CN111852315A - Anti-falling device and ladder stand assembly - Google Patents
Anti-falling device and ladder stand assembly Download PDFInfo
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- CN111852315A CN111852315A CN202010732337.7A CN202010732337A CN111852315A CN 111852315 A CN111852315 A CN 111852315A CN 202010732337 A CN202010732337 A CN 202010732337A CN 111852315 A CN111852315 A CN 111852315A
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- bracket
- ladder
- movable rod
- rod
- ladder stand
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/18—Devices for preventing persons from falling
- E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention relates to the technical field of electric power operation and maintenance equipment, and particularly discloses a falling prevention device and a ladder stand assembly. The anti-falling device comprises a support assembly, wherein at least one sliding mechanism is movably arranged on two sides of the support assembly, the sliding mechanisms can slide relative to a longitudinal rod of the ladder stand, a locking mechanism is further arranged on the support assembly, the locking mechanism is arranged between the two sliding mechanisms, the locking mechanism comprises a movable rod, the movable rod comprises a first end close to the longitudinal rod and a second end far away from the longitudinal rod, a locking ring is arranged on the second end, a hinge point is arranged between the first end and the second end, the movable rod is hinged with the support assembly through the hinge point, so that the movable rod can rotate relative to the locking mechanism, and when the movable rod rotates to a designated area, the sliding mechanisms and the ladder stand relatively still. The anti-falling device is low in cost, high in safety and low in operation difficulty, and can improve the working efficiency of operation and maintenance personnel.
Description
Technical Field
The invention relates to the technical field of electric power operation and maintenance equipment, in particular to a falling prevention device and a ladder stand assembly.
Background
The climbing ladders for the operation and maintenance personnel to go up and down are arranged at the outdoor framework and the iron tower of the power transmission line in the transformer substation, so that the operation and maintenance personnel can go up and down the climbing ladders and perform related work on the high-altitude framework. Most conventional framework ladders comprise longitudinal bars on both sides and transverse bars arranged evenly between the two longitudinal bars, but do not have any means for preventing the maintenance personnel from falling down when climbing a ladder. The safety belt that only can rely on self to dress when the ladder is gone up to the work fortune dimension personnel, locks the safety buckle of safety belt on the transverse bar of ladder, climbs one to two transverse bars after, loosens the safety buckle on the former transverse bar, locks the safety buckle on the transverse bar of one to two on the ascending direction, and fortune dimension personnel up climb again … … so relapse.
As the outdoor ladder stand is usually as high as 20-50 meters, the climbing process is time-consuming and labor-consuming, and the operation and maintenance personnel are in a state without safety protection when loosening the safety buckle in the climbing process, and have great potential safety hazards when climbing up and down. Moreover, the existing crawling ladder is extremely large in stock, and if the traditional method is used, all crawling ladders are additionally provided with the track and the anti-falling cage and need to be carried out in combination with power failure, so that the construction progress is extremely slow, the cost is high, and the operation difficulty is high.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a fall-preventing device, which has low cost, high safety and low operation difficulty, and can improve the working efficiency of operation and maintenance personnel.
Another object of the embodiments of the present invention is to provide a ladder assembly, which has a simple structure and high safety.
To achieve the purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, the anti-falling device comprises a support component, wherein at least one sliding mechanism is movably arranged on two sides of the support component, the sliding mechanism can slide relative to a longitudinal rod of a ladder stand, a locking mechanism is further arranged on the support component, the locking mechanism is arranged between the two sliding mechanisms, the locking mechanism comprises a movable rod, the movable rod comprises a first end close to the longitudinal rod and a second end away from the longitudinal rod, a locking ring is arranged on the second end, a hinge point is arranged between the first end and the second end, and the movable rod and the support component are hinged through the hinge point so that the movable rod can rotate relative to the support component, and when the movable rod rotates to a designated area, the sliding mechanism and the ladder stand are relatively static.
As a preferred scheme of the anti-falling device, the locking mechanism further comprises a link mechanism movably disposed on the bracket assembly, the link mechanism comprises a driving portion fixedly connected with the hinge point and a bending portion connected with the driving portion, the bending portion and the transverse rod of the ladder stand are located on the same side of the longitudinal rod, when the movable rod rotates to an appointed area, the driving portion can drive the bending portion to rotate, so that the bending portion is hung and buckled on the transverse rod of the ladder stand.
