JP2013234473A - Sluice opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sluice opening/closing device equipped with: an actuation interlock mechanism for actuating self-weight descending devices of both left and right side opening/closing machines in connection with each other, when electric power is failed in the case of emergency, disaster, or the like; a wire rope overload/sagging detection device; and a wire rope length adjustment device.SOLUTION: A sluice opening/closing device 1 is equipped with self-weight descending devices 6, and moves a door body 3 up and down by a pair of opening/closing machines 4, 4 each comprising an electric motor 5 and a rope take-up drum 7 to open and close a sluice. An actuation interlock mechanism (20) which actuates one opening/closing machine 4 and thereby actuates the self-weight descending device 6 of the other opening/closing machine 4 is provided between the pair of opening/closing machines 4, 4. Thus, the self-weight descending devices 6, 6 of the left and right side opening/closing machines 4, 4 can be actuated in connection with each other to allow the door body 3 to be lowered by its own weight even when electric power is failed in the case of emergency, disaster, or the like.

Description

  The present invention relates to an operation interlocking mechanism that operates the own weight lowering devices of the left and right switches in conjunction with each other when the power supply is lost in an emergency or disaster, a wire rope overload / slack detection device, and a wire rope length. The present invention relates to a sluice gate opening / closing device provided with a height adjusting device.

  Conventionally, in sluice gates that have a large span as applied to dam sluice facilities and river or waterway sluice facilities and have a large load during opening and closing operations, they are located on both sides of the door body, and the door body is moved up and down. A sluice opening / closing device is used in which each gate pillar that guides the door is provided with an opening / closing machine having an electric motor and a wire rope winding drum.

  As a conventional sluice opening and closing device, Patent Document 1 discloses that one end of one wire rope that raises and lowers a door body is hooked on a wire rope winding drum of one opening and closing device, and the other end of the one wire rope is Hang on the rope end of the gate pillar on the side where one switch is installed via one pulley installed on the sluice equipment and door body, and wire rope winding of the other switch on one end of the other wire rope The other end of the other wire rope is hooked to the rope end of the gate pillar on the side where the other switch is installed via the other pulley installed on the sluice gate and the door body. A sluice opening and closing device wired in this manner is disclosed.

In the sluice open / close device according to Patent Document 1, since the left and right switches need to be operated independently, the left and right switches need to be synchronized in order to move up and down without tilting the door body. . Therefore, in order to perform such synchronization control, for example, an electrical opening degree meter is provided in the left and right switches, and the opening difference between the opening signals of the opening meters of the left and right switches is determined. When a predetermined opening degree difference is detected, a method is implemented in which the motor of the preceding opening / closing switch is stopped to control the opening degree difference (Prior Art 1).
In the sluice gate opening and closing device according to the prior art 1, the tuning control of the left and right switches can be performed only during the electric operation. In this case, if any one of the opening gauges is damaged, it becomes impossible to perform the synchronization control of the left and right switches, and if any one of the switches fails, the door body cannot be lifted or lowered. In addition, since it is difficult to synchronize the braking device, it is not possible to add a self-weight lowering device, and when the wire rope breaks during the lifting or lowering operation of the door body or when it is fully opened, the broken door body falls and the door body body Or the surrounding structure may be damaged.

Therefore, in order to eliminate the functional limitation of the conventional sluice switchgear, a sluice switchgear that does not require tuning control of the left and right switchgear has been put into practical use (prior art 2).
The sluice gate opening / closing device according to prior art 2 includes left and right switches as in the sluice gate opening / closing device according to prior art 1, but one wire rope hooked on the wire rope take-up drum of one switch. The other wire hooked on the wire rope take-up drum of the other opening / closing machine and the other wire hooked on the wire rope take-up drum of the other opening / closing machine via one pulley installed on the sluice gate and the door body The rope is wired so as to be hooked to the wire rope take-up drum of one of the opening / closing machines via the other pulley installed on the sluice gate and the door body.
And in the sluice gate opening and shutting device according to the prior art 2, it is possible not only to drive both switches simultaneously, but also to lift and lower while keeping the door body horizontal even when driving one switch. Therefore, it is not necessary to perform synchronized control of the left and right switches even during an electric operation and when the weight of the door is lowered.

