Attached lifting scaffold
By introducing a double anti-fall limit braking system of a rotary wheel-type fall-proof and a limit-mounted fall-proof in the attached lifting scaffold, the problem of insufficient safety performance in the prior art is solved, and the scaffolding is reliable to stop falling under extreme conditions and improve safety.
Patent Information
- Application Number
- CN202422255992.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing anti-falling device of attached lift scaffolding has low safety performance, especially in heavy loads and complex working conditions, which cannot provide sufficient safety.
The double anti-fall limit braking system with a rotary wheel type fall-proof and a limit-mounted anti-fall preventer is enhanced by the engagement of the anti-fall limit slot and the limit rod on the guide rail.
Under extreme conditions, the scaffolding can be reliably stopped from falling, improving safety performance and ensuring the safety of construction workers.
Smart Images
Figure CN223048423U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building engineering construction, in particular to an attached lifting scaffold. Background Art
[0002] The attached lifting scaffold is a scaffold used in high-rise building construction. It can be gradually lifted as the building rises. This scaffold has the advantages of reasonable structure, simple operation, safety and reliability, and is widely used in high-rise buildings, bridges and other projects. The attached lifting scaffold mainly consists of a frame system, an attached guide, a load-unloading and anti-falling system, a power lifting system, an intelligent ultra-potential alarm system and a construction protection system.
[0003] Since the attached lifting scaffold is attached to the facade of the building, the anti-falling device of the existing attached lifting scaffold is mainly a rotary wheel anti-falling device, which is mainly composed of a base, a trigger gear and a brake pawl. When the frame is lifted normally, the lifting lever on the guide rail meshes with the trigger gear, so that the trigger gear rotates continuously, and the brake pawl meshes with the trigger gear intermittently. After rotation, the brake is reset under the action of the balancing weight. When the scaffold falls rapidly, the trigger gear is continuously toggled and is not returned to the position, and the brake pawl is restricted by the limit block and stops moving. However, due to the heavy weight of the attached lifting scaffold, only a single brake pawl and a trigger gear limit block are used to limit and prevent falling, which has low safety performance and cannot provide sufficient safety under heavy loads and complex working conditions. Utility Model Content
[0004] The purpose of the utility model is to provide an attached lifting scaffold to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An attached lifting scaffold comprises a guide rail, a rotary wheel anti-fall device and a limit clamping anti-fall device connected to the rotary wheel anti-fall device, wherein the guide rail is connected to a frame of the attached lifting scaffold, the guide rail is arranged in a vertical I-shaped structure, and anti-fall limit clamping grooves are evenly and vertically opened on the guide rail;
[0007] The limit clamping type anti-falling device is located in front of the guide rail above the rotary anti-falling device. The limit clamping type anti-falling device includes a fixed seat and a limit rod. The fixed seat is connected to a steel bar embedded part inside the building wall on one side of the guide rail. The limit rod is in an I-shaped structure and is parallel to one side of the guide rail. The lower part of the limit rod is connected to the fixed seat through a rotating shaft. A clamping limit pawl that is clamped and connected to the anti-falling limit card slot is arranged on one side of the top of the limit rod close to the guide rail. A first clamping limit shaft is arranged on one side below the limit rod inside the fixed seat, and a second clamping limit shaft is arranged on the outer wall of the other side close to the lower part of the limit rod inside the fixed seat.
[0008] As a preferred solution of the present utility model, the rotary anti-falling device includes a machine base, a trigger gear, a braking limit pawl and a self-resetting component. The machine base is connected to a steel bar embedded part inside the building wall through a fixing bolt. The trigger gear is connected to the machine base through a rotating shaft. The braking limit pawl is located on one side of the top of the trigger gear. The braking limit pawl is connected to the machine base through a rotating shaft. A braking limit shaft is arranged on the side of the braking limit pawl away from the guide rail. The braking limit shaft is movably connected to the outer wall of the braking limit pawl, and the braking limit shaft is fixedly connected to the machine base on one side of the braking limit pawl. A anti-falling limit dial is arranged on the top of the side of the braking limit pawl away from the braking limit shaft.
[0009] As a preferred solution of the present utility model, the bottom of the limit rod is located on one side of the anti-falling limit dial at the top of the braking limit pawl. When the attached lifting scaffold falls rapidly, the outer wall of the anti-falling limit dial abuts against the outer wall of the lower part of the limit rod.
[0010] As a preferred solution of the present utility model, the self-resetting component includes a reset spring and a connecting rod. The connecting rod is connected to the machine base. One end of the reset spring is connected to the connecting rod, and the other end of the reset spring is connected to the top of the side of the braking limit pawl away from the anti-falling limit dial close to the end.
