Windproof zipper device of crane and working method of windproof zipper device

Abstract

The invention belongs to the technical field of cranes, and particularly relates to a windproof zipper device of a crane and a working method of the windproof zipper device of the crane. The driving mechanism is arranged in the extension rod and comprises a driver and a multi-connecting-rod assembly, the multi-connecting-rod assembly is hinged to the extension rod through a rotating shaft, and a driving shaft of the driver is connected with the two ear pulling hooks through the multi-connecting-rod assembly so as to drive the two ear pulling hooks to be opened and closed; according to the crane windproof zipper device and the working method thereof, in the opening process of the two pull lug hooks, air injection cleaning and lubricating oil coating are conducted on the interior of the lubricating groove through the linkage mechanism, so that it is guaranteed that the pull lug hooks are closed and used smoothly; meanwhile, the two pull lug hooks are only closed under the condition of strong wind, and lubricating oil in the lubricating groove is easily polluted by impurities, so that in the closing process of the two pull lug hooks, the lubricating oil in the lubricating groove is sucked through the linkage mechanism, and the lubricating oil is prevented from being polluted.

Description

Technical Field

[0001] The invention belongs to the technical field of cranes, and specifically relates to a tower crane, and in particular to a crane windproof zipper device and a working method thereof. Background Art

[0002] The windproof zipper system is when the crane encounters a high wind alarm and the crane is moved to the windproof zipper and anchor point, the safety operator operates the zipper or anchor point button to automatically zip and anchor.

[0003] In the related art, a windproof zipper generally includes two pull ear hooks, which are opened and closed by a multi-link assembly, wherein the multi-link assembly is hinged by a rotating shaft, and a lubrication groove for applying lubricating oil is provided on the rotating shaft to ensure lubrication of the rotating shaft.

[0004] However, the ear hook is used when encountering strong winds, and its usage time is short throughout the year, and it is not used most of the time, so lubricating oil needs to be stored when not in use to prevent the shaft from drying out and rusting; and when in use, due to the strong wind conditions, the external environment has a lot of rain, high wind speed, and more debris in the wind, which can easily contaminate the lubricating oil in the lubrication groove and affect the subsequent use of the shaft.

[0005] Therefore, how to solve the technical problem that the lubricating oil in the ear hook is easily contaminated is urgently needed to be solved by those skilled in the art.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The disclosed embodiments at least provide a crane windproof zipper device and a working method thereof.

[0008] In the first aspect, the embodiment of the present disclosure provides a windproof zipper device for a crane, which includes: an extension rod; a driving mechanism, which is arranged in the extension rod and includes: a driver and a multi-link assembly, the multi-link assembly is hinged to the extension rod through a rotating shaft, and the driving shaft of the driver is connected to two pull ear hooks through the multi-link assembly to drive the two pull ear hooks to open and close; and a linkage mechanism, which is linked with the driving shaft; wherein during the opening process of the two pull ear hooks, the breathing chamber inside the linkage mechanism is pressurized and first sprays air into the lubrication groove of the rotating shaft for cleaning through the guide pipe, and then lubricating oil is applied to the cleaned lubrication groove; and during the closing process of the two pull ear hooks, the breathing chamber inside the linkage mechanism expands with negative pressure, so as to first absorb the lubricating oil in the lubrication groove through the guide pipe, then receive the gas in the air replenishment chamber, and finally absorb the lubricating oil in the oil replenishment chamber through the catheter.

[0009] In an optional embodiment, the linkage mechanism includes: an oiling tank body, in which a first lifting plate and a second lifting plate are arranged in sequence from top to bottom, so as to separate the oiling tank body from top to bottom in sequence to form the oil replenishing chamber, the air replenishing chamber and the breathing chamber; a linkage shaft group, which is located in the air replenishing chamber, and its two ends are respectively connected to the first lifting plate and the second lifting plate; a transmission rod, one end of which is connected to the driving shaft, and the other end is connected to the second lifting plate; wherein during the opening process of the two-pull ear hooks, the transmission rod drives the second lifting plate to descend through the driving shaft, so that the breathing chamber is pressurized to spray air to the lubrication groove for cleaning and then apply lubricating oil, and at the same time, the air replenishing chamber is negatively pressurized to inhale air; and during the closing process of the two-pull ear hooks, the transmission rod drives the second lifting plate to rise through the driving shaft, so that the breathing chamber negatively pressure absorbs the lubricating oil in the lubrication groove, and at the same time, the air replenishing chamber is pressurized to replenish air to the breathing chamber, and when the linkage shaft group is pressurized to a threshold value, it drives the first lifting plate to rise so that the oil replenishing chamber replenishes lubricating oil to the breathing chamber.

