CN113883189B - Anti-falling mechanism - Google Patents
Anti-falling mechanism Download PDFInfo
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- CN113883189B CN113883189B CN202111369847.3A CN202111369847A CN113883189B CN 113883189 B CN113883189 B CN 113883189B CN 202111369847 A CN202111369847 A CN 202111369847A CN 113883189 B CN113883189 B CN 113883189B
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- Prior art keywords
- claw
- gear
- connecting arm
- tooth surface
- shell
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
- F16D63/006—Positive locking brakes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The application discloses an anti-falling mechanism, which relates to the technical field of safety protection tools and comprises a shell, an external gear, an internal gear, a rotating shaft, a transmission gear and a first locking device; the external gear is provided with an inner tooth surface, and the internal gear is provided with an inner tooth surface and an outer tooth surface; the external gear is rotatably arranged on the shell; the inner gear is rotatably arranged in the inner tooth surface of the outer gear; the transmission gear is arranged between the external gear and the internal gear and is respectively meshed with the external tooth surface of the external gear and the internal tooth surface of the internal gear; the first locker comprises a connecting plate, a first claw and a first elastic piece; the first claw is rotatably arranged on the connecting plate, one end of the first claw is connected with the connecting plate through a first elastic piece, and the other end of the first claw is provided with a first hook part which can be in locking fit with the inner tooth surface of the internal gear; the rotating shaft is rotatably arranged on the shell and is synchronously and rotatably connected with the external gear and the connecting plate. The operation is convenient, and the device is applied to the rope/belt installation device, so that the working efficiency of personnel can be improved, and the safety is improved.
Description
Technical Field
The application relates to the technical field of safety protection tools, in particular to an anti-falling mechanism.
Background
In a high-altitude working scene, operators can adjust the length of the protection rope due to limitation of a channel, an obstacle or a working position. The safety rope/belt device on the market still has certain defects in the anti-falling design, cannot respond quickly when people fall down, is inconvenient to use and affects the working efficiency of the people.
Disclosure of Invention
In view of this, the purpose of this application is to provide a prevent weighing down mechanism, convenient operation is applied to installation rope/area device, can improve personnel work efficiency, improves the security.
In order to achieve the technical purpose, the application provides a falling prevention mechanism, which comprises a shell, an external gear, an internal gear, a rotating shaft, a transmission gear and a first locking device;
the external gear is provided with at least an inner tooth surface, and the inner gear is provided with an inner tooth surface and an outer tooth surface;
the external gear is rotatably arranged on the shell;
the inner gear is rotatably arranged in an inner tooth surface of the outer gear;
the transmission gear is arranged between the external gear and the internal gear and is respectively meshed with the external tooth surface of the external gear and the internal tooth surface of the internal gear;
the first locker comprises a connecting plate, a first claw and a first elastic piece;
the first claw is rotatably arranged on the connecting plate, one end of the first claw is connected with the connecting plate through the first elastic piece, and the other end of the first claw is provided with a first hook part which can be in locking fit with the inner tooth surface of the internal gear;
when the centrifugal force borne by the first claw is larger than the elastic force of the first elastic piece, the first claw swings until the first hook part is in locking fit with the inner tooth surface of the inner gear;
the rotating shaft is rotatably arranged on the shell and is in synchronous rotation connection with the external gear and the connecting plate.
Further, one end of the first elastic piece is rotatably connected with one end of the first claw, and the other end of the first elastic piece is rotatably connected with the connecting plate.
Further, the number of the first clamping claws is two, and the number of the first elastic pieces is one;
the device also comprises a connecting rod;
the two first clamping claws are symmetrically distributed around the rotation center line of the connecting plate;
one end of one of the first clamping claws is connected with the connecting plate through the first elastic piece;
one end of the other first claw is connected with one of the first claws through the connecting rod;
one end of the connecting rod is rotationally connected with one end of the other first claw, and the other point of the connecting rod is rotationally connected with the position, close to the first hook, of one of the first claws.
Further, the housing is provided with a first mounting cavity;
one end of the rotating shaft extends into the first mounting cavity;
the external gear, the internal gear and the connecting plate are sleeved on a shaft section of the rotating shaft extending into the first mounting cavity;
the external gear and the connecting plate are synchronously matched with the rotating shaft in a rotating way;
the internal gear is in relative rotation fit with the rotating shaft.
