Sudden stop device of water gate winch type hoist

Abstract

The invention discloses a sudden stop device for a gate winch type hoist, which comprises a left L-shaped crank arm and a right L-shaped crank arm which are symmetrically arranged, one ends of the left L-shaped crank arm and the right L-shaped crank arm are hinged on a top balance pulley of the gate winch type hoist, and the other ends of the left L-shaped crank arm and the right L-shaped crank arm are connected through a connecting cross rod; the anti-loose pulley is axially arranged between the left L-shaped crank arm and the right L-shaped crank arm, is positioned at the corner of the left L-shaped crank arm and the right L-shaped crank arm and is supported on a steel wire rope of the gate winch type hoist; the anti-loose balancing weight assembly is hung on the connecting cross rod; the ultrahigh hammer block assembly sleeves the steel wire rope in a sliding manner; and the emergency stop control module is fixedly arranged between the left L-shaped crank arm and the right L-shaped crank arm, is connected with the ultrahigh hammer block assembly and is connected with a control system of the gate winch type hoist. When the gate exceeds the normal stroke range in the ascending or descending opening and closing process, the emergency stop signal is generated and sent to a control system of the gate winch type hoist, the gate is controlled to stop opening and closing, accidents are avoided, and it is ensured that the winch type hoist controls the vertical lifting type plane steel gate to operate safely.

Description

Technical Field

[0001] The present invention relates to the technical field of sluice hoists, and in particular to an emergency stop device for a sluice winch hoist. Background Art

[0002] The sluice winch hoist is a special equipment for controlling the opening and closing of a vertical plane steel gate, mainly used for controlling the water level and the flow of water. The existing sluice winch hoists are usually equipped with a stroke limit device for controlling the maximum and minimum opening degrees of the gate and the full opening of the gate (gate locking).

[0003] If the existing stroke limit device fails during the opening or closing process of the gate, when the gate rises during opening and exceeds the upper limit position, the hoist will not stop and a top collision accident will occur; when the gate descends during closing and exceeds the lower limit position or cannot completely release the gate locking device, the hoist will not stop and the steel wire rope will be too loose and reverse-wound, the gate will be re-lifted or the steel wire rope will be abnormally hooked on the machine frame and then broken, resulting in an accident.

[0004] Therefore, through beneficial exploration and research, the applicant has found a method to solve the above problems, and the technical solution to be introduced below has been generated under this background. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide an emergency stop device for a sluice winch hoist in view of the deficiencies of the prior art, which can control the gate to stop urgently when it detects that the gate stroke position is too high or the steel wire rope is too loose, and ensure the safe operation of the winch hoist for controlling the vertical plane steel gate.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] An emergency stop device for a gate winch hoist, comprising:

[0008] Symmetrically arranged left and right L-shaped crank arms, one end of each of the left and right L-shaped crank arms is hinged to the top balance pulley of the sluice winch hoist, and the other end thereof is connected by a connecting cross bar;

[0009] A slack prevention pulley axially arranged between the left and right L-shaped crank arms, located at the corners of the left and right L-shaped crank arms and supported on the steel wire rope of the sluice winch hoist;

[0010] A slack prevention counterweight block assembly suspended on the connecting cross bar;

[0011] An ultra-high hammer block assembly slidably sleeved on the steel wire rope; and

[0012] An emergency stop control module fixedly arranged 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 machine;

[0013] When the gate rises to the fully open position and exceeds the highest operating limit, the ultra-high hammer block assembly is lifted by the moving pulley block of the gate hoisting machine, and triggers the emergency stop control module to generate an emergency stop signal and send it to the control system of the gate hoisting machine, so that the gate stops rising;

[0014] When the gate descends to the fully closed position and exceeds the lowest operating limit or when the gate locking device cannot be completely released and the wire rope becomes too loose, the anti-loose 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 and send it to the control system of the gate hoisting machine, so that the gate stops descending.

[0015] In a preferred embodiment of the present invention, the emergency stop control module includes:

[0016] An outer sleeve, with upper and lower end covers detachably installed at the upper and lower ends of the outer sleeve;

[0017] A cylindrical base fixedly arranged on the lower end cover of the outer sleeve and passing through the lower end cover;

[0018] An inner sleeve arranged on the cylindrical base and located inside the outer sleeve;

[0019] A push rod slidably sleeved inside the cylindrical base, with its upper end extending out of the upper end of the cylindrical base and its lower end extending out of the lower end of the cylindrical base and connected to the ultra-high hammer block assembly through a wire cable;

[0020] A spring sleeved on the outer peripheral surface of the cylindrical base and located inside the inner sleeve, with its upper end abutted against the upper end of the push rod and its lower end abutted against the cylindrical base;

[0021] A moving sleeve arranged on the upper end of the push rod and located inside the inner sleeve and coaxially arranged with the inner sleeve;

[0022] At least one steel ball placed inside the moving sleeve; and

[0023] A micro-travel switch arranged inside the outer sleeve and close to the upper end of the inner sleeve and connected to the control system of the gate hoisting machine.