  In the sluice gate opening and closing device according to the related art 2, for example, the number of wire ropes can be changed depending on the opening and closing load. Moreover, the capacity | capacitance of one wire rope winding drum can be made into the capacity | capacitance which can wind 1/2 of the whole lift. Furthermore, the opening / closing speed of one of the motors can be set to a predetermined speed by setting the speed to one half of the predetermined speed and simultaneously operating the left and right motors. Furthermore, the rotation speed of the wire rope take-up drum when the door body is lowered by its own weight can be controlled by its own weight drop device. Furthermore, the start of the weight drop of the door can be started by releasing the hydraulic push-up brake that locks the weight drop device by an electric operation or a manual operation.

  Moreover, in the sluice gate opening and closing device according to the prior art 2, if the winding capacity of the wire rope winding drum is doubled as usual, in addition to the mechanical tuning function, only one of the opening and closing machines can be used. It is possible to open and close the entire head at the opening and closing speed. Furthermore, since the left and right wire ropes are evenly hung on both sides as well as on one side of the door body, there is no risk of the door body being suspended or dropped even if one of the wire ropes is damaged. Furthermore, even if the motor of one switch breaks down, the motor of the other switch can be used to operate the motor at half the normal opening / closing speed. There is no need to duplicate the motors to ensure certainty.

JP 2007-23510 A

  In the sluice gate opening and closing device according to Patent Document 1 and Prior Art 1 described above, the opening and closing control of the door body can be performed by synchronizing the left and right switches, but this door body opening and closing control requires the operation of an electric motor. Therefore, it cannot be performed if the power supply is lost during an emergency or disaster. In addition, since it is necessary to control the left and right switches in synchronism, if one of the switches breaks down, it is impossible to lower the weight of the door, and either one of the wire ropes If the door is damaged, it is impossible to raise and lower the door body in an equilibrium state.

  Further, in the sluice gate opening and closing device according to the above-described prior art 2, for example, when the door body is lowered by its own weight when power is lost in an emergency or disaster, an operator is disposed on each of the left and right side switches, Since it is necessary to manually release the hydraulic push-up type brakes of the weight lowering device of the switchgear, securing necessary personnel in an emergency and their cooperation are problematic. Furthermore, in the sluice gate opening and closing device according to the prior art 2, one operator can lower the weight of the door by operating one of the switches, but the descent speed is lower than when operating the switches on both sides. Therefore, when it is necessary to close the sluice gate immediately in case of an emergency or disaster such as a tsunami, the gate closing operation may be delayed.

  Furthermore, in the sluice gate opening and closing device according to the prior art 2, both ends of the wire rope are hooked on the pair of wire rope take-up drums, and there is no rope end portion that can directly detect the rope tension of the wire rope. When a load / rope slack detection device is provided, there is a problem that the structure of the switch becomes complicated. In addition, since the rope end of the wire rope becomes a wire rope take-up drum, the end of the wire rope should be attached to the hook portion of the wire rope take-up drum when performing minute length adjustments such as by extending the wire rope. There is also a problem that it is necessary to remove the wire rope and adjust the end of the wire rope by pulling it with a jack or the like.

  The present invention has been made in view of the problems of the sluice gate opening and closing device according to Patent Document 1, Prior Art 1 and Prior Art 2 as described above. An object of the present invention is to provide a sluice gate opening / closing device including an operation interlocking mechanism that operates a self-weight lowering device in conjunction, a wire rope overload / sagging detection device, and a wire rope rope length adjustment device.

