A road side milling device for highway reconstruction and expansion

Abstract

The application relates to a road edge milling device for highway reconstruction and expansion, and relates to the technical field of highway milling devices, which comprises a long-axis milling drum, a turnover frame and a short-axis milling drum. The turnover frame has a first working position for making the short-axis milling drum and the long-axis milling drum have the same axis and a second working position for making the axis of the short-axis milling drum and the axis of the long-axis milling drum be perpendicular to each other. The long-axis milling drum further has a hollow adsorption channel with two open ends. The application designs a combined and separated milling mechanism, so that the road edge can be milled on the basis of meeting the existing plane milling demand, and the milling mechanism is especially suitable for the engineering scene of road reconstruction and expansion. In addition, in the road edge milling mode, the hollow adsorption channel of the long-axis milling drum can further collect the dust generated by the road edge milling, and the functional integration of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of highway milling device, in particular to a road edge milling device for highway reconstruction and expansion. BACKGROUND

[0002] The pavement milling machine is the core equipment in modern road maintenance and reconstruction construction, and its main function is to accurately peel and crush the old pavement layer through the high-speed rotating milling drum and the hard alloy cutter installed thereon. The core advantage of the equipment lies in its high efficiency, accuracy and environmental protection: it can quickly remove large areas of diseased pavement to provide an ideal base for subsequent paving; by accurately controlling the milling depth and slope, the pavement flatness and drainage performance are effectively restored; and it is widely used in road reconstruction projects.

[0003] The milling drum disclosed in the prior art with publication number "CN202766963U" and the pavement milling machine comprising the milling drum. The milling drum comprises a milling drum body, a first milling cutter and a second milling cutter located at both ends of the milling drum body and spirally extending along the axial direction of the milling drum body, and a main material throwing mechanism arranged between the first milling cutter and the second milling cutter. The milling drum further comprises an auxiliary material throwing mechanism arranged on the outer side wall of the milling drum body and located adjacent to the main material throwing mechanism and close to the outer side of the cutter holder of the material center surface. The device can effectively improve the material throwing effect of the milling drum.

[0004] However, the above-mentioned device still has obvious defects in the process of use: the above-mentioned device and the milling drum disclosed in the prior art are designed for milling operation on the surface of the road. However, in the reconstruction and expansion project of the highway or ordinary road, the road edge of the original road also needs to be milled, so as to facilitate the full combination of the materials laid in the later stage and the widening, thereby ensuring the connection quality of the joint position in the road reconstruction and expansion project. For the milling operation of this specific position, there is no targeted milling device in the prior art, and manual milling operation is often required, which increases the labor burden and makes it difficult to ensure the efficiency and quality of the milling, thereby affecting the quality of the subsequent reconstruction and expansion project. SUMMARY

[0005] Therefore, it is necessary to provide a road edge milling device for highway reconstruction and expansion in view of the deficiencies of the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A road edge milling device for highway reconstruction and expansion, comprising:

[0008] A long-axis milling drum is arranged on the rack in a shaft rotation manner.

[0009] a rotating shaft, and a short-axis milling drum mounted on the rotating frame in a rotating manner around its own axis, the rotating frame having a first working position in which the short-axis milling drum is in the same axis as the long-axis milling drum, and a second working position in which the axis of the short-axis milling drum is perpendicular to the axis of the long-axis milling drum, wherein

[0010] the long-axis milling drum further has a hollow suction channel with openings at both ends, the opening on the side away from the short-axis milling drum being in communication with a dust collecting device;

[0011] when the rotating frame is in the first working position, the end faces of the short-axis milling drum and the long-axis milling drum abut to form a planar milling mode in which the short-axis milling drum blocks the opening on the side close to the long-axis milling drum;

[0012] when the rotating frame is in the second working position, the short-axis milling drum is separated from the end face of the long-axis milling drum, so that the opening on the side close to the short-axis milling drum of the hollow suction channel is opened, and the short-axis milling drum is in a road edge milling mode in which the hollow suction channel of the long-axis milling drum serves as a dust collecting channel during the milling of the short-axis milling drum.

[0013]

[0014] Preferably, the end face on the side of the short-axis milling drum abutting the long-axis milling drum is provided with a plum-blossom-shaped protruding abutting block, and the long-axis milling drum is correspondingly provided with a plum-blossom-shaped abutting groove.

