KR20000003748U - Power Transmission Blocker of Rotating Body - Google Patents

Abstract

The present invention relates to a device for quickly cutting off power transmission when an overload of a rotating body occurs.

One side of the driven coupling 120 has a plurality of mounting holes 10a formed therethrough and includes a base cover 12 inserted therein as a fixing bolt 14, and a screw hole 12b of the base cover 12. A ball having a set screw 13 which is assembled to the lock nut 15 and fixed as a lock nut 15, and is fitted into the mounting hole 10a so that one end and the front end of the set screw 13 come into contact with each other and a locking groove 16a is formed at the rear end thereof. Steel balls are mounted in the driven part 10 to which the base 16 is mounted, and a plurality of mounting holes 20a formed through one side of the drive coupling 110 and in contact with the rear end of the ball base 16. 21 is provided with a ball pocket 22 disposed in the inner hole 22a, and the driving coupler has a casing 29 through which a circular hole 29a coinciding with the inner hole 22a is formed as a fixing bolt 29b. Mounted on one side of the ring 110, the circular hole (29a) is mounted to the shaft member 26 of a predetermined length in contact with the steel ball 21 and the front end And a plurality of guide balls (27) between the slider (25) and the guider (28) disposed on the annular projection (26a) protruding from the rear end outer circumferential surface of the shaft member (26) and fastened to the tip of the circular hole (29a). Between the adjustment screw 23 and the round jaw (26a) is a drive block for power transmission of the rotating body, characterized in that it comprises a drive unit 20 equipped with a disk spring (24).

Description

Power Transmission Blocker of Rotating Body

The present invention relates to a device for quickly cutting off power transmission when an overload of a rotating body occurs. More specifically, it is installed between a coupling member that transmits rotational force from a driving side to a driven side, so that power transmission can be cut off quickly and safely when an overload occurs. It is possible to prevent further damage to the equipment, and easy to return to the original for power transmission relates to a power transmission blocking device of a simple to use rotor.

In general, as shown in Figures 1 and 6, in order to manufacture the product using the rotational force in the rolling mills of various industrial sites and steelworks, it is equipped with a single-acting or interlocking rotary body 100, such a rotary body ( 100 is a drive coupling 110 is connected to the drive shaft of the drive motor (not shown) and the drive coupling 110 is connected to it and driven driven to reduce the speed and accelerate the driven shaft 122 by receiving a rotational force driven rotation ( 120).

On the other hand, such a conventional rotating body 100 is not equipped with a separate device to cut off the power by separating the power transmission structure between the drive, driven coupling 110, 120 so as to protect the equipment in the event of an overload occurs. Alternatively, as shown in FIG. 1, the shear pins 130 having the concave cut portions 133 formed in the center of the drive pins 115 and 125 formed through the driving, driven coupling 110 and 120, respectively. By inserting the cutting unit 133 is driven, by positioning the interface between the driven coupling 110, 120, when the overload occurs in the driven shaft 122, the concentrated stress is generated in the cutting unit 133 It was broken so that the drive, driven coupling 110, 120 of the binding can be cut off the power transmission fundamentally.

However, even when a minute load occurs that does not interfere with the operation of the equipment, the shear pins 130 are frequently damaged, causing power interruption to occur frequently, greatly reducing work productivity, and driving the driven shear pins 130 are driven and driven. If it is fixed to the interface between the coupling 110, 120, it is very difficult to replace the new one after removing it, there was a problem that takes a lot of maintenance time.

In addition, when the shearing frequency of the shear pin 130 is increased to increase the shear time at the cutout portion 133 of the shear pin 130 to prevent a long idle time, material defects during equipment operation, Even if an overload caused by a cause such as a poor rotation of the inlet guide roller or a poor speed control of the rolling mill occurs at the rated abnormality, the cutting portion 133 of the shear pin 130 may not be appropriately broken. If the operation is continued at this, there was a problem that the excessive force is applied to the reduction gear connected to the driven shaft 122, the accelerator and the drive motor connected to the drive shaft connected to the drive shaft, causing secondary equipment damage and serious equipment failure. .

Therefore, the present invention is to solve such a conventional problem, the purpose is to easily adjust the appropriate torque, the power cut is made quickly and accurately to prevent damage to the equipment due to the overload in the single-acting, interlocking equipment, overload It is intended to provide a power transmission cut-off device for a rotating body that can quickly return to a power transmission position after elimination of a factor, thereby minimizing facility downtime.

