A material collecting mechanism of a road marking milling machine

Abstract

The utility model provides a kind of material collecting mechanism of road marking milling machine, it is related to material collecting equipment field, including relay unit and material collecting unit, both are separable type connection;Relay unit includes the relay box fixed in rack, the side of relay box towards suction duct is equipped with the inlet for connecting suction duct, the side of relay box towards material collecting unit is equipped with discharge port, discharge port and inlet are connected by pipeline placed in relay box;Material collecting unit includes material collecting box and the air chamber of being set to the top of material collecting box, and it is communicated by filter mechanism between material collecting box and air chamber;Material collecting unit is equipped with the inlet of being communicated with the inner chamber of material collecting box and being adapted with discharge port towards relay box;Material collecting unit further includes that negative pressure fan provides negative pressure suction for suction duct, and its air inlet communicates air chamber air outlet;The utility model aims at solving the problem that the marking hot melt material of milling down is extremely easy to adhere pipe wall using telescopic duct, causes pipe blockage, cannot be retracted after stretching and the problem of poor safety.

Description

Technical Field

[0001] This utility model relates to the field of material receiving equipment technology, specifically to a material receiving mechanism for a road marking milling machine. Background Technology

[0002] In the maintenance of road markings, after vehicles have been driving over them for a long time and frequently, the road markings will become unclear and need to be repainted. Before the markings are repainted, the old road markings need to be milled and removed, which led to the development of road marking milling machines.

[0003] Existing road marking milling machines typically include a milling mechanism and a receiving mechanism. For example, in the applicant's recently filed patent application, "A Road Marking Milling Machine," the milling mechanism transports the milled road marking waste to the receiving mechanism via a negative pressure pipe. However, the material bins accompanying the milling machine have limited capacity and should be promptly loaded onto transport vehicles for transfer to waste disposal stations. However, because transport vehicles are generally tall, and road markings are made of hot melt adhesive, the waste is highly adhesive and easily clumps together. Current lifting and feeding structures such as auger structures, conveyor belt structures, and chain scraper structures are unsuitable for this type of material. Therefore, a receiving mechanism for a road marking milling machine that can accommodate material suction, storage, and high-level discharge is needed.

[0004] In the prior art, patent document CN202247645U discloses an asphalt pavement marking milling machine. Its waste material loading bin has a dust suction pipe at its upper front, with the suction port of the pipe located behind the milling device. A hydraulic cylinder is installed inside the cross-lever type hydraulic lifting support below the waste material loading bin for simultaneously lifting, unloading, and tipping over the waste asphalt material and dust after milling. During unloading, the hydraulic cylinder lifts the waste material loading bin and simultaneously tilts it, automatically dumping the material inside into another transfer and storage vehicle.

[0005] However, existing technologies such as the aforementioned loading hoppers and their lifting mechanisms have the following problems in actual use: 1. The suction pipe is directly connected to the upper front part of the waste loading hopper. As the waste loading hopper is lifted, the connection point between the suction pipe and the suction pipe moves upward. Therefore, the suction pipe must be designed as a telescopic structure, such as its... Figure 1The corrugated pipe structure shown is problematic because, when transporting hot melt adhesive marking material, the material's strong adhesion makes it prone to sticking in the expansion joints of the corrugated pipe. This accumulation of sticky material can lead to blockages and prevent retraction after extension, severely impacting suction operations. Secondly, the waste material hopper is simultaneously lifted and tilted by a hydraulic cylinder. This simultaneous lifting and tilting action can cause the material inside the hopper to tip over during the lifting and tilting process. The accumulation of material at the side-mounted tipping cover of the silo directly causes a lateral shift in the center of gravity of the material, resulting in an extremely high risk of tipping over and extremely poor safety. When the silo is raised to a height that matches the transport vehicle's cargo compartment before unloading through the side door, the material that is at a high position and has accumulated in large quantities at the side door will instantly pour out, and may even spray out of the receiving compartment, making unloading uncontrollable and extremely dangerous, and also causing serious dust problems. At the same time, the transfer of materials with the transport vehicle also occupies two lanes, which is not conducive to the smooth flow of traffic. Utility Model Content

