A new type of hand-held hydraulic self-walking dust-removing spray milling machine
By introducing a hydraulic self-propelled system and a spray cooling and dust removal device onto the milling machine, the problems of operator fatigue and dust were solved, and the operational safety and flexibility of the equipment were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU XIANXING MASCH TECH CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-24
AI Technical Summary
Existing small milling machines require operators to push and pull the equipment during use, which increases fatigue and risk, and lacks effective dust removal measures.
It adopts a hydraulic control system to achieve self-propelled function, is equipped with a spray cooling and dust removal system to reduce the burden on operators, and is powered by a hydraulic pump and generator, combined with a hand handle to improve operational flexibility.
It reduces the labor intensity of operators, improves the flexibility and safety of equipment, and effectively reduces dust emissions, thus improving the operating environment.
Smart Images
Figure CN224548919U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of municipal engineering road maintenance equipment, specifically a new type of hand-operated hydraulic self-propelled dust removal spray milling machine. Background Technology
[0002] Currently, the most economical method for road maintenance is to first mill the damaged old road surface layer and then lay a new road surface layer. The equipment used for this work is a milling machine. Depending on the different alloy cutter heads, the milling machine can be used for milling, roughening, and other work on asphalt or cement (concrete) roads.
[0003] Then, existing small milling machines are driven by electric motors, gasoline, or diesel engines. During use, the small milling machine needs to be pushed or pulled backward by the operator. With prolonged operation, the operator will become fatigued as the working time increases. As the operator's fatigue increases, the risk of accidents during operation increases. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a novel hand-held hydraulic self-propelled dust-removing spray milling machine. It has the advantages of using water spray cooling for dust removal, facilitating the use of the milling machine, and improving the flexibility of the milling machine in actual use, thus solving the problems mentioned in the background technology.
[0005] This utility model provides the following technical solution: A novel hand-held hydraulic self-propelled dust-removing spray milling machine, comprising a milling head and a machine body. A milling drum is installed inside the milling head. An engine is fixedly installed at the upper end of the milling head, and a power unit is fixedly installed on the milling head. The machine body is connected to the rear end plate of the milling head. The machine body contains a hydraulic oil pump, a generator, a hydraulic oil tank, a filler port, a radiator motor, an oil tank radiator, a storage battery, a water pump, a hydraulic cylinder, a hydraulic distribution valve, a flow control valve, oil pipes, and water pipes. A throttle cable is installed on the engine. The generator is electrically connected to the storage battery. The engine is sequentially connected to the power unit via an oil pump pulley, a generator pulley, and a hydraulic pump drive belt. The machine includes an output pulley, generator, hydraulic pump, milling drum, and a tensioner with a drive pulley. A handle is fixedly mounted on the top of the machine body via a handle fixing component, and an instrument panel is mounted on the handle. A traveling chassis is fixedly mounted on the lower end of the machine body. A left travel motor and a right travel motor are respectively mounted on both sides of the traveling chassis. A right drive wheel and a left drive wheel are respectively mounted on the left and right travel motors. The traveling chassis is fixed to the milling machine via a pin shaft and a chassis-milling machine connector. The power output pulley and the drive pulley are connected by a milling drum drive belt. Adjustment structures are installed on both the hydraulic pump drive belt and the milling drum drive belt. The milling machine is equipped with a spray cooling system.
