A snow-melting agent spraying device for road maintenance

Abstract

This invention discloses a de-icing agent spraying device for highway maintenance, comprising: a mounting frame for fixed connection with a vehicle; a hopper mounted on the mounting frame; a distributing chamber connected to the lower end of the hopper, with a distributing opening at its front end; a distributing component disposed at the connection between the hopper and the distributing chamber; a drive box mounted on the mounting frame and located below the distributing chamber; an output shaft connected to a transmission mechanism within the drive box, with its upper end extending upward through the distributing chamber and the distributing component before reaching the lower side of the hopper; and a distributing disc fixedly connected to the output shaft, with a stirring rod connected to the upper end of the output shaft. Thus, the amount of material dispensed can be flexibly adjusted by the overlap and staggering of the material discharge holes on the baffle plate and the rotatable valve plate, avoiding waste or insufficient distributing of the de-icing agent. Simultaneously, the single output shaft drives both the distributing disc and the stirring rod to rotate, simplifying the transmission structure, reducing manufacturing costs, and improving the reliability of the linkage between moving parts and the overall operating efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of highway maintenance equipment, and in particular to a de-icing agent spraying device for highway maintenance. Background Technology

[0002] De-icing agents are chemical agents used for de-icing and snow removal on roads in winter. They lower the melting point of snow and ice, allowing them to melt at lower temperatures and restoring road passability. During highway maintenance, de-icing agents must be evenly spread on the road surface to ensure driving safety. De-icing agent application devices are mechanical equipment used to carry and spread the de-icing agent onto the road surface; they are usually mounted on maintenance vehicles and continuously spread along the work route.

[0003] In related technologies, de-icing agent application devices generally consist of a hopper, a feeding mechanism, a spreading mechanism, and a drive mechanism. The hopper stores the de-icing agent, the feeding mechanism controls the flow rate of the agent from the hopper into the spreading mechanism, the spreading mechanism spreads the agent onto the road surface through rotational motion, and the drive mechanism provides power to all moving parts. During operation, as the maintenance vehicle moves, the drive mechanism drives the spreading mechanism to rotate, and the feeding mechanism continuously supplies the spreading mechanism, completing the de-icing agent application.

[0004] However, existing de-icing agent spraying devices have the following shortcomings in use: Firstly, the adjustment precision of the discharge flow rate is limited, making it difficult to flexibly adjust the spreading amount according to vehicle speed and road conditions, which easily leads to waste or insufficient spreading of de-icing agent; secondly, the drive mechanism usually needs to drive the spreading mechanism and the stirring component in the hopper separately, resulting in a complex transmission structure, high manufacturing cost, and a lack of linkage between the moving parts, which affects the overall operating efficiency and reliability of the device. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, the purpose of this invention is to provide a de-icing agent spraying device for highway maintenance. By aligning and interleaving the discharge holes on the baffle plate and the rotatable valve plate, the amount of de-icing agent can be flexibly adjusted, avoiding waste or insufficient spreading of de-icing agent. At the same time, a single output shaft drives the spreading disc and the stirring rod to rotate simultaneously, simplifying the transmission structure, reducing manufacturing costs, and improving the linkage reliability and overall operating efficiency between various moving parts.

[0007] To achieve the above objectives, the present invention provides a de-icing agent application device for highway maintenance, comprising: Mounting bracket for secure connection to the vehicle; The hopper is installed on the mounting frame; A dispersing chamber is connected to the lower end of the hopper. It has a dispersing opening at its front end and a rotatable dispersing disc inside. The dispersing disc is equipped with multiple levers. A material dispensing component is located at the connection between the hopper and the distributing chamber, and is used to adjust the amount of snow melting material falling from the hopper into the distributing chamber. The drive box is mounted on the mounting frame and located below the distribution chamber. It has a transmission mechanism inside and a power input component for connecting to external power at its rear end. The output shaft is connected to the transmission mechanism in the drive box, and its upper end extends upward through the distribution chamber and the material distribution component before extending into the lower side of the hopper. The spreading disc is fixedly connected to the output shaft, and a stirring rod is connected to the upper end of the output shaft. The output shaft drives both the spreading disc and the stirring rod to rotate.

[0008] In addition, the de-icing agent spraying device for highway maintenance proposed above according to the present invention may also have the following additional technical features: Specifically, the material dispensing component includes: A baffle plate is fixedly installed at the lower end of the hopper, and at least one first discharge hole is provided on it; A valve plate is rotatably stacked above or below the baffle plate, and a second discharge hole corresponding to the first discharge hole is provided on it; When the valve plate rotates relative to the baffle plate, the second discharge hole and the first discharge hole switch between completely overlapping and completely intersecting to adjust the actual opening of the discharge port.

[0009] Specifically, the valve plate is provided with a connecting rod on its outer periphery. The connecting rod is connected to one end of a driving member, and the other end of the driving member is hinged to the mounting bracket. The driving member drives the valve plate to rotate relative to the baffle plate.

[0010] Specifically, the edge of the deflector is provided with an installation groove, and a scraper is installed in the installation groove. The outer edge of the scraper scrapes off the de-icing agent adhering to the inner wall of the distributing chamber when the distributing disc rotates.

