jacking catwalk

Abstract

The utility model relates to vehicle rescue technical field especially top lift and draw ladder, including annular rigging, the lower end of annular lockset is equipped with multiple groups for adjusting locking position, the auxiliary lockset of adapting to different hoisting height demand, the interlocking connection through locking piece between annular rigging and auxiliary lockset, the connecting piece between insert piece and locking piece is equipped with, through connecting piece, insert piece, locking piece will be multiple annular rigging gradually spliced and form the flexible structure of similar soft ladder, the utility model discloses the combination of annular rigging, auxiliary lockset, insert piece, locking piece and connecting piece can be gradually spliced and extended and form the flexible structure of similar soft ladder, so that the device can be according to actual hoisting height freely extended or shortened, and the adaptability is strong, especially suitable for the special operation scene of tunnel, underground pipe gallery, wind turbine cabin and other space limited.

Description

Technical Field

[0001] This utility model relates to the field of vehicle rescue technology, and in particular to lifting ladders. Background Technology

[0002] A rollover accident refers to an incident where a vehicle overturns or rolls over due to improper driver operation, poor road conditions, or inclement weather conditions. Such accidents not only cause severe damage to the vehicle but also pose a significant risk of injury to occupants, potentially endangering their lives. In the face of rollover accidents and other traffic accidents, vehicle rescue services are particularly important. Vehicle rescue primarily provides emergency assistance to vehicles that have experienced breakdowns or accidents. Services are wide-ranging, including but not limited to towing, water changes, charging, tire changes, fuel delivery, and on-site minor repairs. These rescue services aim to quickly respond to the owner's urgent needs, help resolve unexpected problems, and ensure the vehicle can be restored to normal operation as soon as possible.

[0003] Meanwhile, traditional hoisting methods face numerous challenges in space-constrained tunnels, underground utility tunnels, or other enclosed environments. Large lifting machinery such as truck cranes and crawler cranes are too bulky to access these narrow areas, making conventional hoisting solutions difficult to implement. Using chain hoisting requires the pre-construction of a stable support frame or suspension points, which is often difficult to achieve in complex structures and confined spaces like tunnels. Especially in environments with concrete structures or densely packed pipelines, finding suitable load-bearing points is not only time-consuming and labor-intensive but may also damage the existing structure. Traditional chain hoisting systems lack modularity and flexible expansion capabilities, making it difficult to adapt to hoisting requirements at different heights and angles. Particularly in situations requiring multi-point coordinated hoisting, the poor synchronization and coordination between multiple chain hoisting points can easily lead to uneven stress distribution and increase safety risks. Utility Model Content

[0004] To overcome the problems of large machinery being unable to enter for hoisting operations, the use of guide chains being too cumbersome and requiring the erection of frames, which poses many inconveniences in space-constrained environments, this utility model provides a lifting ladder.

[0005] The technical solution is as follows: a lifting ladder, including a ring sling; multiple sets of auxiliary locks are installed at the lower end of the ring sling for adjusting the locking position to adapt to different hoisting height requirements. The ring sling and the auxiliary locks are connected by locking parts. A connecting part is provided between the insert and the locking part. Multiple ring slings are spliced ​​together step by step through the connecting part, insert, and locking part to form a flexible structure similar to a rope ladder.

[0006] Furthermore, a fixing groove is provided on the upper side inside the insert, and the fixing groove is connected to the upper-level ring rigging.

[0007] Furthermore, a connecting groove is provided on the lower side of the insert, which connects to the next level of auxiliary lock.

[0008] Furthermore, the auxiliary lock enters the insert to form a snap-fit ​​connection.

[0009] Furthermore, the locking mechanism uses a U-shaped buckle structure to clamp the ring rigging and the auxiliary lock respectively.

[0010] Furthermore, the locking component has fastening screws on its side surface that correspond to the connecting groove.

[0011] Furthermore, the surface of the fastening screw is provided with a fixing rod that passes through the locking element and is fastened to the auxiliary lock.