[0006] Preferably, a main shaft bearing housing is installed on both sides of the milling machine, and a main shaft bearing is installed in the bearing housing. A driven shaft bearing housing assembly is installed on one side of the milling machine, and a drive shaft bearing housing assembly is installed on the other side of the milling machine. Wear-resistant slippers are fixedly installed on both sides of the milling machine. A guide wheel bracket is fixedly connected to the end of the wear-resistant slipper away from the right drive wheel. A guide support wheel is rotatably connected to the outer wall of the guide wheel bracket. The spray cooling system includes a water tank, a water pump, a water spray boom, a water pipe fixing clamp, and a water spray nozzle. A dust removal connection pipe is installed on the left side of the milling machine. The milling machine is externally equipped with a dust removal fan or vacuum cleaner. The hydraulic pump drive belt and the milling drum drive belt are respectively equipped with a first belt protection cover and a second belt protection cover. The second belt protection cover is installed on the milling machine through a protection cover fixing component. The upper and lower ends of the hydraulic cylinder are movably connected to the machine body through a cylinder-to-machine body connection component and a cylinder-to-chassis connection component, respectively. The adjustment structure includes a tension wheel movable bracket, a tension wheel, a fixing block, a spring, an adjusting rod, an adjusting cable, and an adjusting nut. A lighting lamp is fixedly installed on one side of the machine body, and a throttle control handle is provided at the upper end of the machine body.
[0007] Preferably, the upper surface of the instrument panel is equipped with an operating handle, an instrument, a start button, several switches, a tension wheel, and a clutch handle.
[0008] Preferably, the operating handle includes a high / low speed control handle, a lifting control handle, a left drive motor control handle, and a right drive control handle. The high / low speed control handle and the lifting control handle are located between the tension wheel clutch handle and the instrument, and the left drive motor control handle and the right drive control handle are located outside the start button.
[0009] Preferably, the power unit includes a gasoline engine, a diesel engine, or an electric motor, and the engine can be replaced with a 220V or 380V power motor as needed.
[0010] Preferably, the milling drum is configured as a roller milling drum, with auxiliary plates installed on both sides of the roller, and a drive spindle installed between the two auxiliary plates by welding. Several helical fixed bases are welded to the outside of the roller, and alloy bullet-shaped milling cutter heads are installed on the fixed bases.
[0011] Preferably, in another type, the milling drum is welded with a drive spindle via several sub-plates, and several shafts are evenly mounted on the sub-plates, with sheet-shaped polygonal milling cutters strung on the shafts.
[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a hydraulic control valve to supply power from the hydraulic pump to the machine's cylinders for lifting and lowering, as well as the travel motor. The hydraulic distribution valve controls the steering. When turning left, the left hydraulic motor stops supplying oil or slows down the oil supply, while the right hydraulic motor drives the machine to turn, thus facilitating the movement of the milling machine and reducing the workload of the operator when pushing the milling machine.
[0013] This utility model uses a fixed component welded to the milling machine and a fixed component welded to the chassis. At the same time, the chassis is fixed to the milling machine by a pin, so that the chassis can move up and down to facilitate the adjustment of the wheel height and achieve the construction depth of the milling drum during milling. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the instrument panel of this utility model; Figure 3 This is a schematic diagram of the tensioner wheel of this utility model; Figure 4 This is a schematic diagram of the belt protective cover of this utility model; Figure 5 This is a schematic diagram of the milling drum of this utility model; Figure 6 This is a schematic diagram of the connection between the hydraulic cylinder and the machine body of this utility model.
