Overload alarm system for construction cantilever platform
By designing an overload alarm system on the cantilever platform and utilizing the mechanical structure of the flip bar and counterweight to achieve overload warning, the problem of intuitive load control on the cantilever platform is solved, and construction safety is improved.
Patent Information
- Application Number
- CN202520456354.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-17
AI Technical Summary
In construction, the load control of cantilever platforms mainly relies on signs, which makes it difficult for workers to visually determine whether they are overloaded, leading to safety hazards.
Design an overload alarm system for a cantilever construction platform. By using a flip bar and a counterweight, the warning sign will rotate significantly when overloaded, providing a clear overload warning.
This effectively prevents safety accidents, reduces economic losses, and ensures the safe use of cantilever platforms.
Smart Images
Figure CN223871116U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction safety management technology, specifically to an overload alarm system for a cantilevered construction platform. Background Technology
[0002] With the development of society and the economy, the requirements for construction safety are getting higher and higher. In construction, cantilever platforms are the main tools for vertical transportation of materials such as steel pipes and timber. At present, in practical applications, the load control is mostly done by placing a maximum load sign in the visible part of the platform. Workers cannot intuitively know whether the platform is overloaded when using the platform to transport materials, which poses a major safety hazard to the platform. Utility Model Content
[0003] To address the aforementioned issues, this invention proposes an overload alarm system for a cantilever construction platform. This system triggers an alarm upon overload, providing a clear warning to platform users and ensuring the safe use of the cantilever platform.
[0004] An overload alarm system for a cantilevered construction platform includes a flapping rod, which is rotatably mounted on the side of the cantilevered platform. A warning sign sticker is provided at the right end of the flapping rod, and a counterweight is provided at the left end of the flapping rod. A flapping rod limiting ring is provided above the cantilevered platform and slides horizontally with the counterweight. The flapping rod limiting ring is connected to the cantilevered part at the right end of the cantilevered platform.
[0005] Preferably, a support beam is provided above the cantilever platform, and the tilting rod is rotatably mounted on the side of the support beam.
[0006] Preferably, a horizontally arranged guide sleeve is installed above the support beam, and a traction rod is slidably connected inside the guide sleeve. The tilting rod limiting ring is installed on the side of the traction rod, and the right end of the traction rod is connected to the cantilevered part at the right end of the cantilever platform.
[0007] Preferably, a pulley is installed at the right end of the support beam, and a steel wire rope is connected to the right end of the traction rod. The steel wire rope passes around the pulley and is connected to the cantilevered part at the right end of the cantilever platform.
[0008] Preferably, a limiting screw is installed on the side of the traction rod, and a limiting groove that mates with the limiting screw is provided on the right side of the guide sleeve.
[0009] Preferably, a return spring is connected to the left end of the guide sleeve, and the return spring is connected to the support beam.
[0010] Preferably, a limiting rod sleeve is connected above the counterweight, and an adjustable limiting rod is installed inside the limiting rod sleeve. The limiting rod is slidably connected to the flip rod limiting ring.
[0011] Preferably, the support beam is provided with a limiting block on its side to limit the rotation angle of the flip arm.
[0012] Preferably, there is a gap of a set distance between the support beam and the cantilever platform.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This device is slidably connected to the limit rod and the flip rod limit ring. When the platform is overloaded, the limit rod can slide out of the flip rod limit ring. The flip rod rotates 90 degrees under the action of the counterweight. The warning sign sticker board quickly rotates from the right end of the cantilever platform to the top of the cantilever platform. The overload warning is eye-catching and prominent, avoiding the occurrence of safety accidents and reducing the economic losses caused by safety accidents.