Further, the device also comprises a tripod;
the number of the transmission gears is three;
the three transmission gears are uniformly distributed around the circumference of the internal gear and are respectively rotatably arranged at the three corner ends of the tripod;
the tripod is fixedly connected with the shell.
Further, a second latch is also included;
the second locker is arranged on the shell and comprises a braking mechanism and a second hook part;
the second hook part can be in locking fit with an external tooth surface of the external gear;
the braking mechanism is connected with the second hook part and used for driving the second hook part to switch between a locking position and an unlocking position.
Further, the braking mechanism comprises a second claw, a second elastic piece and a fixed switch;
the second claw comprises a first connecting arm and a second connecting arm;
one end of the first connecting arm is connected with one end of the second connecting arm, and the first connecting arm and the second connecting arm are distributed at an angle;
the joint of the first connecting arm and the second connecting arm is rotationally connected with the shell;
the second hook part is arranged at the other end of the second connecting arm;
the second elastic piece is connected with the second claw and is used for providing a rotating torque force for rotating the second claw in the locking direction;
the fixed switch is arranged on the shell and can be used for limiting the rotation of the second claw when the second hook part moves to the unlocking position.
Further, the device also comprises a third claw and a third elastic piece;
the third claw further comprises a third connecting arm;
the third connecting arm is rotatably arranged on the shell;
the second hook part is also arranged at the tail end of the arm section positioned at one side of the rotation center of the third connecting arm;
the second clamping jaw is further provided with an extension arm at the rotation center;
the extension arm can contact and prop against an arm section positioned on the other side of the rotation center of the extension arm, and when the second claw rotates in the unlocking direction, the third claw is extruded, so that the third claw rotates in the unlocking direction;
the third elastic piece is connected with the third claw and is used for providing rotating torque force for rotating the third claw towards the locking direction.
Further, the second lock is mounted in the first mounting cavity;
a first protruding column is arranged on the first connecting arm close to the other end;
the shell is provided with a first limiting guide groove for the first protruding column to extend out.
Further, the fixed switch comprises a fixed block and a fourth elastic piece;
the fixed block is slidably arranged on the shell, and the sliding direction of the fixed block is perpendicular to the tangential direction of the center point of the swing track at the other end of the first connecting arm;
a first guide inclined plane is arranged at one end of the fixed block, which faces the second clamping jaw, and a stop surface in contact connection with the first guide inclined plane is arranged at one end of the fixed block, which faces the second clamping jaw;
when the second clamping jaw rotates in the unlocking direction, one end of the first connecting arm can contact with the first guide inclined plane and press the fixed block to move;
the stop surface is used for stopping the first connecting arm after the first connecting arm swings through the fixed block.
From the above technical solution, it can be seen that the anti-falling mechanism of the present application is designed to include a housing, an external gear, an internal gear, a transmission gear, and a first latch. The external gear is matched with the internal gear through the transmission gear, and the internal gear is driven to rotate in the opposite direction to the external gear through the transmission gear when the rotating shaft rotates. The first locking device is designed as a centrifugal locking device, and the first hook part can swing to the inner tooth surface of the inner gear until being locked and matched with the inner tooth surface of the inner gear when the centrifugal force applied to the first claw is larger than the elastic force of the first elastic piece. When the anti-falling mechanism is applied to a safety belt/rope device, the part of the shaft section of the shaft extending out of the shell can be used for winding and fixing the safety rope/rope, or synchronously rotating and connecting a winding wheel which is wound and fixed with the safety rope. When the operator drops, the pivot can drive outer gear and connecting plate together fast rotation, and the centrifugal force that first jack catch received is greater than the elastic force of first elastic component this moment, then can be toward the internal gear's internal tooth face expansion formula swing to drive first hook portion and be close to internal gear's internal tooth face motion, finally with internal gear's internal tooth face card end, thereby lock dead outer gear, play the anti-falling effect. This design of this application, external gear also drives the internal gear simultaneously and rotates when driving first locking ware and rotate, can realize the locking cooperation between internal gear and the first portion of colluding more fast like this, realizes more quick anti-falling response, further improves the security. And when the rotating shaft rotates at a normal speed, the centrifugal force received by the first claw is insufficient to overcome the acting force of the first elastic piece, and then the first locker cannot interfere the rotating shaft, so that the winding and the releasing of the safety belt body are facilitated, the use is convenient, the operation efficiency is improved, and the potential safety hazard is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of a first use state structure of a fall protection mechanism without a top cover provided in the present application;
