Asphalt mixing plant

Abstract

An asphalt mixing device includes an asphalt mixing tank body, a motor is installed on the upper part of the asphalt mixing tank body, and the housing of the motor is connected to the asphalt mixing tank body. The utility model adds a linkage asphalt cleaning agent baffle plate, which is a combination of a square rod, a cover plate, a baffle plate, a square tube, etc., so that the baffle plate and the cover plate can be linked. When the personnel no longer manually push the cover plate, the personnel can turn on the motor for stirring. The cover plate can be reset under the action of the elastic force of a second spring, thereby automatically driving the baffle plate to be in a state of blocking the through hole, thereby preventing splashing asphalt from contaminating the cleaning agent nozzle during the stirring process of the motor driving the stirring blade. The above structure does not involve motor drive and screw nut structure, and is more convenient for blocking the through hole.

Description

Technical Field

[0001] The utility model relates to an asphalt processing device, more precisely an asphalt mixing device. Background Art

[0002] In order to prevent asphalt from contaminating the cleaning agent nozzle, the existing asphalt mixing device needs a motor to drive the lead screw to control the opening and closing of the protective plate. This device requires a motor drive device and a lead screw nut mechanism, and the driving method is relatively complicated. For example, Patent Publication No.: CN216396014U discloses a solvent mixing device for petroleum asphalt production, as shown in Figure 8. This device requires a motor to drive the lead screw nut mechanism to control the opening and closing of the protective plate used to place the asphalt contamination clogging the nozzle. The driving method of this device is relatively complicated, so we consider a device that can realize the opening and closing of the protective plate without motor drive. Summary of the invention

[0003] The purpose of the utility model is to provide an asphalt mixing device, which can utilize a combination of square rods, cover plates, baffles, square tubes, etc., so that the baffles and the cover plates can be linked. When personnel no longer manually push the cover plates, personnel can turn on the motor for stirring, and the cover plates can be reset under the action of the elastic force of a second spring, thereby automatically driving the baffles to be in a state of blocking the through hole, thereby preventing splashing asphalt from contaminating the cleaning agent nozzle during the stirring process of the motor-driven stirring blades. The above structure does not involve motor drive and screw nut structure, and is more convenient for blocking the through hole.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] The asphalt mixing device comprises an asphalt mixing tank body, a motor is installed on the upper part of the asphalt mixing tank body, the outer shell of the motor is connected to the asphalt mixing tank body, the output shaft of the motor is connected to the rotating shaft, the side circumference of the rotating shaft is connected to a plurality of stirring blades, the plurality of stirring blades are located inside the asphalt mixing tank body, inclined pipes are installed on both sides of the asphalt mixing tank body, one end of the inclined pipe is connected to the inside of the asphalt mixing tank body, and the other end of the inclined pipe is connected to a filling box, the filling box is a rectangular shell structure with an upper opening, a linkage asphalt cleaning agent shielding plate is installed on the asphalt mixing tank body, and the linkage asphalt cleaning agent shielding plate includes A square tube is provided, both sides of the asphalt mixing tank body are equipped with square tubes, the outer side of the square tube is connected to the outer side of the asphalt mixing tank body, the square tubes on both sides of the asphalt mixing tank body are plugged with square rods, the two ends of the square rod are respectively connected to a cover plate, the cover plate can respectively close the upper openings of the two filling boxes, the middle of the square rod is connected to a baffle, the side of the asphalt mixing tank body is provided with a through hole, the outer side of the asphalt mixing tank body is connected to a fixed plate, the upper part of the fixed plate is connected to a cleaning agent nozzle, the outlet of the cleaning agent nozzle faces the inside of the through hole, and the baffle can be blocked between the through hole and the outlet of the cleaning agent nozzle. In order to further achieve the purpose of the utility model, the following technical scheme can also be adopted: a second spring is installed between the asphalt mixing tank body and the cover plate, one end of the second spring is connected to the asphalt mixing tank body, and the other end of the second spring is connected to the cover plate.

[0006] An asphalt discharge valve is installed at the bottom of the asphalt mixing tank body, and the inlet of the asphalt discharge valve is connected to the interior of the asphalt mixing tank body.

