Large spiral auger snow pressing device
By employing a dual extrusion structure with variable pitch blades and a variable diameter snow outlet, along with a double-layer hollow cylinder heating system, the problems of snow compaction and low-temperature operation have been solved, achieving efficient and low-cost snow removal and transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SINOTRUK LIUZHOU YUNLI SPECIAL PURPOSE VEHICLES
- Filing Date
- 2026-03-31
- Publication Date
- 2026-05-05
AI Technical Summary
Existing snow removal equipment cannot effectively compact loose snow in large-area snow accumulation scenarios, resulting in low transportation efficiency, high energy consumption, easy equipment jamming, and inability to adapt to low-temperature environments, affecting the continuity of operations and costs.
It adopts a dual extrusion structure with variable pitch blades and variable diameter snow outlet, combined with a double-layer hollow cylinder and hot air heating system, to achieve pre-compression and uniform heating of snow throughout the process, prevent freezing, and improve density and operation efficiency.
It significantly increases snow density, reduces transportation frequency, lowers energy consumption and maintenance costs, ensures continuous equipment operation, and meets the needs of large-area snow removal.
Smart Images
Figure CN121976489A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of snow compression equipment, and relates to a large spiral auger snow compression device. Background Technology
[0002] In winter snow removal operations, especially in areas with large snow accumulation such as municipal roads, large squares, ski resorts, and highways, the efficiency of snow removal and transportation directly impacts traffic safety, public environmental protection, and related operational costs. Currently, existing snow removal operations generally suffer from low snow density, loose texture, and high viscosity. Even after initial sweeping and collection, the snow remains loose, significantly reducing the actual loading capacity of transport vehicles and preventing full utilization of their rated volume. To complete snow removal tasks, transport vehicles must frequently travel between snow collection and dumping points, increasing fuel consumption, vehicle wear and tear, and extending the snow removal cycle, thus reducing overall operational efficiency. Furthermore, frequent travel increases carbon emissions, which is inconsistent with the industry's energy conservation and emission reduction requirements. In existing technologies, some snow compaction devices employ simple spiral conveyor structures, which can only convey snow and cannot effectively compact loose snow, or the compaction effect is poor, making it difficult to significantly increase snow density. Furthermore, some snow compaction devices do not consider the challenges of operating in low-temperature environments. Snow is prone to freezing during conveyance, adhering to the inner wall of the device cylinder, leading to poor snow conveyance, device jamming, and frequent shutdowns for cleaning, further affecting operational continuity. In addition, some snow compaction devices have unreasonable structural designs, with improper layout of drive and support components, making them susceptible to corrosion from snow and moisture, resulting in frequent equipment failures, high maintenance costs, and an inability to meet the heavy-duty, continuous operation requirements of large-scale snow removal operations. Summary of the Invention
[0003] This invention provides a large-scale spiral auger snow compactor, which solves the problems mentioned in the background art.
[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: It includes a cylindrical auger body, a rotating shaft, a hydraulic drive motor, and a variable-diameter snow outlet; the rotating shaft is axially arranged along the cylindrical auger body and extends from its head end to its tail end, and variable-pitch blades are axially fixedly arranged on the rotating shaft; the hydraulic drive motor is fixedly installed at the head end of the cylindrical auger body, and the power output end of the hydraulic drive motor is connected to the head end of the rotating shaft for transmission; the hydraulic drive motor is used to drive the rotating shaft and the... The variable pitch blades rotate synchronously; the variable diameter snow outlet is sealed and connected to the tail end of the cylindrical auger body; a snow inlet for snow accumulation is provided on the upper side of the head end of the cylindrical auger body; the cylindrical auger body adopts a double-layer hollow structure, specifically including an inner cylinder wall and an outer cylinder wall, the inner cylinder wall and the outer cylinder wall are sealed and connected to form a sealed hot air circulation chamber between them, and the outer cylinder wall is respectively welded with a hot air inlet and a hot air outlet connected to the hot air circulation chamber.
[0005] A more specific technical solution to the above technical solution may be: the hydraulic drive motor is externally mounted on the outer side wall of the head end of the cylindrical auger body, and the power output shaft of the hydraulic drive motor extends axially into the interior of the cylindrical auger body, and is coaxially fixedly connected to the head end of the rotating shaft through a coupling or flange to realize power transmission.
[0006] Furthermore: a rotating shaft support is fixedly provided on the inner side of the tail end of the cylindrical auger body. The rotating shaft support is integrally embedded in the tail end of the cylindrical auger body and does not occupy its internal snow conveying channel. The tail end of the rotating shaft is coaxially mounted on the bearing part of the rotating shaft support. The rotating shaft support realizes the radial positioning and rotational support of the tail end of the rotating shaft, avoids the eccentricity of the rotating shaft, ensures the stable pushing and squeezing of snow by the variable pitch blades, and ensures the smooth operation of the rotating shaft.
