WO1987007349A1

WO1987007349A1 - Variable-speed pulley

Info

Publication number: WO1987007349A1
Application number: PCT/JP1987/000328
Authority: WO
Inventors: Kenkichi Onogi; Naomichi Shito
Original assignee: Tokyo Jido Kiko Kabushiki Kaisha
Priority date: 1986-05-24
Filing date: 1987-05-22
Publication date: 1987-12-03

Abstract

Improvement in variable-diameter, variable-speed pulley (1) in which a second conical wheel (11) is moved slidingly with respect to a first conical wheel (12), which improvement is designed so as to carry out the replacement of a belt therefor speedily, and more particularly to an improvement in a variable-diameter, variable-speed pulley, in which a conical member (12b) of the first conical wheel (12) and a slide shaft (18), or a conical member (11b) of the second conical wheel (11) and a cylinder (11a) are formed separably in advance so as to enable the conical member (11b) of the second conical wheel (11) to be removed from the first conical wheel (12) with the conical member (12b) of the first conical wheel (12) kept mounted on a rotary shaft (40) and a slide device and a pressure device between the two conical wheels (11, 12) kept combined integrally without requiring disassembling.

Description

Bright variable speed burry technology field

The present invention relates to a speed change pulley that continuously varies the contact radius between a belt and a pulley. More specifically, the present invention is directed to a speed change pulley capable of performing belt exchange quickly.

Background technology

FIG. 4 shows a disassembled structural diagram of a conventional belt transmission using a speed change bury.

Several belt replacement methods have been considered for belt transmissions that use this type of shifting burley. The first method is to remove and replace the entire speed change BURY from the input shaft and the output shaft having a fixed distance between the shafts. The second method is to disassemble one of the transmission pulleys attached to the input / output shaft and replace the belt.

The former method requires the removal of the entire speed change pulley, which complicates the work and is inefficient. In the latter method, as shown in Fig. 4, the variable speed pulley 1 consisting of a fixed cone wheel 1a and a sliding cone wheel 1b is usually attached to the output shaft 4, but when the belt is replaced, With the moving cone wheel 1b left on the shaft 4, only the fixed cone wheel 1a is released by releasing the bolt 8, and the belt 9 is replaced. .

However, the first and second methods are illustrated in FIG. As shown in the figure, only the lid H is disposed on the right side R of the transmission main body A in the same figure to make it open, and in the direction of the left side L, both the input 轴 (for example, the rotation of the motor B) and the output shaft 4 are connected. Applicable only to belt transmissions A of centrally located model.

Therefore, for example, if it is desired to lead the output shaft 4 in the direction of the right side R of the transmission main body A, the conventional variable speed pulley as shown in FIG. Since disassembly work is inevitable, extremely complicated and inefficient work is required. In particular, for a transmission of the type that leads the output shaft in the direction of arrow R, a load device (not shown) is attached to the output shaft. Due to the inconvenience of separating and then exchanging the belt, it is hardly used despite the high demand.

The inefficiency of this belt replacement is due to the fact that it is easy to separate only the IS constant cone wheel 1a from the shift burley 1 with the conventional shift buries, but the sliding cone wheel 1b is It is thought that it was thought that it was impossible to remove the sliding cone wheel 1b from the speed change pulley because the additional mechanism 2a such as a device, a lubrication device, and a pressurizing device was assembled to the body. It is.

The present invention overcomes the above-mentioned problems and provides a speed change pulley capable of speeding up and speeding up belt changing work regardless of the type of the transmission main body. , Especially the two circular plates that make up the shifting pulley In particular, the present invention provides a speed change bury that enables the separation and removal of the cone の of the sliding conical wheel from the speed change pulley without adversely affecting other control mechanisms.