[0011] Specifically, the scraper is made of an elastic material, and its outer edge is in interference contact with the inner wall of the distribution chamber.

[0012] Specifically, the hopper is equipped with a crossbar inside, and the two ends of the crossbar are fixed to the opposite inner walls of the hopper to improve the structural strength of the hopper and to break the arch of the de-icing agent inside.

[0013] Specifically, the power input component is a connecting rod, and the outer surface of the connecting rod has a groove along the axial direction for cooperating with the protruding key at the power output end of the vehicle to transmit torque.

[0014] Specifically, the output shaft passes through the valve plate and the baffle plate, and the valve plate and the baffle plate are respectively provided with a central hole for the output shaft to pass through.

[0015] Specifically, the stirring rod is a rod structure, with its lower end fixedly connected to the upper end of the output shaft, and rotates synchronously with the output shaft.

[0016] Specifically, the driving component is any one of an electric push rod, a hydraulic cylinder, or a manually adjusting screw.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The present invention provides a de-icing agent spraying device for highway maintenance, which realizes stepless adjustment of the amount of material discharged by overlapping and interlacing the discharge holes on the baffle plate and the rotatable valve plate. It is easy to operate and can adjust the amount of spreading in real time according to road conditions and operation requirements, so as to avoid waste or insufficient spreading of de-icing agent.

[0018] 2. The present invention provides a de-icing agent spraying device for highway maintenance, which simultaneously drives the spreading disc and the mixing rod to rotate through a single output shaft, so that the spreading and mixing functions share the same power source and transmission path, simplifying the transmission structure, reducing manufacturing costs, and improving the linkage reliability and overall operating efficiency between various moving parts.

[0019] 3. A de-icing agent spraying device for highway maintenance according to the present invention, wherein a scraper set on the edge of the spreading plate scrapes off the de-icing agent adhering to the inner wall of the spreading chamber when the spreading disc rotates, thereby reducing the residue and agglomeration on the inner wall and maintaining smooth rotation of the spreading disc and stable spreading amount. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a de-icing agent spraying device for highway maintenance according to the present invention; Figure 2 This is a top view of a de-icing agent spraying device for highway maintenance according to the present invention; Figure 3 The present invention relates to a de-icing agent spraying device for highway maintenance. Figure 2 Sectional view along line AA; Figure 4 This is a three-dimensional structural cross-sectional view of a de-icing agent spraying device for highway maintenance according to the present invention; Figure 5 This is a schematic diagram of the material distribution component of a de-icing agent spraying device for highway maintenance according to the present invention; Figure 6This is a schematic diagram of the drive box structure of a de-icing agent spraying device for highway maintenance according to the present invention; Figure 7 This is a schematic diagram of the spreading disc structure of a de-icing agent spraying device for highway maintenance according to the present invention; Figure 8 This invention relates to a de-icing agent application device for highway maintenance. Figure 7 Enlarged schematic diagram of the structure of section A in the middle.

[0021] As shown in the figure: 1. Mounting frame; 2. Hopper; 21. Crossbar; 3. Distribution chamber; 31. Spreading opening; 4. Spreading disc; 41. Paddle plate; 411. Mounting groove; 42. Scraper; 5. Material distribution assembly; 51. Baffle plate; 511. First discharge hole; 52. Valve plate; 521. Second discharge hole; 53. Connecting rod; 54. Driving component; 6. Drive box; 7. Power input component; 71. Groove; 8. Output shaft; 9. Stirring rod. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated 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 the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0023] The following description, in conjunction with the accompanying drawings, describes an embodiment of the present invention for applying a de-icing agent for highway maintenance.

[0024] like Figure 1 - Figure 8 As shown, an embodiment of the present invention provides a de-icing agent application device for highway maintenance, comprising: Mounting bracket 1 is used for fixed connection with the vehicle; Hopper 2 is installed on mounting frame 1; The dispersing chamber 3 is connected to the lower end of the hopper 2. Its front end is provided with a spreading opening 31, and its interior is provided with a rotatable spreading disc 4. The spreading disc 4 is provided with multiple levers 41. The material distribution component 5 is located at the connection between the hopper 2 and the distribution chamber 3, and is used to adjust the amount of snow melting that falls from the hopper 2 into the distribution chamber 3. The drive box 6 is mounted on the mounting bracket 1 and located below the distribution chamber 3. It has a transmission mechanism inside and a power input component 7 for connecting to external power at its rear end. The output shaft 8 is connected to the transmission mechanism in the drive box 6. Its upper end extends upward through the distribution chamber 3 and the material distribution component 5 and then into the lower side of the hopper 2. The spreading disc 4 is fixedly connected to the output shaft 8, and the upper end of the output shaft 8 is connected to the stirring rod 9. The output shaft 8 drives the spreading disc 4 and the stirring rod 9 to rotate simultaneously.

[0025] It should be noted that the mounting bracket 1 is the base component for connecting this device to the vehicle, used to fix the entire spraying device to the frame or rear mounting position of the maintenance vehicle. The mounting bracket 1 is constructed of welded metal profiles or spliced ​​with high-strength bolts, possessing sufficient load-bearing capacity to withstand the weight of the hopper 2 when fully loaded with de-icing agent, as well as vibrations and impacts during vehicle movement. The mounting bracket 1 is equipped with multiple mounting interfaces for connecting the hopper 2, the drive box 6, and the drive components; the positions of each mounting interface are set according to the layout requirements of the components.

