KR102172550B1 - Pin-Jack Winch and sluice with safety device - Google Patents

Abstract

The present invention relates to a safety device for a pin-jack winch. According to the present invention, the safety device for a pin-jack winch comprises: a worm shaft support unit (130); and a worm shaft position detecting unit (170) provided in a path of a worm shaft (132), wherein the worm shaft position detecting unit (170) comprises a round bar (171), an abnormal state detecting switch (175), and a normal state detecting switch (173). According to the present invention, damage to the worm shaft can be prevented.

Description

Pin-Jack Winch and sluice with safety device}

The present invention relates to a safety device for a pin-jek lifter and a sluice gate, and more particularly, to a safety device that is coupled to the pin-jek lifter to protect a pin-jek lifter, a sluice door, a recreation bar, and a structure in an emergency.

Recently, the weather conditions in Korea have changed so much that it is impossible to predict precipitation. Therefore, it is necessary to thoroughly manage rivers and reservoirs, and pay special attention to the reservoir and drainage (drainage pumping station) in preparation for flooding, and focus on water resource management.At this time, it can be said that the hydrogate plays a representative role. .

Hydrogate technology is currently developing and improving not only in Korea but also in the world. In recent years, the atmosphere is unstable due to environmental pollution and global warming, so the amount of precipitation is unpredictable. In particular, the localized heavy rain has resulted in a lot of loss of life and property. It is today's reality that due to frequent excess capacity, flood damage continues.

In addition, due to the damage caused by the reverse flow of the river and the collapse of the embankment, many houses and antelopes are submerged in the water, making all people sad. Therefore, it can be seen that the role of the floodgate plays an important role in protecting the property of the public interest, since it is necessary to take full measures against the defense.

The sluice gate is used for the following purposes. First, the role of trapping water in reservoirs and using it as agricultural water. Second, it blocks the backflow of rivers and prevents flooding of agricultural land. Third, when the water level rises due to localized torrential rain or flood, it plays a role of discharging rainwater by opening and closing the sluice gate.

In general, the operation of the sluice gate has been applied to stop the operation of the sluice gate by operating the limit switch corresponding to the upper/lower limit values during ascent and descent, but the operation of the sluice gate cannot be stopped due to a defect such as a limit switch. In this case, there is a problem in that a stress exceeding the allowable stress is generated in the sluice gate and the mechanical device, causing damage.

In addition, there is a problem in that the machine is damaged due to the influence of various floating objects, dirt, or other impurities because there is no special device that can detect impurities on the lower, upper, and side surfaces of the sluice gate when the sluice gate is raised or lowered. .

In addition, there are frequent cases in which the sluice gate installed by the people's blood is not equipped for disaster prevention due to the inadequate safety device installation, leading to the damage of the Pinzek winder and sluice gate in an emergency. This has a big problem that not only the people's taxes are wasted, but the life and property of the precious people are threatened.

Registered Patent No. 10-0468877 "Sprag Jack Pin-Jek Winding Machine" Patent Publication No. 10-2005-0048289 "Safety device for preventing overload of pin-jek winding machine"

An object of the present invention is to solve the above-described problem, and an overload is generated in the driving motor due to impurities, and power supply to the driving motor is quickly cut off to prevent damage to mechanical devices such as pin-jet winders, sluice gates, and rack bars. It is to provide a safety device for Pin-Jek winding machines.