[0007] Furthermore, the hot air inlet is located on the lower outer wall of the head end of the cylindrical auger, and the hot air outlet is located on the upper outer wall of the tail end of the cylindrical auger. This ensures uniform heating throughout the hot air circulation chamber, preventing localized snow freezing and sticking, thereby melting some of the snow and increasing its moisture content. The location of the hot air inlet at the lower head end and the outlet at the upper tail end of the cylindrical auger prolongs the hot air circulation time within the chamber, ensuring uniform heating throughout the cylinder and preventing localized freezing of snow due to uneven temperature distribution. This achieves efficient heating without a high-power heat source, reducing energy consumption. The variable-diameter snow outlet precisely matches the cylinder diameter, facilitating easy assembly and disassembly. It can flexibly adapt to different snow density requirements based on actual operational needs. The overall device has a simple structure, low installation and debugging difficulty, and combines practicality and versatility.
[0008] Furthermore, the variable-diameter snow outlet has a gradually narrowing diameter structure. The head port diameter of the variable-diameter snow outlet is adapted to the inner and outer diameters of the cylindrical auger body and is sealed and fixedly assembled at the tail end of the cylindrical auger body. The tail port diameter of the variable-diameter snow outlet is smaller than its head port diameter. The narrowing diameter structure further compresses the snow and increases the snow compaction density.
[0009] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: 1. Addressing the limitation of traditional snow conveying augers, which can only transport but not effectively compress loose snow, this invention employs a dual-extrusion structure: pre-compression with variable-pitch blades and secondary compaction with a variable-diameter snow outlet. During transport, the variable-pitch blades gradually narrow the snow space, achieving initial compaction. The gradually narrowing snow outlet further reduces the snow discharge space, achieving deep compaction and significantly increasing snow density while reducing snow volume. The compacted snow effectively reduces the number of vehicle trips, lowering fuel consumption, labor costs, and operating time, achieving energy conservation and emission reduction from the source. It is particularly suitable for large-scale snow removal and transportation operations such as municipal roads, large squares, and ski resorts.
[0010] 2. In low-temperature operating environments, snow easily freezes and clumps, becoming highly viscous and readily adhering to the cylinder wall, causing auger jamming and poor snow discharge. This invention employs a double-layered hollow cylinder structure, forming a sealed hot air circulation chamber between the inner and outer cylinder walls. The hot air inlet and outlet are diagonally staggered, ensuring uniform hot air circulation throughout the cylinder and achieving constant temperature heating of the entire inner cylinder wall. The heat gently melts the frozen snow on the surface of the inner cylinder wall, appropriately controlling the snow's moisture content and making the snow texture more suitable for compaction. Simultaneously, it completely prevents snow from adhering to the inner cylinder wall and clogging the snow inlet and outlet, ensuring continuous and uninterrupted operation of the device without frequent shutdowns for cylinder wall cleaning, significantly improving overall operating efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of the present invention.
[0012] In the diagram: 1. Cylindrical auger body; 1-1. Snow inlet; 1-2. Inner cylinder wall; 1-3. Outer cylinder wall; 1-4. Hot air inlet; 1-5. Hot air outlet; 2. Rotating shaft; 3. Variable pitch blades; 4. Shaft support; 5. Hydraulic drive motor; 6. Variable diameter snow outlet. Detailed Implementation
[0013] The invention will be further described in detail below with reference to the accompanying drawings and examples: like Figure 1The large spiral auger snow grooming device shown includes a cylindrical auger body 1, a rotating shaft 2, a hydraulic drive motor 5, and a variable-diameter snow outlet 6. The rotating shaft 2 is axially arranged along the cylindrical auger body 1 and extends from its head end to its tail end. Variable-pitch blades 3 are axially fixed on the rotating shaft 2. The hydraulic drive motor 5 is externally mounted on the outer wall of the head end of the cylindrical auger body 1. The power output shaft of the hydraulic drive motor 5 extends axially into the interior of the cylindrical auger body 1 and is coaxially fixedly connected to the head end of the rotating shaft 2 via a coupling to achieve power transmission. The hydraulic drive motor 5 uses... The rotating shaft 2 and the variable pitch blades 3 rotate synchronously. A shaft support 4 is fixedly installed on the inner side of the tail end of the cylindrical auger body 1. The shaft support 4 is integrally embedded in the tail end of the cylindrical auger body 1 and does not occupy its internal snow conveying channel. The tail end of the rotating shaft 2 is coaxially mounted on the bearing part of the shaft support 4. The shaft support 4 realizes the radial positioning and rotational support of the tail end of the rotating shaft 2, avoids the eccentric operation of the rotating shaft 2, ensures the stable pushing and squeezing of snow by the variable pitch blades 3, and ensures the smooth operation of the rotating shaft 2. The variable diameter snow outlet 6 is sealed and connected to the cylindrical auger body. At the tail end of the cylindrical auger body 1, the variable-diameter snow outlet 6 has a gradually narrowing structure. The head port diameter of the variable-diameter snow outlet 6 is adapted to the inner and outer diameters of the cylindrical auger body 1 and is sealed and fixedly assembled at the tail end of the cylindrical auger body 1. The tail port diameter of the variable-diameter snow outlet 6 is smaller than its head port diameter. The narrowing structure further compresses the snow and increases the snow compaction density. A snow inlet 1-1 is provided on the upper side of the head end of the cylindrical auger body 1 for snow to enter. The cylindrical auger body 1 adopts a double-layer hollow structure, specifically including an inner cylinder wall 1-2 and an outer cylinder wall 1-3. The inner cylinder wall 1-2... -2 is sealed to the outer cylinder wall 1-3 to form a closed hot air circulation chamber. The outer cylinder wall 1-3 is welded with a hot air inlet 1-4 and a hot air outlet 1-5 that are connected to the hot air circulation chamber. The hot air inlet 1-4 is located on the lower side of the outer cylinder wall 1-3 at the head end of the cylindrical auger body 1, and the hot air outlet 1-5 is located on the upper side of the outer cylinder wall 1-3 at the tail end of the cylindrical auger body 1. This achieves uniform heating of the entire section of the hot air circulation chamber, prevents local snow from freezing and sticking, and thus melts some of the snow and increases the humidity of the snow.