[0015] Preferably, the short-axis milling drum is telescopically mounted on the rotating frame, and a telescopic flower stem is fixedly mounted on the end of the short-axis milling drum away from the plum-blossom-shaped protruding abutting block, the telescopic flower stem telescopically cooperates with the power output sleeve of the bevel gear motor, and the bevel gear motor is fixedly mounted on the rotating frame, thereby providing power for the rotation of the short-axis milling drum.

[0016] Preferably, an extrusion spring is further provided between the rotating frame and the short-axis milling drum, the extrusion spring pushes the short-axis milling drum to slide towards the side close to the bevel gear motor under the action of no external force, a abutting positioning sleeve is further fixedly mounted on the side of the telescopic flower stem away from the short-axis milling drum, a pair of hydraulic positioning push rods are fixedly mounted on the frame, and a positioning block is rotatably arranged on the telescopic arm of the hydraulic positioning push rod, when the hydraulic positioning push rod is extended, the positioning block on the telescopic arm is engaged with the groove of the abutting positioning sleeve, thereby limiting the axial movement of the short-axis milling drum and achieving axis locking.

[0017] ​Preferably, a worm motor is also fixedly installed on the rack, the rotating shaft of the turnover frame is fixedly inserted on the power output sleeve of the worm motor, and the turnover frame is driven to rotate by the rotation of the worm motor.

[0018] Preferably, a diesel engine is also fixedly installed on the rack, the diesel engine is connected with the transmission belt pulley fixedly installed on the outer side of the long-shaft milling drum through a transmission belt, and the diesel engine provides rotating power for the long-shaft milling drum.

[0019] Preferably, a negative pressure adsorption rod is also fixedly installed on the rack near the side of the long-shaft milling drum, the negative pressure adsorption rod is communicated with the dust collecting device, so that the dust generated in the plane milling mode is adsorbed and collected.

[0020] Preferably, the dust collecting device comprises a negative pressure fan and a dust collecting box, both of which are fixedly installed on the rack, the negative pressure fan is fixedly connected with the power output shaft on the other side of the diesel engine, so that the rotation of the negative pressure fan is powered by the diesel engine, the negative pressure fan is communicated with the dust collecting box through a pipeline, the dust collecting box is communicated with the negative pressure adsorption rod through a first dust collecting pipe and communicated with the hollow adsorption channel in the long-shaft milling drum through a second dust collecting pipe.

[0021] Preferably, the dust collecting box is divided into a first collecting cabin and a second collecting cabin which are not communicated with each other by a partition plate, the first dust collecting pipe is communicated with the first collecting cabin, and the second dust collecting pipe is communicated with the second collecting cabin.

[0022] Preferably, the first collecting cabin and the second collecting cabin are respectively communicated with two reversing holes which are arranged perpendicularly on the same fixed disc through flexible dust collecting pipes, the fixed disc cooperates with a movable turntable which is fixedly installed on the rotating shaft protruding from the worm motor, L-shaped reversing airways which are movably cooperated with the two reversing holes are arranged on the movable turntable, so that the L-shaped reversing airways are respectively cooperated with different reversing holes when the turnover frame is in the first working position or the second working position, and a main air inlet pipe is also fixedly installed on the shaft sleeve at the shaft center of the movable turntable, the main air inlet pipe is communicated with the air inlet of the negative pressure fan.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] The application designs a combined and separated milling mechanism, which specifically comprises a long-axis milling drum and a short-axis milling drum, wherein the short-axis milling drum is provided with a radial overturning movement, so that it has a plane milling mode and a road edge milling mode, so as to perform milling operation on the road edge on the basis of meeting the existing plane milling demand, and is especially suitable for the engineering scene of road reconstruction and expansion, and in addition, in the road edge milling mode, the hollow adsorption channel of the long-axis milling drum can further collect the dust generated by the road edge milling, and greatly improves the functional integration of the device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view of the overall structure of the application;

[0026] Figure 2 It is a bottom view of the overall structure of the application;

[0027] Figure 3 It is a schematic view of the transmission structure of the application;

[0028] Figure 4 It is a schematic view of the L-shaped reversing airway communication state in the plane milling mode;

[0029] Figure 5 It is a schematic view of the L-shaped reversing airway communication state in the road edge milling mode;

[0030] Figure 6 It is a schematic view of the shaft connecting structure of the application;

[0031] Figure 7 It is a schematic view of the internal structure of the first collection cabin of the application;

[0032] Figure 8 It is a schematic view of the mounting structure of the short-axis milling drum of the application.