[0015] In the diagram: 1. Milling machine; 2. Machine body; 3-1. Hand handle fixing piece; 3-2. Handle; 4-1. Right drive wheel; 4-2. Left drive wheel; 5. Milling drum; 6. Guide support roller; 7. Wear-resistant slipper; 8. Guide wheel bracket; 9. Engine; 10. Drive shaft bearing housing assembly; 11. Driven shaft bearing housing assembly; 12. Drive pulley; 13. Power output pulley; 14. Tensioner movable bracket; 15. Tensioner; 6. Fixing block; 17. Spring; 18. Adjusting rod; 18-1. Adjusting cable; 19. Adjusting nut; 20-1. Hydraulic pump drive belt; 20-2. Milling drum drive belt; 21-1. Oil pump pulley; 21-2. Generator pulley; 22. Hydraulic oil pump; 23. Generator; 24. Lighting lamp; 25-1. Hydraulic oil tank; 25-2. Filler port; 26. Radiator motor; 27. Oil tank radiator; 28-1 28-1 Left travel motor; 28-2 Right travel motor; 29 Battery; 30 Water pump; 31 Hydraulic cylinder; 31-1 Cylinder-chassis connection; 31-2 Cylinder-body connection; 32-1 Chassis-milling machine connection; 32-2 Pin; 33 Travel chassis; 34 Hydraulic distribution valve; 35 Flow control valve; 36 Operating handle; 36-1 High / low speed control handle; 36-2 Lifting control handle; 36-3. Left drive motor control handle; 36-4. Right drive control handle; 37. Sprinkler boom; 38. Water pipe fixing clamp; 39. Sprinkler nozzle; 40-1. Belt protection cover; 40-2. Belt protection cover; 41. Protection cover fixing piece; 42. Dust collector connecting pipe; 43. Dust collector fan; 44. Instrument panel; 45. Instrument; 46. Start button; 47. Switch; 48. Throttle control handle; 49. Tensioner clutch handle. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1 , Figure 3 and Figure 5A novel hand-operated hydraulic self-propelled dust-removing spray milling machine includes a milling head 1 and a machine body 2. The milling head 1 has a milling drum 5 installed inside, and an engine 9 is fixedly mounted on the upper end of the milling head 1. A power unit is fixed on the milling head 1. The machine body 2 is connected to the rear end plate of the milling head 1. The machine body 2 contains a hydraulic oil pump 22, a generator 23, a hydraulic oil tank 25-1, an oil filler 25-2, a radiator motor 26, an oil tank radiator 27, a battery 29, a water pump 30, a hydraulic cylinder 31, a hydraulic distribution valve 34, a flow control valve 35, oil pipes, and water pipes. The engine 9 is equipped with a throttle cable. The hydraulic distribution valve 34 controls the lifting and lowering of the machine's cylinders. The lifting cylinders connect the machine body 2 and the traveling chassis 33. The upper is equipped with a left travel motor 28-1 and a right travel motor 28-2. The left travel motor 28-1 and the right travel motor 28-2 are connected to the right drive wheel 4-1 and the left drive wheel 4-2, respectively. The height of the traveling chassis 33 is controlled by the extension and retraction of the hydraulic cylinder 31 to adjust the depth of milling or roughening. The generator 23 is electrically connected to the battery 29. The engine 9 is connected to the power output pulley 13, generator 23, hydraulic oil pump 22, and milling drum 5 in sequence through the oil pump pulley 21-1, generator pulley 21-2, and hydraulic pump drive belt 20-1. The engine 9 serves as the main power source and is controlled by the throttle cable to drive the oil pump pulley 21-1 and generator pulley 21-2 through the triangular hydraulic pump drive belt 20-1. The engine 9 transmits power to the hydraulic pump 22, generator 23, and milling drum 5. Alternatively, an electric motor can be installed. Simultaneously, the engine 9's belt drives the hydraulic pump pulley 21-1 and generator pulley 21-2, which in turn drive the generator 23 to charge the battery 29. The battery 29 provides power to the entire machine for engine starting, headlights, warning lights, instrument panel 44, solenoid valves, etc. The engine 9's belt drive pulley transmits power to the hydraulic pump 22, which in turn, through a hydraulic control valve, provides power to the machine's cylinders for lifting and travel motors. A drive pulley 12 is mounted on the tensioner 15. A handle 3-2 is fixedly mounted on the top of the machine body 2 via a handle fixing piece 3-1, and the instrument panel 44 is mounted on the handle 3-2. A traveling chassis 33 is fixedly mounted on the lower end of the machine body 2. A folding bracket can also be installed on the traveling chassis, and casters are installed under the bracket. A water bucket can be placed