1 is a longitudinal sectional view showing a power transmission blocking device of a rotating body according to the prior art,

Figure 2 is an exploded perspective view showing a power transmission blocking device of the rotating body according to the present invention,

Figure 3 is a mounting state showing a power transmission blocking device of the rotating body according to the present invention,

Figure 4 is a rated load operating state in the power transmission block of the rotating body according to the present invention,

5 is an operating state when the overload occurs in the power transmission block of the rotating body according to the present invention,

6 is a side view of a rotating body employing a power transmission blocking device according to the present invention.

Explanation of symbols on the main parts of the drawings

10 ... follower 12 ..... Base cover

13 ..... Set Screw 15 ..... Lock Nut

16 ..... Ball Base 20 ..... Drive Section

21 ..... Steel ball 22 ..... Ball pocket

23 ..... adjusting screw 24 ..... disc spring

25 ..... Slider 26 ..... Shaft member

26a .... Threshold 26b .... slope

27 ..... Guide Ball 28 ..... Guider

29 ..... Casing 29a .... Round ball

The present invention as a technical configuration for achieving the above object,

In a rotating body for transmitting rotational power by having a drive coupling connected to the drive motor and a driven coupling connected to the driven shaft,

One side of the driven coupling has a base cover inserted into and formed through a plurality of mounting holes as a fixing bolt, and is provided with a set screw assembled into a screw hole of the base cover and fixed as a lock nut, and into the mounting hole. A driven part fitted with one end and a front end of the set screw and mounted with a ball base having a locking groove formed at a rear end thereof;

It is mounted in a plurality of mounting holes formed through the one side of the drive coupling, the ball contact with the rear end of the ball base is provided with a ball pocket is disposed in the inner hole, the fixed ball to the casing formed through the circular hole coinciding with the inner hole It is mounted on one side of the drive coupling, the circular hole is mounted to the shaft member of a predetermined length in contact with the steel ball and the tip, and between the slider and the guider disposed on the rounded projection formed on the rear end outer peripheral surface of the shaft member It is equipped with two guide balls, and between the adjustment screw and the round jaw fastened to the circular collinear end by providing a power transmission blocking device of the rotating body characterized in that it comprises a drive unit equipped with a disk spring.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view showing a power transmission blocking device of the rotating body according to the present invention, Figure 3 is a state diagram showing the power transmission blocking device of the rotating body according to the present invention, Figure 4 is a circuit according to the present invention Rated load operation state diagram in the entire power transmission blocker, Figure 5 is an operating state diagram when the overload occurs in the power transmission blocker of the rotating body according to the present invention, Figure 6 is a circuit employing the power transmission blocker according to the present invention. A side view of the whole.

Power transmission interrupting device 1 of the rotating body according to the present invention, as shown in Figures 2 to 6, driven coupling 110 and driven shaft 122 connected to the drive shaft of the drive motor (not shown) This device is to stop the power transmission quickly and safely by disconnecting and disconnecting the coupling 120 between the driving, driven coupling 110 and 120 when an overload occurs greater than the rated load during operation. (1) consists of a driven part 10 and a drive part 20.

That is, the driven part 10 provided in the driven coupling 120 has a plurality of mounting holes 10a formed on one side of the driven coupling 120 as shown in FIGS. 2 and 3. By fastening a plurality of fixing bolts 14 to the base cover 12 into which the cylindrical body 12a is inserted into each of the mounting holes 10a, it is firmly mounted on one side of the driven coupling 120. The set screw 13 fixed as the lock nut 15 is fastened to the screw hole 12b of the bare cover 12, and a cylindrical ball base 16 in contact with the rear end and the front end of the set screw 13 is connected. ) Is inserted into the mounting hole (10a) into a loose fit and movable by the operation of the set screw 13, the rear end in contact with the steel ball 21 to be described later is provided with a locking groove (16a) formed a predetermined length recessed Configure.

In addition, as shown in FIGS. 2 and 3, the driving unit 20 provided in the driving coupling 110 may be mounted on a plurality of side surfaces of the driving coupling 110 like the driven coupling 120. Through the ball (20a), each of the mounting hole (20a) is a ball pocket that is inserted into the inner hole (22a) is a steel ball 21 is caught in contact with the engaging groove (16a) that is the rear end of the ball base (16) 22 is mounted, and immediately after the ball pocket 22, one side of the drive coupling 110, a casing in which a circular hole 29a disposed in the same line as the inner hole 22a is formed through the body. (29) is mounted as a plurality of fixing bolts (29b).