  And in order to solve the subject mentioned above, the invention which concerns on the sluice gate opening and closing device of Claim 1 raises and lowers a door body with a pair of opening and closing devices provided with a self-weight drop device and an electric motor and a wire rope winding drum. A sluice gate opening and closing device for opening and closing a sluice gate, characterized in that an operation interlocking mechanism is provided between a pair of opening and closing devices to operate one of the opening and closing devices to operate the own weight lowering device of the other opening and closing device. .

  In order to solve the above-mentioned problem, the invention according to claim 2 is the invention according to claim 1, wherein the pair of wire ropes for raising and lowering the door body is a wire rope winding of one of the opening / closing devices. The other end of one wire rope that hooked one end to the take-up drum is hooked to the wire rope take-up drum of the other opening / closing machine via one pulley installed on the sluice facility and the door body, The other end of the other wire rope hooked to the other end of the wire rope take-up drum of the other opening / closing machine passes through the other pulley installed in the sluice facility and the door body, and then the wire rope take-up of one of the opening / closing machines. The operation interlocking mechanism, which is hooked on the drum, releases the rotation of one pulley rotated by the wire rope of one opening / closing machine, and releases the brake device that locks the own weight lowering device of the other opening / closing machine. Transmission to the control lever Characterized in that it comprises a pulley rotation transmitting device that.

  Furthermore, in order to solve the above-mentioned problem, the invention according to claim 3 is the invention according to claim 2, wherein the pulley rotation transmission device is wound between the pulley, the sprocket, and the pulley and the sprocket. The rotation of the pulley is transmitted to the operation lever through the chain.

  Furthermore, in order to solve the above-mentioned problem, the invention according to claim 4 is the invention according to claim 2 or 3, wherein the one pulley and the other pulley are rocked via a rocking frame. It is installed movably, and a wire rope overload / slack detector is connected to the swing frame.

  Furthermore, in order to solve the above-described problem, the invention according to claim 5 is the invention according to claim 4, wherein the overload / sagging device includes a wire rope rope length adjusting device. It is characterized by that.

  According to the invention relating to the sluice gate opening and closing device of claim 1, in the sluice gate opening and closing device that opens and closes the sluice gate by raising and lowering the door body with a pair of opening and closing devices including a self-weight drop device and an electric motor and a wire rope winding drum, An operation interlocking mechanism is provided between a pair of switches to operate one of the switches to activate the weight drop device of the other switch. The door body can be lowered by interlocking with its own weight lowering device. In addition, even when one of the control lines of the left and right switches breaks down when the weight of the door is lowered by a remote operation, the other switch is used using the control line of the other switch. The door body can be lowered by its own weight by interlocking the own weight lowering devices of the left and right switches.

  According to the invention relating to the sluice gate opening and closing device of claim 2, in addition to the effect of the invention of claim 1, one end of the pair of wire ropes for raising and lowering the door body is hung on the wire rope winding drum of one opening and closing machine. The other end of the one wire rope stopped is hooked to the wire rope take-up drum of the other opening / closing machine via one pulley installed on the sluice gate and the door body, and the other rope rope of the other opening / closing machine The other end of the other wire rope that is hooked on one end of the take-up drum is hooked on the wire rope take-up drum of one of the switchgears via the other pulley installed on the sluice gate and door. The interlock mechanism is a pulley rotation transmission device that transmits the rotation of one pulley rotated by the wire rope of one switch to the operation lever that releases the brake device that locks the weight drop device of the other switch. Configure to include By simply using the pulley rotation transmission device, the brake device that locks the weight lowering device of the left and right switchgears is mechanically released, and the door body is moved by interlocking the weight lowering device of the left and right switchgear. You can drop your own weight.

  According to the invention relating to the sluice opening and closing device of claim 3, in addition to the effect of the invention of claim 2, the pulley rotation transmission device is connected to the pulley, the sprocket, and the chain wound between the pulley and the sprocket, It is configured to transmit the rotation of the pulley to the control lever, and is mechanically configured at the time of operation and does not require the function of electrical products, so it can be operated safely in an emergency or disaster. Can be configured.

