Suspension device of steel structure safety rope

Abstract

The utility model discloses a suspension device of a steel structure safety rope, which belongs to the technical field of high-altitude operation equipment and comprises a suspension beam and a screw. Threaded supports are arranged at the two ends of the suspension beam respectively. And the two screw rods can be in threaded connection with the corresponding threaded supports respectively. Threaded supports are arranged at the two ends of the suspension beam, and the two screws are in threaded connection with the threaded supports. Through threaded fit of the screw and the threaded support, matched limiting of the suspension device and the I-shaped steel flange is achieved, and then a stable suspension point is provided for the safety rope. The slippage risk of a traditional clamp is avoided through the thread self-locking characteristic. The suspension device does not need a customized clamp and is high in universality; no complex connecting node exists, the failure rate is low, and the safety of high-altitude operation is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-altitude work equipment, specifically a suspension device for a steel structure safety rope. Background Technology

[0002] In steel structure construction, curtain wall installation, and equipment maintenance, I-beams, as a type of steel beam, are widely used as key load-bearing components such as beams and support frames due to their excellent load-bearing capacity and structural stability. When workers are moving or operating at heights, they typically need to be suspended from the I-beams by safety ropes to prevent falls. However, existing safety rope suspension devices for I-beams have significant technical defects, leading to low work efficiency and frequent safety hazards. Common suspension methods include the following:

[0003] U-shaped clips or bolt clamps: These are fixed to the flanges of I-beams by mechanical clamping, but such devices have insufficient clamping force. Under dynamic loads, the clamps are prone to uneven loading, leading to slippage or even detachment. Furthermore, frequent adjustments to bolt tightness are required during installation, making the process cumbersome.

[0004] Wire rope binding fixation: The wire rope is wrapped around the I-beam and knotted to form a suspension point. Although this method is inexpensive, it has problems such as the knots being easy to loosen and the wire rope having a high risk of wear and breakage. After long-term use, the contact between the rope and the sharp edge of the I-beam is prone to local wear, resulting in a decrease in strength. In addition, the binding process is time-consuming and cannot meet the needs of frequent moving operations.

[0005] Welding temporary lifting rings: While welding temporary lifting rings as anchor points to the surface of the I-beam provides high stability, the welding operation requires professional personnel, and the high-temperature welding can damage the anti-corrosion coating on the surface of the I-beam, affecting the structural durability. Furthermore, secondary repairs are required after removing the lifting rings, increasing construction costs and time. Utility Model Content

[0006] The purpose of this invention is to provide a suspension device for a steel structure safety rope to solve the problems mentioned in the prior art.

[0007] A suspension device for a steel structure safety rope is provided, comprising:

[0008] A suspension beam, wherein threaded supports are provided at both ends of the suspension beam;

[0009] The two screws can be threadedly connected to the corresponding threaded support.

[0010] Furthermore, a stop flange is provided at the end of the screw away from the steel beam.

[0011] The stop flange is used to limit the screw insertion depth. On the one hand, it prevents the screw from being screwed in too deeply and squeezing the web of the I-beam, protecting the coating of the I-beam from being crushed. On the other hand, it provides a tightening finger mark to prevent the screw from penetrating the threaded support after being screwed in too deeply.

[0012] Furthermore, a roller is provided at the end of the screw near the steel beam.

[0013] A roller is added to the end of the screw. The roller rolls in contact with the flange of the I-beam, allowing the suspension device to move with the operator and facilitating the operator's movement.

[0014] Furthermore, a bearing is provided between the roller and the screw.

[0015] The bearing reduces the rolling friction between the roller and the screw, preventing torque generated when the roller and the screw get stuck, which could cause the screw to unscrew relative to the threaded support and lead to suspension failure.

[0016] Furthermore, the threaded sections of the screw are recessed inward to form sliding sections.

[0017] The sliding section divides the threaded section of the screw into two parts. After the first threaded section is screwed into the threaded support, it encounters the sliding section, and the threaded connection is terminated. Then, the second threaded section is screwed into the threaded support. When the second threaded section is forced out due to dynamic load, the axis of the sliding section is offset from the axis of the threaded hole of the threaded support, which increases the difficulty of unscrewing the first threaded section of the screw, thus forming a secondary protection measure.