As a preferred scheme of the anti-falling device, the driving part comprises a driving contact and a reversing gear box, the driving contact is connected with an input shaft of the reversing gear box, an output shaft of the reversing gear box is connected with the bending part, the hinge point is abutted to the driving contact, and when the movable rod rotates to a specified area, the driving contact drives the reversing gear box so that the bending part rotates to be hung and buckled on the transverse rod of the ladder stand.
As a preferred scheme of anti-falling device, slide mechanism includes first pulley, pivot and fastener, the pivot setting is in the axial region of first pulley, first pulley can be relative the pivot rotates, the pivot with the fastener is fixed to be set up, the fastener with the bracket component is fixed to be set up.
As a preferred solution of the fall arrest device, the radial side of the first pulley is provided with a groove corresponding to the profile of the longitudinal rod.
As a preferable embodiment of the anti-falling device, the bracket assembly at least includes a first bracket and a second bracket, and the sliding mechanism is respectively disposed on the first bracket and the second bracket and between the first bracket and the second bracket.
As a preferable scheme of the anti-falling device, an adjusting mechanism is arranged between the first bracket and the second bracket, and the adjusting mechanism can adjust the distance between the first bracket and the second bracket.
As a preferable scheme of the anti-falling device, a rubber layer is arranged on one side of the first end, which is close to the ladder stand.
As a preferable scheme of the anti-falling device, a return spring is arranged between the movable rod and the bracket assembly, and the return spring always has a tendency of driving the first end to be far away from the longitudinal rod.
In a second aspect, there is provided a ladder stand assembly comprising a ladder stand and a fall arrest device arranged on a longitudinal bar of the ladder stand.
The embodiment of the invention has the beneficial effects that:
the support component is arranged on the longitudinal rod of the ladder stand, and the sliding mechanisms are movably arranged on two sides of the support component and can slide relative to the longitudinal rod of the ladder stand, so that the anti-falling device disclosed by the embodiment of the invention can slide on the ladder stand. Still be provided with locking mechanism on the bracket component, locking mechanism sets up between two slide mechanism, and locking mechanism includes the movable rod, and the movable rod is including being close to the first end of longitudinal rod to and the second end that deviates from the longitudinal rod, and the second is served and is provided with the locking ring that is used for locking safety to detain, can bind safety rope on the locking ring or with the locking of safety to detain on the locking ring. Be provided with the pin joint between first end and the second end, the movable rod passes through the pin joint with the bracket component and articulates to make the movable rod can rotate relative to the bracket component. When the operation personnel locks the safety rope or the safety buckle on the locking ring, if the operation personnel falls from the ladder stand, the movable rod where the locking ring is located is pulled towards the direction of the ground under the action of gravity, and the bracket assembly and the sliding mechanism under the action of inertia keep a static state with the ladder stand according to the old state. When the movable rod rotates to a designated area, the movable rod can be tightly attached to the longitudinal rod of the ladder stand and generates friction force to limit the movement of the sliding mechanism, so that the sliding mechanism and the ladder stand are relatively static, and the effect of preventing the operation and maintenance personnel from falling from the ladder stand is achieved. The anti-falling device provided by the embodiment of the invention can be used by arranging the anti-falling device on the crawling ladder without modifying the original crawling ladder, so that the effect of reducing the modification cost is achieved; in addition, the anti-falling device can slide on the ladder stand, so that the operation and maintenance personnel can always keep a connection relationship with the ladder stand, an unprotected state when a safety buckle or a safety rope is disassembled and installed on the ladder stand is avoided, and the effects of high safety and low operation difficulty are achieved; moreover, the safety rope or the safety buckle does not need to be disassembled and installed for many times, so that operation and maintenance personnel can concentrate on operation and maintenance construction work, and the working efficiency of the operation and maintenance personnel can be improved.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic structural diagram of a fall protection device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a fall-protection device according to another embodiment of the present invention.
Fig. 3 is a schematic partial structural view of a fall protection device according to an embodiment of the present invention.