  According to the invention relating to the sluice opening and closing device of claim 4, in addition to the effect of the invention of claim 2 or 3, one pulley and the other pulley are installed so as to be able to swing through the swing frame, Since the wire rope overload / slack detector is connected to the frame, it is possible to easily install an overload / slack detector that directly detects the wire rope overload / slack.

  According to the invention relating to the sluice opening and closing device of claim 5, in addition to the effect of the invention of claim 4, the wire rope overload / slack detection device includes the wire rope rope length adjusting device. It is possible to easily perform a minute length adjustment by elongating or the like.

FIG. 1 is a diagram showing a sluice opening and closing device according to an embodiment of the present invention. FIG. 2 is a view showing a pulley rotation transmission device constituting an operation interlocking mechanism of the sluice opening and closing device according to the embodiment of the present invention. FIG. 3 is a diagram showing a wire rope overload / slack detecting device / rope length adjusting device of the sluice gate opening / closing device according to the embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, the same or corresponding components are denoted by the same reference numerals, and the description thereof is omitted as appropriate.
As shown in FIG. 1, a sluice gate opening / closing device 1 according to an embodiment of the present invention is a sluice gate opening / closing device 1 used for a sluice gate facility having a large span and a large load during opening / closing operation, and opens and closes a water channel. On the left and right gate pillars 2 that guide the door 3 so as to be movable up and down, an opening / closing machine 4 having an electric motor 5 and a wire rope winding drum 7 is installed. In the following description, since the structures of the left and right switches 4 installed on the left and right gate pillars 2 are similar, the description will focus on one switch 4 (the switch 4 shown on the left side in FIG. 1). To do.

As shown in FIG. 1, the opening / closing machine 4 has an electric motor 5, a self-weight drop device 6, a wire rope winding drum 7 that is rotationally driven by the electric motor 5, and one end hooked on the wire rope winding drum 7. A wire rope 8a. The other end of the wire rope 8a is hooked on the wire winding drum 7 of the other opening / closing machine 4.
Further, the electric motor 5 and the own weight lowering device 6 are connected to the wire rope take-up drum 7 via the electric / self weight lowering switching device 9, and the electric motor 5 is connected via the electric / self weight lowering switching device 9 during electric operation. The door rope 3 is connected to the wire rope take-up drum 7 and the door 3 is moved up and down by the wire rope 8a. At the time of the weight drop operation, the weight drop device 6 is connected to the wire rope take-up drum 7 through the electric / self weight drop switching device 9. The door 3 is lowered by its own weight by the wire rope 8a.

Further, a hydraulic push-up brake 10 is provided between the electric motor 5 and the electric / self-weight drop switching device 9, and a hydraulic push-up brake 11 is provided between the self-weight drop device 6 and the electric / self-weight drop switching device 9. During electric operation, the hydraulic push-up brake 10 is released by electric operation or manual operation, and the driving force of the electric motor 5 is transmitted to the wire rope take-up drum 7. Is released by an operation interlocking mechanism, which will be described later, and the rotational speed of the wire rope take-up drum 7 connected to the own weight lowering device 6 is adjusted, so that the door body 3 is lowered by its own weight at a predetermined lowering speed.
The self-weight drop device 6 includes a centrifugal brake or the like (not shown), and restricts the self-weight drop speed of the door body 3 to a predetermined drop speed when the door body 3 is lowered.

