Sudden stop device of water gate winch type hoist
By introducing left and right L-shaped crank arms, anti-loosening pulleys, anti-loosening counterweights, and extra-high hammer blocks into the sluice gate winch, and combining them with an emergency stop control module, the problem of emergency stop when the gate travel exceeds the limit is solved, ensuring the safe operation of the winch.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 上海市浦东新区水闸管理事务中心
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-05
AI Technical Summary
Existing sluice gate hoists cannot stop in time when the gate travel position exceeds the limit, leading to accidents. In particular, when the travel limit device fails, the gate may overshoot or the wire rope may be too loose, resulting in abnormal lifting or hooking.
The system employs left and right L-shaped crank arms, anti-loosening pulleys, anti-loosening counterweight components, over-height hammer components, and an emergency stop control module. When the gate's travel position is too high or the wire rope is too loose, the emergency stop control module is triggered to send a signal to the control system, thereby stopping the gate's operation.
It enables timely emergency stop when the gate travel exceeds the limit, avoiding accidents and ensuring the safe operation of the hoist-controlled vertical flat steel gate.
Smart Images
Figure CN224199864U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sluice gate hoisting technology, and in particular to an emergency stop device for a sluice gate winch-type hoisting machine. Background Technology
[0002] A sluice gate winch is a specialized device for controlling the opening and closing of vertical flat steel gates, primarily used to control water level and flow. Existing sluice gate winches are typically equipped with travel limit devices to control the maximum and minimum opening degree of the gate, as well as the gate being fully open (gate locked).
[0003] If the existing travel limit device malfunctions during the opening or closing of the gate, and the gate rises above the upper limit position without stopping the hoist, an overshoot accident will occur. If the gate falls below the lower limit position or the gate locking device cannot be completely released, and the hoist does not stop, the wire rope will become too loose and twist back, causing the gate to be re-lifted or the wire rope to break after abnormally hooking onto the frame, resulting in an accident.
[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide an emergency stop device for a sluice gate winch-type hoist, which addresses the shortcomings of the existing technology. When the gate travel position is detected to be too high or the wire rope is too loose, the device controls the gate to stop suddenly, ensuring the safe operation of the winch-type hoist controlling the vertical flat steel gate.
[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution:
[0007] An emergency stop device for a sluice gate winch-type hoist includes:
[0008] Symmetrically arranged left and right L-shaped crank arms, one end of which is hinged to the top balance pulley of the gate hoisting machine, and the other end is connected by a connecting crossbar.
[0009] An anti-loosening pulley is located between the left and right L-shaped crank arms, at the corner of the left and right L-shaped crank arms, and supported on the wire rope of the gate hoisting machine.
[0010] Anti-loosening counterweight assembly suspended on the connecting crossbar;
[0011] The sliding assembly of the ultra-high hammer block is mounted on the wire rope; and
[0012] An emergency stop control module is fixedly installed between the left and right L-shaped crank arms, connected to the ultra-high hammer block assembly, and connected to the control system of the gate hoisting hoist.
[0013] When the gate rises to the fully open position and exceeds the maximum operating limit, the ultra-high hammer block assembly is lifted by the moving pulley block of the gate hoist and triggers the emergency stop control module to generate an emergency stop signal to the control system of the gate hoist, so that the gate stops rising.
[0014] When the gate descends to the fully closed position and exceeds the minimum operating limit, or when the gate locking device cannot be completely released, causing the wire rope to become too loose, the anti-loosening counterweight assembly drives the left and right L-shaped crank arms to rotate around their hinge points, and triggers the emergency stop control module to generate an emergency stop signal, which is sent to the control system of the gate hoist, so that the gate stops descending.
[0015] In a preferred embodiment of this utility model, the emergency stop control module includes:
[0016] An outer sleeve, wherein upper and lower end caps are detachably installed at the upper and lower ends of the outer sleeve;
[0017] A cylindrical base that is fixedly mounted on the lower end cap of the outer sleeve and passes through the lower end cap;
[0018] An inner sleeve disposed on the cylindrical base and located inside the outer sleeve;
[0019] A push rod is slidably fitted inside the cylindrical base. The upper end of the push rod extends out of the upper end of the cylindrical base, and the lower end extends out of the lower end of the cylindrical base and is connected to the ultra-high hammer block assembly via a steel wire cable.
