Low-dust polisher for road maintenance

Abstract

The utility model belongs to the road surface processing technical field, concretely relates to a low dust polisher for road surface maintenance, include: the machine body is installed fixed castor, movable castor and the handle of control movable castor, polishing device, polishing device installs on the machine body, its bottom is installed the grinding disc, the fence of surrounding grinding disc and install in the fence inside atomizing nozzle, polishing device is in the polishing posture, the bottom of fence always contacts ground, adjusting device, adjusting device installs on the machine body and drives polishing device to lift, water tank, water tank installs on the machine body and supplies water to atomizing nozzle through water pump. The utility model among them adopts adjustable lifting means to change the polishing amount of polishing initial stage, not only reduces the working noise, and also reduces the dust, adopts the water mist dust suppression means to replace the dust collection means simultaneously, further reduces the operating noise, promotes the experience degree of user.

Description

Technical Field

[0001] This utility model belongs to the field of road surface treatment technology, specifically relating to a low-dust grinder for road surface maintenance. Background Technology

[0002] In routine road maintenance, it is often necessary to clean surface markings and other adhering substances. Currently, machine grinding is commonly used for this purpose. However, the main problems with machine grinding are high noise and dust levels. This is because when the machine starts working, the grinding disc directly contacts the road surface, generating a large amount of grinding material and instantly producing a large amount of dust or particles, accompanied by significant noise. To address the dust problem, many manufacturers have added dust extraction devices. However, the fans in these dust extraction devices also generate considerable noise during operation, further exacerbating the discomfort for workers. Utility Model Content

[0003] The purpose of this invention is to provide a low-dust grinder for road maintenance, which can reduce the initial grinding amount through an adjustable grinding device and suppress dust through water mist, thereby reducing working noise and improving dust control.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a low-dust grinding machine for road surface maintenance, comprising: The machine body is equipped with fixed casters, movable casters, and a handle for controlling the movable casters; A grinding device is mounted on the machine body. A grinding disc, a barrier surrounding the grinding disc, and an atomizing nozzle installed inside the barrier are mounted on its bottom. When the grinding device is in the grinding posture, the bottom of the barrier is always in contact with the ground. An adjustment device is mounted on the machine body and drives the grinding device to rise and fall. A water tank is installed on the machine body and supplies water to the atomizing nozzle via a water pump.

[0005] Furthermore, the polishing device includes: A grinding frame, which is mounted on the machine body via a parallelogram mechanism; A transmission mechanism is mounted on the grinding frame and has an even number of input shafts and an even number of output shafts, with the grinding disc mounted at the bottom of each output shaft; A drive motor is mounted on the grinding frame and connected to the input shaft.

[0006] Furthermore, the transmission mechanism includes: The gear transmission group is provided in an even number, each gear transmission group has at least two gears that mesh sequentially, the input gears of all gear transmission groups mesh sequentially, and their output gears are mounted on the corresponding output shaft; The belt drive mechanism has an input pulley mounted on the main shaft of the drive motor and an output pulley coaxially mounted with any gear in one of the gear transmission groups.

[0007] Furthermore, the fencing includes: A retaining seat, which is installed on the bottom outer wall of the grinding frame; The fence body is mounted on the fence base and is made of soft woven fabric.

[0008] Furthermore, the enclosure seat has a skirt, and the upper edge of the enclosure body is fixed to the outer wall of the skirt.

[0009] Furthermore, multiple atomizing nozzles are provided on the horizontal section at the top of the skirt.

[0010] Furthermore, the adjustment device includes two electric actuators, which are symmetrically arranged and connected to the crank of the parallelogram mechanism.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The grinding device in this utility model adopts an adjustable lifting method to change the grinding amount in the initial stage of grinding, which not only reduces working noise, but also reduces dust; at the same time, water mist dust suppression method is used instead of dust suction method, further reducing operating noise and improving the user experience.

