Bistable vehicle single-lifting-point cooperative lifting device

Abstract

The utility model discloses a kind of double-stable vehicle single-lifting point cooperative hoisting device, main pulley, auxiliary pulley, fixed assembly and connecting assembly, main pulley is set in hoisting device middle part, auxiliary pulley is equipped with multiple and respectively located the upper and lower sides of main pulley, fixed assembly is used to fix main pulley and auxiliary pulley, connecting assembly is used to connect the steel wire rope of external stable vehicle.This device is composed of a large main pulley and four small auxiliary pulleys, integrates force transmission and cooperative control mechanism, which not only changes the size and direction of force, but also supports simultaneous lifting of multiple objects, and allows large-scale swinging, reducing the frequency of lifting point replacement.

Description

Technical Field

[0001] This utility model relates to the technical field of large component lowering in underground mine shafts during infrastructure construction and large component hoisting for surface building construction, specifically to a dual-stabilized single-point collaborative hoisting device. Background Technology

[0002] In the field of hoisting, movable pulley systems are widely used in everyday and industrial scenarios, such as cranes, hoists, elevators, and flagpole installations. These systems primarily achieve labor-saving effects by altering the magnitude of force; a simple movable pulley can halve the required pulling force. However, they have significant limitations. Ordinary movable pulley systems can only handle the lifting of single objects and cannot effectively change the direction of force, limiting their application in complex environments (such as narrow shafts or construction sites requiring multi-directional swinging). For example, during the mine infrastructure construction phase, when lowering large components into the shaft, traditional pulley systems, while able to adjust the magnitude and direction of force, still only support single-piece hoisting. This leads to low operational efficiency, limited swing space for the lifted components, and the need for frequent changes in lifting points to adjust their position, which is not only time-consuming but also relies heavily on manual intervention, easily causing safety hazards. Furthermore, when using two jacks working in tandem, problems such as load imbalance, wire rope entanglement, or equipment damage often occur due to asynchronous operation or mismatched lowering speeds. This technical bottleneck is particularly prominent on sites lacking large-tonnage jacks, forcing construction units to use smaller equipment for multiple operations, increasing costs and risks. Utility Model Content

[0003] The purpose of this utility model is to at least partially solve one of the aforementioned technical problems.

[0004] Therefore, the purpose of this utility model is to propose a dual-stabilized single-lifting-point collaborative lifting device, which consists of a large main pulley and four small auxiliary pulleys, innovatively integrating force transmission and collaborative control mechanisms. It not only changes the magnitude and direction of the force, but also supports the simultaneous lifting of multiple objects and allows for a wide range of swinging, reducing the frequency of lifting point changes.

[0005] To achieve the above objectives, one embodiment of this utility model proposes a dual-stabilized vehicle single-lifting-point collaborative lifting device, comprising:

[0006] Main pulley, auxiliary pulley, fixing components, and connecting components;

[0007] The main pulley is located in the middle of the dual-stabilized single-point collaborative hoisting device. Multiple auxiliary pulleys are provided and are located on the upper and lower sides of the main pulley respectively. The fixing component is used to fix the main pulley and the auxiliary pulleys. The connecting component is used to connect the steel wire rope of the external stabilizing vehicle.

[0008] According to one embodiment of the present invention, the fixing component includes two oppositely arranged thick steel plates, and the main pulley and the auxiliary pulley are both installed between the two thick steel plates;

[0009] A reinforcing rib is provided between the two thick steel plates, and the reinforcing rib is fixedly connected to the two thick steel plates respectively.

[0010] According to one embodiment of the present invention, four auxiliary pulleys are provided, two of which are located on the upper side of the main pulley and the other two are located on the lower side of the main pulley.

[0011] According to one embodiment of the present invention, the connecting assembly includes a steel wire rope that passes around the main pulley, with both ends of the steel wire rope used to connect two stabilizing vehicles, and a sliding distance is reserved between the steel wire rope and the main pulley.

[0012] According to one embodiment of the present invention, the two auxiliary pulleys located on the upper side serve as guide wheels for guiding the steel wire rope connecting the stabilizing vehicle.