[0024] In a preferred embodiment of the present invention, there are two steel balls.

[0025] In a preferred embodiment of the present invention, an annular limiting projection is formed in the middle of the cylindrical base, and an external thread is formed on the outer cylindrical surface of the part of the cylindrical base located outside the lower end cover; during installation, the cylindrical base is placed into 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 projection of the cylindrical base abuts against the inner side surface of the lower end cover, and then the fastening nut is screwed onto the external thread of the cylindrical base and tightened.

[0026] In a preferred embodiment of the present invention, the upper and lower end covers are installed at the upper and lower ends of the outer sleeve by means of threads.

[0027] In a preferred embodiment of the present invention, the anti-loosening counterweight assembly includes:

[0028] A suspension rod, a hanging ring is formed at the upper end of the suspension rod, and the suspension rod is hung on the connecting cross bar through the hanging ring;

[0029] A plurality of anti-loosening counterweight blocks sleeved on the suspension rod in a stacked manner; and

[0030] An end nut screwed on the lower end part of the suspension rod.

[0031] In a preferred embodiment of the present invention, the ultra-high hammer block assembly includes:

[0032] An ultra-high hammer block slidably sleeved on the steel wire rope; and

[0033] An ultra-high hammer block connecting plate slidably sleeved on the steel wire rope and connected to the ultra-high hammer block, and the ultra-high hammer block connecting plate is connected to the emergency stop control module through a steel wire cable.

[0034] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: when the gate rises to the fully open position and exceeds the highest operating limit, or when the gate descends to the fully closed position and exceeds the lowest operating limit, or when the gate locking device cannot be completely released and the steel wire rope becomes too loose, the present invention will generate an emergency stop signal and send it to the control system of the gate hoist, controlling the gate to stop opening and closing, avoiding accidents, and ensuring the safe operation of the hoist for controlling the vertical plane steel gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 It is a three-dimensional structure schematic diagram of a perspective of the emergency stop device of the gate hoisting machine of the present invention.

[0037] Figure 2 It is a three-dimensional structure schematic diagram of another perspective of the emergency stop device of the gate hoisting machine of the present invention.

[0038] Figure 3 It is the front view of the emergency stop device of the gate hoisting machine of the present invention.

[0039] Figure 4 It is a structure schematic diagram of the emergency stop control module of the present invention.

[0040] Figure 5 is Figure 4 the sectional view taken along the line A-A of

[0041] Figure 6 It is the circuit schematic diagram of the control system of the gate hoisting machine of the present invention. Specific embodiments

[0042] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below with reference to specific illustrations.

[0043] Refer to Figures 1 to 3 , what is shown in the figure is an emergency stop device for a gate hoisting machine, including left and right L-shaped crank arms 100a, 100b, a anti-loosening pulley 200, an anti-loosening counterweight block assembly 300, an ultra-high hammer block assembly 400, and an emergency stop control module 500.

[0044] The left and right L-shaped crank arms 100a, 100b are symmetrically arranged on both sides of the top balance pulley 10 of the gate hoisting machine. One end of each is hinged to the top balance pulley 10 of the gate hoisting machine, and the other ends are connected by a connecting cross bar 110.

[0045] The anti-loosening pulley 200 is axially arranged between the left and right L-shaped crank arms 100a, 100b through a pulley rotating shaft 210, is located at the corner of the left and right L-shaped crank arms 100a, 100b, and is supported on the steel wire rope 20 of the gate hoisting machine.

[0046] The anti-loosening counterweight assembly 300 is hung on the connecting cross bar 110. Specifically, the anti-loosening counterweight assembly 300 includes a suspension rod 310, a plurality of anti-loosening counterweights 320, and an end nut 330. A hanging loop 311 is formed at the upper end of the suspension rod 310, and the suspension rod 310 is hung on the connecting cross bar 110 through the hanging loop 311. A plurality of anti-loosening counterweights 320 are sleeved on the suspension rod 310 in a stacked manner. The weight of each anti-loosening counterweight 320 is 2 Kg, and 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 on the lower end of the suspension rod 310 and is used to limit the plurality of anti-loosening counterweights 320.

[0047] When the steel wire rope 20 is in a taut state, due to the cooperation of the anti-loosening pulley 200 and the taut steel wire rope 20, at this time, the left and right L-shaped arms 100a, 100b will not rotate around their hinge points; when the steel wire rope 20 is in an over-loose state, due to the cooperation of the anti-loosening pulley 200 and the over-loose steel wire rope 20, at this time, the anti-loosening pulley 200 has a certain offset, and under the action of the gravity of the anti-loosening counterweight assembly 300, the left and right L-shaped arms 100a, 100b rotate around their hinge points.