[0010] In an optional embodiment, the linkage shaft group includes: a first linkage shaft and a second linkage shaft; wherein one end of the second linkage shaft is connected to the upper end surface of the second lifting plate, one end of the first linkage shaft is connected to the lower surface of the first lifting plate, and the other end of the first linkage shaft is located in the second linkage shaft; in the process of closing the two-pull ear hooks, the second linkage shaft first follows the second lifting plate to rise, and when it rises to a threshold, it pushes the first lifting plate to make the first lifting plate rise synchronously; in the process of opening the two-pull ear hooks, the second linkage shaft first follows the second lifting plate to descend, and when it descends to the threshold, it pulls the first linkage shaft to make the first lifting plate descend synchronously.

[0011] In an optional embodiment, a slideway is provided at the axis center of the second linkage shaft; the lower end portion of the first linkage shaft extends into the slideway, and the lower end portion is limited to prevent it from falling off.

[0012] In an optional embodiment, a sponge for absorbing and filtering lubricating oil is provided in the breathing chamber.

[0013] In an optional embodiment, the guide pipe is a three-way pipe, and includes: a first pipe opening and a second pipe opening connected to the breathing chamber, and a third pipe opening extending to the lubrication groove; a pressure valve is arranged in the first pipe opening, a first one-way valve is arranged in the second pipe opening, and a trigger rod is arranged on the lower surface of the second lifting plate; during the opening process of the two ear hooks, the breathing chamber is pressurized to open the second pipe opening to spray, and the trigger rod blocks the second pipe opening when following the second lifting plate to descend to a threshold value, so that the first pipe opening is pressurized to open and apply lubricating oil.

[0014] In an optional embodiment, an exhaust hole is provided on the second lifting plate, and a second one-way valve is provided in the exhaust hole.

[0015] In an optional embodiment, an air inlet hole is opened on the side wall of the air replenishing chamber, and a third one-way valve is arranged in the air inlet hole.

[0016] In an optional embodiment, a baffle is provided on the lower surface of the second lifting plate; during the closing process of the two pull ear hooks, the baffle first blocks the outlet of the conduit until the first lifting plate rises synchronously with the second lifting plate and then opens the outlet of the conduit to replenish the lubricating oil.

[0017] In a second aspect, the disclosed embodiment also provides a working method for a crane windproof zipper device, comprising: controlling the crane to open to an anchoring point; controlling the driver of the crane windproof zipper device to drive two pull ear hooks to gradually close to approach a dock support; wherein when the torque of the driver increases to 100% of the rated value, it stops, i.e., the fastening is completed; when the driving current of the driver increases to 150%, a warning is issued, i.e., the fastening fails; controlling the driver of the crane windproof zipper device to drive the two pull ear hooks to gradually open to disengage from the dock support; wherein when the driving current of the driver is greater than 2 times, it stops, i.e., the unfastening fails; when power is cut off during the fastening or unfastening process, the position data of the two pull ear hooks before the power is cut off is memorized by a memory module.

