CN114198438B - Rotary swing arm type anti-falling self-locking safety device - Google Patents
Rotary swing arm type anti-falling self-locking safety device Download PDFInfo
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- CN114198438B CN114198438B CN202010989923.XA CN202010989923A CN114198438B CN 114198438 B CN114198438 B CN 114198438B CN 202010989923 A CN202010989923 A CN 202010989923A CN 114198438 B CN114198438 B CN 114198438B
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- swing arm
- wheel body
- swing
- safety device
- driving wheel
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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
- F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Braking Arrangements (AREA)
- Emergency Lowering Means (AREA)
Abstract
The invention relates to the field of high-altitude anti-falling tools, in particular to a rotary swing arm type anti-falling self-locking safety device. The safety device is used for climbing operation areas such as transformer substation frameworks and power transmission towers and comprises a straight chute, a transmission wheel, a connecting shaft and a braking mechanism, wherein the braking mechanism comprises a wheel body and at least two brake shoes, the brake shoes are distributed around the circumferential direction of the wheel body, the end parts of every two brake shoes are elastically connected, and the whole safety device is of an annular structure. The driving wheel rolls along the rolling path of the straight sliding groove to drive the wheel body to synchronously rotate, and the swing arm on the wheel body swings against the rotation direction of the wheel body under the action of centrifugal force, so that the brake shoes are jacked to be propped up, the annular outer diameter of each brake shoe is increased, and friction force is generated between the annular outer diameter of each brake shoe and the side wall of the straight sliding groove to brake and reduce the speed. The invention can continuously protect climbing operators, and when falling, the climbing operators rotate at high speed to generate friction braking in time, thereby ensuring the personal safety of falling operators and preventing accidents.
Description
Technical Field
The invention relates to the field of high-altitude anti-falling tools, in particular to a rotary swing arm type anti-falling self-locking safety device.
Background
The framework of the outdoor open-type transformer substation is an important component part in the substation and can be divided into a wire inlet frame, a bus bar frame, a central door-shaped frame, a corner frame, a transformer combined frame and the like, and the height of the framework can reach tens of meters or even nearly 30 meters according to different design requirements of the transformer substation. Generally, an operator needs to ascend to work, generally, the operator climbs a ladder on a framework to a height of tens of meters or even hundreds of meters, and the operator needs to use a safety belt to protect one step and one buckle in the climbing process, so that the operation is more complicated. However, if the safety belt is not used for protection, personal casualties are very easy to cause, and the falling accidents occur because the safety belt is not tied in the process of climbing the framework and the iron tower every year.
Chinese patent publication No. CN102815650a discloses a fall protection device on 12 months of 2012, which uses the rotational centrifugal force of the rotating wheel to brake in time, but the fall protection device is mainly matched with a lifting platform to be used, not used for climbing by a single person, and has complex components and certain maintenance difficulty.
Disclosure of Invention
The invention provides a rotary swing arm type anti-falling self-locking safety device which is applied to climbing and anti-falling of operators and does not need additional manual operation in the climbing process, once the operators suddenly lose weight and fall in the climbing process, the rotation centrifugal force is utilized to brake and slow down in time, so that the personal safety of the falling operators is ensured, and accidents are prevented.
In order to solve the technical problems, the invention adopts the following technical scheme:
the rotary swing arm type anti-falling self-locking safety device comprises a straight chute, a driving wheel, a connecting shaft and a braking mechanism, wherein the braking mechanism is tightly attached to the driving wheel, and the connecting shaft penetrates through the centers of the driving wheel and the braking mechanism at the same time; the braking mechanism comprises a wheel body and at least two braking shoes, wherein the braking shoes are arranged around the circumference of the wheel body, the end parts of the braking shoes are provided with elastic linkage parts, the end parts of every two braking shoes are elastically connected, and the whole braking mechanism is of an annular structure; the wheel body is hinged with a plurality of swing arms, and each swing arm is uniformly distributed around the circumferential direction of the wheel body; one end of the swing arm is hinged with the wheel body, and the other end of the swing arm swings back and forth to penetrate through the maximum outer diameter of the wheel body; the transmission wheel is clamped and fixed with the wheel body and synchronously rotates around the connecting shaft; the inner side of the straight sliding groove I is provided with a guide rail in a protruding mode, and the driving wheel rolls along the guide rail; the distance between one side of the guide rail and the opposite side of the guide rail is smaller than the maximum annular outer diameter of the brake shoe and larger than the minimum annular outer diameter of the brake shoe.