there when continuous cooling and dust removal are required. The bracket can be folded when not in use. A left traveling motor 28-1 and a right traveling motor 28-2 are respectively installed on the two sides of the traveling chassis 33. A right drive wheel 4-1 and a left drive wheel 4-2 are respectively installed on the left traveling motor 28-1 and the right traveling motor 28-2. The equipment is hydraulically differentially steered, which is controlled by a hydraulic distribution valve 34. When turning left, the left traveling motor 28-1 stops supplying oil or slows down the oil supply, and the right traveling motor 28-2 drives the equipment to turn. The same principle applies to turning right.The traveling chassis 33 is fixed to the milling machine 1 via pin 32-2 and chassis-milling machine connector 32-1. The engine 9 drives the hydraulic oil pump 22, which draws oil from the oil tank and delivers it to the flow control valve 35. The flow control valve 35 then connects to the control handle, which in turn connects to the left travel motor 28-1 and the right travel motor 28-2. The left and right travel motors 28-1 and 28-2 are respectively connected to the right drive wheel 4-1 and the left drive wheel 4-2. The travel motors 28-1 and 28-2 drive the right and left drive wheels 4-1 and 4-2, respectively, enabling automatic movement. The flow control valve 35 adjusts the flow rate to control the speed of the left and right travel motors 28-1 and 28-2, achieving high and low speed movement. The control handle operates the hydraulic distribution valve 34 to control the forward and reverse rotation of the left and right travel motors 28-1 and 28-2, achieving forward and backward movement. The flow control valve 35 controls the flow rate of the left and right travel motors 28-1 and 28-2. The rotation or stop of the left travel motor 28-1 and the right travel motor 28-2 is controlled to achieve the steering of the equipment. The power output pulley 13 and the drive pulley 12 are connected by the milling drum drive belt 20-2. The hydraulic pump drive belt 20-1 and the milling drum drive belt 20-2 are both equipped with adjustment structures. The drive pulley 12 of the engine 9 is connected to the input end of the main shaft pulley of the milling drum 5 via a connecting belt. The speed is adjusted by the input and output of the pulley. The output end is connected to the drive pulley 12 of the milling drum 5, so that the milling drum 5 can perform cutting or roughening work on asphalt or concrete pavement at a suitable speed. In order to prevent the common problem of belt stretching after long-term use, all hydraulic pump drive belts 20-1 and milling drum drive belts 20-2 are designed with belt tensioning pulleys 15. The appropriate drive length of the belt is adjusted by adjusting the belt tensioning pulleys 15. The milling machine 1 is equipped with a spray cooling system. This equipment can be operated manually, or the hydraulic control system can be replaced with an electro-hydraulic control system for remote control. This maximizes the operator's ability to observe the work environment, ensuring greater comfort and safety.
[0018] The milling machine 1 has main spindle bearing seats installed on both sides, with main spindle bearings installed inside the bearing seats. The main spindle of the milling drum 5 is fixed to the frame of the milling machine 1 by the bearings and rotates for cutting by the drive belt at the drive end. A driven shaft bearing seat assembly 11 is installed on one side of the milling machine 1, and a drive shaft bearing seat assembly 10 is installed on the other side of the milling machine 1. Wear-resistant slippers 7 are fixedly installed on both sides of the milling machine 1. A guide wheel bracket 8 is fixedly connected to the end of the wear-resistant slipper 7 away from the right drive wheel 4-1. A guide support roller 6 is rotatably connected to the outer wall of the guide wheel bracket 8. The spray cooling system includes a storage tank. The milling machine 1 is equipped with a water tank, water pump, water spray boom 37, water pipe clamp 38, and water nozzle 39. A dust removal connection pipe 42 is installed on the left side of the milling machine 1. A dust removal fan 43 or vacuum cleaner is also installed on the milling machine 1. Because the milling drum 5 generates heat through friction between the milling cutter head and the workpiece during cutting, the temperature of the milling drum 5 can rise over time. Therefore, the milling machine 1 is equipped with a spray cooling system. A water tank is installed on the equipment, and the water is pumped and piped to the water spray boom 37 to cool the milling drum 5, which also serves to remove dust. A dust removal connection pipe 42 is installed on the left side of the milling machine 1. 