[0012] 2. The grinding device in this utility model is equipped with a barrier to prevent dust from escaping, and uses a softer woven material instead of the rubber or plastic barrier in the traditional machine. It can fit more tightly to the road surface to prevent dust from escaping, and can also absorb some dust by means of the microporous structure formed by its own weaving.

[0013] 3. The grinding device in this utility model uses multiple symmetrically distributed grinding discs to reduce the torque during rotation. In particular, when the number of grinding discs is even and they rotate in opposite directions, the torques can cancel each other out, making it easier for the user to control by hand. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural view of a preferred embodiment of the present invention; Figure 2 for Figure 1 The structural side view of the embodiment shown; Figure 3 for Figure 2A magnified view of a section at point A in the middle; Figure 4 for Figure 1 The structural bottom view of the embodiment shown; Figure 5 for Figure 1 Right view of the structure of the embodiment shown; Figure 6 for Figure 1 The diagram shows a three-dimensional view of the grinding device in the embodiment shown. Figure 7 for Figure 6 The side view of the structure of the grinding device shown.

[0015] Reference numerals: 1. Machine body; 2. Grinding device; 3. Adjustment device; 4. Water tank; 5. Fixed caster; 6. Movable caster; 7. Handle; 8. Vertical shaft; 9. Pin; 10. Grinding disc; 11. Enclosure; 12. Atomizing nozzle; 13. Grinding frame; 14. Drive motor; 15. Parallelogram mechanism; 16. Input shaft; 17. Output shaft; 18. Input gear; 19. Intermediate gear; 20. Output gear; 21. Central shaft; 22. Input pulley; 23. Output pulley; 24. Enclosure seat; 25. Enclosure body; 26. Skirt; 27. Crank; 28. Water pump; 29. ​​Pipeline. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0017] like Figures 1 to 7 As shown, this utility model provides a low-dust grinder for road maintenance, including a machine body 1, a grinding device 2, an adjusting device 3, and a water tank 4.

[0018] The main body 1 is constructed from welded steel profiles, forming a frame structure. A fixed caster 5 is mounted near the rear end of the bottom of the main body 1, while a movable caster 6 is mounted near the front end. A handle 7 for controlling the movable caster 6 is mounted at the front end of the main body 1. A vertical shaft 8 is rotatably mounted at the front end of the main body 1. The end of the handle 7 is hinged to the vertical shaft 8 via a pin 9, and the bottom of the vertical shaft 8 is connected to the movable caster 6. Operating the handle 7 allows the movable caster 6 to rotate left and right, thus controlling the overall steering operation. Simultaneously, the hinged connection at the end of the handle 7 allows it to swing up and down, facilitating user operation.

[0019] The grinding device 2 is mounted on the machine body 1 and can be raised and lowered to change the grinding volume. A grinding disc 10, a retaining wall 11, and atomizing nozzles 12 are mounted on the bottom of the grinding device 2. The retaining wall 11 forms a ring around the outer side of the bottom of the grinding device 2, creating a relatively enclosed grinding space within which the grinding disc 10 operates to grind the road surface below. Multiple atomizing nozzles 12 are also located within this grinding space, with their outlets facing inwards. When the grinding device 2 is in the grinding posture, the bottom of the retaining wall 11 remains in contact with the ground.

[0020] Specifically, the grinding device 2 includes a grinding frame 13, a transmission mechanism, and a drive motor 14.

[0021] The grinding frame 13 is also welded from structural steel, forming an overall frame structure. The left and right sides of the grinding frame 13 are mounted on the machine body 1 via parallelogram mechanisms 15. Due to the motion characteristics of the parallelogram mechanisms 15, the grinding frame 13 can be raised and lowered in a horizontal position.