Disclosure of the invention

According to one aspect of the present invention, the speed change pulley is arranged such that the conical plates of the first and second conical wheels face each other, and further, the second conical wheel is moved with respect to the first conical wheel. The cylinder of the second wheel is slidably fitted on the shaft of the first conical wheel, and a sliding device including a key device and a lubricating means is provided between the shaft and the cylinder. The conical plate of the second conical wheel facing the conical plate of the first conical wheel in a state in which the sliding device is fitted and assembled on the shaft and the cylinder. However, it can be separated and assembled independently of the conical plate of the first conical wheel.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows a speed change burley according to a first embodiment of the present invention. FIG. 1 (A) is a cross-sectional view showing a state of a maximum contact diameter between a belt and a burry, and FIG. Fig. (C) shows the operation of removing the conical plate of the sliding cone wheel, and Fig. (D) shows the operation of mounting the conical plate.

FIG. 2 shows an application example of the belt transmission equipped with the speed change pulley of the embodiment of FIG. 1, wherein FIG. 2 (A) is a longitudinal sectional view and FIG. 2 (B) is a transverse sectional view thereof. Show. Also

FIG. 3 shows a speed change pulley according to a second embodiment of the present invention, FIG. (A) is a longitudinal sectional view, FIG. (B) is a sectional view thereof, and FIG. (C) is an exploded explanatory view of removing the cone of the second conical wheel (D). () Shows longitudinal sectional views when a pressurizing device is added.

FIG. 4 is an explanatory view showing a belt exchange membrane of a normal belt transmission using a conventional speed change pulley.

BEST MODE FOR CARRYING OUT THE INVENTION FIGS. 1 (A), 1 (B), 1 (C) and 1 (D) show various states of a speed change burley according to an embodiment of the present invention.

In the figure, reference numeral 1 denotes a speed change pulley, which is a first conical wheel, that is, a fixed conical wheel 12 attached to the rotating shaft 40 in this embodiment, and a second conical wheel, that is, a first conical wheel. In the embodiment, it is composed of a sliding conical wheel 11. The main difference between the speed change pulley 1 of the present embodiment and the conventional speed change pulley is that in the conventional speed change pulley, the conical plate of the fixed conical wheel and the sliding shaft are mechanically integrally formed, and the sliding speed is reduced. In contrast to the shaft provided with a bracing opening for the rotating shaft 40, in this embodiment, the shaft of the fixed cone wheel and the cone 扳 are divided near the root of the shaft. Moreover, it is a point that they are fitted into the rotating shaft 40 as separate members in this divided state. In detail, in the figure, 1 1 and 1 2 are sliding and fixed conical wheels, and the rain wheel has an opening from the fixed conical wheel 12 for mounting on the output shaft 40. Opened and fixed in the state shown. The 1st conical wheel 1 2 is with a set screw 13 and the 2nd conical wheel 11 is with a shaft 18 and a retaining bolt.

New paper It is attached by being fixed to the rotating shaft 40 from the axial direction at 2 1. The shaft 18 has a locking portion 18a at its tip, and a female screw 18c on the inner wall at the back of the fixing opening 18b. Reference numeral 18 e denotes a lubricating oil retainer, which is sealed with a set screw 2 2, a sliding surface 18 f is lubricated through a passage 18 g, and a sliding surface 1 on an outer peripheral wall of a shaft 18. 8 f If the cylinder 11 a of the second R wheel 11 is fitted via the key 14 <the cover 16 a between one end of the shaft 18 and the sliding cone 11 , 16 b, the receiving plate 19 is attached to the end of the shaft 18 through the strip spring 20 to arrange the spring 15. For this reason, the tip circumference 緣 11 e of the cone 板 plate 11 b of the second conical wheel 1 i applies a pressing force of the spring 15 to the tip end locking portion 18 a of the shaft 18 described above. While engaging. For this reason, the cone wheel 11, the shaft 18, and the spring 15 are each formed as an integral assembly, and furthermore, the whole is separated at the dividing boundary 17 to form the first cone wheel 12. It can be detached or mounted from the rotating shaft 40 completely independently by the bolt 21.