[0012] Furthermore, the locking mechanism allows the fixing rod to open and close quickly by rotating the fastening screw, thus securing the lock in place.

[0013] The beneficial effects are as follows: This utility model realizes a flexible structure similar to a rope ladder, which can be gradually extended by combining ring rigging, auxiliary locks, inserts, locking parts and connectors. This modular design allows the device to be freely expanded or shortened according to the actual hoisting height, making it highly adaptable. It is especially suitable for special operation scenarios with limited space, such as tunnels, underground pipe corridors, and wind turbine nacelles. The inserts and auxiliary locks are connected by a snap-fit, and with the U-shaped locking parts and rotatable fastening screws, tool-free quick connection is achieved. The overall structure has a certain degree of flexibility and bending ability, similar to a rope ladder. It can be flexibly arranged in irregular terrain or limited space, bypassing obstacles, and meeting the hoisting needs in complex environments such as high altitude, inclination, and narrow spaces. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the lifting ladder of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall front structure of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the connector of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the fixing groove of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the fixing rod of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Ring rigging; 2. Auxiliary lock; 3. Locking element; 4. Insert; 5. Connecting element; 6. Fixing groove; 7. Connecting groove; 8. Fastening screw; 9. Fixing rod. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Among the currently discovered feasible technologies, the following are described:

[0022] A rollover accident refers to a traffic accident in which a vehicle overturns or rolls continuously out of control due to driver error, failure to judge emergencies in time, complex road conditions, or adverse weather conditions. These accidents are often characterized by their suddenness and destructiveness, causing severe structural deformation or even total loss of the vehicle, and potentially fatal injuries to occupants such as head impacts, limb crushing, and multiple impacts from the rollover. In severe cases, they can even trigger secondary disasters such as fires and drownings, directly threatening lives. In the face of such sudden rollover accidents, rapid and effective rescue is crucial. Vehicle rescue services play an irreplaceable role as a vital means of responding to traffic accidents and sudden breakdowns. Vehicle rescue primarily provides emergency assistance to vehicle owners who are unable to continue driving due to sudden breakdowns, accidents, running out of fuel, dead batteries, tire blowouts, or other situations. Its services are comprehensive, covering towing, on-site tire changes, jump-starting, fuel delivery, water replenishment, and basic emergency measures such as simple mechanical repairs. The core objective of these services is to respond quickly to vehicle owners' needs, arrive at the scene in the shortest possible time, assist in resolving emergencies, reduce the impact of accidents or breakdowns, ensure vehicles can be restored to operational status as quickly as possible, reduce the risk of traffic congestion, and protect the personal safety of drivers and passengers. Especially in major accidents such as rollovers, professional rescue teams can not only safely tow damaged vehicles away from the accident scene but also cooperate with relevant departments in on-site handling, assisting in road clearing and restoring traffic order. For example, in complex terrain conditions, such as mountain roads or narrow city streets, rescue teams need highly specialized skills and advanced equipment to perform their tasks. High-end rescue services are equipped with professional lifting equipment and technicians who can perform challenging operations such as vehicle righting and hoisting in complex terrain or space-constrained environments, further improving rescue efficiency and safety. Through an efficient and professional vehicle rescue system, not only can accident handling time be effectively shortened, but property damage and personal injury can also be minimized, providing strong support for road traffic safety. Whether it's a minor everyday malfunction or a serious rollover accident, a comprehensive rescue mechanism can provide vehicle owners with all-round safety protection, reflecting modern society's high level of attention and emphasis on traffic safety and emergency response capabilities. This comprehensive and efficient rescue service network not only improves public safety but also brings greater peace of mind and confidence to every traveler.

