Snow-melting agent spreading device for road maintenance

Abstract

The utility model discloses a highway maintenance snow-melting agent spreading device belongs to spreading device technical field. Including traction frame and elevating system, the top of traction frame is installed with elevating system, the outer wall of elevating system is slidably installed with moving frame, the top of moving frame is installed with storage tank, the outer wall of storage tank is installed with the discharge pipe, the bottom of discharge pipe is installed with the downcomer, the outer wall of traction frame below downcomer is installed with support frame, the top of support frame is installed with downcomer tank. The utility model not only has realized the spreading device to the snow-melting agent convenient spreading, has facilitated the elastic downward pressure to the highway surface and has spread, avoided the snow-melting agent spreading when arbitrary splashing, avoided the snow-melting agent spreading when the range of spreading is not controlled, improved the effect of the snow-melting agent spreading, and the spreading device to the snow-melting agent convenient height adjustment of feeding and discharging has been facilitated, increased the range of the snow-melting agent feeding and discharging, improved the convenience of highway maintenance.

Description

Technical Field

[0001] This utility model relates to the field of spreading device technology, specifically a de-icing agent spreading device for highway maintenance. Background Technology

[0002] A spreader is a specialized piece of equipment that uses mechanical devices to uniformly distribute granular or powdered materials. Based on the spreading medium, it can be categorized into types such as de-icing agent spreaders and liquid spreaders. Its core functions include material conveying, quantitative control, and spreading trajectory adjustment. The equipment uses an engine or hydraulic drive system and is equipped with a modular structure including a stainless steel hopper and a rotating spreading disc.

[0003] For example, the de-icing agent spreading device for highway maintenance disclosed in the authorization announcement number CN220538540U includes a storage bin, a discharge bin, a processing bin, a crushing mechanism, a motor chamber, and a motor. The storage bin has a door at the upper end, which is hinged to the storage bin. The discharge bin is fixed to the lower end of the storage bin. The processing bin is fixed to the lower end of the discharge bin. The crushing mechanism is located inside the processing bin. The motor chamber is fixed to one side of the processing bin, and the motor is fixed inside the motor chamber. The lower end of the processing bin is a discharge port.

[0004] Although it has a crushing mechanism, it can crush the de-icing agent before spreading it on the road, avoiding the spread of de-icing agent that has solidified into lumps, reducing the waste of de-icing agent, making the spread of de-icing agent more uniform, and increasing the snow melting effect of de-icing agent.

[0005] However, this does not solve the problem that existing spreading devices of this type are generally not conducive to the convenient spreading of de-icing agents, are not convenient for elastically pressing down on the road surface, are prone to splashing randomly during spreading, and are easy to lose control of the spreading range, thus affecting the spreading effect of the de-icing agent. It is also not convenient to easily adjust the height of the spreading device for loading and unloading de-icing agents, which affects the range of loading and unloading of de-icing agents and the convenience of road maintenance. Utility Model Content

[0006] The purpose of this utility model is to provide a de-icing agent spreading device for highway maintenance, in order to solve the problems mentioned in the background art, such as the inconvenience of spreading de-icing agents in a convenient manner, the inconvenience of elastically pressing the spreading device onto the highway surface, the easy splashing of de-icing agents during spreading, the uncontrollable spreading range of de-icing agents, which affects the spreading effect of de-icing agents, and the inconvenience of convenient height adjustment of the de-icing agent loading and unloading device, which affects the range of de-icing agent loading and unloading and affects the convenience of highway maintenance.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A de-icing agent spreading device for highway maintenance includes a towing frame and a lifting frame. The lifting frame is mounted on the top of the towing frame. A movable frame is slidably mounted on the outer wall of the lifting frame. A storage box is mounted on the top of the movable frame. A discharge pipe is mounted on the outer wall of the storage box. A discharge pipe is mounted at the bottom end of the discharge pipe. A support frame is mounted on the outer wall of the towing frame below the discharge pipe. The discharge box is mounted on the top of the support frame. A rotating shaft is movably mounted on the bottom end of the support frame. Support wheels are symmetrically fitted onto the surface of the rotating shaft. A power motor is installed on the outer wall of the storage box away from the discharge pipe. The output end of the power motor is equipped with a spiral blade, which extends into the interior of the discharge pipe and is movably connected to the storage box. A drive sprocket is installed inside the rotating shaft below the discharge box. A chain is installed on the surface of the drive sprocket. A support shaft is movably installed on the top of the support frame on one side of the chain. A driven sprocket is installed on the surface of the support shaft, and the chain extends to the surface of the driven sprocket. A drive gear is installed on the surface of the support shaft on one side of the driven sprocket.

