Modularized flexible connection cantilever lifting appliance
By using a modular flexible connection cantilever spreader with high-strength aluminum modules and guide columns, the variable radius of the cantilever spreader is achieved, solving the lifting problem of traditional cantilever cranes in confined spaces and providing a flexible equipment handling solution.
Patent Information
- Application Number
- CN202520105476.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Traditional cantilever cranes have a fixed radius, which cannot meet the needs of lifting and moving equipment in narrow spaces, especially when there are obstacles in the narrow space, making it difficult to operate flexibly.
The flexible cantilever spreader with a modular structure is formed by connecting a high-strength aluminum extrusion module body and guide columns to create a cantilever structure that can be freely bent and extended. Combined with cylinder drive, the radius of the cantilever spreader can be varied to meet the lifting needs of confined spaces.
It enables flexible lifting and handling in confined spaces, expanding the application range of the lifting equipment. It is suitable for working conditions in confined areas such as cabins, workshops, fan installation, and aircraft maintenance. Its modular design facilitates disassembly and assembly.
Smart Images

Figure CN224000937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of handling and lifting equipment technology, and in particular to a modular flexible connection cantilever lifting equipment. Background Technology
[0002] Currently, lifting and handling equipment is widely used, especially cantilever cranes, due to their mature technology and low cost. Cantilever cranes are generally column-mounted, with the column as the center of rotation and the length of the cantilever as the radius of the lifting device. The area covered by the lifting device is a fan-shaped region centered on the column and with the cantilever as the radius. The radius of the cantilever crane varies depending on the load, but is generally around 4 meters. While the radius and coverage area of a cantilever crane are fixed, real-world work often requires moving workpieces from an open space to a confined space with obstacles such as columns or equipment. Traditional cantilever cranes cannot adapt to these spatial changes, especially in confined spaces such as brick well platforms, wind turbine interiors, large ship equipment compartments, and engine compartments for maintenance and installation. In very compact and confined spaces, lifting and moving equipment is extremely inconvenient due to the non-extendable radius of the cantilever crane.
[0003] Therefore, there is an urgent need for a cantilever crane whose coverage radius can be arbitrarily bent and varied, which can extend and bend like a snake, and whose effective radius can be arbitrarily changed, so as to flexibly lift and transport equipment in confined spaces. Utility Model Content
[0004] This utility model addresses the shortcomings of traditional cantilever cranes by providing a modular, flexible cantilever lifting device that can flexibly change the radius of a traditional cantilever crane, enabling easy lifting and transport in confined spaces.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A modular flexible cantilever lifting device includes a guide post 1, a guide hole 2, a module body 3, a module cavity 4, and screw holes 5; wherein: as shown in the figure Figures 1-3 This utility model adopts a modular structure, using high-strength aluminum extrusion molding to prepare a hollow module body 3. The top and bottom of the module body 3 are both open. Figures 1-3 The module body 3 has module guide holes 2 on both sides, and a guide post 1 is inserted into the rightmost module guide hole 2. By inserting the upper and lower guide posts 1 into the adjacent module guide holes 2, the module body 3 is connected in series like a chain. The high-strength module body 3 is used to replace the traditional cantilever structure, so that the lifting device can bend and extend freely in the horizontal range. It can be transformed into several or even a dozen joints according to the needs of the site, and is not limited by the confined environment.
[0007] This utility model also has the following additional technical features:
[0008] As a further specific optimization of the technical solution of this utility model: the cavity of the module body 3 is a module cavity 4, and the cross-section of the module cavity 4 is circular; the module cavity 4 can be ground into a cylinder cavity for placing and installing cylinders.
[0009] As a further specific optimization of the technical solution of this utility model: a plurality of screw holes 5 are provided on the top and bottom outer sides of the module cavity 4, and the upper end cover and lower end cover of the cylinder are fixedly installed on the top and bottom of the module cavity 4 by means of bolts and screw holes 5.
[0010] As a further specific optimization of the technical solution of this utility model: such as Figure 4 As shown, the module bodies 3 are connected in series by guide posts 1 and fixed by anti-detachment pins 6 to prevent adjacent module bodies 3 from separating, so that all the module bodies 3 form a horizontal flexible cantilever that can be bent freely. One end of the flexible cantilever can be suspended by a pneumatic hoist or an electric hoist, with a maximum stroke radius of 4-5 meters and a minimum stroke radius of 0.5 meters.
[0011] As a further specific optimization of the technical solution of this utility model: Figure 5 The image shows the fully deployed form of the flexible spreading device. Figure 6 It is a flexible lifting device in the form of a bent form, which is composed of a column, a modular flexible connection cantilever lifting device and a lifting device to form a lifting device.
[0012] Compared with the prior art, the advantages of this utility model are:
[0013] Advantage 1: Traditional cantilever cranes require a space larger than the lifting radius; if the space is smaller, they cannot be used normally. This new type of flexible lifting device completely solves the space requirement, allowing for lifting and moving equipment even in confined spaces. The usable space for this flexible cantilever crane is only about one-fifth that of a traditional cantilever crane. It completely solves the lifting and moving needs in confined areas such as engine rooms, workshops, wind turbine installation and maintenance, and aircraft maintenance and installation, indicating a huge market potential.
[0014] Advantage 2: The individual modules of this utility model are not only components of the flexible cantilever crane, but each module can also form a large-diameter drive cylinder. Through the mechanism with other accessories, it can achieve the function of lifting the workpiece. Driven by compressed air, it is especially suitable for working conditions in explosion-proof areas.