[0015] 2. This device has a wide range of applications and can be used for load control of most cantilever tools. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a structural schematic diagram of the present invention under normal load conditions;
[0018] Figure 2 yes Figure 1 Enlarged view of A in the middle;
[0019] Figure 3 yes Figure 1 Enlarged view of B in the middle;
[0020] Figure 4 This is a structural schematic diagram of the present invention under overload alarm conditions;
[0021] Figure 5 yes Figure 4 Enlarged view of C;
[0022] In the diagram, 1. Cantilever platform, 2. Cantilever main beam, 3. Support beam, 4. Counterweight, 5. Tilting rod, 6. Warning sign sticker board, 7. Bolt shaft, 8. Limiting block, 9. Connecting plate, 10. Return spring, 11. Traction rod, 12. Limiting screw, 13. Guide sleeve, 14. Wire rope, 15. Pulley, 16. Limiting rod, 17. Tilting rod limiting ring, 18. Limiting rod sleeve. Detailed Implementation
[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0024] like Figure 1-5 As shown, this utility model discloses an overload alarm system for a cantilever construction platform. The system includes three main parts: first, the part related to the support beam 3; second, the part related to the overload warning lever 5; and third, the part of the wire rope 14 and the traction rod 11.
[0025] The support beam 3 is made of square tubing, and its length is determined according to the length of the cantilever main beams 2 on both the front and rear sides of the cantilever platform 1. The support beam 3 is connected to the cantilever main beam 2 with bolts. A pad is placed at the bolt connection point to ensure a certain gap between the support beam 3 and the cantilever main beam 2. This gap is maintained to ensure that the straightness of the support beam 3 is not affected when the right end of the cantilever main beam 2 sags under stress. A pulley 15 is installed at the right end of the support beam 3. The right end of the wire rope 14 is connected to the bottom of the cantilever main beam 2, passes over the pulley 15, changes direction, and extends to the left to connect with the corresponding mechanism. The pulley 15 and the wire rope 14 cooperate to transmit the vertical displacement of the right end of the cantilever main beam 2. A connecting plate 9 is welded to the outer side of the support beam 3. A limiting block 8 is welded to the connecting plate 9 to limit the excessive rotation of the tilting rod 5.
[0026] The tilting lever 5 is rotatably mounted on the side of the support beam 3 via bolt shaft 7, and is normally in a horizontal state parallel to the support beam 3. The bolt shaft should be tightened appropriately to ensure that the tilting lever can rotate freely. The right end of the tilting lever 5 is connected to the warning label sticker 6, and the left end of the tilting lever 5 is connected to the counterweight 4. The weight of the counterweight 4 is set so that the tilting lever 5 can be quickly erected when the alarm is triggered. A limit rod sleeve 18 is connected to the upper end of the counterweight 4. The limit rod sleeve 18 is made of steel pipe, and the limit rod 16 passes through the limit rod sleeve 18 and is fixed at both ends with bolts.
[0027] A guide sleeve bracket is welded above the support beam 3. The guide sleeve 13 is installed inside the guide sleeve bracket. A traction rod 11 is coaxially slidably connected inside the guide sleeve 13. The traction rod 11 extends to the right and protrudes from the right end of the guide sleeve 13. A flip-rod limiting ring 17 is installed on its side. The right end of the limiting rod 16 is inserted into the limiting ring 17 from left to right. Connecting rings are provided at both ends of the traction rod 11. The connecting ring at the right end is connected to the wire rope 14, and the connecting ring at the left end is connected to the return spring 10.
[0028] A limiting screw 12 is installed on the side of the left half of the traction rod 11. The limiting screw 12 is threadedly connected to the traction rod 11, and the axis of the limiting screw 12 is perpendicular to the axis of the traction rod 11. The limiting screw 12 can slide in the limiting groove of the left half of the guide sleeve 13 to prevent the traction rod 11 from rotating when sliding in the guide sleeve 13.
[0029] In use, the support beam 3 is installed on the outside of the cantilever main beam 2 of the cantilever platform 1, with the front section of the support beam 3 aligned with the displacement control point of the cantilever main beam 2 of the cantilever platform 1. The length of the wire rope 14 is adjusted to ensure the position of the traction rod 11 is appropriate, with the limiting screw 12 of the traction rod 11 basically in the middle of the limiting groove of the guide sleeve 13, and the tension of the return spring 10 is moderate. Then, the flip rod 5 is installed on the connecting plate 9, ensuring that the flip rod 5 can rotate freely. The flip rod 5 is rotated to a horizontal position, and the nuts at both ends of the limiting rod sleeve 18 are adjusted so that the limiting rod 16 passes through the flip rod limiting ring 17, with the length of the protrusion equal to the design limit vertical displacement of the end of the cantilever main beam 2 of the cantilever platform 1.
