KR101119557B1 - Overload prevent device for the floodgate shutters - Google Patents

Abstract

PURPOSE: A device for preventing overload of a water-gate opening/closing device with a foreign-material removing function is provided to enhance durability of a device against overload and automatically remove foreign material simultaneously with recognizing overload. CONSTITUTION: A device for preventing overload of a water-gate opening/closing device with a foreign-material removing function comprises a water-gate opening/closing device(1), an upper limit switch(51), a lower limit switch(52), a control unit(50), a timer switch(53), a first timer(54), a second timer(56) and a third timer(58). The upper limit switch is connected to the water-gate opening/closing device and senses the complete opening of the water gate. The lower limit switch senses the complete closing of the water gate. The control unit receives the position signal of the water gate output from the upper and lower limit switches and controls the operation of the water-gate opening/closing device.

Description

Overload prevent device for the floodgate shutters with active debris removal

The present invention relates to a hydrological overload prevention device having a foreign material removal function, and in particular, when an overload is generated by a foreign material such as earth and sand applied to the hydrologic gate when the descending gate descends, the device is protected from overload by using an auxiliary overload prevention device installed in the power transmission system. In addition, the overload protection device of the hydro gate switch which can actively eliminate the cause of the overload by automatically performing the descending swinging movement of the gate for a predetermined time through a plurality of timers when the overload generation continues for a certain time. It is about.

1 to 3 are views disclosed in Korean Utility Model Model Publication No. 0272093 invented by the applicant of the present invention.

The well-known lifting and lowering type gate switch 1 is connected to the electric motor 2, the electric reducer 3 for accelerating and decelerating the rotational force of the electric motor 2 at a constant ratio, and the electric reducer 3 to reconnect the rotational force. By including a main reducer (4) for accelerating and decelerating at a predetermined ratio, and a rack bar (5) which is geared up and down with the main reducer (4), the water gate integrally coupled to the lower end of the rack bar (5) A method of raising or lowering the channel and opening or closing the waterway is commonly used.

In addition, in the case of the electric hydro switch (1), especially when the water gate descends to foreign substances such as earth and sand existing in the waterway when the water gate is lowered and can not be lowered any more, it is transmitted to the electric reducer (3) mechanically connected to the water gate By blocking the reaction force, to configure the overload protection device 10 in the power transmission system to prevent the durability of the mechanical parts due to the overload is reduced.

That is, as shown, the overload protection device 10 is installed in the power transmission system of the universal hydro gate switch, the input shaft 31 of the electric reducer 3 is connected by the main reducer 4 and the chain 34. The sprocket 32 installed on the input shaft 31 of the electric reducer 3 and the sprocket 42 provided on the output shaft 41 of the main reducer 4 are connected in detail by a chain 34. In the sluice gate 1, one inner ring 12 is fixed to the input shaft 31, the other outer ring 13 is fixed to the sprocket 32, and the inner ring 12 and the outer ring 13 A plurality of roller bearings 14 and roller cams 15 are alternately arranged between the inner ring 12 and the outer ring 13 so as to be connected to each other to include a one-way clutch 11. The brake pad 21 is coupled to the other end of the one-way clutch 11, that is, the other end of the input shaft 31 penetrating the sprocket 32, and is in close contact with the side surface of the sprocket 32. A pressing plate 23 for holding and supporting 21, a tapered dish spring 24 provided on the side of the pressing plate 33 to elastically support the pressing plate 23 toward the sprocket 32, and The lock pad 25 is fitted to the end of the input shaft 31 through the brake pad 21, the pressure plate 23, and the disc spring 24 to support the disc spring 24. .

The overload protection device 10, the sprocket 42 of the main reducer 4 connected to the sprocket 32 of the electric reducer 3 and the chain 34 by using the one-way clutch 11 is connected to the power when the water gate rises. Rotating) increases and decreases the water gate by interlocking with the rack bar (5), which increases and decreases by a certain ratio through the main decelerator (4), and on the contrary, when the water gate descends, the water gate is opened by the frictional force of the brake pad (21). It can be lowered slowly, and if an overload occurs due to foreign matter such as earth and sand during the descending of the floodgate, the floodgate will not lower anymore and the input shaft 31 will maintain idle regardless of the stopped sprocket 32. Make it more durable.

However, the descending speed of the water gate in the gate switch 1 depends on the friction of the brake pad 21 of the overload protection device 10, if the friction surface of the brake pad 21 after a long operation process If worn down, there is a problem that it is difficult to crack down on the sluice gate.

In addition, the dish spring 24 is provided with a separate fixing means to maintain the elastically interposed state between the pressing plate 23 and the lock nut 25, close contact with the sprocket 32 When a strong frictional force acts on the friction surface of the brake pad 21, a slip phenomenon occurs in the close contact portion supported by the pressing plate 23 and the lock nut 25, which are marked as 'A' and 'B' in FIG. This will occur.