The elastic linkage part is divided into a first linkage part and a second linkage part, the first linkage part is provided with a positioning column, the second linkage part is provided with a limiting groove arranged along an arc line, the limiting groove is matched with the positioning column, and the positioning column slides back and forth in the limiting groove; an elastic piece is arranged in the limiting groove, the elastic piece is abutted against the positioning column along the sliding direction of the positioning column, and the elastic piece is always kept in a compressed state; the ends of the two matched brake shoes are respectively provided with a first linkage part and a second linkage part. The first linkage part and the second linkage part are assembled to realize elastic linkage. It should be noted that, the end portion of the brake shoe is only provided with the first linkage portion or the second linkage portion, and the elastic linkage portion of the two brake shoes matched with one end cannot be the same linkage portion, or cannot be assembled. When the brake shoe is propped open, the positioning column of the first linkage part extrudes the elastic part, overcomes the elastic force of the elastic part and slides along the limit groove of the second linkage part. Conversely, the positioning column returns under the elasticity of the elastic piece, and the brake shoe completes the return.
The driving wheel rolls along the rolling path of the straight sliding groove to drive the wheel body to synchronously rotate, and the swing arm swings under the action of centrifugal force, so that each brake shoe is jacked and spread in pairs, and the annular outer diameter of the brake shoes is increased to brake; the swing direction of the swing arm is opposite to the rotation direction of the wheel body.
The safety device is used for climbing operation areas such as transformer substation frameworks and power transmission towers, wherein the straight sliding grooves are vertically arranged, and the straight sliding grooves are opened at specific positions at two end parts and are used for being filled with parts such as driving wheels and braking mechanisms at the beginning. In addition, a straight chute which is transversely and longitudinally connected continuously can be arranged, and the protection effect can be achieved only by connecting the safety device with an operator safety belt all the time without frequently assembling and disassembling. Generally, the connecting shaft end is fixedly connected to the operator seat belt.
In a general state, the annular outer diameter of the brake shoe is smaller than the distance between the straight sliding groove and the side inner wall, and the brake shoe is free from resistance during low-speed rotation. When the wheel suddenly falls, the wheel body rotates to enable the brake shoes to be subjected to centrifugal force action and outwards expand, and as the rotation acceleration is increased, the swing arm on the wheel body is subjected to centrifugal force action and swings against the rotation direction of the wheel body, so that the brake shoes are jacked and unfolded, the annular outer diameter of each brake shoe is increased to generate friction force with the side wall of the straight chute, and braking and deceleration are carried out.
Preferably, the driving wheel is a gear, the guide rail is a straight rack, and the straight rack is used as a rolling path of the driving wheel. The driving wheel rolls back and forth along the spur gear without additional operation.
Preferably, the two sides of the driving wheel are respectively stuck and clamped with a braking mechanism, one side, far away from the driving wheel, of the braking mechanism is covered with an outer cover, and the two outer covers lock and clamp each brake shoe. The driving wheel is clamped between the braking mechanisms at two sides, so that the stress balance at two sides is ensured during high-speed rotation braking, and meanwhile, the outer cover covers the two sides of the wheel body and the brake shoes, so that the radial movement of the swing arms and the brake shoes is not influenced.
Preferably, the swing arms are arranged in a central symmetry manner, and the center of symmetry is the center of the wheel body. The swing arms are uniformly and symmetrically arranged, and are swung and ejected to the inner wall of the brake shoe under the action of centrifugal force, so that the brake shoe is propped up.
Preferably, the swing arm is bar-shaped structure, and the swing one end of swing arm is equipped with the kicking block, kicking block weight is greater than the weight of swing arm articulated one end. The swing arm is designed into a strip-shaped structure suitable for swinging, wherein the weight of a top block at the swinging end accounts for more than half of the total weight of the swing arm, and the swinging trend is more obvious under the action of centrifugal force.
Preferably, the wheel body is provided with a swinging cavity for the swing arm to swing freely, and one side of the swinging cavity intersecting with the outer diameter of the wheel body is hollowed; the number of the swing cavities corresponds to that of the swing arms one by one, and the swing cavities are mutually independent; the swing cavity is fixed with a fixed shaft for hinging the swing arm. The swing cavity provides a space for the swing arm to swing, and meanwhile, the swing range of the swing arm is restrained. The swing cavity is of an open structure, and one side of the swing cavity, which is intersected with the outer diameter of the wheel body, is hollowed out so that the swing arm swings out.
