Milling drum regulation and control mechanism of pavement milling machine

Abstract

The utility model discloses a milling drum regulation and control mechanism of a pavement milling machine. A milling drum is installed in the middle of a cavity of the rack, the lifting assembly is arranged at the top of the cavity of the rack, the output end of the lifting assembly is fixedly connected to the milling drum, the stabilizing assembly is arranged on the upper portion of the cavity of the rack and hinged to the lifting assembly, and the emergency brake assembly is installed on the inner side wall of the rack. And the emergency brake assembly is provided with a key which is embedded and clamped with a key groove formed in the outer wall of the milling drum. The lifting assembly pulls or pushes the milling drum so as to adjust the milling drum to fall to the ground, the stability of the milling drum is ensured by the stabilizing assembly with the triangular structure, so that the milling drum can be quickly and stably lifted in the working process so as to adapt to different construction requirements and road surface conditions, the problem of poor lifting regulation and control stability of the milling drum is solved, and the working efficiency is improved. And the emergency brake assembly can quickly stop the rotation of the milling drum, so that the starting and ending points of milling are accurately controlled, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling drums, in particular to a milling drum regulating mechanism of a road milling machine. Background Art

[0002] Milling machine is an important mechanical equipment used in road construction and maintenance, mainly used to remove the old road surface layer to prepare for new paving work. The core component of the milling machine is the milling drum, a rotating drum equipped with multiple cutting blades, which is used to cut and remove road surface materials.

[0003] However, existing milling drum control mechanisms on the market have defects in certain aspects. Milling drum control mechanisms usually lack flexibility and precision, especially when dealing with complex road conditions. For example, when working on uneven or steep roads, the milling drum that is raised and lowered by hydraulic control alone may not be able to remain stable, resulting in inconsistent milling depths and even damage to the road structure. This lack of flexibility and precision not only reduces the efficiency of milling operations, but also increases the difficulty of operation, thereby affecting the progress and quality of the entire road construction project.

[0004] Therefore, a road milling machine milling drum regulating mechanism is needed to solve the above technical defects. Utility Model Content

[0005] In order to solve the problems in the background technology, the utility model provides a milling drum control mechanism for a road milling machine. The control mechanism not only enables the milling drum to rise and fall quickly and smoothly during operation to adapt to different construction requirements and road conditions, but also controls the emergency brake of the milling drum to deal with emergencies and reduce the risk of accidents, and also effectively removes debris and dust on the milling drum by regulating the lifting and swinging of the cleaning component.

[0006] The technical solution adopted by the utility model is:

[0007] The milling drum regulating mechanism includes a frame, a lifting assembly, a stabilizing assembly and an emergency brake assembly;

[0008] A chamber is provided inside the frame, a milling drum is installed in the middle of the chamber, the lifting assembly is provided at the top of the chamber of the frame, the output end of the lifting assembly is fixedly connected to the milling drum, and is used to control the up and down lifting of the milling drum, the stabilizing assembly is provided at the upper part of the chamber of the frame, and is hinged to the lifting assembly, the emergency brake assembly is installed on the inner wall of the frame, and the emergency brake assembly is provided with an emergency brake key for engaging with a key slot provided on the outer wall of the milling drum, thereby quickly stopping the rotation of the milling drum.

[0009] The lifting assembly includes a lifting cylinder, a hydraulic rod and a connecting seat;

[0010] The lifting cylinder is installed in a cylinder groove opened at the top of the chamber of the frame, the output end of the lifting cylinder is arranged vertically downward and coaxially connected with a hydraulic rod, the hydraulic rod extends into the chamber of the frame in a vertical downward direction, the bottom end of the hydraulic rod is fixedly connected with a connecting seat, and the bottom of the connecting seat is equipped with the milling drum;

[0011] The stabilizing component is hinged to the connecting seat.

[0012] The stabilizing assembly includes a guide rod, two slide blocks and two articulated frames;

[0013] The guide rod is horizontally fixed to the upper part of the chamber of the frame, and is located between the lifting cylinder and the milling drum. The outer peripheral sliding sleeve of the guide rod is provided with two sliders, and the two sliders are equidistant from the center of the guide rod. The bottoms of the two sliders are hinged with articulated frames, and the bottom ends of the two sliders are respectively hinged to the upper ends of the two articulated frames, and the lower ends of the two articulated frames are jointly hinged to the connecting seat. The guide rod between the two sliders and the two articulated frames form an isosceles triangle structure.