[0020] A spring is fitted onto the outer circumferential surface of the cylindrical base and located within the inner sleeve. The upper end of the spring abuts against the upper end of the push rod, and its lower end abuts against the cylindrical base.
[0021] A movable sleeve is disposed on the upper end of the push rod, located inside the inner sleeve, and arranged coaxially with the inner sleeve.
[0022] At least one steel ball placed inside the moving sleeve; and
[0023] A micro-switch is installed inside the outer sleeve, near the upper end of the inner sleeve, and connected to the control system of the gate hoist.
[0024] In a preferred embodiment of this invention, there are two steel balls.
[0025] In a preferred embodiment of this utility model, an annular limiting protrusion is formed in the middle of the cylindrical base, and an external thread is formed on the outer cylindrical surface of the portion of the cylindrical base located outside the lower end cover. During installation, the cylindrical base is inserted from the upper end of the outer sleeve and the lower half of the cylindrical base passes through the through hole opened in the lower end cover, so that the annular limiting protrusion of the cylindrical base abuts against the inner side of the lower end cover, and then the fastening nut is screwed into the external thread of the cylindrical base to tighten it.
[0026] In a preferred embodiment of this utility model, the upper and lower end caps are installed on the upper and lower ends of the outer sleeve by means of threads.
[0027] In a preferred embodiment of this utility model, the anti-loosening counterweight assembly includes:
[0028] A boom, the upper end of which has a hanging ring, is suspended from the connecting crossbar via the hanging ring;
[0029] Several anti-loosening counterweights are stacked and fitted onto the boom; and
[0030] An end nut screwed onto the lower end of the boom.
[0031] In a preferred embodiment of this utility model, the ultra-high hammer block assembly includes:
[0032] The sliding set of the high-strength hammer block on the wire rope; and
[0033] A sliding sleeve is fitted onto the wire rope and connected to the high-altitude hammer block. The high-altitude hammer block connecting plate is connected to the emergency stop control module via a wire cable.
[0034] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: when the gate rises to the fully open position and exceeds the maximum operating limit, or when the gate falls to the fully closed position and exceeds the minimum operating limit, or when the gate locking device cannot be completely released, causing the wire rope to be too loose, this utility model will generate an emergency stop signal to send to the control system of the gate hoisting hoist, control the gate to stop opening and closing, avoid accidents, and ensure the safe operation of the hoisting hoist controlling the vertical flat steel gate. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a three-dimensional structural schematic diagram of the emergency stop device of the sluice gate winch type hoist of this utility model from one perspective.
[0037] Figure 2 This is a three-dimensional structural schematic diagram of the emergency stop device of the sluice gate winch type hoist of this utility model from another perspective.
[0038] Figure 3 This is the front view of the emergency stop device for the sluice gate winch type gate opener of this utility model.
[0039] Figure 4 This is a structural schematic diagram of the emergency stop control module of this utility model.
[0040] Figure 5 yes Figure 4 A sectional view along the AA direction.
[0041] Figure 6 This is a circuit diagram of the control system of the gate hoist type gate opener of this utility model. Detailed Implementation
[0042] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.
[0043] See Figures 1 to 3 The figure shows an emergency stop device for a sluice gate winch, including left and right L-shaped crank arms 100a and 100b, anti-loosening pulley 200, anti-loosening counterweight assembly 300, high-pressure hammer assembly 400, and emergency stop control module 500.
[0044] The left and right L-shaped crank arms 100a and 100b are symmetrically arranged on both sides of the top balance pulley 10 of the gate hoisting machine. One end of each arm is hinged to the top balance pulley 10 of the gate hoisting machine, and the other end is connected by a connecting crossbar 110.