[0006] This utility model provides a material receiving mechanism for a road marking milling machine to address the aforementioned problems in the prior art, thereby solving the issues of poor material suction, high risk of tipping over, uncontrollable unloading, and poor safety.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A material receiving mechanism for a road marking milling machine is set on the frame of the road marking milling machine and connected to the output side of the milling part through a suction pipe. The feature is that it includes a relay part and a material receiving part, which are detachably connected. The relay unit includes a relay box fixed to the frame. The relay box has an inlet for connecting to the suction pipe on the side facing the suction pipe, and an outlet on the side facing the receiving unit. The outlet and the inlet are connected by a pipe placed inside the relay box. The receiving section includes a receiving box and an air chamber located on top of the receiving box, and the receiving box and the air chamber are connected by a filtration mechanism; the receiving section is provided with an inlet facing the relay box, which is connected to the inner cavity of the receiving box and adapted to the discharge port; the receiving section also includes a negative pressure fan that provides negative pressure suction for the suction pipe, and the air inlet of the negative pressure fan is connected to the air outlet of the air chamber; The receiving box is provided with a door at the rear. The receiving box is connected to the frame via a base frame. The base frame is connected to a lifting part for driving its lifting. A tilting drive is connected between the receiving box and the base frame for driving the receiving box to tilt backward relative to the base frame. The lifting part and the tilting drive are independently controlled.

[0008] Furthermore, the lifting unit includes a scissor lift frame and a lifting drive for driving the scissor lift frame to move up and down. One end of the lifting drive is hinged to the frame, and the other end is hinged to the scissor lift frame.

[0009] Furthermore, the scissor lift frame includes a first lifting leg and a second lifting leg, which are connected by a scissor-like hinge in the middle; one end of the first lifting leg is hinged to the frame, and the other end of the first lifting leg is slidably connected to the base frame; one end of the second lifting leg is hinged to the base frame, and the other end of the second lifting leg is slidably connected to the frame.

[0010] Furthermore, the first and second lifting legs are hinged at a preset position in the middle, so that when the scissor lift is raised to the preset position, the rear end of the receiving box extends backward and protrudes outward from the frame.

[0011] Furthermore, the distance from the hinge point between the first and second lifting legs to the bottom end of the first lifting leg is a, and the distance from the hinge point to the bottom end of the second lifting leg is b, where b > a.

[0012] Furthermore, the negative pressure fan is installed inside the relay box. The relay box has an air inlet connected to the air inlet of the negative pressure fan on the side facing the receiving section. The air outlet of the air chamber is located on the side of the receiving section facing the relay box and is adapted to and connected to the air inlet. The relay box also has an opening for the negative pressure fan to discharge air. Alternatively, in other embodiments, the negative pressure fan is fixedly installed outside the receiving section, with the air inlet of the negative pressure fan connected to the air outlet of the air chamber.

[0013] Furthermore, the lifting section also includes a lifting rod, which is a telescopic mechanism fixed on the frame. Its telescopic end abuts against the bottom of the receiving section, and is used to provide assistance for the lifting drive during the initial lifting stage of the scissor lift.

[0014] Furthermore, one end of the tilting drive is hinged to the bottom of the receiving box, and the other end is hinged to the base frame.

[0015] Furthermore, the contact surface between the receiving section and the relay box is a sloping structure, with the inlet and outlet located on the upper front sloping surface of the receiving section, and the outlet and outlet located on the upper rear sloping surface of the relay box.

[0016] Furthermore, the filter mechanism is detachably mounted on a mounting bracket inside the air chamber from the top, the filter body of the filter mechanism extends into the receiving box, the output side of the filter mechanism is connected to the air chamber, and a matching filter backflushing system is provided inside the air chamber and on the top side of the filter mechanism.

[0017] Furthermore, the top of the air chamber is provided with an openable and closable top cover, and the filter backflushing system is fixedly installed on the top cover.