The slip phenomenon generated in the support portion of the dish spring 24 generates uneven wear along the circumference of the dish spring 24, and the uneven wear of the dish spring 24 thus formed causes uneven elastic force along the circumference. There is a problem that generates a non-uniform wear phenomenon of the brake pad (21).

In addition, as described above, the hydrologic switch 1 during the operation of the overload protection device 10 is still in an overload state that overcomes the friction force of the brake pad 21 until the administrator manually cuts off the power of the hydrogate switch 1. Since the rotation does not stop, there is a problem that a malfunction may occur due to the excessive operation of the water gate switch (1).

Withdrawal number '16' is the bolt that fixes the sprocket and outer ring, and '22' is the O-ring.

On the other hand, the applicant of the present invention has proposed an overload protection device of the water gate switch using a timer in order to improve the above problems of the conventional overload protection device.

That is, Figure 4 is a view disclosed in the Korean Utility Model Utility Publication No. 0272093 invented by the applicant of the present invention.

First, as shown in FIGS. 2 and 3, the overload protection device of a hydrogate switch using a timer disclosed in Korean Utility Model No. 0272093 includes a secondary overload protection device primarily as a power transmission system of the hydrogate switch. Configure.

Here, referring to Figure 4, the gate switch (1: Fig. 1) for raising and lowering the gate while rotating forward and reverse, the upper limit sensor 401 for detecting the full opening (maximum ascent point) of the gate, The lower limit sensor 402 detects a complete closing (maximum falling point), and receives the position signal of the water gate from the upper limit sensor 401 and the lower limit sensor 402 according to the operation of the up and down buttons. By including the control part 40 which controls an electric power to the gate switch (electric motor 2) so that an up-down movement may be interrupted; The control unit 40 includes: a lift detection circuit 43 for detecting an operation of the switch for raising and lowering the lock when the lock is lowered; A timer circuit (44) for measuring time from the time when the rising / lowering signal of the rising / lowing detection circuit (43) is applied until the position signal of the upper limit sensor (401) or the lower limit sensor (402) is applied; Comparison circuit 45 for comparing the measured time measured by the timer circuit 44 and a reference time input in advance, and an emergency stop circuit for shutting off the power of the switch to raise and lower the gate when the measurement time is longer than the reference time (46); including.

Eventually, the overload protection device of the existing hydro gate switch, as well as the upper and lower limit sensors (401, 402) for detecting the full opening and closing of the gate, as well as the upper limit for the full opening from the time when the rising and falling signal of the gate It comprises a timer (circuit) which measures the time difference until the position signal of the sensor 401 or the fully closed lower limit sensor 402 is applied.

This allows, for example, to measure the actual rise time of the water gate until it is fully open and to operate when the water gate starts to ascend, or to operate when the water gate starts to descend, so that the actual water gate is fully closed. If the measured time is longer than the preset reference time, it is possible to immediately cut off the power applied to the electric motor of the gate switch to improve the durability of the device.

However, the conventional overload protection device shown in Figure 4, if it is possible to recognize the occurrence of overload and at the same time to turn off the power of the gate switch immediately to improve the durability of the device, the administrator manually manually causes the cause of the overload later If it is not removed, the function of the hydrology will be completely stopped for a long time, and the hydrological functions such as drainage and fresh water will be impossible.

(Document 1) Domestic Utility Model Registration No. 20-0301133 (2003.01.03) (Document 2) Domestic Utility Model Registration No. 20-0272093 (2002.04.02)

Therefore, the problem to be solved by the present invention is to increase the durability of the device from the overload that occurs for a longer time than the pre-set opening and closing time in the hydrological switchgear during the descending operation of the gate, and to recognize the generated overload and at the same time the cause of the overload It is to provide an overload protection device for a gate switchgear having an active removal function of a foreign substance which can automatically remove a foreign substance causing an overload, by automatically implementing a special driving of the gate for removing.

Another object of the present invention is to solve the problem of the hydro-switch which can actively remove the foreign matter causing the overload only under the optimal conditions to prevent the malfunction or damage of the device due to excessive operation of the hydro-switch in the overload condition. It is to provide an overload protection device.

Another problem to be solved by the present invention, by using the auxiliary overload protection device installed in the power transmission system of the hydro switch in the process of recognizing the overload, the hydro gate to prevent excessive wear of the brake pads to increase the durability of the parts It is to provide an overload protection device of the switchgear.

Another problem to be solved by the present invention is to overcome the problems of the existing hydrology that was not secured in the fully closed state of the hydrology from the small amount of foreign matter interposed between the water gate and the bottom to secure the confidentiality of the hydrology in the fully closed state It is to provide an overload protection device of a hydro gate switch which can be improved.