Another object of the present invention is to provide a safety device for a pin-jack lifter that can prevent damage to the worm shaft by moving the worm shaft back and forth by tension when excessive stress is generated in the pin-jack lifter, sluice gate, rack bar, etc. due to pinching of impurities.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

An object of the present invention is by a safety device for a pin-jek lifter that prevents the problem that excessive stress is generated in the pin-jek lifter and other device devices by being coupled to a pin-jek lifter that allows the sluice gate to open and close by transmitting the forward and reverse rotation of the driving motor to the rack bar. Can be achieved. The safety device for a pin-Jek winding machine of the present invention is coupled to the drive shaft 21 of the drive motor 20 to transmit the rotational force of the drive motor 20, and the worm shaft 132 can be moved back and forth according to the operating state of the sluice gate. A worm shaft support part 130 for supporting it; Includes a worm shaft position sensing unit 170 provided on the path of the worm shaft 132 to sense the movement of the worm shaft 132 back and forth, and the worm shaft position sensing unit 170 includes an upper portion of the worm shaft 132 A round bar 171 coupled to the worm shaft 132 to protrude a predetermined length; An abnormal state detection switch that detects by contact with the round bar 171 that the worm shaft 132 is moved from an initial position to an abnormal position in the front when the drive motor 20 rotates while the sluice gate is stopped ( 175) and; It includes a normal state detection switch 173 for detecting whether the worm shaft 132 is returned to the initial position by contact with the round bar 171, and the abnormal state detection switch 175 is the round bar 171 When in contact with, the power supply to the driving motor 20 is cut off, and after the abnormal state detection switch 175 detects the round bar 171, the normal state detection switch 173 detects the round bar 171 When the driving motor 20 includes a control unit 190 for turning on an indicator (not shown) indicating that power can be supplied to the stable state, the worm shaft support unit 130, the worm shaft 132 A motor coupling cover part 133 coupling one end of the worm shaft 132 to the drive shaft 21 of the drive motor 20 so as to be rotated by receiving the driving force of the drive motor 20; It includes a worm shaft coupling cover part 135 provided at the other end of the worm shaft 132 to support the worm shaft 132 to be rotated and to act as a tension so that the round bar 171 in the abnormal position is returned to the initial position, One end of the worm shaft 132 is provided with a motor coupling gear (132a) coupled to the drive motor (20), and a coupling end (132b) coupled to the worm shaft coupling cover portion (135) is provided at the other end, and the The motor coupling cover part 133 includes a motor coupling bracket (133a) and a motor coupling cover (133b) accommodating the motor coupling gear (132a) and the drive shaft (21) therein; A first bushing (133c) for supporting the motor coupling gear (132a) to be rotated and moved back and forth; A first ball bearing (133d) for supporting the drive shaft 21 to rotate; The first bushing (133c) is coupled to the motor coupling cover (133b) at regular angular intervals in the circumferential direction to support the worm shaft (132) coupled to the motor coupling gear (132a) to elastically move back and forth It may include one spring (133e).

delete

According to an embodiment, the worm shaft coupling cover part 135 includes a worm shaft cover 135a and a cover snap ring 135f accommodating the coupling end 132b therein; A second ball bearing (135b) rotatably supported by the coupling end (132b); A second bushing (135c) supporting the coupling end (132b) to be moved back and forth; A plurality of second springs (135d) coupled to the worm shaft cover (135a) in the circumferential direction of the second bushing (135c) to support the worm shaft (132) to be moved back and forth; A tension control plate (135g) provided on an inner wall surface of the worm shaft cover (135a) and coupled to the plurality of second springs (135d); It is screwed from the outside of the worm shaft cover (135a) to the worm shaft cover (135a) to adjust the position of the worm shaft cover (135a) inside the worm shaft cover (135a) to adjust the tension of the second spring (135d) It may include a tension adjustment bolt (135h).

According to an embodiment, when the power supply to the driving motor 20 is cut off by the control unit 190, the worm shaft 132 advanced to the abnormal position is transferred to the plurality of first springs 133e and the first spring. 2 The spring 135d elastically returns to the initial length, and the worm shaft 132 can be returned to the initial position by applying a tension to the worm shaft 132.