[0018] The beneficial effect of the present invention is that, during the opening process of the two pull ear hooks, the windproof zipper device of the crane first jets and cleans the lubrication groove through the linkage mechanism, and then applies lubricating oil to the cleaned lubrication groove to ensure smooth closing and use of the pull ear hooks; at the same time, because the two pull ear hooks can only be closed under strong wind conditions, and under strong wind conditions, the lubricating oil in the lubrication groove is easily contaminated by impurities, thereby affecting subsequent use, so during the closing process of the two pull ear hooks, the lubricating oil in the lubrication groove is absorbed through the linkage mechanism to prevent the lubricating oil from being contaminated.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a windproof zipper device for a crane provided in an embodiment of the present disclosure; Figure 2 A schematic diagram of the structure of a rotating shaft provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of the structure of a linkage mechanism provided by an embodiment of the present disclosure when it is in an initial state of the first stage; Figure 4 A schematic diagram of the structure of a linkage mechanism provided by an embodiment of the present disclosure when it is in an initial state of the second stage; Figure 5 A schematic diagram of the structure of a linkage mechanism provided by an embodiment of the present disclosure when it is in an initial state of the third stage; Figure 6 A schematic diagram of the structure of a linkage mechanism provided by an embodiment of the present disclosure when it is in an initial state of the fourth stage; Figure 7 A schematic diagram of the structure of a breathing chamber provided by an embodiment of the present disclosure when absorbing lubricating oil in a lubricating groove; Figure 8 A schematic diagram of the structure of a breathing chamber receiving gas in a gas supplement chamber provided by an embodiment of the present disclosure; Fig. 9 A schematic diagram of the structure of a breathing chamber provided in an embodiment of the present disclosure when absorbing lubricating oil in an oil replenishing chamber.

[0023] In the figure: Extension rod 1; Driving mechanism 2, driver 21, driving shaft 211, multi-link assembly 22, rotating shaft 23, lubrication groove 231; Pull the ear hook 3; Linkage mechanism 4, oil tank body 40, oil replenishment chamber 401, air replenishment chamber 402, breathing chamber 403, sponge 404, catheter 405, first lifting plate 41, second lifting plate 42, trigger rod 421, exhaust hole 422, linkage shaft group 43, first linkage shaft 431, second linkage shaft 432, slide 433, transmission rod 44, guide tube 45, first pipe opening 451, second pipe opening 452, third pipe opening 453. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, in the drawings, the thickness of the components may be exaggerated or reduced in order to effectively describe the technical content.

[0026] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] like Figure 1 , Figure 2 As shown, at least one embodiment provides a windproof zipper device for a crane, which includes: an extension rod 1; a driving mechanism 2, which is arranged in the extension rod 1 and includes: a driver 21 and a multi-link assembly 22, the multi-link assembly 22 is hinged to the extension rod 1 through a rotating shaft 23, and the driving shaft 211 of the driver 21 is connected to the two pull ear hooks 3 through the multi-link assembly 22 to drive the two pull ear hooks 3 to open and close; and a linkage mechanism 4, which is linked with the driving shaft 211; wherein during the opening process of the two pull ear hooks 3, the breathing chamber 403 inside the linkage mechanism 4 is pressurized and first sprays air into the lubrication groove 231 of the rotating shaft 23 through the guide pipe 45 for cleaning, and then lubricating oil is applied to the cleaned lubrication groove 231; and during the closing process of the two pull ear hooks 3, the breathing chamber 403 inside the linkage mechanism 4 expands negative pressure, so as to first absorb the lubricating oil in the lubrication groove 231 through the guide pipe 45, then receive the gas in the air replenishment chamber 402, and finally absorb the lubricating oil in the oil replenishment chamber 401 through the conduit 405.

[0028] In this embodiment, the crane is connected to an extension rod 1 via a cable, and two pulling ear hooks 3 are provided on the extension rod 1; when a high wind alarm is sounded, the crane is opened to the anchor point and the cable is unwound to lower the extension rod 1, thereby driving the two pulling ear hooks 3 to approach the support pin shaft on the dock, and then the driving shaft 211 of the driver 21 retreats to drive the two pulling ear hooks 3 to close to clamp the support pin shaft, thereby fixing the crane and preventing the crane from being forced to rotate in high winds; optionally, the driver 21 uses a servo electric push rod.