[0014] The emergency brake assembly comprises an emergency brake disc, a connecting rod, a cylinder and an emergency brake key;

[0015] The cylinder is fixed to the inner wall of the frame, and the output shaft of the cylinder is parallel to the axial arrangement of the milling drum. The output shaft of the cylinder is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to one end face of the emergency brake disc. The other end face of the emergency brake disc faces the milling drum and is arranged along the axial direction of the milling drum. The milling drum is provided with a plurality of groups of key grooves circumferentially spaced along its own axial direction and close to one end face of the emergency brake disc. The number of the key grooves corresponds to the number of emergency brake keys circumferentially spaced on the other end face of the emergency brake disc for connecting and cooperating with the key grooves.

[0016] The regulating mechanism also includes a servo motor, a lifting frame, a servo motor, a rotating frame and a cleaning wire roller;

[0017] The servo motor is installed on the other inner wall of the frame opposite to the emergency brake assembly, the output shaft of the servo motor is vertically and fixedly connected with a threaded rod, the outer side of the threaded rod is threadedly connected with a threaded block, the threaded block is fixedly connected with a lifting frame on the side close to the milling drum, the bottom of the lifting frame is equipped with a servo motor, the output shaft direction of the servo motor is parallel to the axial direction of the milling drum, the output shaft of the servo motor is fixedly inserted in the upper part of the rotating frame, the lower part of the rotating frame is movably sleeved with a cleaning wire roller, the cleaning wire roller is arranged close to the milling drum, and the axial direction of the cleaning wire roller is arranged parallel to the axial direction of the milling drum.

[0018] The width of the cleaning wire roller is greater than the width of the milling drum.

[0019] The beneficial effects of the utility model are:

[0020] 1. Two sets of articulated frames articulate the angle change of the triangular structure and stabilize the position of the milling drum. When dealing with uneven or sloping roads, the lifting cylinder and the tripod structure can ensure that the milling drum remains stable, so that the milling drum can be raised and lowered quickly and smoothly during the working process, thus adapting to different construction needs and road conditions;

[0021] 2. The emergency brake assembly can quickly stop the rotation of the milling drum, thereby accurately controlling the start and end points of milling. The milling machine can stop accurately when approaching key areas such as curbs and drainage ditches, increasing the safety of operation;

[0022] 3. Effectively remove the debris and dust on the milling drum, which not only keeps the equipment clean and maintained, but also ensures the performance and service life of the milling drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model.

[0024] Figure 2 It is a side structural schematic diagram of the emergency brake disc of the utility model.

[0025] Figure 3 It is a front view structural schematic diagram of the milling drum of the utility model.

[0026] Figure 4 It is a schematic diagram of the side structure of the cleaning wire roller of the utility model.

[0027] In the figure: 1. frame; 2. guide rod; 3. slide block; 4. cylinder groove; 5. lifting cylinder; 6. hydraulic rod; 7. articulated frame; 8. servo motor; 9. threaded rod; 10. threaded block; 11. lifting frame; 12. servo motor; 13. rotating frame; 14. cleaning wire roller; 15. milling drum; 16. emergency brake disc; 17. connecting rod; 18. cylinder; 19. connecting seat; 20. emergency brake key; 21. keyway. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1 As shown, the milling drum regulating mechanism includes a lifting component, a stabilizing component, an emergency brake component and a frame 1. A chamber is opened inside the frame 1, and a milling drum 15 is installed in the middle of the chamber. The lifting component is arranged at the top of the chamber of the frame 1, and the output end of the lifting component is fixedly connected to the milling drum 15 for controlling the up and down lifting of the milling drum 15. The stabilizing component is arranged at the upper part of the chamber of the frame 1 and is hinged to the lifting component. The emergency brake component is installed on the inner wall of the frame 1. The emergency brake component is provided with an emergency brake key 20 for engaging with a key slot 21 provided on the outer wall of the milling drum 15, thereby quickly stopping the rotation of the milling drum 15.

[0030] The lifting assembly includes a lifting cylinder 5, a hydraulic rod 6 and a connecting seat 19; the lifting cylinder 5 is installed in a cylinder groove 4 opened at the top of the chamber of the frame 1, and the output end of the lifting cylinder 5 is coaxially connected to the hydraulic rod 6, and the hydraulic rod 6 extends into the chamber of the frame 1 in a vertical downward direction. The bottom end of the hydraulic rod 6 is fixedly connected to the connecting seat 19, and the bottom of the connecting seat 19 is equipped with a milling drum 15.