Fig. 4 is a partial structural schematic view of a fall protection device according to another embodiment of the invention.
Fig. 5 is a partial structural schematic view of a fall protection device according to another embodiment of the invention.
Fig. 6 is a schematic structural diagram of a ladder assembly according to an embodiment of the present invention.
In the figure:
1. a fall arrest device; 11. a bracket assembly; 111. a first bracket; 112. a second bracket; 12. a sliding mechanism; 121. a first pulley; 122. a rotating shaft; 123. a fastener; 124. a second pulley; 13. a locking mechanism; 131. a movable rod; 1311. a first end; 1312. a second end; 1313. a locking ring; 1314. a hinge point; 1315. a rubber layer; 132. a link mechanism; 1321. a drive section; 13211. a drive contact; 13212. a reversing gear box; 1322. a bending section; 14. an adjustment mechanism; 15. a return spring;
200. climbing a ladder; 201. a longitudinal rod; 202. a transverse bar.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 and 6, the embodiment of the invention provides a fall protection device 1, which comprises a support assembly 11, at least one sliding mechanism 12 is movably arranged on two sides of the support assembly 11, the sliding mechanism 12 can slide relative to a longitudinal rod 201 of a ladder 200, a locking mechanism 13 is further arranged on the support assembly 11, the locking mechanism 13 is arranged between the two sliding mechanisms 12, the locking mechanism 13 comprises a movable rod 131, the movable rod 131 comprises a first end 1311 close to the longitudinal rod 201 and a second end 1312 far away from the longitudinal rod 201, a locking ring 1313 is arranged on the second end 1312, a hinge joint 1314 is arranged between the first end 1311 and the second end 1312, the movable rod 131 is hinged with the support assembly 11 through the hinge joint 1314 so that the movable rod 131 can rotate relative to the support assembly 11, and when the movable rod 131 rotates to a designated area, the sliding mechanism 12 and the ladder 200 are relatively static.
In the embodiment of the invention, the bracket assembly 11 is arranged on the longitudinal rod 201 of the ladder stand 200, at least one sliding mechanism 12 is movably arranged on two sides of the bracket assembly 11, and the sliding mechanism 12 can slide relative to the longitudinal rod 201 of the ladder stand 200, so that the anti-falling device 1 in the embodiment of the invention can slide on the ladder stand 200. The bracket assembly 11 is further provided with a locking mechanism 13, the locking mechanism 13 is arranged between the two sliding mechanisms 12, the locking mechanism 13 comprises a movable rod 131, the movable rod 131 comprises a first end 1311 close to the longitudinal rod 201 and a second end 1312 away from the longitudinal rod 201, the second end 1312 is provided with a locking ring 1313 for locking the safety catch, and the safety rope can be bound on the locking ring 1313 or the safety catch can be locked on the locking ring 1313. A hinge point 1314 is disposed between the first end 1311 and the second end 1312, and the movable rod 131 is hinged to the bracket assembly 11 through the hinge point 1314, so that the movable rod 131 can rotate relative to the bracket assembly 11. When the maintenance person locks the safety line or the safety catch on the locking ring 1313, if the maintenance person falls from the ladder 200, the movable rod 131 on which the locking ring 1313 is located will be pulled towards the ground under the action of gravity, and the bracket assembly 11 and the sliding mechanism 12 under the action of inertia will remain stationary with the ladder 200. When the movable rod 131 is rotated to a predetermined area, the movable rod 131 can be closely attached to the longitudinal rod 201 of the ladder 200 to generate a frictional force to restrict the movement of the sliding mechanism 12, so that the sliding mechanism 12 and the ladder 200 are relatively stationary, thereby preventing the maintenance worker from falling from the ladder 200. The anti-falling device 1 provided by the embodiment of the invention can be used by arranging the anti-falling device 1 on the ladder stand 200 without modifying the original ladder stand 200, so that the effect of reducing the modification cost is achieved; in addition, the anti-falling device 1 can slide on the ladder stand 200, so that the operation and maintenance personnel can always keep a connection relationship with the ladder stand 200, the unprotected state when a safety buckle or a safety rope is disassembled and installed on the ladder stand 200 is avoided, and the effects of high safety and low operation difficulty are achieved; moreover, the safety rope or the safety buckle does not need to be disassembled and installed for many times, so that operation and maintenance personnel can concentrate on operation and maintenance construction work, and the working efficiency of the operation and maintenance personnel can be improved.