[0029] In some embodiments, the multi-link assembly 22 can be but is not limited to a four-link assembly, and is hinged to the extension rod 1 through a rotating shaft 23; since the two pull ear hooks 3 are in an open state most of the time and are only closed in strong winds, in order to ensure smooth closing and use, this embodiment has a lubrication groove 231 axially opened on the side wall of the rotating shaft 23, so that during the opening process of the two pull ear hooks 3, the lubrication groove 231 is first jet-cleaned through the linkage mechanism 4, and then the cleaned lubrication groove 231 is coated with lubricating oil; at the same time, since the two pull ear hooks 3 are only closed in strong winds, and in strong winds, the lubricating oil in the lubrication groove 231 is easily contaminated by impurities, thereby affecting subsequent use, so during the closing process of the two pull ear hooks 3, this embodiment absorbs the lubricating oil in the lubrication groove 231 through the linkage mechanism 4 to prevent the lubricating oil from being contaminated.

[0030] like Figures 3 to 6 As shown, in some embodiments, the linkage mechanism 4 includes: an oil coating tank body 40, in which a first lifting plate 41 and a second lifting plate 42 are arranged in sequence from top to bottom, so as to separate the oil coating tank body 40 from top to bottom into an oil replenishing chamber 401, an air replenishing chamber 402 and a breathing chamber 403; a linkage shaft group 43, located in the air replenishing chamber 402, and its two ends are respectively connected to the first lifting plate 41 and the second lifting plate 42; a transmission rod 44, one end of which is connected to the drive shaft 211, and the other end is connected to the second lifting plate 42.

[0031] Specifically, the working process of the linkage mechanism 4 is divided into four stages: Phase 1: Figure 3 , Figure 4 As shown, during the opening process of the two-pull ear hooks 3, the transmission rod 44 drives the second lifting plate 42 to descend to squeeze the breathing chamber 403, so that the breathing chamber 403 first sprays air to clean the lubrication groove 231, and then applies lubricating oil to the lubrication groove 231. At the same time, the descent of the second lifting plate 42 causes the air replenishing chamber 402 to inhale air under negative pressure; wherein, the first lifting plate 41 does not descend due to friction resistance.

[0032] The second stage: Figure 4 , Figure 5 As shown, during the opening process of the two-pull ear hook 3, when the second lifting plate 42 drops to the threshold, the first lifting plate 41 is pulled down synchronously through the linkage shaft group 43.

[0033] The third stage: Figure 5 , Figure 6 As shown, during the closing process of the two ear hooks 3, the transmission rod 44 drives the second lifting plate 42 to rise to make the breathing chamber 403 negatively pressurized. At this time, the negative pressure of the breathing chamber 403 absorbs the gas in the air replenishing chamber 402, and at the same time, the negative pressure absorbs the lubricating oil in the lubrication groove 231; wherein, the first lifting plate 41 does not rise due to friction resistance.

[0034] Stage 4: Figure 6 , Figure 3 As shown, during the closing process of the two ear hooks 3, when the second lifting plate 42 rises to the threshold, the first lifting plate 41 is pushed to rise synchronously through the linkage shaft group 43. At this time, the lubricating oil in the oil replenishing chamber 401 is raised in liquid level due to the rise of the first lifting plate 41, and at the same time, the negative pressure of the breathing chamber 403 absorbs the lubricating oil in the oil replenishing chamber 401.

[0035] It can be known from the above four stages that the linkage mechanism 4 realizes cleaning, coating and absorbing of the lubricating groove 231 through the lifting and lowering cooperation between the first lifting plate 41 and the second lifting plate 42 .

[0036] like Figure 4 As shown, in some embodiments, the linkage shaft group 43 includes: a first linkage shaft 431 and a second linkage shaft 432; wherein one end of the second linkage shaft 432 is connected to the upper end surface of the second lifting plate 42, one end of the first linkage shaft 431 is connected to the lower surface of the first lifting plate 41, and the other end of the first linkage shaft 431 is located inside the second linkage shaft 432.

