Winch lifting device for semitrailer

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a winch lifting device for a semitrailer, which comprises a semitrailer body and box-type goods, a hydraulic tail plate for loading is arranged at the right end of the semitrailer body, a hanging ring is installed at the left end of the box type goods, an auxiliary roller device is arranged at the position, close to the hydraulic tail plate, of the upper surface of the semitrailer body, and at least one lifting type roller device is arranged in the middle of the upper surface of the semitrailer body. Capstan mechanisms are arranged on the front and rear sides of the left end of the upper surface of the semi-trailer body; through cooperative operation of the hydraulic capstan and the multi-stage roller device, the cargo self-loading function is achieved, the traditional complex process depending on external hoisting is simplified into integrated operation, and the operation time is greatly shortened; the rolling friction design of the roller assembly effectively reduces the moving resistance of goods, the adjustable lifting structure is combined, the device can adapt to limited spaces such as narrow roadways and the like, the requirements of different terrains for ground bearing capacity can be met, and the harsh limitation of traditional hoisting on operation sites is broken through.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically a winch lifting device for a semi-trailer. Background Technology

[0002] Currently, the most common flatbed semi-trailer trailers on the market rely heavily on heavy-duty truck cranes and other auxiliary equipment for loading oversized goods such as prefabricated container houses. This traditional loading method has significant technical drawbacks: First, the purchase and rental costs of loading equipment are high, often requiring a truck crane of 25 tons or more for a single lifting operation, leading to a substantial increase in operating costs for logistics companies. Second, the operation process is complex and time-consuming, requiring multiple people to work together from equipment arrival and outrigger positioning to hoisting and placement, with an average loading time exceeding 2 hours, severely impacting transportation efficiency.

[0003] In addition, traditional hoisting techniques have stringent requirements for the work site. Because a truck crane requires at least 8 meters of working space to extend its outriggers, and must meet the mandatory requirement that the ground bearing capacity is not less than 10 tons per square meter, it is difficult to achieve in confined working environments such as urban alleys and temporary roads on construction sites.

[0004] More importantly, there are serious safety hazards during the hoisting process. When hoisting container houses with a height exceeding 3 meters, the large volume and wide windward area of ​​the cargo make them highly susceptible to swaying due to wind disturbances or improper operation, resulting in uneven stress on the slings. Utility Model Content

[0005] This application provides a winch lifting device for a semi-trailer, driven by a hydraulic power winch, and in conjunction with a lifting roller device and an auxiliary roller device. It utilizes the roller principle to achieve point or line contact between the cargo and the roller, facilitating towing and loading. Powered by the tractor, it eliminates the need for other lifting equipment, making loading quick and convenient, improving efficiency, reducing costs, and ensuring a safe and reliable process. It can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a winch lifting device for a semi-trailer, comprising a semi-trailer body and a box-type cargo; a loading hydraulic tailgate is provided at the right end of the semi-trailer body, a lifting ring is installed at the left end of the box-type cargo, an auxiliary roller device is provided on the upper surface of the semi-trailer body near the hydraulic tailgate, at least one lifting roller device is provided in the middle of the upper surface of the semi-trailer body, and winch mechanisms are provided on both the front and rear sides of the left end of the upper surface of the semi-trailer body.

[0007] The winch mechanism includes a winch bracket mounted on the semi-trailer body, a drum rotatably connected to the winch bracket, a hydraulic motor mounted on the outer side of the winch bracket, the output shaft of the hydraulic motor being connected to the end of the drum via a coupling, a towing cable wound on the outer side of the drum, and a winch hook at the end of the towing cable, which is attached to a lifting ring on the outer side of the box-shaped cargo.

[0008] Preferably, there are two auxiliary roller devices, which are symmetrically arranged at the front and rear ends of the upper surface of the semi-trailer body.

[0009] Preferably, the auxiliary roller device includes a first roller, which is rotatably connected to the semi-trailer body, and the upper end of the outer side of the semi-trailer body protrudes from the upper surface of the semi-trailer body.