[0013] According to one embodiment of the present invention, the two auxiliary pulleys located on the lower side can be replaced with U-shaped shackles for connecting and hoisting heavy objects.

[0014] According to one embodiment of the present invention, the thick steel plate is connected to the main pulley and the auxiliary pulley via a shaft, and both ends of the shaft are fixed to the thick steel plate.

[0015] According to one embodiment of the present invention, the thick steel plate is provided with a plurality of mounting holes for fixing the position of the dual-stabilized single-point collaborative lifting device by fasteners.

[0016] According to one embodiment of the present invention, the diameter of the main pulley is larger than the diameter of the auxiliary pulley, and the main pulley serves as the main load-bearing component.

[0017] According to one embodiment of the present invention, the groove surfaces of both the main pulley and the auxiliary pulley are provided with a wear-resistant layer.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0019] Compared with the prior art, the beneficial effects of the embodiments of this application are:

[0020] This invention provides a dual-stabilized single-point collaborative lifting device, which consists of a large main pulley and four small auxiliary pulleys, innovatively integrating force transmission and collaborative control mechanisms. It not only changes the magnitude and direction of the force but also supports the simultaneous lifting of multiple objects and allows for a wide range of swinging, reducing the frequency of lifting point changes.

[0021] To better understand the technical means of this utility model and to facilitate its implementation according to the description, and to make the above and other objects, features, and advantages of this utility model more apparent, preferred embodiments are described below in detail with reference to the accompanying drawings. Other features and advantages of this utility model will be set forth in the following description and will be apparent in part from the description, or may be realized by practicing the utility model. The objects and other advantages of this utility model can be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any inventive effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a dual-stabilized vehicle single-lifting-point collaborative lifting device according to an embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of a dual-stabilized vehicle single-lifting-point collaborative lifting device provided according to an embodiment of the present invention; Attached image description:

[0026] 100-Dual-Stable Vehicle Single-Lifting-Point Collaborative Lifting Device;

[0027] 1-Main pulley; 2-Auxiliary pulley; 3-Fixing component; 4-Connecting component; 5-Reinforcing rib; 6-U-shaped shackle; 7-Mounting hole. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the field of hoisting, movable pulley systems are widely used in everyday and industrial scenarios, such as cranes, hoists, elevators, and flagpole installations. These systems primarily achieve labor-saving effects by altering the magnitude of force; a simple movable pulley can halve the required pulling force. However, they have significant limitations. Ordinary movable pulley systems can only handle the lifting of single objects and cannot effectively change the direction of force, limiting their application in complex environments. For example, during the construction phase of a mine, when lowering large components into the shaft, traditional pulley systems, while able to adjust the magnitude and direction of force, still only support single-piece hoisting. This leads to low operational efficiency, limited swing space for the hoisted component, and the need for frequent changes in lifting points to adjust its position. This is not only time-consuming but also relies heavily on manual intervention, easily leading to safety hazards. Furthermore, when using two hoisting jacks in tandem, problems such as load imbalance, wire rope entanglement, or equipment damage often occur due to asynchronous operation or mismatched lowering speeds. This technical bottleneck is particularly prominent in sites lacking large-tonnage hoisting jacks, forcing construction units to use smaller equipment for multiple operations, increasing costs and risks.

[0030] To address this issue, this invention proposes a dual-stabilized single-lifting-point collaborative lifting device. This device consists of a large main pulley and four small auxiliary pulleys, innovatively integrating force transmission and collaborative control mechanisms. It not only alters the magnitude and direction of the force but also supports the simultaneous lifting of multiple objects and allows for a wide range of swinging motion, reducing the frequency of lifting point changes.

[0031] Specifically, the following describes an embodiment of the present invention with reference to the accompanying drawings: a dual-stabilized vehicle with a single lifting point for coordinated hoisting.

[0032] Figure 1 This is a schematic diagram of the overall structure of a dual-stabilized vehicle single-lifting-point collaborative lifting device according to an embodiment of the present invention. Figure 2 This is a cross-sectional view of a dual-stabilized single-lifting-point collaborative lifting device according to an embodiment of the present invention.

