Electric power construction anti-falling device

Abstract

This utility model discloses a fall arrestor for power construction, which consists of a lifting frame, a sliding frame, a rotating shaft, a locking hook, and a drive module. The lifting frame has several spaced-apart locking holes along its height. The sliding frame is slidably connected to the lifting frame along its height. A support platform for the worker is connected to the sliding frame. The locking hook is fixed to the rotating shaft and can rotate around the sliding frame via the rotating shaft. The drive module is connected to the locking hook. When the support platform accidentally falls, the drive module drives the locking hook, causing it to rotate towards the locking holes. This allows the locking hook to engage with the locking holes at its end, thereby locking the sliding frame and preventing further sliding, thus preventing the support platform from falling. The cooperation between the locking hook and the locking holes effectively locks the support platform, eliminating the risk of further fall and ensuring the safety of power construction workers.

Description

Technical Field

[0001] This utility model relates to the field of power construction technology, and specifically to a power construction fall arrestor. Background Technology

[0002] During electrical work, workers often need to be transported to high places via elevators to perform their tasks.

[0003] The lifting platform includes a lifting frame and a support platform. The support platform is slidably connected to the lifting frame and is driven by a motor or other drive device to slide along the lifting frame, thereby raising and lowering the workers. To prevent the platform from falling and ensure the safety of the workers, the lifting platform is usually equipped with a fall arrestor to lock the support platform in the event of an accidental fall, so as to prevent the support platform from falling further.

[0004] Existing platform fall arrestors primarily use cams to clamp ropes when the support platform accidentally falls, thus preventing the platform from falling further. However, due to the large weight the support platform bears, the friction between the cam and the rope alone is insufficient to ensure complete locking of the platform. Furthermore, the ropes are at risk of breaking under sudden high-intensity tension, leaving the platform still at risk of continuing to fall and compromising the safety of workers. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a power construction fall arrestor to solve the technical problem that the existing fall arrestor cannot ensure the complete locking of the support platform, which poses certain safety hazards.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a fall arrestor for power construction, comprising:

[0008] The lifting frame has several spaced-apart lock holes along the height direction;

[0009] A sliding frame is slidably connected to the lifting frame along the height direction, and the sliding frame is provided for connecting the support platform;

[0010] The pivot is rotatably connected to the sliding frame;

[0011] A locking hook is fixed to the pivot and can be inserted into the locking hole by rotating the pivot, thereby restricting the sliding of the sliding frame;

[0012] A drive module, connected to the locking hook, is used to control the locking hook to rotate toward the lock hole when the support platform falls.

[0013] In some embodiments, the drive module includes a plurality of drive blocks, each of which is spaced apart on the lifting frame along the height direction. When the support platform falls, the side of the locking hook away from the lock hole can be rotated toward the lock hole by the drive of the drive blocks.

[0014] In some embodiments, the drive block is provided with arc-shaped guide surfaces on both the upper and lower sides, and the guide surfaces are used for sliding of the lock hook.

[0015] In some embodiments, the upper end of the locking hook is provided with a clearance ramp on the side near each of the driving blocks, wherein the end of each of the driving blocks can abut against the clearance ramp by the rising of the locking hook.

[0016] In some embodiments, the locking hook is provided with a rotating wheel, which is rotatably connected to the side of the locking hook and protrudes from the locking hook toward the drive block, and can abut against each of the drive blocks by raising and lowering the locking hook.

[0017] In some embodiments, the lifting frame is provided with a limiting groove extending in the height direction, the driving block is disposed in the limiting groove, and the end of the locking hook is located in the limiting groove.

[0018] In some embodiments, an elastic element is also included, which is connected to the pivot shaft to drive the pivot shaft to rotate so that the lock hook rotates away from the keyhole.

[0019] In some embodiments, the rotation is provided with a drive plate, and the two ends of the elastic member are connected to the drive plate and the sliding frame.

[0020] In some embodiments, the sliding frame is provided with an adjusting screw and a connecting shaft. The adjusting screw is threadedly connected to the sliding frame, the connecting shaft is sleeved on the adjusting screw, and the lower end of the elastic element is connected to the connecting shaft.

[0021] In some embodiments, the elastic element is a tension spring.