[0037] In this embodiment, during the closing process of the two ear hooks 3, the second linkage shaft 432 first rises along with the second lifting plate 42, and when the second lifting plate 42 rises to the threshold value (refer to Figure 6 : The first linkage shaft 431 and the second linkage shaft 432 are close to the minimum distance), the second linkage shaft 432 pushes the first lifting plate 41, so that the first lifting plate 41 rises synchronously; during the opening process of the two-pull ear hook 3, the second linkage shaft 432 first follows the second lifting plate 42 to descend, and when it descends to the threshold value (reference Figure 4 : the first linkage shaft 431 and the second linkage shaft 432 move away from each other to a maximum distance), the second linkage shaft 432 pulls the first linkage shaft 431 to make the first lifting plate 41 descend synchronously.

[0038] In some embodiments, a slideway 433 is provided at the axis of the second linkage shaft 432 ; the lower end of the first linkage shaft 431 extends into the slideway 433 , and the lower end is limited to prevent it from falling off.

[0039] In this embodiment, an annular protrusion is provided at the end of the first linkage shaft 431 located in the slideway 433 , and the annular protrusion is limited in the slideway 433 and cannot be separated.

[0040] like Figure 3 As shown, in some embodiments, a sponge 404 for absorbing and filtering lubricating oil is disposed in the breathing chamber 403 .

[0041] In this embodiment, during the closing process of the two ear hooks 3, the lubricating oil in the lubrication groove 231 sucked by the negative pressure of the breathing chamber 403 will be filtered by the sponge 404, and the impurities therein will be adsorbed by the sponge 404; at the same time, the lubricating oil sucked by the negative pressure and the replenished lubricating oil are both stored in the sponge 404.

[0042] like Figure 1 As shown, in some embodiments, the breathing chamber 403 is connected to a guide tube 45, which is a three-way tube and includes: a first pipe opening 451 and a second pipe opening 452 connected to the breathing chamber 403, and a third pipe opening 453 extending to the lubrication groove 231; a pressure valve is arranged in the first pipe opening 451, a first one-way valve is arranged in the second pipe opening 452, and a trigger rod 421 is arranged on the lower surface of the second lifting plate 42.

[0043] In this embodiment, the breathing chamber 403 has two outlets, which are respectively connected to the first pipe port 451 and the second pipe port 452, wherein the first pipe port 451 is used for the inlet and outlet of lubricating oil, and the second pipe port 452 is used for exhausting air; Figure 3 , Figure 4 During the opening process of the two-pull ear hook 3, the pressure in the breathing chamber 403 gradually increases. Since the force of opening the first one-way valve is less than the force of opening the pressure valve, the second pipe port 452 will be opened first to spray cleaning air to the lubrication groove 231. When the second lifting plate 42 drops to the threshold (that is, the second linkage shaft 432 is about to pull the first linkage shaft 431 down), the trigger rod 421 blocks the second pipe port 452 and stops exhausting air; as the pressure in the breathing chamber 403 gradually increases to open the pressure valve in the first pipe port 451, the second lifting plate 42 squeezes the sponge 404, causing the lubricating oil to spray out from the first pipe port 451.

[0044] like Figure 6 As shown, in some embodiments, the second lifting plate 42 is provided with an exhaust hole 422 , in which a second one-way valve is disposed; the side wall of the air replenishing chamber 402 is provided with an air inlet hole 404 , in which a third one-way valve is disposed.

[0045] In this embodiment, the second one-way valve can only allow the gas in the air replenishing chamber 402 to enter the breathing chamber 403 , and the third one-way valve in the air inlet 404 can only allow the external gas to enter the air replenishing chamber 402 .

[0046] In some embodiments, the oil replenishment chamber 401 is connected to the breathing chamber 403 via a conduit 405 .

[0047] In some embodiments, a baffle 423 is provided on the lower surface of the second lifting plate 42; during the closing process of the two pull ear hooks 3, the baffle 423 first blocks the outlet of the conduit 405 until the first lifting plate 41 rises synchronously with the second lifting plate 42 and opens the outlet of the conduit 405 to replenish the lubricating oil.

