JPH03106452A - Speed converting apparatus in rubber roll type huller - Google Patents

Abstract

PURPOSE:To convert a high speed rubber roll to a low speed while converting a low speed rubber roll to a high speed by one-action operation by sliding a shaft cylinder having a variable speed gear mounted thereto before and behind from the outside of a machine even during hulling work. CONSTITUTION:A power shaft 4 is provided between respective rotary shafts 2a, 2b having opposed hulling rubber rolls 1a, 1b. A shaft cylinder 3 having variable speed gears 5-7 mounted thereto is fitted in the power shaft 4 by a key so as to be slidable before and behind and low speed small gears 5, 6 are mounted to the front and rear parts of the shaft cylinder 3 and a high speed large gear 7 is mounted to the middle part thereof. When the shaft cylinder 3 recedes, the small gear 5 is meshed with the gear of the rotary shaft 2a and the large gear 7 is meshed with the gear of the rotary shaft 2b and, when the shaft cylinder 3 advances, the large gear 7 is meshed with the gear of the rotary shaft 2a and the small gear 6 is meshed with the gear of the rotary shaft 2b. As a result, by one-action operation, a high speed rubber roll is converted to a low speed and a low speed rubber roll is simultaneously converted to a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is a device that converts the speeds of high-speed and low-speed rubber rolls for hulling rice that are opposed to each other on the left and right sides. (Prior art) Conventionally, paddy is fed falling between high-speed and low-speed rubber rolls facing each other on the left and right, and is removed by rubbing between the rubber rolls with different speeds. The outer rubber layer of the rubber roll on the high-speed side wears out faster than the rubber roll on the low-speed side, reducing its diameter and weakening the circumferential speed. The rubber roll on the low speed side was replaced with the same shaft on the low speed side, and the side plate was reattached to the case. (Problem to be Solved by the Invention) In this way, exchanging the rubber rolls on the high-speed side and the low-speed side requires a tremendous amount of effort and time. The present invention improves this and
The purpose of this system is to convert the high speed rubber roll to low speed with a single touch, and at the same time increase the speed of the low speed rubber roll, even during hulling work. (Means for Solving the Problems) The present invention as set forth in claim 1 is provided in the case where each rotating shaft and a power shaft to which high-speed and low-speed rubber rolls for hulling are attached are rotated by interlocking with gears, and when the opposing hulling rubber roll la, l
With
Fit the shaft cylinder 3 for attaching the transmission gear to the power vehicle 4 with a #1% key so that it can be slid freely. Therefore, small gears 5 and 6 for low speed are attached to the front and rear of the shaft cylinder 3, and a large gear 7 for high speed is installed in the middle, so that when the shaft cylinder 3 moves backward, the front small gear
l# wheel 5 is a gear on one rotating shaft 2a. Further, the intermediate large gear 7 meshes with the gear on the other rotating shaft 2b to transmit power, and when the shaft 03 moves forward, the intermediate large gear 7 meshes with the gear on the other coaxial shaft 2a to transmit power. The small gears 6 mesh with the gears on the other rotating shaft 2b to transmit power. Further, the present invention as described in claim 2 is a case in which the rotating shafts and the power shaft to which high-speed and low-speed rubber wheels for hulling are attached are rotated by interlocking belts, and the opposing rubber rolls for hulling
a. Large and small pulleys 3a and 3b are respectively fitted onto the rotating shafts 2a and 2b to which the rotating shafts 1b are attached, with their phases being changed. The key fits into the self-sliding flower. In this way, a timing belt (toothed belt) ■ is suspended between the pair of pulleys attached to the power shaft 4 and the large and small pulleys loosely fitted to each rotating shaft, and the clutch C is slid forward to move the large and small pulleys. or slide backwards to mesh with another large or small pulley. (Function) When one of the high-speed rubber rolls lb wears out. a Slide the shaft cylinder 3 or clutch C back and forth from the outside. Then, when the shaft cylinder 3 shown in FIG. 1 (A) is advanced as shown in FIG. Also, the rear small gear 6 meshes with the other rubber roll shaft 2b, which had been running at high speed, and rotates at a low speed. Then, the clutch C shown in Fig. 3 is moved backward, and each rotation shaft 2
When meshing with the rear large pulley 3a and small pulley 3b that are loosely fitted into the rear pulleys 3a and 2b, one rubber roll shaft 2a, which has been rotating at a low speed, will rotate at a high speed, and the other rubber roll shaft, which has been rotating at a high speed until now, will rotate at a high speed. 2b rotates at low speed. (Embodiment) An embodiment of the present invention as set forth in claim 1 will be described as shown in FIGS. 1 and 2. Opposing rubber roll for hulling 1a. 1b attached to each rotating shaft 2a. A power shaft 4 is installed in the middle of 2b, and a key is fitted onto the power shaft 4 so that the cylinder 3 can be slid back and forth. Small gears 5 and 6 for low speed are attached to the front and rear of the shaft cylinder 3, and a large gear 7 for high speed is attached to the center thereof. Then, when the axle 3 is operated from outside the machine and the axle 3 moves backward along the power shaft 4 as shown in FIG. a-le vehicle 2a
In addition, the middle high-speed large gear 7 meshes with the gear attached to the other rubber roll shaft 2b to reduce the speed of one rubber roll la and the other rubber roll l.
Rotate b at high speed. Next, as shown in FIG. 1 (opening), when the shaft cylinder 3 moves forward along the roller shaft 4, the intermediate high-speed large gear 7 passes through the floating gear 8 and then connects to the gear attached to one rubber roll shaft 2a. Also, the rear low-speed small gear 6 meshes with the gears attached to the other rubber roll shaft 2b, so that one rubber roll la
is rotated at high speed and the other rubber roll lb is rotated at low speed. Further, the embodiment of the present invention shown in claim 2 is illustrated in FIGS.
The explanation of Figure S6 is as follows. Opposing rubber roll for hulling 1a. Each rotation shaft 2a, 2 with attached 1b
Large and small pulleys 3a and 3b each having teeth on the outer periphery
are loosely fitted with alternating phases, and a clutch C is fitted with a key in the middle of the large and small pulleys 3a and 3b on each rotation axis so as to be slidable back and forth. Two timing belts (toothed belts) (8a) are suspended over a pair of pulleys attached to the power shaft 4 and large and small pulleys 3a and 3b loosely fitted to each rotating shaft.8a indicates an idle pulley. Then, operate clutch C from outside the aircraft,
As shown in FIG. 3, when the clutch C moves forward, the small low-speed pulley 3b of the rotating shaft 2a and the large high-speed pulley 3a of the rotating shaft 2b rotate the rotating shafts 2a and 2b, respectively. Rubber roll 1a rotates at low speed, and rubber roll lb rotates at high speed. When the clutch C moves backward, the high-speed large pulley 3a on the same shaft 2a and the low-speed small pulley 3b on the rotary shaft 2b mesh with the clutch C, and the rubber roll la moves at high speed. The rubber roll 1b rotates twice at low speed. At this time, each rotation shaft 2a, 2b is connected to a power vehicle 4 as shown in FIG.
Because the power is transmitted and rotated by a timing belt (toothed belt), the belt transmits power to the rotating shaft without stretching compared to a flat belt, and does not generate noise compared to a continuous chain. , does not require lubrication, rotates reliably, and both rubber rolls la and l rotate at the required high or low speed.
Rotate b. In addition, in the case of small-diameter rolls such as the 2 and a half inch or 3 and a half inches of the Momizurikawa rubber roll, the rotation speed on the low speed side is 930 per minute.
The rotation speed is 1200 rpm on the high speed side, 800 to 850 rpm on the low speed side for large diameter rolls such as 6 inches, and 1050 to 1100 rpm on the high speed side. If the diameter of the rubber roll used at the rice center reaches 10 inches, the low speed side will rotate at 740 revolutions per minute, and the high speed side will rotate at 970 revolutions per minute.
It is a rotation. Therefore, the present invention as set forth in claim 2 reliably transmits power from the power shaft 4 to each rotating shaft 2a, 2b by means of a timing belt V, rotates each rubber roll for hulling at a required rotation speed, and reliably removes paddy. accompany. (Effects of the Invention) According to the present invention, even during rice hulling work, the shaft @3 or the clutch C with the speed change gear attached to it is slid back and forth from outside the machine, and the high-speed rubber roll that has been worn out by touch is removed. Since the low-speed rubber roll, which has not been worn out yet, rotates at a high speed, the labor of taking the conventional roll out of the machine and converting it can be omitted, and in the invention of claim 2, a timing belt (belt with Iki) is used. As a result, it does not stretch as compared to conventional flat belt interlocking. It is silent compared to a chain-linked system, does not require oiling, and has the effect of rotating both rice hulling rubber rolls to the required rotation speed and reliably removing entrainment.