FIG. 1 (B) is an operation explanatory diagram in a state where the contact diameter between the belt and the pulley is the minimum contact diameter. As is apparent from FIG. 2, as the transmission control device 45 forcibly slides the transmission pulley 10 as described later in FIG. 2 (A), the belt 9 is moved by the transmission pulley 1. Accordingly, the belt 9 enters the inside of the conical wheel lib, 12b, and changes its contact radius contiguously. At this time, only the second conical wheel 11 starts to slide on the basis of the conical plate 12b of the first conical wheel 12. The second conical wheel 11 slides on the outer periphery of the shaft 18 because the shaft 18 is fixed to the rotation axis 0. Therefore, when the belt 9 is wound around, the sliding cone wheel 11 moves with respect to the fixed cone wheel 12, but the mounting and removal of the wheel 40 is the same as that of the fixed cone wheel 12. It can be done separately.

FIGS. 1 (C) and 1 (D) are explanatory diagrams of the operation when the second conical wheel, that is, the sliding conical wheel, is removed and loaded with respect to the plane rotation shaft 40. As shown in Fig. 1 (C), when removing the sliding cone wheel 11, the bolt 21 shown in Figs. 1 (A) and 1 (B) is removed, and instead, the larger diameter is used. The removal bolt 51 is newly inserted, and it is fitted with the female screw 18 c previously applied to the inner wall of the shaft 18. After that, the sliding cone wheel 11 is forcibly locked by the tip of the bolt 51 and the sliding cone wheel 11 is composed of a key device consisting of a key 14 and a keyway lid, and a lubrication device 18 e and 18 g. Remove it from the pulley 40 together with the sliding device and the pressurizing device 15.

On the other hand, after completion of the work such as belt exchange, the sliding cone wheel 11 is loaded on the shaft 40 as shown in FIG. 1 (D). At this time, the bolt 21 shown in Fig. 1 (A) is directly tightened and inserted by aligning the opening 25 with the shaft 40, and the keyway 26 with the key 27, respectively. Good, but insert it with a tool such as a pulley (not shown) in advance, and then And stick.

Next, FIGS. 2 (A) and (B) show longitudinal and cross-sectional views of a belt transmission to which the speed change bury according to one embodiment of the present invention is applied, respectively.

In the figure, A is a belt transmission, and B is an induction motor. Reference numeral 9 denotes a belt, and reference numeral 10 denotes a drive-side speed change pulley, which includes fixed and sliding conical wheels 10a and 10b, and is provided on the rotating shaft 30 of the electric motor B. Reference numeral 1 denotes a driven speed change pulley. In this application example, the speed change pulley 1 shown in FIG. 1 is used. The output glaze 40 is supported by the cylindrical portion 43 of the flange body 41 via the bearing 42, and is attached to the load device C indicated by oblique lines at the mounting flange 44.

On the other hand, the housing 50 of the transmission A has an input opening 37 for the input shaft 30 on one flat surface, and an opening 3.8 for the output shaft 40 on the other flat surface. ing. On the same plane as the plane provided with the opening P37, an opening 34 is provided at a position facing the opening 38, and a maintenance lid 31 is provided there to seal the housing chamber. I have. The lid 31 has a cylindrical projection, a communication port 32 between the room 50 and the outside air, and a rainproof and dripproof cover 33.

Further, reference numeral 35 denotes a blower driving pulley integrally formed on the back side of the fixed conical wheel 10a, and a belt 52 is mounted on a side wall of the housing 50 to form a boot of the cooling blower 51. And the rotation of the motor rotating shaft 30 Then, the centrifugal blower 54 is rotated. Cooling air is introduced into the room S0 from the cooling air inlet 55 through the duct 56, and is discharged from the outlet 32 after cooling the belts and pulleys, prolonging the service life of the belt 9. ing.