FIG. 2 is a schematic view of a second use state of the fall protection mechanism without a top cover;
FIG. 3 is a schematic view of a third operational state of the fall protection mechanism without a top cover;
FIG. 4 is a schematic view of a part of a fall arrest mechanism provided in the present application;
FIG. 5 is a schematic view of the external gear structure of a fall arrest mechanism provided in the present application;
FIG. 6 is a schematic view of the internal gear structure of a fall arrest mechanism provided herein;
fig. 7 is a schematic diagram of a normal state of a first locking mechanism of the anti-falling mechanism provided in the present application;
fig. 8 is a schematic diagram of a locking state of a first locking mechanism of the anti-falling mechanism provided in the present application;
FIG. 9 is a schematic diagram of an unlocked state of a second latch of the fall arrest mechanism provided herein;
FIG. 10 is a schematic view of a second latch of the fall arrest mechanism provided in the present application;
FIG. 11 is a schematic illustration of an anti-crash mechanism provided herein;
in the figure: 1. a rotating shaft; 21. a housing; 211. a bottom case; 212. a top cover; 2121. the first limiting guide groove; 2122. the second limiting guide groove; 22. an external gear; 23. an internal gear; 24. a transmission gear; 25. a first latch; 251. a connecting plate; 252. a first claw; 2521. a first hook portion; 253. a first elastic member; 254. a connecting rod; 255. a screw; 26. a tripod; 3. a second latch; 30. a second hook portion; 31. a second claw; 311. a first connecting arm; 312. a second connecting arm; 3121. a first raised post; 3122. a first dial block; 313. an extension arm; 32. a second elastic member; 33. a fixed switch; 331. a fixed block; 3311. a first guiding inclined surface; 3312. a stop surface; 332. a fourth elastic member; 333. a second dial block; 34. a third jaw; 341. a third connecting arm; 35. and a third elastic member.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the embodiments of the present application, are within the scope of the embodiments of the present application.
In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
The embodiment of the application discloses a falling prevention mechanism.
Referring to fig. 1-6, one embodiment of a fall arrest mechanism provided in an embodiment of the present application includes:
the housing 21, the external gear 22, the internal gear 23, the rotary shaft 1, the transmission gear 24, and the first locker 25.
Wherein the outer gear 22 is provided with at least an inner tooth surface and the inner gear 23 is provided with an inner tooth surface as well as an outer tooth surface. The processing of the structure of the external gear 22 may be that a cylindrical concave cavity is formed on a side surface of a cylindrical structure body, and then a plurality of teeth are processed on an inner circumferential surface of the cylindrical concave cavity, so that an inner tooth surface is formed on the inner circumferential surface of the cylindrical concave cavity, and taking the external gear 22 also has an outer tooth surface as an example, then a plurality of gears can be correspondingly processed on the outer circumferential surface of the cylindrical structure body to form the outer tooth surface, and only the concave cavity is formed without forming a through cavity, so that a shaft hole can be conveniently formed at the bottom of the concave cavity, the rotary connection with the rotary shaft 1 is conveniently realized, and finally the external gear 22 structure as shown in fig. 6 can be formed. Based on the design concept of the external gear 22, the internal gear 23 may be designed to form the internal gear 23 structure as shown in fig. 7, and those skilled in the art may make appropriate changes based on this, without limitation. In addition, the internal gear 23, the external gear 22 and the transmission gear 24 in the present application can be made of metal materials, and have higher reliability and safety.
The external gear 22 is rotatably mounted on the housing 21, the internal gear 23 is rotatably disposed on the inner gear surface of the external gear 22, and the transmission gear 24 is disposed between the external gear 22 and the internal gear 23, and is engaged with the outer gear surface of the external gear 22 and the inner gear surface of the internal gear 23, respectively, so as to achieve the engagement of the external gear 22 and the internal gear 23.
As for the structural composition of the first latch 25, it specifically includes a connection plate 251, a first claw 252, and a first elastic member 253. The first claw 252 is rotatably mounted on the connection board 251, and the rotational mounting manner thereof can be realized by a screw 255, for example, a threaded hole is formed in the connection board 251, a communication hole is formed in a claw arm of the first claw 252, the screw 255 passes through the communication hole to be connected with the threaded hole in the connection board 251, so that the first claw 252 is fixed on the connection board 251, the head of the screw 255 can not be extruded to the first claw 252, and at this time, the first claw 252 can rotate on the screw 255, so that the first claw 252 is rotatably mounted on the connection board 251. The first jaw 252 may be integrally formed so that structural strength, stability in use, and safety are also improved.