[0033] Please refer to Figures 1-2 This embodiment provides a dual-stabilized vehicle single-point collaborative lifting device, which includes:

[0034] Main pulley 1, auxiliary pulley 2, fixing component 3, and connecting component 4;

[0035] The main pulley 1 is located in the middle of the dual-stabilized single-lifting-point collaborative lifting device 100. Multiple auxiliary pulleys 2 are provided and located on the upper and lower sides of the main pulley 1 respectively. The fixing component 3 is used to fix the main pulley 1 and the auxiliary pulleys 2. The connecting component 4 is used to connect the steel wire rope of the external stabilizing vehicle.

[0036] It should be noted that the main pulley 1 is the core component of the device, located in the middle of the entire device, serving as the core load-bearing and transmission node for the hoisting operation; there are multiple auxiliary pulleys 2, at least four, distributed on the upper and lower sides of the main pulley 1, forming a symmetrical or asymmetrical auxiliary support structure; the function of the fixing component 3 is to fix the main pulley 1 and all the auxiliary pulleys 2 into a whole, ensuring that the position of each component is stable and does not undergo relative displacement during the hoisting process; the connecting component 4 is the connecting bridge between the device and the external stabilizing vehicle, realizing power transmission through the steel wire rope connecting the stabilizing vehicle, and finally completing the hoisting action.

[0037] Through the above structural relationships, the core components and layout of the device are clarified. The combined structure of main pulley 1 and auxiliary pulley 2 realizes the coordinated linkage between the dual-stabilized car and the single lifting point, solving the problems of limited lifting load of the traditional single-stabilized car and difficulty in synchronously controlling the single lifting point of the dual-stabilized car. The modular component design (separation of fixed component 3 and connecting component 4) makes the device structure clear, which is convenient for manufacturing, assembly and subsequent maintenance. The vertical distribution of auxiliary pulley 2 provides a basis for the guidance and load-bearing distribution of the wire rope, and reserves space for subsequent functional expansion (such as guidance, replacement of shackles, etc.), thus improving the versatility of the device.

[0038] In one embodiment of the present invention, the fixing component 3 includes two thick steel plates arranged opposite each other, and the main pulley 1 and the auxiliary pulley 2 are both installed between the two thick steel plates;

[0039] A reinforcing rib 5 is provided between the two thick steel plates, and the reinforcing rib 5 is fixedly connected to the two thick steel plates respectively.

[0040] It should be noted that the fixing component 3 specifically adopts two oppositely arranged thick steel plates as the main structure. The main pulley 1 and all auxiliary pulleys 2 are clamped between these two thick steel plates and fixed to the thick steel plates through shafts or other connecting parts. In order to further enhance the connection strength and overall rigidity of the two thick steel plates, reinforcing ribs 5 are welded or bolted between the two thick steel plates. The two ends of the reinforcing ribs 5 are fixed to the inner surfaces of the two thick steel plates respectively, forming a frame structure of steel plates + reinforcing ribs.

[0041] The aforementioned thick steel plates possess high strength and rigidity, effectively bearing radial and axial forces during hoisting as a fixed foundation, preventing component deformation. The addition of reinforcing rib 5 further enhances the connection stability of the two thick steel plates, preventing relative bending or separation of the plates under heavy loads, thus strengthening the overall structural strength and deformation resistance of the device. The overall frame structure provides a stable installation foundation for the pulleys, ensuring coaxiality and stability during rotation and reducing load fluctuations caused by structural swaying.

[0042] In one embodiment of this utility model, four auxiliary pulleys 4 are provided, two of which are located on the upper side of the main pulley 1 and the other two are located on the lower side of the main pulley 1.

[0043] It should be noted that the number of auxiliary pulleys 2 is limited to four. Two of the auxiliary pulleys 2 are symmetrically or asymmetrically distributed on the upper side of the main pulley 1 (near the top of the device), and the other two are symmetrically or asymmetrically distributed on the lower side of the main pulley 1 (near the bottom of the device), forming a symmetrical auxiliary support structure of two on top and two on the bottom.