Moreover, as shown in FIG. 1, the wire ropes 8a and 8b which hooked one end to each wire rope winding drum 7 of a pair of opening / closing machines 4 are wired as follows.
First, one wire rope 8a having one end hooked to the wire rope take-up drum 7 of one opening / closing machine 4 is provided with one pulley 13a, 14a and 16a rotatably installed on the door body 3 and the other gate pillar 2 After being wound around pulleys 15 a installed in the other end, the other end is hooked on the wire rope winding drum 7 of the other opening / closing machine 4. The other wire rope 8b, which is hooked at one end to the wire rope take-up drum 7 of the other opening / closing machine 4, includes the other pulleys 13b, 14b, and 16b that are rotatably installed on the door body 3, and one gate pole 2 After being wound around the pulleys 15b installed in the other side, the other end is hooked on the wire rope take-up drum 7 of one opening / closing machine 4.

  Since the pair of wire ropes 8a and 8b are wired as described above, the pair of electric motors 5 is rotated forward or reverse to wind or unwind the pair of wire ropes 8a and 8b, thereby opening the door. The body 3 can be lifted and lowered along the pair of gate pillars 2 and 2 in an equilibrium state to open and close the water gate. In addition, by winding or rewinding one of the pair of wire ropes 8a and 8b, the door body 3 can be opened / closed at a normal half opening / closing speed.

Moreover, in the sluice gate opening / closing device 1 according to the embodiment of the present invention, when the weight of the door body 3 is lowered, the other opening / closing device 4 is mechanically interlocked to operate by operating one of the opening / closing devices 4. It has an operation interlocking mechanism that can
As shown in FIG. 2, the operation interlocking mechanism pushes up the rotation of one pulley 15 a rotated by the wire rope 8 a of one opening / closing machine 4, and hydraulically pushes up the own weight lowering device 6 of the other opening / closing machine 4. It includes a pulley rotation transmission device 20 for transmitting to a manual operation lever shaft 12 for releasing the brake 11.

  As shown in FIG. 2, the pulley rotation transmission device 20 includes a chain 21 wound between one pulley 15a and the sprocket 22, a transmission shaft 23 attached between the sprocket 22 and the sprocket 26, and a transmission shaft. 23, an electromagnetic clutch 24 and a torque limiter (over-rotation cutoff device) 25 interposed between the sprocket 26 and the manual operation lever shaft 12, and a chain 27 wound around the sprocket 26. The pulley rotation transmission device 20 provided in the opening / closing machine 4 of the sluice opening / closing device 1 according to the embodiment of the present invention uses a chain as the rotation motion transmission means, but the rotation motion of the pulley is used as a manual operation lever shaft. As long as transmission is possible, a gear, a flexible shaft, a wire, and the like can be used as appropriate.

  As shown in FIG. 2, the pulley rotation transmission device 20 rotates to the sprocket 22 via the chain 21 wound around the pulley 15a when one of the pulleys 15a rotates by moving one of the wire ropes 8a. The movement is transmitted, and the transmission shaft 23 is also rotated by the rotation of the sprocket 22. Further, the rotation of the transmission shaft 23 is transmitted from the sprocket 26 to the manual operation lever shaft 12 of the hydraulic push-up brake 11 via the chain 27, the manual operation lever shaft 12 is rotated, and the manual operation lever 28 is moved to the arrow. When it moves in this direction and comes into contact with the stopper 29, the brake of the hydraulic push-up brake 11 that locks the operation of the own weight lowering device 6 of the other opening / closing machine 4 is released.

  In addition, in the sluice gate opening / closing device 1 according to the embodiment of the present invention, the operation interlocking mechanism including the pulley rotation transmission device 20 is provided. However, the operation interlocking mechanism controls the left and right opening / closing switches 4 in synchronization. Will not work. That is, when the left and right opening / closing machines 4 are operated in synchronism, the wire ropes 8a and 8b, which are hooked at one end on the left and right wire rope winding drums 7, are synchronously wound or unwound, and therefore move up and down. The pulleys 13a, 13b, 14a, 14b, 16a and 16b installed on the door body 3 rotate as the wire ropes 8a and 8b move, but the pulleys 15a and 15b are fixed to the gate pillars 2 on both sides. Therefore, the wire ropes 8a and 8b do not move along the pulleys 15a and 15b. Therefore, the operation interlocking mechanism of the sluice opening and closing device 1 according to the embodiment of the present invention operates the interlocking mechanism of the own weight lowering device 6 of the other opening / closing device 4 when only one of the opening / closing devices 4 is operated to lower its own weight. However, it does not operate during normal sluice opening and closing operations.