2. When working in an enclosed space, a dust removal fan 43 or a vacuum cleaner can be added or connected to minimize dust during operation. The dust removal fan 43 can be an electric fan or directly driven by the engine 9 via belt drive to rotate the fan for dust removal. The hydraulic pump drive belt 20-1 and the milling drum drive belt 20-2 are respectively equipped with a first belt protection cover 40-2 and a second belt protection cover 40-1. The second belt protection cover 40-1 is mounted on the milling machine 1 via a protection cover fixing piece 41. The upper and lower ends of the hydraulic cylinder 31 are respectively connected to the machine body via the cylinder. Connector 31-2 and cylinder-chassis connector 31-1 are movably connected to the machine body 2. The lifting of the cylinder can be controlled by the lifting handle or by the screw crank. A depth scale is installed on the side of the machine body 2 to visually observe the working depth. In addition, all drive belts are covered with protective covers for added safety. The adjustment structure includes a tension wheel movable bracket 14, tension wheel 15, fixing block 16, spring 17, adjusting rod 18, adjusting cable and adjusting nut 19. A lighting lamp 24 is fixedly installed on one side of the machine body 2. A throttle control handle 48 is installed at the upper end of the machine body 2.
[0019] Please see Figure 2 and Figure 6 The upper surface of the instrument panel 44 is equipped with an operating handle 36, an instrument 45, a start button 46, several switches 47, a tension wheel clutch handle 49.
[0020] The operating handle 36 includes a high / low speed control handle 36-1, a lifting control handle 36-2, a left drive motor control handle 36-3, and a right drive control handle 36-4. The high / low speed control handle 36-1 and the lifting control handle 36-2 are located between the tension wheel clutch handle 49 and the instrument 45, while the left drive motor control handle 36-3 and the right drive control handle 36-4 are located outside the start button 46.
[0021] The power unit includes a gasoline engine, a diesel engine, or an electric motor. Engine 9 can be replaced with a 220V or 380V electric motor as needed. When engine 9 is replaced with an electric motor, the electric motor is powered independently by an external power cable, while the operation of other transmission connections remains unchanged, for use in certain special scenarios, such as indoor environments or environments with high exhaust emission requirements.
[0022] Please see Figure 4 and Figure 6 One type of milling drum 5 is configured as a roller-type milling drum. Sub-plates are installed on both sides of the drum, and a drive spindle is welded between the two sub-plates. Several helical fixed bases are welded to the outside of the drum, and alloy bullet-shaped milling cutter heads are mounted on the fixed bases. The milling drum 5 adopts a roller-type design, with specially designed cutter holders welded to the drum body. The helical distribution and arrangement of the cutter holders are precisely calculated to maximize cutting efficiency and the service life of the milling cutter heads. The milling drum shaft has a drive end and a driven end, which are fixed to the milling machine 1 frame by bearings. The driven end has a sealing cover, and the seal completely covers the bearing to prevent dust from entering and reducing bearing life. The drive end passes through the bearing and is equipped with a pulley. A bearing protective cover and seals are also installed at the bearing location.
[0023] To extend the service life of the milling machine 1, wear-resistant strips are installed on the bottom of the side plates on both sides of the milling machine 1 to increase the wear resistance of the side plates and extend their service life. Depending on different construction environments and cutting objects, it is necessary to replace or select appropriate alloy milling cutter heads periodically. The front end and side plates of the milling machine 1 are designed to be movable, and the front plate can be removed by screws to replace the milling cutter head.