[0030] When the load is overloaded, the right end of the cantilever main beam of the cantilever platform 1 sinks. The vertical displacement of this end sinking is transmitted to the traction rod 11 through the wire rope 14. The traction rod 11 and the flip bar limit ring 17 on its side move to the right. The limit rod 16 on the counterweight 4 disengages from the flip bar limit ring 17. The flip bar 5 is quickly erected under the action of the counterweight 4. The warning sign sticker 6 is horizontally rotated to the top of the cantilever platform 1 to give the operator a clear overload warning.
[0031] After the overload condition is eliminated, the vertical displacement of the end of the cantilever main beam 2 of the cantilever platform 1 is restored. Under the action of the reset spring 10, the traction rod 11 returns to its initial position. The tilting rod 5 is manually rotated back to the horizontal state to restore the normal state.
[0032] This system uses the maximum displacement at the end of the cantilever main beam under the maximum load condition in the cantilever platform design as the control parameter. When the displacement reaches the design limit, the system can trigger an alarm to give the platform users a clear warning and ensure the safety of using the cantilever platform.
[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An overload alarm system for a cantilever construction platform, characterized in that, The system includes a flip bar (5), which is rotatably mounted on the side of the cantilever platform (1). A warning sign sticker (6) is provided at the right end of the flip bar (5), and a counterweight (4) is provided at the left end of the flip bar (5). A flip bar limiting ring (17) is provided above the cantilever platform (1) and slides in the horizontal direction with the counterweight (4). The flip bar limiting ring (17) is connected to the cantilever part at the right end of the cantilever platform (1) in a transmission connection.
2. The overload alarm system for a cantilevered construction platform according to claim 1, characterized in that, A support beam (3) is provided above the cantilever platform (1), and the flip bar (5) is rotatably installed on the side of the support beam (3).
3. The overload alarm system for a cantilevered construction platform according to claim 2, characterized in that, A horizontally arranged guide sleeve (13) is installed above the support beam (3). A traction rod (11) is slidably connected inside the guide sleeve (13). The flip rod limiting ring (17) is installed on the side of the traction rod (11). The right end of the traction rod (11) is connected to the cantilever part at the right end of the cantilever platform (1).
4. The overload alarm system for a cantilevered construction platform according to claim 3, characterized in that, A pulley (15) is installed at the right end of the support beam (3), and a wire rope (14) is connected to the right end of the traction rod (11). The wire rope (14) passes around the pulley (15) and is connected to the cantilevered part at the right end of the cantilever platform (1).
5. The overload alarm system for a cantilevered construction platform according to claim 3, characterized in that, The traction rod (11) is fitted with a limiting screw (12) on its side, and the guide sleeve (13) is provided with a limiting groove on its right side that cooperates with the limiting screw (12).
6. The overload alarm system for a cantilevered construction platform according to claim 3, characterized in that, The left end of the guide sleeve (13) is connected to a reset spring (10), which is connected to the support beam (3).
7. The overload alarm system for a cantilevered construction platform according to claim 2, characterized in that, There is a gap of a set distance between the support beam (3) and the cantilever platform.
8. The overload alarm system for a cantilevered construction platform according to claim 2, characterized in that, The side of the support beam (3) is provided with a limiting block (8) for limiting the rotation angle of the flip bar (5).
9. The overload alarm system for a cantilevered construction platform according to claim 1, characterized in that, The counterweight (4) is connected to a limiting rod sleeve (18) above it. An adjustable limiting rod (16) is installed inside the limiting rod sleeve (18). The limiting rod (16) is slidably connected to the flip rod limiting ring (17).