[0018] Furthermore, the threaded support has a first threaded hole, a connecting portion, and a second threaded hole arranged in a continuous manner. The portion of the screw that is screwed into the threaded support consists of a first threaded segment, a sliding segment, and a second threaded segment in sequence. The first threaded segment is threaded to the first threaded hole, and the second threaded segment is threaded to the second threaded hole. The connecting portion is only for the sliding segment on the screw to pass through.

[0019] The first threaded section of the screw is screwed into the first threaded hole first, then the threaded connection of the sliding section is stopped. The sliding section of the screw slides through the connecting part into the second threaded hole, and finally the second threaded section of the screw is screwed into the second threaded hole. When the second threaded section is forced out of the second threaded hole due to dynamic load, the first threaded section cannot achieve threaded engagement because it is not compatible with the thread of the second threaded hole. At this time, the sliding section needs to re-enter the first threaded hole through the connecting part, and only then can a possible threaded engagement be achieved between the first threaded section and the first threaded hole. The multi-stage obstruction further increases the difficulty of the screw being screwed out of the threaded support, significantly improving the safety of the suspension device.

[0020] Furthermore, the inner diameter of the first screw hole is larger than the inner diameter of the second screw hole.

[0021] By using unequal inner diameters, a mismatch effect is achieved between the first threaded section and the second threaded hole, and between the second threaded section and the first threaded hole, to form a complex path for the screw to rotate.

[0022] Furthermore, the pitch of the first screw hole is not equal to the pitch of the second screw hole.

[0023] By using unequal thread pitches, a mismatch effect is achieved between the first thread segment and the second threaded hole, and between the second thread segment and the first threaded hole, to form a complex path for the screw to rotate.

[0024] Furthermore, a lifting ring is provided at the bottom of the suspension beam, the suspension beam is a channel steel, and the lifting ring has two connecting sections that are welded and fixed to the two inner walls of the channel steel respectively.

[0025] The two flanges of the channel steel provide a connection area for the two connecting sections of the lifting ring and increase the welding area to improve the connection strength between the lifting ring and the suspension beam.

[0026] Furthermore, a lifting ring is provided at the bottom of the suspension beam, the suspension beam is a T-shaped steel, and the lifting ring has two connecting sections that are welded and fixed to the two side walls of the web of the T-shaped steel.

[0027] The web of the T-beam provides a connection area for the two connecting sections of the lifting ring and increases the welding area to improve the connection strength between the lifting ring and the suspension beam.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] Threaded supports are installed at both ends of the suspension beam, with two screws threadedly connected to these supports. The threaded engagement between the screws and the supports achieves the locking and positioning of the suspension device with the I-beam flange, thus providing a stable suspension point for the safety rope. The self-locking nature of the threads avoids the slippage risk of traditional clamps. This suspension device requires no custom clamps, offering high versatility; it has no complex connection nodes, resulting in a low failure rate and improved safety for high-altitude operations. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the suspension device for the safety rope of the steel structure.

[0032] Figure 2 for Figure 1Enlarged view of region A in the middle;

[0033] Figure 3 One of the structural schematic diagrams of the suspension beam provided by this utility model;

[0034] Figure 4 The second schematic diagram of the suspension chain provided by this utility model.

[0035] In the diagram: 1. Suspension beam; 2. Screw; 21. First threaded section; 22. Sliding section; 23. Second threaded section; 3. Threaded support; 31. First threaded hole; 32. Connecting part; 33. Second threaded hole; 4. Stop flange; 5. Roller; 6. Lifting ring. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0037] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0038] However, there may be instances where unnecessary detailed descriptions are omitted. For example, detailed descriptions of well-known matters or repetitive descriptions of essentially the same structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this application and are not intended to limit the subject matter of the claims.

[0039] Please see Figure 1-2 As shown in the embodiment of this utility model, a suspension device for a steel structure safety rope includes a suspension beam 1 and screw rods 2. Threaded supports 3 are respectively provided at both ends of the suspension beam 1. The two screw rods 2 can be threadedly connected to their respective threaded supports 3.