[0018] The beneficial effects of this utility model are: 1. This utility model utilizes an intermediate section connecting the suction pipe and the receiving section. One side of the intermediate section is fixed to the suction pipe, while the other side is detachably and sealed to the receiving section. This allows the material to be received through the suction pipe to the receiving section without affecting the milling process, while the intermediate section can be separated from the receiving section during the discharge process to facilitate lifting of the receiving box and high-level tilting discharge. This design avoids the need for a telescopic suction pipe, thus preventing the easily adhered hot-melt material from the milled markings from the pipe wall, which can lead to blockages and the inability to retract after extension.

[0019] 2. This utility model further enables the receiving box to be lifted to a preset height in sequence when material needs to be discharged, by setting an independently controlled lifting part and tilting drive, and then opening the box door and tilting the box to discharge the material. This avoids the risk of center of gravity shift, side tipping, and material spillage during discharge caused by lifting and tilting at the same time, thus ensuring the controllability and safety of discharge.

[0020] 3. This utility model further features a sloped structure for the contact surface between the receiving section and the relay box. The inlet and outlet are located on the sloped surface at the front upper part of the receiving section, while the outlet and outlet are located on the sloped surface at the rear upper part of the relay box. This ensures that the receiving section automatically detaches from the relay box during the lifting process and smoothly reconnects with the relay box during the descent process. In other words, it ensures that the outlet and inlet automatically seal and connect as the receiving section descends, and the outlet and outlet automatically seal and connect as the receiving section descends. Thus, the four-interface connection and sealing are automatically completed during the descent of the receiving section. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a milling machine according to an embodiment of the present invention; Figure 2 This is a structural schematic diagram of an embodiment of the present invention (lifted state); Figure 3 This is a structural schematic diagram of an embodiment of the present invention (lifted state); Figure 4 This is a structural schematic diagram of an embodiment of the present invention (after lifting and in the reverse tilting state). Figure 5 This is a schematic diagram of the internal structure of the filter chamber according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the rear structure of a receiving box according to an embodiment of the present utility model; In the diagram: 1. Frame, 2. Suction pipe, 3. Milling section, 4. Relay section, 40. Relay box, 41. Feed inlet, 42. Discharge outlet, 43. Air outlet, 5. Receiving section, 51. Receiving box, 52. Filter chamber, 520. Top cover, 521. Filter cartridge, 522. Filter backflushing system, 53. Base frame, 54. Tilting drive, 55. Material box door, 56. Feed inlet, 57. Air outlet, 5 8. Lifting drive; 59. Scissor lift frame; 591. Lifting outrigger one; 592. Lifting outrigger two; 6. Lifting rod; 71. Inclined plane one; 72. Inclined plane two; 81. Opening and closing drive; 82. Rotation drive; 83. Drive disc; 84. Connecting rod; 85. Guide sleeve; 86. Pin; 87. Locking pin; 91. Air tank; 92. Air outlet pipe; 93. Air inlet; 94. Control switch. Detailed Implementation

[0022] The principles and features of this utility model are described below. The embodiments given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0023] As shown in the attached figure, the material receiving mechanism of the road marking milling machine in this embodiment is set on the frame 1 of the road marking milling machine and connected to the output side of the milling part 3 through the suction pipe 2 (this embodiment adopts a non-telescopic suction pipe with a smooth inner wall, which is more conducive to the transmission of sticky materials). It includes a relay part 4 and a material receiving part 5, which are detachably connected.

[0024] The relay unit 4 includes a relay box 40 fixed to the frame 1. The relay box 40 has an inlet 41 for connecting to the suction pipe 2 on the side facing the suction pipe 2, and an outlet 42 on the side facing the receiving unit 5. The outlet 42 and the inlet 41 are connected by a pipe placed inside the relay box 40.