Preferably, the top block is of a cylindrical structure or a spherical structure. The outer edge of the ejector block is generally an arc surface, so that friction force in the ejection process is reduced conveniently.
Preferably, friction plates are arranged on the circumferential outer wall of the brake shoe. The friction plate is a common component of the existing brake and is mainly used for enhancing the braking effect and the wear resistance of the brake shoe.
Preferably, the end of the connecting shaft is provided with a connecting ring. During operation, an operator can climb only by buckling the lock catch on the safety belt with the connecting ring, and the driving wheel is driven to roll upwards along the straight sliding groove in the process, so that the climbing efficiency is effectively improved unlike the traditional safety belt with one-step buckling.
Preferably, the elastic member is a spring or a rubber block. The elastic member is a member having elastic restoring ability, and is preferably a spring.
Compared with the prior art, the invention has the beneficial effects that: the invention discloses a rotary swing arm type anti-falling self-locking safety device, which enables climbing operators to be continuously protected, and when falling occurs, the swing arm is ejected out at a high speed to generate friction braking in time, so that the personal safety of the falling operators is ensured, and accidents are prevented. In addition, the safety device can run along the transverse and longitudinal straight sliding grooves in the high air, is continuously protected, does not need to replace a safety belt, is convenient to use, is safe and reliable, and effectively improves the working efficiency. The brake shoe is firm in elastic fit and good in safety.
Drawings
Fig. 1 is a front view of the overall structure of the present invention.
Fig. 2 is a use state diagram of example 1.
Fig. 3 is a schematic structural diagram of embodiment 1.
Fig. 4 is an exploded view of the assembly of example 1.
Fig. 5 is a schematic view showing the state of use of the brake mechanism of embodiment 1.
Fig. 6 is a schematic diagram showing a braking state structure of a brake mechanism according to embodiment 1.
Fig. 7 is an internal structural view of the brake mechanism of embodiment 1.
Fig. 8 is a schematic view of a first configuration of the elastic linkage.
Fig. 9 is a schematic view of a second construction of the elastic linkage.
Fig. 10 is an assembled state diagram of the elastic linking portion.
FIG. 11 is a schematic illustration of an assembled brake shoe of example 2.
The device comprises a straight sliding groove 1, a guide rail 11, a driving wheel 2, a connecting shaft 3, a connecting ring 31, a braking mechanism 4, a wheel body 41, a swinging cavity 411, a fixed shaft 412, a brake shoe 42, an outer cover 43, a friction plate 44, an elastic linkage part 45, a first linkage part 451, a second linkage part 452, a 453 positioning column, a 454 limiting groove, an elastic piece 455, a swing arm 46 and a top block 461.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
Example 1
As shown in fig. 1-4, the present embodiment provides a rotary swing arm 46 type anti-falling self-locking safety device, which comprises a straight chute 1, a driving wheel 2, a connecting shaft 3, a braking mechanism 4 and an outer cover 43, wherein the driving wheel 2 is a gear, the straight chute 1 is a rectangular channel steel, a guide rail 11 in rolling fit with the driving wheel 2 is arranged at the inner side of the straight chute 1, in this embodiment, the guide rail 11 is a straight rack, and the straight rack is a rolling path. Specifically, for convenience of description, the side wall where the straight rack is located is the right side of the straight chute 1, the left side of the straight chute 1 is smooth, and the other two sides are the front side and the rear side. The front side of the straight chute 1 is hollowed with a partition groove so that the connecting shaft 3 extends out, and meanwhile, a baffle plate for intercepting components of the driving wheel 2 and the braking mechanism 4 in the straight chute 1 is reserved, and the partition groove of the straight chute 1 is arranged on the front side and the rear side of the straight chute 1 is closed in the embodiment.
The driving wheel 2 is clamped between the braking mechanisms 4 at two sides and is clamped and fixed with the braking mechanisms 4. Furthermore, the connecting shaft 3 penetrates through the centers of the driving wheel 2 and the braking mechanism 4 at the same time, and the end part of the connecting shaft 3 is provided with a connecting ring 31, and the connecting ring 31 and the front side of the straight chute 1 are in the same direction and are positioned outside the separation groove.