[0011] As a preferred solution of the present utility model, when the trigger gear rotates intermittently normally, it is meshed and connected with the braking limit pawl.
[0012] As a preferred solution of the present utility model, the trigger gear is clamped and connected with the anti-falling limit card slot.
[0013] Compared with the prior art, the beneficial effects of the present utility model are:
[0014] In response to the problems raised in the background art, this application sets a rotary anti-falling device and a limit clamping type anti-falling device that is triggered and linked with the rotary anti-falling device for double anti-falling limit braking, with high safety performance and providing sufficient safety.
[0015] A double fall arrester structure is used to form an enhanced safety net, providing higher safety performance and ensuring that the scaffold can be reliably stopped from falling even under extreme conditions. All major components can be kept in the best condition through simple inspection and maintenance, ensuring the long-term operation and reliability of the safety device.
[0016] When the attached lifting scaffold is normally lifted and lowered, the trigger gear is meshed with the brake limit pawl and the anti-fall limit slot, and the limit rod is in a vertical state, so that the trigger gear rotates continuously, and the trigger gear and the brake limit pawl are intermittently meshed and rotated forward or reversely. The brake limit pawl is automatically reset under the action of the reset spring;
[0017] When the attached lifting scaffolding falls rapidly, the trigger gear continuously drives the brake limit pawl in the non-returned state to rotate in the opposite direction. When the trigger gear drives the brake limit pawl to rotate in the opposite direction, the anti-fall limit dial plate follows the movement of the brake limit pawl to drive the bottom of the limit rod to move to one side. At this time, the outer wall of the bottom of the limit rod abuts against the second engaging limit shaft. At this time, the engaging limit pawl at the top of the limit rod moves toward the anti-fall limit slot, and the engaging limit pawl engages with the inside of the anti-fall limit slot. The trigger gear is limited by the brake limit pawl and stops rotating when the anti-fall limit slot falls on the trigger gear, thereby preventing the frame from falling. The double anti-fall limit braking has high safety performance and ensures the safety of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 3 It is a schematic diagram of the guide rail and the rotary wheel type fall arrester and the limit clamping type fall arrester of the utility model;
[0021] Figure 4 It is a side view of the limit rod of the utility model;
[0022] Figure 5 For this utility model Figure 2 Enlarged view of area A in the middle.
[0023] In the figure: 1. guide rail; 11. anti-fall limit slot; 2. rotary wheel anti-fall device; 21. machine base; 22. trigger gear; 23. brake limit pawl; 231. brake limit shaft; 232. anti-fall limit dial plate; 3. limit snap-fit anti-fall device; 31. fixed base; 32. limit rod; 321. first snap-fit limit shaft; 322. second snap-fit limit shaft; 33. snap-fit limit pawl; 24. reset spring; 241. connecting rod. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Example
[0025] See also Figures 1 - 5 The utility model provides a technical solution: an attached lifting scaffold, comprising a guide rail 1, a rotary wheel anti-fall device 2 and a limit clamping anti-fall device 3 connected to the rotary wheel anti-fall device 2, the guide rail 1 is connected to the attached lifting scaffold frame, the guide rail 1 is arranged in a vertical I-shaped structure, and the guide rail 1 is evenly and vertically provided with anti-fall limit clamping grooves 11; the limit clamping anti-fall device 3 is located at the front side of the guide rail 1 above the rotary wheel anti-fall device 2, the limit clamping anti-fall device 3 includes a fixed seat 31 and a limit rod 32, the fixed seat 31 and the guide rail 1 is connected to the embedded steel bar inside the building wall on one side, the limit rod 32 is in an I-shaped structure and is located parallel to one side of the guide rail 1, the limit rod 32 is connected to the fixing seat 31 through a rotating shaft at the bottom, and a clamping limit pawl 33 that is clamped and connected to the anti-fall limit slot 11 is provided on the top of the limit rod 32 near the guide rail 1, a first clamping limit shaft 321 is provided on one side below the limit rod 32 inside the fixing seat 31, and a second clamping limit shaft 322 is provided on the outer wall on the other side of the fixing seat 31 close to the bottom of the limit rod 32.
[0026] It should be noted that, in this embodiment, during the normal lifting process, the trigger gear 22 is meshed with the brake limit pawl 23 and the anti-fall limit slot 11 to maintain the stability of the structure. At this time, the limit rod 32 is in a vertical state, and the trigger gear 22 continues to rotate and intermittently meshes with the brake limit pawl 23, and the lifting action is achieved by forward or reverse rotation. The brake limit pawl 23 is automatically reset under the action of the reset spring 24 to maintain the safe operation of the machine;
[0027] The limit rod 32 does not interfere with the operation of the trigger gear 22 and the brake limit pawl 23 in a normal state, and maintains a vertical state, thereby ensuring the smooth lifting of the scaffold;
[0028] When the scaffold falls rapidly, the trigger gear 22 continuously drives the brake limit pawl 23 that has not returned to its position to rotate in the opposite direction. In this emergency situation, the action of the trigger gear 22 drives the brake limit pawl 23, the anti-fall limit plate 232 and the bottom of the limit rod 32 to move to one side, starting the emergency braking process.