Reference numeral 45 denotes a speed change control device mounted on the wall surface of the housing 50 and has a function as a part of a device for pressing the speed change pulley 10. An arm 46, a hoist 47, an actuator 48, and a control circuit 49, which includes a potentiometer, are integrally assembled and detachably mounted on the housing wall. You. On the other hand, the arm 46 is separably engaged with the bearing ring 10c, and changes the sliding position of the sliding cone wheel 10b via a bearing.

Therefore, the gear ratio is controlled by the control of the gear change control device 45. The transmission control device 45 is fully automatically controlled by a command signal from an electronic control device (not shown), but the description is omitted here because it is not the subject of the invention. This control device may be a manual type with a handle.

In the transmission using the speed change pulley 1 shown in FIG. 1, the input shaft 30 is guided from one plane of the housing 50 and the output shaft 40 is guided from the other plane, as shown in FIG. I can start. In addition, the belt exchange of the transmission A can be performed while the transmission A is attached to the devour device C. That is, in this application example, since the shafts 30 and 40 are both cantilevered and the burries are mounted on the free ends, the lid 31 is opened, and the above-described transmission control device 45 The belt can be replaced by the procedure described in FIGS. 1 (C) and (D) as long as the belt is removed from the housing 50 in the direction of the arrow.

Fig. 3 (A), (B), (C) and (D) all show a longitudinal sectional view, a transverse sectional view, an exploded view and a pressurizing device of a speed change pulley according to a second embodiment of the present invention. FIG. 10 is a cross-sectional view of the third embodiment. In the figure, the same reference numerals as those in FIG.

In the figure, reference numeral 18 denotes a support shaft having a sliding portion 18, 23 denotes a 0-ring, 18 e denotes an oil spill, 18 g denotes a communication port, 64 denotes a breathing hole, and 65 denotes a suction port. A filter, 66 is a lid, 67 is a fastener, 28 is a cylinder, and 29 is an oil seal. Reference numeral 70 denotes a clamping device, which is formed by an inner member 71, an outer member 72, an annular body 73, and a plurality of immo screws 74. Sliding conical wheel 1 1 further includes a conical plate 1 1 a, a silicon Sunda 2 8, further - ^Klumph;. Consist apparatus 7 0 Prefecture. The conical plate 11a is composed of a contact portion 11b that comes into contact with the belt 9 and an opening cylindrical portion, that is, a boss 11c, and a bearing 75, a bearing on the back side of the boss 11c. Ring 76 and collision ring 77 are assembled. Reference numeral 79 denotes a moving arm for controlling the speed change of the speed change pulley 10 and can be separated * engaged from the notch 76a of the bearing ring. During operation, the arm 79, the bearing 76, and the bearing ring 76 work together with the shift control device 45 of FIG. 2 as a pressurizing device 80 for the sliding conical wheel 11.

In Fig. 3 (A), lubricating oil 8 1 Is entered. While stopped, the oil 81 is stationary as shown in the figure, but during rotation, if it adheres to the inner wall due to centrifugal force as shown in the figure (B), it will always be in the spiral groove and key groove through the communication port 18 g. When the lined oil. The sliding conical wheel 11 slides on the shaft 18 in an integrally assembled state, and this operation is controlled by an arm 79 for speed change. The oil reservoir 18 changes its volume while communicating with the outside air through the breathing tube 64. The arm 79 is configured to be separable from the bearing ring 76, and is attached with the cutting portion 76 a as a guide when the arm 79 is inserted. On the other hand, the oil retention 18e is kept sealed by closing one end of the cylinder 28 with the lid 66. For the key 14, three cylindrical coil spring keys are used.