Specifically, as shown in fig. 5, the brake mechanism 4 includes a wheel 41 and two brake shoes 42, wherein the two brake shoes 42 are semicircular, the two brake shoes 42 are disposed around the wheel 41 in the circumferential direction to form an annular structure, the end portions of the two brake shoes 42 are provided with elastic linkage portions 45, and the two brake shoes 42 are elastically connected through the elastic linkage portions 45. Meanwhile, the circumferential outer wall of the brake shoe 42 is provided with a friction plate 44. In the initial assembly state, the driving wheel 2 is meshed with the guide rail 11, and gaps are reserved between the left side and the right side of the brake shoe 42, namely, the distance between one side of the guide rail 11 of the straight chute 1 and the opposite side of the guide rail 11 is smaller than the maximum annular outer diameter of the brake shoe 42 and larger than the minimum annular outer diameter of the brake shoe 42, so that the brake shoe can roll without resistance in the general state, and can be formulated in time when falling.
Specifically, the circle centers of the driving wheel 2 and the wheel body 41 are positioned on the same axis, the driving wheel 2 is clamped and fixed with the wheel body 41, and the driving wheel 2 and the wheel body 41 synchronously rotate around the connecting shaft 3. At the same time, the side of the brake mechanism 4 far away from the driving wheel 2 is covered with an outer cover 43, the two outer covers 43 lock and clamp each brake shoe 42, and the connecting shaft 3 also penetrates through the centers of the two outer covers 43 of the outer covers 43 at the same time, as shown in fig. 4.
Specifically, as shown in fig. 5-6, the elastic linkage part 45 is divided into a first linkage part 451 and a second linkage part 452, wherein the first linkage part 451 is provided with a positioning column 453, the second linkage part 452 is provided with a limiting groove 454 arranged along an arc line, the limiting groove 454 is matched with the positioning column 453, and the positioning column 453 slides back and forth in the limiting groove 454. In addition, the limiting groove 454 is provided with an elastic member 455, the elastic member 455 abuts against the positioning column 453 along the sliding direction of the positioning column 453, and the elastic member 455 is always kept in a compressed state, in this embodiment, the elastic member 455 is a rubber block, or a spring may be used as the elastic member 455 in other cases.
Note that, only the first linkage part 451 or the second linkage part 452 is provided at the end of the brake shoe 42, and the first linkage part 451 and the second linkage part 452 are provided at the end of the two brake shoes 42 that are engaged, respectively, as shown in fig. 10. The specific matching shapes of the first and second coupling parts 451, 452 may take various forms, so the present application is not limited to the specific one, and two common structures are shown in fig. 8 and 9.
In this embodiment, as shown in fig. 7, six swing arms 46 are hinged on the wheel 41, each swing arm 46 is uniformly distributed around the circumferential direction of the wheel 41, and is centrally and symmetrically arranged, and the center of symmetry is the center of the wheel 41. Specifically, the wheel body 41 is provided with a swing cavity 411 for the swing arm 46 to swing freely, a fixed shaft 412 for hinging the swing arm 46 is fixed in the swing cavity 411, and at the same time, one side of the swing cavity 411 intersecting with the outer diameter of the wheel body 41 is hollowed out so that the swing arm 46 swings out. Moreover, the number of the swinging cavities 411 corresponds to that of the swinging arms 46 one by one, and each swinging cavity 411 is independent of the other, so that a space for swinging the swinging arms 46 is provided, and meanwhile, the swinging range of the swinging arms 46 is restrained, so that the swinging arms 46 swing to pass through the maximum outer diameter of the wheel body 41 under the action of centrifugal force.
In this embodiment, the swing arm 46 has a bar-shaped structure, one end of the swing arm 46 is hinged to the fixed shaft 412, one end of the swing arm is provided with a top block 461 with a cylindrical structure, the weight of the top block 461 is greater than that of the hinged end of the swing arm 46, specifically, the weight of the top block 461 is more than half of the total weight of the swing arm 46, and the swing trend can be stronger under the action of centrifugal force. Under the condition that the wheel body 41 rotates in an accelerating mode clockwise, the swing arms 46 on the wheel body 41 swing anticlockwise under the action of centrifugal force, so that the brake shoes 42 are pushed to be propped up, the brake shoes 42 are propped up to brake, then the brake shoes are automatically folded and reset under elasticity, braking or deceleration can be automatically carried out under emergency conditions, additional manual control is not needed, and the control effect is better, as shown in fig. 3-4. In other conditions, the rotation angle of the swing arm 46 can be varied by varying the position of the fixed shaft 412 to accommodate either clockwise or counterclockwise braking, such structural adjustments being contemplated in the art and therefore not specifically described in this implementation.