[0023] Meanwhile, in confined spaces such as tunnels, underground utility tunnels, or other enclosed environments, traditional hoisting methods face numerous challenges and limitations. These areas are typically narrow, low-ceilinged, structurally complex, and poorly ventilated, making it impossible for conventional large-scale lifting machinery, such as truck cranes, crawler cranes, and bridge cranes, to enter or effectively operate due to their large size and high space requirements. This directly restricts the practical application of traditional hoisting solutions, especially when lifting, righting, or moving heavy equipment, accident vehicles, or structural components; the lack of effective operating methods becomes a major problem. In such situations, some engineering units use manual chain hoisting with simple supports as an alternative. However, this method also has many problems. First, using chain hoisting requires the pre-construction of a stable support frame or the search for reliable suspension points. In complex environments such as tunnels and underground utility tunnels, especially in areas with concrete structures or dense existing pipelines, it is difficult to find suitable load-bearing points. Even if a usable structure is found, extensive assessment and reinforcement work is required, which is not only time-consuming and labor-intensive but may also damage the existing building structure, creating safety hazards. Secondly, traditional chain hoisting systems are mostly designed with fixed lengths, lacking modularity and flexible expansion capabilities, making it difficult to flexibly adjust height or angle according to actual site conditions. For tasks requiring multi-point coordinated hoisting, such as righting overturned vehicles, tilting large equipment, or turning it in mid-air, the poor synchronization and uneven stress among multiple chain hoists are particularly prominent, easily leading to localized overload, structural deformation, and even secondary accidents, further increasing operational risks. Furthermore, chain hoisting operations rely on continuous manual pulling, resulting in high labor intensity and low efficiency. Especially when maintaining the hoisting position for extended periods or making fine adjustments, operators are prone to fatigue, affecting operational safety. In addition, such environments often suffer from insufficient lighting, limited ventilation, and poor visibility, further exacerbating the operational difficulty and safety risks.

[0024] Therefore, in such confined spaces, a flexible lifting device that is lightweight, easy to assemble quickly, highly adjustable, and possesses good stability is needed. This device should be able to effectively lift, move, and adjust the posture of heavy objects without the support of large mechanical equipment, making it particularly suitable for complex work scenarios requiring flexible operation, such as vehicle overturning and equipment rotation installation. Simultaneously, its connection structure should have good interchangeability and scalability, allowing for flexible splicing and extension according to actual working conditions, while ensuring the safety and reliability of the overall system. This would effectively fill the gaps in the application of existing lifting methods in confined spaces, improving construction efficiency and safety levels.

[0025] like Figures 1-5As shown, the lifting ladder includes a ring sling 1; multiple sets of auxiliary locks 2 are installed at the lower end of the ring sling to adjust the locking position and adapt to different hoisting height requirements. The ring sling 1 and the auxiliary locks 2 are connected by locking parts 3. A connecting part 5 is provided between the insert part 4 and the locking part 3. Multiple ring slings 1 are spliced ​​step by step through the connecting part 5, the insert part 4, and the locking part 3 to form a flexible structure similar to a rope ladder.

[0026] The upper side of the insert 4 has a fixing groove 6, which connects to the upper-level ring sling 1 to achieve stable positioning and quick assembly of the upper-level ring sling 1. The lower side of the insert 4 has a connecting groove 7, which connects to the lower-level auxiliary lock 2 to provide a precise docking position for the lower-level lock and ensure a stable and reliable connection. The auxiliary lock 2 enters the insert 4 to form a snap-fit ​​connection, which enables tool-free quick installation and improves operating efficiency and on-site adaptability.

[0027] When performing hoisting or jacking operations, the operator first selects the appropriate position of the auxiliary locking device 2 according to the required hoisting height. The height is adapted by adjusting the auxiliary locking devices 2 at different positions at the lower end of the ring sling 1. The upper-level ring sling 1 is inserted into the fixing groove 6 on the upper side inside the insert 4. The limiting structure of the fixing groove 6 is used to quickly complete the positioning and initial connection, ensuring that the ring sling 1 will not slip or shift. Next, the lower-level auxiliary locking device 2 is inserted from below into the connecting groove 7 on the lower side inside the insert 4. The connecting groove 7 provides precise guidance and support for the auxiliary locking device 2, making it stably embedded. When the auxiliary locking device 2 is fully inserted into the insert 4, the two automatically form a snap-fit ​​connection. The assembly can be completed firmly without the use of additional tools, which greatly improves the efficiency and flexibility of on-site operation. Multiple such connecting units are connected in series through the connecting piece 5, and multiple ring slings 1 are spliced ​​together step by step to finally form a flexible, extendable, height-adjustable and structurally stable rope ladder hoisting system.