In addition, the circular hole 29a of the casing 29 is inserted through the inner hole 22a of the ball pocket 22 to be in contact with the steel ball 21 and the casing (29) through the circular hole 29a. 29) having a predetermined length of the shaft member 26 is exposed to the rear, the shaft member 26 is made of a rod-shaped protruding projection (26a) having an outer diameter size larger than the outer diameter of the cylindrical body on the rear end outer circumference; In addition, the round jaw 26a is provided with an inclined surface 26b inclined at a predetermined inclination angle to the rear.

The slider 25 having the inclined inner circumferential surface 25a is mounted on the round bar 26a and assembled to the rear end of the shaft member 26 and disposed in the circular hole 29a and the slider 28. Between the 25 is provided with a plurality of guide balls 27 to be raised or lowered along the inclined surface (26b) of the round jaw (26a). In addition, when the slider 25 and the guider 28 assembled with the shaft member 26 penetrate through the center thereof are loosely fitted so that they can move when an overload occurs, the diameter of the guide ball 27 is equal to that of the casing. The inner diameter of the circular hole 29a of (29) is smaller than or equal to the size of the outer diameter of the shaft member 26, and is densely mounted to the inclined surface 26b of the annulus 26a in an annular shape.

In addition, a female thread is formed at the tip of the circular hole 29a of the casing 29 so that the adjusting screw 23 is fastened, between the fixed screw 23 and the rounding 26a of the shaft member 26. Equipped with a disk spring (24) for generating an elastic force to return to its original state during compression, the shaft member 26 having a predetermined length is the slider 25, guide ball in the inner water of the circular hole (29a) of the casing 29 The shaft member 26 inserted into the inner hole 22a of the ball pocket 22 through the adjusting screw 23 and the disk spring 24 is inserted continuously and the guider 28 is a ball. Inserted into the inner hole (22a) of the pocket 22 is assembled in a configuration in which the steel ball 21 and the front end is seated in the locking groove (16a) of the ball base (16).

In addition, as shown in FIG. 3, the bearing 109 is assembled to the boundary outer circumferential surface as a stop ring 18 so that the driving coupling 110 and the driven coupling 120 can be rotated separately, and the shaft member ( It is preferable to lubricate the oil so that the forward and backward movements of 26) and other components can be easily performed so that the operation for interrupting power transmission can be easily performed when an overload occurs.

Referring to the operation and effect of the power transmission blocking device of the rotating body having the configuration as described above are as follows.

That is, the power transmission blocking device 1 of the present invention, as shown in Figs. 4, 5 and 6, the drive in contact with each other so as to be in contact with each other to transfer the rotational force of the drive motor (not shown) to the driven shaft 122 On one side of the driven coupling (110), 120 is provided with a plurality of rotation angles around the center of the rotational axis, in the embodiment of the present invention, it is preferable that the three installed at intervals of 120 ° as shown. .

That is, as shown in Figure 4, during normal power transfer of the drive, driven coupling 110, 120, steel balls 21 disposed on the interface between the drive, driven coupling 110, 120 The slider 25 and the guider which are mounted between the engaging groove 16a of the ball pocket 16 and the tip of the shaft member 26 and are assembled on the outer periphery of the round member 26a of the shaft member 26. A plurality of guide balls 27 disposed between 28 are positioned on the inclined surface 26b of the round jaw 26a, and the disk spring 24 has a constant elastic force between the round bar 26a and the adjusting screw 23. As it is mounted in a compressed state so as to generate a pressure, it loosely fits into the round bar 26a of the shaft member 26 unlike the adjusting screw 23 which is screwed into and fixed in the circular hole 29a of the casing 29. The custom assembled and movable slider 25 is pushed back by the elastic force of the compressed disk spring 24.

In this case, since the plurality of guide balls 27 arranged on the inclined surface 26b of the round bar 26a are pushed backwards on the inclined surface 26b, the inside of the inner hole 22a of the ball pocket 22 is provided. As the movable shaft member 26 is assembled by a loose fit and slides forward, the steel balls 21 in contact with the tip thereof can be brought into close contact with the locking groove 16a of the ball base 16 to increase the locking force. It is.

That is, the guide ball 27 is inclined surface 26b by using the disk spring 24 which is properly compressed between the adjusting screw 23 and the round bar 26a by the adjusting screw 23 to exert a predetermined elastic force to the rear. By moving to the rear by riding), the steel ball 21 in contact with the front end of the shaft member 26 is moved to the driven coupling 120 to the locking groove (16a) side of the ball base (16) Since it is possible to increase the binding force between the drive coupling 110 and the driven coupling 120 by further close to the difficulty, it transmits the rotational force of the drive motor smoothly to the driven coupling 120 side to continue normal operation You can do it.

