Emulsified asphalt spraying machine

Abstract

The utility model provides an emulsified asphalt spraying machine which comprises a machine frame and a spraying device, the spraying device is installed on the machine frame, and the spraying device comprises a supporting rod, an adjusting assembly, a central spraying head and two telescopic assemblies. The supporting rod is mounted on the rack; the two telescopic assemblies are symmetrically arranged on the two sides of the supporting rod in a sliding mode. The adjusting assembly comprises a driving motor, a driving shaft, a driving bevel gear and two transmission units; the driving motor is fixed on the supporting rod; the position of the central spray head can be adjusted in the axial direction of the screw rod through the driving motor and the adjusting assembly, and different spraying width requirements are met; and meanwhile, the first electric cylinder drives the externally-expanded spray head to achieve telescopic movement on the two sides, and the overall spraying range of the equipment is further expanded. And the central spray head is responsible for accurately spraying a narrow area, the outwards-expanded spray heads cover a wider working face, spraying dead angles are avoided through cooperation of the central spray head and the outwards-expanded spray heads, and the working efficiency and quality are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of emulsified asphalt spraying equipment, specifically an emulsified asphalt spraying machine. Background Technology

[0002] Emulsified asphalt spraying machines are specialized equipment commonly used in road maintenance, construction, and repair operations. Their main function is to evenly spray emulsified asphalt onto curbs, road surfaces, or other areas requiring treatment to enhance adhesion, provide waterproofing, improve slip resistance, and protect the surface. With the increasing demand for urban road construction and highway maintenance, the role of emulsified asphalt spraying machines in construction is becoming increasingly prominent. However, existing spraying equipment still has many shortcomings in practical use. These problems not only affect construction efficiency but also limit the equipment's application scenarios and operational effectiveness.

[0003] Existing emulsified asphalt spraying machines generally use fixed nozzle arrangements, making it difficult to flexibly adjust the spraying width. When the work area is large, construction workers need to frequently move the spraying machine to cover more areas, which not only increases labor intensity but also reduces construction efficiency. At the same time, in some scenarios requiring precise spraying (such as curb edges or narrow areas), the non-adjustable nozzle position often results in insufficient spraying area or over-coverage, affecting the final spraying effect.

[0004] Emulsified asphalt materials have a certain degree of fluidity, and improper control during spraying can easily lead to uneven spraying or material waste. Especially in complex areas such as curbs, existing equipment often cannot effectively control the spraying angle, pressure, and range, resulting in unsatisfactory edge spraying, and even problems such as asphalt overflow or excessive thickness in certain areas. This not only affects the aesthetics of the finished product but may also increase construction costs due to asphalt waste.

[0005] Although emulsified asphalt spraying machines are an indispensable piece of equipment in modern road construction, their design concepts and application effects still have many limitations and cannot fully meet the complex and ever-changing construction needs. Utility Model Content

[0006] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide an emulsified asphalt spraying machine to improve the operating efficiency and adaptability of the emulsified asphalt spraying machine.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An emulsified asphalt spraying machine includes a frame and a spraying device. The spraying device is mounted on the frame and includes a support rod, an adjusting assembly, a central nozzle, and two telescopic assemblies. The support rod is mounted on the frame. The two telescopic assemblies are slidably and symmetrically arranged on both sides of the support rod. The adjusting assembly includes a drive motor, a drive shaft, a driving bevel gear, and two transmission units. The drive motor is fixed to the support rod. One end of the drive shaft is rotatably mounted on the support rod, and the other end is connected to the output shaft of the drive motor. The driving bevel gear is mounted on the drive shaft. The two transmission units are symmetrically arranged on both sides of the drive shaft. Each transmission unit includes a transmission tube frame, a driven bevel gear, a screw, a screw sleeve, and a connecting rod. The transmission tube frame is fixed to the support rod. The screw is rotatably disposed within the transmission tube frame. The driven bevel gear is mounted at one end of the screw and meshes with the driving bevel gear. The screw sleeve is movably disposed within the transmission tube frame and sleeved onto the screw. One end of the connecting rod is fixedly connected to the screw sleeve, and the other end is fixedly connected to the central nozzle.

[0009] Preferably, the telescopic assembly includes a first electric cylinder, a guide plate, a slide rod, and an outward-expanding nozzle; an upper support roller and a lower support roller are mounted on the support rod, and one end of the guide plate is slidably disposed between the upper support roller and the lower support roller; the slide rod is fixed to one side of the guide plate; one end of the first electric cylinder is hinged to the support rod, and the other end is hinged to the slide rod; the outward-expanding nozzle is fixed to the slide rod.