[0028] Please see Figures 3-4 The locking component 3 uses a U-shaped buckle structure to clamp the ring rigging 1 and the auxiliary lock 2 respectively, providing basic clamping force to ensure the initial stability and safety of the connection node. The side surface of the locking component 3 is provided with a fastening screw 8 corresponding to the connecting groove 7, which facilitates secondary reinforcement of the connection part and enhances the overall structural reliability. The surface of the fastening screw 8 is provided with a fixing rod 9 that passes through the locking component 3 and the auxiliary lock 2 to achieve a rigid connection between the lock and the locking component 3, preventing accidental detachment. The locking component 3 can quickly open and close the fixing rod 9 by rotating the fastening screw 8, fixing the lock connection, supporting quick locking and releasing, and improving the convenience of operation and the safety of operation.

[0029] After the operator places the ring rigging 1 and the next-level auxiliary lock 2 at the upper and lower connection positions of the insert 4, the U-shaped locking piece 3 snaps down from above. Its opening clamps the ring rigging 1 and the auxiliary lock 2 respectively, forming a preliminary clamping structure. This provides basic clamping force for the entire connection node, ensuring that the components will not easily slip off, achieving initial stability and safety. Subsequently, the operator tightens the fastening screw 8 installed on the side surface of the locking piece 3. This screw passes through the locking piece 3 and extends into the interior, causing the fixing rod 9, which is integrally set with it, to move synchronously. As the screw is tightened, the fixing rod 9 presses down on the auxiliary lock 2, forming a rigid connection between it and the insert 4, thus completing the secondary reinforcement of the connection. If disassembly or height adjustment is required, simply rotate the fastening screw 8 in the opposite direction to lift the fixing rod 9, releasing the pressure on the auxiliary lock 2, and quickly open the locking state, achieving rapid opening and closing and convenient operation.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting ladder, characterized in that, It includes a ring sling (1); the lower end of the ring sling (1) is equipped with multiple sets of auxiliary locks (2) for adjusting the locking position to adapt to different hoisting height requirements. The ring sling (1) and the auxiliary locks (2) are connected by locking parts (3). A connecting part (5) is provided between the insert (4) and the locking part (3). Multiple ring slings are spliced ​​together step by step through the connecting part (5), the insert (4), and the locking part (3) to form a flexible structure similar to a rope ladder.

2. The lifting ladder according to claim 1, characterized in that, The insert (4) has a fixing groove (6) on its upper side, and the fixing groove (6) is connected to the upper-level ring rigging (1).

3. The lifting ladder according to claim 1, characterized in that, The insert (4) has a connecting groove (7) on its lower side, which connects to the next level of auxiliary lock (2).

4. The lifting ladder according to claim 1, characterized in that, The auxiliary lock (2) enters the insert (4) to form a snap-fit ​​connection.

5. The lifting ladder according to claim 1, characterized in that, The locking component (3) uses a U-shaped buckle structure to clamp the ring rigging (1) and the auxiliary locking component (2) respectively.

6. The lifting ladder according to claim 1, characterized in that, The locking part (3) has a fastening screw (8) on its side surface that corresponds to the connecting groove (7).

7. The lifting ladder according to claim 6, characterized in that, The fastening screw (8) has a fixing rod (9) that is fastened to the locking member (3) and the auxiliary lock (2).

8. The lifting ladder according to claim 1, characterized in that, The locking component (3) allows the fixing rod (9) to open and close quickly by rotating the fastening screw (8), thus fixing the lock in place.

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