[0045] The anti-loosening pulley 200 is mounted between the left and right L-shaped crank arms 100a and 100b via the pulley shaft 210 and is located at the corner of the left and right L-shaped crank arms 100a and 100b and supported on the wire rope 20 of the gate hoisting machine.
[0046] The anti-loosening counterweight assembly 300 is suspended on the connecting crossbar 110. Specifically, the anti-loosening counterweight assembly 300 includes a lifting rod 310, a plurality of anti-loosening counterweights 320, and an end nut 330. A hanging ring 311 is formed at the upper end of the lifting rod 310, and the lifting rod 310 is suspended on the connecting crossbar 110 via the hanging ring 311. The plurality of anti-loosening counterweights 320 are stacked on the lifting rod 310, each anti-loosening counterweight 320 weighing 2 kg. The weight of the anti-loosening counterweight assembly 300 can be adjusted by adjusting the number of anti-loosening counterweights 320 to meet different counterweight requirements. The end nut 330 is screwed onto the lower end of the lifting rod 310 to limit the movement of the plurality of anti-loosening counterweights 320.
[0047] When the wire rope 20 is taut, the left and right L-shaped crank arms 100a and 100b will not rotate around their hinge points because the anti-loosening pulley 200 cooperates with the taut wire rope 20. When the wire rope 20 is too slack, the anti-loosening pulley 200 will shift to a certain extent because it cooperates with the slack wire rope 20. Under the gravity of the anti-loosening counterweight assembly 300, the left and right L-shaped crank arms 100a and 100b will rotate around their hinge points.
[0048] The high-altitude hammer block assembly 400 is slidably mounted on the wire rope 20. Specifically, the high-altitude hammer block assembly 400 includes a high-altitude hammer block 410 and a high-altitude hammer block connecting plate 420. The high-altitude hammer block 410 is slidably mounted on the wire rope 20, and the high-altitude hammer block connecting plate 420 is slidably mounted on the wire rope 20 and connected to the high-altitude hammer block 410. The high-altitude hammer block connecting plate 420 is connected to the emergency stop control module 500 via a wire cable 430.
[0049] See Figure 4 and Figure 5 and combined Figures 1 to 3 The emergency stop control module 500 is fixedly installed between the left and right L-shaped crank arms 100a and 100b and connected to the high-lift hammer block assembly 400 and the control system of the gate hoist. Specifically, the emergency stop control module 500 includes an outer sleeve 510, a cylindrical base 520, an inner sleeve 530, a push rod 540, a spring 550, a moving sleeve 560, two steel balls 570, and a micro limit switch 580.
[0050] The upper and lower ends of the outer sleeve 510 are detachably fitted with upper and lower end caps 511 and 512. The upper and lower end caps 511 and 512 can be installed on the upper and lower ends of the outer sleeve 510 by means of threads, which is convenient for disassembly.
[0051] The cylindrical base 520 is fixedly mounted on the lower end cover of the outer sleeve 510 and passes through the lower end cover 512. Specifically, an annular limiting protrusion 521 is formed in the middle of the cylindrical base 520, and an external thread 522 is formed on the outer cylindrical surface of the portion of the cylindrical base 520 located outside the lower end cover 512. During installation, the cylindrical base 520 is inserted from the upper end of the outer sleeve 510 and the lower half of the cylindrical base 520 passes through the through hole in the lower end cover 512, so that the annular limiting protrusion 521 of the cylindrical base 520 abuts against the inner side of the lower end cover 512. Then, the fastening nut 523 is screwed into the external thread 522 of the cylindrical base 520 and tightened, thereby fixing the cylindrical base 520 to the lower end cover 512.
[0052] The inner sleeve 530 is disposed on the cylindrical base 520 and located inside the outer sleeve 510 and arranged coaxially with the outer sleeve 510. Specifically, the lower end of the inner sleeve 530 is fitted onto the outer circumferential surface of the annular limiting protrusion 521 of the cylindrical base 520.
[0053] The push rod 540 is slidably fitted inside the cylindrical base 520, with its upper end extending out of the upper end of the cylindrical base 520 and its lower end extending out of the lower end of the cylindrical base 520, and is connected to the ultra-high hammer block connecting plate 420 of the ultra-high hammer block assembly 400 via a steel wire cable 430.