[0007] The trigger device is installed on the asphalt mixing tank body, and the trigger device includes a first insulating plate, on which a bearing, a first contact, a second contact, a switch, and a power supply are installed. The inner ring of the bearing is plugged with an insulating rod, one end of the insulating rod is connected to the first insulating plate, the outer ring of the bearing is connected to a silver conductive plate, the middle part of the silver conductive plate is connected to a first spring, one end of the first spring is connected to the second contact, the first spring is in a compressed state, the silver conductive plate and the silver contact can contact and cooperate, an interface is connected to the first insulating plate, the interface includes a first contact and a second contact, the first contact and the second contact are both connected to the first insulating plate, the silver contact is connected to the first insulating plate, the silver contact and the first contact are respectively connected to the positive and negative poles of the power supply end of the motor, the interface is connected in series with the switch and the power supply, wherein the first contact and the second contact are connected at both ends of the series circuit of the switch and the power supply respectively, one side of the cover plate is connected to the second insulating plate, and the second insulating plate can push the silver conductive plate and the silver contact to disengage.

[0008] The upper part of the cover plate is connected to the handle bar.

[0009] The advantages of the present invention are as follows: the present invention adds a linkage asphalt cleaning agent shielding plate, which is combined with a square rod, a cover plate, a baffle, a square tube, etc., so that the baffle and the cover plate can be linked. When the personnel no longer push the cover plate manually, the personnel can turn on the motor for stirring. The cover plate can be reset under the action of the second spring force, thereby automatically driving the baffle to be in a state of blocking the through hole, thereby preventing the splashing asphalt from contaminating the cleaning agent nozzle during the stirring process of the motor driving the stirring blade. The above structure does not involve motor drive and screw nut structure, and it is more convenient to block the through hole. Before the personnel manually push the cover plate to open, the personnel will naturally turn off the motor. After the personnel manually push the cover plate to open, the baffle can follow the linkage and break away from the blocking state of the through hole. At this time, the cleaning agent nozzle can spray cleaning agent into the inside of the through hole and clean the inside of the asphalt mixing tank. After the cleaning is completed, the personnel can fill the raw materials into the filling box. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0011] Figure 1 This is one of the structural diagrams of the utility model;

[0012] Figure 2 This is the second structural diagram of the utility model;

[0013] Figure 3 For this utility model Figure 2 A schematic diagram of a top view structure;

[0014] Figure 4 This is a diagram of the use state of the cover of the utility model after it is opened.

[0015] Figure 5 For this utility model Figure 4 A schematic diagram of a top view structure;

[0016] Figure 6 It is a schematic diagram of the circuit structure of the utility model;

[0017] Figure 7 A schematic diagram of the structure of the utility model with a handle bar (23) added;

[0018] Figure 8 It is a structural schematic diagram of the prior art patent publication number: CN216396014U.

[0019] Labeled parts: 1 motor 2 asphalt mixing tank 3 square tube 4 cover plate 5 square rod 6 filling box 7 inclined surface 8 through hole 9 inclined tube 10 baffle 11 mixing blade 12 rotating shaft 13 asphalt discharge valve 14 through hole 15 cleaning agent nozzle 16 fixing plate 17 first contact 18 second contact 19 first spring 20 bearing 21 silver conductive plate 22 silver contact 23 handle rod 24 second spring 25 switch 26 power supply 27 second insulating plate 29 first insulating plate. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0021] Embodiment 1:

[0022] Asphalt mixing plant, such as Figure 1-Figure 7 As shown, it includes an asphalt mixing tank body 2, a motor 1 is installed on the upper part of the asphalt mixing tank body 2, the shell of the motor 1 is connected to the asphalt mixing tank body 2, the output shaft of the motor 1 is connected to the rotating shaft 12, the side of the rotating shaft 12 is connected to a plurality of stirring blades 11, and the plurality of stirring blades 11 are located inside the asphalt mixing tank body 2, and inclined pipes 9 are installed on both sides of the asphalt mixing tank body 2, one end of the inclined pipe 9 is connected to the inside of the asphalt mixing tank body 2, and the other end of the inclined pipe 9 is connected to the filling box 6, and the filling box 6 is a rectangular shell structure with an upper opening, and a linkage asphalt cleaning agent shielding plate is installed on the asphalt mixing tank body 2, and the linkage asphalt cleaning agent shielding plate includes a square tube 3, asphalt Square tubes 3 are installed on both sides of the mixing tank body 2, and the outer sides of the square tubes 3 are connected to the outer sides of the asphalt mixing tank body 2. The square tubes 3 located on both sides of the asphalt mixing tank body 2 are plugged with square rods 5, and the two ends of the square rods 5 are respectively connected to a cover plate 4, and the cover plates 4 can respectively close the upper openings of the two filling boxes 6. The middle of the square rods 5 is connected to a baffle 10, and a through hole 14 is provided on the side of the asphalt mixing tank body 2. The outer side of the asphalt mixing tank body 2 is connected to a fixing plate 16, and the upper part of the fixing plate 16 is connected to a cleaning agent nozzle 15. The outlet of the cleaning agent nozzle 15 faces the inside of the through hole 14, and the baffle 10 can block between the through hole 14 and the outlet of the cleaning agent nozzle 15.

