JPS6237011Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a speed change control device applied to a belt transmission using a variable diameter pulley body, and in particular applies control power to the sliding pulley of the variable diameter pulley body. The present invention relates to a speed change control device that can easily engage and separate from a variable diameter pulley body while accurately transmitting data.

[Prior art]

3A and 3B show a side view and a front view, respectively, of an entire belt transmission to which a conventional speed change control device is applied. In the figure, 1 is a belt transmission, 2 is a main motor, 3 is a worm reducer, 4 is a geared motor consisting of a gear head 4a and a reversible motor 4b, 5 is a speed change controller, 6 and 7 are variable diameter pulley bodies, 8 9 is a transmitter, and 9 is a housing. As is clear from the figure, the power of the main electric motor 2 is applied to the output shaft 3a of the worm reducer 3 via the belt transmission 1, and is taken out as a variable speed output. However, conventional belt transmissions 1 of this type are overwhelmingly used indoors, such as in factories. For this reason, the housing 9 of the belt transmission section has a semi-closed structure in order to suppress heat generation in the pulley body. On the other hand, the speed change controller 5 was also designed as an open type, and each part was designed individually.

〔problem〕

However, with the structure of such a belt transmission 1 and speed change controller 5, a major problem remains. That is, the belt used in the belt transmission 1 is a consumable item and requires frequent replacement and maintenance, but in the configurations shown in FIGS. , removal of the cover 9a of the housing 9, and subsequent disassembly of the pulley bodies 6 and 7, which are extremely complicated operations, are unavoidable, and the maintenance work is completely inefficient. This is because the speed change controller 5 itself is installed completely separately from the housing 9, and the internal engagement type between the speed change controller 5 and the variable diameter pulley body 6,
and the casing and housing 9 of the speed change controller 5
This is due to the lack of consideration given to the mutual relationship between

[Means for solving problems]

In this invention, when sliding a sliding pulley, instead of transmitting rotational power to the pulley body as in the conventional example, the rotational power is transmitted directly to the sliding pulley itself using a U-shaped or Y-shaped shift lever. It has a structure that provides sliding power for linear motion. Furthermore, the shifting operation of the shift lever is provided by a hoisting screw rotated by a reversible motor, which provides linear motion in the same direction as the sliding direction of the sliding pulley, allowing it to slide stably even when a large load is applied. A guide shaft is provided at the top. Furthermore, both the hoisting screw and the guide shaft are supported by a support frame, which is further held by a frame, and this frame is fixed to the outer wall of the housing.

[Effect]

By adopting the above structure, when the motor, frame, and support frame are assembled together,
This speed change control device can be easily installed and removed from the housing as an integral unit only by operating the flange portion of the frame. This makes it possible to simplify and improve the efficiency of maintenance work such as belt replacement.

Furthermore, when hoisting the sliding pulley, a large load is applied to the shift lever, and the load is applied to the shift lever, the support frame via the guide shaft and the hoisting screw, and the load is further applied to the support frame. Since the load is distributed and absorbed by the outer wall of the housing via the flange portion of the frame, the speed change control operation can be performed stably.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a partial sectional view of a belt transmission equipped with a speed change control device of the present invention for speed change control of a variable diameter pulley device on the driven side of a known belt transmission.

In the figure, 10 is a housing of a belt transmission, and a flange portion 11 of a main electric motor (not shown) is attached above. Furthermore, the rotating shaft 12 of the main motor 11 is inserted into the room through the opening 13 through the flange portion 11, and a variable diameter pulley body 2 consisting of fixed and sliding pulleys 21 and 22 is inserted into the rotating shaft 12.
0 is attached in a cantilevered manner. The sliding pulley 2 is connected to the support shaft portion 25 of the fixed pulley 21.
As the sliding contact portion 26 of No. 2 slides up and down, a belt (not shown) held by the conical taper portion of each pulley 21 and 22 is moved between the pulleys 21 and 22.
The radius of the contact circumference is continuously changed.
As a result, the speed ratio of the belt transmission can be controlled.

Next, the configuration of the speed change control device 60 will be explained. The speed change control device 60 includes three parts, a circuit panel part 30, a frame part 40, and a shift lever support part 50, each of which is constructed as an integral assembly.