According to an embodiment, a damage prevention cap 171b that prevents damage in physical contact with the abnormal state detection switch 175 or the normal state detection switch 173 is coupled to the upper end of the round bar 171, and the The abnormal state detection switch 175 and the normal state detection switch 173 are located in a diagonal direction with respect to the round bar 171, and the damage prevention cap 171b is less than a radius of the abnormal state detection switch 175 side. The abnormal state detection switch 173 side radius may be formed to be eccentric to be longer.

The safety device according to the present invention can prevent damage to the worm shaft by buffering the movement of the worm shaft by a spring when the worm shaft is pushed forward in an abnormal state in which the sluice gate is not opened and closed by impurities, and the worm shaft can be moved to the initial position. To be.

In addition, when the round bar that is moved back and forth in connection with the movement of the worm shaft comes into contact with the abnormal state detection switch, the power supply to the driving motor is cut off, thereby preventing damage to the connected mechanical devices such as pin-jack lifters, sluice gates, and rack bars. have.

1 is a perspective view showing the configuration of a safety device according to the present invention,
Figure 2 is an exploded perspective view showing the disassembled configuration of the safety device according to the present invention,
3 is a cross-sectional view showing a cross-sectional configuration of a safety device according to the present invention
4 is a plan view showing a plan configuration of a worm shaft position sensing unit of the safety device according to the present invention;
5 is an exemplary view showing the configuration when the safety device according to the present invention is in an abnormal position;
6 and 7 are views showing a modified example of the worm shaft position detection unit of the safety device according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those with average knowledge in the art. Accordingly, the shape of the element in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral. Detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a perspective view showing the configuration of a safety device 100 according to the present invention.

The pin-Jek winding machine transfers the rotational force of the drive motor 20 to the rack bar supporting the sluice gate to open and close the sluice gate. If there are impurities around the sluice gate, the sluice gate cannot be moved up and down despite the driving motor 20 being driven. If the driving motor 20 is continuously driven while the sluice gate is stopped, an overload occurs in the driving motor 20.

The safety device 100 of the present invention prevents an overload from occurring on the driving motor 20 by cutting off power supply to the driving motor 20 in an abnormal state in which the sluice gate is not properly opened or closed.

The safety device 100 is coupled to the driving motor 20 to receive the driving force of the driving motor 20 to support the worm shaft 132 that rotates, and detects the back and forth movement of the worm shaft 132 The worm shaft position sensing unit 170 to control power supply to the power supply unit 180 according to the detection result of the worm shaft position sensing unit 170, the power supply unit 180 supplying power to the driving motor 20, and the worm shaft position sensing unit 170 It includes a control unit 190.

Figure 2 is an exploded perspective view showing the configuration of the safety device 100 of the present invention, Figure 3 is a cross-sectional view showing a cross-sectional configuration.

As shown in FIGS. 2 and 3, the driving motor 20 is coupled to the worm shaft support 130 to transmit rotational force. The worm shaft 132 of the worm shaft support part 130 is coupled to the drive shaft 21 of the drive motor 20 to transmit the rotational force of the drive motor 20 to the worm gear support part 40. The worm gear support portion 40 transmits the rotational force of the drive motor 20 to a reduction unit (not shown), and the reduction unit (not shown) transfers to a rack bar to open and close the sluice gate. An external gear 23 is coupled to the drive shaft 21 of the drive motor 20.

The worm shaft support unit 130 supports the worm shaft 132 to rotate smoothly by receiving the rotational force of the driving motor 20, and supports the worm shaft 132 to move back and forth in an abnormal state.

The worm shaft support part 130 includes a worm shaft 132 coupled to the drive shaft 21 of the drive motor 20, a motor coupling cover part 133 coupling one end of the worm shaft 132 to the drive shaft 21, and a worm shaft. It is coupled to the other end of the worm shaft 132 and includes a worm shaft coupling cover portion 135 for supporting rotation.