On the other hand, when an overload factor is generated in the rotating body, the power cut off between the driving and driven coupling 110 and 120 is, as shown in FIG. 5, the generated overload is applied to the adjusting screw 23. When the driving unit 20 mounted on the drive coupling 110 and the driven unit 20 mounted on the driven coupling 120 are shifted from each other by a force greater than the elastic force of the compressed disk spring 24, The steel ball 21 which is in contact with the locking groove 16a of the ball base 16 is separated from the steel ball 21 and is in contact with the outer surface of the driven coupling 120, and the ball pocket is mounted to the driving coupling 110. While fully inserted into the inner hole 22a of the 22, the shaft member 26 in contact with the tip thereof is pushed backward.

In this way, when the shaft member 26 assembled to move forward and backward in the inner hole 22a of the ball pocket 22 and the circular hole 29a of the casing 29 is pushed backward, a round chin formed on the rear end outer peripheral surface The guide ball 27 positioned on the inclined surface 26b of the 26a and disposed between the slider 25 and the guider 28 ascends forward on the inclined surface 26b, and at the same time, the slider 25 As the slider 25 is brought into contact with the inclined inner circumferential surface 25a, the slider 25 is moved forward within the circular hole 29a, and the disk between the adjusting screw 23 and the disk is moved by the forward movement of the slider 25. The spring 24 is compressed even more.

That is, when the guide ball 27 is placed on the outer circumferential surface instead of the inclined surface 26b of the round bar 26a, the shaft member 26 is free to receive external force in any direction before and after, and the steel ball 21 is also inserted into the inner hole (22a) of the ball pocket 22 in a free state without being subjected to external force, so that the locking force with the ball base 16 is released, the drive coupling 110 and the driven coupling The power transmission structure between 120 can be safely and quickly cut off when the overload occurs to block the rotational force of the driving motor to protect the equipment.

After the overload factor of the installation is removed, the ball base 16 of the driven coupling 120 and the ball base 16 fitted into the ball pocket 22 of the driving coupling 110 are arranged on the same line. After the drive, driven coupling 110, 120 is properly rotated, the shaft member 26 pushed backward is struck with a hand tool or the like so that the steel ball is seated in the locking groove 16a of the ball base 16. It is easy to perform the return operation to move forward and re-enable power transmission.

According to the present invention as described above, when the overload occurs larger than the set elastic force of the disk spring 24, the steel ball 21 is released from the locking groove 16a of the ball base 16 to drive drive 110 and driven coupling Since the binding force of 120 can be safely and easily released, the rotational power is cut off without fear of physical damage and damage to the equipment of the share pin 130 as in the prior art, and the blocking state is maintained until the overload cause is removed. Since the equipment is safely protected and prevents large equipment failure, the steel balls 21 and the ball base 16 are quickly caught by the return of the shaft member 26 that is pushed back after removing the cause of the overload. The productivity of work can be improved by reducing the down time of the equipment compared with the conventional one, and the effect of dealing with the increase and decrease of overload can be obtained quickly.

Claims (1)

In the rotating body which is provided with a drive coupling 110 connected to the drive motor, and a driven coupling 120 connected to the driven shaft 122, to transmit the rotational power, One side of the driven coupling 120 is provided with a base cover 12 inserted into it by a plurality of mounting holes (10a) to be inserted therein as a fixing bolt 14, the screw hole (12b) of the base cover 12 ) And a set screw 13 fixed to the lock nut 15 and fitted into the mounting hole 10a to contact one end and the front end of the set screw 13, and a locking groove 16a is formed at the rear end thereof. The driven part 10 to which the ball base 16 is mounted, The ball pocket is mounted into a plurality of mounting holes (20a) formed through one side of the drive coupling 110, the steel ball 21 in contact with the rear end of the ball base 16 is disposed in the inner hole (22a) And a casing 29 through which a circular hole 29a coinciding with the inner hole 22a is mounted on one side of the drive coupling 110 as a fixing bolt 29b. The slider 25 and the guider are mounted to the 29a, and the shaft member 26 having a predetermined length in contact with the steel ball 21 and the tip thereof is disposed, and is disposed on the round projection 26a protruding from the rear end outer circumferential surface of the shaft member 26. A plurality of guide balls (27) between the (28), and between the adjustment screw 23 and the round projection (26a) fastening to the tip of the circular hole (29a) a drive unit 20 mounted with a disk spring (24) Power transmission blocking device of the rotating body comprising a.