[0033] In the figure: 1 long-axis milling drum, 2 short-axis milling drum, 3 overturning frame, 4 rack, 5 rotating shaft, 6 hollow adsorption channel, 7 plum-blossom-shaped protruding butt joint block, 8 plum-blossom-shaped butt joint groove, 9 telescopic flower pole, 10 helical gear motor, 11 extrusion spring, 12 abutting positioning sleeve, 13 hydraulic positioning push rod, 14 positioning block, 15 worm motor, 16 diesel engine, 17 transmission belt, 18 transmission belt pulley, 19 negative pressure adsorption rod, 20 negative pressure fan, 21 dust collection box, 22 first dust collection pipe, 23 second dust collection pipe, 24 partition plate, 25 first collection cabin, 26 second collection cabin, 27 flexible dust collection pipe, 28 fixed disc, 29 reversing hole, 30 movable turntable, 31 L-shaped reversing airway, 32 main air inlet pipe. DETAILED DESCRIPTION

[0034] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the use of the terms "include", "comprise" or "contain" herein should not be understood as limiting the present application to the features or steps described herein, but rather the use of these terms is intended to cover the presence of the features or steps described herein as well as the presence of other features or steps not described herein.

[0035] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0037] In the present application, unless otherwise explicitly specified and limited, if the terms "mount", "connect", "connect", "fix" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, if there is a description such as "on" or "under" or the like of a first feature to a second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0039] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0040] Please refer to Figures 1-8 The present application provides technical solutions:

[0041] Embodiment I:

[0042] A road edge milling device for highway reconstruction and expansion, comprising:

[0043] A long-axis milling drum 1 is fixedly and rotationally arranged on a rack 4;

[0044] A turnover frame 3 is fixedly and rotationally connected to the rack 4 through a rotating shaft 5; and

[0045] A short-axis milling drum 2 is installed on the turnover frame 3 in a manner of rotating around its own axis, the turnover frame 3 has a first working position in which the short-axis milling drum 2 and the long-axis milling drum 1 are on the same axis, and a second working position in which the axis of the short-axis milling drum 2 is perpendicular to the axis of the long-axis milling drum 1; wherein

[0046] The long-axis milling drum 1 further has a hollow suction channel 6 with openings at both ends, the opening on the side away from the short-axis milling drum 2 is in communication with a dust collecting device;

[0047] When the turnover frame 3 is in the first working position, the end faces of the short-axis milling drum 2 and the long-axis milling drum 1 abut to form a planar milling mode in which the movement states are synchronized, at this time the short-axis milling drum 2 blocks the opening on the side close to the hollow suction channel 6;

[0048] When the turnover frame 3 is in the second working position, the short-axis milling drum 2 is disengaged from the end face of the long-axis milling drum 1, so that the opening of the hollow suction channel 6 near the side of the short-axis milling drum 2 is opened, at this time, the short-axis milling drum 2 is in the road edge milling mode alone, and in this mode, the hollow suction channel 6 of the long-axis milling drum 1 serves as a dust collection channel during the milling process of the short-axis milling drum 2.