[0025] The receiving section 5 includes a receiving box 51 and an air chamber 52 disposed on the top of the receiving box 51. The receiving box 51 and the air chamber 52 are connected by a filtration mechanism. The receiving section 5 is provided with an inlet 56 facing the relay box 40, which communicates with the inner cavity of the receiving box 51 and is adapted to be connected to the outlet 42. The diameter of the inlet 56 is slightly larger than that of the outlet 42. The receiving section also includes a negative pressure fan that provides negative pressure suction to the suction pipe 2. The air inlet of the negative pressure fan is connected to the air outlet 57 of the air chamber 52. In this embodiment, the negative pressure fan is disposed inside the relay box 40. The relay box 40 is provided with an air inlet 43 on the side facing the receiving section 5, which is connected to the air inlet of the negative pressure fan. The air outlet 57 of the air chamber 52 is located on the side of the receiving section 5 facing the relay box 40 and is adapted to be connected to the air inlet 43. The diameter of the air outlet 57 is slightly larger than that of the air outlet 43. The relay box 40 is also provided with an opening for the negative pressure fan to discharge air. Both the inlet 56 and the air outlet 57 are provided with sealing elements, which can be sealing ring structures. When the receiving section 5 is connected to the relay section 4, the outlet 42 is sealed opposite to the inlet 56, and the air outlet 43 is sealed opposite to the air outlet 57. In other embodiments, the negative pressure fan can also be fixedly installed on the outside of the receiving section 5, for example, fixed on the outer wall of the receiving box 51 or the air chamber 52. In this case, the air outlet 57 of the air chamber 52 is led outward and directly connected to the air inlet of the negative pressure fan, and there is no need for a corresponding relay box 40. Therefore, there is no need to install the air outlet 43 shown in the figure on the relay box 40.

[0026] The receiving box 51 is provided with a box door 55 at the rear. The receiving box 51 is connected to the frame 1 through a base frame 53. The base frame 53 is connected to a lifting part for driving its lifting. A tilting drive 54 for driving the receiving box 51 to tilt backward relative to the base frame 53 is connected between the receiving box 51 and the base frame 53. The tilting drive 54 is a hydraulic cylinder, one end of which is hinged to the bottom of the receiving box 51 and the other end is hinged to the base frame 53. The lifting part and the tilting drive 54 are independently controlled for independently controlling the lifting and tilting of the receiving box.

[0027] In this embodiment, the relay unit 4 is fixed on the frame 1 and is fixedly connected to the suction pipe 2 through the front inlet 41. The rear side is designed to be separable from the receiving unit 5. The outlet 42 is sealed opposite to the inlet 56, and the air outlet 43 is sealed opposite to the air outlet 57. The marking hot melt material removed by the milling unit 3 enters the receiving box 51 in sequence through the suction pipe 2, inlet 41, relay box 40, outlet 42, and inlet 56 under the action of the negative pressure fan. The dust-laden gas is filtered by the filtration mechanism. The filtered clean gas enters the air chamber 52 and is finally discharged by the negative pressure fan through the air outlet 57 and air outlet 43. The relay box 40 is provided with an exhaust port for the negative pressure fan to exhaust air to the outside.

[0028] The receiving box 51 in the milling state is Figure 1As shown, when it is necessary to transfer the material in the receiving bin 51 to the transport vehicle, the lifting unit is activated to first raise the receiving bin 51 along with the base frame 53. The discharge port 42 is separated from the inlet 56, and the air vent 43 is separated from the outlet 57, until the receiving bin 51 is raised to the discharge position at the bin door 55, which is higher than the transport vehicle compartment. Figure 2 As shown; move the transport vehicle to the rear of the milling machine, with the truck bed aligned with the rear of the road marking milling machine, close to its frame 1, and positioned below the discharge port of the receiving box 51; then open the box door 55 and start the tilting drive 54, see Figure 4 As shown, the material is poured into the cargo compartment of the transport vehicle behind. Compared with the existing technology of simultaneously lifting and tipping to a certain height before opening the door to unload, the unloading is more controllable and avoids the high danger caused by the instantaneous spillage of material.