[0044] The distribution of the four auxiliary pulleys 2, with two on the top and two on the bottom, achieves a balanced distribution of force, preventing excessive force on a single auxiliary pulley and thus avoiding wear or damage. The two upper auxiliary pulleys 2 can work together to guide the wire rope at multiple angles, while the two lower ones can work together to bear the hoisting load or connect heavy objects, improving the stability of the device under complex working conditions. The symmetrical distribution reduces the eccentric load on the device during hoisting, reduces the overall sway caused by uneven force, and improves the hoisting accuracy.

[0045] In one embodiment of the present invention, the connecting component 4 includes a steel wire rope that passes around the main pulley 1, with both ends of the steel wire rope used to connect two stabilizing vehicles, and a sliding distance is reserved between the steel wire rope and the main pulley 1.

[0046] It should be noted that the core of the connecting component 4 is a steel wire rope that passes around the groove of the main pulley 1. The two ends of the steel wire rope are connected to two external stabilizers (one stabilizer connects to one end), forming a closed-loop transmission of double stabilizers-steel wire rope-main pulley 1. At the same time, a certain sliding distance is reserved between the steel wire rope and the groove of the main pulley 1 (that is, the steel wire rope is not completely taut and fits the groove, allowing slight sliding along the groove when the force changes).

[0047] The above structure enables the two stabilizers to be connected to the two ends of the wire rope respectively, and the coordinated drive of a single lifting point can be achieved through synchronous control, which improves the power output and load capacity of the lifting (the load of a single lifting point can be close to the combined force of the two stabilizers); the reserved sliding distance provides a buffer space for the synchronization error of the two stabilizers, avoiding rigid tension of the wire rope caused by slight differences in the speed and tension of the stabilizers, and reducing the wear of the wire rope and the main pulley; the flexible cooperation between the wire rope and the main pulley 1 improves the impact resistance of the device, and can absorb part of the impact load through sliding at the moment of lifting or braking of the heavy object.

[0048] In one embodiment of this utility model, the two auxiliary pulleys 2 located on the upper side serve as guide wheels for guiding the steel wire rope connecting the stabilizing vehicle.

[0049] It should be noted that the two auxiliary pulleys 2 located on the upper side of the main pulley 1 are explicitly assigned a guiding function and are used as guide wheels. When the steel wire rope connecting the stabilizing car is led out from the stabilizing car, it must first pass around these two upper auxiliary pulleys 2 before connecting to the main pulley 1 or other parts of the device; by adjusting the angle and position of the upper auxiliary pulleys 2, the direction of the steel wire rope can be changed to conform to the force direction of the main pulley 1 or to avoid other obstacles.

[0050] The aforementioned guiding function ensures that the wire rope maintains a reasonable force angle during transmission, preventing friction or jamming between the wire rope and other components of the device, and reducing abnormal wear. The guiding angle can be flexibly adjusted according to the installation position of the stable vehicle on site, improving the device's adaptability to different working environments. The guiding effect of the guide wheel makes the tension direction of the wire rope more stable, reducing the risk of off-center loading caused by force direction deviation of the main pulley 1, and extending the service life of the main pulley.

[0051] In one embodiment of this utility model, the two auxiliary pulleys 2 located on the lower side can be replaced with U-shaped shackles 6 for connecting and hoisting heavy objects.

[0052] It should be noted that the two auxiliary pulleys 2 located below the main pulley 1 are not fixed structures. They can be disassembled and replaced with U-shaped shackles 6 according to the hoisting requirements. The U-shaped shackle 6 is a standard lifting connector. Its two ends can be fixed to the original installation position of the auxiliary pulleys 2 by pins, and the other end can be directly connected to the heavy object (such as through a hook, chain, etc.) to realize the hoisting of the heavy object.

[0053] The above-mentioned functional switching of the lower components of the device is realized. The auxiliary pulley 2 can be used in scenarios that require multi-rope coordinated hoisting (such as distributed load), while the U-shaped shackle 6 is suitable for simple scenarios that directly connect heavy objects, which greatly improves the versatility of the device. As a standard part, the U-shaped shackle 6 is reliable in connection and easy to disassemble, which reduces the cost and time of changing the type under different hoisting conditions. For heavy objects of different weights and shapes, the device can be adapted by replacing the U-shaped shackle 6 with different specifications, which expands the hoisting range of the device.