[0049] In this embodiment, the short-axis milling drum 2 is installed on the turnover frame 3, and the turnover frame 3 and the long-axis milling drum 1 are installed on the rack 4, wherein the long-axis milling drum 1 is assembled with the rack 4 through a rotary support, and the turnover frame 3 is assembled and connected with the rotary support arranged on the rack 4 through a rotating shaft, so as to support the long-axis milling drum 1 and the turnover frame 3, and the rotation process is driven by the worm motor 15 installed on the rack 4. The worm motor 15 is selected as the turnover mechanism of the turnover frame 3 because the worm motor 15 is matched with a worm through a worm gear, so as to have a reverse self-locking feature, which is conducive to the locking operation of the turnover frame 3. The turnover frame 3 can rotate at a preset angle of 0°-90° and is locked and positioned at both ends of the rotation, so as to have a first working position in which the short-axis milling drum 2 and the long-axis milling drum 1 are on the same axis, and a second working position in which the axis of the short-axis milling drum 2 is perpendicular to the axis of the long-axis milling drum 1. Figure 4 As shown in the drawings, in this state, the short-axis milling drum 2 and the long-axis milling drum 1 form a combined milling drum that is longer than the long-axis milling drum 1, which is similar to the milling drum structure in the prior art and is used for milling the road surface. The short-axis milling drum 2 and the long-axis milling drum 1 are both provided with milling tools in the prior art, and the milling tools are arranged in irregular or linear arrays or in a spiral array, so as to fully mill the road surface. Meanwhile, the turnover frame 3 has a second working position in which the axis of the short-axis milling drum 2 is perpendicular to the axis of the long-axis milling drum 1. Figure 5In this state, the short-axis milling drum 2 is separated from the long-axis milling drum 1, and the axis of the short-axis milling drum 2 is perpendicular to the road surface. By abutting the vertical surface on one side of the short-axis milling drum 2 against the road edge, and through the rotary motion of the short-axis milling drum 2, the road edge is milled. This milling state is used in highway or ordinary road reconstruction projects, which requires milling the original road edge to have a vertical and rough outer edge surface, facilitating better combination with the subsequent expanded road edge. In this process, the long-axis milling drum 1 does not work. Therefore, the rack 4 is installed on the milling machine by a hydraulic lifting device. The height of the rack 4 from the ground can be adjusted by the hydraulic lifting device. On the one hand, the milling depth of the road surface can be adjusted. On the other hand, in the road edge milling mode, the height of the rack 4 is raised to set the long-axis milling drum 1 and the milling tools installed thereon away from the ground. At the same time, the short-axis milling drum 2 can work independently, so a set of driving mechanism is needed to match it. Specifically, a bevel gear motor 10 is fixedly installed on the turnover frame 3. A telescopic flower rod 9 is telescopically inserted into the power output sleeve of the bevel gear motor 10. The telescopic flower rod 9 is fixedly connected with the short-axis milling drum 2, so as to drive the short-axis milling drum 2 to work through the bevel gear motor 10, and then perform the milling operation of the road edge. The bevel gear motor 10 is powered by the energy storage motor fixedly installed on the rack 4.

[0050] At the same time, the long-axis milling drum 1 also has a hollow suction channel 6 with two open ends. Referring to the description of the drawings Figure 6 In the road edge milling mode, the short-axis milling drum 2 is arranged perpendicular to the axis of the long-axis milling drum 1. At this time, the short-axis milling drum 2 is separated from the long-axis milling drum 1, and the opening on one side of the long-axis milling drum 1 close to the short-axis milling drum 2 is opened. The opening is just adjacent to the milling position of the short-axis milling drum 2. Therefore, through the setting of the hollow suction channel 6, the collection of dust in the road edge milling process can be accurately performed. Further, by setting a dust collection device at the opening away from the short-axis milling drum 2 side of the hollow suction channel 6, the dust collection operation is smoothly performed. In summary, the long-axis milling drum 1 and the short-axis milling drum 2 can be combined or separated, thereby forming two working modes to meet the needs of plane road and road edge milling. The long-axis milling drum 1 is further used as a dust recovery channel in the road edge milling process, which widens the use scene of the device and integrates the functional characteristics of the device.

[0051] Example two:

[0052] The end face of the short-axis milling drum 2 on the side abutting with the long-axis milling drum 1 is provided with a plum-blossom-shaped protruding abutting block 7, and a plum-blossom-shaped abutting groove 8 is correspondingly provided on the long-axis milling drum 1.

[0053] The extrusion spring 11 is sleeved between the turnover frame 3 and the short shaft milling drum 2, and pushes the short shaft milling drum 2 to slide to the side close to the bevel gear motor 10 under the action of no external force. The telescopic flower rod 9 is fixedly installed on the side away from the short shaft milling drum 2 and is provided with an abutting positioning sleeve 12. The rack 4 is fixedly installed with a pair of hydraulic positioning push rods 13. The telescopic arm of the hydraulic positioning push rod 13 is provided with a positioning block 14. When the hydraulic positioning push rod 13 is extended, the positioning block 14 on the telescopic arm is clamped with the groove of the abutting positioning sleeve 12, so as to limit the axial movement of the short shaft milling drum 2 and realize the axial locking.

[0054] The rack 4 is further fixedly installed with a diesel engine 16. The diesel engine 16 is connected with a transmission belt pulley 18 fixedly installed on the outer side of the long shaft milling drum 1 through a transmission belt 17. The rotation of the diesel engine 16 provides the long shaft milling drum 1 with rotating power.