[0026] Hopper 2 is mounted on mounting frame 1 and is used to store de-icing agent. Hopper 2 has a conical or trapezoidal structure that is wider at the top and narrower at the bottom, so that the de-icing agent can collect at the lower outlet under the action of gravity. The lower opening of hopper 2 is connected to the distribution chamber 3, and the de-icing agent enters the distribution chamber 3 through the distributing component 5. Preferably, hopper 2 is made of stainless steel or corrosion-resistant steel plate to resist the corrosiveness of the de-icing agent.

[0027] The distributing chamber 3 is connected to the lower end of the hopper 2, serving to accommodate the spreading disc 4 and provide space for the centrifugal dispersion of the de-icing agent. The front end of the distributing chamber 3 has a spreading opening 31, which faces forward or to the side-front of the device. Under the centrifugal force of the spreading disc 4, the de-icing agent is dispersed onto the road surface through the spreading opening 31. An appropriate gap is maintained between the inner wall of the distributing chamber 3 and the spreading disc 4 to ensure free rotation of the spreading disc 4. The bottom of the distributing chamber 3 is connected to the drive housing 6, and the output shaft 8 extends upward from the drive housing 6 through the bottom wall of the distributing chamber 3 into its interior.

[0028] The spreading disc 4 is rotatably disposed inside the spreading chamber 3 and fixedly connected to the output shaft 8, rotating synchronously with the output shaft 8. The spreading disc 4 has a disc-shaped structure, and its upper surface is provided with multiple deflectors 41, which are spaced apart along the circumference of the spreading disc 4. When the de-icing agent falls from the dispensing component 5 into the central area of ​​the spreading disc 4, the spreading disc 4 rotates at high speed, and the deflectors 41 push the de-icing agent to move radially outward along the spreading disc 4, and under the action of centrifugal force, the de-icing agent is thrown out from the spreading opening 31. The deflectors 41 extend in an arc or straight line in the radial direction of the spreading disc 4. Preferably, the deflectors 41 and the spreading disc 4 are integrally formed, or fixed to the spreading disc 4 by welding, bolting, or other means.

[0029] The distributing component 5 is located at the connection between the hopper 2 and the spreading chamber 3, and is used to regulate the amount of snow-melting agent falling from the hopper 2 into the spreading chamber 3. The distributing component 5 is located between the lower outlet of the hopper 2 and the spreading disc 4, and controls the volume of snow-melting agent passing through per unit time by changing the opening of the discharge channel. The specific structure of the distributing component 5 will be further explained later.

[0030] The drive housing 6 is mounted on the mounting bracket 1 and located below the distribution chamber 3. It houses the transmission mechanism and transmits external power to the output shaft 8. The housing of the drive housing 6 is fixedly connected to the bottom of the distribution chamber 3, and its rear end is provided with a power input component 7. The power input component 7 is connected to the vehicle's power output end, converting the power from the vehicle's engine or hydraulic motor through the transmission mechanism within the drive housing 6 to drive the output shaft 8 to rotate. Preferably, the transmission mechanism within the drive housing 6 is a bevel gear reversing transmission mechanism, which converts the horizontal rotational motion of the power input component 7 into the vertical rotational motion of the output shaft 8.

[0031] The power input component 7 is located at the rear end of the drive housing 6 and is used to connect to an external power source. The external power source is typically the power output shaft of the maintenance vehicle. The power input component 7 transmits the vehicle's power to the output shaft 8 via the drive housing 6. Preferably, the power input component 7 is a connecting rod with an axially grooved outer surface for engaging with a protruding key at the vehicle's power output end to transmit torque, forming a keyed connection structure.

[0032] The output shaft 8 is connected to the transmission mechanism inside the drive box 6. Its upper end extends upwards, passing through the bottom wall of the distributing chamber 3 and the material distribution assembly 5 before entering the lower side of the hopper 2. Driven by the drive box 6, the output shaft 8 rotates around its own axis, simultaneously driving the spreading disc 4 and the stirring rod 9 fixed on it to rotate together. One output shaft 8 drives both the spreading disc 4 and the stirring rod 9, allowing the spreading and stirring functions to share the same power source and transmission path, simplifying the transmission structure of the device. A rotational clearance is left between the output shaft 8 and the material distribution assembly 5 at the point where it passes through, ensuring that the output shaft 8 can rotate freely without affecting the adjustment function of the material distribution assembly 5.

[0033] The stirring rod 9 is connected to the upper end of the output shaft 8 and rotates synchronously with the output shaft 8. Located in the lower region inside the hopper 2, the stirring rod 9 agitates the de-icing agent at the bottom of the hopper 2 during rotation, breaking up any clumps and bridging formed by moisture or stagnation, keeping the de-icing agent loose and allowing it to flow smoothly through the distribution assembly 5 into the distribution chamber 3. The stirring range of the stirring rod 9 covers the lower outlet area of ​​the hopper 2, corresponding to the discharge channel position of the distribution assembly 5.