[0054] In one embodiment of this utility model, the thick steel plate is connected to the main pulley 1 and the auxiliary pulley 2 by a shaft, and both ends of the shaft are fixed to the thick steel plate.

[0055] It should be noted that the main pulley 1 and the auxiliary pulley 2 are connected to the thick steel plate of the fixed component 3 through a shaft. The shaft is usually made of high-strength alloy steel (such as No. 45 steel or alloy steel), and its two ends are fixed to the corresponding positions of the two thick steel plates by bolts, pins or welding. The pulley has a shaft hole in the center, which is fitted onto the shaft and can rotate freely around the shaft (a bearing is usually provided between the shaft and the pulley to reduce friction).

[0056] The aforementioned shaft connection method ensures the installation stability of the pulley, prevents axial movement of the pulley during rotation, and guarantees the safety of the hoisting process. The two ends of the shaft are fixed to thick steel plates, which transfers the load borne by the pulley to the entire fixed assembly, thereby distributing the load and reducing local stress. The rotational fit between the shaft and the pulley (with bearings) reduces frictional resistance, making the pulley rotate more smoothly and reducing energy loss and component wear.

[0057] In one embodiment of this utility model, the thick steel plate is provided with a plurality of mounting holes 7 for fixing the position of the dual-stabilized single-point collaborative lifting device 100 by fasteners.

[0058] It should be noted that multiple mounting holes 7 are machined on the thick steel plate of the fixing component 3. These mounting holes 7 are usually distributed along the edge of the steel plate or in a symmetrical position, and the hole diameter matches common fasteners (such as bolts, expansion screws, locating pins, etc.). When installing the device, the overall position of the device can be fixed by passing the fasteners through the mounting holes 7 and connecting them to the external foundation (such as a crane frame, platform, etc.).

[0059] The design of the multiple mounting holes 7 mentioned above allows the device to be fixed on different types of foundation structures (such as steel frame, concrete platform, etc.), improving installation flexibility; the fasteners rigidly connect the device to the foundation through the mounting holes 7, preventing displacement or shaking of the device during hoisting and ensuring operational stability; the distribution of the mounting holes 7 can be designed according to actual stress requirements to achieve uniform load transfer and reduce local bearing pressure on the foundation.

[0060] In one embodiment of this utility model, the diameter of the main pulley 1 is larger than the diameter of the auxiliary pulley 2, and the main pulley 1 serves as the main load-bearing component.

[0061] It should be noted that the diameter of the main pulley 1 is larger than that of the auxiliary pulley 2, and the structural design of the main pulley 1 (such as groove depth, material strength, bearing capacity, etc.) is aimed at bearing the main lifting load, and it is the core load-bearing component of the device; the auxiliary pulley 2 mainly undertakes the functions of guiding, assisting in load bearing or distributing load, and its smaller diameter can reduce material consumption and the overall volume of the device.

[0062] The clear division of functions allows the main pulley 1 to focus on bearing the main load, and the increased diameter reduces the force per unit area (the larger the diameter, the larger the contact area between the wheel groove and the wire rope), thus improving load-bearing safety. The smaller diameter of the auxiliary pulley 2 reduces the overall size and weight of the device, making it easier to handle and install, while also reducing manufacturing costs. As the core load-bearing component, the main pulley 1 can further enhance its load-bearing capacity through reinforced design (such as thickening the wheel body and using high-strength materials) to meet the needs of large-tonnage hoisting.

[0063] In one embodiment of this utility model, the groove surfaces of both the main pulley 1 and the auxiliary pulley 2 are provided with a wear-resistant layer.

[0064] It should be noted that the groove surfaces of both the main pulley 1 and the auxiliary pulley 2 are provided with a wear-resistant layer. This wear-resistant layer can be formed by spraying wear-resistant alloys (such as tungsten carbide), overlaying wear-resistant materials, or pasting wear-resistant liners. Its hardness is higher than that of the pulley body material, and it can directly contact the wire rope and withstand friction.