[0010] Preferably, the lifting roller device includes a hydraulic telescopic rod, the telescopic end of which is equipped with a lifting bracket, and the lifting bracket is rotatably connected to the second roller via a bearing.

[0011] Preferably, a hydraulic station is rotatably mounted on the upper surface of the semi-trailer body, and the hydraulic station is equipped with a control handle for controlling the operation of the hydraulic motor.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] 1. This application achieves self-loading of goods through the coordinated operation of a hydraulic winch and a multi-stage roller device, simplifying the complex process of traditional external hoisting into an integrated operation and significantly shortening the operation time. The rolling friction design of the roller assembly effectively reduces the resistance to the movement of goods. Combined with the adjustable lifting structure, it can adapt to restricted spaces such as narrow alleys and meet the requirements of different terrains for ground bearing capacity, breaking through the harsh limitations of traditional hoisting on the work site.

[0014] 2. This application directly utilizes the power of the tractor to drive the hydraulic system, eliminating the need for additional hoisting equipment rental and dispatching costs, and reducing manpower input; the modular design of the mechanical structure not only reduces maintenance complexity, but also allows for flexible adjustment of the roller layout according to cargo specifications, enabling rapid deployment and precise control, thereby improving the economy and ease of operation of the overall transportation process;

[0015] 3. By using dual winches for synchronous control, the center of gravity of the cargo is kept within a safe threshold, effectively suppressing the risk of swaying during loading; this solves the problem of cargo imbalance that is easily caused by traditional hoisting, ensuring safe and reliable operation throughout the entire process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 This is the main view of this application;

[0018] Figure 3 This is a schematic diagram of the winch mechanism.

[0019] In the diagram: 1. Winch mechanism, 11. Winch support, 12. Drum, 13. Hydraulic motor, 2. Hydraulic station, 3. Control handle, 4. Towing cable, 5. Lifting roller device, 51. Roller II, 52. Lifting support, 53. Hydraulic telescopic rod, 6. Auxiliary roller device, 7. Box-type cargo, 8. Semi-trailer body. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 2 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0022] Please see Figure 1-3 This application provides the following technical solution: a winch lifting device for a semi-trailer, comprising a semi-trailer body 8 and a box-type cargo 7; the right end of the semi-trailer body 8 is provided with a loading hydraulic tail plate, the left end of the box-type cargo 7 is provided with a lifting ring, the upper surface of the semi-trailer body 8 is provided with an auxiliary roller device 6 near the hydraulic tail plate, the middle of the upper surface of the semi-trailer body 8 is provided with at least one lifting roller device 5, and the upper surface of the semi-trailer body 8 is provided with winch mechanisms 1 on both the front and rear sides of the left end of the upper surface.

[0023] Specifically, the winch mechanism 1 is started, and the winch mechanism 1 pulls the box cargo 7 towards the semi-trailer body 8 by winding and pulling the towing steel cable 4 until the box cargo 7 is dragged onto the semi-trailer body 8. During the loading process of the box cargo 7, the auxiliary roller device 6 and the lifting roller device 5 are used to convert sliding friction into rolling friction, which greatly reduces the loading resistance of the box cargo 7.

[0024] The winch mechanism 1 includes a winch bracket 11 mounted on the semi-trailer body 8. A drum 12 is rotatably connected to the winch bracket 11. A hydraulic motor 13 is mounted on the outer side of the winch bracket 11. The output shaft of the hydraulic motor 13 is connected to the end of the drum 12 via a coupling. A towing cable 4 is wound around the outer side of the drum 12. A winch hook is provided at the end of the towing cable 4. The winch hook is hung on a lifting ring on the outer side of the box cargo 7.

[0025] Specifically, the hydraulic motor 13 drives the drum 12 to rotate, which enables the winding of the towing cable 4, and the towing cable 4 pulls the box cargo 7 toward the upper surface of the semi-trailer body 8.

[0026] Furthermore, there are two auxiliary roller devices 6, which are symmetrically arranged at the front and rear ends of the upper surface of the semi-trailer body 8.

[0027] Specifically, the auxiliary roller device 6 facilitates the rapid loading of box-type cargo 7.