[0022] The transmission mechanism is mounted on the grinding frame 13 and has an even number of input shafts 16 and an even number of output shafts 17, with a grinding disc 10 mounted at the bottom of each output shaft 17. Preferably, there are four output shafts 17 and four grinding discs 10, evenly distributed around the center of the grinding frame 13. The function of the transmission mechanism is to drive the multiple grinding discs 10 to rotate synchronously, while reducing the rotational speed of the grinding discs 10 by means of the transmission ratio, thereby increasing the power torque. The purpose of setting an even number of grinding discs 10 is to enable their symmetrical distribution, and the transmission mechanism causes two symmetrical grinding discs 10 to rotate in opposite directions, thereby canceling out the torque of the two grinding discs 10, making it easier to control compared to an odd number of grinding discs 10.

[0023] The drive motor 14 is mounted on the grinding frame 13 and connected to the input shaft 16.

[0024] Specifically, the transmission mechanism includes gear transmission sets and belt transmission mechanisms. The number of gear transmission sets is the same as that of the grinding discs 10, thus driving each grinding disc 10 separately. Each gear transmission set has three sequentially meshing gears, which are divided into input gear 18, intermediate gear 19, and output gear 20 according to the power transmission direction. The four gear transmission sets have four input gears 18, mounted on corresponding input shafts 16, and the four input gears 18 mesh sequentially. The output gear 20 of each gear transmission set is mounted on a corresponding output shaft 17, and the intermediate gear 19 is mounted on a corresponding central shaft 21. The input shaft 16, intermediate shaft, and output shaft 17 are all vertically mounted on the grinding frame 13 via bearing seats. The number of teeth on the output gear 20 is greater than the number of teeth on the input gear 18.

[0025] The input pulley 22 of the belt drive mechanism is mounted on the main shaft of the drive motor 14, and the output pulley 23 is coaxially mounted with any gear in one of the gear transmission sets. Preferably, the output pulley 23 is coaxially mounted with one of the intermediate gears 19. The diameter of the input pulley 22 is smaller than the diameter of the output pulley 23. The purpose of the belt drive mechanism is to enable the centrally located drive motor 14 to drive the gear transmission set to rotate.

[0026] Preferably, the barrier 11 includes a barrier base 24 and a barrier body 25. The barrier base 24 is a sheet metal part, fixed to the bottom outer wall of the grinding frame 13. The barrier body 25 is mounted on the barrier base 24, and to form a relatively enclosed grinding space, the barrier body 25 is made of soft woven material. During the grinding process, the barrier body 25 can always hang down and conform to the road surface to prevent dust from escaping. The barrier base 24 has a skirt 26, and the upper edge of the barrier body 25 is fixed to the outer wall of the skirt 26. The skirt 26 is relatively outward, thereby keeping the barrier body 25 away from the grinding disc 10 and preventing it from rolling onto the grinding disc 10 and being damaged. Another advantage of making the barrier body 25 into a soft woven material is that the fine mesh formed by its own weave can absorb some of the dust, which can also play a role in dust suppression.

[0027] The adjusting device 3 is installed on the machine body 1 and drives the grinding device 2 to rise and fall. Specifically, the adjusting device 3 includes two electric push rods, which are symmetrically arranged and connected to the crank 27 of the corresponding parallelogram mechanism 15. The electric push rods work synchronously, driving the grinding device 2 to rise or fall. The electric push rods have good control precision and a self-locking function, which can ensure precise control of the grinding amount and the stability of the grinding device 2. The electric push rods are installed on the rear half of the machine body 1. When they extend, they drive the grinding device 2 to fall, and when they retract, they drive the grinding device 2 to rise. The extension and retraction length of the electric push rods can be determined according to the vertical displacement of the grinding device 2, which is existing technology and will not be described in detail. It should be noted that in this utility model, since the grinding device can be upgraded, it can not only remove road surface deposits, but also further grind the road surface downward to form potholes, thereby facilitating subsequent repair of the damaged areas. The maximum descent distance of the grinding device 2 is controlled by the adjusting device 3.