[0024] Another type of milling drum 5 has a drive spindle welded to several sub-plates. Several shafts are evenly mounted on the sub-plates, and each shaft is equipped with a blade-shaped polygonal milling cutter. Another simple milling drum consists of several sub-plates welded to the drive spindle, and then several shafts are evenly mounted on the sub-plates, with blade-shaped polygonal milling cutters strung on each shaft. This simple milling drum is only suitable for roughening.
[0025] Working principle: When using: After the engine 9 starts, the hydraulic oil pump 22 and generator 23 are driven by belt. The hydraulic oil pump 22 is driven by belt, and the hydraulic oil is delivered from the hydraulic cylinder 31 through pipeline to the hydraulic oil pump 22. Then, the hydraulic oil is delivered through pipeline to the hydraulic distribution valve 34 and the flow control valve 35. Finally, through these operating valves, the hydraulic oil is distributed to the lifting cylinder and the travel motor through pipeline, which can realize the functions of walking, steering, chassis lifting and other functions. The generator 23 charges the battery 29 with the power output from the belt on the engine 9, so that the oil tank radiator 27 can work, reduce the temperature of the hydraulic oil, and make the hydraulic pressure more stable. The battery 29 provides power to the water pump. When the water pump works, it delivers water from the water tank to the spray nozzle, which cools the milling drum and reduces dust. The battery 29 provides power to the dust removal fan 43, so that the dust removal fan 43 rotates and draws the dust out of the milling chamber and into the dust collector bag. The water tank and the dust collector bag can be installed.
[0026] When the engine 9 starts, it also outputs power to the milling drum 5. By tightening the tension pulley with the handle or installing the transmission clutch, the power output can control the rotation of the milling drum 5. The milling drive belt is taut when working and slack when not working.
[0027] After tightening the clutch or tensioner 15, the milling drum 5 enters the working state. Then, operate the lifting handle to adjust the milling machine 1 to the appropriate working depth via the lifting cylinder. Next, open the operating handle 36 and select the appropriate travel speed to begin work. Steering can be achieved using the steering handle. Forward and reverse movements can also be controlled by the handle.
[0028] The equipment can be equipped with a water tank and a dust collection bag. The milling drum with 5 outputs can be equipped with a speed reducer or clutch. The milling drum can be converted to chain drive. The lifting cylinder can be manually lifted using a screw structure.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A novel hand-held hydraulic self-propelled dust-removing spray milling machine, comprising a milling head (1) and a machine body (2), wherein a milling drum (5) is installed inside the milling head (1), an engine (9) is fixedly installed at the upper end of the milling head (1), a power unit is fixedly installed on the milling head (1), the machine body (2) is connected to the rear end plate of the milling head (1), and a hydraulic oil pump (22), a generator (23), a hydraulic oil tank (25-1), an oil filler (25-2), and a radiator motor (25-2) are installed inside the machine body (2). 6) Fuel tank radiator (27), storage battery (29), water pump (30), hydraulic cylinder (31), hydraulic distribution valve (34), flow control valve (35), oil pipe, water pipe. The engine (9) is equipped with a throttle cable. The generator (23) is electrically connected to the storage battery (29). The engine (9) is connected to the power output pulley (13), generator (23), and hydraulic pump drive belt (20-1) in sequence through the oil pump pulley (21-1), generator pulley (21-2), and hydraulic pump drive belt (20-1). The oil pump (22), milling drum (5), and tensioner (15) are equipped with drive pulleys (12). A handle (3-2) is fixedly installed on the upper part of the machine body (2) via a handle fixing piece (3-1), and an instrument panel (44) is installed on the handle (3-2). A walking chassis (33) is fixedly installed at the lower end of the machine body (2). A left walking motor (28-1) and a right walking motor (28-2) are respectively installed on both sides of the walking chassis (33). The left walking motor (28-1) and the right walking motor (28-2) are respectively installed on both sides of the walking chassis (33). The right drive wheel (4-1) and the left drive wheel (4-2) are respectively installed on the 28-2. The walking chassis (33) is fixed on the milling machine (1) through the pin (32-2) and the chassis and milling machine connector (32-1). The power output pulley (13) and the drive pulley (12) are connected through the milling drum drive belt (20-2). The hydraulic pump drive belt (20-1) and the milling drum drive belt (20-2) are both equipped with adjustment structures. The milling machine (1) is equipped with a spray cooling system.