[0010] Preferably, a second electric cylinder and a guide sleeve are installed on the frame; a guide rod is fixedly installed on the support rod, and one end of the guide rod is slidably inserted into the guide sleeve; one end of the second electric cylinder is hinged to the support rod.

[0011] Preferably, it also includes a central limiting cover; the central limiting cover is fixed to the bottom of the support rod; the bottom of the central limiting cover is provided with a first opening, and the top is provided with a first guide hole adapted to the central nozzle.

[0012] Preferably, it further includes an outward expansion limiting cover; the outward expansion limiting cover is fixed to the bottom of the slide rod; the bottom of the outward expansion limiting cover is provided with a second opening, and the top is provided with a second guide hole adapted to the central nozzle; the lower end of the outward expansion nozzle extends into the interior of the outward expansion limiting cover; the central limiting cover is provided with a third guide hole adapted to the outward expansion nozzle.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Flexible expansion of the spraying range

[0015] The coordinated design of the central nozzle and the outer nozzle: The central nozzle can be adjusted along the screw axis by a drive motor and adjustment components to adapt to different spraying width requirements; at the same time, the outer nozzle is driven by the first electric cylinder to achieve telescopic movement on both sides, further expanding the overall spraying range of the equipment.

[0016] Multi-level adjustment achieves precise coverage: the central nozzle is responsible for precisely spraying narrow areas, while the outer nozzles cover a wider working surface. The two work together to avoid spraying dead corners and significantly improve work efficiency and quality.

[0017] 2. Spraying precision is significantly improved.

[0018] Optimized design of the limiting cover: The central limiting cover and the outer limiting cover provide guidance and protection for the central nozzle and the outer nozzle, respectively, to ensure that the emulsified asphalt is sprayed only on the target area, avoid asphalt overflow or spray deviation, and improve the uniformity and aesthetics of the spray.

[0019] Precise motion control: By limiting the axial movement of the screw sleeve on the screw and guiding the connecting rod, the central nozzle moves precisely along the axial direction, avoiding mechanical vibration from interfering with the spraying position and achieving high-precision operation.

[0020] 3. Convenience of height adjustment

[0021] Versatile height adjustment mechanism: The second electric cylinder drives the guide rod to move relative to the frame, quickly adjusting the overall height of the spraying device. This allows the device to flexibly adapt to height variations in different work areas, maintaining a suitable spraying distance whether at the edge of a curb or in low-lying areas of the road.

[0022] Automated height adjustment: Compared with traditional designs that rely on manual adjustment, this invention achieves automated adjustment through a second electric cylinder, saving time and effort while improving the safety and accuracy of operation.

[0023] 4. Enhanced stability during the spraying process

[0024] Mechanical guidance and support design: The support rod, through the cooperation of the upper and lower rollers and the guide rod, keeps the spraying device stable during movement and reduces uneven spraying caused by equipment shaking.

[0025] The rational layout of the connecting rod and transmission components: the sliding restriction of the connecting rod in the through hole and the stable installation of the transmission tube frame effectively prevent the shaking or deviation of the connecting rod during the movement, ensuring the continuity and stability of the spraying operation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2This is a schematic diagram of the installation of the spraying device in this utility model;

[0028] Figure 3 This is a schematic diagram of the spraying device in this utility model;

[0029] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0030] Figure 5 This is a three-dimensional structural diagram of the spraying device in this utility model;

[0031] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0032] Figure 7 This is a schematic diagram of the structure of the adjustment component in this utility model;

[0033] Figure 8 for Figure 7 A magnified view of a section at point C.

[0034] in:

[0035] 1. Frame; 2. Drive motor; 3. Central limiting cover; 4. Outer limiting cover; 5. Guide plate; 6. Slide rod; 7. Guide rod; 8. Second electric cylinder; 9. Guide sleeve; 10. First electric cylinder; 11. Transmission tube frame; 12. Support rod; 13. Upper roller; 14. Through hole; 15. Central nozzle; 16. Lower roller; 17. Second guide hole; 18. Outer nozzle; 19. Third guide hole; 20. Screw sleeve; 21. Connecting rod; 22. Screw; 23. Driven bevel gear; 24. Drive shaft; 25. Driving bevel gear. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] like Figures 1 to 8As shown, an emulsified asphalt spraying machine includes a frame 1 and a spraying device. The spraying device is mounted on the frame 1 and includes a support rod 12, an adjusting assembly, a central nozzle 15, and two telescopic assemblies. The support rod 12 is mounted on the frame 1. The two telescopic assemblies are slidably and symmetrically arranged on both sides of the support rod 12. The adjusting assembly includes a drive motor 2, a drive shaft 24, a drive bevel gear 25, and two transmission units. The drive motor 2 is fixed on the support rod 12. One end of the drive shaft 24 is rotatably mounted on the support rod 12, and the other end is connected to the output shaft of the drive motor 2. The drive bevel gear... 25 is mounted on drive shaft 24; two transmission units are symmetrically arranged on both sides of drive shaft 24; the transmission unit includes transmission tube frame 11, driven bevel gear 23, screw 22, screw sleeve 20 and connecting rod 21; transmission tube frame 11 is fixed on support rod 12; screw 22 is rotatably arranged in transmission tube frame 11; driven bevel gear 23 is installed at one end of screw 22 and meshes with drive bevel gear 25; screw sleeve 20 is movably placed in transmission tube frame 11 and sleeved on screw 22; one end of connecting rod 21 is fixedly connected to screw sleeve 20, and the other end is fixedly connected to central nozzle 15.

[0038] To improve transmission efficiency, the driving bevel gear 25 and driven bevel gear 23 in this embodiment are machined from high-precision materials, possessing excellent wear resistance and high transmission efficiency, ensuring that the screw 22 rotates smoothly under the drive motor 2. The drive motor 2 is selected as a high-torque, low-noise type, which not only ensures transmission stability but also reduces equipment operating noise.

[0039] When the drive motor 2 starts, the screw 22 rotates through the meshing of the driving bevel gear 25 and the driven bevel gear 23. One end of the connecting rod 21 extends into the transmission tube frame 11, and the other end extends outside the transmission tube frame 11. The transmission tube frame 11 is provided with a through hole 14 to accommodate the connecting rod 21. The connecting rod 21 slides in the through hole 14, so that the screw sleeve 20 can only move along the axis of the screw 22 without rotating within the transmission tube frame 11. This causes the connecting rod 21 to drive the central nozzle 15 to move along the axis of the screw 22. When the central nozzle 15 moves towards the drive motor 2, it provides space for the retraction of the telescopic component. When the central nozzle 15 moves away from the drive motor 2, and the telescopic component also moves outward, it increases the overall spraying range of the spraying machine.

[0040] In this embodiment, the telescopic assembly includes a first electric cylinder 10, a guide plate 5, a slide rod 6, and an outward-expanding nozzle 18; an upper roller 13 and a lower roller 16 are mounted on the support rod 12, and one end of the guide plate 5 is slidably disposed between the upper roller 13 and the lower roller 16; the slide rod 6 is fixed to one side of the guide plate 5; one end of the first electric cylinder 10 is hinged to the support rod 12, and the other end is hinged to the slide rod 6; the outward-expanding nozzle 18 is fixed to the slide rod 6.

[0041] To ensure the stability of the outward-expanding nozzle 18, the width and thickness of the guide plate 5 are optimized to withstand the lateral and longitudinal forces generated during operation. The sliding connection between the guide plate 5 and the upper and lower idler rollers 16 uses a low-friction material, further improving sliding smoothness and extending the service life of the idler rollers. In addition, the slide bar 6 and the guide plate 5 adopt a high-strength hinge, which can maintain structural stability during telescopic movement and avoid deviation during the spraying process.

[0042] When the piston rod of the first electric cylinder 10 extends, it drives the guide plate 5, the slide rod 6, and the outward-expanding nozzle 18 to move outward, increasing the working area. The connection between the guide plate 5 and the first electric cylinder 10 adopts a quick-disassembly design, which facilitates on-site replacement or adjustment and further improves the adaptability of the equipment.

[0043] In this embodiment, a second electric cylinder 8 and a guide sleeve 9 are installed on the frame 1; a guide rod 7 is fixedly installed on the support rod 12, and one end of the guide rod 7 is slidably inserted into the guide sleeve 9; one end of the second electric cylinder 8 is hinged to the support rod 12.

[0044] To improve equipment adaptability, a wear-resistant liner is installed inside the guide sleeve 9 to reduce friction between the guide rod 7 and the sleeve, thereby improving the stability of overall height adjustment. The piston rod of the second electric cylinder 8 is designed with a multi-stage telescopic structure, which can meet the height adjustment needs under various complex road conditions, especially when there are large height differences in the working area, ensuring that the distance between the central nozzle 15 and the outer nozzle 18 and the ground is always within a suitable range.