[0065] The aforementioned wear-resistant layer significantly improves the wear resistance of the wheel groove surface, reduces frictional loss between the wire rope and the wheel groove, and extends the service life of the pulley and wire rope; it reduces the frequency of pulley replacement due to wheel groove wear, reducing maintenance costs and downtime; the wear-resistant layer maintains the stability of the wheel groove shape, preventing the wire rope from jumping out of the groove or uneven stress due to wear, thus improving the safety of hoisting operations.

[0066] The beneficial effects of this utility model of a dual-stabilized vehicle single-lifting-point collaborative lifting device are as follows:

[0067] The device consists of a large main pulley 1 and four small auxiliary pulleys 4, innovatively integrating force transmission and collaborative control mechanisms. It not only changes the magnitude and direction of force but also supports the simultaneous lifting of multiple objects and allows for a wide range of swings, reducing the frequency of lifting point changes.

[0068] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

[0069] Furthermore, although the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. Multitasking and parallel processing may be advantageous in certain environments. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0070] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0071] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are 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, improvements, etc., made within the spirit and principles of this utility model are included within the scope of the claims of this utility model pending approval.

Claims

1. A dual-stabilized vehicle single-point collaborative lifting device, characterized in that, include: Main pulley (1), auxiliary pulley (2), fixing component (3) and connecting component (4); The main pulley (1) is located in the middle of the dual-stabilized single-point coordinated lifting device (100), the auxiliary pulley (2) is provided in multiple parts and is located on the upper and lower sides of the main pulley (1), the fixing component (3) is used to fix the main pulley (1) and the auxiliary pulley (2), and the connecting component (4) is used to connect the steel wire rope of the external stabilized vehicle.

2. The dual-stabilized single-lifting-point collaborative lifting device according to claim 1, characterized in that, The fixing component (3) includes two thick steel plates arranged opposite each other, and the main pulley (1) and the auxiliary pulley (2) are both installed between the two thick steel plates; A reinforcing rib (5) is provided between the two thick steel plates, and the reinforcing rib (5) is fixedly connected to the two thick steel plates respectively.

3. The dual-stabilized vehicle single-lifting-point collaborative lifting device according to claim 1, characterized in that, The auxiliary pulleys (2) are provided in four parts, two of which are located on the upper side of the main pulley (1) and the other two are located on the lower side of the main pulley (1).

4. The dual-stabilized single-lifting-point collaborative lifting device according to claim 1, characterized in that, The connecting component (4) includes a steel wire rope that passes around the main pulley (1), with the two ends of the steel wire rope used to connect two stable cars respectively, and a sliding distance is reserved between the steel wire rope and the main pulley (1).

5. The dual-stabilized vehicle single-lifting-point collaborative lifting device according to claim 3, characterized in that, The two auxiliary pulleys (2) located on the upper side serve as guide wheels to guide the steel wire rope connecting the stabilizing vehicle.

6. The dual-stabilized single-point collaborative lifting device according to claim 5, characterized in that, The two auxiliary pulleys (2) located on the lower side can be replaced with U-shaped shackles (6) for connecting and hoisting heavy objects.

7. The dual-stabilized vehicle single-lifting-point collaborative lifting device according to claim 2, characterized in that, The thick steel plate is connected to the main pulley (1) and the auxiliary pulley (2) by a shaft, and both ends of the shaft are fixed to the thick steel plate.

8. The dual-stabilized vehicle single-lifting-point collaborative lifting device according to claim 2, characterized in that, The thick steel plate is provided with multiple mounting holes (7) for fixing the position of the dual-stabilized single-point collaborative lifting device (100) by fasteners.

9. The dual-stabilized vehicle single-lifting-point collaborative lifting device according to claim 1, characterized in that, The diameter of the main pulley (1) is larger than the diameter of the auxiliary pulley (2), and the main pulley (1) serves as the main load-bearing component.

10. The dual-stabilized vehicle single-lifting-point collaborative lifting device according to claim 1, characterized in that, The groove surfaces of both the main pulley (1) and the auxiliary pulley (2) are provided with a wear-resistant layer.

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