The worm shaft 132 has a worm gear formed on its outer circumferential surface. The worm shaft 132 is coupled to the drive shaft 21 of the drive motor 20 by a motor coupling cover part 133 so that the drive shaft 21 rotates forward and backward together, and the rotational force of the drive motor 20 is applied to the worm gear support part 40. It is transmitted to the worm gear 42a.

One end of the worm shaft 132 is provided with a motor coupling gear (132a) that meshes with the external gear (23) coupled with the drive shaft (21), and the other end of the worm shaft (132) is coupled to the worm shaft coupling cover (135) Step 132b is provided.

The motor coupling gear 132a is formed with a gear train meshing with the external gear 23 on the inner wall surface. The motor coupling gear (132a) is engaged with the external gear (23) to receive the rotational force of the drive shaft (21). The coupling end (132b) is coupled to the inside of the second ball bearing (135b) of the worm shaft coupling cover portion (135).

The motor coupling cover part 133 is coupled to the motor coupling gear 132a of the worm shaft 132 and the drive shaft 21 so that the rotational force of the drive shaft 21 is transmitted to the worm shaft 132, and the worm shaft 132 in an abnormal state It is elastically supported so that it can be moved forward by pushing a certain length.

The motor coupling cover part 133 includes a motor coupling bracket 133a coupled to the drive motor 20 through which the drive shaft 21 is inserted, a motor coupling cover 133b coupled to the motor coupling bracket 133a, and a motor coupling A first bushing (133c) provided to be elastically movable back and forth within the bracket (133a), and a first ball bearing (133d) disposed on the outer peripheral surface of the motor coupling gear (132a) to support the motor coupling gear (132a) to rotate ), and a plurality of first springs (133e), which are arranged at regular intervals along the circumferential direction of the first bushing (133c) and coupled to the motor coupling cover (133b), and are inserted into the first spring (133e). It includes a first bolt (133f) coupled between the first bushing (133c) and the motor coupling cover (133b) to support the first spring (133e).

The worm shaft coupling cover part 135 has a worm shaft cover (135a), a coupling end (132b) inserted into the interior, and a cover snap ring (135f) coupled with the worm shaft cover (135a), and a coupling inserted into the worm shaft cover (135a) Arranged between the second ball bearing (135b) supporting the end (132b) to rotate, the second bushing (135c) surrounding the outside of the second ball bearing (135b), and the second bushing (135c) and the worm shaft cover (135a) A plurality of second springs (135d), a tension control plate (135g) disposed on the inner wall surface of the worm shaft cover (135a) and coupled to the plurality of second springs (135d), and a tension control plate from the outside of the worm shaft cover (135a) It includes a tension adjustment bolt (135h) screwed to (135g).

The motor coupling cover part 133 and the worm shaft coupling cover part 135 allow the worm shaft 132 to rotate smoothly by receiving the rotational force of the drive shaft 21. To this end, the first ball bearing 133d and the second ball bearing 135b are disposed at both ends of the worm shaft 132.

The first spring (133e) and the second spring (135d) are coupled to the first bushing (133c) and the second bushing (135c), and the sluice gate (20) is trapped in the sluice gate (20) or due to other problems. In this stopped abnormal state, the worm shaft 132 is elastically pushed back and forth for a predetermined distance to be moved, thereby preventing the worm shaft 132 from being damaged.

The tension adjusting bolt 135h adjusts the tension of the second spring 135d so that the worm shaft 132 is pushed back and forth. The tension adjustment bolt (135h) is screwed to the tension adjustment plate (135g). The operator rotates the tension adjustment bolt 135h exposed to the outside to adjust the position of the tension control plate 135g inside the worm shaft cover 135a.

As shown in FIG. 3, when the tension control plate 135g is located in close contact with the inner wall surface of the worm shaft cover 135a, the tension of the second spring 135d is adjusted to the smallest. In this state, when the operator rotates the tension adjustment bolt 135h, the tension control plate 135g is spaced from the inner wall surface of the worm shaft cover 135a to the inside, and the plurality of second springs 135d are shortened and compressed. Accordingly, the tension by which the second spring 135d pushes the worm shaft 132 toward the motor coupling cover 133b is increased.