[0054] Spring 550 is fitted on the outer circumferential surface of cylindrical base 520 and located inside inner sleeve 530. Its upper end abuts against the annular limiting protrusion 541 formed by the upper end of push rod 540, and its lower end abuts against the annular limiting protrusion 521 of cylindrical base 520. Because push rod 540 is pulled by ultra-high hammer block assembly 400, spring 550 is in a compressed state.
[0055] The movable sleeve 560 is located on the upper end of the push rod 540 and inside the inner sleeve 530 and is coaxially arranged with the inner sleeve 530. It can move with the push rod 540.
[0056] Two steel balls 570 are placed inside the movable sleeve 560. The diameter of the steel balls 570 is slightly smaller than the inner diameter of the movable sleeve 560, and the two steel balls 570 are arranged in a stacked manner. In this embodiment, two steel balls 570 are used, which increases the rolling kinetic energy of the steel balls 570 and ensures that the steel balls 570 can trigger the micro-switch 580 when the angle of the movable sleeve 560 changes. Of course, the number of steel balls 570 is not limited to that in this embodiment, and should be determined according to the triggering requirements.
[0057] The micro limit switch 580 is located inside the outer sleeve 510 and near the upper end of the inner sleeve 530, and is connected to the control system of the gate hoist. When the steel ball 570 rolls along the moving sleeve 560 to the upper end of the inner sleeve 530, it triggers the micro limit switch 580 to generate an emergency stop signal and transmits it to the control system of the gate hoist.
[0058] The working principle of the emergency stop device for the sluice gate winch-type gate opener of this utility model is as follows:
[0059] 1. When the gate is fully open, if the travel limit device malfunctions or is damaged, and the actual position of the gate exceeds the maximum operating limit, the high-lift hammer block assembly 400 is lifted by the moving pulley block of the gate hoist. At this time, the wire cable 430 no longer pulls the push rod 540, and the spring 550 pushes the push rod 540 to move towards the micro-motion travel switch 580, which in turn drives the driving sleeve 560 to move towards the micro-motion travel switch 580 and triggers the micro-motion travel switch 580 to generate an emergency stop signal, which is transmitted to the control system of the gate hoist, causing the main circuit breaker to open and the gate to stop rising.
[0060] 2. When the gate is disengaged and descends, if the gate locking device is not completely released and the gate is not supported, the steel wire rope 20 will become too loose (when a single steel wire rope is too loose by more than 120mm). Under the gravity of the anti-loosening counterweight assembly 300, the general left and right L-shaped crank arms 100a and 100b will rotate with their hinge points as fulcrums. The steel ball 570 in the moving sleeve 560 will change angle and roll in the direction of the micro-motion limit switch 580, triggering the micro-motion limit switch 580 to generate an emergency stop signal, which will be transmitted to the control system of the gate hoist, causing the main circuit breaker to open and the gate to stop descending.
[0061] 3. When the gate is fully closed, if the travel limit device malfunctions or is damaged, and the actual position of the gate exceeds the minimum operating limit, the wire rope 20 will become too loose. Under the gravity of the anti-loosening counterweight assembly 300, the universal left and right L-shaped crank arms 100a and 100b will rotate with their hinge points as fulcrums. The steel ball 570 in the moving sleeve 560 will change angle and roll in the direction of the micro-motion travel switch 580, triggering the micro-motion travel switch 580 to generate an emergency stop signal, which will be transmitted to the control system of the gate hoist, causing the main circuit breaker to trip and the gate to stop descending.
[0062] See Figure 6 The normally open contact of the micro limit switch 580 and the normally closed contact of the manual changeover switch (which can release the electrical signal generated by the device when the equipment is under maintenance or the device malfunctions) are connected in series and then in parallel to the emergency stop and over-limit protection control circuit. When the micro limit switch 580 generates an emergency stop signal, the coil (GV (AS385)) is energized, the main circuit breaker (GV-M32) trips, and the gate stops.