The present invention for achieving the above object is to rotate in the forward and reverse direction, the water gate switch for raising or lowering the gate, the upper limit switch for detecting the full opening of the gate, the lower limit switch for detecting the complete closure of the gate and The controller is configured to control the operation of the gate switch by receiving a position signal of the gate gate output from the upper limit switch and the lower limit switch,

A timer operation switch for sensing a position in which the descending gate is partially opened from the floor to a predetermined height and applying an output signal to the controller;

A first timer for setting a falling operation time of the water gate until the controller, which has received the output signal of the timer operation switch, receives the output signal of the lower limit switch;

A first time relay configured to block the operation of the hydro switch for a predetermined time when the output signal of the lower limit switch is not applied even though the set time of the first timer is exceeded;

A second timer in which a rising operation time is set such that the control unit raises and operates the hydro-switch after the predetermined time has elapsed by the first time relay;

A second time relay configured to block the operation of the hydro switch for a predetermined time after the set time of the second timer has elapsed;

After the predetermined time has elapsed by the second time relay, the controller comprises a third timer for setting the falling operation time until the output signal of the lower limit switch is applied.

On the other hand, the control unit, if the output signal of the lower limit limit switch is not applied, despite the exceeding the set time of the third timer during the falling operation of the hydro-switch during the operation time set in the third timer, the first time relay The second timer, the second time relay, and the third timer may be repeatedly performed in sequence.

In addition, the control unit, if the output signal of the lower limit switch is not applied, despite the exceeding the set time of the third timer during the falling operation of the hydro-switch during the operation time set in the third timer, the electric motor of the hydro-switch It may be to cut off the power applied to.

On the other hand, the sluice gate switch, it may be configured to include an auxiliary overload prevention device in the power transmission system for connecting the electric motor and the main reducer.

The present invention can ensure the accurate operation of the complete closing of the water gate by preventing the overload occurring during a longer time than the predetermined opening and closing time of the water gate switch during the ascending and descending operation of the water gate, deterioration of durability of the water gate switch due to overload It is possible to prevent, and most of all, it is possible to actively remove foreign substances causing the overload from the moving area of the gate within the range that does not impair the durability of the gate switchgear can be expected to improve the functional quality of the gate equipment.

1 is an example of a water gate switch applied with a conventional auxiliary overload protection device
2 is an enlarged view of the auxiliary overload preventing device of FIG.
3 is a schematic view for showing the configuration of the one-way clutch
Figure 4 is another example of a conventional water gate switch applied with another overload protection device
5 is a view for showing the configuration of the auxiliary overload protection device according to the present invention;
Figure 6 is a view showing a separate portion of the auxiliary overload protection device according to the present invention
Figure 7 is a block diagram showing the configuration of the overload protection device having a foreign material active removal function according to the present invention
8 is a view for showing a sequential timer setting time according to the operation of the overload protection device having a foreign matter active removal function according to the present invention
9 is a view for showing the operation time of the timer operation switch according to the present invention;
10 is a view showing an installation example of an upper limit switch, a lower limit switch and a timer operation switch according to the present invention;

The features and advantages of the present invention described above or not described above will be more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

The present invention first detects an overload applied to the power transmission system of the water gate switch 1 transmitted through the water gate during the operation of the water gate switch 1 using a plurality of timers, and through a predetermined drive of the water gate using the plurality of timers. In this regard, the cause of the overload on the power train of the hydro gate switch 1 can be actively eliminated.

First, the sluice gate switch 1 applied to the present invention, the well-known sluice gate switch 1 shown in Figure 1 is applied, the electric motor 2 and the main decelerator 4 of the sluice gate switch 1 An auxiliary overload prevention device is applied to the power transmission system to connect the brake pad 21 to prevent a primary overload by slipping (sliding) the brake pad 21.

5 and 6, the auxiliary overload preventing device 100 according to the present invention includes an input shaft 31 of the electric reducer 3, an output shaft 41 of the main reducer 4, and a chain 34. It is configured to include a sprocket 32 connected to the) and a one-way clutch 11 for connecting the input shaft 31 and the sprocket 32. As shown in FIG. 3, the one-way clutch 11 may include an inner ring 12 coupled to the input shaft 31, an outer ring 13 fixed to one side of the sprocket 32, and the inner ring 12. And a plurality of roller bearings 14 and roller cams 15 alternately installed between the 12 and the outer ring 13, the other end of the input shaft 31 passing through the sprocket 32. A shaft plate coupled to one side of the sprocket 32 to the side of the sprocket 32 is provided with a pressing plate 23 is provided with a belt-shaped brake pad 21, and is fitted to the input shaft 31 to support the other side of the pressing plate 23; The plate spring 24 and the lock nut 25 is axially coupled to the end of the input shaft 31 to securely support the plate spring 24.