The operator checks how far the worm shaft 132 is pushed forward in an abnormal state in which the worm gear 42a is not rotated during equipment setup, and adjusts the tension of the second spring 135d by operating the tension adjusting bolt 135h accordingly. Adjust.

4 is a plan view showing a planar configuration of the worm shaft position detecting unit 170. As shown in FIGS. 1 to 4, the worm shaft position detecting unit 170 detects the position of the worm shaft 132 in an abnormal state in which the sluice door 20 cannot move up and down due to impurities in the sluice door 20.

The worm shaft position detection unit 170 of the present invention includes a round bar 171 provided to protrude in a vertical direction from the worm shaft 132, a normal state detection switch 173 and an abnormal state detection switch for detecting the position of the round bar 171 Includes 175.

The round bar 171 is fixedly coupled to the other end of the worm shaft 132 by a round bar coupling ring 172. The round bar 171 extends for a predetermined length in the vertical direction from the worm shaft 132.

During the operation of opening and closing the sluice door 20 by operating the driving motor 20, when the sluice door 20 is stuck in the sluice door 20 or the sluice door 20 cannot move up and down due to other reasons, the worm gear 42a cannot be rotated either.

The drive motor 20 is continuously driven and the worm shaft 132 is rotated, but the worm gear 42a coupled to the worm shaft 132 is not rotated and is stationary, so the worm shaft 132 is pushed forward by the rotating force. Will move.

When the worm shaft 132 is pushed and moved from the normal state to the abnormal state, the first spring (133e) coupled to the first bushing (133c) of the motor coupling cover part 133 extends longer than the initial length, and the worm shaft coupling cover part ( The second spring 135d coupled to the second bushing 135c of 135) is compressed than the initial length.

Since the round bar 171 is vertically coupled to the axis of the worm shaft 132, it moves linearly together in conjunction with the back and forth movement of the worm shaft 132.

As shown in FIG. 3, the steady state detection switch 173 is provided in a position in which the round bar 171 is in a normal state, that is, the opening and closing of the sluice door 20 is normally operated to detect the position of the round bar 171.

The abnormal state detection switch 175 is in an abnormal position in which the round bar 171 is pushed forward, that is, in an abnormal position where the worm shaft 132 is pushed forward because the opening and closing of the sluice door 20 is not operated normally. It is provided to detect the position of the round bar 171. When the abnormal state detection switch 175 is in physical contact with the round bar 171 and detects the round bar 171, the control unit 190 controls the power supply unit 180 so that power supplied to the driving motor 20 is cut off.

In addition, the normal state detection switch 173 detects whether the round bar 171 that has been pushed forward and moved to an abnormal position is returned to the initial position.

The normal state detection switch 173 and the abnormal state detection switch 175 sense the position based on physical contact with the round bar 171. The normal state detection switch 173 and the abnormal state detection switch 175 are preferably disposed in a diagonal direction to each other in order not to interfere with the movement of the round bar 171 at the same time while efficiently using the space.

As shown in Fig. 4, the normal state detection switch 173 is provided to protrude from the end of the first horizontal lever 173a protruding horizontally and the first horizontal lever 173a to contact the round bar 171 It includes a first round bar contact terminal (173b) and a first elastic support member (173c) for elastically supporting the first horizontal lever (173a).

The abnormal state detection switch 175 includes a second horizontal lever 175a, a second round bar contact terminal 175b, and a second elastic support member 175c, similarly to the normal state detection switch 173.

Here, the reference distance d1 at which the round bar 171 is moved from the initial position to the abnormal position is usually 2.5cm to 3.5cm.

