulley 16 so that the horizontal helical shaft (not shown) Rolling in so that the grain in the grain tank 2 is conveyed to the discharge auger 10 through the vertical transport pipe 9.
[0012]
Further, when the discharge clutch switch 12 of the driving operation unit 7 is turned off, the rotation direction of the electric motor 22 is reversed, and the pinion gear 21 shown in FIG. 3 rotates counterclockwise as viewed in the figure, and the gear 19 is engaged therewith. As the roller arm 20 rotates relatively clockwise, the clutch roller 18 that has been held in an elastic state with respect to the power transmission belt 17 also swings away from the power transmission belt 17. The tension state of the belt 17 is switched to a relaxed state, and the belt-type clutch mechanism 13 that has been in a clutch-on state is clutch-off, and transmission of rotational power from the countershaft pulley 15 to the horizontal spiral shaft pulley 16 is interrupted. As a result, the conveyance of the grain to the discharge auger 10 is stopped.
[0013]
In such an on / off operation of the discharge clutch switch 12, particularly in the belt-type clutch mechanism 13 of the present invention, the seat portion 30 of the pinion gear 21 is supported over the entire circumference by the ball bearing 25 fitted to the support mount 26. Therefore, the reaction force from the power transmission belt 17 does not directly act on the output shaft 23 of the electric motor 22 via the pinion gear 21 when the clutch is on, and the output shaft 23 is applied to the output shaft 23 by the ball bearing 25 and the support mount 26. Can be reliably distributed over a long period of time without inducing the eccentricity of the output shaft 23 itself, breakage of the bearing member, seal material, and uneven wear as in the conventional belt-type clutch mechanism. The ON / OFF operation of the clutch can be ensured.
[0014]
【The invention's effect】
In short, in the present invention, a clutch roller is pressure-bonded to a power transmission belt wound between a driving pulley and a driven pulley, and the tension of the belt tension is relaxed by rolling of the clutch roller by an electric motor incorporating a speed reduction mechanism. In the belt-type clutch mechanism configured to switch the gear, a support mount having a bearing portion is fixed to a bracket that attaches a gear to a rotation base end of a roller arm that pivotally supports the clutch roller at a distal end. An output shaft of an electric motor incorporating the speed reduction mechanism with the pinion gear integrally formed coaxially with the pinion gear meshing with the gear and with the seat portion fitted to the bearing portion of the support mount. in conjunction with connecting, the electric motor from the attached fixed to a support mount, the output of the electric motor to the time of engagement of the teeth wheel and pinion By supporting the pinion gear with the support mount having the bearing portion, the unbalanced load acting on the bearing can be reliably dispersed to prevent damage to the bearing member that fits the output shaft of the electric motor, uneven wear, etc. it can.
Also the support mount, since is serves the electric motor to the motor mount to attach fixed, since the support mount pin Niongiya directly becomes an electric motor mount, a belt clutch compactly holds tight state between the members A mechanism can be configured.
This is a very useful new effect.
[Brief description of the drawings]
FIG. 1 is an overall plan view of a combine that employs a belt-type clutch mechanism of the present invention.
FIG. 2 is a front view of the Glen tank.
FIG. 3 is an overall front view of a belt-type clutch mechanism.
FIG. 4A is an enlarged front view of a main part.
(B) is a partial cross-sectional plan view of the same.
FIG. 5A is a left side view of the pinion gear.
(B) is a front view of the same.
(C) is a right side view of the above.
(D) is a front view of an output shaft.
(E) is a side view of the same as above.
(F) is an operation explanatory view showing a fitting state between the pinion gear and the output shaft.
FIG. 6 is an exploded perspective view of a main part of a belt type clutch mechanism.
FIG. 7 is an overall front view of a conventional belt-type clutch mechanism.
FIG. 8A is a plan view of a main part of a conventional belt-type clutch mechanism.
(B) is a front view of the same.
FIG. 9 is an exploded perspective view of a main part of a conventional belt type clutch mechanism.
[Explanation of symbols]
13 Belt clutch mechanism 15 Counter shaft pulley (drive pulley)
16 Horizontal spiral shaft pulley (driven pulley)
17 Power transmission belt 18 Clutch roller 19 Gear 20 Roller arm 21 Pinion gear 22 Electric motor 23 Output shaft 24 Bracket 25 Ball bearing (bearing portion)
26 support mount 30 seat

Claims (1)

A clutch roller (18) is pressure-bonded to a power transmission belt (17) wound between a drive pulley (15) and a driven pulley (16), and the clutch roller (18) by an electric motor (22) with a built-in speed reduction mechanism. ), The belt tension clutch is configured to switch between tension and relaxation of the belt tension, and the gear (19) is provided at the rotation base end of the roller arm (20) that pivotally supports the clutch roller (18) at the tip. A support mount (26) having a bearing portion (25) is fixed to a bracket (24) to which these are attached, and a seat portion (30) is attached to a pinion gear (21) meshing with the gear (19). The pinion gear (21) is integrally formed coaxially, and the pinion gear (21) is fitted to the bearing portion (25) of the support mount (26). Together interlockingly connected to the motor (22) of the output shaft (23), a belt clutch mechanism, characterized in that the electric motor (22) is fixedly attached to the support mount (26).

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