[0022] Compared with existing technologies, the power construction fall arrestor provided by this utility model consists of a lifting frame, a sliding frame, a rotating shaft, a locking hook, and a drive module. The lifting frame has several spaced-apart locking holes along the height direction. The sliding frame is slidably connected to the lifting frame along the height direction. A support platform for the worker is connected to the sliding frame. The locking hook is fixed to the rotating shaft and can rotate around the sliding frame via the rotating shaft. The drive module is connected to the locking hook. When the support platform accidentally falls, the drive module drives the locking hook, causing it to rotate towards the locking hole, so that the locking hook engages with the locking hole at its end, thereby locking the sliding frame and preventing further sliding of the sliding frame, thus preventing the support platform from falling. Through the cooperation of the locking hook and the locking hole, the support platform can be locked, effectively eliminating the risk of further fall of the support platform, thereby ensuring the safety of power construction workers. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the power construction fall arrestor provided in this embodiment of the utility model;

[0024] Figure 2 This is another structural schematic diagram of the power construction fall arrestor provided in this embodiment of the utility model.

[0025] Labels for each item in the figure:

[0026] 10-Lifting frame; 11-Lock hole; 12-Lifting groove; 13-Limiting groove;

[0027] 20-Sliding bracket; 21-Adjusting screw; 22-Connecting shaft;

[0028] 30 - Rotating shaft; 31 - Drive board; 311 - Connecting hole;

[0029] 40-Locking hook; 41-Spinning wheel; 42-Avoiding ramp;

[0030] 50 - Drive module; 51 - Drive block; 511 - Arc-shaped guide surface;

[0031] 60 - Elastic element. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To address the technical problem that existing fall arresters are prone to accidental locking, causing inconvenience in their use, this utility model provides a fall arrester for power construction. By cooperating with the locking hook and locking hole, the support platform is locked in time when it accidentally falls, thereby ensuring the safety of construction personnel.

[0034] It should be noted that the power construction fall arrestor described in this utility model is used, but not limited to, for fall arrest on lifting platforms used in power construction. It can also be used for fall arrest on lifting platforms used in construction sites, for example. For ease of explanation, this utility model will only use the application of the power construction fall arrestor to the fall arrest of lifting platforms used in power construction as an example. The principle of the power construction fall arrestor applied to the fall arrest of lifting platforms used in other construction is essentially the same as that applied to the fall arrest of lifting platforms used in power construction, and will not be described in detail here.

[0035] The power construction fall arrestor provided in this embodiment of the utility model, such as... Figure 1-2 As shown, the system includes a lifting frame 10, a sliding frame 20, a rotating shaft 30, a locking hook 40, and a drive module 50. The lifting frame 10 has several spaced-apart locking holes 11 along the height direction. The sliding frame 20 is slidably connected to the lifting frame 10 along the height direction and is used to connect to the support platform. The rotating shaft 30 is rotatably connected to the sliding frame 20. The locking hook 40 is fixed to the rotating shaft 30 and can be inserted into the locking hole 11 by rotating the rotating shaft 30 to restrict the sliding of the sliding frame 20. The drive module 50 is connected to the locking hook 40 and is used to control the locking hook 40 to rotate in the direction of the locking hole 11 when the support platform falls.

[0036] Specifically, the power construction fall arrestor consists of a lifting frame 10, a sliding frame 20, a rotating shaft 30, a locking hook 40, and a drive module 50. The lifting frame 10 has several spaced-apart locking holes 11 along its height. The sliding frame 20 is slidably connected to the lifting frame 10 along its height. A support platform for the workers is connected to the sliding frame 20. The locking hook 40 is fixed to the rotating shaft 30 and can rotate around the sliding frame 20 via the rotating shaft 30. The drive module 50 is connected to the locking hook 40. When the support platform accidentally falls, the drive unit drives the locking hook 40, causing it to rotate towards the locking hole 11. This allows the locking hook 40 to engage with the locking hole 11 through its bent end, thereby locking the sliding frame 20 and preventing further sliding of the sliding frame 20. This prevents the support platform from falling. The cooperation between the locking hook 40 and the locking hole 11 locks the support platform, effectively eliminating the risk of further fall and ensuring the safety of power construction workers.