[0023] The utility model adds a linkage asphalt cleaning agent shielding plate, which is combined with a square rod 5, a cover plate 4, a baffle 10, a square tube 3, etc., so that the baffle 10 and the cover plate 4 can be linked. When the personnel no longer manually push the cover plate 4, the personnel can turn on the motor 1 for stirring, and the cover plate 4 can be reset under the action of the elastic force of the second spring 24, thereby automatically driving the baffle 10 to be in a state of blocking the through hole 14, so that when the motor 1 drives the stirring blade 11 to stir, the splashing asphalt is prevented from contaminating the cleaning agent spray head 15. The above structure does not involve motor drive and lead screw nut structure, and it is more convenient to block the through hole 14. Before the personnel manually push the cover plate 4 to open, the personnel will naturally turn off the motor 1. After the personnel manually push the cover plate 4 to open, the baffle 10 can follow the linkage and break away from the blocking state of the through hole 14. At this time, the cleaning agent spray head 15 can spray cleaning agent into the inside of the through hole 14 and clean the inside of the asphalt mixing tank 2. After the cleaning is completed, the personnel can fill the inside of the filling box 6 with raw materials.

[0024] Material selection and feasibility analysis for specific implementation: The samples we actually made use the drawings in the specification as drawings, and are implemented according to the proportions and matching methods of the various components in the drawings in the specification. The connection is a common connection method such as strong adhesive connection, welding, riveting, flange connection, and one-piece molding connection. In actual production, the corresponding connection method, thickness and strength of the connection point can be selected according to the actual connection strength requirements without creativity. The inner ring of the bearing 20 is connected to the insulating rod 28 through an adhesive after being plugged in, and the bearing 20 does not contact the asphalt mixing tank 2. The inlet of the cleaning agent nozzle 15 can be connected to a hose, one end of the hose is connected to the cleaning agent nozzle 15, and the other end of the hose is connected to a submersible pump, which is placed in a cleaning agent tank. When the personnel manually push the cover plate 4, they must be aware that the filling box 6 is opened and stirring cannot be performed at this time, thereby avoiding the baffle 10 no longer blocking the through hole 14 during the stirring state. An inclined surface 7 is set at the inner bottom of the clamping box 6.

[0025] Embodiment 2:

[0026] Asphalt mixing plant, such as Figure 1-Figure 7As shown, it includes an asphalt mixing tank body 2, a motor 1 is installed on the upper part of the asphalt mixing tank body 2, the shell of the motor 1 is connected to the asphalt mixing tank body 2, the output shaft of the motor 1 is connected to the rotating shaft 12, the side of the rotating shaft 12 is connected to a plurality of stirring blades 11, and the plurality of stirring blades 11 are located inside the asphalt mixing tank body 2, and inclined pipes 9 are installed on both sides of the asphalt mixing tank body 2, one end of the inclined pipe 9 is connected to the inside of the asphalt mixing tank body 2, and the other end of the inclined pipe 9 is connected to the filling box 6, and the filling box 6 is a rectangular shell structure with an upper opening, and a linkage asphalt cleaning agent shielding plate is installed on the asphalt mixing tank body 2, and the linkage asphalt cleaning agent shielding plate includes a square tube 3, asphalt Square tubes 3 are installed on both sides of the mixing tank body 2, and the outer side of the square tubes 3 is connected to the outer side of the asphalt mixing tank body 2. Square rods 5 are inserted into the square tubes 3 on both sides of the asphalt mixing tank body 2. The two ends of the square rods 5 are respectively connected to a cover plate 4, which can respectively close the upper openings of the two filling boxes 6. The middle of the square rods 5 is connected to a baffle 10. A through hole 14 is opened on the side of the asphalt mixing tank body 2. The outer side of the asphalt mixing tank body 2 is connected to a fixing plate 16. The upper part of the fixing plate 16 is connected to a cleaning agent nozzle 15. The outlet of the cleaning agent nozzle 15 faces the inside of the through hole 14. The baffle 10 can be blocked between the through hole 14 and the outlet of the cleaning agent nozzle 15. A second spring 24 is installed between the asphalt mixing tank body 2 and the cover plate 4. One end of the second spring 24 is connected to the asphalt mixing tank body 2, and the other end of the second spring 24 is connected to the cover plate 4.