[0029] In this embodiment, a relay section 4 is connected between the suction pipe 2 and the receiving section 5. One side of the relay section is fixed to the suction pipe 2, and the other side is sealed to the receiving section 5 and is detachable. This design allows the material to be received through the suction pipe 2 to the receiving section 5 without affecting the milling process, while the relay section can be separated from the receiving section during the discharge process to facilitate the lifting and tilting of the receiving box. This solution eliminates the need for a telescopic suction pipe 2; a conventional pipe structure with a smooth inner surface is sufficient. This avoids the problems associated with telescopic pipes, such as the easily adhered hot-melt material from the milling process adhering to the pipe wall, causing blockages, and the inability to retract after extension. This ensures work efficiency and equipment stability.

[0030] In a preferred embodiment of this utility model, the lifting part includes a scissor lift frame 59 and a lifting drive 58 for driving the scissor lift frame 59 to rise and fall. The lifting drive 58 is a hydraulic cylinder, one end of which is hinged to the frame 1, and the other end is hinged to the scissor lift frame 59. The scissor lift frame 59 includes a first lifting leg 591 and a second lifting leg 592, which are connected by a scissor-like hinge at the middle. One end of the first lifting leg 591 is hinged to the frame 1, and the other end of the first lifting leg 591 is slidably connected to the base frame 53. One end of the second lifting leg 592 is hinged to the base frame 53, and the other end of the second lifting leg 592 is slidably connected to the frame 1. The lifting drive 58 drives lifting legs 591 and 592 to rotate around their hinge axis, thereby raising and lowering the base frame 53 connected to the top of the scissor lift frame 59 (during this process, the top of lifting leg 591 slides relative to the base frame 53, and the bottom of lifting leg 592 slides relative to the frame 1), thus raising and lowering the receiving box 51. Preferably, the lifting leg 591 and lifting leg 592 are hinged at a preset position in the middle. Specifically, the distance from the hinge point between the lifting leg 591 and the bottom of the lifting leg 592 is 'a', and the distance from the hinge point to the bottom of the lifting leg 592 is 'b', where b is slightly larger than a. This ensures that when the scissor lift frame 59 is raised to the preset position (higher than the transport vehicle compartment), the rear end of the receiving box 51 extends rearward and protrudes outward from the frame 1. Figure 2 As shown, the purpose is to ensure that the rear outlet of the receiving box 51 extends backward toward the cargo compartment of the transport vehicle, preventing spillage onto the outside of the cargo compartment when materials are subsequently poured into it. Furthermore, based on this, the upper half length of the lifting outriggers 591 and 592 (the length above the hinge point between them) can be adjusted as needed to prevent the receiving box 51 from tilting excessively backward after being lifted and moved backward, instead maintaining a relatively stable position. Figure 2 The slight backward tilt shown ensures the amount of backward movement of the tail of the receiving box 51, while also preventing excessive backward tilting during the lifting process, which would cause the material inside the box to accumulate at the box door.

[0031] In the above embodiments, the receiving box 51 lies flat on the frame 1 in its retracted state. In some cases, such as when the installation space on the frame 1 is limited and the scissor lift 59 is also in a retracted state, if it is lifted solely by the lifting drive 58, a large initial driving force is required, which can easily damage the lift structure in this state. Therefore, in a preferred embodiment of this utility model, the lifting part further includes a lifting rod 6, which is a telescopic mechanism fixed to the frame 1, with its telescopic end abutting against the bottom of the receiving part 5 (specifically, depending on the installation position, it abuts against the bottom of the receiving box 51, the base frame 53, or the scissor lift 59). Its function is to provide initial lifting assistance to the receiving part 5 at the beginning of the lifting, thereby reducing the initial driving force required to use the lifting drive 58 alone. When the receiving part 5 rises to a certain height, it disengages from the lifting rod 6, and then the lifting drive 58 is used alone to lift the scissor lift 59.