[0055] In this embodiment, since the short shaft milling drum 2 and the long shaft milling drum 1 need to be connected and separated, in order to ensure the stability of the connection, the short shaft milling drum 2 is provided with a plum-blossom-shaped protruding connecting block 7. Correspondingly, the long shaft milling drum 1 is provided with a plum-blossom-shaped connecting groove 8. In the connection process, the two are closely connected in the end face, so as to ensure the stability in the connection process. Therefore, in the connected state, the plum-blossom-shaped protruding connecting block 7 also serves as the closing mechanism of the hollow suction channel 6 of the long shaft milling drum 1. At this time, the hollow suction channel 6 does not need to work. Since in this combined state, a large range of milling operation is needed on the road surface, in order to further fix the diesel engine 16 on the rack 4, refer to the description of the diesel engine 16 in the first embodiment, and the diesel engine 16 can provide power to meet the road milling. Figure 1 and 2 The diesel engine 16 can provide power to meet the road milling. This is also the common power form of the existing milling device. Since the short shaft milling drum 2 and the long shaft milling drum 1 also need to be separated, the short shaft milling drum 2 is provided with a telescopic structure, which is convenient for connection, separation and smooth turnover movement. Therefore, the extrusion spring 11 is sleeved between the turnover frame 3 and the short shaft milling drum 2. The extrusion spring 11 pushes the short shaft milling drum 2 to slide to the side close to the bevel gear motor 10 under the action of no external force. In order to further ensure the axial stability of the short shaft milling drum 2, when the turnover frame 3 is in the first working position and the second working position, the hydraulic positioning push rod 13 provided on the rack 4 is clamped with the groove, so as to further limit the short shaft milling drum 2, and then realize the axial locking operation of the short shaft milling drum 2, so as to ensure the smooth operation of the plane milling mode and the road edge milling mode.

[0056] Embodiment three:

[0057] The bottom of the rack 4 is also fixedly installed with a negative pressure suction rod 19 near one side of the long shaft milling drum 1, the negative pressure suction rod 19 is communicated with the dust collecting device, so as to adsorb and collect the dust generated in the process of the planar milling mode.

[0058] The dust collecting device comprises a negative pressure fan 20 and a dust collecting box 21, both of which are fixedly installed on the rack 4, the negative pressure fan 20 is fixedly connected with the power output shaft on the other side of the diesel engine 16, so as to provide power for the rotation of the negative pressure fan 20 through the diesel engine 16, the negative pressure fan 20 is communicated with the dust collecting box 21 through a pipeline, the dust collecting box 21 is communicated with the negative pressure suction rod 19 through a first dust collecting pipe 22 and communicated with the hollow adsorption channel 6 in the long shaft milling drum 1 through a second dust collecting pipe 23.

[0059] In this embodiment, a negative pressure suction rod 19 is further installed at the bottom of the rack 4, the negative pressure suction rod 19 is provided with adsorption holes arranged at equal intervals on the side facing the long shaft milling drum 1, the dust generated in the planar milling mode can be adsorbed through the negative pressure suction rod 19, so that effective adsorption of dust can be realized in both working modes, and it is further disclosed that the dust collecting device comprises a negative pressure fan 20 and a dust collecting box 21, referring to the description of the drawings Figure 1 , the negative pressure fan 20 is fixedly connected with the power output shaft on the other side of the diesel engine 16, so as to provide power for the adsorption of dust through the diesel engine 16, the dust collecting box 21 is communicated with the negative pressure suction rod 19 and the hollow adsorption channel 6 through the first dust collecting pipe 22 and the second dust collecting pipe 23 respectively, wherein the side communicated with the hollow adsorption channel 6 is connected with the long shaft milling drum 1 through a sealing bearing, so as to be stably connected with the second dust collecting pipe 23 in the process of high-speed rotation of the long shaft milling drum 1, the negative pressure fan 20 draws gas out of the dust collecting box 21, so as to collect the dust in the negative pressure suction rod 19 and the hollow adsorption channel 6 into the dust collecting box 21 through the first dust collecting pipe 22 and the second dust collecting pipe 23 respectively, thereby completing the collection operation of the dust.