[0034] Specifically, vehicle power is transmitted to drive housing 6 via power input component 7, and the transmission mechanism within drive housing 6 drives output shaft 8 to rotate. Output shaft 8 simultaneously drives spreader disc 4 and stirring rod 9 to rotate. Stirring rod 9 agitates the de-icing agent at the bottom of hopper 2, keeping it loose and allowing it to fall through the discharge channel of distribution component 5 to the central area of ​​spreader disc 4. Spreader disc 4 rotates at high speed, and deflector 41 pushes the de-icing agent radially. Under centrifugal force, the de-icing agent is thrown onto the road surface from the spreader opening 31 at the front of distribution chamber 3, completing the de-icing agent application operation. By adjusting the opening of the discharge channel of distribution component 5, the amount of de-icing agent spread per unit time can be controlled.

[0035] In one embodiment of the present invention, the material dispensing component 5 includes: A baffle plate 51 is fixedly installed at the lower end of the hopper 2, and at least one first discharge hole 511 is provided on it; The valve plate 52 is rotatably stacked above or below the baffle plate 51, and a second discharge hole 521 corresponding to the first discharge hole 511 is provided on it. When the valve plate 52 rotates relative to the baffle plate 51, the second discharge hole 521 and the first discharge hole 511 switch between completely overlapping and completely intersecting to adjust the actual opening of the discharge port.

[0036] In this embodiment, a connecting rod 53 is provided on the outer periphery of the valve plate 52. The connecting rod 53 is connected to one end of a driving member 54, and the other end of the driving member 54 is hinged to the mounting bracket 1. The driving member 54 drives the valve plate 52 to rotate relative to the baffle plate 51.

[0037] It should be noted that the baffle plate 51 is fixedly installed at the lower end of the hopper 2, serving as the fixed base plate for the material distribution assembly 5. The baffle plate 51 is arranged horizontally or nearly horizontally, covering the lower outlet area of ​​the hopper 2. The baffle plate 51 has at least one first discharge hole 511, which is a through hole penetrating the upper and lower surfaces of the baffle plate 51. Under the action of gravity, the de-icing agent falls from the hopper 2 into the distribution chamber 3 through the first discharge hole 511. Preferably, the baffle plate 51 is fixed to the lower edge of the hopper 2 by bolts or welding.

[0038] The valve plate 52 is rotatably stacked above or below the baffle plate 51, forming a layered structure with the baffle plate 51. The valve plate 52 has second discharge holes 521 corresponding to the first discharge hole 511, and the number and position of the second discharge holes 521 match those of the first discharge holes 511. The valve plate 52 can rotate relative to the baffle plate 51 around its central axis, and the relative positions of the second discharge holes 521 and the first discharge holes 511 change during rotation. When the second discharge holes 521 and the first discharge holes 511 are completely aligned, the actual opening of the discharge port is at its maximum, and the amount of snow-melting agent passing through per unit time is at its maximum. When the second discharge holes 521 and the first discharge holes 511 are completely staggered, the discharge port is closed, and the snow-melting agent cannot pass through. In the intermediate position between complete alignment and complete staggering, the actual opening of the discharge port changes continuously with the rotation angle of the valve plate 52, achieving stepless adjustment of the discharge amount. Preferably, both the first discharge hole 511 and the second discharge hole 521 are multiple fan-shaped holes or circular holes evenly distributed along the circumference. Wear-resistant washers or lubricating coatings can be provided between the contact surfaces of the valve plate 52 and the baffle plate 51 to reduce rotational friction resistance.

[0039] A connecting rod 53 is disposed on the outer periphery of the valve plate 52, with one end fixedly connected to the side edge of the valve plate 52 and the other end connected to one end of the driving member 54. The connecting rod 53 converts the linear or telescopic motion of the driving member 54 into the rotational motion of the valve plate 52. When the driving member 54 extends or retracts, the connecting rod 53 drives the valve plate 52 to rotate around its central axis by a certain angle.

[0040] One end of the drive component 54 is connected to the connecting rod 53, and the other end is hinged to the mounting bracket 1. The drive component 54 is the power source for adjusting the material distribution assembly 5. The operator controls the actual opening of the material discharge port by controlling the extension and retraction of the drive component 54 to adjust the rotation angle of the valve plate 52. The hinge point between the drive component 54 and the mounting bracket 1 allows the drive component 54 to swing at an angle during extension and retraction, adapting to the movement trajectory of the connecting rod 53. Preferably, the drive component 54 is any one of an electric push rod, a hydraulic cylinder, or a manually adjusting screw.

[0041] When adjusting the material discharge rate, the drive component 54 extends and retracts, driving the valve plate 52 to rotate relative to the baffle plate 51 via the connecting rod 53. As the valve plate 52 rotates, the overlapping area between the second discharge hole 521 and the first discharge hole 511 changes, thus altering the actual opening of the discharge port. When an increase in the discharge rate is required, the drive component 54 drives the valve plate 52 to rotate in a direction that increases the overlapping area between the second and first discharge holes 521; when a decrease in the discharge rate or to stop the discharge is required, the drive component 54 drives the valve plate 52 to rotate in a direction that causes the two holes to intersect. Operators can adjust the material discharge rate in real time according to road conditions and operational needs while the vehicle is in motion, without stopping the vehicle or disassembling components.