[0037] In this embodiment, as Figure 1-2 As shown, lifting slots 12 extending along the height direction are provided on both sides of the lifting frame 10, and the two sides of the sliding frame 20 are slidably connected to the lifting slots 12 by sliders to achieve stable sliding along the lifting frame 10.

[0038] Understandably, the drive module 50 can be a motor connected to the rotating shaft 30. When the system detects that the support platform is falling rapidly, the motor drives the rotating shaft 30 to rotate, causing the locking hook 40 to hook the locking hole 11, thereby locking the support platform. Alternatively, the drive module 50 can be an electromagnetic component. When the system detects that the support platform is falling rapidly, the electromagnetic component is energized and becomes a magnetic component, attracting the locking hook 40, thereby driving the locking hook 40 to rotate and hook the locking hole 11, thereby locking the support platform.

[0039] In some embodiments, such as Figure 1 As shown, the drive module 50 includes several drive blocks 51, which are spaced apart along the height direction on the lifting frame 10. When the support platform falls, the side of the locking hook 40 away from the locking hole 11 can rotate towards the locking hole 11 through the drive of the drive blocks 51. Specifically, when the support platform slowly descends, the side of the locking hook 40 away from the locking hole 11 continuously contacts the drive blocks 51. However, due to the slow descent speed of the lifting frame, the locking hook 40 will never disengage from the drive blocks 51. At this time, the drive blocks 51 are insufficient to drive the locking hook 40 to the locking hole 11 and connect with it, so that the support platform can maintain stable lifting and lowering during normal operation. When the support platform falls unexpectedly, the speed of the support platform increases instantaneously. The locking hook 40 rotates towards the locking hole 11 under the impact of the drive blocks 51 and remains locked with the locking hole 11, thereby locking the support platform and preventing further fall of the support platform, ensuring the safety of the power construction personnel.

[0040] In some embodiments, such as Figure 1-2 As shown, the locking hook 40 is equipped with a rotating wheel 41, which is rotatably connected to the side of the locking hook 40 and protrudes from the locking hook 40 towards the drive block 51. The locking hook 40 can abut against each drive block 51 by raising and lowering. Specifically, during the raising and lowering of the support platform, the rotating wheel 41 will contact each drive block 51 and rotate under the drive of each support block to ensure that the locking hook 40 can pass smoothly through each drive block 51, thereby improving the stability of the support platform during raising and lowering.

[0041] In some embodiments, such as Figure 1 As shown, the drive block 51 has arc-shaped guide surfaces 511 on both its upper and lower sides, which are used for sliding of the locking hook 40. Specifically, the arc-shaped guide surfaces 511 can contact the rotating wheel 41 to provide guidance for the rotating wheel 41. When the support platform falls rapidly, the upper arc-shaped guide surface 511 will generate a large guiding force acting on the rotating wheel 41, locking the locking hook 40 into the lock hole 11.

[0042] In some embodiments, such as Figure 1As shown, a clearance ramp 42 is provided on the upper end of the locking hook 40 near the side of each drive block 51. When the support platform rises, the end of each drive block 51 can abut against the clearance ramp 42 through the rising of the locking hook 40. Specifically, when the support platform rises, the end of the drive block 51 will contact the clearance ramp 42, thereby preventing the drive block 51 from obstructing the rise of the support platform.

[0043] In some embodiments, such as Figure 1-2 As shown, the lifting frame 10 is provided with a limiting groove 13 extending along the height direction, the driving block 51 is disposed in the limiting groove 13, and the end of the locking hook 40 is located in the limiting groove 13. Specifically, the limiting groove 13 can limit the locking hook 40 to ensure that the locking hook 40 can always remain opposite to the locking hole 11.

[0044] In some embodiments, such as Figure 1-2 As shown, the fall arrestor also includes an elastic element 60, which is connected to the rotating shaft 30 and is used to drive the rotating shaft 30 to rotate, so that the locking hook 40 rotates away from the locking hole 11. Specifically, the elastic element 60 generates a driving force to rotate the locking hook 40 away from the locking hole 11, so that under normal circumstances, the locking hook 40 can always remain away from the locking hole 11, thus preventing the support platform from locking accidentally.