[0048] In this embodiment, the pressure valve in the first pipe port 451 is a two-way valve, which can be opened when the pressure or negative pressure reaches a certain value, and the force required to open the pressure valve in the first pipe port 451 is less than the force required to open the second one-way valve in the exhaust hole 422; during the closing process of the two-pull ear hook 3, the second lifting plate 42 gradually rises to make the breathing chamber 403 negative pressure, and when the second lifting plate 42 rises to the first height (refer to Figure 7 ), the pressure in the breathing chamber 403 opens the pressure valve in the first pipe port 451, and the lubricating oil in the lubricating groove 231 is sucked by negative pressure until the second lifting plate 42 rises to the second height; when the second lifting plate 42 rises to the second height (refer to Figure 8 ), the gas in the air replenishing chamber 402 is pressurized to open the second one-way valve in the exhaust hole 422, and the air replenishing chamber 402 is replenished into the breathing chamber 403, so that the pressure in the breathing chamber 403 is increased to close the pressure valve in the first pipe port 451 until the second lifting plate 42 rises to the third height; when the second lifting plate 42 rises to the third height (refer to Fig. 9 ), the second lifting plate 42 pushes the first lifting plate 41 to rise synchronously, at which time the second one-way valve in the exhaust hole 422 is closed, the first one-way valve in the second pipe port 452 is closed, and the baffle 423 opens the conduit 405, and then the negative pressure in the breathing chamber 403 absorbs the lubricating oil in the oil replenishing chamber 401.

[0049] At least one embodiment also provides a working method of a crane windproof zipper device, which includes: controlling the crane to open to the anchoring point; controlling the driver 21 of the crane windproof zipper device to drive the two pull ear hooks 3 to gradually close to approach the dock support; wherein when the torque of the driver 21 increases to 100% of the rated value, it stops, that is, the fastening is completed; when the driving current of the driver 21 increases to 150%, a warning is issued, that is, the fastening fails; controlling the driver 21 of the crane windproof zipper device to drive the two pull ear hooks 3 to gradually open to disengage from the dock support; wherein when the driving current of the driver 21 is greater than 2 times, it stops, that is, the unfastening fails; when power is cut off during the fastening or unfastening process, the position data of the two pull ear hooks 3 before power off is memorized by the memory module.

[0050] Specifically, after the crane encounters a high wind alarm, after the crane is driven to the windproof zipper and anchor point, the safety operator operates the zipper or anchor point button for automatic zipping and automatic anchoring; after the crane is driven to the accurate position, the crane sends a signal, and the operation screen displays that the crane is in the anchor zipper position, the trolley operation stops (interlocking), and the crane switches from the working condition to the anchor zipper condition; among them, the range of adaptable position deviation is: trolley left and right deviation + / -50; height deviation + / -6; vertical track deviation + / -25.

[0051] Application scenario 1: During the securing process, the safety operator presses the "Secure" button on the zipper, and the operation screen displays "Secure in progress". At this time, the servo electric push rod moves inward from "0 speed to rated speed until the two pull ear hooks 3 approach the dock support, and the speed is reduced to 50%.

[0052] Among them, after the pull ear hook leaves the dock support pin shaft by 10mm, the speed is reduced to 15% until both hook bodies touch the pin shaft, the feedback motor torque increases to the rated 100%, and then stops, reporting that the fastening is completed, and sending a fastening signal to the crane at the same time.

[0053] Among them, the ear hook is blocked and cannot enter normally, and the motor current increases. If the current increases to 150%, the screen will issue a warning and indicate that the fastening has failed.

[0054] Application scenario 2: During the unfastening process, the safety operator presses the "unfastening" button of the zipper, and the screen displays "unfastening in progress". The servo electric push rod in the zipper system moves out, from "0 speed to 15% rated speed until the pull ear hook is disengaged from the dock support.

[0055] If the motor current is more than 2 times, the extension action stops and the screen issues a "Warning, unfastening failed, reset, refasten and then unfasten."

[0056] If the current is normal, the speed increases to 100%, then decelerates and stops before the end point until the hook reaches the normal end point, reporting that the unfastening is complete. At the same time, a signal for unfastening is sent to the crane, automatically returning to the crane working condition, and the trolley can run (interlocking).

[0057] Application scenario three: The crane is not in the correct position, but the safety operator does not know. The safety operator presses the "secure" button of the zipper, and the screen displays "secure in progress". The servo electric push rod in the zipper system retracts from "0 speed to rated speed until the ear hook approaches the dock support, and the speed is reduced to 50%.

