KR200214512Y1 - Reverse rotation automatic prevention device of grain conveying bucket elevator - Google Patents

Abstract

(1) The technical field to which the invention described in the claims belongs.

The bucket elevator which feeds the below grain to the top for agricultural processing and relates to a device which automatically prevents the reverse rotation in case of sudden power failure.

(2) The technical problem that the invention is trying to solve.

Conventional anti-rotation device has a problem of high friction and noise, complicated structure or expensive.

(3) Summary of solution of design.

Engagement opening 16 provided with sliding metal 4 and friction cover 7 and 7a on the drive shaft 2 and bitten or spaced from ratchet gear 3 according to the action of friction cover 7 and 7a. In the forward rotation, the locking hole 16 is spaced apart from the ratchet gear 3 and the ratchet gear 3 is engaged only in the reverse rotation.

(4) Important uses of the design.

Simple construction can prevent reverse rotation and extend life by reducing noise and friction.

Description

Reverse rotation automatic prevention device of grain conveying bucket elevator

The present invention is a bucket elevator that is used to feed the next grain upwards, such as grain processing equipment to the next process, the bucket elevator is rotated reversely when the operation is stopped due to the power cut during feeding It relates to a device for preventing the.

As is well known, when supplying the grain to the top, the drive pulley is installed at the top and the bottom, and the bucket is connected to the belt so that the bucket rises, the grain is poured up, and the grain is inverted again and poured into the discharge passage.

However, when the power is cut off after the above supplying operation is completed, there is no problem because the belt stops as it is. However, if an unexpected situation such as a power failure occurs during the supplying operation and the power supply is stopped, the rising part of the belt The buckets are all full of grain, so there is a significant amount of unloading, which causes the belt to rotate in reverse, causing the grain to pour down.

Therefore, due to this reverse rotation, the overall part of the device is applied to shorten the lifespan, and the motor may be burned if it is forcibly restarted with a lot of grains accumulated in the lower part. Uncomfortable inconveniences such as having to restart later was accompanied.

In order to prepare for the above problems, as shown in FIGS. 6A and 6B, the conventional rotating elevator apparatus is also configured. Referring to FIG. 6A, after the ratchet gear 51 is installed on the rotation shaft 50, the ratchet gear 51 is installed. On the outer surface of the), the clasp 53 is configured to be mounted while receiving the elasticity of the spring 54. In the forward rotation, the clasp 53 passes over the ratchet gear 51, and in the reverse rotation, the clasp 53 is caught. (52) is caught so that the reverse rotation is prevented,

In this case, since the clasp 53 continues to ride over the outer surface of the ratchet gear 51 during normal operation, the noise and friction are very severe and the life is shortened.

6B, the curved portion 62 is formed in the recess 61 of the ratchet gear 3, the hole 63 is formed in the curved portion 62, and the spring 64 is inserted into the spring 64. The roller 65 is inserted to be supported. In this case, the structure is complicated and difficult to manufacture, which requires a lot of manufacturing costs, and the roller 65 continues to rub between the housing 66 and the engaging portion 61. As it must be rolled while the wear is a lot of problems are the same.

In addition, it is possible to purchase and use commercial parts such as bearings that rotate in only one direction, but since the price is too expensive, there was a discontinuity leading to an increase in manufacturing cost.

The present invention devised in view of the above problems is a simple configuration when constructing a bucket elevator, and at the same time to configure the anti-rotation device and at the same time to prevent the friction noise and the reverse rotation to make the configuration of the locking action spaced apart Only when the purpose is to automatically prevent the reverse rotation.

1 is a partial front view of an elevator showing an installation state of the present invention

Figure 2 is an enlarged view of the main portion showing the forward rotation state of Figure 1

Figure 3 is an operation state when preventing the reverse rotation of Figure 2

4 is an enlarged cross-sectional view taken along the line A-A 'of FIG.

5 is an enlarged cross-sectional view taken along line B-B 'of FIG.

Figure 6a, Figure 6b is a front view of a conventional reverse rotation prevention device

※ Explanation of code for main part of drawing

(1) Bucket Elevator (2) Drive Shaft

(3) Ratchet Gears (4) Sliding Metals

(5) key (6) main part

(7) (7a) friction cover (8) hole

(9) Coupling protrusion (10) Bolt

(11) Compression Springs (12) Nuts

(13) Arm (14) Action Pin

(15) Bracket (16) Hanger

(16 ') Jaw (17) Pin

18 craftsman

According to the present invention, a ratchet gear (3) is installed on the drive shaft (2) of the bucket elevator (1) as known, but oilless metal is not required to inject lubricant into the end of the drive shaft (2) next to the ratchet gear (3). A sliding metal 4 made of material was installed as the key 5 so that the drive shaft 2, the ratchet gear 3, and the sliding metal 4 were simultaneously rotated.

In the sliding metal 4, the recess 6 is formed at the center of the outer surface, and then the friction cover 7 and 7a are coupled to the recess 6, each of which is divided into semicircular shapes, but the friction cover 7 and 7a are coupled to each other. After forming a gap (b) at the time of the opposite ends to form a coupling protrusion (9) having a hole (8) and then insert a long bolt (10) and the compression spring (11) to the bolt (10) ) And then tighten the nut 12 so that the friction cover 7 and 7a are brought into close contact with the sliding metal 4 by the elastic force of the compression spring 11.