[0042] In one embodiment of the present invention, the edge of the squeegee 41 is provided with an installation groove 411, and a scraper 42 is installed in the installation groove 411. The outer edge of the scraper 42 scrapes off the de-icing agent adhering to the inner wall of the distributing chamber 3 when it rotates with the spreading disc 4.

[0043] The mounting groove 411 is formed at the edge of the lever plate 41 and extends radially along the lever plate 41. The opening of the mounting groove 411 faces the inner wall of the distribution chamber 3 and is used to accommodate and fix the scraper 42. Preferably, the mounting groove 411 is a rectangular groove or a T-shaped groove, and the scraper 42 is installed in the mounting groove 411 by plugging or bolting, which facilitates the replacement of the scraper 42 after wear.

[0044] The scraper 42 is installed in the mounting groove 411, and its outer edge contacts or maintains a slight gap with the inner wall of the spreading chamber 3 when it rotates with the spreading disc 4. When the spreading disc 4 rotates at high speed, the scraper 42 rotates together with the deflector 41 around the axis of the output shaft 8, and its outer edge slides or nearly slides along the inner wall surface of the spreading chamber 3, scraping off the de-icing agent adhering to the inner wall of the spreading chamber 3, so that it returns to the spreading area of ​​the spreading disc 4 or is thrown out of the spreading chamber 3. The de-icing agent adhering to the inner wall of the spreading chamber 3 mainly comes from the collision and rebound of particles with the inner wall during the spreading process and the adhesion of wet de-icing agent. If it is not cleaned in time, its accumulation may affect the rotational balance of the spreading disc 4 and the uniformity of spreading.

[0045] The scraper 42 ensures continuous cleaning of the inner wall of the distribution chamber 3 during operation, reducing the residue and agglomeration of de-icing agent on the inner wall. This helps maintain smooth rotation of the spreading disc 4 and stable spreading volume. The scraper 42 rotates synchronously with the spreading disc 4, requiring no additional drive device and featuring a simple structure. Preferably, the scraper 42 is made of an elastic material, such as rubber or polyurethane, with its outer edge forming an interference fit with the inner wall of the distribution chamber 3. This effectively removes adhering de-icing agent without scratching the inner wall.

[0046] In this embodiment, the scraper 42 is made of an elastic material, and its outer edge is in interference contact with the inner wall of the distribution chamber 3.

[0047] In one embodiment of the present invention, a crossbar 21 is provided inside the hopper 2, and the two ends of the crossbar 21 are fixed to the opposite inner wall of the hopper 2, which is used to improve the structural strength of the hopper 2 and to break the arch of the de-icing agent inside.

[0048] It should be noted that the crossbar 21 is installed inside the hopper 2, with its two ends fixed to the opposite inner walls of the hopper 2. The crossbar 21 spans the internal space of the hopper 2, connecting the opposite side walls of the hopper 2 and acting as a reinforcing rib. When the hopper 2 is loaded with a large amount of de-icing agent, the side walls of the hopper 2 bear significant lateral pressure. The crossbar 21 forms internal support between the opposite inner walls of the hopper 2, resisting the tendency of the side walls to deform inwards and outwards, thereby improving the overall structural rigidity and load-bearing capacity of the hopper 2 and reducing deformation of the hopper 2 due to bumps and vibrations during transportation and operation.

[0049] The crossbar 21 is located in the lower part of the hopper 2, near the lower outlet of the hopper 2. When the de-icing agent forms clumps or arches due to moisture or prolonged stagnation in the hopper 2, the crossbar 21 acts as an obstacle fixed within the hopper 2, disrupting the continuity between the clumps. As the de-icing agent moves downwards under gravity, the clumps are blocked and broken by the crossbar 21, the arch structure is destroyed, and the de-icing agent returns to a loose state, allowing it to continue flowing downwards to the distribution assembly 5. The crossbar 21 requires no additional power; its structure alone is sufficient to break up the arches in the internal de-icing agent.

[0050] Preferably, the crossbar 21 is made of round steel, square steel, or steel pipe, and its two ends are fixed to the inner wall of the hopper 2 by welding or bolting. There can be one or more crossbars 21, and multiple crossbars 21 can be arranged in parallel or cross directions in the hopper 2 to enhance the arch-breaking effect and structural reinforcement.

[0051] In one embodiment of the present invention, the power input component 7 is a connecting rod, and the outer surface of the connecting rod is provided with a groove 71 along the axial direction for cooperating with the protruding key at the power output end of the vehicle to transmit torque.

[0052] It should be noted that the power input component 7 is a connecting rod, located at the rear end of the drive housing 6, used to transmit the rotational power of the vehicle's power output shaft to the transmission mechanism inside the drive housing 6. The outer surface of the connecting rod has an axially oriented groove 71. The cross-sectional shape of the groove 71 matches the cross-sectional shape of the raised key on the vehicle's power output end, and the two together form a keyed connection structure. When the vehicle's power output end rotates, the raised key is embedded in the groove 71, transmitting torque to the connecting rod through the keyed connection. The connecting rod then transmits the rotational motion to the drive housing 6.