One end of the first claw 252 is connected to the connecting plate 251 through a first elastic member 253, and the other end is provided with a first hook portion 2521 which can be engaged with the inner tooth surface of the internal gear 23. When the centrifugal force applied to the first claw 252 is greater than the elastic force of the first elastic member 253, the first claw 252 swings until the first hook portion 2521 is engaged with the inner tooth surface of the internal gear 23.
In this application, in order to make the first hook portion 2521 swing out better due to centrifugal force, the center of gravity of the first jaw 252 is biased toward the first hook portion 2521, for example, the distance from the rotation center of the first jaw 252 to the other end of the first jaw 252 is greater than the distance from one end of the first jaw 252, that is, the jaw arm segment biased toward the first hook portion 2521 is longer, and the rotation center divides the first jaw 252 into two jaw arm segments, that is, the center of gravity is disposed on the jaw arm segment with the first hook portion 2521. In order to facilitate connection and matching with the rotating shaft 1, the connecting plate 251 in the present application is also provided with a shaft hole, which is not particularly limited.
The rotating shaft 1 is rotatably disposed in the housing 21 and is rotatably connected to the external gear 22 and the connection plate 251.
When the anti-falling mechanism 300 of the design is applied to a safety belt/rope device, the shaft section part of the rotating shaft 1 extending out of the shell 21 can be used for winding and fixing the safety rope/rope, or synchronously rotating and connecting a winding wheel which is wound and fixed with the safety rope. When an operator drops, the rotating shaft 1 drives the external gear 22 to rotate with the connecting plate 251 quickly, at this time, the centrifugal force received by the first claw 252 is greater than the elastic force of the first elastic piece 253, and the first claw 252 swings to the inner tooth surface of the internal gear 23 in an expanding manner, so as to drive the first hook 2521 to move close to the inner tooth surface of the internal gear 23, and finally to be blocked with the inner tooth surface of the internal gear 23, thereby locking the external gear 22 and playing a role in preventing dropping. This design of this application, external gear 22 also drives internal gear 23 simultaneously and rotates when driving first locking ware 25 and rotate, can realize the locking cooperation between internal gear 23 and the first portion of colluding 2521 more fast like this, realizes more quick anti-falling response, further improves the security. And when the first locking device 25 rotates at the normal speed of the rotating shaft 1, the centrifugal force applied to the first claw 252 is insufficient to overcome the acting force of the first elastic piece 253, so that the first locking device 25 cannot interfere with the rotating shaft 1, the winding and the releasing of the safety belt body 200 are facilitated, the use is convenient, the operation efficiency is improved, and the potential safety hazards are reduced.
The first embodiment of the anti-falling mechanism 300 provided in the embodiments of the present application is described above, and the second embodiment of the anti-falling mechanism 300 provided in the embodiments of the present application is described below, with reference to fig. 1 to 11.
Based on the scheme of the first embodiment:
further, in order to enable one end of the first jaw 252 to better press the first elastic member 253, one end of the first elastic member 253 is rotatably connected to one end of the first jaw 252, and the other end of the first elastic member 253 is rotatably connected to the connection plate 251. The first elastic member 253 may specifically be a shock absorber structure with a spring, so that the piston rod in the shock absorber is matched with the sleeve to achieve more stable extrusion of the spring and spring reset, and of course, the spring can also be directly used, two ends of the spring can be respectively provided with a connecting hook, and the connecting hook is used for achieving rotational connection and matching with the first claw 252 and the connecting plate 251 respectively, so that the shock absorber is not limited in particular.
Further, in order to achieve a more secure snap fit, the number of first claws 252 may be plural, preferably the number of first claws 252 is two.