[0060] Embodiment four:

[0061] The dust collecting box 21 is divided into a first collecting cabin 25 and a second collecting cabin 26 which are not communicated with each other by a partition plate 24, the first dust collecting pipe 22 is communicated with the first collecting cabin 25, and the second dust collecting pipe 23 is communicated with the second collecting cabin 26.

[0062] The first collecting cabin 25 and the second collecting cabin 26 are respectively communicated with two reversing holes 29 arranged perpendicularly on the same fixed disc 28 through flexible dust collecting pipes 27, the fixed disc 28 cooperates with a movable disc 30 fixedly installed on the rotating shaft 5 of the turnover frame 3 protruding the worm motor 15, the movable disc 30 is provided with L-shaped reversing air passages 31 movably cooperating with the two reversing holes 29, so that the L-shaped reversing air passages 31 respectively cooperate with different reversing holes 29 when the turnover frame 3 is in the first working position or the second working position, and the movable disc 30 is further fixedly installed with a main air inlet pipe 32 at the shaft center through a shaft sleeve, the main air inlet pipe 32 is communicated with the air inlet of the negative pressure fan 20.

[0063] In the embodiment, the dust collecting box 21 is further divided into the first collecting cabin 25 and the second collecting cabin 26 by the partition plate 24, and the first dust collecting pipe 22 and the second dust collecting pipe 23 are respectively communicated with the corresponding cabin, referring to the drawings Figure 7 , and the first collecting cabin 25 and the second collecting cabin 26 are further communicated with the two reversing holes 29 arranged perpendicularly on the same fixed disc 28 through different flexible dust collecting pipes 27, the fixed disc 28 cooperates with the movable disc 30, referring to the drawings Figure 4 , and 5 During the turnover of the turnover frame 3, the rotating shaft 5 is driven to rotate, since the rotating shaft 5 and the movable disc 30 are fixedly connected, the rotation of the movable disc 30 will make the L-shaped reversing air passages 31 respectively cooperate with different reversing holes 29, this setting is to guide the wind direction more intelligently, for example, in the planar milling mode, the L-shaped reversing air passages 31 of the movable disc 30 are communicated with the flexible dust collecting pipe 27 connected with the first collecting cabin 25, at this time, the operation of the negative pressure fan 20 can only perform negative pressure adsorption on the negative pressure adsorption rod 19, and similarly, in the road milling mode, the operation of the negative pressure fan 20 can only perform gas adsorption on the hollow adsorption passage 6 of the long-axis milling drum 1, thereby making the gas adsorption more concentrated, ensuring the effective collection of dust, and the above-mentioned device can automatically switch the adsorption position according to the turning angle of the turnover frame 3 without intervention.

[0064] The above-mentioned embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it cannot be understood as limiting the patent application scope. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A road edge milling device for highway reconstruction and expansion, characterized by, The utility model relates to a long axis milling drum (1) is rotatably arranged on the frame (4), a turnover frame (3) is rotatably connected on the frame (4) through the pivot (5), and a short axis milling drum (2) is rotatably installed on the turnover frame (3) and has the first working position of the short axis milling drum (2) with the long axis milling drum (1) in the same axis and the second working position of the axis of the short axis milling drum (2) with the long axis milling drum (1) axis perpendicular to each other. The long axis milling drum (1) further has the hollow suction passage (6) with both ends open, and the opening of the hollow suction passage (6) away from the side of the short axis milling drum (2) is communicated with the dust collecting device. When the turnover frame (3) is in the first working position, the short axis milling drum (2) and the end face of the long axis milling drum (1) are abutted to form the plane milling mode of synchronous motion, and the opening of the hollow suction passage (6) near the side of the short axis milling drum (2) is blocked. When the turnover frame (3) is in the second working position, the short axis milling drum (2) is separated from the end face of the long axis milling drum (1), so that the opening of the hollow suction passage (6) near the side of the short axis milling drum (2) is opened, and the short axis milling drum (2) is in the road edge milling mode alone, and in the mode, the hollow suction passage (6) of the long axis milling drum (1) serves as the dust collecting passage in the milling process of the short axis milling drum (2). The end face of the short axis milling drum (2) abutting the long axis milling drum (1) is provided with the plum-blossom-shaped protruding abutting block (7), and the long axis milling drum (1) is correspondingly provided with the plum-blossom-shaped abutting groove (8). The short axis milling drum (2) is telescopically installed on the turnover frame (3), the end of the short axis milling drum (2) away from the plum-blossom-shaped protruding abutting block (7) is fixedly installed with the telescopic flower rod (9), the telescopic flower rod (9) is telescopically matched with the power output sleeve of the bevel gear motor (10), the bevel gear motor (10) is fixedly installed on the turnover frame (3), so as to provide power for the rotation of the short axis milling drum (2). The turnover frame (3) and the short axis milling drum (2) are further sleeved with the extrusion spring (11), the extrusion spring (11) pushes the short axis milling drum (2) to slide to the side close to the bevel gear motor (10) under the action of no external force, the side of the telescopic flower rod (9) away from the short axis milling drum (2) is further fixedly installed with the abutting positioning sleeve (12), a pair of hydraulic positioning push rods (13) are fixedly installed on the frame (4), the positioning block (14) is rotatably arranged on the telescopic arm of the hydraulic positioning push rod (13), when the hydraulic positioning push rod (13) is extended, the positioning block (14) on the telescopic arm is clamped with the groove of the abutting positioning sleeve (12), so as to limit the axial movement of the short axis milling drum (2) and realize the axis locking.