At this time, the second round bar contact terminal 175b of the abnormal state detection switch 175 is designed to be located spaced apart by a reference distance d1 from the initial position. Accordingly, even if the round bar 171 is moved forward by 2.7 cm shorter than the set distance, 3 cm, the abnormal state detection switch 175 does not detect the round bar.

On the other hand, the steady state detection switch 173 is located at a position shorter than the set reference distance d1. That is, the second round bar contact terminal (175b) of the abnormal state detection switch 175 is located outside the reference distance (d1) so that the round bar 171 must be moved beyond the reference distance (d1) to be in contact, but the first round bar contact terminal ( 173b) is located on the boundary position X of the reference distance d1 to detect the round bar 171 even if the round bar 171 is returned below the reference distance.

As shown in Fig. 5, when the worm gear 42a is stopped and the worm shaft 132 is pushed forward from the initial position and the second round bar contact terminal 175b touches and senses the round bar 171, the controller 190 Controls the power supply unit 180 to cut off power supply to the driving motor 20.

The drive motor 20 is idle when the power supply is cut off. If the driving force from the driving motor 20 is not applied, the force pressing the first spring (133e) and the second spring (135d) disappears, so the first spring (133e) and the second spring (135d) return to their initial length. To do this, a tension is applied to the worm shaft 132. Due to the tension of the first spring 133e and the second spring 135d, the worm shaft 132 is returned to the initial position, and the round bar 171 is also returned to the initial position.

The normal state detection switch 173 sets a wide range in which the round bar 171 returned to the initial position is returned to the boundary of the reference distance d1 so that it can be judged that it has returned even if it is not completely restored to the reference distance d1. Is located in

When the abnormal state detection switch 175 detects the round bar 171, the control unit 190 cuts off power supply to the driving motor 20 until the normal state detection switch 173 detects the round bar. When the steady state detection switch 173 detects the round bar, it indicates that it is in a safe state in which power can be supplied to the driving motor 20 by lighting an indicator (not shown) of the field control panel. When the indicator light (not shown) is lit, the operator supplies power to the driving motor 20.

Due to the double sensing operation of the worm shaft position sensing unit 170, it is possible to effectively prevent damage that may occur due to operation of the device for each function in an abnormal state.

Meanwhile, FIG. 6 is a view showing a modified example of the worm shaft position detecting unit 170'. As shown, in the steady state detection switch 173' according to the modified example, the inclination lever 173a' supports the first round bar contact terminal 173b'. The inclination lever 173' is positioned at a certain angle to detect the round bar 171' even if the round bar 171' moved to an abnormal state enters a wider range from the normal position.

At this time, the round bar 171 ′ may be coupled with a damage-preventing cap 171b at the upper end, as shown in FIG. 7 (a). The damage prevention cap 171b prevents the round bar 171' from being damaged by being moved together with the worm shaft 132 and in contact with the normal state sensing switch 173 or the abnormal state sensing switch 175. The damage prevention cap 171b is formed of a material having elasticity such as rubber or silicone.

The upper end of the round bar (171') is provided with a cap coupling groove (171a) that is fitted with a damage prevention cap (171b) to fix the position.

Here, the damage prevention cap (171b) may be formed in a concentric circle shape with the round bar (171') as shown in Figure 7 (b), in some cases, as shown in Figure 7 (c) round bar ( 171') may be formed in an eccentric shape in one direction.

That is, for the round bar 171', as shown in FIG. 6, the abnormal state detection switch 175 side has a short length (a) of the damage prevention cap 171b, and the normal state detection switch 173 side prevents damage. The length b of the cap 171b is formed to be long. Accordingly, the inclined lever 173a' can detect the round bar 171' in a wider range than when the round bar 171' returns to a normal position from an abnormal position.

The operation process of the safety device 100 according to the present invention having such a configuration will be described with reference to FIGS. 1 to 7.

When there are no impurities in the sluice gate, the rotational force of the driving motor 20 is transmitted to the worm gear 42a through the worm shaft 132. Then, the combined rack bar of the sluice gate is driven up and down by an electric means connected to the worm gear 42a to open and close the sluice gate.

