CN217539520U

CN217539520U - Rice huller manual speed change structure

Info

Publication number: CN217539520U
Application number: CN202220057703.8U
Authority: CN
Inventors: 章洪斌; 袁烨; 许建伟; 戚凌峰
Original assignee: Zhejiang Zhancheng Machinery Co ltd
Current assignee: Zhejiang Zhancheng Machinery Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-10-04
Anticipated expiration: 2032-01-11

Abstract

The utility model discloses a manual speed change structure of a rice huller, which comprises a main shaft and a rubber roller, wherein two groups of belt pulleys are sleeved outside the main shaft, and a binder is connected on the main shaft in a sliding and keying manner; the main shaft is provided with an inner hole, a movable pull rod is arranged in the inner hole, and the pull rod is connected with the combiner; the end part of the main shaft is provided with a sliding block which can slide along the main shaft, and the sliding block is connected with the pull rod; the sliding block is provided with a movable pin, and the outer end part of the movable pin is provided with a pull ring; the main shaft is provided with two positioning holes which are respectively matched with the movable pins. The utility model discloses can realize that the different velocity ratios of rubber roll switch to can realize manual shifting.

Description

Rice huller manual speed change structure

Technical Field

The utility model relates to a rice milling equipment technical field, concretely relates to manual variable speed structure of rice huller.

Background

Rice is mainly hulled by the linear speed difference between rubber rollers of the rice huller. Traditional rice huller shifts through the gearbox and balances the wearing and tearing of rubber roll, but oil vapor and noise in the gearbox have always been a problem. The rice huller without the gearbox is also available in the market, hulling is carried out by a fixed belt wheel and a constant rotating speed ratio in transmission, after long-time work, the rubber roller is subjected to quick roller grinding loss and slow roller grinding loss, the linear speed difference of the rubber roller is caused to change, the rubber roller is not completely used, waste is caused, the rubber roller is manually replaced, and the working strength is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rice huller manual speed changing structure aims at solving the problem among the prior art that above-mentioned background art provided.

The above technical problem of the present invention can be solved by the following technical solutions: a manual speed change structure of a rice huller comprises a main shaft and a rubber roller, wherein two groups of belt wheels are sleeved outside the main shaft, and a binder is slidably connected to the main shaft in a key joint mode so that the binder can be selectively meshed with any belt wheel;

the main shaft is provided with an inner hole, a movable pull rod is arranged in the inner hole, the pull rod is connected with the combiner, and the combiner can be driven to slide along the main shaft when the pull rod moves;

the end part of the main shaft is provided with a sliding block which can slide along the main shaft, and the sliding block is connected with the pull rod; the sliding block is provided with a movable pin, and the outer end part of the movable pin is provided with a pull ring; the main shaft is provided with two positioning holes which are respectively matched with the movable pins, and the sliding block and the two positioning holes are respectively matched and correspond to the combination of the combiner and the two groups of belt wheels.

Preferably, a spring is provided between the movable pin and the slider to provide a tendency for the movable pin to move inward.

Preferably, both ends of the pull rod are connected to the coupling member and the slider by fixing pins, respectively.

Preferably, the main shaft is provided with a strip-shaped external spline, and the combiner is provided with an internal sliding key matched with the external sliding key.

Preferably, the two sides of the combiner are respectively provided with a combiner tooth, and one side of the belt wheel close to the combiner is provided with a belt wheel tooth matched with the combiner tooth.

Compared with the prior art, the utility model, its beneficial effect lies in:

1. the utility model discloses a set up the band pulley of two sets of different speed ratios on the main shaft to select and combine with very fast band pulley or slow band pulley through the joint, make two rubber rolls of rice huller can carry out fast and slow speed work in turn, make both wearing and tearing relatively even.

2. The utility model discloses can realize manual shifting, gearshift adopts pure physics location to combine, can not throw off, just in the preferred embodiment of the utility model, the removable pin can not throw off because of centrifugal force when making it rotatory through setting up the spring.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is a schematic view of a partial three-dimensional structure in the present invention.

Fig. 4 is a schematic structural diagram of the main shaft of the present invention.

Fig. 5 is a schematic structural view of the middle belt wheel of the present invention.

Fig. 6 is a schematic view of the binding of the binder of the present invention.

Fig. 7 is a schematic view of the combination of the middle belt wheel and the combiner.

In the figure: 1. rubber rollers; 2. a main shaft 21, an external spline 22 and a positioning hole; 3. a bearing seat; 4. pulley, 41, pulley teeth; 5. a combiner 51, an internal spline 52 and a combiner tooth; 6. a pull rod 61 and a fixing pin; 7. the sliding block 71, the pin hole 72, the movable pin 73, the spring 74 and the pull ring hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further specifically described by the following embodiments in conjunction with the accompanying drawings.