In one embodiment, referring to fig. 2, the locking mechanism 13 further comprises a linkage mechanism 132 movably disposed on the bracket assembly 11, the linkage mechanism 132 comprises an actuating portion 1321 fixedly connected to the hinge point 1314, and a bent portion 1322 connected to the actuating portion 1321, the bent portion 1322 and the transverse bar 202 of the ladder stand 200 are located on the same side of the longitudinal bar 201. When the user is out of the ladder stand 200 due to a loss of the foot and the user is out of the ladder stand 200, the movable rod 131 is pulled toward the ground by gravity, and the movable rod 131 rotates to drive the driving portion 1321 to rotate to drive the bent portion 1322 to rotate, for example, to rotate from a position parallel to the transverse rod 202 to a position intersecting with the transverse rod 202, so that the bent portion 1322 is hooked on the transverse rod 202 of the ladder stand 200, and the safety of the anti-falling device 1 according to the embodiment of the present invention is enhanced by the limit blocking effect of the transverse rod 202 and the rotated bent portion 1322.
Further, with continued reference to fig. 1 and 2, the driving portion 1321 includes a driving contact 13211 and a reversing gear box 13212, the reversing gear box 13212 is fixedly connected to the bracket assembly 11, the driving contact 13211 is connected to an input shaft of the reversing gear box 13212, an output shaft of the reversing gear box 13212 is connected to the bent portion 1322, and the hinge point 1314 abuts against the driving contact 13211. When the movable rod 131 rotates to a predetermined area, the driving contact 13211 drives the reversing gear box 13212 to move, the kinetic energy of the movable rod 131 is transmitted through the driving contact 13211, the kinetic energy is transmitted through the reversing gear box 13212, and the bent portion 1322 is rotated to rotate, so that the bent portion 1322 is rotated to be hooked on the transverse rod 202 of the ladder stand 200.
In particular, with continued reference to FIG. 3, the reversing gear box 13212 may be formed of a plurality of bevel gears in series to transmit kinetic energy and change the direction of the transmission through the bevel gears.
In another embodiment, referring to fig. 4, the sliding mechanism 12 includes a first pulley 121, a rotating shaft 122 and a fastening member 123, the rotating shaft 122 is disposed on a shaft portion of the first pulley 121, the first pulley 121 can rotate relative to the rotating shaft 122, the rotating shaft 122 is fixedly disposed with the fastening member 123, and the fastening member 123 is fixedly disposed with the bracket assembly 11. The first pulley 121 is fixed on the bracket assembly 11 through the rotating shaft 122 and the fastening member 123, and since the first pulley 121 can rotate relative to the rotating shaft 122, the anti-falling device 1 of the embodiment of the invention can be ensured to slide smoothly on the longitudinal rod 201 of the ladder stand 200. The fastener 123 of the present embodiment may be a bolt assembly, or may be a welded part.
In particular, referring to fig. 1, the sliding mechanism 12 further includes a second pulley 124, the second pulley 124 is movably disposed on the bracket assembly 11, and the second pulley 124 can directly contact the longitudinal rod 201 of the ladder stand 200, and the first pulley 121 disposed on the rotating shaft 122 can provide more stable support for the longitudinal rod 201, and also improve the sliding fluency.
Preferably, referring to fig. 4, the radial side of the first pulley 121 is provided with a groove corresponding to the profile of the longitudinal rod 201, and the groove can limit the first pulley 121 to be separated from the longitudinal rod 201, so as to ensure the action stability of the anti-falling device 1 according to the embodiment of the present invention, and also improve the safety. Similarly, the second pulley 124 may also be provided with a groove corresponding to the profile of the longitudinal rod 201, and the achieved effect is the same as the effect of the groove on the first pulley 121, which is not described in detail in this embodiment.