Taking two first claws 252 as an example, the number of the first elastic members 253 may be designed to be only one, and one connecting rod 254 is further provided. The two first claws 252 are distributed in a point symmetry manner around the rotation center line of the connecting plate 251, one end of one first claw 252 is connected with the connecting plate 251 through a first elastic piece 253, one end of the other first claw 252 is connected with one first claw 252 through a connecting rod 254, one end of the connecting rod 254 is connected with one end of the other first claw 252 in a rotation manner, and the other point of the connecting rod 254 is connected with the position of one first claw 252 close to the first hook portion 2521 of the other first claw 252 in a rotation manner. The linkage between the two first claws 252 is realized by arranging one connecting rod, and the first locker 25 has higher sensitivity to instantaneous acceleration, quicker response and higher strength by adopting the structural design.
Further, in order to enable better mounting and fixing of structural members such as the external gear 22, the internal gear 23, and the like, the housing 21 is provided with a first mounting chamber. The housing 21 may be composed of a bottom case 211 and a top cover 212, the bottom case 211 is provided with a receiving cavity, and the top cover 212 is detachably covered on the top of the receiving cavity to form a first mounting cavity with the bottom case 211, which is not limited in particular.
One end of the rotating shaft 1 extends into the first mounting cavity, specifically, the first mounting cavity is penetrated, limit fit of the rotating shaft 1 and the housing 21 in the axial direction is realized through corresponding shaft sleeve components, and a radial bearing can be embedded at the contact position of the rotating shaft 1 and the housing 21, so that smooth and stable rotation of the rotating shaft 1 is ensured.
The external gear 22, the internal gear 23 and the connecting plate 251 are all sleeved on the shaft section of the rotating shaft 1 extending into the first mounting cavity, the external gear 22 and the connecting plate 251 are synchronously matched with the rotating shaft 1 in a rotating way, and the internal gear 23 is matched with the rotating shaft 1 in a rotating way. Specifically, the top cover 212 may be opened, the external gear 22 is first sleeved and fixed on the shaft section of the rotating shaft 1 located in the bottom shell 211, and synchronous running fit is realized through a key; the internal gear 23 is sleeved on the rotating shaft 1, so that a bearing can be sleeved on the rotating shaft 1 for better relative rotation between the internal gear 23 and the rotating shaft 1, and the internal gear 23 is fixed on the bearing; the first locking device 25 is sleeved and fixed on the rotating shaft 1 and is limited by synchronous rotation and cooperation of structural members such as keys; the transmission gear 24 is arranged between the inner gear 23 and the outer gear 22; the top cover 212 is then assembled. In this application, the axial movement of the internal gear 23, the external gear 22 and the first latch 25 may be limited by providing corresponding sleeve members on the rotating shaft 1, or may be limited by the cooperation of the top cover 212 and the bottom case 211, which is not limited in particular.
Further, the three triangular frames 26 are further included, the three transmission gears 24 are specifically three, the three transmission gears 24 are evenly distributed around the circumference of the internal gear 23, and are respectively rotatably installed at three corner end portions of the triangular frames 26, and the triangular frames 26 are fixedly connected with the housing 21. The tripod 26 may be fixed to the top cover 212, and by providing three gears and fixing the same by the tripod 26, the self-holding operation can be performed more preferably when the internal gear 23 applies a reaction force while the rotation of the transmission gear 24 is ensured, and the tooth breakage is less likely.
Further, in order to make the overall use more flexible and safer, a second latch 3 is also included. The second locker 3 is mounted to the housing 21 and includes a braking mechanism and a second hook 30. The second hook part 30 can be in locking fit with the outer tooth surface of the outer gear 22; the braking mechanism is connected with the second hook portion 30 and is used for driving the second hook portion 30 to switch between a locking position and an unlocking position. The second locker 3 which can be manually operated is matched with the first locker 25 to realize double insurance of manual locking and centrifugal locking, so that the safety belt is more flexible to use, and can be suitable for the operation of the safety belt which is stressed at all times during high-altitude operation, such as: electric power installation, air conditioner installation and the like, has better applicability and application prospect. The second locking device 3 is combined with the first locking device 25 to be applied, so that the problem of insufficient safety caused by the fact that a secondary locking mechanism is not arranged in the conventional safety rope/belt device is solved, and the use safety is further improved.
Further, as shown in fig. 10 and 11, the brake mechanism includes a second claw 31, a second elastic member 32, and a fixed switch 33. The second claw 31 includes a first connecting arm 311 and a second connecting arm 312, one end of the first connecting arm 311 is connected with one end of the second connecting arm 312, and an angle is formed between the first connecting arm 311 and the second connecting arm 312.