[0032] In a preferred embodiment of this utility model, in order to ensure that the receiving part 5 can smoothly separate from the relay part 4 during the lifting process and smoothly connect with the relay part 4 during the descent process, that is, to ensure that the discharge port 42 and the inlet 56 automatically seal and connect after the receiving part 5 descends, and the air vent 43 and the air outlet 57 automatically seal and connect after the receiving part 5 descends, the contact surface between the receiving part 5 and the relay box 40 is a sloped structure. The inlet 56 and the air outlet 57 are arranged on the first slope 71 on the upper front side of the receiving part 5, and the discharge port 42 and the air vent 43 are arranged on the second slope 72 on the upper rear side of the relay box 40. The first slope 71 protrudes forward from the front end face of the receiving box 51, and the first slope 71 and the second slope 72 cooperate through the sloped structure. During the descent of the receiving section 5, the inlet 56 presses directly against the outlet 42 and the outlet 57 presses directly against the outlet 43, automatically completing a good connection and seal of the four interfaces.

[0033] In a preferred embodiment of this utility model, the filtration mechanism (in this embodiment, a filter cartridge structure arranged in an array) is detachably mounted on a mounting bracket inside the air chamber 52. The filter media of the filtration mechanism is located inside the receiving box 51. The output side of the filtration mechanism is connected to the air chamber 52. A matching backflushing system 522 is provided inside the air chamber 52 and on the upper side of the filtration mechanism. Specifically, the backflushing system includes an air tank 91 and an air outlet pipe 92. The air outlet pipe 92 has an air outlet 93 corresponding to the middle of the filtration mechanism for backflushing the filtration mechanism. Preferably, the top of the air chamber 52 is provided with an openable top cover 520, and the filter backflushing system 522 is fixedly installed on the top cover 520. That is, the air tank 91, the air outlet pipe 92 and the control switch 94 are all installed on the top cover 520. When the filter mechanism needs to be replaced, the top cover 520 can be opened to lift the filter backflushing system 522, thereby exposing the filter mechanism, and the filter mechanism can be replaced from the top. The operation is convenient and quick, especially suitable for working conditions that require frequent replacement of the filter mechanism, and it is also clean and hygienic.

[0034] In addition, the top of the material box door 55 at the rear of the receiving box 51 is hinged to the receiving box 51 and is controlled to open by the opening and closing drive 81. Furthermore, to ensure the airtightness of the material box door when closed, a locking mechanism is also connected between the material box door 55 and the receiving box 51. Specifically, the locking mechanism is described in patent document CN110482047B. Figure 6 As shown, the drive disc 83 is rotatably mounted at the center of the material bin door 55. At least two connecting rods 84 are hinged to the outer periphery of the drive disc 83, and pins 86 are hinged to the outer ends of the connecting rods 84. Guide sleeves 85, corresponding one-to-one with the pins 86, are fixed on the material bin door 55, and the pins 86 can be inserted and removed through the guide sleeves 85. A locking pin 87, corresponding one-to-one with the pins 86, is fixedly provided on the receiving bin. The locking pin 87 can lock the pins 86 inserted therein. The tail of the pin 86 has a variable diameter section, that is, the diameter gradually decreases outward along the length of the rod. The drive disc 83 is connected to a rotary drive 247 for driving its rotation. Rotation of the drive disc 83 causes the pins 86 to insert into and withdraw from the locking pins 87, thereby locking and unlocking the material bin door 55.