[0053] The groove 71 extends axially along the connecting rod, and its length is determined according to the mating stroke with the vehicle's power output end. The groove 71 allows for axially sliding torque transmission between the connecting rod and the vehicle's power output end; that is, when the vehicle's power output end and the connecting rod are mated, a certain degree of relative sliding in the axial direction is allowed, facilitating quick mating and installation while ensuring reliable transmission of rotational torque. There can be one or more grooves 71, evenly distributed circumferentially on the outer surface of the connecting rod to balance the force. Preferably, the groove 71 is a rectangular keyway or an involute spline, and the connecting rod is made of alloy steel and heat-treated to improve surface hardness and wear resistance.

[0054] During operation, the vehicle's power output rotates, and the raised key is embedded in the groove 71 of the connecting rod. The rotational motion is transmitted through the connecting rod to the transmission mechanism in the drive box 6. The transmission mechanism drives the output shaft 8 to rotate, which in turn drives the spreading disc 4 and the stirring rod 9 to rotate. The combination of groove 71 and raised key has a simple structure, reliable torque transmission, and convenient disassembly, making it suitable for usage scenarios where frequent connection and disconnection between maintenance vehicles and spraying devices are required.

[0055] In one embodiment of the present invention, the output shaft 8 passes through the valve plate 52 and the baffle plate 51, and the valve plate 52 and the baffle plate 51 are respectively provided with a central hole for the output shaft 8 to pass through.

[0056] It should be noted that the output shaft 8 passes through the valve plate 52 and the baffle plate 51 in its path extending upward from the drive box 6 into the hopper 2. The valve plate 52 and the baffle plate 51 are respectively provided with a central hole for the output shaft 8 to pass through. The diameter of the central hole is slightly larger than the outer diameter of the output shaft 8 to ensure that the output shaft 8 can rotate freely in the central hole without interfering with the valve plate 52 and the baffle plate 51.

[0057] A central hole is located at the center of the valve plate 52. After the output shaft 8 passes through this central hole, the valve plate 52 can rotate relative to the baffle plate 51 around the axis of the output shaft 8. The output shaft 8 serves as the rotational center axis of the valve plate 52, and the rotational adjustment action of the valve plate 52 and the rotational drive action of the output shaft 8 do not interfere with each other; they move independently. A central hole is located at the center of the baffle plate 51. The baffle plate 51 is fixed to the lower end of the hopper 2. After the output shaft 8 passes through this central hole, a clearance fit is maintained between it and the baffle plate 51. The rotation of the output shaft 8 will not cause the baffle plate 51 to move.

[0058] The output shaft 8 passes sequentially through the baffle plate 51 and the valve plate 52, allowing the material distribution assembly 5 and the output shaft 8 to be arranged coaxially in space, resulting in a compact structure and reduced lateral dimensions of the device. A single output shaft 8 simultaneously performs three functions: driving the spreading disc 4, driving the stirring rod 9, and providing a rotational center shaft for the valve plate 52, simplifying the transmission and support structure of the device. Preferably, a bushing or bearing can be installed in the central hole of the valve plate 52 to reduce the frictional resistance between the valve plate 52 and the output shaft 8 during rotation, improving rotational flexibility and service life.

[0059] In one embodiment of the present invention, the stirring rod 9 is a rod structure, the lower end of which is fixedly connected to the upper end of the output shaft 8 and rotates synchronously with the output shaft 8.

[0060] It should be noted that the stirring rod 9 is a rod-shaped structure located in the lower part of the hopper 2, with its lower end fixedly connected to the upper end of the output shaft 8. The stirring rod 9 rotates synchronously with the output shaft 8, agitating the de-icing agent near the bottom outlet of the hopper 2 during rotation. De-icing agents that have become damp or remained stagnant for a long time in the hopper 2 are prone to forming clumps or material arches at the bottom, hindering the smooth flow of the de-icing agent to the distribution assembly 5. When the stirring rod 9 rotates, the rod continuously agitates the surrounding de-icing agent particles, breaking down the bonding and bridging structures between the particles, loosening the clumps and restoring their fluidity, thereby ensuring a continuous and stable flow of de-icing agent from the hopper 2 into the distribution chamber 3.

[0061] The stirring range of the stirring rod 9 covers the lower outlet area of ​​the hopper 2, corresponding to the material discharge channel of the dispensing component 5. The length and shape of the stirring rod 9 are designed according to the size of the bottom outlet of the hopper 2 so that it can reach the de-icing agent around the outlet when rotating. Preferably, the stirring rod 9 is a straight rod structure, and its axis is perpendicular to or at a certain angle to the axis of the output shaft 8 to increase the stirring radius. The stirring rod 9 and the output shaft 8 can be fixed by welding, threaded connection or key connection to ensure reliable connection and prevent loosening during long-term operation. The stirring rod 9 is made of stainless steel or corrosion-resistant steel to resist corrosion from the de-icing agent.

[0062] In one embodiment of the present invention, the driving element 54 is characterized by being any one of an electric push rod, a hydraulic cylinder, or a manually adjusting screw.