[0058] Among them, the pull hook is blocked and cannot hook the dock support pin (a section of the hook body will hold the pin), and the motor current increases. If the current increases to 150%, the screen will issue a warning and display the failure of fastening. Then the electric cylinder extends to return the zipper to its original position when the crane is working. The warning of fastening failure is always displayed.

[0059] Application scenario 4: During the process of fastening or unfastening, there is a sudden power outage. The windproof zipper system has a memory function and knows the position of the hook before the power outage. It displays the position of fastening or unfastening on the screen with a graphic. After the power is turned on, the safety operator continues to press the fastening or unfastening button to continue the previous action until it is completed.

[0060] Regarding the specific structure and implementation process of the crane windproof zipper device, please refer to the relevant discussion in the above embodiments, which will not be repeated here.

[0061] To sum up, during the opening process of the two pull ear hooks 3 of the crane windproof zipper device, the lubrication groove 231 is first jet-cleaned through the linkage mechanism 4, and then the lubrication groove 231 that has been cleaned is coated with lubricating oil to ensure that the pull ear hooks 3 are smoothly closed and used; at the same time, since the two pull ear hooks 3 are only closed under strong wind conditions, and under strong wind conditions, the lubricating oil in the lubrication groove 231 is easily contaminated by impurities, thereby affecting subsequent use, so during the closing process of the two pull ear hooks 3, the lubricating oil in the lubrication groove 231 is absorbed through the linkage mechanism 4 to prevent the lubricating oil from being contaminated.

[0062] Herein, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or a third component may be interposed between the first component and the second component.

[0063] In this article, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to another element or layer, or there may be intermediate elements or layers. In contrast, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intermediate elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0064] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0065] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0066] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0067] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0068] In the above discussion, unless otherwise stated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0069] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A windproof zipper device for a crane, characterized in that: include: Extension rod (1); A driving mechanism (2) is arranged in the extension rod (1) and comprises: a driver (21) and a multi-link assembly (22), wherein the multi-link assembly (22) is hinged to the extension rod (1) via a rotating shaft (23), and a driving shaft (211) of the driver (21) is connected to the two pull ear hooks (3) via the multi-link assembly (22) to drive the two pull ear hooks (3) to open and close; and A linkage mechanism (4) linked to the drive shaft (211); in During the opening process of the two-pull ear hook (3), the breathing chamber (403) inside the linkage mechanism (4) is pressurized and jets of air are firstly sprayed into the lubrication groove (231) of the rotating shaft (23) for cleaning through the guide pipe (45), and then lubricating oil is applied to the cleaned lubrication groove (231); and During the closing process of the two ear hooks (3), the breathing chamber (403) inside the linkage mechanism (4) expands with negative pressure, so as to first absorb the lubricating oil in the lubricating groove (231) through the guide tube (45), then receive the gas in the air replenishing chamber (402), and finally absorb the lubricating oil in the oil replenishing chamber (401) through the guide tube (405).

2. The crane windproof zipper device according to claim 1, characterized in that: The linkage mechanism (4) comprises: An oil coating tank body (40) in which a first lifting plate (41) and a second lifting plate (42) are sequentially arranged from top to bottom, so as to sequentially separate the oil coating tank body (40) from top to bottom into the oil replenishing chamber (401), the air replenishing chamber (402) and the breathing chamber (403); The linkage shaft group (43) is located in the air replenishing chamber (402), and its two ends are respectively connected to the first lifting plate (41) and the second lifting plate (42); A transmission rod (44) has one end connected to the drive shaft (211) and the other end connected to the second lifting plate (42); wherein During the opening process of the two-pull ear hook (3), the transmission rod (44) drives the second lifting plate (42) to descend via the driving shaft (211), so that the breathing chamber (403) is pressurized to spray air toward the lubrication groove (231) for cleaning and then coating with lubricating oil, while the air replenishing chamber (402) inhales air under negative pressure; and During the closing process of the two ear hooks (3), the transmission rod (44) drives the second lifting plate (42) to rise via the driving shaft (211), so that the negative pressure of the breathing chamber (403) absorbs the lubricating oil in the lubricating groove (231), and at the same time, the air replenishing chamber (402) is pressurized to replenish air to the breathing chamber (403), and when the linkage shaft group (43) is pressurized to a threshold value, it drives the first lifting plate (41) to rise so that the oil replenishing chamber (401) replenishes the lubricating oil to the breathing chamber (403).