The specific braking process of the braking mechanism 4 is as follows: when the rotational acceleration of the wheel body 41 reaches a certain value, the centrifugal force generated reaches the trigger point of the braking device. The brake shoes 42 have a tendency to expand outwardly under centrifugal force. Meanwhile, the swing arms 46 on the wheel body 41 swing against the rotation direction of the wheel body 41 under the action of centrifugal force, and the top blocks 461 on the swing arms 46 push each brake shoe 42 and prop the brake shoes 42 two by two, so that the annular outer diameter of the brake shoes 42 is increased, and the speed is reduced and the braking is performed. When the brake shoe 42 is spread, the positioning column 453 of the first linkage part 451 presses the elastic member 455, overcomes the elastic force of the elastic member 455, and slides along the limiting groove 454 of the second linkage part 452. When the rotational acceleration of the wheel body 41 is reduced, the centrifugal force of the swing arm 46 is reduced, the brake shoes 42 slide along the limiting grooves 454 to return under the elasticity of the elastic piece 455, and the brake shoes 42 are retracted and reset.
The overall implementation procedure of this embodiment is as follows:
before climbing, an operator buckles the lock catch on the safety belt with the safety device connecting ring 31 and then climbs. The driving wheel 2 is driven to roll upwards along the straight chute 1 in the climbing process, and no additional operation is needed. When workers fall suddenly, the driving wheel 2 rolls down rapidly along the rolling path of the straight sliding groove 1, and the driving wheel 2 drives the braking mechanisms 4 on two sides to rotate synchronously. When falling, the rotation acceleration of the driving wheel 2 and the wheel body 41 is increased, and the swing arm 46 on the wheel body 41 swings against the rotation direction of the wheel body 41 under the action of centrifugal force, so that the brake shoes 42 are propped up, the annular outer diameter of each brake shoe 42 is expanded, the friction plate 44 on the outer wall of the brake shoe 42 generates friction force with the side wall of the straight chute 1, and braking and deceleration are performed. Finally, the falling personnel can descend at a constant speed, so that the personal safety of the falling personnel is ensured, and accidents are prevented.
Example 2
The present embodiment also provides a rotary swing arm 46 type anti-falling self-locking safety device, which has a principle and a structure similar to those of embodiment 1, and is different in that the number of the brake shoes 42 of the brake mechanism 4 in this embodiment is more than two, and the end parts of each brake shoe 42 are connected end to end through an elastic linkage part 45 to form an annular structure, as shown in fig. 11, when in braking, each brake shoe 42 is subjected to the rotation thrust of the swing arm 46 and simultaneously is outwards spread to brake.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The utility model provides a rotatory swing arm formula self-locking safety ware of preventing falling which characterized in that: the device comprises a straight chute, a driving wheel, a connecting shaft and a braking mechanism, wherein the braking mechanism is tightly attached to the driving wheel, and the connecting shaft penetrates through the centers of the driving wheel and the braking mechanism at the same time;
the braking mechanism comprises a wheel body and at least two braking shoes, wherein the braking shoes are arranged around the circumference of the wheel body, the end parts of the braking shoes are provided with elastic linkage parts, the end parts of every two braking shoes are elastically connected, and the whole braking mechanism is of an annular structure; the wheel body is hinged with a plurality of swing arms, and each swing arm is uniformly distributed around the circumferential direction of the wheel body; one end of the swing arm is hinged with the wheel body, and the other end of the swing arm swings back and forth to penetrate through the maximum outer diameter of the wheel body;
the elastic linkage part is divided into a first linkage part and a second linkage part, the first linkage part is provided with a positioning column, the second linkage part is provided with a limit groove arranged along an arc line, the limit groove is matched with the positioning column, and the positioning column slides back and forth in the limit groove; an elastic piece is arranged in the limiting groove, the elastic piece is abutted against the positioning column along the sliding direction of the positioning column, and the elastic piece is always kept in a compressed state; the ends of the two matched brake shoes are respectively provided with a first linkage part and a second linkage part;
the transmission wheel is clamped and fixed with the wheel body and synchronously rotates around the connecting shaft;
the inner side of the straight sliding groove I is provided with a guide rail in a protruding mode, and the driving wheel rolls along the guide rail; the distance between one side of the guide rail and the opposite side of the guide rail is smaller than the maximum annular outer diameter of the brake shoe and larger than the minimum annular outer diameter of the brake shoe;
the driving wheel rolls along the rolling path of the straight sliding groove to drive the wheel body to synchronously rotate, and the swing arm swings under the action of centrifugal force, so that each brake shoe is jacked and spread in pairs, and the annular outer diameter of the brake shoes is increased to brake; the swing direction of the swing arm is opposite to the rotation direction of the wheel body.