[0009] Optionally, a feeding shaft is movably installed inside the feeding box on one side of the drive gear, and the feeding shaft extends to the outside of the feeding box. A driven gear is fitted on the surface of the feeding shaft near the drive gear, and the driven gear meshes with the drive gear. Multiple sets of discharge wheels with equal spacing are fitted on the surface of the feeding shaft on one side of the feeding box. A spreading pipe is installed inside the feeding box on one side of the discharge wheel, and the spreading pipe extends to the outside of the feeding box. A limit shaft is movably installed at the bottom end of the support frame below the rotating shaft.

[0010] Optionally, the surface of the limiting shaft is fitted with multiple sets of equally spaced limiting arms, and each limiting arm is equipped with a pressing frame on its outer wall. The dispensing pipe is connected to the pressing frame. Each limiting arm has a sliding rod slidably installed at the bottom of the support frame on one side, and the sliding rod is connected to the limiting arm.

[0011] Optionally, a spring is fitted onto the surface of the sliding rod, with one end of the spring connected to the sliding rod and the other end of the spring connected to the support frame.

[0012] Optionally, a servo motor is installed at the top of the lifting frame, and a worm gear is installed at the output end of the servo motor.

[0013] Optionally, a threaded rod is movably mounted inside the lifting frame, and the threaded rod extends to the outside of the lifting frame.

[0014] Optionally, a worm wheel is fitted onto the surface of the threaded rod near the worm, and the worm wheel meshes with the worm.

[0015] Optionally, a threaded sleeve is fitted on the surface of the threaded rod away from the worm gear, and a drive arm is installed on the outer wall of the threaded sleeve, with limit frames installed at both ends of the drive arm.

[0016] Optionally, each of the limiting frames has two sets of sliding wheels symmetrically and movably installed inside, and the sliding wheels are slidably connected to the lifting frame.

[0017] Optionally, transmission blocks are symmetrically installed on the outer wall of the drive arm on one side of the threaded sleeve, and the transmission blocks are connected to the moving frame.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This spreading device not only enables convenient spreading of de-icing agent, but also facilitates the spreading of the agent on the road surface by elastic downward pressure, avoiding arbitrary splashing of the de-icing agent during spreading and preventing the uncontrolled spreading range, thus improving the spreading effect of the de-icing agent. Furthermore, it facilitates convenient height adjustment of the de-icing agent loading and unloading device, increases the range of de-icing agent loading and unloading, and improves the convenience of road maintenance.

[0019] A motor drives a spiral blade to rotate, facilitating the delivery of de-icing agent from the storage bin to the discharge and feed pipes. When an external tractor moves two sets of support wheels, these wheels rotate a rotating shaft, which in turn rotates a drive sprocket. This drive shaft, in turn, rotates a drive gear, which in turn rotates a driven gear. The driven gear then rotates the feed shaft, which provides movable support. The feed shaft, in turn, rotates multiple discharge wheels, facilitating the delivery of de-icing agent from the feed bin to the spreading pipes. This allows the de-icing agent to be spread onto the road surface through multiple spreading pipes, facilitating road maintenance. With the support of the spring by the moving rod, the spring elastically drives the sliding rod to rotate around the limit shaft. The support frame provides sliding support for the sliding rod, which in turn drives the limit arm to rotate. The limit shaft supports the limit arm, which in turn drives the lower pressure frame to rotate. The lower pressure frame then drives the spreading pipe to rotate, facilitating the elastic pressing of the lower pressure frame onto the road surface for easy and flexible spreading of the de-icing agent. This enables convenient spreading of the de-icing agent, avoids arbitrary splashing during application, prevents uncontrolled application, improves the effectiveness of de-icing agent application, and enhances the convenience of road maintenance.