[0045] Understandably, the elastic element 60 can be any elastic component, such as a torsion spring, that can generate a force that drives the rotating shaft 30 to rotate.

[0046] In some embodiments, such as Figure 1-2 As shown, a drive plate 31 is rotatably mounted, and both ends of the elastic element 60 are connected to the drive plate 31 and the sliding frame 20. Specifically, the drive plate 31 is provided with a connection hole 311, which allows the elastic element 60 to be connected, thereby ensuring a stable connection between the elastic element 60 and the drive plate 31.

[0047] In some embodiments, such as Figure 1-2 As shown, the elastic element 60 is a tension spring. Specifically, the tension spring can generate a certain tension force acting on the drive plate 31, so that the locking hook 40 is away from the lock hole 11 under normal conditions, thus preventing the support platform from locking unexpectedly.

[0048] In some embodiments, such as Figure 1-2As shown, the sliding frame 20 is equipped with an adjusting screw 21 and a connecting shaft 22. The adjusting screw 21 is threaded onto the sliding frame 20, and the connecting shaft is sleeved on the adjusting screw 21. The lower end of the elastic element 60 is connected to the connecting shaft. Specifically, by turning the adjusting screw 21, the tension of the elastic element 60 can be adjusted, thereby adjusting the driving force of the elastic element 60 acting on the locking hook 40. Through several adjustments, the force of the elastic element 60 acting on the rotating shaft 30 can be adjusted to a suitable range, so that the locking hook 40 can always stay away from the locking hole 11 when the support platform is normally raised and lowered, and can be locked with the locking hole 11 by the drive of the drive block 51 in the event of an accidental fall of the support platform, thereby ensuring the stability of the fall arrestor function.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A fall arrestor for power construction, characterized in that, include: The lifting frame has several spaced-apart lock holes along the height direction; A sliding frame is slidably connected to the lifting frame along the height direction, and the sliding frame is provided for connecting the support platform; The pivot is rotatably connected to the sliding frame; A locking hook is fixed to the pivot and can be inserted into the locking hole by rotating the pivot, thereby restricting the sliding of the sliding frame; A drive module, connected to the locking hook, is used to control the locking hook to rotate toward the lock hole when the support platform falls.

2. The electrical construction fall arrestor of claim 1, wherein, The drive module includes several drive blocks, each of which is spaced apart along the height direction on the lifting frame. When the support platform falls, the side of the locking hook away from the lock hole can be rotated toward the lock hole by the drive of the drive block.

3. The electrical construction fall arrestor of claim 2, wherein, The drive block has arc-shaped guide surfaces on both its upper and lower sides, which are used for the sliding of the lock hook.

4. The electrical construction fall arrestor of claim 2, wherein, The upper end of the locking hook is provided with a clearance ramp on the side near each of the driving blocks. When the locking hook rises, the end of each of the driving blocks can abut against the clearance ramp.

5. The electrical construction fall arrestor of claim 2, wherein, The locking hook is equipped with a rotating wheel, which is rotatably connected to the side of the locking hook and protrudes from the locking hook toward the drive block. The locking hook can abut against each of the drive blocks by raising and lowering itself.

6. The electrical construction fall arrestor of claim 2, wherein, The lifting frame is provided with a limiting groove extending along the height direction, the driving block is disposed in the limiting groove, and the end of the locking hook is located in the limiting groove.

7. The electrical construction fall arrestor of claim 2, wherein, It also includes an elastic element connected to the pivot shaft, which drives the pivot shaft to rotate so that the lock hook rotates away from the keyhole.

8. The electrical construction fall arrestor of claim 7, wherein, The rotation is provided with a drive plate, and the two ends of the elastic element are connected to the drive plate and the sliding frame.

9. The electrical construction fall arrestor of claim 7, wherein, The sliding frame is provided with an adjusting screw and a connecting shaft. The adjusting screw is threaded to the sliding frame, the connecting shaft is sleeved on the adjusting screw, and the lower end of the elastic element is connected to the connecting shaft.

10. The electrical construction fall arrestor of claim 7, wherein, The elastic element is a tension spring.

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