[0014] During use, snow falls into the inner cavity of the cylindrical auger body 1 from the snow inlet 1-1 on the upper side of the head end. After the hydraulic drive motor 5 is started, it drives the rotating shaft 2 and the variable pitch blades 3 to rotate axially at a uniform speed. The blades generate a continuous spiral pushing force, which directionally transports the loose snow from the head end to the tail end of the cylindrical auger body 1. The pitch of the variable pitch blades 3 gradually decreases along the conveying direction, and the snow-accommodating space narrows synchronously, realizing the snow pre-compression in stages and improving the initial density of the snow. After the snow is pushed to the tail end of the body, it directly enters the gradually narrowing variable diameter snow outlet 6. After being compacted by secondary extrusion, it is discharged from the tail end of the snow outlet, completing the snow compaction operation. At the same time, hot air enters the hot air circulation chamber between the double-layer cylinder walls through the hot air inlet 1-4, flows along the entire cylinder axis and is discharged through the hot air outlet 1-5, continuously heating the inner cylinder wall 1-2, gently melting the frozen snow on the surface of the inner cylinder wall 1-2, and moderately adjusting the humidity of the snow to make the snow easier to compact, while preventing the snow from sticking to the inner cylinder wall 1-2.
[0015] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes made to it without departing from the spirit and scope of the present invention are within the protection scope of the present invention.
Claims
1. A large spiral auger snow-pressing device, characterized in that: The device includes a cylindrical auger body, a rotating shaft, a hydraulic drive motor, and a variable-diameter snow outlet. The rotating shaft is axially arranged along the cylindrical auger body and extends from its head end to its tail end. Variable-pitch blades are axially arranged on the rotating shaft. The hydraulic drive motor is installed at the head end of the cylindrical auger body and is connected to the rotating shaft. The variable-diameter snow outlet is connected to the tail end of the cylindrical auger body. A snow inlet is provided at the head end of the cylindrical auger body for snow accumulation. The cylindrical auger body adopts a double-layer hollow structure, specifically including an inner cylinder wall and an outer cylinder wall. The inner cylinder wall and the outer cylinder wall are connected to form a sealed hot air circulation chamber. A hot air inlet and a hot air outlet connected to the hot air circulation chamber are welded to the outer cylinder wall.
2. The large spiral auger snow compactor according to claim 1, characterized in that: The hydraulic drive motor is externally mounted on the outer wall of the head end of the cylindrical auger body. The power output shaft of the hydraulic drive motor extends axially into the interior of the cylindrical auger body and is coaxially connected to the head end of the rotating shaft through a coupling or flange.
3. The large-scale spiral auger snow-pressing device according to claim 2, characterized in that: A rotating shaft support is fixedly provided on the inner side of the tail end of the cylindrical auger body. The rotating shaft support is integrally embedded in the tail end of the cylindrical auger body and does not occupy its internal snow conveying channel; the tail end of the rotating shaft is coaxially inserted into the bearing part of the rotating shaft support.
4. The large spiral auger snow compactor according to claim 3, characterized in that: The hot air inlet is located on the lower outer wall of the head end of the cylindrical auger body, and the hot air outlet is located on the upper outer wall of the tail end of the cylindrical auger body.
5. The large spiral auger snow compactor according to claim 4, characterized in that: The variable-diameter snow outlet has a gradually decreasing diameter structure. The head port diameter of the variable-diameter snow outlet is adapted to the inner and outer diameters of the cylindrical auger body and is sealed and fixedly assembled at the tail end of the cylindrical auger body. The tail port diameter of the variable-diameter snow outlet is smaller than its head port diameter.