[0020] When the material feeding height needs to be adjusted, the servo motor drives the worm gear to rotate, the worm gear drives the worm wheel to rotate, the worm wheel drives the threaded rod to rotate, the threaded rod drives the threaded sleeve to move, and the threaded sleeve drives the drive arm to move. Multiple sets of sliding wheels slide on the surface of the lifting frame to provide sliding support for the drive arm. The drive arm drives two sets of transmission blocks to move, the transmission blocks drive the moving frame to move, and the moving frame drives the storage box, discharge pipe, and feeding pipe. This convenient height adjustment allows for easy adjustment of the feeding and unloading height of the de-icing agent, increasing the range of de-icing agent feeding and unloading and improving the convenience of feeding and unloading the de-icing agent. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0022] Figure 1 This is a front view structural diagram of the present utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the storage box of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the mobile frame of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the drive arm of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the discharge wheel of this utility model;

[0028] Figure 7 This is a three-dimensional structural diagram of the feeding box of this utility model;

[0029] Figure 8 This is a three-dimensional structural diagram of the driven gear of this utility model;

[0030] Figure 9 This is a three-dimensional structural diagram of the feeding shaft of this utility model;

[0031] Figure 10 This is a three-dimensional structural diagram of the spring of this utility model.

[0032] Figure label:

[0033] 1. Traction frame; 2. Lifting frame; 3. Moving frame; 4. Storage box; 5. Discharge pipe; 6. Feeding pipe; 7. Feeding box; 8. Support frame; 9. Rotating shaft; 10. Support wheel; 11. Drive sprocket; 12. Chain; 13. Support shaft; 14. Driven sprocket; 15. Drive gear; 16. Driven gear; 17. Feeding shaft; 18. Limiting shaft; 19. Limiting arm; 20. Lowering frame; 21. Spreading pipe; 22. Discharge wheel; 23. Limiting frame; 24. Sliding rod; 25. Spring; 26. Servo motor; 27. Worm gear; 28. Worm wheel; 29. ​​Threaded rod; 30. Threaded sleeve; 31. Drive arm; 32. Transmission block; 33. Sliding wheel; 34. Power motor; 35. Spiral blade.