[0040] During installation, the suspension beam 1 is arranged along the width of the I-beam. Two threaded supports 3 are located on the two flange sides of the I-beam, respectively. Two screws 2 are screwed into their corresponding threaded supports 3 for threaded engagement. After screwing in, the ends of the screws 2 enter the flange plate area of ​​the I-beam and contact the flange plate under gravity to achieve a limiting position. Under the limiting position of the two screws 2, the suspension beam 1 can only move along the length of the I-beam. The safety rope buckle is then connected to the suspension beam 1 for fixation.

[0041] Considering the need for operators to move back and forth during operation, a roller 5 is installed at the end of the screw 2 near the web of the I-beam. The roller 5 can roll on the flange of the I-beam. When the safety rope drags the suspension device, the roller 5 reduces the friction between the screw 2 and the flange of the I-beam by rolling, making the suspension device move more flexibly. The roller 5 forces the threads on the surface of the screw 2 away from the surface of the flange, preventing the screw 2 from rubbing against the flange surface and damaging the surface coating.

[0042] Furthermore, the roller 5 and the screw 2 are connected by a bearing. The bearing can significantly reduce the friction between the roller 5 and the screw 2, thereby improving the smoothness of the roller 5's rolling and preventing the roller 5 from generating torque on the screw 2 during rolling, which would cause the screw 2 to rotate out in the opposite direction relative to the threaded support 3, resulting in the failure of the suspension device.

[0043] A sliding section 22 is formed by an inward indentation between the threaded sections of the screw 2. The outer diameter of the sliding section 22 is smaller than the outer diameter of the threaded section. When the screw 2 is screwed into the threaded support 3 up to the sliding section 22, there is a slight radial movement freedom between the screw 2 and the threaded support 3. The screw 2 can then continue to be screwed into the threaded support 3 to complete the mechanical engagement. However, when the screw 2 is forced to unscrew from the threaded support 3 under dynamic load, the sliding section 22 engages with the threaded support 3 first. Under the action of force, an eccentric contact is generated between the sliding section 22 and the threaded support 3, making it difficult for the screw 2 to align with the threaded hole of the threaded support 3 and thus to produce a threaded engagement, interrupting the tendency of the screw 2 to continue to unscrew.

[0044] Furthermore, the threaded support 3 has a first threaded hole 31, a connecting portion 32, and a second threaded hole 33 arranged continuously. The portion of the screw 2 that screws into the threaded support 3 consists of a first threaded section 21, a sliding section 22, and a second threaded section 23, in sequence. The first threaded section 21 can only be fitted with the thread of the first threaded hole 31, the second threaded section 23 can only be fitted with the thread of the second threaded hole 33, and the connecting portion 32 is only for the sliding section 22 on the screw 2 to pass through.

[0045] In one specific embodiment, after the first threaded segment 21 is screwed into the first threaded hole 31, the screwing process of the screw 2 is interrupted by the sliding segment 22, and the second threaded segment 23 cannot be screwed into the first threaded hole 31. Then, the sliding segment 22 enters the region of the second threaded hole 33 through the connecting part 32. At this time, the first threaded segment 21 cannot be threaded into the second threaded hole 33, and only the second threaded segment 23 can be threaded into the second threaded hole 33. If the screw 2 is subjected to dynamic load and has a tendency to unscrew the threaded support 3, the screw 2 needs to go through the above-mentioned screwing process in reverse to unscrew. The complex unscrewing path creates multiple interferences during this period, including the eccentric contact between the sliding segment 22 and the second threaded hole 33, the eccentric contact between the sliding segment 22 and the first threaded hole 31, and the limiting effect of the connecting part 32 on the sliding segment 22 between the first threaded hole 31 and the second threaded hole 33, to ensure the stability of the fit between the screw 2 and the threaded support 3.

[0046] In one embodiment, the inner diameter of the first threaded hole 31 is larger than the inner diameter of the second threaded hole 33, allowing the first threaded segment 21 to be smoothly screwed into the first threaded hole 31. After the sliding segment 22 passes through the connecting part 32, the second threaded hole 33 limits the first threaded segment 21, allowing only the second threaded segment 23 to achieve threaded engagement with the second threaded hole 33. When the second threaded segment 23 is screwed out, the screw 2 will not disengage from the second threaded hole 33 due to the interference effect of the diameters of the second threaded hole 33 and the first threaded segment 21.