FIG. 3 (C) is an exploded explanatory view for explaining the trouble of replacing the belt 9 of the speed change pulley 10 configured as described above. In FIG. 3 (A), the clamping device 70 presses the member 72 with the many tapered portions 71a of the inner member 71 and the many tapered portions 72a of the outer member 72 with screws 74. As a result, the member 71 is reduced in diameter and the member 72 receives an increasing force, and the conical plate 11a is firmly frictionally fixed to the outer periphery of the cylinder 28 by this acting force. In this state, since the connection of the rain is strong, it has the same function as that of a conventional variable speed boory sliding wheel formed as an integral vehicle. However, once the belts are converted, the clamps 70 are first released by releasing a plurality of the diodes 74 as shown in FIG. 3 (C) and releasing the contact pressure of the members 71 and 72. New use It can be removed in the direction of the free end of the cylinder 28. At this time, the slots 71b and 72b respectively applied to the members 71 and 72 also return to the original state, and the distance L between the two members is reduced, so that removal is easy. Along with this, the conical plate 11a can be removed together with the bearings 75, bearings 76 and the like.

Therefore, the sliding cylinder 28 is maintained in the shaft portion 18 of the speed change pulley 10 and the belt 9 is completely opened on one side of the belt 9. As a result, FIG. The replacement work can be performed by removing in the direction of the arrow marked with) and loading a new one. At this time, it is needless to say that the operation should be performed with the arm 79 of the pressurizing device 80 partially removed by the dotted line removed.

FIG. 3 (D) is a sectional view of a speed change pulley according to still another embodiment of the present invention. This embodiment shows an example in which a pressurizing device, that is, a spring 15 is provided between the fixed conical wheel 12 and the sliding conical wheel 11. This example shows a case where the conical plate 11a of the sliding cone wheel 11 is fixed to the outer peripheral portion 28a of the cylinder 28 by a fixing device, that is, a plurality of bolts 70. In this case, only the conical plate 11a is left in a state where the cylindrical key structure, the lubrication mechanism, and the pressing mechanism 80 including the guide rod 82 are left integrally with the shaft 18. Can be removed. Therefore, not only when the belt is replaced, but also when the conical plate 11a itself wears out, the main components such as the key structure are left as is, and only the conical plate 11a is replaced. It can also be used when switching.

Industrial applicability

Although the speed change pulleys of the above-described embodiments are all mounted on the free end of a rotating shaft that is cantilevered, if a known sliding mechanism is applied, the present invention can be applied to a dual-bearing rotary transmission. It is easy for those skilled in the art to apply the idea, and in that case, the efficiency of belt exchange can be improved.

In addition, the form of the pressurizing device 80 is not limited to the case using a spring or an arm operation, and it goes without saying that the technical idea of the present invention can be applied to, for example, a known pressurizing device using hydraulic pressure.

Fig. 2 shows a belt transmission of a constant torque characteristic type as two examples of application fields. However, a so-called constant horsepower characteristic in which the transmission control device 45 is engaged with a transmission bullion attached to the output shaft 40 is shown. It is obvious to those skilled in the art that the present invention can be applied to a belt transmission of the type, and that the idea of the present invention can be applied to the transmission pulley on both the driving side and the driven side at the same time. In addition, as an example of the clamp device 70 in FIG. 3, another type may be used, and another known type such as a type that pressurizes and expands a sealing medium may be used.

Furthermore, in the examples shown in Figs. 1 and 2, the conical plate portion of the fixed cone wheel cannot be removed in the example, but on the fixed wheel side, only the conical plate is removed by a clamp device or the like. May be enabled. In this case, the conical plates of the two wheels may be formed of a wear-resistant material such as a ceramic material. According to the present invention, the conical plate of the sliding conical wheel of the two conical plates of the transmission pulley is configured to be separable from the sliding cylinder. The belt does not need to be removed from the rotating shaft, and only the part that contacts the belt is removed by removing only the 円錐 -shaped conical plate from the speed change boogie body.Belt replacement is possible. It is effective for speeding up.

Other aspects, objects, and advantages of the invention will be apparent from a review of the drawings, the disclosure, and the appended claims.