[0034] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0035] The following is a detailed description of a de-icing agent spreading device for highway maintenance provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0036] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0037] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0038] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0039] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0040] like Figures 1 to 2 As shown, an embodiment of this utility model provides a de-icing agent spreading device for highway maintenance, including a traction frame 1 and a lifting frame 2. The lifting frame 2 is installed at the top of the traction frame 1, and a movable frame 3 is slidably installed on the outer wall of the lifting frame 2. A storage box 4 is installed at the top of the movable frame 3, and a discharge pipe 5 is installed on the outer wall of the storage box 4. A discharge pipe 6 is installed at the bottom end of the discharge pipe 5. A support frame 8 is installed on the outer wall of the traction frame 1 below the discharge pipe 6. A discharge box 7 is installed at the top of the support frame 8, and a rotating shaft 9 is movably installed at the bottom end of the support frame 8. The surfaces of the rotating shaft 9 are symmetrically fitted. A support wheel 10 is provided. A power motor 34 is installed on the outer wall of the storage box 4 on the side away from the discharge pipe 5. A spiral blade 35 is installed at the output end of the power motor 34 and extends into the interior of the discharge pipe 5. The spiral blade 35 is movably connected to the storage box 4. A drive sprocket 11 is installed inside the rotating shaft 9 below the discharge box 7. A chain 12 is installed on the surface of the drive sprocket 11. A support shaft 13 is movably installed at the top of the support frame 8 on one side of the chain 12. A driven sprocket 14 is installed on the surface of the support shaft 13 and the chain 12 extends to the surface of the driven sprocket 14. A drive gear 15 is fitted onto the surface of the support shaft 13 on one side of the driven sprocket 14. A feed shaft 17 is movably installed inside the feed box 7 on one side of the drive gear 15, and the feed shaft 17 extends to the outside of the feed box 7. A driven gear 16 is fitted onto the surface of the feed shaft 17 near the drive gear 15, and the driven gear 16 meshes with the drive gear 15. Multiple sets of discharge wheels 22 with equal spacing are fitted onto the surface of the feed shaft 17 on one side of the feed box 7. A spreading pipe 21 is installed inside the feed box 7 on one side of the discharge wheel 22, and the spreading pipe 21 extends into the feed box. Outside of 7, a limiting shaft 18 is movably installed at the bottom of the support frame 8 below the rotating shaft 9. Multiple sets of limiting arms 19 with equal spacing are fitted on the surface of the limiting shaft 18. A pressing frame 20 is installed on the outer wall of each limiting arm 19, and the spreading pipe 21 is connected to the pressing frame 20. A sliding rod 24 is slidably installed at the bottom of the support frame 8 on one side of the limiting arm 19. The sliding rod 24 is connected to the limiting arm 19. A spring 25 is fitted on the surface of the sliding rod 24, and one end of the spring 25 is connected to the sliding rod 24, and the other end of the spring 25 is connected to the support frame 8.

[0041] Connect the towing frame 1 to the external towing vehicle, pour the de-icing agent into the storage tank 4, and move the towing frame 1 to the side of the road requiring maintenance using the external towing vehicle. When it is necessary to spread the de-icing agent, turn on the power motor 34. With the support of the storage tank 4, the power motor 34 drives the spiral blade 35 to rotate, so that the spiral blade 35 can transport the de-icing agent inside the storage tank 4 through the discharge pipe 5 and the discharge pipe 6 to the inside of the discharge tank 7. When the external towing vehicle moves the two sets of support wheels 10, the support wheels 10 drive... Rotating shaft 9 rotates, driving drive sprocket 11 to rotate. Drive sprocket 11 drives chain 12 to move, chain 12 drives driven sprocket 14 to rotate, driven sprocket 14 drives support shaft 13 to rotate, support frame 8 provides movable support for support shaft 13, support shaft 13 drives drive gear 15 to rotate, and under the meshing of drive gear 15 and driven gear 16, drive gear 15 drives driven gear 16 to rotate, driven gear 16 drives unloading shaft 17 to rotate, unloading box 7 provides movable support for unloading shaft 17. The support frame 8 supports the sliding rod 24, which drives multiple sets of discharge wheels 22 to rotate, facilitating the delivery of de-icing agent from the discharge box 7 to the spreading pipe 21. This allows the de-icing agent to be spread onto the road surface through the spreading pipe 21 for road maintenance. Supported by the sliding rod 24 and spring 25, the spring 25 elastically drives the sliding rod 24 to rotate around the limiting shaft 18. The support frame 8 provides sliding support for the sliding rod 24, which in turn drives the limiting arm 19 to rotate. The limiting shaft 18 provides sliding support for the limiting arm 19. The limiting arm 19 provides support, and the limiting arm 19 drives the lower pressure frame 20 to rotate. The lower pressure frame 20 drives the spreading pipe 21 to rotate, so that the lower pressure frame 20 can be elastically pressed down onto the road surface, so that the snow melting agent can be elastically spread on the road surface. This realizes the convenient spreading of snow melting agent by the spreading device, facilitates the elastic pressing and spreading of snow melting agent on the road surface, avoids arbitrary splashing of snow melting agent during spreading, avoids uncontrolled spreading range of snow melting agent, improves the spreading effect of snow melting agent, and improves the convenience of road maintenance.