  Further, the rotation of the pulley 15a continues until the door body 3 is landed even after the manual operation lever shaft 12 is rotated to the brake release side. Therefore, in order to cut off unnecessary rotation of the manually operated lever shaft 12 of the hydraulic push-up brake 11, the transmission shaft 23 is provided with an automatic return type mechanical torque limiter (over-rotation cut-off device) 25. The torque limiter 25 functions to block excessive torque generated in the transmission shaft 23 when the manual operation lever 28 is restrained from rotating by the stopper 29.

  Further, the electromagnetic clutch 24 interposed in the transmission shaft 23 is provided to prevent the operation of the pulley rotation transmission device 20 during the electric operation of the opening / closing machine 4. The rotation of the transmission shaft 23 is cut off so that the rotation of the transmission shaft 23 is not transmitted to the manual operation lever shaft 12 of the hydraulic push-up brake 11.

  The return of the manual operation lever 28 to the brake operating side is performed by manually moving the manual operation lever 28 to the brake operating position. In this case, even if the rotation of the transmission shaft 23 is restricted, the torque limiter 25 slips, so that the manual operation lever 28 can be easily returned to the brake operating side.

  As described above, the opening / closing device 4 of the sluice opening / closing device 1 according to the embodiment of the present invention includes the operation interlocking mechanism including the pulley rotation transmission device 20, so that one of the opening / closing devices 4 is operated during the operation of lowering its own weight. Then, the other opening / closing machine 4 can be operated mechanically in conjunction. Therefore, since the weight drop can be started using the left and right switches 4, it is possible to obtain a predetermined descent speed (twice as fast as one-side operation). In addition, it is not necessary to place an operator on each of the left and right switches 4 even when the weight is lowered during an emergency or disaster. It becomes possible to operate. Furthermore, even when one of the left and right switches 4 is disconnected when performing a weight reduction operation by remote operation, a normal weight reduction operation can be performed using the other control line. Therefore, the reliability of operation becomes high.

  As shown in FIG. 3, the sluice opening and closing device 1 according to the embodiment of the present invention further includes a wire rope overload / slack detection device / rope length adjustment device 30. The wire rope overload / slack detecting device / rope length adjusting device 30 is a pulley support base in which one end of a pulley swing frame 31 that pivotally supports a pulley 15a around which the wire rope 8a is wound is fixed to the gate column 2. The pulley swinging shaft 33 is pivotally supported by a pulley swinging shaft 33, and a pulley height adjusting rod 35 is connected to the other end of the pulley swinging frame 31. The pulley height adjusting rod 35 is supported by a base 34 fixed to the gate pillar 2. The base 34 is provided with a tension detection sensor (not shown) such as a limit switch, detects the tension acting on the wire rope 8a, and detects overload / loosening of the wire rope 8a.

  When the wire rope overload / slack is detected using the wire rope overload / slack detecting device / rope length adjusting device 30, one end of the pulley swing frame 31 that pivotally supports the pulley 15a is provided. Since the pulley swing frame 31 is pivotally supported by the pulley swing shaft 33 and the other end of the pulley swing frame 31 is connected to the pulley height adjusting rod 35, the wire acting on the pulley 15a by utilizing the lever principle. The tension of the rope 8a is detected by a tension detection sensor such as a limit switch through the pulley height adjusting rod 35.

  Further, the wire rope overload / slack detecting device / rope length adjusting device 30 can reduce the capacity of the overload / slack detecting device by changing lever ratios L1 and L2 of the insulator shown in FIG. It becomes possible. For example, when the lever ratios L1 and L2 of the lever are equal, the load of one wire rope 8a acts on the wire rope overload / slack detection device / rope length adjustment device 30.