[0027] The second spring 24 of the present invention can facilitate the return of the cover plate 4 .

[0028] Embodiment 3:

[0029] Asphalt mixing plant, such as Figure 1-Figure 7As shown, it includes an asphalt mixing tank body 2, a motor 1 is installed on the upper part of the asphalt mixing tank body 2, the shell of the motor 1 is connected to the asphalt mixing tank body 2, the output shaft of the motor 1 is connected to the rotating shaft 12, the side of the rotating shaft 12 is connected to a plurality of stirring blades 11, and the plurality of stirring blades 11 are located inside the asphalt mixing tank body 2, and inclined pipes 9 are installed on both sides of the asphalt mixing tank body 2, one end of the inclined pipe 9 is connected to the inside of the asphalt mixing tank body 2, and the other end of the inclined pipe 9 is connected to the filling box 6, and the filling box 6 is a rectangular shell structure with an upper opening, and a linkage asphalt cleaning agent shielding plate is installed on the asphalt mixing tank body 2, and the linkage asphalt cleaning agent shielding plate includes a square tube 3, asphalt Square tubes 3 are installed on both sides of the mixing tank body 2. The outer side of the square tubes 3 is connected to the outer side of the asphalt mixing tank body 2. The square tubes 3 on both sides of the asphalt mixing tank body 2 are plugged with square rods 5. The two ends of the square rods 5 are respectively connected to a cover plate 4. The cover plate 4 can respectively close the upper openings of the two filling boxes 6. The middle of the square rods 5 is connected to a baffle 10. A through hole 14 is opened on the side of the asphalt mixing tank body 2. The outer side of the asphalt mixing tank body 2 is connected to a fixing plate 16. The upper part of the fixing plate 16 is connected to a cleaning agent nozzle 15. The outlet of the cleaning agent nozzle 15 faces the inside of the through hole 14. The baffle 10 can be blocked between the through hole 14 and the outlet of the cleaning agent nozzle 15. An asphalt discharge valve 13 is installed at the bottom of the asphalt mixing tank body 2. The inlet of the asphalt discharge valve 13 is connected to the inside of the asphalt mixing tank body 2.

[0030] The asphalt discharge valve 13 of the utility model can conveniently discharge the mixed asphalt.

[0031] Embodiment 4:

[0032] Asphalt mixing plant, such as Figure 1-Figure 7As shown, it includes an asphalt mixing tank body 2, a motor 1 is installed on the upper part of the asphalt mixing tank body 2, the shell of the motor 1 is connected to the asphalt mixing tank body 2, the output shaft of the motor 1 is connected to the rotating shaft 12, the side of the rotating shaft 12 is connected to a plurality of stirring blades 11, and the plurality of stirring blades 11 are located inside the asphalt mixing tank body 2, and inclined pipes 9 are installed on both sides of the asphalt mixing tank body 2, one end of the inclined pipe 9 is connected to the inside of the asphalt mixing tank body 2, and the other end of the inclined pipe 9 is connected to the filling box 6, and the filling box 6 is a rectangular shell structure with an upper opening, and a linkage asphalt cleaning agent shielding plate is installed on the asphalt mixing tank body 2, and the linkage asphalt cleaning agent shielding plate includes a square tube 3, asphalt Square tubes 3 are installed on both sides of the mixing tank body 2, and the outer sides of the square tubes 3 are connected to the outer sides of the asphalt mixing tank body 2. The square tubes 3 located on both sides of the asphalt mixing tank body 2 are plugged with square rods 5, and the two ends of the square rods 5 are respectively connected to a cover plate 4, and the cover plates 4 can respectively close the upper openings of the two filling boxes 6. The middle of the square rods 5 is connected to a baffle 10, and a through hole 14 is provided on the side of the asphalt mixing tank body 2. The outer side of the asphalt mixing tank body 2 is connected to a fixing plate 16, and the upper part of the fixing plate 16 is connected to a cleaning agent nozzle 15. The outlet of the cleaning agent nozzle 15 faces the inside of the through hole 14, and the baffle 10 can block between the through hole 14 and the outlet of the cleaning agent nozzle 15. The asphalt mixing tank body 2 is provided with a trigger device, which includes a first insulating plate 29, on which a bearing 20, a first contact 17, a second contact 18, a switch 25, and a power supply 26 are installed. The inner ring of the bearing 20 is plugged with an insulating rod 28, one end of the insulating rod 28 is connected to the first insulating plate 29, the outer ring of the bearing 20 is connected to a silver conductive plate 21, the middle of the silver conductive plate 21 is connected to a first spring 19, one end of the first spring 19 is connected to the second contact 18, the first spring 19 is in a compressed state, the silver conductive plate 21 and the silver contact 22 can contact and cooperate, and the first An interface is connected to the insulating plate 29, and the interface includes a first contact 17 and a second contact 18. The first contact 17 and the second contact 18 are both connected to the first insulating plate 29. The first insulating plate 29 is connected to the silver contact 22, and the silver contact 22 and the first contact 17 are respectively connected to the positive and negative poles of the power supply terminal of the motor 1. The interface is connected in series with the switch 25 and the power supply 26, wherein the two ends of the series circuit of the switch 25 and the power supply 26 are respectively connected to the first contact 17 and the second contact 18. One side of the cover plate 4 is connected to the second insulating plate 27, and the second insulating plate 27 can push the silver conductive plate 21 and the silver contact 22 to disengage.