[0031] The stabilizing assembly includes a guide rod 2, two sliders 3 and two articulated frames 7; the guide rod 2 is horizontally fixed to the upper part of the chamber of the frame 1, and is located between the lifting cylinder 5 and the milling drum 15. The outer peripheral sliding sleeve of the guide rod 2 is provided with two sliders 3, and the two sliders 3 are equidistant from the center of the guide rod 2. The bottom ends of the two sliders 3 are respectively hinged to the upper ends of the two articulated frames 7, and the lower ends of the two articulated frames 7 are jointly hinged to the connecting seat 19. The guide rod 2 and the two articulated frames 7 between the two sliders 3 form an isosceles triangle structure.

[0032] Specifically, the height position of the milling drum 15 is adjusted by the lifting cylinder 5, and the lifting cylinder 5 drives the hydraulic rod 6 to extend or retract, thereby pulling or pushing the milling drum 15, adjusting and controlling the landing of the milling drum 15, and in the process of pulling or pushing the milling drum 15, the two sets of articulated frames 7 are articulated to realize the angle change of the triangular structure, thereby stabilizing the position of the milling drum 15. When dealing with uneven or sloping roads, the lifting cylinder 5 and the tripod structure can ensure that the milling drum 15 remains stable, so that the milling drum 15 can be lifted and lowered quickly and smoothly during operation.

[0033] like Figure 2 and Figure 3 As shown, the emergency brake assembly includes an emergency brake disc 16, a connecting rod 17, a cylinder 18 and an emergency brake key 20; the cylinder 18 is fixed to the inner wall of the frame 1, and the output shaft of the cylinder 18 is arranged parallel to the axial direction of the milling drum 15, the output shaft of the cylinder 18 is fixedly connected to one end of the connecting rod 17, and the other end of the connecting rod 17 is fixedly connected to one end face of the emergency brake disc 16, the other end face of the emergency brake disc 16 faces the milling drum 15 and is arranged along the axial direction of the milling drum 15, and the milling drum 15 is axially arranged with a plurality of groups of key grooves 21 at circumferential intervals on one end face close to the emergency brake disc 16, and the number of the key grooves 21 corresponds to the number of the emergency brake keys 20 distributed circumferentially at intervals on the other end face of the emergency brake disc 16.

[0034] Specifically, when it is necessary to stop the milling drum operation, the cylinder 18 is started, and the output shaft of the cylinder 18 drives the connecting rod to move, thereby pulling the emergency brake disc 16 close to the milling drum 15, so that the emergency brake key 20 on the end face of the emergency brake disc 16 is engaged with the key slot 21, and the rotation of the milling drum 15 is quickly stopped, thereby accurately controlling the starting and ending points of the milling, and the milling machine can stop accurately when approaching key areas such as curbs and drainage ditches.

[0035] The regulating mechanism also includes a servo motor 8, a lifting frame 11, a servo motor 12, a rotating frame 13 and a cleaning wire roller 14;

[0036] The servo motor 8 is mounted on the other inner side wall of the frame 1 opposite to the emergency brake assembly. The output shaft of the servo motor 8 is vertically and fixedly connected with a threaded rod 9. The outer side of the threaded rod 9 is threadedly connected with a threaded block 10. The threaded block 10 is fixedly connected with a lifting frame 11 on one side close to the milling drum 15. The bottom of the lifting frame 11 is equipped with a servo motor 12. Figure 4 As shown, the output shaft direction of the servo motor 12 is parallel to the axial direction of the milling drum 15, and the output shaft of the servo motor 12 is fixedly inserted in the upper part of the rotating frame 13. The lower part of the rotating frame 13 is movably sleeved with a cleaning wire roller 14, and the cleaning wire roller 14 is arranged close to the milling drum 15, and the axial direction of the cleaning wire roller 14 is arranged parallel to the axial direction of the milling drum 15; the width of the cleaning wire roller 14 is greater than the width of the milling drum 15.