Here, unlike the conventional auxiliary overload protection device according to FIGS. 1 to 3, the auxiliary overload protection device 100 according to the present invention is screwed to a screw hole 251 formed in the lock nut 25 to lock the nut 25. A major feature is that the tip that penetrates the slip spring includes an anti-slip adjustment tool 26 for pressing one surface of the dish spring 24.

Preferably, the slip preventing adjustment device 26 is directed toward the plate spring 24 and maintains an equal distance from each other, preferably composed of two or more. 6 is provided with two anti-slip adjustment mechanism 26 forming a symmetrical structure, on the other hand, a plurality of anti-slip adjustment mechanism 26 can be maintained in a circular arrangement while maintaining an equal distance from each other. .

The drawing number '261' shown in FIG. 4 is a 'tool insertion groove' for screwing the slip preventing adjustment tool 26 to the screw hole 251 of the lock nut 25.

Looking at the operation of the overload protection device of the hydro circuit breaker by such a configuration,

When first attempting to open (rising) the closed gate, the manager rotates the input shaft 31 with the rotational force accelerated and decelerated at a constant ratio through the electric reducer 3 and moves the electric motor 2 upward. ) And the inner ring 12 coupled to the shaft rotates in conjunction. By rotating the outer ring 13 by the forward rotation of the roller bearing 14 and the roller cam 15 interlocking with the inner ring 12 to rotate the sprocket 32 fixed to the outer ring 13 in the forward direction do. As a result, the rotational force of the sprocket 32 rotates the output shaft 41 of the main reducer 4 connected to the chain 34, and the rotational force accelerated and decelerated at a constant ratio through the main reducer 4 raises the rack bar 5. The gate is opened.

On the other hand, when trying to close (fall) the open gate, the manager rotates the input shaft 31 with the rotational force accelerated and decelerated at a constant ratio through the electric motor (2) is operated by the electric reducer (3), the input shaft ( 31) and the inner ring 12 is coupled to the shaft to rotate. Due to the reverse rotation of the roller bearing 14 and the roller cam 15 interlocking with the inner ring 12, the outer ring 13 loses its bearing force and eventually interlocks with the sprocket 32 which rotates in the reverse direction due to the weight of the sluice. To rotate.

Here, according to the present invention, the sprocket 32 which rotates in the reverse direction maintains a state in which the rotational force is constrained by the action of frictional force on the belt-shaped brake pad 21 having one side coupled to the pressure plate 23. Will be slowly lowered.

At this time, the tip of the anti-slip adjustment tool 26 screwed to the screw hole 251 formed in the lock nut 25 maintains a state of pressing the one surface of the plate spring 24, thereby removing the plate from the lock nut 25 By blocking the slip phenomenon of the spring 24 and stably maintaining the initial installation position of the elastic spring plate 24 is able to concentrate the friction force on the brake pad 21 of the pressure plate (23).

As described above, the auxiliary overloading device 100 according to the present invention constitutes an anti-slip adjustment device 26, and the momentary reaction force is generated from foreign matter such as earth and sand in the moving path (between the bottom and the bottom of the gate) of the floodgate in descending operation. Rather than improving the responsiveness of the conversion process to the idle rotation state with respect to the input shaft 31 of (3), when the overload (reaction) occurs, the pressing plate 23 supported by the slip preventing adjustment device 26 is generated. It is possible to increase the friction between the brake pad 21 and the sprocket 32 by increasing the rotational torque. For this reason, if a small reaction force foreign material is present, the reaction force can be canceled to realize the function of closing the water gate more. For example, there is a small gap between the gate and the door frame or the gate and the bottom surface completely closed from a small amount of soil close to the complete closure of the water gate, while the present invention is supported by the slip prevention adjustment 26 Since the friction force between the pressurized plate 23 and the sprocket 32 can be largely formed, the brake pads of the pressurized plate 23 may be applied even if reaction force is applied from a small amount of foreign matter deposited on the floor immediately before the closing of the gate. 21, the sprocket 32 is able to implement the action of overcoming the reaction force of the foreign matter and sealing the water gate a little more by generating a stronger friction force than the existing than the rapid slip action. As a result, it is possible to improve the confidentiality compared to the existing state in the completely closed hydrological state.

In addition, if the brake pad 21 used for a long time is worn through the anti-slip adjustment device 26 according to the present invention, it is difficult to effectively control the descending speed of the floodgate. By tightening the slip preventing adjustment tool 26 by tightening the tool insertion groove 261 of the 26, the elastic force of the plate spring 24 is increased to increase the elastic support force of the pressing plate 23 toward the sprocket 32. The friction force of the brake pad 21 in close contact with the sprocket 32 can be increased. At this time, in the case of screwing the slip preventing adjustment tool 26 provided in plural in the circumferential direction of the lock nut 25, the slip preventing adjustment tool 26 and the pressure plate 23 are equally tightened. Equal support for both sides of the plate spring (24) supported in the) to be secured.