[0048] The ultra-high hammer block assembly 400 is slidably sleeved on the steel wire rope 20. Specifically, the ultra-high hammer block assembly 400 includes an ultra-high hammer block 410 and an ultra-high hammer block connecting plate 420. The ultra-high hammer block 410 is slidably sleeved on the steel wire rope 20, the ultra-high hammer block connecting plate 420 is slidably sleeved on the steel wire rope 20 and is connected to the ultra-high hammer block 410, and the ultra-high hammer block connecting plate 420 is connected to the emergency stop control module 500 through a steel wire cable 430.

[0049] See Figure 4 and Figure 5 and in combination with Figures 1 to 3 , the emergency stop control module 500 is fixedly arranged between the left and right L-shaped arms 100a, 100b, is connected to the ultra-high hammer block assembly 400, and is connected to the control system of the gate hoisting machine. 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-travel switch 580.

[0050] Upper and lower end covers 511, 512 are detachably installed on the upper and lower ends of the outer sleeve 510. The upper and lower end covers 511, 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 arranged on the lower end cover of the outer sleeve 510 and passes through the lower end cover 512. Specifically, a ring-shaped limiting projection 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 part of the cylindrical base 520 located outside the lower end cover 512. During installation, the cylindrical base 520 is placed into the upper end of the outer sleeve 510, and the lower half of the cylindrical base 520 passes through the through hole opened in the lower end cover 512, so that the ring-shaped limiting projection 521 of the cylindrical base 520 abuts against the inner side surface of the lower end cover 512. Then, the fastening nut 523 is screwed onto the external thread 522 of the cylindrical base 520 and tightened, thereby fixing the cylindrical base 520 on the lower end cover 512.

[0052] The inner sleeve 530 is arranged on the cylindrical base 520, located inside the outer sleeve 510 and coaxially arranged with the outer sleeve 510. Specifically, the lower end of the inner sleeve 530 is sleeved on the outer peripheral surface of the ring-shaped limiting projection 521 of the cylindrical base 520.

[0053] The push rod 540 is slidably sleeved inside the cylindrical base 520. Its upper end extends out of the upper end of the cylindrical base 520, and its lower end extends 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 through a wire cable 430.

[0054] The spring 550 is sleeved on the outer peripheral surface of the cylindrical base 520 and located inside the inner sleeve 530. Its upper end abuts against the ring-shaped limiting convex edge 541 formed at the upper end of the push rod 540, and its lower end abuts against the ring-shaped limiting projection 521 of the cylindrical base 520. Since the push rod 540 is pulled by the ultra-high hammer block assembly 400, the spring 550 is in a compressed state.

[0055] The moving sleeve 560 is arranged at the upper end of the push rod 540, located inside the inner sleeve 530 and coaxially arranged with the inner sleeve 530, and it can move along with the push rod 540.

[0056] Two steel balls 570 are placed inside the moving sleeve 560. The diameter of the steel balls 570 is slightly smaller than the inner diameter of the moving 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 microswitch 580 to act when the moving sleeve 560 undergoes an angular change. 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 microswitch 580 is arranged inside the outer sleeve 510, close to the upper end of the inner sleeve 530 and connected to the control system of the gate hoist. When the steel balls 570 roll along the moving sleeve 560 to the upper end of the inner sleeve 530, the microswitch 580 is triggered to generate an emergency stop signal and transmit it to the control system of the gate hoist.

[0058] The working principle of the gate winch type hoist emergency stop device of the present invention is as follows:

[0059] 1. When the gate is fully opened, if the travel limit device fails or is damaged, and the actual gate position exceeds the maximum operating limit, the super-high hammer block assembly 400 is lifted by the movable pulley assembly of the gate winch hoist. At this time, the wire rope 430 no longer pulls the push rod 540, and the spring 550 pushes the push rod 540 toward the micro-travel switch 580, which in turn drives the movable sleeve 560 to move toward the micro-travel switch 580 and triggers the micro-travel switch 580 to generate an emergency stop signal that is transmitted to the control system of the gate winch hoist, causing the main circuit breaker to open and the gate to stop rising;