[0037] Specifically, after the milling operation is completed, the driver can operate the cleaning mechanism to thoroughly clean the milling drum 15. At startup, the servo motor 8 drives the threaded rod 9 to rotate, driving the threaded block 10 to descend, and the servo motor 12 drives the rotating frame 13 to swing and adjust the position, so that the cleaning wire roller 14 fits the milling drum 15, effectively removing debris and dust on the milling drum 15.

Claims

1. A milling drum control mechanism for a road milling machine, Features: It comprises a frame (1), a lifting component, a stabilizing component and an emergency brake component; A chamber is provided inside the frame (1), a milling drum (15) is installed in the middle of the chamber, the lifting component is arranged at the top of the chamber of the frame (1), the output end of the lifting component is fixedly connected to the milling drum (15), the stabilizing component is arranged at the upper part of the chamber of the frame (1) and is hinged to the lifting component, the emergency brake component is installed on the inner wall of the frame (1), and the emergency brake component is provided with an emergency brake key (20) for engaging with a key slot (21) provided on the outer wall of the milling drum (15).

2. A milling drum control mechanism according to claim 1, Features: The lifting assembly comprises a lifting cylinder (5), a hydraulic rod (6) and a connecting seat (19); The lifting cylinder (5) is installed in a cylinder groove (4) opened at the top of the chamber of the frame (1); the output end of the lifting cylinder (5) is arranged vertically downward and is coaxially connected with a hydraulic rod (6); the hydraulic rod (6) extends vertically downward into the chamber of the frame (1); the bottom end of the hydraulic rod (6) is fixedly connected with a connecting seat (19); the bottom of the connecting seat (19) is equipped with the milling drum (15); The stabilizing component is hinged to the connecting seat (19).

3. A milling drum control mechanism according to claim 2, Features: The stabilizing assembly comprises a guide rod (2), two slide blocks (3) and two articulated frames (7); The guide rod (2) is horizontally fixed to the upper part of the chamber of the frame (1) and is located between the lifting cylinder (5) and the milling drum (15). The outer peripheral sliding sleeve of the guide rod (2) is provided with two sliders (3). The two sliders (3) are equidistant from the center of the guide rod (2). The bottoms of the two sliders (3) are hinged with hinged frames (7). The bottom ends of the two sliders (3) are respectively hinged to the upper ends of the two hinged frames (7), and the lower ends of the two hinged frames (7) are jointly hinged to the connecting seat (19).

4. A milling drum control mechanism according to claim 2, Features: The emergency brake assembly comprises an emergency brake disc (16), a connecting rod (17), a cylinder (18) and an emergency brake key (20); The cylinder (18) is fixed to the inner wall of the frame (1), and the output shaft of the cylinder (18) is arranged parallel to the axial direction of the milling drum (15). The output shaft of the cylinder (18) is fixedly connected to one end of a connecting rod (17), and the other end of the connecting rod (17) is fixedly connected to one end face of an emergency brake disc (16). The other end face of the emergency brake disc (16) faces the milling drum (15) and is arranged along the axial direction of the milling drum (15). The milling drum (15) is provided with a plurality of groups of key grooves (21) at circumferential intervals along its own axial direction and close to one end face of the emergency brake disc (16). The number of the key grooves (21) corresponds to the number of emergency brake keys (20) distributed circumferentially on the other end face of the emergency brake disc (16) for connecting and cooperating with the key grooves (21).

5. A milling drum control mechanism according to claim 1, Features: The regulating mechanism further comprises a servo motor (8), a lifting frame (11), a servo motor (12), a rotating frame (13) and a cleaning wire roller (14); The servo motor (8) is mounted on the other inner side wall of the frame (1) opposite to the emergency brake assembly. The output shaft of the servo motor (8) is vertically and fixedly connected to a threaded rod (9). The outer side of the threaded rod (9) is threadedly connected to a threaded block (10). The threaded block (10) is fixedly connected to a lifting frame (11) on the side close to the milling drum (15). A servo motor (12) is mounted at the bottom of the lifting frame (11). The output shaft direction of the servo motor (12) is parallel to the axial direction of the milling drum (15). The output shaft of the servo motor (12) is fixedly inserted in the upper part of the rotating frame (13). The lower part of the rotating frame (13) is movably sleeved with a cleaning wire roller (14). The cleaning wire roller (14) is arranged close to the milling drum (15).

6. A milling drum control mechanism according to claim 5, Features: The width of the cleaning wire roller (14) is greater than the width of the milling drum (15).

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