Modified asphalt emulsion paver

Abstract

The application discloses a modified asphalt emulsification paving machine and relates to the field of asphalt spreaders. The machine can buffer the pressure in a storage device, avoid leakage or explosion of the storage device, avoid affecting workers, avoid waste of asphalt, avoid solidification of the asphalt when the asphalt is stored in the storage device for a long time, and maintain normal use of the asphalt.

Description

Technical Field

[0001] This invention relates to the field of asphalt spreaders, and more particularly to a modified asphalt emulsion paving machine. Background Technology

[0002] Asphalt spreaders are one of the oldest types of road construction machinery. In construction and maintenance projects using asphalt penetration surface treatment, tack coats, primer coats, and in-situ mixing of asphalt-stabilized soil, asphalt spreaders are used to spray various liquid asphalt materials (including hot asphalt and emulsified asphalt). Large-capacity asphalt spreader trucks are also used as transport vehicles for asphalt and emulsified asphalt in engineering projects. Asphalt spreaders are widely used in highways, urban roads, airports, ports, reservoirs, and other engineering projects.

[0003] During operation, asphalt spreaders typically use external pipelines to continuously pump asphalt into a storage device. A pump then draws and spreads the asphalt from the storage device. However, with traditional spreaders, if the pump's extraction speed is slower than the rate at which asphalt enters the storage device, excessive pressure can occur. If this pressure cannot be buffered, the storage device may leak or explode, affecting workers and wasting asphalt. Furthermore, prolonged static storage of asphalt can cause it to solidify, hindering its usability. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes a modified asphalt emulsion paving machine. This device can buffer the pressure in the asphalt storage device, avoiding damage to workers' hands and waste of asphalt, while also stirring the asphalt to maintain its normal use.

[0005] This invention provides a modified asphalt emulsion paving machine, comprising a base plate with rolling wheels at the bottom, a fixing plate disposed on the side of the base plate opposite to the rolling wheels, and a mounting box disposed on one side of the fixing plate. A drive motor serving as a power source is disposed within the mounting box, and a rotating shaft is coaxially connected to the output shaft of the drive motor. The end of the rotating shaft opposite to the drive motor passes through and extends to the side of the fixing plate opposite to the mounting box. A plurality of support rods connected to the base plate are disposed on the side of the fixing plate opposite to the mounting box, and a mixing assembly is disposed at the end of each support rod opposite to the base plate. The mixing assembly is used to control the mixing of the asphalt. The base plate is also equipped with a spreading assembly and a buffer assembly, which are located between the mixing assembly and the base plate. The spreading assembly and the mixing assembly are connected by a first connecting pipe for controlling the spraying of asphalt in the mixing assembly. The spreading assembly and the buffer assembly are connected by a guide pipe for absorbing excess asphalt in the spreading assembly. The buffer assembly and the mixing assembly are connected by a second connecting pipe for the asphalt in the buffer assembly to flow back into the mixing assembly. The mixing assembly and the rotating shaft are connected by a transmission assembly. The buffer assembly is connected to the end of the rotating shaft away from the drive motor.

[0006] The bottom is equipped with a camera and a control system, which includes an image acquisition module, an analysis module, and a control module.

[0007] The image acquisition module is used to acquire road surface image information captured by the camera as the target image;

[0008] The analysis module is used to acquire the target image within the image acquisition module, calculate the target filling area within the target image, and generate a filling signal;

[0009] The control module is used to acquire the filling signal and control the amount of asphalt discharged from the pump body according to the filling signal.

[0010] Preferably, the control system further includes a flow monitoring module, which is used to obtain the asphalt inflow rate in the storage device and to obtain the asphalt content in the storage device based on the asphalt inflow rate and the asphalt discharge rate in the control module.

[0011] Preferably, the storage device is equipped with a sensor for detecting the volume of asphalt in the storage device, and also includes a comparison module for acquiring the volume of asphalt and the asphalt content, calculating the difference between the volume of asphalt and the asphalt content to obtain an error value, and having a preset threshold. The error value is compared with the threshold value. If the error value is less than the threshold value, a normal signal is generated; if the error value is greater than the threshold value, an abnormal signal is generated.