[0015] Advantage 3: This utility model can be used not only in confined spaces such as brick well platforms, wind power maintenance, and marine engine room maintenance, but its modular structure can be freely added or shortened and can be easily disassembled. The anti-detachment pin 6 ensures a safe connection between modules and prevents modules from detaching.
[0016] Advantage 4: Each module of this utility model weighs approximately 20KG and can be easily disassembled. It can be used in various working conditions via different connecting accessories, such as containers, factory channel steel, and reliable rigid bases. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the module body 3 of this utility model;
[0018] Figure 2 This is a schematic diagram of the main structure of the module body 3 of this utility model;
[0019] Figure 3 This is a top view of the module body 3 of this utility model;
[0020] Figure 4 This is a schematic diagram of the overall structure of the flexible cantilever of this utility model;
[0021] Figure 5 This is a schematic diagram of the flexible cantilever lifting device of this utility model;
[0022] Figure 6 This is a schematic diagram of the flexible cantilever lifting device of this utility model.
[0023] Explanation of reference numerals in the attached diagram: 1. Guide post; 2. Guide hole; 3. Module body; 4. Module cavity; 5. Screw hole; 6. Anti-detachment pin. Detailed Implementation
[0024] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.
[0025] A modular flexible cantilever lifting device includes a guide post 1, a guide hole 2, a module body 3, a module cavity 4, and a screw hole 5.
[0026] like Figures 1-3 This utility model adopts a modular structure and is made of high-strength aluminum extrusion molding to form a cavity-shaped module body 3. The top and bottom of the module body 3 are both in a non-closed state.
[0027] like Figures 1-3The module body 3 has module guide holes 2 on both sides, and a guide post 1 is inserted into the rightmost module guide hole 2. By inserting the upper and lower guide posts 1 into the adjacent module guide holes 2, the module body 3 is connected in series like a chain. The high-strength module body 3 is used to replace the traditional cantilever structure, so that the lifting device can bend and extend freely in the horizontal range. It can be transformed into several or even a dozen joints according to the needs of the site, and is not limited by the confined environment.
[0028] The cavity of the module body 3 is the module cavity 4, and the cross-section of the module cavity 4 is circular; the module cavity 4 can be ground into a cylinder cavity for placing and installing cylinders.
[0029] The top and bottom outer sides of the module cavity 4 are provided with a number of screw holes 5. The upper end cover and lower end cover of the cylinder are fixedly installed on the top and bottom of the module cavity 4 by bolts and screw holes 5.
[0030] like Figure 4 As shown, the module bodies 3 are connected in series by guide posts 1 and fixed by anti-detachment pins 6 to prevent adjacent module bodies 3 from separating, so that all the module bodies 3 form a horizontal flexible cantilever that can be bent freely. One end of the flexible cantilever can be suspended by a pneumatic hoist or an electric hoist, with a maximum stroke radius of 4-5 meters and a minimum stroke radius of 0.5 meters.
[0031] Figure 5 The image shows the fully deployed form of the flexible spreading device. Figure 6 It is a flexible lifting device in the form of a bent form, which is composed of a column, a modular flexible connection cantilever lifting device and a lifting device to form a lifting device.
[0032] Operating method of modular flexible connection cantilever spreader:
[0033] Step 1: When using it, first connect each module body 3 in series through the guide post 1 and the module guide hole 2 to form a flexible cantilever that can be bent freely.
[0034] Step 2: As needed, use the anti-detachment pins 6 to fix the adjacent module bodies 3 to ensure that the modules do not detach from each other.
[0035] Step 3: Install the cylinder into the module cavity 4, and fix the upper and lower end caps of the cylinder to the top and bottom of the module cavity 4 through the screw holes 5.
[0036] Step 4: Suspend the lifting device, such as a pneumatic hoist or electric hoist, at one end of the flexible cantilever, and you can begin to use the modular flexible connection cantilever lifting device of this utility model for lifting and handling operations.
[0037] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
Claims
1. A modular flexible coupling spreader, characterized by: Including guide pillar (1), guide hole (2), module body (3), module cavity (4) and screw hole (5), wherein: the module body (3) is made of high-strength aluminum extrusion forming into a cavity, the top and bottom of the module body (3) are in a non-closed state; The two sides of the module body (3) are provided with module guide holes (2), and the rightmost module guide hole (2) is inserted with a guide pillar (1); The module body (3) is connected in series like a chain by inserting the upper and lower guide pillars (1) into the adjacent module guide holes (2).
2. A modular flexible coupling spreader according to claim 1, characterised in that: The cavity of the module body (3) is a module cavity (4), and the cross section of the module cavity (4) is circular; The module cavity (4) can be processed into a cylinder cavity by grinding, which is used for placing and installing a cylinder.
3. A modular, flexible coupling spreader according to claim 2, wherein: The top and bottom outside of the module cavity (4) are provided with a plurality of screw holes (5), and the upper end cover and the lower end cover of the cylinder are fixedly installed on the top and bottom of the module cavity (4) by cooperating with the bolt and the screw hole (5).
4. A modular, flexible coupling spreader according to claim 1, wherein: The module body (3) is connected in series by the guide pillar (1) and fixed by the anti-drop pin (6) to prevent the adjacent module bodies (3) from being separated, so that all the module bodies (3) form a horizontal flexible cantilever which can be freely bent.
5. A modular, flexible coupling spreader according to claim 4, wherein: One end of the flexible cantilever can hang a pneumatic or electric hoist.
6. A modular, flexible coupling spreader according to claim 4, wherein: The maximum radius of the flexible cantilever is 4-5 meters, and the minimum radius is 0.5 meters.
7. A modular, flexible coupling spreader according to claim 1, wherein: A set of lifting device is composed of a stand, a modular flexible connecting cantilever lifting device and a lifting device.