In another embodiment, referring to fig. 1, the bracket assembly 11 includes at least a first bracket 111 and a second bracket 112, and the sliding mechanism 12 is disposed on the first bracket 111 and the second bracket 112, respectively, and between the first bracket 111 and the second bracket 112. The first bracket 111 and the second bracket 112 are used for forming the bracket assembly 11, so that the assembly of the bracket assembly 11 can be facilitated, and the sliding mechanisms 12 are arranged on the first bracket 111 and the second bracket 112 and between the first bracket 111 and the second bracket 112, so that the connection stability of the sliding mechanisms 12 to the anti-falling device 1 of the embodiment of the invention can be improved by providing different angle limit positions for the longitudinal rod 201.
Preferably, referring to fig. 1, an adjusting mechanism 14 is disposed between the first bracket 111 and the second bracket 112, and the adjusting mechanism 14 can adjust a distance between the first bracket 111 and the second bracket 112. By adjusting the distance between the first bracket 111 and the second bracket 112, the longitudinal rods 201 of the ladder stand 200 with different sizes can be adapted, so that the sliding mechanisms 12 on the first bracket 111 and the second bracket 112 can be more attached to the longitudinal rods 201 of the ladder stand 200, and the connection stability of the sliding mechanisms 12 to the anti-falling device 1 of the embodiment of the invention is further improved.
More preferably, the adjusting mechanism 14 may be a combination of a threaded rod and a threaded sleeve, and by rotating the threaded rod, the relative distance between the threaded rod and the threaded sleeve can be adjusted, thereby implementing the distance adjusting function of the adjusting mechanism 14.
In addition, referring to fig. 3, a rubber layer 1315 may be provided on the side of the first end 1311 close to the ladder 200, and the rubber layer 1315 may increase the friction coefficient between the movable rod 131 and the longitudinal rod 201 of the ladder 200, thereby increasing the braking effect between the movable rod 131 and the longitudinal rod 201.
In particular, referring to fig. 5, a return spring 15 is disposed between the movable rod 131 and the bracket assembly 11, the return spring 15 always has a tendency to drive the first end 1311 of the movable rod 131 away from the longitudinal rod 201 of the ladder 200, the return spring 15 is disposed to assist the movable rod 131 to return to the original state, and when the maintenance worker returns to the ladder 200 again, the driving force for pulling the movable rod 131 to return to the original state can be reduced by the return spring 15, so that the worker can continue to work or quickly fall to the ground for rescue.
The position of the return spring 15 between the movable rod 131 and the bracket assembly 11 may be various, for example, the return spring 15 may be disposed between the first end 1311 and the bracket assembly 11, or the return spring 15 may be disposed between the second end 1312 and the bracket assembly 11, or the return spring 15 may be disposed between the first end 1311 and the bracket assembly 11 and between the second end 1312 and the bracket assembly 11. The return spring 15 is arranged at different positions, so that the structural space of the anti-falling device 1 provided by the embodiment of the invention can be utilized to the maximum.
Referring to fig. 6, the embodiment of the invention also provides a ladder assembly, which comprises a ladder 200 and the anti-falling device 1 of the above embodiment, wherein the anti-falling device 1 is arranged on a longitudinal rod 201 of the ladder 200. The anti-falling device 1 in this embodiment may have the same structure and achieve the same effect as the anti-falling device 1 in the above embodiment, and details are not described in this embodiment.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or a positional relationship based on the orientation shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a fall protection device, its characterized in that includes the bracket component, the both sides activity at least of bracket component is provided with a sliding mechanism, sliding mechanism can slide the longitudinal rod of cat ladder relatively, still be provided with locking mechanism on the bracket component, locking mechanism sets up two between the sliding mechanism, locking mechanism includes the movable rod, the movable rod is including being close to the first end of longitudinal rod, and deviate from the second end of longitudinal rod, the second is served and is provided with the locking ring, first end with be provided with the pin joint between the second end, the movable rod with the bracket component passes through the pin joint is articulated, so that the movable rod can be relative the bracket component rotates when the movable rod rotates appointed region, sliding mechanism with the cat ladder is static relatively.
2. The device of claim 1, wherein the locking mechanism further comprises a linkage mechanism movably disposed on the bracket assembly, the linkage mechanism comprises a driving portion fixedly connected to the hinge point, and a bending portion connected to the driving portion, the bending portion and the transverse rod of the ladder stand are located on the same side of the longitudinal rod, and when the movable rod rotates to a designated area, the driving portion can drive the bending portion to rotate, so that the bending portion is hooked on the transverse rod of the ladder stand.