When there are no impurities in the sluice gate, the round bar 171 maintains a state in contact with the normal state detection switch 173 as shown in FIG. 3.

On the other hand, when there is an impurity in the sluice gate during the opening and closing operation of the sluice gate 20, the vertical movement of the sluice gate stops. When the sluice gate operates abnormally, the worm gear 42a stops rotating and the worm shaft 132 is pushed forward and moves.

When the worm shaft 132 is pushed forward and moved, the round bar 171 in contact with the normal state sensing switch 173 comes into contact with the abnormal state sensing switch 175 as shown in FIG. 5. When the abnormal state detection switch 175 contacts the round bar 171, the control unit 190 controls the power supply unit 180 to cut off the power supply to the driving motor 20.

When the power supply of the drive motor 20 is cut off, the drive motor 20 is idle, and the worm shaft 132 has springs 133e, 135d provided in the motor coupling cover part 133 and the worm shaft coupling cover part 135. It returns to the initial position by the tension of ).

When the worm shaft 132 returns to the initial position, the round bar 171 is in contact with the normal state detection switch 173 again, and the control unit 190 indicates that it is in a stable state in which power can be supplied to the driving motor 20 (Not shown) is lit to display, and the operator restarts the drive motor 20 by seeing an indicator (not shown).

As described above, the safety device according to the present invention can prevent damage to the worm shaft by buffering the movement of the worm shaft by a spring when the worm shaft is pushed forward in an abnormal state in which the sluice gate is not opened and closed by impurities, and the worm shaft is initially Allows it to be moved to a location.

In addition, when a round bar that is moved back and forth in conjunction with the movement of the worm shaft contacts an abnormal state detection switch, power supply to the driving motor is cut off, thereby preventing damage to each device or device driven by the driving motor.

The embodiments of the safety device for a pin-jek winding machine described above are merely exemplary, and those of ordinary skill in the art to which the present invention belongs can make various modifications and other equivalent embodiments possible. You will know well. Therefore, it will be appreciated that the present invention is not limited to the form mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. In addition, the present invention is to be understood as including the spirit of the present invention as defined by the appended claims and all modifications, equivalents and substitutes within the scope thereof.

20: drive motor 21: drive shaft
23: external gear 40: worm gear support
42: worm gear shaft 42a: worm gear
100: safety device 130: worm shaft support
132: worm shaft 132a: motor coupling gear
132b: coupling end 133: motor coupling cover portion
133a: motor coupling bracket 133b: motor coupling cover
133c: first bushing 133d: first ball bearing
133e: first spring 133f: first bolt
135: worm shaft coupling cover part 135a: worm shaft cover
135b: second ball bearing 135c: second bushing
135d: second spring 135e: second bolt
135f: cover snap ring 135g: tension control plate
135h: tension adjustment bolt 170: worm shaft position detection unit
171: round bar 171a: cap coupling groove
171b: damage prevention cap 172: round bar coupling ring
173: steady state detection switch 173a: first horizontal lever
173b: first round bar contact terminal 173c: first elastic support member
175: abnormal state detection switch 175a: second horizontal lever
175b: second round bar contact terminal 175c: second elastic support member
180: power supply unit 190: control unit

Claims (5)