[0063] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An emergency stop device for a sluice gate winch-type hoist, characterized in that, include: Symmetrically arranged left and right L-shaped crank arms, one end of which is hinged to the top balance pulley of the gate hoisting machine, and the other end is connected by a connecting crossbar. An anti-loosening pulley is located between the left and right L-shaped crank arms, at the corner of the left and right L-shaped crank arms, and supported on the wire rope of the gate hoisting machine. Anti-loosening counterweight assembly suspended on the connecting crossbar; The sliding assembly of the ultra-high hammer block is mounted on the wire rope; and An emergency stop control module is fixedly installed between the left and right L-shaped crank arms, connected to the ultra-high hammer block assembly, and connected to the control system of the gate hoisting hoist. When the gate rises to the fully open position and exceeds the maximum operating limit, the ultra-high hammer block assembly is lifted by the moving pulley block of the gate hoist and triggers the emergency stop control module to generate an emergency stop signal to the control system of the gate hoist, so that the gate stops rising. When the gate descends to the fully closed position and exceeds the minimum operating limit, or when the gate locking device cannot be completely released, causing the wire rope to become too loose, the anti-loosening counterweight assembly drives the left and right L-shaped crank arms to rotate around their hinge points, and triggers the emergency stop control module to generate an emergency stop signal, which is sent to the control system of the gate hoist, so that the gate stops descending.
2. The emergency stop device for a sluice gate winch-type hoist as described in claim 1, characterized in that, The emergency stop control module includes: An outer sleeve, wherein upper and lower end caps are detachably installed at the upper and lower ends of the outer sleeve; A cylindrical base that is fixedly mounted on the lower end cap of the outer sleeve and passes through the lower end cap; An inner sleeve disposed on the cylindrical base and located inside the outer sleeve; A push rod is slidably fitted inside the cylindrical base. The upper end of the push rod extends out of the upper end of the cylindrical base, and the lower end extends out of the lower end of the cylindrical base and is connected to the ultra-high hammer block assembly via a steel wire cable. A spring is fitted onto the outer circumferential surface of the cylindrical base and located within the inner sleeve. The upper end of the spring abuts against the upper end of the push rod, and its lower end abuts against the cylindrical base. A movable sleeve is disposed on the upper end of the push rod, located inside the inner sleeve, and arranged coaxially with the inner sleeve. At least one steel ball placed inside the moving sleeve; and A micro-switch is installed inside the outer sleeve, near the upper end of the inner sleeve, and connected to the control system of the gate hoist.
3. The emergency stop device for a sluice gate winch-type hoist as described in claim 2, characterized in that, There are two steel balls.
4. The emergency stop device for a sluice gate winch-type hoist as described in claim 2, characterized in that, The cylindrical base has an annular limiting protrusion in the middle, and the outer cylindrical surface of the portion of the cylindrical base located outside the lower end cover has an external thread. During installation, the cylindrical base is inserted from the upper end of the outer sleeve and the lower half of the cylindrical base passes through the through hole in the lower end cover, so that the annular limiting protrusion of the cylindrical base abuts against the inner side of the lower end cover. Then, the fastening nut is screwed into the external thread of the cylindrical base to tighten it.
5. The emergency stop device for a sluice gate winch-type hoist as described in claim 2, characterized in that, The upper and lower end caps are installed on the upper and lower ends of the outer sleeve by means of threads.
6. The emergency stop device for a sluice gate winch as described in claim 1, characterized in that, The anti-loosening counterweight assembly includes: A boom, the upper end of which has a hanging ring, is suspended from the connecting crossbar via the hanging ring; Several anti-loosening counterweights are stacked and fitted onto the boom; and An end nut screwed onto the lower end of the boom.
7. The emergency stop device for a sluice gate winch-type hoist as described in claim 1, characterized in that, The ultra-high hammer block assembly includes: The sliding set of the high-strength hammer block on the wire rope; and A sliding sleeve is fitted onto the wire rope and connected to the high-altitude hammer block. The high-altitude hammer block connecting plate is connected to the emergency stop control module via a wire cable.