[0012] Preferably, the mixing mechanism includes a mixing tank and a mixing roller located inside the mixing tank. One end of the mixing roller away from the fixed plate is rotatably connected to the inner wall of one side of the mixing tank, and the other end extends through and out of the mixing tank and is rotatably connected to the fixed plate. The mixing tank is also provided with a feed pipe for feeding materials.

[0013] Preferably, the transmission assembly includes a first pulley, a second pulley, and a belt. The first pulley is disposed outside the rotating shaft on the side of the fixed plate facing the mixing tank, the second pulley is disposed on the mixing roller located outside the mixing tank, and the belt is sleeved on the first pulley and the second pulley to control the rotation of the mixing roller by rotating the rotating shaft.

[0014] Preferably, the spreading assembly includes a spray head, a storage tank, and a hydraulic pump disposed in the storage tank. The storage tank is connected to the mixing tank through a first connecting pipe. The outlet of the hydraulic pump is provided with a discharge pipe that passes through and extends to the outside of the storage tank. The spray head is disposed on the side of the base plate facing the roller. The end of the discharge pipe away from the hydraulic pump passes through the base plate and is connected to the spray head.

[0015] Preferably, the buffer assembly includes a buffer box, a reciprocating screw, and a spiral tube sleeved on the outer ring of the reciprocating screw and with its inner ring threaded into the reciprocating screw. The reciprocating screw is located inside the buffer box, with one end rotatably connected to the inner wall of the buffer box and the other end penetrating and extending out of the buffer box to connect with a rotating shaft. The outer ring of the spiral tube is fitted with an extrusion plate, and the extrusion plate has a through hole. Fixed rods connected to the extrusion plate are provided on both sides of the through hole. A movable plate is sleeved on the fixed rod, and a sealing plug is provided on the side of the movable plate facing the through hole. A baffle is also provided on the side of the fixed rod away from the extrusion plate. A second elastic member is sleeved on the fixed rod, and the second member is located between the baffle and the movable plate. The buffer box is connected to the mixing tank through a second connecting pipe, and the buffer box is connected to the storage tank through a through pipe.

[0016] Preferably, the fixing plate is further provided with a handle assembly on the side facing the mounting plate. The handle assembly includes a pull rod, a hand grip, and a first elastic member. One end of the pull rod is hinged to the side of the mounting cavity away from the fixing plate, and the other end is connected to the hand grip. One end of the first elastic member is hinged to the fixing plate, and the other end is slidably connected to the side of the pull rod facing the fixing plate.

[0017] Preferably, the pull rod has a groove on the side facing the fixed plate, and a slider is slidably connected in the groove. The end of the first elastic member away from the fixed plate is hinged to the slider.

[0018] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects:

[0019] This device comprises a drive motor, a buffer assembly, a mixing assembly, a spreading assembly, and a handle assembly. The mixing assembly stirs and transports the asphalt, which then flows through a first connecting pipe into the spreading assembly. A hydraulic pump within the spreading assembly sprays the asphalt onto the road surface. When the storage tank in the spreading assembly is overfilled, the excess asphalt flows through a conduit into the buffer assembly, which then re-transports it back into the mixing assembly. This invention buffers the pressure within the asphalt storage device, preventing hand injuries and asphalt waste, while simultaneously maintaining the asphalt's usability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal cross-sectional structure.

[0021] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle.

[0022] Figure 3 This is a schematic diagram of the overall appearance and structure.