[0060] 2. When the gate is released from the shelf and descends, if the shelf door locking device is not completely released to support the gate and the gate descends, causing the wire rope 20 to be too loose (when the single wire rope is too loose> 120mm), under the gravity of the anti-loosening counterweight assembly 300, the universal left and right L-shaped turning arms 100a, 100b rotate with their hinge points as fulcrums, and the steel ball 570 in the movable sleeve 560 changes its angle and rolls towards the micro travel switch 580, triggering the micro travel switch 580 to generate an emergency stop signal, which is transmitted to the control system of the gate winch 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 fails or is damaged, the actual position of the gate exceeds the minimum operating limit, causing the wire rope 20 to be too loose. Under the gravity of the anti-loosening counterweight assembly 300, the universal left and right L-shaped turning arms 100a and 100b rotate with their hinge points as fulcrums, and the steel ball 570 in the moving sleeve 560 is affected by the angle change and rolls toward the micro travel switch 580, triggering the micro travel switch 580 to generate an emergency stop signal that is transmitted to the control system of the gate winch hoist, causing the main circuit breaker to be opened and the gate to stop descending.

[0062] See also Figure 6 The normally open contacts of micro-switch 580 and the normally closed contacts of a manual selector switch (which removes the electrical signal during equipment maintenance or a device failure) are connected in series and then in parallel to the emergency stop and over-limit protection control circuit. When micro-switch 580 generates an emergency stop signal, the coil (GV (AS385)) is energized, opening the main circuit breaker (GV-M32) and stopping the gate.

[0063] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An emergency stop device for a hoist of a sluice gate, characterized in that, Comprising: Left and right L-shaped toggle arms symmetrically arranged, one end of the left and right L-shaped toggle arms is hinged on the top balance pulley of the gate hoist, and the other end is connected by a connecting cross bar; A loosening prevention pulley axially arranged between the left and right L-shaped toggle arms, located at the corner of the left and right L-shaped toggle arms and supported on the wire rope of the gate hoist; A loosening prevention counterweight assembly hung on the connecting cross bar; An ultra-high hammer block assembly slidably sleeved on the wire rope; and An emergency stop control module fixedly arranged between the left and right L-shaped toggle arms, connected to the ultra-high hammer block assembly and connected to the control system of the gate hoist; When the gate rises to the fully open position and exceeds the highest 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 and send it 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 lowest operating limit or when the wire rope is too loose due to the inability to completely release the gate locking device, the loosening prevention counterweight assembly drives the left and right L-shaped toggle arms to rotate around their hinge points, and triggers the emergency stop control module to generate an emergency stop signal and send it to the control system of the gate hoist, so that the gate stops descending.

2. The emergency stop device of the gate hoist as described in claim 1, characterized in that, The emergency stop control module includes: An outer sleeve, the upper and lower ends of the outer sleeve are detachably installed with upper and lower end covers; A cylindrical base fixedly arranged on the lower end cover of the outer sleeve and passing through the lower end cover; An inner sleeve arranged on the cylindrical base and located inside the outer sleeve; A push rod slidably sleeved in 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 through a wire cable; A spring sleeved on the outer peripheral surface of the cylindrical base and located inside the inner sleeve, the upper end of the spring abuts against the upper end of the push rod, and the lower end abuts against the cylindrical base; A moving sleeve arranged on the upper end of the push rod and located inside the inner sleeve and coaxially arranged with the inner sleeve; At least one steel ball placed in the moving sleeve; and A micro-travel switch arranged inside the outer sleeve and close to the upper end of the inner sleeve and connected to the control system of the gate hoist.

3. The emergency stop device for the gate hoisting machine according to claim 2, wherein, There are two steel balls.

4. The emergency stop device for the gate hoisting machine according to claim 2, wherein, A ring-shaped limit protrusion is formed in the middle of the cylindrical base, and an external thread is formed on the outer cylindrical surface of the part of the cylindrical base located outside the lower end cover; during installation, the cylindrical base is placed into 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 ring-shaped limit protrusion of the cylindrical base abuts against the inner side surface of the lower end cover, and then a fastening nut is screwed onto the external thread of the cylindrical base and tightened.

5. The emergency stop device of the gate hoisting machine according to claim 2, characterized in that, The upper and lower end covers are installed on the upper and lower ends of the outer sleeve by a threaded method.

6. The emergency stop device for the gate hoisting machine according to claim 1, characterized in that, The loosening prevention counterweight assembly includes: A suspension rod, a hanging ring is formed at the upper end of the suspension rod, and the suspension rod is hung on the connecting cross bar through the hanging ring; A plurality of loosening prevention counterweights sleeved on the suspension rod in a stacked manner; and An end nut rotatably provided at the lower end of the suspension rod.

7. The emergency stop device of the gate hoist as claimed in claim 1, characterized in that, The ultra-high hammer block assembly includes: An ultra-high hammer block slidably sleeved on the steel wire rope; and An ultra-high hammer block connecting plate slidably sleeved on the steel wire rope and connected to the ultra-high hammer block, and the ultra-high hammer block connecting plate is connected to the emergency stop control module through a wire cable.

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