In the safety device for a pin-jek winding machine for preventing overload of the driving motor by being coupled to a pin-jek winding machine for opening and closing a sluice gate by transmitting the forward and reverse rotation of the driving motor to the rack bar,
The worm shaft support 130 is coupled to the drive shaft 21 of the drive motor 20 to transmit the rotational force of the drive motor 20 and support the worm shaft 132 to be moved back and forth according to the operation state of the sluice gate, ;
It is provided on the path of the worm shaft 132 and includes a worm shaft position detection unit 170 for detecting the front and rear movement of the worm shaft 132,
The worm shaft position detection unit 170,
A round bar 171 coupled to the worm shaft 132 to protrude a predetermined length above the worm shaft 132;
An abnormal state detection switch that detects by contact with the round bar 171 that the worm shaft 132 is moved from an initial position to an abnormal position in the front when the drive motor 20 rotates while the sluice gate is stopped ( 175) and;
It includes a normal state detection switch 173 for sensing whether the worm shaft 132 is returned to the initial position by contact with the round bar 171,
When the abnormal state detection switch 175 contacts the round bar 171, power supply to the driving motor 20 is cut off, and after the abnormal state detection switch 175 detects the round bar 171, the normal When the state detection switch 173 detects the round bar 171, it includes a control unit 190 for turning on an indicator (not shown) indicating that power can be supplied to the driving motor 20 in a stable state,
The worm shaft support part 130,
A motor coupling cover part 133 coupling one end of the worm shaft 132 to the drive shaft 21 of the drive motor 20 so that the worm shaft 132 is rotated by receiving the driving force of the drive motor 20;
It includes a worm shaft coupling cover part 135 provided at the other end of the worm shaft 132 to support the worm shaft 132 to be rotated and to act as a tension so that the round bar 171 in the abnormal position is returned to the initial position,
One end of the worm shaft 132 is provided with a motor coupling gear (132a) coupled to the drive motor (20), and a coupling end (132b) coupled to the worm shaft coupling cover portion (135) is provided at the other end,
The motor coupling cover part 133,
A motor coupling bracket (133a) and a motor coupling cover (133b) accommodating the motor coupling gear (132a) and the drive shaft (21) therein;
A first bushing (133c) supporting the motor coupling gear (132a) to be rotated and moved forward and backward;
A first ball bearing (133d) for supporting the drive shaft 21 to rotate;
The first bushing (133c) is coupled to the motor coupling cover (133b) at regular angular intervals in the circumferential direction to support the worm shaft (132) coupled to the motor coupling gear (132a) to elastically move back and forth. A safety device for a pin-jeek winding machine comprising a spring (133e).
delete The method of claim 1,
The worm shaft coupling cover part 135,
A worm shaft cover (135a) and a cover snap ring (135f) accommodating the coupling end (132b) therein;
A second ball bearing (135b) rotatably supported by the coupling end (132b);
A second bushing (135c) supporting the coupling end (132b) to be moved back and forth;
A plurality of second springs (135d) coupled to the worm shaft cover (135a) in the circumferential direction of the second bushing (135c) to support the worm shaft (132) to be moved back and forth;
A tension control plate (135g) provided on an inner wall surface of the worm shaft cover (135a) and coupled to the plurality of second springs (135d);
It is screwed from the outside of the worm shaft cover (135a) to the worm shaft cover (135a) to adjust the position of the worm shaft cover (135a) inside the worm shaft cover (135a) to adjust the tension of the second spring (135d) A safety device for a pin-jeek winding machine, characterized in that it comprises a tension adjustment bolt (135h).
The method of claim 3,
When the power supply to the driving motor 20 is cut off by the control unit 190,
The worm shaft 132 advanced to the abnormal position is elastically restored to the initial length of the plurality of first springs (133e) and the second springs (135d), and the worm shaft (132) acts as a tension to the worm shaft (132). ) To return to the initial position.
The method according to any one of claims 1, 3 and 4,
A damage prevention cap 171b that prevents damage in physical contact with the abnormal state detection switch 175 or the normal state detection switch 173 is coupled to the upper end of the round bar 171,
The abnormal state detection switch 175 and the normal state detection switch 173 are located in a diagonal direction with respect to the round bar 171,
The damage prevention cap (171b) is a safety device for a pin-jeek winding machine, characterized in that formed to be eccentric so that the radius on the side of the normal status detection switch 173 is longer than the radius on the side of the abnormal status detection switch (175).

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