[0045] The piston rod of the second electric cylinder 8 extends and retracts, causing the frame 1 to move downwards and upwards, adjusting the distance between the central nozzle 15, the outer nozzle 18 and the working area.

[0046] In this embodiment, a central limiting cover 3 is also included. The central limiting cover 3 is fixed to the bottom of the support rod 12. The bottom of the central limiting cover 3 is provided with a first opening, and the top is provided with a first guide hole adapted to the central nozzle 15. The first electric cylinder 10 pulls the central nozzle 15 to move within the first guide hole. The central limiting cover 3 is used to cover the curb during operation, and the central nozzle 15 sprays emulsified asphalt onto the curb inside the central limiting cover 3.

[0047] To prevent emulsified asphalt from adhering to the inner wall of the central limiting cover 3, an anti-stick coating is applied to the inner wall of the limiting cover, which facilitates cleaning and improves the quality of operation.

[0048] In this embodiment, an outward expansion limiting cover 4 is also included; the outward expansion limiting cover 4 is fixed to the bottom of the slide rod 6; the bottom of the outward expansion limiting cover 4 is provided with a second opening, and the top is provided with a second guide hole 17 adapted to the central nozzle 15; the lower end of the outward expansion nozzle 18 extends into the interior of the outward expansion limiting cover 4; the central limiting cover is provided with a third guide hole 19 adapted to the outward expansion nozzle 18.

[0049] To improve safety and stability, a shock-absorbing design has been added inside the outer expansion limit cover 4 to avoid uneven spraying caused by vibration during telescopic movement.

[0050] The second guide hole 17 is used to provide space for the central nozzle 15 during the telescopic movement of the outer expansion limiting cover 4; the third guide hole 19 is used to provide space for the outer expansion nozzle 18 during the telescopic movement of the outer expansion limiting cover 4 to prevent collision problems.

[0051] Working principle

[0052] This emulsified asphalt spraying machine is based on the principle of coordinated operation of mechanical transmission and multi-degree-of-freedom adjustment system to achieve efficient and precise spraying operations.

[0053] Motion control of the spraying device

[0054] After the drive motor 2 starts, it drives the driving bevel gear 25 to rotate via the drive shaft 24. The driving bevel gear 25 meshes with the symmetrically arranged driven bevel gear 23, thereby driving the screw 22 to rotate. The screw 22 and the screw sleeve 20 are connected by a thread, converting the rotational motion into linear motion. The screw sleeve 20 is limited by the transmission tube frame 11 and can only move along the axis of the screw 22, thereby driving the connecting rod 21 to pull the central nozzle 15 up and down in the axial direction.

[0055] While the screw 22 rotates and drives the central nozzle 15 to move to one side, the first electric cylinder 10 in the telescopic assembly is activated, and the piston rod pushes the slide rod 6 and the outward-expanding nozzle 18 to move outward along the guide plate 5, further expanding the spraying range.

[0056] Altitude adjustment mechanism

[0057] The piston rod of the second electric cylinder 8 extends and retracts, driving the guide rod 7 to slide within the guide sleeve 9, thereby adjusting the overall height of the frame 1. This design ensures that the spraying device can flexibly adjust the distance between the central nozzle 15 and the outer nozzle 18 and the working surface according to terrain conditions, ensuring spraying uniformity and efficiency.

[0058] Limiting cover and spraying precision

[0059] During operation, the central limiting cover 3 covers the curb, and the central nozzle 15 precisely sprays emulsified asphalt through the guide hole, avoiding spraying onto non-target areas. The outward limiting cover 4 moves with the outward movement of the telescopic component, and its internal structure also ensures the spraying accuracy of the outward nozzle 18 through the guide design. At the same time, the opening size of the limiting cover and the guide hole leave enough space to accommodate the dynamic movement of the nozzle.

[0060] How to use

[0061] Preparation

[0062] Ensure the power supply to the spraying machine, the emulsified asphalt storage device, and related accessories are properly connected. Check the status of drive motor 2, first electric cylinder 10, and second electric cylinder 8 to confirm there are no abnormalities.

[0063] Adjust the height of the guide sleeve 9 according to the operational requirements to ensure that the initial distance between the spraying device and the ground is appropriate.

[0064] Start the device

[0065] Start the drive motor 2 and observe whether the initial position of the central nozzle 15 is correct. Adjust the motor speed as needed to match the rotation speed of the screw 22 with the spraying requirements.