In addition, through the plurality of slip preventing adjustment device 26 according to the present invention, if the wear state of the belt-shaped brake pad 21 forms uneven partial wear along the circumference, the plurality of slip preventing adjustment devices arranged in a circular shape There is also an advantage in that it is possible to partially tighten or loosen (26) and reset the exact alignment of the friction surface of the brake pad 21 in close contact with the sprocket 32 as a whole.

In addition, through the slip prevention adjustment 26 according to the present invention, the administrator can easily check the tightening degree of the slip prevention adjustment 26 screwed to the lock nut 25 from the outside of the overload protection device 100. There is also an advantage that can easily predict the expected replacement cycle by estimating the use cycle of the current brake pad (21).

On the other hand, in the continuous descending process of the hydrologic gate, if the reaction force by foreign matter such as soil and sand overcomes the frictional resistance of the brake pad 21 in close contact with the sprocket 32, the hydrological gate stops descending completely and interlocks with the sprocket 32 Even if the rotation of) stops, the input shaft 31 of the electric reducer 3 rotated by the one-way clutch 11 maintains the idle state regardless of the reaction force transmitted from the water gate and protects the device. .

On the other hand, Figure 7 is an exemplary block diagram showing an overload protection device of the water gate switch using a plurality of timers according to the present invention, Figure 8 is an exemplary view showing the operation of comparing the sequential setting time of the plurality of timers according to the present invention.

Referring to Figures 7 and 8, the present invention is the above-mentioned known lifting type gate switch 1, the upper limit switch 51 for detecting the full opening of the gate connected to the gate switch 1, and the water gate The lower limit switch 52 for detecting complete closure, and the position signal of the sluice output from the upper limit switch 51 and the lower limit switch 52 are applied to interrupt (block) the operation of the sluice switch 1. The controller 50 is configured, but according to a main feature of the present invention, the controller includes a timer operation switch 53, a first timer 54, a second timer 56, and a third timer 58. do.

The upper limit switch 51, by operating the electric motor (2) of the gate switch 1 detects the fully open state of the gate when the water gate ascending operation to provide the output signal to the controller 50, such The controller 50 receiving the output signal recognizes the complete opening of the gate and blocks (stops) the rotation of the electric motor 2 of the gate switch 1.

The lower limit switch 52, by operating the electric motor (2) of the sluice gate switch 1 detects the fully closed state of the sluice in the lowering operation of the sluice to provide the output signal to the control unit 50, such The controller 50 receiving the output signal recognizes the complete closure of the floodgate and blocks the rotation of the electric motor 2 of the floodgate switch 1.

As shown in FIG. 10, the upper limit switch 51 and the lower limit switch 52 are connected to the gate switch 1 so that the movement axis 63 of the indicator 6 is axially coupled to the other end of the rotary shaft ( 61) may be a switch configured to contact. Reference numeral '62' in FIG. 10 is a 'cam' in which the upper limit switch 51 and the lower limit switch 52 are in contact with each other.

Subsequently, the timer operation switch 53 corresponds to a means for outputting an operation signal of the overload protection device for actively removing foreign matters according to the present invention. That is, the position of the hydrological gate which is in the ascending or descending operation is partially sensed by the predetermined height from the floor, and the position signal of the partially opened hydrological gate is applied to the controller 50.

In general, the cause of the overload of the gate switch 1 during ascending or descending operation is that a reaction force is generated in the descending movement path of the descending gate, that is, from the foreign bodies such as earth and sand existing between the bottom of the channel and the bottom of the gate. Therefore, the timer operation switch 53 according to the present invention may be set so as to detect a position where the water gate is partially opened from the bottom to a predetermined height only during the lowering operation of the water gate switch 1.

Preferably, referring to FIG. 9, the time of operation of the timer operating switch 53, that is, the partially open position of the water gate, is 1 / from the floor with respect to the opening height H of the fully open water gate operated with the highest ascent operation. It is preferable to apply the output signal toward the controller 50 at a position partially open by 3 * H to 1/2 * H. In a channel environment in which a large amount of foreign matter is contained in the channel, the first gate 54 to be described later is driven when the lower gate of the gate passes through the half-open (1/2 * H) position with respect to the full opening (H). In a waterway environment where a relatively small amount of foreign matter is contained in the waterway, the first timer 54 to be described later when the water gate in descending operation passes 1/3 * H position from the bottom to the full opening (H) ) Will be set to drive.