[0063] It should be noted that the drive component 54 is the power source for adjusting the material distribution assembly 5, used to drive the valve plate 52 to rotate relative to the baffle plate 51, thereby adjusting the actual opening of the material discharge port. One end of the drive component 54 is connected to the connecting rod 53, and the other end is hinged to the mounting bracket 1. The drive component 54 can be selected from any one of the following: an electric push rod, a hydraulic cylinder, or a manual adjusting screw, depending on the overall configuration and usage requirements of the device.

[0064] When the drive unit 54 is an electric push rod, the electric push rod is powered by the vehicle's power supply. The operator can drive the valve plate 52 to rotate from the cab via a control switch, realizing remote electric control adjustment of the spreading amount. It is convenient to operate and suitable for operation scenarios that require frequent adjustment of the spreading amount. The electric push rod has a self-locking mechanism inside, which can maintain the current position of the valve plate 52 after power failure, without the need for an additional locking device.

[0065] When a hydraulic cylinder is selected as the drive component 54, it can share the hydraulic power source with the maintenance vehicle's hydraulic system. The extension and retraction direction and speed of the hydraulic cylinder are controlled by a directional valve. Hydraulic cylinders have high driving force and are suitable for large de-icing agent spraying devices or high-load conditions.

[0066] When the drive component 54 is a manually adjustable screw, the operator drives the valve plate 52 to rotate by rotating the screw handle. The manually adjustable screw has a simple structure, requires no power or hydraulic source, has low manufacturing cost, and is suitable for small devices or applications where frequent adjustments to the spreading amount are not required. The thread self-locking characteristic of the manually adjustable screw ensures that the valve plate 52 remains stable in the adjusted position.

[0067] One end of the drive component 54 is connected to the connecting rod 53, and the other end is hinged to the mounting bracket 1. This hinged connection allows the drive component 54 to swing at an angle during operation, following the movement of the connecting rod 53, thus avoiding motion interference. The stroke of the drive component 54 corresponds to the rotation angle range of the valve plate 52. By controlling the extension and retraction of the drive component 54, the rotation angle of the valve plate 52 can be controlled, thereby adjusting the overlapping area between the second discharge hole 521 and the first discharge hole 511, achieving stepless adjustment of the discharge amount.

[0068] When using this device, the mounting bracket 1 is fixedly connected to the frame or rear mounting position of the maintenance vehicle, and the power input component 7 is connected to the power output end of the vehicle, so that the groove 71 on the outer surface of the connecting rod engages with the protruding key on the power output end of the vehicle. De-icing agent is then added to the hopper 2.

[0069] Vehicle power is transmitted to drive box 6 via power input component 7. The transmission mechanism inside drive box 6 drives output shaft 8 to rotate. Output shaft 8 simultaneously drives spreader disc 4 and stirring rod 9 to rotate. Stirring rod 9 rotates synchronously with output shaft 8, agitating the de-icing agent near the bottom outlet of hopper 2, breaking up clumps and bridging formed by moisture or stagnation, keeping the de-icing agent in a loose state. Crossbar 21 inside hopper 2 acts as a de-bridging mechanism for the internal de-icing agent. Clumps are blocked and broken by crossbar 21, the arch structure is destroyed, and the de-icing agent continues to flow downward after becoming loose again.

[0070] The de-icing agent falls into the central area of ​​the spreading disc 4 through the material distribution component 5. The spreading disc 4 rotates at high speed, and the deflector 41 pushes the de-icing agent radially. Under the action of centrifugal force, the de-icing agent is thrown onto the road surface from the spreading opening 31 at the front end of the spreading chamber 3, completing the de-icing agent spreading operation.

[0071] During the spreading process, the scraper 42 rotates with the spreading disc 4, and its outer edge slides along the inner wall surface of the spreading chamber 3, scraping off the de-icing agent adhering to the inner wall of the spreading chamber 3, so that it returns to the spreading area of ​​the spreading disc 4 or is thrown out of the spreading chamber 3.

[0072] When the spreading amount needs to be adjusted, the drive component 54 extends and retracts, driving the valve plate 52 to rotate relative to the baffle plate 51 via the connecting rod 53. As the valve plate 52 rotates, the overlapping area between the second discharge hole 521 and the first discharge hole 511 changes, thus altering the actual opening of the discharge port. When the spreading amount needs to be increased, the drive component 54 drives the valve plate 52 to rotate in a direction that increases the overlapping area between the second discharge hole 521 and the first discharge hole 511; when the spreading amount needs to be decreased or spreading needs to be stopped, the drive component 54 drives the valve plate 52 to rotate in a direction that causes the two to intersect. Operators can adjust the discharge amount in real time according to road conditions and operational needs while the vehicle is in motion, without stopping the vehicle or disassembling components.