[0047] In one embodiment, the pitch of the first threaded hole 31 is not equal to the pitch of the second threaded hole 33, allowing the first threaded segment 21 to smoothly screw into the first threaded hole 31. After the sliding segment 22 passes through the connecting part 32, the second threaded hole 33 blocks the screwing in of the first threaded segment 21, allowing only the second threaded segment 23 to achieve threaded engagement with the second threaded hole 33. When the second threaded segment 23 is screwed out, the screw 2 will not disengage from the second threaded hole 33 due to the thread interference effect between the second threaded hole 33 and the first threaded segment 21.

[0048] A stop flange 4 is provided at the end of the screw 2 away from the steel beam. The stop flange 4 serves as a physical limiting structure at the end of the screw 2. When the screw 2 is screwed into the threaded support 3, the stop flange 4 contacts the outer end face of the threaded support 3, preventing the screw 2 from continuing to screw in.

[0049] In a further embodiment, the outer diameter of the stop flange 4 is larger than the diameters of the first screw hole 31 and the second screw hole 33.

[0050] Specifically, a lifting ring 6 is provided at the bottom of the suspension beam 1. The lifting ring 6 serves as the anchor point for the safety rope and is welded to the high-rigidity area of ​​the suspension beam 1. It is connected to the safety rope via a slip knot to transmit force.

[0051] In one embodiment, see Figure 3As shown, the suspension beam 1 is a channel steel, and the lifting ring 6 has two connecting sections that are welded and fixed to the two inner walls of the channel steel respectively. The channel steel increases the bending strength and stability of the suspension beam 1 by increasing the moment of inertia of the cross section, and increases the connection points with the lifting ring 6 to distribute the force on the lifting ring 6 and avoid stress concentration.

[0052] In one embodiment, see Figure 4 As shown, the suspension beam 1 is a T-shaped steel, and the lifting ring 6 has two connecting sections that are welded and fixed to the two side walls of the web of the T-shaped steel. The T-shaped steel improves the bending strength and stability of the suspension beam 1 through the web, and distributes the force on the lifting ring 6 by increasing the connection points with the lifting ring 6 on both sides of the web.

[0053] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A suspension device for a steel structure safety rope, characterized in that, include: Suspension beam (1), with threaded supports (3) provided at both ends of the suspension beam (1); The two screws (2) can be threadedly connected to the corresponding threaded support (3).

2. The suspension device for a steel structure safety rope according to claim 1, characterized in that, The screw (2) is provided with a stop flange (4) at the end away from the steel beam.

3. The suspension device for a steel structure safety rope according to claim 1, characterized in that, The screw (2) is equipped with a roller (5) at one end near the steel beam.

4. The suspension device for a steel structure safety rope according to claim 3, characterized in that, A bearing is provided between the roller (5) and the screw (2).

5. The suspension device for a steel structure safety rope according to claim 1, characterized in that, The screw (2) has an inwardly recessed sliding section (22) between the threaded sections.

6. The suspension device for a steel structure safety rope according to claim 5, characterized in that, The threaded support (3) has a first threaded hole (31), a connecting portion (32) and a second threaded hole (33) arranged continuously. The part of the screw (2) that is screwed into the threaded support (3) consists of a first threaded section (21), a sliding section (22) and a second threaded section (23) in sequence. The first threaded section (21) is threaded to the first threaded hole (31), and the second threaded section (23) is threaded to the second threaded hole (33). The connecting portion (32) is only for the sliding section (22) on the screw (2) to pass through.

7. The suspension device for a steel structure safety rope according to claim 6, characterized in that, The inner diameter of the first screw hole (31) is larger than the inner diameter of the second screw hole (33).

8. The suspension device for a steel structure safety rope according to claim 6, characterized in that, The pitch of the first screw hole (31) is not equal to the pitch of the second screw hole (33).

9. The suspension device for a steel structure safety rope according to claim 1, characterized in that, The bottom of the suspension beam (1) is provided with a lifting ring (6). The suspension beam (1) is a channel steel. The lifting ring (6) has two connecting sections that are welded and fixed to the two inner walls of the channel steel respectively.

10. The suspension device for a steel structure safety rope according to claim 1, characterized in that, The bottom of the suspension beam (1) is provided with a lifting ring (6). The suspension beam (1) is a T-shaped steel. The lifting ring (6) has two connecting sections that are welded and fixed to the two side walls of the web of the T-shaped steel.

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