[0033] The trigger device of the utility model can be used to cover the filling box 6 without shielding the cover plate 4. Figure 5After the state is reached, the second insulating plate 27 is used to drive the silver conductive plate 21 to disengage from the silver contact 22, thereby powering off the motor 1, thereby ensuring that the motor 1 can stop running after the baffle 10 no longer blocks the through hole 14, thereby avoiding the baffle 10 from removing the blocking state of the through hole 14 during the operation of the motor 1, thereby avoiding the asphalt from clogging and contaminating the cleaning agent nozzle 15 during the stirring process of the motor 1. Figure 3 In the state of cover plate 4, the filling box 6 is in a completely closed state, at which time the silver conductive plate 21 and the silver contact 22 can contact and cooperate, and the motor can be turned on.

[0034] Embodiment 5:

[0035] Asphalt mixing plant, such as Figure 1-Figure 7 As shown, it includes an asphalt mixing tank body 2, a motor 1 is installed on the upper part of the asphalt mixing tank body 2, the shell of the motor 1 is connected to the asphalt mixing tank body 2, the output shaft of the motor 1 is connected to the rotating shaft 12, the side of the rotating shaft 12 is connected to a plurality of stirring blades 11, and the plurality of stirring blades 11 are located inside the asphalt mixing tank body 2, and inclined pipes 9 are installed on both sides of the asphalt mixing tank body 2, one end of the inclined pipe 9 is connected to the inside of the asphalt mixing tank body 2, and the other end of the inclined pipe 9 is connected to the filling box 6, and the filling box 6 is a rectangular shell structure with an upper opening, and a linkage asphalt cleaning agent shielding plate is installed on the asphalt mixing tank body 2, and the linkage asphalt cleaning agent shielding plate includes a square tube 3, asphalt Square tubes 3 are installed on both sides of the mixing tank body 2, and the outer side of the square tubes 3 is connected to the outer side of the asphalt mixing tank body 2. The square tubes 3 on both sides of the asphalt mixing tank body 2 are plugged with square rods 5. The two ends of the square rods 5 are respectively connected to a cover plate 4, which can respectively close the upper openings of the two filling boxes 6. The middle of the square rods 5 is connected to a baffle 10. A through hole 14 is provided on the side of the asphalt mixing tank body 2. The outer side of the asphalt mixing tank body 2 is connected to a fixing plate 16. The upper part of the fixing plate 16 is connected to a cleaning agent nozzle 15. The outlet of the cleaning agent nozzle 15 faces the inside of the through hole 14. The baffle 10 can be blocked between the through hole 14 and the outlet of the cleaning agent nozzle 15. The upper part of the cover plate 4 is connected to a handle rod 23.

[0036] The handle bar 23 of the utility model can be operated conveniently.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention.