[0029] The braking effect of the anti-falling limit card slot 11 and the engaging limit pawl 33. In an emergency, the engaging limit pawl 33 at the 32nd part of the limit rod moves into the anti-falling limit card slot 11 and engages with it. It cooperates with the trigger gear 22 and is restricted by the braking limit pawl 23 to stop rotating. This mechanism takes effect immediately, locks the trigger gear 22, thus preventing the continued falling of the frame body and ensuring the safety of personnel;
[0030] Furthermore, a first engaging limit shaft 321 is provided on one side below the limit rod 32 inside the fixed seat 31, and a second engaging limit shaft 322 is provided on the outer wall on the other side close to the lower part of the limit rod 32 inside the fixed seat 31. The second engaging limit shaft 322 is in close contact with the outer wall below the limit rod 32. The first engaging limit shaft 321 is located on the other side far from the lower part of the limit rod 32 and does not contact the limit rod 32. The running distance of the limit rod 32 is limited by the distance between the second engaging limit shaft 322 and the first engaging limit shaft 321, ensuring that when the movement of the trigger gear 22 drives the braking limit pawl 23, the anti-falling limit dial 232 and the bottom of the limit rod 32 move to one side, the engaging limit pawl 33 corresponds to the position of the anti-falling limit card slot 11.
[0031] Please refer to Figure 2 、 3 and 5, the rotary anti-falling device 2 includes a machine base 21, a trigger gear 22, a braking limit pawl 23 and a self-resetting component. The machine base 21 is connected to the steel bar embedded part inside the building wall through a fixing bolt. The trigger gear 22 is connected to the machine base 21 through a rotating shaft. The braking limit pawl 23 is located on one side at the top of the trigger gear 22. The braking limit pawl 23 is connected to the machine base 21 through a rotating shaft. A braking limit shaft 231 is provided on the side of the braking limit pawl 23 away from the guide rail 1. The braking limit shaft 231 is movably connected to the outer wall of the braking limit pawl 23. The braking limit shaft 231 is fixedly connected to the machine base 21 on one side of the braking limit pawl 23. An anti-falling limit dial 232 is provided at the top on the side of the braking limit pawl 23 away from the braking limit shaft 231; the bottom of the limit rod 32 is located on one side of the anti-falling limit dial 232 at the top of the braking limit pawl 23. When the attached lifting scaffold falls rapidly, the outer wall of the anti-falling limit dial 232 abuts against the outer wall below the limit rod 32; the self-resetting component includes a reset spring 24 and a connecting rod 241. The connecting rod 241 is connected to the machine base 21. One end of the reset spring 24 is connected to the connecting rod 241, and the other end of the reset spring 24 is connected to the top near the end on the side of the braking limit pawl 23 away from the anti-falling limit dial 232; when the trigger gear 22 rotates intermittently normally, it is meshed and connected with the braking limit pawl 23; the trigger gear 22 is engaged and connected with the anti-falling limit card slot 11.
[0032] It should be noted that, in this embodiment, during the normal lifting process, the trigger gear 22 is meshed with the brake limit pawl 23 and the anti-fall limit slot 11 to maintain the stability of the structure. At this time, the limit rod 32 is in a vertical state, and the trigger gear 22 continues to rotate and intermittently meshes with the brake limit pawl 23, and the lifting action is achieved by forward or reverse rotation. The brake limit pawl 23 is automatically reset under the action of the reset spring 24 to maintain the safe operation of the machine;
[0033] When the attached lifting scaffold falls rapidly, the trigger gear 22 continuously drives the brake limit pawl 23 in the non-returning state to rotate in the opposite direction. When the trigger gear 22 drives the brake limit pawl 23 to rotate in the opposite direction, the anti-fall limit dial plate 232 follows the movement of the brake limit pawl 23 to drive the bottom of the limit rod 32 to move to one side. At this time, the outer wall of the bottom of the limit rod 32 abuts against the second engaging limit shaft 322. At this time, the engaging limit pawl 33 at the top of the limit rod 32 moves toward the anti-fall limit slot 11, and the engaging limit pawl 33 engages with the inside of the anti-fall limit slot 11. The trigger gear 22 is limited by the brake limit pawl 23 and stops rotating when the anti-fall limit slot 11 falls on the trigger gear 22, thereby preventing the frame from falling. The double anti-fall limit braking has high safety performance and ensures the safety of construction workers.