The connection between the first connecting arm 311 and the second connecting arm 312 is rotationally connected to the housing 21, specifically, the connection may be realized by a shaft lever, which is not limited. The second hook portion 30 is arranged at the other end of the second connecting arm 312, and the second hook portion 30, the first connecting arm 311 and the second connecting arm 312 can be integrally formed, so that better structural strength is realized, and the use is more stable.
The second elastic member 32 is connected to the second claw 31, and is configured to provide a rotation torque force for the second claw 31 to rotate in a locking direction, where the second elastic member 32 may specifically be a torsion spring, the second elastic member 32 is sleeved on a shaft rod that is rotationally matched with the second claw 31 and the housing 21, and one torque arm of the second elastic member 32 is connected to the first connecting arm 311, and the other torque arm may be connected to an inner bottom surface of the top cover 212. The second elastic member 32 may also be a spring, one end of which is fixed to the housing 21 and the other end of which is fixed to the second jaw 31, without limitation. And a fixed switch 33 is mounted to the housing 21 for restricting rotation of the second jaw 31 when the second hook portion 30 is moved to the unlocking position. The locking position referred to in this application is a position when the second hook portion 30 is completely engaged with the external gear surface of the external gear 22, and the unlocking position is a position when the second hook portion 30 is completely withdrawn from the external gear surface of the external gear 22, and does not interfere with rotation of the external gear 22, and specifically, the unlocking position can be set as required, without limitation.
Further, in order to make the manual locking effect better, a third claw 34 and a third elastic member 35 are also included. Wherein the third jaw 34 further comprises a third connecting arm 341. The third connecting arm 341 is rotatably disposed on the housing 21, the second hook portion 30 is further disposed at an end of an arm segment on one side of the rotation center of the third connecting arm 341, the second claw 31 is further disposed with an extension arm 313 on the rotation center, the extension arm 313 can contact and abut against an arm segment on the other side of the rotation center of the third connecting arm 341, when the second claw 31 rotates in the unlocking direction, the third claw 34 is extruded, so that the third claw 34 rotates in the unlocking direction, and the third elastic member 35 is connected with the third claw 34 and is used for providing a rotation torque force for the third claw 34 to rotate in the locking direction. Through the linkage cooperation between the second claw 31 and the third claw 34, the first connecting arm 311 is operated to drive the second hook portion 30 on the second connecting arm 312 and the third connecting arm 341 to unlock at the same time. The design of the third elastic member 35 in this embodiment can refer to the design of the second elastic member 32, and will not be described in detail. The extension arm 313 in this embodiment may have a triangular convex structure, and may be specifically designed according to practical needs, without limitation. In design, the extension arm 313, the first connection arm 311, the second connection arm 312 and the second hook 30 are integrally formed, that is, the second claw 31 may be an integral metal member, and the third claw 34 may be an integral metal member, which is not limited.
Further, taking the second locking device 3 installed in the first installation cavity as an example, in order to facilitate the pulling operation of the first connecting arm 311, a first protruding post 3121 is disposed on the first connecting arm 311 near the other end, a first limiting guide groove 2121 is disposed on the housing 21 for extending the first protruding post 3121, and the first limiting guide groove 2121 can limit the operation angle of the first connecting arm 311. In order to make the operation more convenient, one end of the first protruding post 3121 extending out of the first limiting guide groove 2121 may be connected to a first shifting block 3122, and then the first connecting arm 311 may be driven by pushing the first shifting block 3122.
Further, in terms of the structural composition of the fixed switch 33, a fixed block 331 and a fourth elastic member 332 are included. The fixed block 331 is slidably mounted on the housing 21, and the sliding direction of the fixed block 331 is perpendicular to the tangential direction where the center point of the swing track at the other end of the first connecting arm 311 is located, so that the fixed block 331 can be matched with the first connecting arm 311. The end of the fixed block 331 facing the second jaw 31 is provided with a first guiding inclined plane 3311 and a stop surface 3312 in contact with the first guiding inclined plane 3311, when the second jaw 31 rotates in the unlocking direction, one end of the first connecting arm 311 can contact with the first guiding inclined plane 3311 and press the fixed block 331 to move, and the stop surface 3312 is used for stopping the first connecting arm 311 after the first connecting arm 311 swings through the fixed block 331. Likewise, for convenient operation, a second protruding column may be disposed on the fixing block 331, and a second limiting guide groove 2122 is disposed on the top cover 212 for extending the second protruding column, so as to limit sliding of the second protruding column, and for convenient stirring of the second protruding column, a second shifting block 333 may be connected to one end of the second protruding column extending the second limiting guide groove 2122.