  Further, when adjusting the length of the wire rope 8a using the wire rope overload / slack detecting device / rope length adjusting device 30, the screw of the pulley height adjusting rod 35 is adjusted with respect to the base 34. By changing the screwing length, the screwing length of the pulley height adjusting rod 35 with respect to the base 34 is changed to move the pulley rocking frame 31 up and down. Since the screwing length of the pulley height adjusting rod 35 can be adjusted with a screw, it is possible to appropriately cope with a slight elongation of the wire rope 8a. The adjustment amount of the wire rope 8a can be 2h, which is twice the height movement amount h of the pulley 15a.

  As shown in FIG. 1, one wire rope 8a has four pulleys 13a, 14a, 15a and 16a, and the other wire rope 8b has four other pulleys 13b, 14b, 15b and 16b are respectively hooked, and the wire rope overload / slack detecting device / rope length adjusting device 30 is usually a pulley 15a or a pulley 15b associated with the pulley rotation transmission device 20 installed in the sluice 2. It may be attached to other pulleys 13a, 14a, 16a, 13b, 14b or 16b installed on the door body 3.

  Although this invention demonstrated the case where it applies to a sluice gate opening and closing apparatus, if it is an apparatus provided with the actuator which has an electric motor, a several wire rope, and a wire rope winding drum, it can apply suitably to such an apparatus. it can.

DESCRIPTION OF SYMBOLS 1 Water gate opening / closing device 2 Gate pillar 3 Door body 4 Opening / closing machine 5 Electric motor 6 Self-weight drop device 7 Wire rope winding drum 8a, 8b Wire rope 9 Electricity / self-weight drop switching device 10, 11 Hydraulic push-up brake 12 Manual operation lever shaft 13a, 13b, 14a, 14b, 15a, 15b, 16a, 16b Pulley 20 Pulley rotation transmission device 21, 27 Chain 22, 26 Sprocket 23 Transmission shaft 24 Electromagnetic clutch 25 Torque limiter (over-rotation cutoff device)
28 Manual Operation Lever 29 Stopper 30 Wire Rope Overload / Looseness Detection Device (Rope Length Adjustment Device)
31 pulley swing frame 32 pulley support base 33 pulley swing shaft 34 base 35 pulley height adjustment rod

Claims (5)

A sluice gate opening and closing device that opens and closes a sluice gate by raising and lowering a door body by a pair of opening and closing devices including a self-weight lowering device and an electric motor and a wire rope winding drum,
A sluice gate opening and closing device characterized in that an operation interlocking mechanism is provided between a pair of opening and closing devices to operate one of the opening and closing devices to operate the own weight lowering device of the other opening and closing device. The pair of wire ropes for raising and lowering the door body are hooked at one end to the wire rope take-up drum of one opening / closing machine, and the other end of the one wire rope is routed through a sluice facility and one pulley installed on the door body. The other end of the other wire rope hooked to the wire rope take-up drum of the other switch and the other end of the wire rope take-up drum of the other switch It is hooked to the wire rope take-up drum of one open / close machine via the other pulley installed in
The operation interlocking mechanism transmits the rotation of one pulley rotated by the wire rope of one switch to the operation lever that opens the brake device that locks the weight drop device of the other switch. The sluice gate opening and closing device according to claim 1, comprising a device.   The sluice opening and closing according to claim 2, wherein the pulley rotation transmission device transmits rotation of the pulley to the operation lever via a pulley, a sprocket, and a chain wound between the pulley and the sprocket. apparatus.   4. The one pulley and the other pulley are swingably installed via a swing frame, and a wire rope overload / slack detector is connected to the swing frame. The sluice gate opening and closing device described in 1.   The sluice gate opening and closing device according to claim 4, wherein the overload / sagging detection device includes a rope length adjusting device for a wire rope.

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