2. The novel hand-operated hydraulic self-propelled dust-removing spray milling machine according to claim 1, characterized in that: The milling machine (1) is equipped with main shaft bearing seats on both sides, and a main shaft bearing is installed in the bearing seats. A driven shaft bearing seat assembly (11) is installed on one side of the milling machine (1), and a drive shaft bearing seat assembly (10) is installed on the other side of the milling machine (1). Wear-resistant slippers (7) are fixedly installed on both sides of the milling machine (1). A guide wheel bracket (8) is fixedly connected to the end of the wear-resistant slipper (7) away from the right drive wheel (4-1). A guide support wheel (6) is rotatably connected to the outer wall of the guide wheel bracket (8). The spray cooling system includes a water tank, a water pump, a water spray bar (37), a water pipe fixing clamp (38), and a water spray nozzle (39). A dust removal connecting pipe (42) is installed on the left side of the milling machine (1). A dust removal fan (43) or a vacuum cleaner is externally mounted on the milling machine (1). The hydraulic pump drive belt (20-1) and the milling drum drive belt (20-2) are respectively equipped with a first belt protection cover (40-2) and a second belt protection cover (40-1). The second belt protection cover (40-1) is installed on the milling machine (1) through the protection cover fixing part (41). The upper and lower ends of the hydraulic cylinder (31) are respectively connected to the machine body (2) through the cylinder-machine body connecting part (31-2) and the cylinder-chassis connecting part (31-1). The adjustment structure includes a tension wheel movable bracket (14), a tension wheel (15), a fixing block (16), a spring (17), an adjustment rod (18), an adjustment cable and an adjustment nut (19). A lighting lamp (24) is fixedly installed on one side of the machine body (2). A throttle control handle (48) is provided at the upper end of the machine body (2).
3. The novel hand-held hydraulic self-propelled dust-removing spray milling machine according to claim 1, characterized in that: The upper surface of the instrument panel (44) is equipped with an operating handle (36), an instrument (45), a start button (46), several switches (47), and a tensioner clutch handle (49).
4. A novel hand-operated hydraulic self-propelled dust-removing spray milling machine according to claim 3, characterized in that: The operating handle (36) includes a high and low speed control handle (36-1), a lifting control handle (36-2), a left drive motor control handle (36-3), and a right drive control handle (36-4). The high and low speed control handle (36-1) and the lifting control handle (36-2) are located between the tension wheel clutch handle (49) and the instrument (45). The left drive motor control handle (36-3) and the right drive control handle (36-4) are located outside the start button (46).
5. A novel hand-operated hydraulic self-propelled dust-removing spray milling machine according to claim 1, characterized in that: The power unit includes a gasoline engine, a diesel engine or an electric motor, and the engine (9) can be replaced with a 220V or 380V power motor as needed.
6. A novel hand-operated hydraulic self-propelled dust-removing spray milling machine according to claim 1, characterized in that: One type of milling drum (5) is configured as a roller milling drum, with auxiliary plates installed on both sides of the roller, and a drive spindle installed between the two auxiliary plates by welding. Several spiral fixed bases are welded on the outside of the roller, and alloy bullet-shaped milling cutter heads are installed on the fixed bases.
7. A novel hand-operated hydraulic self-propelled dust-removing spray milling machine according to claim 1, characterized in that: Another type of milling drum (5) has a drive spindle welded to several sub-plates, and several shafts are evenly installed on the sub-plates, with sheet-shaped polygonal milling cutters strung on the shafts.