As shown in FIG. 10, the timer operation switch 53 is connected to the water gate switch 1 in the same manner as the upper limit limit switch 51 and the lower limit limit switch 52 described above, and moves to the other end 63. ) May be a switch configured to contact the rotating shaft 61 of the indicator 6 to which the shaft is coupled. As a result, the setting of the time when the timer operation switch 53 is operated in accordance with the partial opening position of the water gate can be set by adjusting the rotation angle of the cam 62 to which the timer operation switch 53 is in contact.

Subsequently, the first timer 54 starts counting for a predetermined time while the controller 50 receives the output signal of the timer operation switch 53. That is, the time until the complete closing of the water gate during the descending operation of the water gate switch 1, that is, the time until the output signal of the lower limit switch 52 is applied is set in advance, and the count completion signal according to the completion of the set time is completed. Is applied to the controller 50.

In the first timer 54, a predetermined time until the control unit 50 receives the output signal of the lower limit switch 52 is set in advance during the lowering operation of the water gate switch 1, so that the first timer ( Although the control unit 50 receives the output signal by 54), when the output signal of the lower limit switch 52 is not applied, the controller 50 recognizes an overload state in which a reaction force is generated from the foreign body.

In this regard, the time set by the first timer 54 in consideration of the mechanical driving error of the sluice gate switch 1 is the time until the control unit 50 receives the output signal of the lower limit switch 52. By keeping it longer, it is possible to increase the accuracy of the overload generated in the water gate switch (1). Here, when the overload condition is correctly recognized, the damage of the water gate switch 1 in a long overload state (in particular, the brake pad 21 of the auxiliary overload protection device 100 provided in the power transmission system of the water gate switch 1 is worn out). In order to prevent), a time elapsed (for example, 1 to 2 minutes) is set slightly longer than the time until the output signal of the lower limit switch 52 is applied. Of course, the time set through the first timer 54 may be input using a separate input device, and may be changed to an optimal setting time from time to time according to the equipment state of the gate switch.

For example, suppose that the timer operation switch 53 is operated at a position where the water gate is partially open from the bottom by 1/3 * H, and the water gate which continues to operate downward is completely closed, that is, the lower limit switch 52. Assuming that the time from which the output signal is applied is exactly 1 minute, the count completion time set by the first timer 54 may be set to 2 to 3 minutes, which is 1 to 2 minutes longer than the 1 minute. As a result, when the output signal of the lower limit limit switch 52 is not applied even though 2 to 3 minutes have elapsed since the counting of the first timer 54 starts, the controller 50 may further have a flood gate by foreign matter such as earth and sand. It is recognized that an overload condition does not fall abnormally.

Subsequently, when the controller 50 recognizes the overload state using the first timer 54 as described above, the controller 50 causes the electric motor 2 of the water gate switch 1 to operate. The predetermined time is set to pause the forward (falling) rotation of. As a result, the controller 50 stops the forward (falling) rotation of the electric motor 2 for the time set in the first time relay 55 (about 2 to 3 seconds), and then ends counting of the first time relay 55. The electric motor 2 is reversely operated (increased) together with the counting operation of the second timer 56 which operates simultaneously.

Subsequently, after the predetermined time has elapsed by the first time relay 55, the second timer 56 is a reverse direction for the control unit 50 to operate the water gate switch 1 again in the previous reverse direction (rising). The operation time is set in advance, and provides the counting completion signal to the controller 50 as the set time is completed.

In other words, the second timer 56 raises the descending floodgate in the reverse direction for a predetermined time, thereby separating the floodgate from the reaction force of foreign matter present in the movement path of the floodgate. Thus, since the second timer 56 separates the gate from the foreign body acting as a reaction force in the direction of movement of the predetermined distance, the foreign body acting as a reaction force on the gate can naturally escape from the movement path of the gate by the natural flow of water. Will provide a step.

As such, the time set by the second timer 56 is set so as to secure enough space and time for the foreign matter that acted as a reaction force during the lowering operation of the initial floodgate to naturally escape from the path of the floodgate. What is necessary is just to set suitably according to the specification of the water gate and the water gate switch 1, and to use it. Of course, the setting time of the second timer 56 may also be changed according to the specification of the water gate and the channel environment using the input device.

Subsequently, when the ascending operation of the water gate switch 1 is completed in accordance with the set time of the second timer 56 as described above, the second time relay 57 transmits the power to the water gate switch 1. A predetermined time is set to temporarily stop the reverse (rising) rotation of the motor 2. As a result, the controller 50 stops the reverse rotation of the electric motor 2 for the time set in the second time relay 57 (about 2 to 3 seconds) and then operates simultaneously with the end of counting of the second time relay 57. With the counting operation of the third timer 58, the electric motor 2 is again operated forward (falling).

Subsequently, after the predetermined time has elapsed by the second time relay 57, the third timer 58 moves forward so that the controller 50 can operate the gate switch 1 in the forward direction (downward) again. The (falling) operating time is set, and the count completion signal is provided to the controller 50 as the set time is completed.