First, the circuit panel section 30 has a shape that protrudes from the housing 10 in this embodiment. A T-shaped panel 33 to which a circuit device 34 is attached is arranged in a space surrounded by an outer cover body 31 and an outer cover 32 for maintenance work from the outside. The circuit device 3 provided on the flat surface of this panel 33 in the outdoor direction
4 is composed of a phase advance capacitor 35, a potentiometer 36, a limit switch (not shown), and a shift position detection device 37 consisting of a rotation screw 37a and an adjustment piece 37b. on the other hand,
The rotation screw 37a is connected to the second power transmission mechanism. In this embodiment, the second power transmission is the gear 3
8 and 19. This rotation screw 3
The rotational power of 7a is further transmitted to a pair of gears 37c, 37.
d to the potentiometer 36.

Next, the frame portion 40 will be explained. Frame part 4
0 is a frame 4 configured in a special shape to form a space for housing a geared motor in which a motor 15 and a gear head 16 are integrated.
It consists of 1. The frame 41 is made of sheet metal and has the following configuration. That is, the flange portion 41 has a mounting hole 41a for installing the outer cover body 31 and a through hole 41b for installing the above-described integral assembly on the wall surface of the transmission housing 10 via the outer cover body 31.
d, and a geared motor installation space 41e formed by protruding the inside of this flange portion 41d in a dish shape.
, a flat part 41f that holds the support frame 42 of the shift lever 51, and a connecting part 41 that connects the flat part 41f and the flange part 41d and transmits the bending moment applied to the flat part 41f to the flange part 41d.
It consists of g. Note that instead of the plane part 33c of the T-shaped panel 33, there is a plane part of the motor installation part which is perpendicular to the flange part 41d and the plane part 41f and has an opening in the center that passes through the output shafts of the geared motors 15, 16. is configured to protrude from the connecting portion 41g and the flat portion 41f, and the panel 33 is
It may be made into a flat shape without making it into a mold. Further, in this case, it is also easy to support the flat panel on the frame 41 side. A gear 19 and a sprocket 17 for the first and second power transmitters are installed on the output shaft of the geared motor, and the gear 19
further meshes with a rear gear 38 to form a second power transmission. Also, sprocket 17 is
It is interlocked with the sprocket 18 via a transmission body, and forms a first power transmission device. Note that gears may be used here.

Further, the shift lever support portion 50 is attached to the frame 41.
A support frame 42 fixed to the back surface of a flat part 41f by four screw parts 43, a hoisting screw 54 installed inside the support frame 42, and guide shafts 57a, 57b.
and a shift lever 51. This shift lever 51 is formed into a U-shape or a Y-shape as a whole, and has through-holes in which rubber seals (not shown) are installed at the upper and lower ends of the inside, respectively, and pass through the guide shafts 57a and 57b. ing. The center of one end of the shift lever 51 is screwed into a winding screw 54 via a pusher 53 which is internally threaded. The other free end is bifurcated in a Y- or U-shape, with an engaging end 5 at the tip.
8 is formed. Since the above-mentioned sprocket 18 is installed on the hoisting screw 54, the shift lever 51 slides up and down on the hoisting screw 54 and the guide shafts 57a and 57b depending on the direction of rotation of the motor 15, and the tip The engaging end rises and the sliding pulley 2
2 is slid upward, thereby controlling the speed change. Note that the U-shaped engagement end 58 of the shift lever 51 is connected to the support ring 2 installed via a bearing 23 provided around the sliding portion 26 of the sliding pulley 22.
It engages with the engagement groove 28 provided with the groove 4. Note that it may be directly engaged with the back side stepped portion of the support ring 24, and an intervening body 27 may be installed if necessary to adjust the amount of sliding of the sliding pulley 22. In addition, in the speed change control device 60 of this embodiment, the axis A of the hoisting screw 54,
Although an example has been shown in which the shafts 57a and 57b are arranged in a straight line so that the shafts B are almost parallel to the housing wall surface 10, only one guide shaft is installed in the center and the shafts B and the winding The axis A of the upper screw 54 and the axis C of the pulley rotating shaft 12 are located at opposite ends of each other, and are aligned in a straight line so that the axis centers are aligned perpendicularly to the housing wall surface 10. It may also be arranged to prevent the occurrence of mechanical strain.