[0073] In summary, the de-icing agent spraying device for highway maintenance according to this invention achieves stepless adjustment of the discharge amount through the overlap and staggering of the discharge holes on the baffle plate and the rotatable valve plate. It is easy to operate and can adjust the spreading amount in real time according to road conditions and operational needs. A single output shaft simultaneously drives the spreading disc and the stirring rod to rotate, allowing the spreading and stirring functions to share the same power source and transmission path, simplifying the transmission structure, reducing manufacturing costs, and improving the reliability of the linkage between various moving parts. The scraper on the edge of the baffle plate scrapes away the de-icing agent adhering to the inner wall of the spreading chamber as the spreading disc rotates, reducing residue and agglomeration, and maintaining smooth rotation of the spreading disc and stable spreading amount. The crossbar inside the hopper not only improves the structural strength of the hopper but also breaks up arches in the internal de-icing agent, ensuring smooth discharge.

[0074] In summary, the de-icing agent spraying device for highway maintenance according to this invention achieves stepless adjustment of the discharge amount through the overlap and staggering of the discharge holes on the baffle plate and the rotatable valve plate. It is easy to operate and can adjust the spreading amount in real time according to road conditions and operation requirements, avoiding waste or insufficient spreading of de-icing agent. The single output shaft drives the spreading disc and the stirring rod to rotate simultaneously, so that the spreading and stirring functions share the same power source and transmission path, simplifying the transmission structure, reducing manufacturing costs, and improving the linkage reliability and overall operating efficiency between various moving parts. The scraper set on the edge of the baffle plate scrapes off the de-icing agent adhering to the inner wall of the spreading chamber as the spreading disc rotates, reducing the residue and agglomeration on the inner wall, and keeping the spreading disc rotating smoothly and the spreading amount stable.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A de-icing agent application device for highway maintenance, characterized in that, include: Mounting bracket (1) is used for fixed connection with the vehicle; The hopper (2) is installed on the mounting frame (1); The dispersing chamber (3) is connected to the lower end of the hopper (2). Its front end is provided with a dispersing opening (31), and its interior is provided with a rotatable dispersing disc (4). The dispersing disc (4) is provided with multiple levers (41). The material distribution component (5) is located at the connection between the hopper (2) and the distribution chamber (3) and is used to adjust the amount of snow melting that falls from the hopper (2) into the distribution chamber (3); The drive box (6) is installed on the mounting frame (1) and located below the distribution chamber (3). It has a transmission mechanism inside and a power input component (7) for connecting to external power at its rear end. The output shaft (8) is connected to the transmission mechanism inside the drive box (6). Its upper end extends upward through the distribution chamber (3) and the material distribution assembly (5) and then into the lower side of the hopper (2). The spreading disc (4) is fixedly connected to the output shaft (8), and the upper end of the output shaft (8) is connected to the stirring rod (9). The output shaft (8) simultaneously drives the spreading disc (4) and the stirring rod (9) to rotate.

2. The snowmelt agent spraying device for road maintenance according to claim 1, characterized in that, The material distribution component (5) includes: A baffle plate (51) is fixedly installed at the lower end of the hopper (2), and at least one first discharge hole (511) is provided on it. The valve plate (52) is rotatably stacked above or below the baffle plate (51), and a second discharge hole (521) corresponding to the first discharge hole (511) is provided on it. When the valve plate (52) rotates relative to the baffle plate (51), the second discharge hole (521) and the first discharge hole (511) switch between completely overlapping and completely intersecting to adjust the actual opening of the discharge port.

3. The snowmelt agent spraying device for road maintenance according to claim 2, characterized in that, The valve plate (52) is provided with a connecting rod (53) on its outer periphery. The connecting rod (53) is connected to one end of a driving member (54). The other end of the driving member (54) is hinged to the mounting bracket (1). The driving member (54) drives the valve plate (52) to rotate relative to the baffle plate (51).

4. The snow-melting agent spraying device for road maintenance according to claim 1, characterized in that, The edge of the lever (41) is provided with an installation groove (411), and a scraper (42) is installed in the installation groove (411). When the outer edge of the scraper (42) rotates with the spreading disc (4), it scrapes off the de-icing agent attached to the inner wall of the spreading chamber (3).

5. The snowmelt agent spraying device for road maintenance according to claim 4, wherein The scraper (42) is made of an elastic material, and its outer edge is in interference contact with the inner wall of the distribution chamber (3).

6. The de-icing agent application device for highway maintenance according to claim 1, characterized in that, The hopper (2) is provided with a crossbar (21) inside. The two ends of the crossbar (21) are fixed to the relative inner walls of the hopper (2) to improve the structural strength of the hopper (2) and to break the arch of the de-icing agent inside.

7. The snowmelt agent spraying device for road maintenance according to claim 2, wherein The power input component (7) is a connecting rod, and the outer surface of the connecting rod has a groove (71) along the axial direction for cooperating with the protruding key at the power output end of the vehicle to transmit torque.

8. The snow-melting agent spraying device for road maintenance according to claim 2, characterized in that, The output shaft (8) passes through the valve plate (52) and the baffle plate (51), and the valve plate (52) and the baffle plate (51) are respectively provided with central holes for the output shaft (8) to pass through.

9. The snowmelt agent spraying device for road maintenance according to claim 1, wherein The stirring rod (9) is a rod structure, and its lower end is fixedly connected to the upper end of the output shaft (8), rotating synchronously with the output shaft (8).

10. The snowmelt agent spraying device for road maintenance according to claim 3, wherein The drive component (54) is any one of an electric push rod, a hydraulic cylinder, or a manually adjusting screw.

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