[0042] A servo motor 26 is installed at the top of the lifting frame 2. A worm gear 27 is installed at the output end of the servo motor 26. A threaded rod 29 is movably installed inside the lifting frame 2 and extends to the outside of the lifting frame 2. A worm wheel 28 is fitted on the surface of the threaded rod 29 near the worm gear 27 and meshes with the worm gear 27. A threaded sleeve 30 is fitted on the surface of the threaded rod 29 away from the worm wheel 28. A drive arm 31 is installed on the outer wall of the threaded sleeve 30. Limit frames 23 are installed at both ends of the drive arm 31. Two sets of sliding wheels 33 are symmetrically and movably installed inside the limit frames 23 and are slidably connected to the lifting frame 2. Transmission blocks 32 are symmetrically installed on the outer wall of the drive arm 31 on one side of the threaded sleeve 30 and are connected to the moving frame 3.

[0043] When the height of the material discharge needs to be adjusted, the servo motor 26 is turned on. Supported by the lifting frame 2, the servo motor 26 drives the worm gear 27 to rotate. Under the meshing of the worm gear 27 and the worm wheel 28, the worm gear 27 drives the worm wheel 28 to rotate. The worm wheel 28 drives the threaded rod 29 to rotate. Under the threaded connection between the threaded rod 29 and the threaded sleeve 30, the threaded rod 29 drives the threaded sleeve 30 to move. The threaded sleeve 30 drives the drive arm 31 to move. Under the movable support of the sliding wheel 33 by the limit frame 23, multiple sets of sliding wheels 33 slide on the surface of the lifting frame 2 to provide sliding support for the drive arm 31. The drive arm 31 moves with two sets of transmission blocks 32. The transmission blocks 32 drive the moving frame 3 to move. The moving frame 3 drives the storage box 4, the discharge pipe 5, the discharge pipe 6, and the convenient height adjustment, so as to conveniently adjust the height of the material discharge. This realizes the convenient height adjustment of the snow melting agent discharge by the spreading device, increases the range of snow melting agent discharge, and improves the convenience of snow melting agent discharge.

[0044] The working principle of the technical solution provided by this utility model is as follows: The power motor 34 drives the spiral blade 35 to rotate, so that the spiral blade 35 can transport the de-icing agent inside the storage box 4 through the discharge pipe 5 and the discharge pipe 6 to the inside of the discharge box 7. When the external tractor drives the two sets of support wheels 10 to move, the support wheels 10 drive the rotating shaft 9 to rotate, the rotating shaft 9 drives the drive sprocket 11 to rotate, the support shaft 13 drives the drive gear 15 to rotate, the drive gear 15 drives the driven gear 16 to rotate, the driven gear 16 drives the discharge shaft 17 to rotate, the discharge box 7 provides movable support for the discharge shaft 17, and the discharge shaft 17 drives the multiple sets of discharge wheels 22 to rotate, so that the multiple sets of discharge wheels 22 can transport the de-icing agent inside the discharge box 7 to the inside of the spreading pipe 21, so that the de-icing agent can be spread to the surface of the road through the multiple sets of spreading pipes 21, so as to facilitate the maintenance of the road. Under the support of the sliding rod 24 and the spring 25, the spring 25 elastically drives the sliding rod 24 to rotate around the limit shaft 18. The support frame 8 provides sliding support for the sliding rod 24, which in turn drives the limiting arm 19 to rotate. The limiting shaft 18 supports the limiting arm 19, which in turn drives the lower pressure frame 20 to rotate. The lower pressure frame 20 then drives the spreading pipe 21 to rotate, allowing the lower pressure frame 20 to be pressed down onto the road surface for easy spreading. When the material feeding height needs to be adjusted, the servo motor 26 drives the worm gear 27 to rotate, which in turn drives the worm wheel 28 to rotate. The worm wheel 28 then drives the threaded rod 29 to rotate, which in turn drives the threaded sleeve 30 to move. The threaded sleeve 30 then drives the drive arm 31 to move. Multiple sets of sliding wheels 33 slide on the surface of the lifting frame 2 to provide sliding support for the drive arm 31. The drive arm 31 moves two sets of transmission blocks 32, which in turn drive the moving frame 3 to move. The moving frame 3 then drives the storage box 4, the discharge pipe 5, and the feeding pipe 6 for convenient height adjustment, thus facilitating the adjustment of the feeding height and completing the operation of the spreading device.