Claims

1. Asphalt mixing device, characterized in that: The invention comprises an asphalt mixing tank body (2), wherein a motor (1) is installed on the upper part of the asphalt mixing tank body (2), the outer shell of the motor (1) is connected to the asphalt mixing tank body (2), the output shaft of the motor (1) is connected to a rotating shaft (12), the side periphery of the rotating shaft (12) is connected to a plurality of stirring blades (11), the plurality of stirring blades (11) are located inside the asphalt mixing tank body (2), inclined pipes (9) are installed on both sides of the asphalt mixing tank body (2), one end of the inclined pipe (9) is connected to the inside of the asphalt mixing tank body (2), and the other end of the inclined pipe (9) is connected to a filling box (6), the filling box (6) is a rectangular shell structure with an upper opening, a linkage asphalt cleaning agent shielding plate is installed on the asphalt mixing tank body (2), the linkage asphalt cleaning agent shielding plate comprises a square pipe (3), the asphalt mixing tank body (2) is provided with a plurality of stirring blades (11), and the plurality of stirring blades (11) are located inside the asphalt mixing tank body (2). ) are installed on both sides of the asphalt mixing tank (2), the outer side of the square tube (3) is connected to the outer side of the asphalt mixing tank (2), the square tubes (3) located on both sides of the asphalt mixing tank (2) are plugged with square rods (5), the two ends of the square rod (5) are respectively connected to a cover plate (4), the cover plate (4) can respectively close the upper openings of the two filling boxes (6), the middle of the square rod (5) is connected to a baffle (10), the side of the asphalt mixing tank (2) is provided with a through hole (14), the outer side of the asphalt mixing tank (2) is connected to a fixing plate (16), the upper part of the fixing plate (16) is connected to a cleaning agent nozzle (15), the outlet of the cleaning agent nozzle (15) faces the inside of the through hole (14), and the baffle (10) can block between the through hole (14) and the outlet of the cleaning agent nozzle (15).

2. The asphalt mixing device according to claim 1, characterized in that: A second spring (24) is installed between the asphalt mixing tank body (2) and the cover plate (4); one end of the second spring (24) is connected to the asphalt mixing tank body (2), and the other end of the second spring (24) is connected to the cover plate (4).

3. The asphalt mixing device according to claim 1, characterized in that: An asphalt discharge valve (13) is installed at the bottom of the asphalt mixing tank body (2), and the inlet of the asphalt discharge valve (13) is connected to the interior of the asphalt mixing tank body (2).

4. The asphalt mixing device according to claim 1, characterized in that: The asphalt mixing tank body (2) is provided with a trigger device, the trigger device comprising a first insulating plate (29), a bearing (20), a first contact (17), a second contact (18), a switch (25), and a power source (26) being provided on the first insulating plate (29), an insulating rod (28) being inserted into the inner ring of the bearing (20), one end of the insulating rod (28) being connected to the first insulating plate (29), an outer ring of the bearing (20) being connected to a silver conductive plate (21), a middle part of the silver conductive plate (21) being connected to a first spring (19), one end of the first spring (19) being connected to the second contact (18), the first spring (19) being in a compressed state, the silver conductive plate (21) being able to contact and cooperate with the silver contact (22), and the first insulating plate (20) being able to contact and cooperate with the silver contact (22). An interface is connected to the edge plate (29), the interface comprising a first contact (17) and a second contact (18), the first contact (17) and the second contact (18) are both connected to the first insulating plate (29), the first insulating plate (29) is connected to a silver contact (22), the silver contact (22) and the first contact (17) are respectively connected to the positive and negative poles of the power supply terminal of the motor (1), the interface is connected in series with the switch (25) and the power supply (26), wherein the two ends of the series circuit of the switch (25) and the power supply (26) are respectively connected to the first contact (17) and the second contact (18), one side of the cover plate (4) is connected to the second insulating plate (27), and the second insulating plate (27) can push the silver conductive plate (21) and the silver contact (22) to disengage.

5. The asphalt mixing device according to claim 1, characterized in that: The upper part of the cover plate (4) is connected to the handle bar (23).

6. The asphalt mixing device according to claim 1, characterized in that: It also includes a trigger device, which includes an insulating plate, on which a bearing, a first contact, a second contact, a switch, and a power supply are installed. The inner ring of the bearing is plugged with an insulating rod, one end of the insulating rod is connected to the insulating plate, the outer ring of the bearing is connected to a silver conductive plate, the middle part of the silver conductive plate is connected to a first spring, one end of the first spring is connected to the second contact, the first spring is in a compressed state, the silver conductive plate and the silver contact can contact and cooperate, an interface is connected to the insulating plate, the interface includes a first contact and a second contact, both the first contact and the second contact are connected to the insulating plate, the silver contact is connected to the insulating plate, the silver contact and the first contact are respectively connected to the positive and negative poles of the power supply end of the motor, the interface is connected in series with the switch and the power supply, wherein the first contact and the second contact are respectively connected at both ends of the series circuit of the switch and the power supply, one side of the cover plate is connected to the insulating plate, and the insulating plate can push the silver conductive plate and the silver contact to disengage.

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