[0066] Start the first electric cylinder 10, push the outward-expanding nozzle 18 to the appropriate outward distance, and adjust the spray coverage area.

[0067] Spraying operation

[0068] Push the sprayer to the work area, ensuring that the central limit cover 3 covers the curb and fits tightly against the ground.

[0069] Start the emulsified asphalt delivery system, and the emulsified asphalt will be sprayed evenly from the central nozzle 15 and the outer nozzles 18. Adjust the speed of the drive motor 2 and the stroke of the first electric cylinder 10 according to the working area to ensure uniform coverage.

[0070] If the height of the work area varies greatly, the overall height of the frame 1 can be adjusted by controlling the second electric cylinder 8 to keep the nozzle at a stable spraying distance.

[0071] Complete the task and clean up

[0072] After stopping the emulsified asphalt delivery, gradually shut down the drive motor 2, the first electric cylinder 10, and the second electric cylinder 8.

[0073] Move the equipment to the cleaning area and use cleaning agent and water to clean the central nozzle 15, the outer nozzle 18, the limiting cover and the guide assembly to avoid emulsified asphalt residue affecting subsequent use.

[0074] Inspect all mechanical parts to ensure there is no damage or looseness, and store the equipment in a dry environment after maintenance.

Claims

1. An emulsified asphalt spraying machine, comprising a frame (1) and a spraying device, the spraying device being mounted on the frame (1), characterized in that, The spraying device includes a support rod (12), an adjustment assembly, a central nozzle (15), and two telescopic assemblies; the support rod (12) is mounted on the frame (1); the two telescopic assemblies are slidably and symmetrically arranged on both sides of the support rod (12); the adjustment assembly includes a drive motor (2), a drive shaft (24), a drive bevel gear (25), and two transmission units; the drive motor (2) is fixed on the support rod (12); one end of the drive shaft (24) is rotatably mounted on the support rod (12), and the other end is connected to the output shaft of the drive motor (2); the drive bevel gear (25) is mounted on the drive shaft (24); the two transmission units are symmetrically arranged... The transmission unit is located on both sides of the drive shaft (24); the transmission unit includes a transmission tube frame (11), a driven bevel gear (23), a screw (22), a screw sleeve (20), and a connecting rod (21); the transmission tube frame (11) is fixed on the support rod (12); the screw (22) is rotatably installed inside the transmission tube frame (11); the driven bevel gear (23) is installed at one end of the screw (22) and meshes with the driving bevel gear (25) for transmission; the screw sleeve (20) is movably placed inside the transmission tube frame (11) and sleeved on the screw (22); one end of the connecting rod (21) is fixedly connected to the screw sleeve (20), and the other end is fixedly connected to the central nozzle (15).

2. The emulsified asphalt spraying machine as described in claim 1, characterized in that, The telescopic assembly includes a first electric cylinder (10), a guide plate (5), a slide rod (6), and an outward-expanding nozzle (18); an upper roller (13) and a lower roller (16) are mounted on the support rod (12), and one end of the guide plate (5) is slidably disposed between the upper roller (13) and the lower roller (16); the slide rod (6) is fixed on one side of the guide plate (5); one end of the first electric cylinder (10) is hinged to the support rod (12), and the other end is hinged to the slide rod (6); the outward-expanding nozzle (18) is fixed on the slide rod (6).

3. The emulsified asphalt spraying machine as described in claim 1, characterized in that, The frame (1) is equipped with a second electric cylinder (8) and a guide sleeve (9); a guide rod (7) is fixedly installed on the support rod (12), and one end of the guide rod (7) is slidably inserted into the guide sleeve (9); one end of the second electric cylinder (8) is hinged to the support rod (12).

4. The emulsified asphalt spraying machine as described in claim 2, characterized in that, It also includes a central limiting cover (3); the central limiting cover (3) is fixed to the bottom of the support rod (12); the bottom of the central limiting cover (3) is provided with a first opening, and the top is provided with a first guide hole adapted to the central nozzle (15).

5. The emulsified asphalt spraying machine as described in claim 4, characterized in that, It also includes an expansion limiting cover (4); the expansion limiting cover (4) is fixed to the bottom of the slide rod (6); the bottom of the expansion limiting cover (4) is provided with a second opening, and the top is provided with a second guide hole (17) adapted to the central nozzle (15); the lower end of the expansion nozzle (18) extends into the interior of the expansion limiting cover (4); the central limiting cover (3) is provided with a third guide hole (19) adapted to the expansion nozzle (18).

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