The friction cover 7a on one side protrudes the arm 13 to form an action pin 14 at the end, and a bracket 15 is fixed directly below the action pin 14 to hold the hook 16. Install, but the pin 16 is coupled to the engaging port 16 to be movable, the locking port 16 is formed in the center of the ratchet gear (3) while the locking jaw (16 ') while the inclined long hole in the center (18) was formed so that the working pin 14 protruding from the arm 13 was inserted.

In the drawings, reference numeral 20 denotes a driving motor, 21 a driving chain wheel, 22 a chain, 23 a bucket chain, 24 a bucket, 25 a discharge passage, 26 a stop ring, 27 a washer, and 28 a set screw.

Looking at the operation of the present invention having such a configuration, the drive shaft (2) when the first latch 16 is caught in the ratchet gear (3), the bucket elevator (1) is operated to scoop up the grain And the sliding metal (4) is rotated and the sliding metal (4) and the friction cover (7) (7a) is not in a state of being bonded to each other, but the friction buckle (7) (7a) is a state of friction by the elastic force of the compression spring (11) ) The force to rotate in the same direction as the sliding metal (4) is acting.

Therefore, when the arm 13 rotates at an angle and the action pin 14 protruding from the end thereof rotates to the upper end of the long hole 18, the arm 13 cannot rotate any more, thereby maintaining the state of the friction cover 7 and 7a. The catch 16 is to be flipped in the opposite direction of the ratchet gear 3 to explain the above operation in more detail as follows. That is, since the inclination angle of the long hole 18 from the horizontal is inclined at an angle smaller than the moving position when the working pin 14 is rotated by the length of the long hole 18 about the drive shaft 2. 14 is rotated while the inclined long hole 18 is raised while the locking hole 16 is rotated about the pin 17 supported by the bracket 15 in the opposite direction of the ratchet gear 3. Since the retracted opening 16 is kept spaced apart from the ratchet gear (3).

During normal operation, the bucket 24 and the bucket chain 23 rotate the drive shaft 2 by the weight of the drawing grain so that the power supply is interrupted due to a sudden power failure during the transfer of the grain. When the ratchet gear (3) and the sliding metal (4) start to reverse rotation, the friction cover (7) (7a) and the arm (13), which are coupled to the sliding metal (4), are also flipped in the opposite direction from the beginning, and thus the working pin As the 14 descends the long hole 18 of the catch 16, the catch 16 is folded over to the ratchet gear 3, and the catch 16 'of the catch 16 is latched. The gear 3 is caught and the reverse rotation is stopped.

When the power is supplied again to start the operation, as described above, the action pin 14 stands up the catch 16 so that the forward rotation is not impeded. However, as described above, when the supply operation is completely completed and the bucket 24 is empty as described above, even if the power supply is stopped, the weight does not act on the bucket 24, so that the rotation is not reversed. Does not work.

Since the sliding metal 4 continues to rub against the friction covers 7 and 7a during normal operation, wear occurs little by little, but the friction spring covers the friction cover 7 even though wear occurs due to the force to be in close contact with each other by the compression spring 11. The function of (7) (7a) remains unchanged.

As described above, the present invention is very simple to prevent the reverse rotation of the bucket elevator can be manufactured at a low cost and at the time of the forward rotation the latch 16 is separated from the ratchet gear (3) noise due to friction In particular, the oilless metal can be used to improve the working environment, such as the anti-rotation prevention device, which is kept dirty by the use of lubricant, while maintaining a long service life without supplying additional lubricant. It is devised.

Claims (1)

In constructing a device for preventing the reverse rotation on the drive shaft (2) of the bucket elevator (1), at the end of the drive shaft (2) by installing the sliding metal (4) and the sliding metal (4) as a key (5) Rotate simultaneously with the drive shaft (2) and ratchet gear (3), but form a recess (6) in the center of the outer surface of the sliding metal (4), divided into semi-circular shapes here, and a slight gap when joining (b) The friction buckets 7 and 7a to be opened, and the friction covers 7 and 7a form engaging protrusions 9 having holes 8 at opposite ends thereof, and the length of the holes 8 Long bolts 10 are coupled to the compression springs 11 and the nuts 12 so that the friction covers 7 and 7a are brought into close contact with the sliding metal 4 and the arm is provided at one side of the friction cover 7a. (13) protruding to form a working pin (14) at the end, and immediately below the working pin (14) to fix the bracket (15) and then install the catch 16 to the pin (17) By making it possible to move, but the locking hole 16 is formed by the locking jaw (16 ') in the direction of the ratchet gear (3) and the inclined long hole (18) formed in the center to the action pin 14 is inserted, Automatic locking device for reverse grain bucket elevator, characterized in that the latch 16 is spaced apart from the ratchet gear (3) during the forward rotation and caught by the ratchet gear (3) only in the reverse rotation.