2. The rotary swing arm anti-fall self-locking safety device according to claim 1, wherein: the driving wheel is a gear, the guide rail is a straight rack, and the straight rack is used as a rolling path of the driving wheel.
3. The rotary swing arm anti-fall self-locking safety device according to claim 2, wherein: and two sides of the driving wheel are respectively stuck and clamped with a braking mechanism, one side, far away from the driving wheel, of the braking mechanism is covered with an outer cover, and the two outer covers lock and clamp each brake shoe.
4. The rotary swing arm anti-fall self-locking safety device according to claim 3, wherein: the swing arms are arranged in a central symmetry mode, and the center of symmetry is the center of the wheel body.
5. The rotary swing arm anti-fall self-locking safety device according to claim 4, wherein: the swing arm is bar-shaped structure, and the swing one end of swing arm is equipped with the kicking block, kicking block weight is greater than the weight of the articulated one end of swing arm.
6. The rotary swing arm anti-fall self-locking safety device according to claim 5, wherein: the wheel body is provided with a swing cavity for the swing arm to swing freely, and one side of the swing cavity intersecting with the outer diameter of the wheel body is hollowed; the number of the swing cavities corresponds to that of the swing arms one by one, and the swing cavities are mutually independent; the swing cavity is fixed with a fixed shaft for hinging the swing arm.
7. The rotary swing arm anti-fall self-locking safety device according to claim 6, wherein: the top block is of a cylindrical structure or a spherical structure.
8. The rotary swing arm anti-fall self-locking safety device according to any one of claims 1 to 7, wherein: friction plates are arranged on the circumferential outer wall of the brake shoe.
9. The rotary swing arm anti-fall self-locking safety device according to claim 8, wherein: the end part of the connecting shaft is provided with a connecting ring.
10. The rotary swing arm anti-fall self-locking safety device according to claim 9, wherein: the elastic piece is a spring or a rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989923.XA CN114198438B (en) | 2020-09-18 | 2020-09-18 | Rotary swing arm type anti-falling self-locking safety device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989923.XA CN114198438B (en) | 2020-09-18 | 2020-09-18 | Rotary swing arm type anti-falling self-locking safety device |
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| CN114198438A CN114198438A (en) | 2022-03-18 |
| CN114198438B true CN114198438B (en) | 2023-08-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007134441A1 (en) * | 2006-05-19 | 2007-11-29 | Hydro Mobile Inc. | Braking device for elevating platform assembly |
| CN101657374A (en) * | 2007-04-13 | 2010-02-24 | 奥蒂斯电梯公司 | Governor sheave with an overlapping flyweight system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201019462D0 (en) * | 2010-11-18 | 2010-12-29 | Latchways Plc | Rescue descender system |
| JP5781619B2 (en) * | 2011-09-27 | 2015-09-24 | ナブテスコ株式会社 | Vehicle speed control device and vehicle equipped with speed control device |
| GB2556892B (en) * | 2016-11-23 | 2022-04-27 | Latchways Plc | Self-retracting lifeline fall arrest device |
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- 2020-09-18 CN CN202010989923.XA patent/CN114198438B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007134441A1 (en) * | 2006-05-19 | 2007-11-29 | Hydro Mobile Inc. | Braking device for elevating platform assembly |
| CN101657374A (en) * | 2007-04-13 | 2010-02-24 | 奥蒂斯电梯公司 | Governor sheave with an overlapping flyweight system |
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| CN114198438A (en) | 2022-03-18 |
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