[0023] Reference numerals: 1. Base plate; 11. Drive motor; 12. Rotating shaft; 13. Support rod; 2. Fixing plate; 3. Mounting box; 4. Handle assembly; 41. Pull rod; 42. Hand grip handle; 43. First elastic element; 5. Buffer assembly; 51. Buffer box; 52. Reciprocating screw; 53. Screw tube; 54. Extrusion plate; 541. Fixing rod; 542. Movable plate; 543. Second elastic element; 544. Baffle; 545. Sealing plug; 546. Through hole; 6. Spreading assembly; 61. Storage box; 62. Hydraulic pump; 63. Discharge pipe; 64. Spray head; 7. Through pipe; 8. First connecting pipe; 9. Mixing assembly; 91. Mixing box; 92. Mixing roller; 93. Feed pipe; 94. Second connecting pipe; 10. Transmission assembly; 101. First pulley; 102. Belt; 103. Second pulley. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0025] pass Figure 1 , Figure 3As shown, the modified asphalt emulsion paving machine proposed in this invention includes a base plate 1 with rolling wheels at the bottom. A fixing plate 2 is provided on the side of the base plate 1 away from the rolling wheels. A mounting box 3 is provided on one side of the fixing plate 2. A drive motor 11, serving as a power source, is installed inside the mounting box 3. A rotating shaft 12 is coaxially connected to the output shaft of the drive motor 11. The end of the rotating shaft 12 away from the drive motor 11 passes through and extends to the side of the fixing plate 2 away from the mounting box 3. Several support rods 13 connected to the base plate 1 are provided on the side of the fixing plate 2 away from the mounting box 3. A mixing assembly 9 is provided at the end of the several support rods 13 away from the base plate 1. The mixing assembly 9 is used to control the mixing of asphalt. The plate 1 is also equipped with a spreading component 6 and a buffer component 5. The spreading component 6 and the buffer component 5 are located between the mixing component 9 and the base plate 1. The spreading component 6 and the mixing component 9 are connected by a first connecting pipe 8, which is used to control the spraying of asphalt in the mixing component 9. The spreading component 6 and the buffer component 5 are connected by a guide pipe 7, which is used to absorb excess asphalt in the spreading component 6. The buffer component 5 and the mixing component 9 are connected by a second connecting pipe 94, which is used to allow the asphalt in the buffer component 5 to flow back into the mixing component 9. The mixing component 9 and the rotating shaft 12 are connected by a transmission component 10. The buffer component 5 is connected to the end of the rotating shaft 12 that is away from the drive motor 11.

[0026] The base plate 1 is equipped with a camera and a control system, which includes an image acquisition module, an analysis module, and a control module. The image acquisition module is used to acquire road surface image information captured by the camera as the target image. The analysis module is used to acquire the target image within the image acquisition module, calculate the target filling area within the target image, and generate a filling signal. The control module is used to acquire the filling signal and control the asphalt discharge rate of the pump body according to the filling signal. The camera captures images of the road surface and acquires road surface image information within a specified area as the target image. The volume within the target image is calculated to obtain the asphalt content required to fill the target image, and a filling signal is generated. Based on the filling signal, the asphalt discharge rate of the pump body is controlled, thereby controlling the asphalt discharge rate.

[0027] The control system also includes a flow monitoring module, which is used to obtain the asphalt inflow rate in the storage device and obtain the asphalt content in the storage device based on the asphalt inflow rate and the asphalt discharge rate in the control module. Using the flow control module, the asphalt content in the storage device is calculated based on the asphalt inflow rate and the asphalt discharge rate, and the asphalt inflow rate is controlled and adjusted according to the asphalt content to avoid the asphalt content in the storage device being too high, which would cause the asphalt to solidify, or the asphalt content in the storage device being too low, which would result in insufficient asphalt.

[0028] The storage device is equipped with sensors to detect the volume of asphalt within the device. It also includes a comparison module to acquire the asphalt volume and content, calculate the difference between them to obtain an error value, and set a preset threshold. The module compares the error value with the threshold; if the error value is less than the threshold, a normal signal is generated; if the error value is greater than the threshold, an abnormal signal is generated. A flow monitoring module acquires the theoretical asphalt content, and sensors acquire the actual asphalt volume. The difference between the two is compared with a preset threshold to obtain a normal or abnormal signal. A normal signal indicates that the difference between the theoretical and actual asphalt content is within a preset range, allowing for normal operation. An abnormal signal indicates that the difference between the theoretical and actual asphalt content is too large, potentially indicating asphalt leakage, requiring manual inspection.