[0028] Furthermore, the auxiliary roller device 6 includes a roller one, which is rotatably connected to the semi-trailer body 8, and the upper end of the outer side of the semi-trailer body 8 protrudes from the upper surface of the semi-trailer body 8.

[0029] Furthermore, the lifting roller device 5 includes a hydraulic telescopic rod 53, and a lifting bracket 52 is installed at the telescopic end of the hydraulic telescopic rod 53. The lifting bracket 52 is rotatably connected to the roller 51 through a bearing.

[0030] Specifically, the hydraulic telescopic rod 53 can move the second roller 51 up and down by extending and retracting, which facilitates the concealment of the second roller 51.

[0031] Furthermore, a hydraulic station 2 is rotatably mounted on the upper surface of the semi-trailer body 8, and the hydraulic station 2 is equipped with a control handle 3 for controlling the operation of the hydraulic motor 13.

[0032] Specifically, the hydraulic motor 13 and the hydraulic telescopic rod 53 can be controlled by the control handle 3.

[0033] This application utilizes a hydraulically powered winch, which, in conjunction with a lifting drum 5 and an auxiliary drum device 6, to tows and loads goods. No other lifting machinery is required, making operation convenient and fast. This device boasts high loading efficiency, low operating costs, safe and stable loading process, simple structure, and small space occupation. It can also be installed on ordinary semi-trailer trailers.

[0034] In use: Start the hydraulic station 2, control the operating handle 3 to make the hydraulic motor 13 drive the drum 12 to rotate, the tow cable 4 is connected to the winch hook and drags the box-type cargo 7, and with the help of the lifting roller device 5 and the auxiliary roller device 6, the roller is raised to a height higher than the trailer floor and the cargo is dragged and loaded onto any position on the semi-trailer cargo flatbed, the roller is lowered and the cargo is placed flat on the semi-trailer body 8, and the loading is completed.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A winch lifting device for a semi-trailer, comprising a semi-trailer body (8) and a box-type cargo (7); wherein the right end of the semi-trailer body (8) is provided with a loading hydraulic tailgate, and the left end of the box-type cargo (7) is equipped with a lifting ring, characterized in that: The upper surface of the semi-trailer body (8) is provided with an auxiliary roller device (6) near the hydraulic tail plate, and the middle of the upper surface of the semi-trailer body (8) is provided with at least one lifting roller device (5). The upper surface of the semi-trailer body (8) is provided with a winch mechanism (1) on both the front and rear sides of the left end. The winch mechanism (1) includes a winch bracket (11) mounted on the semi-trailer body (8), a drum (12) is rotatably connected to the winch bracket (11), a hydraulic motor (13) is mounted on the outer side of the winch bracket (11), the output shaft of the hydraulic motor (13) is connected to the end of the drum (12) through a coupling, a towing cable (4) is wound on the outer side of the drum (12), and a winch hook is provided at the end of the towing cable (4), and the winch hook is hung on the lifting ring on the outer side of the box cargo (7).

2. The winch lifting device for a semi-trailer according to claim 1, characterized in that: The number of auxiliary roller devices (6) is two, and the two auxiliary roller devices (6) are symmetrically arranged at the front and rear ends of the upper surface of the semi-trailer body (8).

3. The winch lifting device for a semi-trailer according to claim 2, characterized in that: The auxiliary roller device (6) includes a roller, which is rotatably connected to the semi-trailer body (8). The upper part of the outer side of the semi-trailer body (8) protrudes from the upper surface of the semi-trailer body (8).

4. The winch lifting device for a semi-trailer according to claim 1, characterized in that: The lifting roller device (5) includes a hydraulic telescopic rod (53), and a lifting bracket (52) is installed at the telescopic end of the hydraulic telescopic rod (53). The lifting bracket (52) is rotatably connected to the second roller (51) through a bearing.

5. A winch lifting device for a semi-trailer according to claim 1, characterized in that: A hydraulic station (2) is rotatably mounted on the upper surface of the semi-trailer body (8), and the hydraulic station (2) is equipped with a control handle (3) for controlling the operation of the hydraulic motor (13).

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