The fixed switch 33 of the second locking device 3 is designed and applied, so that the use convenience of an applied safety belt device is improved to a certain extent, the problems that the working efficiency of personnel is low, the physical consumption is high, the man-machine efficacy is not met and the potential safety hazard is increased due to the defects of the design of the conventional safety belt buckle ring device are solved well.
The foregoing describes a crash prevention mechanism provided by the present application in detail, and those skilled in the art will recognize that there are variations in the embodiments and application scope of the present application based on the ideas of the embodiments of the present application, and in summary, the present disclosure should not be construed as limiting the present application.
Claims (10)
1. The anti-falling mechanism is characterized by comprising a shell, an external gear, an internal gear, a rotating shaft, a transmission gear and a first locking device;
the external gear is provided with an inner tooth surface, and the inner gear is provided with an inner tooth surface and an outer tooth surface;
the external gear is rotatably arranged on the shell;
the inner gear is rotatably arranged in an inner tooth surface of the outer gear;
the transmission gear is arranged between the external gear and the internal gear and is respectively meshed with the external tooth surface of the external gear and the internal tooth surface of the internal gear;
the first locker comprises a connecting plate, a first claw and a first elastic piece;
the first claw is rotatably arranged on the connecting plate, one end of the first claw is connected with the connecting plate through the first elastic piece, and the other end of the first claw is provided with a first hook part which can be in locking fit with the inner tooth surface of the internal gear;
when the centrifugal force borne by the first claw is larger than the elastic force of the first elastic piece, the first claw swings until the first hook part is in locking fit with the inner tooth surface of the inner gear;
the rotating shaft is rotatably arranged on the shell and is in synchronous rotation connection with the external gear and the connecting plate.
2. The fall protection mechanism according to claim 1, wherein one end of the first elastic member is rotatably connected to one end of the first claw, and the other end of the first elastic member is rotatably connected to the connecting plate.
3. The fall arrest mechanism according to claim 1, wherein the number of the first claws is two, and the number of the first elastic members is one;
the device also comprises a connecting rod;
the two first clamping claws are symmetrically distributed around the rotation center line of the connecting plate;
one end of one of the first clamping claws is connected with the connecting plate through the first elastic piece;
one end of the other first claw is connected with one of the first claws through the connecting rod;
one end of the connecting rod is rotationally connected with one end of the other first claw, and the other point of the connecting rod is rotationally connected with the position, close to the first hook, of one of the first claws.
4. The fall arrest mechanism according to claim 1, wherein said housing is provided with a first mounting cavity;
one end of the rotating shaft extends into the first mounting cavity;
the external gear, the internal gear and the connecting plate are sleeved on a shaft section of the rotating shaft extending into the first mounting cavity;
the external gear and the connecting plate are synchronously matched with the rotating shaft in a rotating way;
the internal gear is in relative rotation fit with the rotating shaft.
5. The fall arrest mechanism according to claim 1, further comprising a tripod;
the number of the transmission gears is three;
the three transmission gears are uniformly distributed around the circumference of the internal gear and are respectively rotatably arranged at the three corner ends of the tripod;
the tripod is fixedly connected with the shell.
6. The fall arrest mechanism according to claim 4, further comprising a second lock;
the second locker is arranged on the shell and comprises a braking mechanism and a second hook part;
the second hook part can be in locking fit with an external tooth surface of the external gear;
the braking mechanism is connected with the second hook part and used for driving the second hook part to switch between a locking position and an unlocking position.
7. The fall arrest mechanism according to claim 6, wherein the brake mechanism comprises a second pawl, a second resilient member, and a stationary switch;
the second claw comprises a first connecting arm and a second connecting arm;
one end of the first connecting arm is connected with one end of the second connecting arm, and the first connecting arm and the second connecting arm are distributed at an angle;
the joint of the first connecting arm and the second connecting arm is rotationally connected with the shell;
the second hook part is arranged at the other end of the second connecting arm;
the second elastic piece is connected with the second claw and is used for providing a rotating torque force for rotating the second claw in the locking direction;
the fixed switch is arranged on the shell and can be used for limiting the rotation of the second claw when the second hook part moves to the unlocking position.