[0029] pass Figure 1 As shown, the transmission assembly 10 includes a first pulley 101, a second pulley 103, and a belt 102. The first pulley 101 is disposed outside the rotating shaft 12 on the side of the fixed plate 2 facing the mixing tank 91. The second pulley 103 is disposed on the stirring roller 92 located outside the mixing tank 91. The belt 102 is sleeved on the first pulley 101 and the second pulley 103 to rotate the rotating shaft 12 and control the rotation of the stirring roller 92. The stirring mechanism includes the mixing tank 91 and the stirring roller 92 located inside the mixing tank 91. One end of the stirring roller 92 facing away from the fixed plate 2 is rotatably connected to the inner wall of one side of the mixing tank 91, and the other end passes through and extends to the outside of the mixing tank 91 and is rotatably connected to the fixed plate 2. The mixing tank 91 is also provided with a feed pipe 93 for feeding materials. The operator can fill the mixing tank 91 with the asphalt to be sprayed through the feed pipe 93, and then start the drive motor 11. The start of the drive motor 11 can drive its output shaft to rotate, which in turn can drive the rotating shaft 12 to rotate. The rotating shaft 12 can then drive the first pulley 101 to rotate, which in turn can drive the second pulley 103 to rotate through the belt 102. The rotation of the second pulley 103 can then drive the mixing roller 92 to rotate. The rotation of the mixing roller 92 in the mixing tank 91 can stir and push the asphalt that enters the mixing tank 91, so that the asphalt can enter the spreading component 6 through the first connecting pipe 8 during the stirring process.

[0030] pass Figure 1As shown, the spreading assembly 6 includes a spray head 64, a storage tank 61, and a hydraulic pump 62 installed in the storage tank 61. The storage tank 61 is connected to the mixing tank 91 through a first connecting pipe 8. The outlet of the hydraulic pump 62 is provided with an outlet pipe 63 that passes through and extends to the outside of the storage tank 61. The spray head 64 is located on the side of the base plate 1 facing the roller. The end of the outlet pipe 63 away from the hydraulic pump 62 passes through the base plate 1 and is connected to the spray head 64. When asphalt enters the spreading assembly 6, it will enter the storage tank 61. Then, by starting the hydraulic pump 62, the asphalt can be absorbed, and the asphalt will enter the outlet pipe 63 from the outlet of the hydraulic pump 62. Then, it will be sprayed onto the ground through the spray head 64 to spread the asphalt. When the asphalt stored in the storage tank 61 is too much and the storage tank 61 cannot hold it all, the asphalt will enter the buffer assembly 5 through the guide pipe 7.

[0031] pass Figure 1 , Figure 2 As shown, the buffer assembly 5 includes a buffer box 51, a reciprocating screw 52, ​​and a screw tube 53 that is sleeved on the outer ring of the reciprocating screw 52 and whose inner ring is threadedly engaged with the reciprocating screw 52. The reciprocating screw 52 is located inside the buffer box 51, with one end rotatably connected to the inner wall of the buffer box 51, and the other end penetrating through and extending out of the buffer box 51 to connect with the rotating shaft 12. The outer ring of the screw tube 53 is disposed with a pressing plate 54. A through hole 546 is provided on the pressing plate 54, and both sides of the through hole 546 are provided with a connection to the pressing plate 54. The fixed rod 541 is connected, and a movable plate 542 is sleeved on the fixed rod 541. A sealing plug 545 is provided on the side of the movable plate 542 facing the guide hole 546. A baffle 544 is also provided on the side of the fixed rod 541 away from the extrusion plate 54. A second elastic member 543 is sleeved on the fixed rod 541. The second member is located between the baffle 544 and the movable plate 542. The buffer box 51 is connected to the mixing box 91 through the second connecting pipe 94. The buffer box 51 is connected to the storage box 61 through the guide pipe 7.

[0032] When asphalt enters the buffer assembly 5 through the guide pipe 7, it enters the buffer tank 51. The reciprocating screw 52 inside the buffer tank 51, controlled by the rotation of the rotating shaft 12, controls the screw tube 53 to drive the extrusion plate 54 to move along the axis of the buffer tank 51. When the extrusion plate 54 moves towards the guide pipe 7, it extrudes the asphalt entering the buffer tank 51, increasing the internal pressure of the asphalt and extruding the movable rod. This causes the movable plate 542 to disengage the sealing plug 545 from the guide hole 546, simultaneously extruding the second elastic element 543 and generating elastic potential energy in it. If it is asphalt, it will enter the side of the extrusion plate 54 away from the guide pipe 7 through the guide hole 546. Due to the characteristics of the reciprocating screw 52, ​​the extrusion plate 54 can move in the opposite direction when it moves to the end of the reciprocating screw 52, ​​and then move to the side away from the guide pipe 7 to extrude the asphalt on the side of the extrusion plate 54 away from the guide pipe 7. At this time, under the action of the elastic potential energy of the second elastic element 543, the movable plate 542 can drive the sealing plug 545 to move into the guide hole 546 to block the guide hole 546, so that the extrusion plate 54 can extrude the asphalt through the second connecting pipe 94 and enter the mixing box 91 again for mixing.