2. The road edge milling device for highway reconstruction and expansion according to claim 1, characterized in that: ​ 3. The road edge milling device for highway reconstruction and expansion according to claim 2, characterized in that: ​ 4. The road edge milling device for highway reconstruction and expansion according to claim 3, characterized in that: ​ 5. The road milling device for highway reconstruction and expansion according to claim 4, characterized in that: A worm motor (15) is also fixedly installed on the frame (4). The rotating shaft (5) of the tilting frame (3) is fixedly inserted into the power output sleeve of the worm motor (15). The rotation of the worm motor (15) drives the tilting frame (3) to perform fixed-axis rotation.

6. The road side milling device for highway reconstruction and extension according to claim 5, characterized in that: A diesel engine (16) is also fixedly installed on the frame (4). The diesel engine (16) is connected to the transmission pulley (18) fixedly installed on the outside of the long shaft milling drum (1) via the transmission belt (17). The rotation of the diesel engine (16) provides rotational power to the long shaft milling drum (1).

7. The road side milling device for highway reconstruction and extension according to claim 6, characterized in that: A negative pressure adsorption rod (19) is also fixedly installed on the bottom of the frame (4) near the long shaft milling drum (1). The negative pressure adsorption rod (19) is connected to the dust collection device, so as to adsorb and collect the dust generated during the planar milling process.

8. The road milling device according to claim 7, characterized in that: The dust collection device includes a negative pressure fan (20) and a dust collection box (21). Both the negative pressure fan (20) and the dust collection box (21) are fixedly installed on the frame (4). The negative pressure fan (20) is fixedly connected to the power output shaft on the other side of the diesel engine (16), so that the diesel engine (16) provides power for the rotation of the negative pressure fan (20). The negative pressure fan (20) is connected to the dust collection box (21) through a pipe. The dust collection box (21) is connected to the negative pressure adsorption rod (19) through the first dust collection pipe (22) and to the hollow adsorption channel (6) opened in the long shaft milling drum (1) through the second dust collection pipe (23).

9. The road milling device for highway reconstruction and expansion according to claim 8, characterized in that: The dust collection box (21) is divided into a first collection chamber (25) and a second collection chamber (26) that are not connected to each other by a partition (24). The first dust collection pipe (22) is connected to the first collection chamber (25), and the second dust collection pipe (23) is connected to the second collection chamber (26).

10. The road milling device for reconstruction and extension of expressway according to claim 9, characterized in that: The first collection chamber (25) and the second collection chamber (26) are respectively connected to two reversing holes (29) perpendicularly arranged on the same fixed plate (28) through flexible dust collection pipe (27). The fixed plate (28) cooperates with the movable turntable (30). The movable turntable (30) is fixedly installed on the rotating shaft (5) of the worm motor (15) protruding from the tilting frame (3). The movable turntable (30) is provided with an L-shaped reversing air passage (31) that is movably cooperated with the two reversing holes (29). When the tilting frame (3) is in the first working position or the second working position, the L-shaped reversing air passage (31) cooperates with different reversing holes (29). The main air inlet pipe (32) is also fixedly installed at the axis of the movable turntable (30) through a bushing. The main air inlet pipe (32) is connected to the air inlet of the negative pressure fan (20).

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