3. The crane windproof zipper device according to claim 2, characterized in that: The linkage shaft group (43) comprises: a first linkage shaft (431) and a second linkage shaft (432); wherein One end of the second linkage shaft (432) is connected to the upper end surface of the second lifting plate (42), one end of the first linkage shaft (431) is connected to the lower surface of the first lifting plate (41), and the other end of the first linkage shaft (431) is located inside the second linkage shaft (432); During the closing process of the two pull ear hooks (3), the second linkage shaft (432) first rises along with the second lifting plate (42), and when it rises to a threshold value, it pushes the first lifting plate (41) so that the first lifting plate (41) rises synchronously; During the opening process of the two-pull ear hooks (3), the second linkage shaft (432) first descends following the second lifting plate (42), and when descending to a threshold value, pulls the first linkage shaft (431) to cause the first lifting plate (41) to descend synchronously.

4. The crane windproof zipper device according to claim 3, characterized in that: A slideway (433) is provided at the axis center of the second linkage shaft (432); The lower end of the first linkage shaft (431) extends into the slideway (433), and the lower end is limited to prevent it from falling off.

5. The crane windproof zipper device according to claim 4, characterized in that: A sponge (404) for absorbing and filtering lubricating oil is arranged in the breathing chamber (403).

6. The crane windproof zipper device according to claim 5, characterized in that: The guide pipe (45) is a three-way pipe, and comprises: a first pipe opening (451) and a second pipe opening (452) which are connected to the breathing chamber (403), and a third pipe opening (453) which extends to the lubrication groove (231); A pressure valve is provided in the first pipe opening (451), a first one-way valve is provided in the second pipe opening (452), and a trigger rod (421) is provided on the lower surface of the second lifting plate (42); During the opening process of the two-pull ear hook (3), the breathing chamber (403) is pressurized to open the second pipe opening (452) to eject air, and the trigger rod (421) blocks the second pipe opening (452) when following the second lifting plate (42) to descend to a threshold value, so that the first pipe opening (451) is pressurized to open and apply lubricating oil.

7. The crane windproof zipper device according to claim 6, characterized in that: The second lifting plate (42) is provided with an exhaust hole (422), and a second one-way valve is arranged in the exhaust hole (422).

8. The crane windproof zipper device according to claim 7, characterized in that: An air inlet hole (404) is provided on the side wall of the air replenishment chamber (402), and a third one-way valve is arranged in the air inlet hole (404).

9. The crane windproof zipper device according to claim 8, characterized in that: A baffle (423) is provided on the lower surface of the second lifting plate (42); During the closing process of the two pull ear hooks (3), the baffle (423) first blocks the outlet of the conduit (405) until the first lifting plate (41) rises synchronously with the second lifting plate (42), and then opens the outlet of the conduit (405) to replenish lubricating oil.

10. A working method using the crane windproof zipper device according to any one of claims 1 to 9, characterized in that: include: Control the crane to the anchor point; By controlling the driver (21) of the crane windproof zipper device, the two pull ear hooks (3) are driven to gradually close to approach the dock support; in When the torque of the driver (21) increases to 100% of the rated value, it stops, and the fastening is completed; When the driving current of the driver (21) increases to 150%, a warning is issued, indicating that the securing has failed; By controlling the driver (21) of the crane windproof zipper device, the two pull ear hooks (3) are driven to gradually open to disengage from the dock support; When the driving current of the driver (21) is greater than 2 times, it stops, i.e., the debonding fails; When power is cut off during the process of fastening or unfastening, the position data of the two pull ear hooks (3) before the power is cut off are memorized through the memory module.

Images