[0033] pass Figure 1 As shown, a handle assembly 4 is also provided on the side of the fixed plate 2 facing the mounting plate. The handle assembly 4 includes a pull rod 41, a hand grip 42, and a first elastic member 43. One end of the pull rod 41 is hinged to the side of the mounting cavity away from the fixed plate 2, and the other end is connected to the hand grip 42. One end of the first elastic member 43 is hinged to the fixed plate 2, and the other end is slidably connected to the side of the pull rod 41 facing the fixed plate 2. A sliding groove is provided on the side of the pull rod 41 facing the fixed plate 2, and a slider is slidably connected in the sliding groove. The end of the first elastic member 43 away from the fixed plate 2 is hinged to the slider. When the operator holds the hand grip 42, the pull rod 41 can be rotated along the hinge, thereby driving the base plate 1 to move. At the same time, the first spring can be stretched, so that the first spring generates elastic potential energy, reducing the vibration of the hand grip 42 during the movement and improving the comfort of the user.

[0034] Working principle: First, the required asphalt is filled into the component through the feed pipe 93. The asphalt is stirred and transported by the mixing component 9, and then enters the spreading component 6 through the first connecting pipe 8. The hydraulic pump 62 in the spreading component 6 further sprays the asphalt onto the road surface. When the storage tank 61 in the spreading component 6 stores too much asphalt, it can enter the buffer component 5 through the guide pipe 7. The buffer component 5 then transports the excess asphalt back into the mixing component 9, thus preventing the spreading component 6 from becoming too pressurized due to excess asphalt, which could cause leakage or explosion of the storage tank 61, affecting workers and wasting asphalt.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A modified asphalt emulsion paving machine, comprising a base plate (1) with rolling wheels mounted on its bottom, characterized in that, A fixing plate (2) is provided on the side of the base plate (1) away from the rolling wheel. A mounting box (3) is provided on one side of the fixing plate (2). A drive motor (11) as a power source is provided in the mounting box (3). The output shaft of the drive motor (11) is coaxially connected to a rotating shaft (12). The end of the rotating shaft (12) away from the drive motor (11) passes through and extends to the side of the fixing plate (2) away from the mounting box (3). A number of support rods (13) connected to the base plate (1) are provided on the side of the fixing plate (2) away from the mounting box (3). A mixing assembly (9) is provided on the end of the support rods (13) away from the base plate (1). The mixing assembly (9) is used to control the mixing of asphalt. A spreading assembly (6) and a buffer assembly (5) are also provided on the base plate (1). The spreading assembly (6) and the buffer assembly (5) are located between the mixing assembly (9) and the base plate (1). The spreading assembly (6) and the mixing assembly (9) are connected by a first connecting pipe (8) to control the spraying of asphalt in the mixing assembly (9). The spreading assembly (6) and the buffer assembly (5) are connected by a guide pipe (7) to absorb excess asphalt in the spreading assembly (6). The buffer assembly (5) and the mixing assembly (9) are connected by a second connecting pipe (94) to allow the asphalt in the buffer assembly (5) to flow back into the mixing assembly (9). The mixing assembly (9) and the rotating shaft (12) are connected by a transmission assembly (10). The buffer assembly (5) is connected to the end of the rotating shaft (12) away from the drive motor (11). A camera is provided on the base plate (1), and a control system is also included. The control system includes an image acquisition module, an analysis module and a control module. The image acquisition module is used to acquire road surface image information captured by the camera as the target image; The analysis module is used to acquire the target image within the image acquisition module, calculate the target filling area within the target image, and generate a filling signal; The control module is used to acquire the filling signal and control the amount of asphalt discharged from the pump body according to the filling signal.

2. The modified asphalt emulsion paving machine according to claim 1, characterized in that, The control system also includes a flow monitoring module, which is used to obtain the asphalt inflow rate in the spreading assembly (6) and obtain the asphalt content in the spreading assembly (6) based on the asphalt inflow rate and the asphalt discharge in the control module.