As described above, the transmission control device 60 of this embodiment has the circuit panel section 30 arranged on the outdoor side and the shift lever support section 50 arranged on the indoor side, centering on the frame section 40 surrounding the geared motor. Moreover, these three parts are the circuit panel 30,
Since the frame part 40 and the support frame 50 are integrally assembled in this order, the screw holes 31a provided in the flange part 31b of the outer cover 31 and the frame 41
As long as the screw holes 41b provided in the housing 10 and the screw holes 41b are opened at the same position, the tip of the shift lever 51 of this integrated assembly can be inserted into the room through the hole 14 provided in the housing 10, and the flange portion 31b ,4
1d can be glued to the installation surface 45 from outside using screws 31c. At this time, if the tip engaging portion 58 of the shift lever 51 is set to a predetermined length from the indoor end surface of the flange portion 41a or the installation surface 45, the engaging portion 58 can be attached to the variable diameter pulley body 20. The engaged state is automatically obtained by pressing the button. Furthermore, it is easy to remove the integral assembly 60 from the wall surface of the housing 10 by performing the reverse procedure to that described above, and there is no need to disassemble the integral assembly 60 itself at all. Work efficiency is significantly improved. In addition, when performing maintenance work only on the circuit panel, such as when changing the speed range, the lid
Since it is only necessary to open 2, maintenance work can be made more efficient in this respect as well.

[Other Examples]

In the above-described embodiment, the panel 33 is supported inside the outer cover body 31, but there is no need to be limited thereto, and suitable mounting hardware may be placed on the frame 41 to support the panel 33. Further, in this embodiment, the first power transmission section is shown as a chain and a sprocket, but it may also be a timing belt or a pulley. In addition, by installing a gear on the geared motor shaft and the rotating screw 37a, further providing an intermediate gear between them, and also installing a gear on the rotating screw 37a, direct power is generated only by the combination of multiple gears. It may be communicated. Furthermore, although the variable diameter pulley body 20 is a driving pulley in this embodiment, it may be controlled by connecting a driven pulley (not shown) to the speed change control device 60. Further, it is also easy to construct the frame 41 and the support frame 42 as an integral casting.

Furthermore, in this embodiment, the tip of the shift lever 51 is Y-shaped or U-shaped; however,
The support ring 24 does not necessarily need to be pressed at two points, but may be engaged and pressed at one point. In that case, it does not have to be Y- or U-shaped, and may be rod-shaped.

[Effect of idea]

According to this invention, the tip engaging portion of the shift lever is separably engaged with the sliding pulley of the variable diameter pulley body, and the support body holding the shift lever is integrated with the frame. Because there is
There is an advantage that the entire speed change control device can be easily engaged and separated from the pulley body in the housing. As a result, maintenance work such as belt replacement is significantly simplified.

In addition, when the speed change control device is assembled as one piece, the large load applied from the sliding pulley to the shift lever is applied to the flange of the frame via the support frame and frame, and is further absorbed and dispersed by the housing wall. If it is strengthened by iron casting or the like, extremely stable speed change control will be possible.

Furthermore, since the entire speed change control device is compact and integrated, and is completely housed within the housing, it will not be affected by temperature and humidity even if it is exposed directly to the atmosphere due to outdoor installation, eliminating the risk of corrosion. This has achieved what was conventionally thought to be impossible for belt transmissions to be used even under adverse atmospheres such as raindrops, water vapor, or dust. Moreover, since it has achieved full automation through remote control, it has great industrial utility value.

[Brief explanation of drawings]

FIGS. 1A and 1B are longitudinal and cross-sectional views of a transmission control device according to an embodiment of the present invention, respectively, and FIGS.
The figure shows a perspective view of a shift lever support frame and a support ring used in the same embodiment. 3A and 3B show a side view and a front view, respectively, of an entire belt transmission using a conventional speed change control device. In the figure, 10...belt transmission housing, 15
... Reversible motor, 16 ... Gear head, 20 ... Variable diameter pulley body, 30 ... Circuit panel section, 34 ... Circuit device, 36 ... Potentiometer, 40 ... Frame section, 41 ... Frame,
50...Shift lever section, 51...Shift lever, 60...Shift control device.

Claims (1)

[Claims for Utility Model Registration] (1) In a speed change control device that controls a speed ratio by sliding a sliding pulley of a variable diameter pulley body, a reversible motor is mounted on the outdoor side of a frame whose flange is attached to the outer wall of a housing. and a support frame for supporting a shift lever that is separably engaged with the sliding pulley is attached to the indoor wall surface, and the support frame also has a guide shaft that guides the sliding direction of the shift lever. and a winding screw that is screwed into a threaded portion provided on the shift lever to transmit control power of the motor to the shift lever. (2) The tip engaging part of the shift lever mentioned above is Y-shaped or U-shaped.
The speed change control device according to claim (1) of the utility model registration, characterized in that it has a letter shape.