[Brief explanation of drawings]

1rIIJ is a plan view of the main part of the embodiment of claim 1 of the IJJ of the present invention, and FIG. 2 is a front view of FIG. 1(A). 3 to 6 are a plan view, a front view, an action diagram of a clutch, and an enlarged diagram of a timing belt (toothed belt) of the embodiment of claim 2 of the present invention. la. lb is a rubber roll for hulling rice. 2a and 2b are the rotating shafts, 3 is the shaft cylinder, 3a is the large pulley, 3b is the small pulley, 4 is the power shaft, 5 and 6 are the small gears for low speed, 7 is the large gear for high speed, C is the clutch, and ■ is Timing belt (toothed belt).

Claims (1)

[Scope of Claims] 1. A power shaft is provided in the middle of each rotation shaft to which opposing rubber rolls for hulling are attached, and a shaft cylinder equipped with a speed change gear is key-fitted to the power shaft so as to be slidable back and forth. ,The shaft cylinder is equipped with small gears for low speed at the front and rear, and large gears for high speed in the middle, and when the shaft cylinder moves backward, the small gear at the front becomes the rotation gear of one rubber roll. In addition, the intermediate large gear meshes with the gear on the rotation shaft of the other rubber roll, and when the shaft cylinder moves forward, the intermediate large gear meshes with the gear on the rotation shaft of one rubber roll, and also meshes with the gear on the rotation shaft of the other rubber roll. A speed conversion device for a rubber roll type huller, characterized in that the small gears mesh with the gears on the rotation axis of the other rubber roll. 2. Loosely fit large and small pulleys with alternating phases on each rotating shaft to which opposing rubber rolls for hulling are attached, and a clutch C is fitted with a key between the large and small pulleys on each rotating shaft so that it can freely slide back and forth. Then, a pair of timing belts (toothed belts) are suspended between a pair of pulleys attached to the power shaft and a large and small pulley loosely fitted to each rotating shaft, and the clutch C is slid back and forth. A speed conversion device for a rubber roll type huller that is characterized by meshing with large and small pulleys on each rotating shaft.