[0045] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A de-icing agent spreading device for highway maintenance, characterized in that: The device includes a traction frame and a lifting frame. A lifting frame is mounted on the top of the traction frame. A movable frame is slidably mounted on the outer wall of the lifting frame. A storage box is mounted on the top of the movable frame. A discharge pipe is mounted on the outer wall of the storage box. A feed pipe is mounted at the bottom end of the discharge pipe. A support frame is mounted on the outer wall of the traction frame below the feed pipe. A feed box is mounted on the top of the support frame. A rotating shaft is movably mounted at the bottom end of the support frame. Support wheels are symmetrically fitted on the surface of the rotating shaft. A power motor is mounted on the outer wall of the storage box on the side away from the discharge pipe. A spiral blade is mounted on the output end of the power motor, extending into the interior of the discharge pipe and movably connected to the storage box. A drive sprocket is fitted inside the rotating shaft below the feed box. A chain is fitted on the surface of the drive sprocket. A support shaft is movably mounted on the top of the support frame on one side of the chain. A driven sprocket is fitted on the surface of the support shaft, with the chain extending to the surface of the driven sprocket. A drive gear is fitted on the surface of the support shaft on one side of the driven sprocket.

2. The de-icing agent spreading device for highway maintenance according to claim 1, characterized in that: A feeding shaft is movably installed inside the feeding box on one side of the drive gear, and the feeding shaft extends to the outside of the feeding box. A driven gear is fitted on the surface of the feeding shaft near the drive gear, and the driven gear meshes with the drive gear. Multiple sets of discharge wheels with equal spacing are fitted on the surface of the feeding shaft on one side of the feeding box. A spreading pipe is installed inside the feeding box on one side of the discharge wheel, and the spreading pipe extends to the outside of the feeding box. A limit shaft is movably installed at the bottom end of the support frame below the rotating shaft.

3. The de-icing agent spreading device for highway maintenance according to claim 2, characterized in that: The surface of the limiting shaft is fitted with multiple sets of limiting arms at equal intervals. Each limiting arm has a pressing frame installed on its outer wall, and the spreading pipe is connected to the pressing frame. Each limiting arm has a sliding rod slidably installed at the bottom of the support frame on one side, and the sliding rod is connected to the limiting arm.

4. The de-icing agent spreading device for highway maintenance according to claim 3, characterized in that: A spring is fitted onto the surface of the sliding rod, with one end of the spring connected to the sliding rod and the other end connected to the support frame.

5. The de-icing agent spreading device for highway maintenance according to claim 4, characterized in that: A servo motor is installed at the top of the lifting frame, and a worm gear is installed at the output end of the servo motor.

6. The de-icing agent spreading device for highway maintenance according to claim 5, characterized in that: The lifting frame is internally fitted with a threaded rod that extends to the outside of the lifting frame.

7. The de-icing agent spreading device for highway maintenance according to claim 6, characterized in that: The threaded rod has a worm wheel fitted on the surface near the worm, and the worm wheel meshes with the worm.

8. The de-icing agent spreading device for highway maintenance according to claim 7, characterized in that: The threaded rod is fitted with a threaded sleeve on the side away from the worm gear. A drive arm is installed on the outer wall of the threaded sleeve, and limit frames are installed at both ends of the drive arm.

9. The de-icing agent spreading device for highway maintenance according to claim 8, characterized in that: The limiting frame has two sets of sliding wheels symmetrically and movably installed inside, and the sliding wheels are slidably connected to the lifting frame.

10. The de-icing agent spreading device for highway maintenance according to claim 9, characterized in that: Transmission blocks are symmetrically installed on the outer wall of the drive arm on one side of the threaded sleeve, and the transmission blocks are connected to the moving frame.

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