3. The modified asphalt emulsion paving machine according to claim 2, characterized in that, The spreading assembly (6) is equipped with a sensor for detecting the volume of asphalt in the spreading assembly (6). It also includes a comparison module for obtaining the volume of asphalt and the asphalt content, calculating the difference between the volume of asphalt and the asphalt content to obtain an error value, and setting a threshold. The error value is compared with the threshold. If the error value is less than the threshold, a normal signal is generated. If the error value is greater than the threshold, an abnormal signal is generated.

4. The modified asphalt emulsion paving machine according to claim 1, characterized in that, The stirring assembly (9) includes a stirring tank (91) and a stirring roller (92) located inside the stirring tank (91). One end of the stirring roller (92) away from the fixed plate (2) is rotatably connected to the inner wall of one side of the stirring tank (91), and the other end extends through and out of the stirring tank (91) and is rotatably connected to the fixed plate (2). The stirring tank (91) is also provided with a feed pipe (93) for feeding materials.

5. A modified asphalt emulsion paving machine according to claim 4, characterized in that, The transmission assembly (10) includes a first pulley (101), a second pulley (103), and a belt (102). The first pulley (101) is disposed outside the rotating shaft (12) on the side of the fixed plate (2) facing the mixing tank (91). The second pulley (103) is disposed on the stirring roller (92) located outside the mixing tank (91). The belt (102) is sleeved on the first pulley (101) and the second pulley (103) so that the rotating shaft (12) rotates to control the rotation of the stirring roller (92).

6. A modified asphalt emulsion paving machine according to claim 4, characterized in that, The spreading assembly (6) includes a spray head (64), a storage tank (61), and a hydraulic pump (62) disposed in the storage tank (61). The storage tank (61) is connected to the mixing tank (91) through a first connecting pipe (8). The outlet of the hydraulic pump (62) is provided with a discharge pipe (63) that penetrates through and extends to the outside of the storage tank (61). The spray head (64) is disposed on the side of the base plate (1) facing the roller. The end of the discharge pipe (63) away from the hydraulic pump (62) passes through the base plate (1) and is connected to the spray head (64).

7. A modified asphalt emulsion paving machine according to claim 6, characterized in that, The buffer assembly (5) includes a buffer box (51), a reciprocating screw (52), and a screw tube (53) sleeved on the outer ring of the reciprocating screw (52) and whose inner ring is threadedly engaged with the reciprocating screw (52). The reciprocating screw (52) is located inside the buffer box (51), with one end rotatably connected to the inner wall of the buffer box (51) and the other end penetrating through and extending out of the buffer box (51) to connect with the rotating shaft (12). The outer ring of the screw tube (53) is set on the extrusion plate (54). The extrusion plate (54) has a through hole (546), and both sides of the through hole (546) are provided with fixing rods (541) connected to the extrusion plate (54). The fixed rod (541) is fitted with a movable plate (542), and the movable plate (542) is provided with a sealing plug (545) on the side facing the guide hole (546). The fixed rod (541) is also provided with a baffle (544) on the side away from the extrusion plate (54). The fixed rod (541) is fitted with a second elastic member (543), which is located between the baffle (544) and the movable plate (542). The buffer box (51) is connected to the mixing box (91) through the second connecting pipe (94), and the buffer box (51) is connected to the storage box (61) through the guide pipe (7).

8. A modified asphalt emulsion paving machine according to claim 1, characterized in that, The fixing plate (2) is also provided with a handle assembly (4) on the side facing the mounting box (3). The handle assembly (4) includes a pull rod (41), a hand grip (42) and a first elastic member (43). One end of the pull rod (41) is hinged to the side of the mounting box (3) away from the fixing plate (2), and the other end is connected to the hand grip (42). One end of the first elastic member (43) is hinged to the fixing plate (2), and the other end is slidably connected to the side of the pull rod (41) facing the fixing plate (2).

9. A modified asphalt emulsion paving machine according to claim 8, characterized in that, The pull rod (41) has a groove on the side facing the fixed plate (2), and a slider is slidably connected in the groove. The end of the first elastic member (43) away from the fixed plate (2) is hinged to the slider.

Images