3. The fall arrest device according to claim 2, wherein the drive means comprises a drive contact and a reversing gear box, the reversing gear box is fixedly connected to the support assembly, the drive contact is connected to an input shaft of the reversing gear box, an output shaft of the reversing gear box is connected to the bend, and the hinge point is fixedly connected to the drive contact, and when the movable lever is rotated to a designated area, the drive contact drives the reversing gear box to rotate the bend to be hooked on the transverse lever of the ladder.
4. The device of claim 1 wherein the sliding mechanism comprises a first pulley, a shaft and a fastener, the shaft is disposed on a shaft of the first pulley, the first pulley is rotatable relative to the shaft, the shaft is fixedly disposed with the fastener, and the fastener is fixedly disposed with the bracket assembly.
5. The device of claim 4 wherein the radial side of the first pulley is provided with a groove corresponding to the profile of the longitudinal rod.
6. The device of claim 1 wherein the bracket assembly comprises at least a first bracket and a second bracket, the sliding mechanism being disposed on and between the first bracket and the second bracket, respectively.
7. The device of claim 6 wherein an adjustment mechanism is disposed between the first bracket and the second bracket, the adjustment mechanism being capable of adjusting the distance between the first bracket and the second bracket.
8. The device of claim 1 wherein a rubber layer is provided on a side of the first end adjacent the ladder.
9. The device of claim 1 wherein a return spring is disposed between the movable bar and the bracket assembly, the return spring always having a tendency to urge the first end away from the longitudinal bar.
10. A ladder assembly comprising a ladder and a fall arrest device as claimed in any one of claims 1 to 9 provided on a longitudinal bar of the ladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010732337.7A CN111852315A (en) | 2020-07-27 | 2020-07-27 | Anti-falling device and ladder stand assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010732337.7A CN111852315A (en) | 2020-07-27 | 2020-07-27 | Anti-falling device and ladder stand assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111852315A true CN111852315A (en) | 2020-10-30 |
Family
ID=72947526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010732337.7A Pending CN111852315A (en) | 2020-07-27 | 2020-07-27 | Anti-falling device and ladder stand assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202408A (en) * | 2021-06-21 | 2021-08-03 | 华侨大学 | Brake mechanism and movable anti-falling device for ladder stand |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272782A1 (en) * | 1986-11-14 | 1988-06-29 | Latchways Limited | Self-locking cable grip |
| FR2617050A1 (en) * | 1987-06-23 | 1988-12-30 | Protecta International | Fall-prevention safety device sliding on a vertical or horizontal safety support |
| CN200991517Y (en) * | 2007-01-24 | 2007-12-19 | 盛春元 | Altitude-operation slide-rail type anti-drop device |
| CN106761371A (en) * | 2016-11-25 | 2017-05-31 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of fall protection equipment of cat ladder work high above the ground |
| CN208877757U (en) * | 2018-09-26 | 2019-05-21 | 河南宏泰电力装备有限公司 | A kind of fall-preventing self-locking device |
-
2020
- 2020-07-27 CN CN202010732337.7A patent/CN111852315A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272782A1 (en) * | 1986-11-14 | 1988-06-29 | Latchways Limited | Self-locking cable grip |
| FR2617050A1 (en) * | 1987-06-23 | 1988-12-30 | Protecta International | Fall-prevention safety device sliding on a vertical or horizontal safety support |
| CN200991517Y (en) * | 2007-01-24 | 2007-12-19 | 盛春元 | Altitude-operation slide-rail type anti-drop device |
| CN106761371A (en) * | 2016-11-25 | 2017-05-31 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of fall protection equipment of cat ladder work high above the ground |
| CN208877757U (en) * | 2018-09-26 | 2019-05-21 | 河南宏泰电力装备有限公司 | A kind of fall-preventing self-locking device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202408A (en) * | 2021-06-21 | 2021-08-03 | 华侨大学 | Brake mechanism and movable anti-falling device for ladder stand |
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Application publication date: 20201030 |