Claims

The scope of the claims

1. The conical plates of the first and second circular wheels are arranged facing each other, and the cylinder of the second circular wheel is moved to move the second circular wheel with respect to the first circular wheel. In a shift bury provided with a sliding device for sliding a key device and a lubricating means between the shaft and the cylinder, the shaft of the first conical wheel is slidably fitted with the shaft of the first conical wheel. The conical plate of the second conical wheel facing the plate is removed from the conical plate of the first conical wheel while the sliding device is still fitted and assembled with the shaft and cylinder. Speed-change pulley that can be separated and assembled independently.

2. The first conical wheel is configured such that the shaft in the region where the cylinder of the second conical wheel is fitted and the conical plate of the first conical wheel are separable, and the second conical wheel is The conical plate of the first conical wheel is detachable independently of the conical plate of the first conical wheel while being integrated with the sliding device in which the shaft and the cylinder are assembled. The speed change pulley according to claim 1.

3. The speed-change pulley according to claim 2, wherein the speed-change pulley is mounted on the rotation supported on both sides of the speed-change pulley.

The speed change pulley is attached to the free end of the cultivation pit, which is cantilevered on one side of the speed change pulley, so that the first conical wheel has a through hole and the shaft has one end. 3. The speed change bury according to claim 2, wherein each of the mounting openings is provided.

5. In the second conical wheel, a pressurizing device for pressing the conical plate in the direction of the circular plate of the first R wheel is provided on the back side of the conical plate taper surface of the second circular wheel. A patent wherein the second conical wheel is separated from the conical plate of the first conical wheel so as to be detachable from the rotary shaft integrally with the pressurizing device and the sliding device. The speed change bridge according to claim 2 or 4.

6. The pressurizing device is formed by a spring, and a locking portion for receiving the pressing force of the spring is provided between the cylinder and the shaft between the cylinder and the shaft. The speed change pulley according to claim 5, wherein:

7. The speed change bury according to claim 5, wherein the pressurizing device is formed by a bearing and a bearing ring that receives an external control force outside the bearing.

8. The second spindle wheel comprises the above-mentioned cylinder, the above-mentioned conical plate formed separately from the cylinder and provided with a through hole at the center for attachment to the cylinder, and A fixing device for attaching to the cylinder so that it does not rotate.The sliding device, which holds the cylinder, is integrated with the shaft by releasing the fixing device. A patent wherein the conical plate of the second conical wheel is separated from the first conical wheel and detachably attached as it is. The speed change bull according to claim 1.

9. The speed change bull according to claim 8, wherein the fixing device is constituted by a bolt which can be operated from a direction of a free end side of the shaft.

10. The speed change gear according to claim 8, wherein the conical plate of the second conical wheel has a boss portion to be inserted into the cylinder, and is constituted by the fixing device or the clamp device. Ri.

11. In the second conical wheel, a pressurizing device for pressing the conical plate in the direction of the conical plate of the first conical wheel is provided on the outer periphery of the cylinder of the second circular wheel, 9. The speed change gear according to claim 8, wherein the conical plate of the second conical wheel is separable from the first conical wheel while the device remains integrated with the sliding device. Bury.

12. In the second conical wheel, a pressurizing device for pressing the conical plate in the direction of the conical plate of the first conical wheel is provided on the back side of the R-cone taper portion of the second circular wheel, The speed change bury according to claim 11, wherein the pressurizing device is detachable from the first cone wheel in a state of being integrated with a cone plate of the second cone wheel.

13. The above-mentioned rotary pulleys cantileverly support the input rotary shaft from the first plane side and the output rotary shaft from the second plane side of the housing for housing the shift pulley. Attach the variable speed buries to the free ends of the The maintenance opening is provided in a portion located in the front direction of the vehicle, and the conical plate of the second conical wheel can be removed from the maintenance opening. The shift buri described.