[0034] The utility model workflow:
[0035] When in use, during the normal lifting process, the trigger gear 22 engages with the brake limit pawl 23 and the anti-fall limit slot 11 to maintain the stability of the structure. At this time, the limit rod 32 is in a vertical state, and the trigger gear 22 continues to rotate and intermittently engages with the brake limit pawl 23. The lifting action is achieved by forward or reverse rotation. The brake limit pawl 23 automatically resets under the action of the reset spring 24 to maintain the safe operation of the machine.
[0036] When the attached lifting scaffold falls rapidly, the trigger gear 22 continuously drives the brake limit pawl 23 in the non-returning state to rotate in the opposite direction. When the trigger gear 22 drives the brake limit pawl 23 to rotate in the opposite direction, the anti-fall limit dial plate 232 follows the movement of the brake limit pawl 23 to drive the bottom of the limit rod 32 to move to one side. At this time, the outer wall of the bottom of the limit rod 32 abuts against the second engaging limit shaft 322. At this time, the engaging limit pawl 33 at the top of the limit rod 32 moves toward the anti-fall limit slot 11, and the engaging limit pawl 33 engages with the inside of the anti-fall limit slot 11. The trigger gear 22 is limited by the brake limit pawl 23 and stops rotating when the anti-fall limit slot 11 falls on the trigger gear 22, thereby preventing the frame from falling. The double anti-fall limit braking has high safety performance and ensures the safety of construction workers.
[0037] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. An attached lifting scaffold, comprising a guide rail (1), a rotary wheel type fall arrester (2) and a position limiting snap-fit fall arrester (3) connected to the rotary wheel type fall arrester (2), characterized in that: The guide rail (1) is connected to the attached lifting scaffold frame, the guide rail (1) is arranged in a vertical I-shaped structure, and the guide rail (1) is evenly and vertically provided with anti-fall limit slots (11); The position-limiting snap-fitting fall arrester (3) is located on the front side of the guide rail (1) above the rotary wheel fall arrester (2). The position-limiting snap-fitting fall arrester (3) comprises a fixing seat (31) and a limiting rod (32). The fixing seat (31) is connected to a steel bar embedded part inside a building wall on one side of the guide rail (1). The limiting rod (32) is in an I-shaped structure and is located parallel to one side of the guide rail (1). The lower side of the limiting rod (32) is connected to the fixing seat (31) through a rotating shaft. The fixing seat (31) is connected to the fixing seat (31), a locking limit pawl (33) is provided on the top of the limit rod (32) close to the guide rail (1) and is connected to the anti-fall limit slot (11), a first locking limit shaft (321) is provided on one side below the limit rod (32) inside the fixing seat (31), and a second locking limit shaft (322) is provided on the other side of the outer wall of the fixing seat (31) close to the limit rod (32); The rotary wheel fall arrester (2) comprises a base (21), a trigger gear (22), a brake limit pawl (23) and a self-resetting assembly, wherein the base (21) is connected to a steel bar embedded part inside a building wall via a fixing bolt, the trigger gear (22) is connected to the base (21) via a rotating shaft, the brake limit pawl (23) is located on one side of the top of the trigger gear (22), and the brake limit pawl (23) is connected to the base (21) via a rotating shaft. The brake limit pawl (23) is connected to the guide rail (1), a brake limit shaft (231) is arranged on the side of the brake limit pawl (23) away from the guide rail (1), the brake limit shaft (231) is movably connected to the outer wall of the brake limit pawl (23), the brake limit shaft (231) is fixedly connected to the machine base (21) on one side of the brake limit pawl (23), and an anti-fall limit dial plate (232) is arranged on the top of the side of the brake limit pawl (23) away from the brake limit shaft (231).
2. The attached lifting scaffold according to claim 1, characterized in that: The bottom of the limit rod (32) is located on one side of the anti-fall limit plate (232) at the top of the brake limit pawl (23), and when the attached lifting scaffold falls rapidly, the outer wall of the anti-fall limit plate (232) abuts against the outer wall below the limit rod (32).
3. The attached lifting scaffold according to claim 1, characterized in that: The self-resetting component comprises a reset spring (24) and a connecting rod (241), wherein the connecting rod (241) is connected to the machine base (21), one end of the reset spring (24) is connected to the connecting rod (241), and the other end of the reset spring (24) is connected to the top of the braking limit pawl (23) away from the anti-fall limit dial plate (232) near the end.
4. The attached lifting scaffold according to claim 1, characterized in that: The trigger gear (22) is meshed and connected with the brake limit pawl (23) when it rotates indirectly normally.
5. The attached lifting scaffold according to claim 1, characterized in that: The trigger gear (22) is engaged and connected with the anti-fall limit slot (11).