The third timer 58 is to perform the same operation function for the forward direction (falling) of the first timer 54 and the water gate switch 1 described above, the third timer (same as the first timer 54 58, that is, the time until the output of the lower limit switch 52 is applied is set in advance, so that the count completion signal is applied to the controller 50 as the set time is completed. do.

Here, it is useful that the time set through the third timer 58 is set by adding the time set in the second timer 56 to the time set in the above-described first timer 54. As a result, like the first timer 54, the control unit 50 is kept longer than the time until the output signal of the lower limit switch 52 is applied.

From the above configuration, it is assumed that foreign matter that acted as a reaction force in the ascending operation stage of the hydro-switch 1 through the second timer 56 is out of the movement path of the hydro- gate.

Since the third timer 58 has a time longer than a predetermined time until the control unit 50 receives the output signal of the lower limit switch 52 during the lowering operation of the water gate switch 1, Before the control unit 50 receives the output signal by the three timers 58, the control unit 50 receives the output signal of the lower limit switch 52, thereby realizing a stable and fully open state of the floodgate. At the same time, the operation of the water gate switch 1 is stopped and the power applied to the electric motor 2 of the water gate switch 1 is cut off.

On the contrary, if the foreign matter acting as a reaction force does not deviate from the movement path of the hydrologic gate, despite the ascending operation of the hydrologic switch 1 through the second timer 56,

Since the third timer 58 has a time longer than a predetermined time until the control unit 50 receives the output signal of the lower limit switch 52 during the lowering operation of the water gate switch 1, Although the control unit 50 receives the output signal from the third timer 58, when the output signal of the lower limit switch 52 is not applied, the overload condition in which reaction force is still generated from the foreign body from the foreign body is eliminated. It is recognized as not.

As such, according to one embodiment of the present invention, even when the first descending rocking motion of the hydrological is performed for a predetermined time through the first timer 54, the second timer 56, and the third timer 58, Nevertheless, when the foreign body is not removed and the reaction force (overload) is maintained in the descending movement path of the floodgate, it is judged as an abnormal state of the floodgate to prevent damage to the floodgate switch 1 due to continued overload. The power applied to the electric motor 2 of (1) can be cut off.

In this case, when the overload condition, that is, the arrival time of the output signal of the lower limit switch 52 to be completely closed is longer than the set time through the final third timer 58, the control unit 50 notifies. By operating the driving unit, it is preferable to notify the gatekeeper or the gatekeeper of the floodgate overload status using the notification means 59 such as a buzzer, a lamp, a display unit, and the like so that the user can cope immediately. The notifying means 59 made of the buzzer, the lamp, the display unit, etc. may be made of any one selected or may be made of one or more combinations.

On the other hand, according to another embodiment of the present invention, despite performing the one-way swinging movement of the hydrological through the first timer 54, the second timer 56, and the third timer 58, When the foreign body is not removed and the reaction force (overload) is maintained in the descending movement path of the water gate, the first time relay 55 and the above-described first time relay 55 are operated during the lowering operation of the water gate switch 1 through the third timer 58. The second timer 56, the second time relay 57, and the third timer 58 are sequentially operated again, so that the one-way swinging motion of the gate can be repeated several times.

The number of repetition of the one-way rocking motion of the gate according to another embodiment may be appropriately set according to the specifications of the water gate and the gate of the gate, and the waterway environment in which the gate is installed. Then, in spite of the final descending operation of the hydrological gate through the final third timer 58, when the foreign body is not removed and the overload of the hydrologic gate is maintained as it is, the same as in the above-described embodiment In order to prevent damage to the water gate switch 1 due to continued overload by judging an abnormal state of the door, the power applied to the electric motor 2 of the water gate switch 1 is cut off, and the water gate using the notification unit 59 is used. Notify your manager or hydrologic operator.

As described above, in the embodiment of the present invention, when the overload protection device having the active material removal function using the first timer 54, the second timer 56, and the third timer 58 is configured, the brake pad ( Auxiliary overload protection device 100 including slip prevention adjustment device 26 for securing uniform frictional resistance (torque) of 21) and preventing slip of the disc spring 24 is applied to the power train of the water gate switch 1 However, the auxiliary overload defense apparatus 100 is not necessarily provided, and an overload having an active material removal function using the first timer 54, the second timer 56, and the third timer 58. Only preventive devices can be applied.