Claims

1. A material receiving mechanism for a road marking milling machine, mounted on the frame (1) of the road marking milling machine and connected to the output side of the milling section (3) via a suction pipe (2), characterized in that, It includes a relay section (4) and a receiving section (5), which are detachably connected; The relay unit (4) includes a relay box (40) fixed to the frame (1). The relay box (40) has an inlet (41) for connecting to the suction pipe (2) on the side facing the suction pipe (2). The relay box (40) has an outlet (42) on the side facing the receiving unit (5). The outlet (42) and the inlet (41) are connected by a pipe placed inside the relay box (40). The receiving section (5) includes a receiving box (51) and an air chamber (52) disposed on the top of the receiving box (51). The receiving box (51) and the air chamber (52) are connected by a filter mechanism. The receiving section (5) is provided with an inlet (56) facing the relay box (40), which is connected to the inner cavity of the receiving box (51) and adapted to the outlet (42). The receiving section also includes a negative pressure fan that provides negative pressure suction to the suction pipe (2). The air inlet of the negative pressure fan is connected to the air outlet (57) of the air chamber (52). The receiving box (51) is provided with a box door (55) at the rear. The receiving box (51) is connected to the frame (1) via a base frame (53). The base frame (53) is connected to a lifting part for driving its lifting. A tilting drive (54) for driving the receiving box (51) to tilt relative to the base frame (53) is connected between the receiving box (51) and the base frame (53). The lifting part and the tilting drive (54) are independently controlled.

2. The material receiving mechanism of the road marking milling machine according to claim 1, characterized in that, The lifting unit includes a scissor lift frame (59) and a lifting drive (58) for driving the scissor lift frame (59) to lift. One end of the lifting drive (58) is hinged to the frame (1), and the other end is hinged to the scissor lift frame (59). The scissor lift frame (59) includes a first lifting leg (591) and a second lifting leg (592), which are connected by a scissor-type hinge in the middle. One end of the first lifting leg (591) is hinged to the frame (1), and the other end of the first lifting leg (591) is slidably connected to the base frame (53). One end of the second lifting leg (592) is hinged to the base frame (53), and the other end of the second lifting leg (592) is slidably connected to the frame (1).

3. The material receiving mechanism of the road marking milling machine according to claim 2, characterized in that, The first lifting leg (591) and the second lifting leg (592) are hinged at a preset position in the middle so that when the scissor lift frame (59) is raised to the preset position, the rear end of the receiving box (51) extends backward to protrude outward from the frame (1).

4. The material receiving mechanism of the road marking milling machine according to claim 3, characterized in that, The distance from the hinge point between the first lifting leg (591) and the second lifting leg (592) to the bottom of the first lifting leg (591) is a, and the distance from the hinge point to the bottom of the second lifting leg (592) is b, where b > a.

5. The material receiving mechanism of the road marking milling machine according to claim 1, characterized in that, The negative pressure fan is installed inside the relay box (40). The relay box (40) is provided with an air inlet (43) connected to the air inlet of the negative pressure fan on the side facing the receiving part (5). The air outlet (57) of the air chamber (52) is provided on the side of the receiving part (5) facing the relay box (40) and is adapted to be connected to the air inlet (43). The relay box is also provided with an outlet for the negative pressure fan to discharge air.

6. The material receiving mechanism of the road marking milling machine according to claim 1, characterized in that, The negative pressure fan is fixedly installed on the outside of the receiving part (5), and the air inlet of the negative pressure fan is connected to the air outlet (57) of the air chamber (52).

7. The material receiving mechanism of the road marking milling machine according to claim 1, characterized in that, The lifting section also includes a lifting rod (6), which is a telescopic mechanism fixed on the frame (1), and its telescopic end abuts against the bottom of the receiving section (5).

8. The material receiving mechanism of the road marking milling machine according to claim 1, characterized in that, The contact surface between the receiving section (5) and the relay box (40) is a sloping structure. The inlet (56) and the outlet (57) are located on the sloping surface on the upper front side of the receiving section (5), and the outlet (42) and the air vent (43) are located on the sloping surface on the upper rear side of the relay box (40).

9. The material receiving mechanism of the road marking milling machine according to claim 1, characterized in that, The filter mechanism is detachably mounted on a mounting bracket inside the air chamber (52) on the upper side. The filter body of the filter mechanism extends into the receiving box (51). The output side of the filter mechanism is connected to the air chamber (52). A filter backflushing system (522) adapted to it is provided inside the air chamber (52) and on the upper side of the filter mechanism.

10. The material receiving mechanism of the road marking milling machine according to claim 9, characterized in that, The top of the air chamber (52) is provided with an openable top cover (520), and the filter backflushing system (522) is fixedly installed on the top cover (520).

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