[0028] A water tank 4 is mounted on the machine body 1 and supplies water to the atomizing nozzles 12 via a water pump 28. The water pump 28 is mounted on the grinding frame 13 and connected to each atomizing nozzle 12 via a pipe 29. Preferably, multiple atomizing nozzles 12 are arranged on the horizontal section at the top of the skirt 26 and are evenly distributed circumferentially. The atomizing nozzles 12 can spray extremely fine droplets, thereby better combining with dust and achieving dust suppression. Compared with the traditional method of directly spraying water, this reduces water consumption and improves the ability to operate continuously.

[0029] In use, move the grinder to the designated location, then start the drive motor 14 to begin grinding the grinding disc 10. At this point, adjust the grinding disc 10 to a low speed. Then, control the adjusting device 3 to slowly lower the grinding device 2 until the grinding disc 10 begins grinding road protrusions. Gradually adjust the lowering distance of the grinding device 2 according to the grinding progress until all protrusions are removed. During grinding, the water pump 28 continuously supplies water and generates water mist through the atomizing nozzle 12, adsorbing and combining dust into droplets, thereby reducing dust emissions. Simultaneously, due to the small initial grinding volume, dust and noise levels are well controlled. The operator can completely remove road protrusions by manipulating the handle 7 to move the grinder back and forth, avoiding any blind spots.

[0030] It should be noted that this grinder can be powered by its own power supply or by an external power source. The electrical control system of the grinder is a conventional system and is not part of the structural improvement of this utility model, therefore it will not be described in detail.

[0031] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0032] It should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A low-dust grinder for road maintenance, characterized by: include: The machine body (1) is equipped with fixed casters (5), movable casters (6) and a handle (7) for controlling the movable casters (6). Grinding device (2), the grinding device (2) is installed on the machine body (1), and a grinding disc (10), a barrier (11) surrounding the grinding disc (10) and an atomizing nozzle (12) installed inside the barrier (11) are installed at the bottom of the grinding device (2). When the grinding device (2) is in the grinding posture, the bottom of the barrier (11) is always in contact with the ground. Adjustment device (3), which is installed on the machine body (1) and drives the grinding device (2) to rise and fall; Water tank (4), which is installed on the body (1) and supplies water to the atomizing nozzle (12) by water pump (28).

2. The low-dust grinder for road maintenance according to claim 1, characterized in that: The polishing device (2) includes: Grinding frame (13), which is mounted on the machine body (1) by a parallelogram mechanism (15); The transmission mechanism is mounted on the grinding frame (13) and has an even number of input shafts (16) and an even number of output shafts (17), with the grinding disc (10) mounted at the bottom of each output shaft (17). A drive motor (14) is mounted on the grinding frame (13) and connected to the input shaft (16).

3. The low-dust grinder for road maintenance according to claim 2, characterized in that: The transmission mechanism includes: The gear transmission group is provided in an even number, each gear transmission group has at least two gears that mesh in sequence, the input gears (18) of all gear transmission groups mesh in sequence, and their output gears (20) are mounted on the corresponding output shafts (17); The belt drive mechanism has an input pulley (22) mounted on the main shaft of the drive motor (14) and an output pulley (23) coaxially mounted with any gear in one of the gear transmission groups.

4. The low-dust grinder for road maintenance according to claim 2, characterized in that: The enclosure (11) includes: Enclosure seat (24), said enclosure seat (24) is installed on the bottom outer wall of said grinding frame (13); The fence body (25) is mounted on the fence seat (24) and is made of soft woven material.

5. The low-dust grinder for road maintenance according to claim 4, characterized in that: The enclosure seat (24) has a skirt (26), and the upper edge of the enclosure body (25) is fixed to the outer wall of the skirt (26).

6. The low-dust grinder for road maintenance according to claim 5, characterized in that: Multiple atomizing nozzles (12) are provided on the horizontal section at the top of the skirt (26).

7. The low-dust grinder for road maintenance according to claim 2, characterized in that: The adjusting device (3) includes two electric actuators, which are symmetrically arranged and connected to the crank (27) of the parallelogram mechanism (15).

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