However, in the present invention, for active removal of foreign matter using the first timer 54, the second timer 56, and the third timer 58, it is detected from the lower limit switch 52 to accurately determine that it is an overload condition. It is natural that the initial operating time of an overload condition is maintained a little more than the reference time taken to completely close the floodgate. Therefore, in order to prevent damage to the power train of the gate switch 1 from such an overload condition, Application of the overload protection device 100 is preferred.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(1): Sluice gate (2): Electric motor
(3): Electric reducer (31): Input shaft
32: sprocket 34: chain
(4): main reduction gear (41): output shaft
(5): rack bar (100): overload protection device
(11): one-way clutch 12: inner ring
(13): outer ring 14: roller bearing
(15): roller cam 21: brake pad
(23): Pressing plate (24): Dish spring
(25): Lock nut (26): Slip prevention adjuster
(50): control unit 51: upper limit switch
(52): Lower limit switch (53): Timer operation switch
(54): First Timer (55): First Time Relay
(56): Second Timer (57): Second Time Relay
(58): Third Timer (6): Indicator

Claims (8)

A water gate switch 1 for rotating the water gate up and down and rotating in the forward and reverse directions, an upper limit switch 51 for detecting the full opening of the water gate, a lower limit switch 52 for detecting the complete closure of the water gate, The control unit 50 for controlling the operation of the water gate switch 1 by receiving the position signal of the water gate output from the upper limit switch 51 and the lower limit switch 52,
A timer operation switch 53 for sensing a position in which the descending gate is partially opened from the bottom to a predetermined height and applying an output signal to the controller 50;
A first timer 54 in which a falling operation time of the water gate is set until the controller 50 receiving the output signal of the timer operation switch 53 receives the output signal of the lower limit switch 52;
If the output signal of the lower limit switch 52 is not applied even though the set time of the first timer 54 is exceeded, the controller 50 stops the operation of the water gate switch 1 for a predetermined time. The first time relay 55,
After the predetermined time has passed by the first time relay 55, the second timer 56 is set so that the lift operation time is set so that the control unit 50 to operate the gate switch 1;
After the set time of the second timer 56 has elapsed, a second time relay 57 for controlling the operation of the water gate switch 1 for a predetermined time, and
After the predetermined time has elapsed by the second time relay 57, the third timer 58 is set in which the operation time until the control unit 50 receives the output signal of the lower limit switch 52 is set. Overload prevention device of a hydro gate switch with active foreign matter removal function, including. The method of claim 1,
The controller 50 may lower the lower limit switch 52 in spite of exceeding the set time of the third timer 58 during the lowering operation of the water gate switch 1 during the operation time set in the third timer 58. When the output signal is not applied, the first time relay 55, the second timer 56, the second time relay 57, and the third timer 58 are repeatedly performed in order. Overload protection device for a hydro gate switch with active foreign matter removal. The method according to claim 1 or 2,
The controller 50 may lower the lower limit switch 52 in spite of exceeding the set time of the third timer 58 during the lowering operation of the water gate switch 1 during the operation time set in the third timer 58. If the output signal is not applied, the overload protection device of a hydro switch with a foreign material active removal function, characterized in that to cut off the power applied to the electric motor (2) of the hydro switch (1). The method of claim 3,
When the power applied to the electric motor 2 of the gate switch 1 is cut off, the controller 50 is made of any one of a buzzer, a lamp, and a display unit so as to inform the user of an overload condition. Overload protection device of the water gate switch with active removal of foreign substances, characterized in that it comprises a notification means 59 made of a combination. The method of claim 1,
The partial opening position of the water gate in which the timer operation switch 53 operates is an area between 1/3 * H and 1/2 * H from the bottom with respect to the height H from the bottom to the water gate in the fully open state. Overload protection device for a hydro gate switch with active foreign matter removal. The method of claim 1,
The hydrogate switch 1 includes an auxiliary overload prevention device 100 in a power transmission system connecting the electric motor 2 and the main decelerator 4 to overload the hydrogate switch having the foreign matter active removal function. Prevention device. The method of claim 6,
The auxiliary overload preventing device 100 includes an input shaft 31 of the electric reducer connected to the electric motor 2, a sprocket 32 connected to an output shaft of the main reducer by a chain, and the input shaft 31 and the sprocket 32. Including a one-way clutch 11 for connecting),
The pressure plate 23 and the input shaft shaft is coupled to the other end of the input shaft 31 passing through the sprocket 32 is provided with a strip-shaped brake pad 21 on one side facing the side surface of the sprocket 32, 31 is fitted to the plate spring 24 for supporting the other side of the pressing plate 23, and the lock nut 25 is coupled to the end of the input shaft 31 to support the plate spring 24 fixedly The overload protection device of the water gate switch with active debris function, characterized in that configured by. The method of claim 7, wherein
A plurality of slip prevention for screwing each of the plurality of threaded holes 251 formed at equal intervals to the lock nut 25, each end penetrating the lock nut to press one surface of the dish spring (24) Overload protection device of the water gate switch having an active material removal function, characterized in that configured to include a control mechanism (26).

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