8. The fall arrest mechanism according to claim 7, further comprising a third pawl and a third resilient member;
the third claw further comprises a third connecting arm;
the third connecting arm is rotatably arranged on the shell;
the second hook part is also arranged at the tail end of the arm section positioned at one side of the rotation center of the third connecting arm;
the second clamping jaw is further provided with an extension arm at the rotation center;
the extension arm can contact and prop against an arm section positioned on the other side of the rotation center of the extension arm, and when the second claw rotates in the unlocking direction, the third claw is extruded, so that the third claw rotates in the unlocking direction;
the third elastic piece is connected with the third claw and is used for providing rotating torque force for rotating the third claw towards the locking direction.
9. The fall arrest mechanism according to claim 8, wherein said second lock is mounted within said first mounting cavity;
a first protruding column is arranged on the first connecting arm close to the other end;
the shell is provided with a first limiting guide groove for the first protruding column to extend out.
10. The fall arrest mechanism according to claim 8, wherein the fixed switch comprises a fixed block and a fourth elastic member;
the fixed block is slidably arranged on the shell, and the sliding direction of the fixed block is perpendicular to the tangential direction of the center point of the swing track at the other end of the first connecting arm;
a first guide inclined plane is arranged at one end of the fixed block, which faces the second clamping jaw, and a stop surface in contact connection with the first guide inclined plane is arranged at one end of the fixed block, which faces the second clamping jaw;
when the second clamping jaw rotates in the unlocking direction, one end of the first connecting arm can contact with the first guide inclined plane and press the fixed block to move;
the stop surface is used for stopping the first connecting arm after the first connecting arm swings through the fixed block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369847.3A CN113883189B (en) | 2021-11-18 | 2021-11-18 | Anti-falling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111369847.3A CN113883189B (en) | 2021-11-18 | 2021-11-18 | Anti-falling mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113883189A CN113883189A (en) | 2022-01-04 |
| CN113883189B true CN113883189B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111369847.3A Active CN113883189B (en) | 2021-11-18 | 2021-11-18 | Anti-falling mechanism |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191211790A (en) * | 1912-05-17 | 1913-02-20 | Cuthbert Coates Smith | Improvements in Fire-escapes. |
| CN2468511Y (en) * | 1989-10-07 | 2002-01-02 | 苏正万 | Mechanically operated type device for person rescuing from high building |
| JP2003070928A (en) * | 2001-09-03 | 2003-03-11 | Ashimori Ind Co Ltd | Fall prevention device |
| BRPI0920491A2 (en) * | 2009-03-05 | 2016-07-26 | Lear Corp | reclining mechanism for a vehicle seat that is connected to a second axle reclining mechanism, reclining system for use in a vehicle and seat assembly for use in a vehicle |
| CN109310892A (en) * | 2016-03-31 | 2019-02-05 | 克拉斯·兹瓦尔特 | The device declined by rope |
| JP2019158027A (en) * | 2018-03-14 | 2019-09-19 | 株式会社栗本鐵工所 | Rotation brake device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI641404B (en) * | 2017-04-07 | 2018-11-21 | 振鋒企業股份有限公司 | Anti-fall device |
-
2021
- 2021-11-18 CN CN202111369847.3A patent/CN113883189B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191211790A (en) * | 1912-05-17 | 1913-02-20 | Cuthbert Coates Smith | Improvements in Fire-escapes. |
| CN2468511Y (en) * | 1989-10-07 | 2002-01-02 | 苏正万 | Mechanically operated type device for person rescuing from high building |
| JP2003070928A (en) * | 2001-09-03 | 2003-03-11 | Ashimori Ind Co Ltd | Fall prevention device |
| BRPI0920491A2 (en) * | 2009-03-05 | 2016-07-26 | Lear Corp | reclining mechanism for a vehicle seat that is connected to a second axle reclining mechanism, reclining system for use in a vehicle and seat assembly for use in a vehicle |
| CN109310892A (en) * | 2016-03-31 | 2019-02-05 | 克拉斯·兹瓦尔特 | The device declined by rope |
| JP2019158027A (en) * | 2018-03-14 | 2019-09-19 | 株式会社栗本鐵工所 | Rotation brake device |
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| Publication number | Publication date |
|---|---|
| CN113883189A (en) | 2022-01-04 |
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