Example (b): a rice huller manual speed change structure, as shown in fig. 1-7, includes a main shaft 2 supported on a bearing pedestal 3 and a rubber roller 1 fixed on the main shaft 2, two groups of belt pulleys 4 with different speed ratios are mounted outside the main shaft 2 through bearings, and external motor power is transmitted to the belt pulleys 4 through belts; a combiner 5 is arranged between the two groups of belt wheels on the main shaft 2, the combiner 5 is connected with the main shaft 2 through a spline, and the combiner 5 can slide along the main shaft 2, so that the combiner 5 is combined with any belt wheel 4 through slide selection switching, power can be transmitted to the main shaft 2, and the rubber roller 1 is driven to rotate. Specifically, the main shaft 2 is provided with a strip-shaped external spline 21, and the combiner 5 is provided with an internal spline 51 matched with the combiner, so that the combiner 5 can slide along the main shaft 2, and the main shaft 2 can be driven to rotate when the combiner 5 rotates.

In the structure, the inner hole is formed in the main shaft 2, the pull rod 6 is arranged in the inner hole, and the pull rod 6 can slide in the main shaft 2 along the length direction. The pull rod 6 is connected with the combiner 5, so that the pull rod 6 can drive the combiner 5 to slide along the main shaft 2. The opposite front end of main shaft 2 is equipped with the slider 7 that can follow main shaft 2 gliding, and slider 7 is connected with pull rod 6 for slider 7 can drive pull rod 6 when moving and move. Specifically, two ends of the pull rod 6 are respectively connected with the binder 5 and the slider 7 through fixing pins 61, the fixing pins 61 penetrate through the main shaft 2, and the side wall of the main shaft 2 is provided with U-shaped grooves for the movement of the two fixing pins 61.

The slide block 7 is provided with a through pin hole 71, a movable pin 72 is arranged in the pin hole 71, a tab hole 74 is arranged at the end of the movable pin 72 for connecting a tab (not shown in the figure), and a spring 73 is arranged in the pin hole 71 and on the movable pin 72 through a step, the spring 73 provides the movable pin 72 with elastic force having a tendency of moving inwards, so that the movable pin 72 cannot be separated due to centrifugal force when the spindle 2 rotates. The spindle 2 is provided with two positioning holes 22 for the movable pin 72 to pass through, and the matching of the slider 7 and the two positioning holes 22 respectively corresponds to the respective combination of the combining part 5 and the two sets of belt wheels 4, that is, when the movable pin 72 is alternately inserted into the two positioning holes 22 respectively, the corresponding combining part 5 is combined with the corresponding belt wheel 4.

The two sides of the combining part 5 are respectively provided with combining part teeth 52, and one side of the belt wheel 4 close to the combining part 5 is provided with belt wheel teeth 41 matched with the combining part teeth 52.

When the speed ratio needs to be changed, the pull ring pulls up the movable pin 72 to separate from one of the positioning holes 22 of the main shaft 2, then the slide block 7 slides, the movable pin 72 is inserted into the other positioning hole, in the process, the pull rod 6 is driven to move, and the combiner 5 is further driven to slide along the main shaft 2, so that the combiner 5 is selectively meshed with one group of belt wheels, and the speed ratio switching is completed.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. All changes and modifications that may be made by the technical spirit of the present invention to the above embodiments by simple modification are considered to fall within the scope of the present invention.

Claims

1. A manual speed change structure of a rice huller comprises a main shaft and rubber rollers and is characterized in that two groups of belt pulleys are sleeved outside the main shaft, and a combiner is slidably connected to the main shaft in a bonding manner, so that the combiner can be selectively meshed with any belt pulley;

2. The manual transmission structure of claim 1, wherein a spring is provided between the movable pin and the slider to provide the movable pin with a tendency to move inward.

3. The manual speed-changing structure of rice huller as claimed in claim 1, wherein the two ends of the pull rod are respectively connected to the coupling and the slider by a fixing pin.

4. The manual speed changing structure of rice huller as claimed in claim 1, wherein the main shaft is provided with a strip-shaped external spline, and the combiner is provided with an internal sliding key matched with the external sliding key.

5. The manual speed changing structure of the rice huller as claimed in claim 1, wherein the two sides of the coupling are respectively provided with a coupling tooth, and one side of the belt wheel close to the coupling is provided with a belt wheel tooth matching with the coupling tooth.