A road paving device for municipal road construction

Abstract

The present application relates to a road paving device for municipal road construction, and relates to the field of municipal road construction technology, which includes a frame, a material tank arranged on the frame, a scraping mechanism and a vibrating mechanism, and also includes a stirring assembly and a transmission assembly; the stirring assembly includes a stirring ring coaxially arranged in the material tank, and a plurality of stirring rings are arranged in the vertical direction, and the stirring ring is rotatably arranged in the material tank; the transmission assembly is arranged in the material tank, and is used to drive the stirring ring located below the raw material liquid level to rotate. The operation of the stirring ring can be intelligently adjusted according to the liquid level of the raw material in the material tank, so as to reduce the phenomenon of idling of the stirring ring, and the operation is simple and convenient, and energy can be greatly saved at the same time.

Description

Technical Field

[0001] The present application relates to the field of municipal road construction technology, and in particular to a road paving device for municipal road construction. Background Art

[0002] At present, municipal roads are mainly concrete roads or asphalt roads. During the construction process, road paving devices are used for road paving. The road paving device includes a frame, a material holding mechanism, a scraping mechanism and a vibrating mechanism arranged on the frame. The prepared concrete or asphalt raw materials are placed in the material holding mechanism. During the operation of the frame, the raw materials in the material holding mechanism are poured onto the ground. The scraping mechanism initially scrapes the raw materials flat, and finally the vibrating mechanism is used to flatten and compact the road surface.

[0003] In the related art, mixing of concrete or asphalt raw materials is carried out at a construction site. A mixing assembly is provided in a material containing mechanism. The mixing assembly includes a mixing rod provided in the material containing mechanism. The mixing rod rotates under the drive of a driving source to mix the raw materials to maintain the fluidity of the raw materials.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the existing stirring component is fixedly arranged in the material containing mechanism, and the stirring component cannot be intelligently adjusted according to the capacity of the raw materials in the material containing mechanism. When the raw materials in the material containing mechanism are small, the stirring rod is located above the raw materials and has no stirring effect on the raw materials, thereby resulting in a large energy consumption of the driving source. Summary of the invention

[0005] In order to save energy, the present application provides a road paving device for municipal road construction.

[0006] The present application provides a road paving device for municipal road construction, which adopts the following technical solution:

[0007] A road paving device for municipal road construction includes a frame, a material tank arranged on the frame, a scraping mechanism and a vibrating mechanism, and also includes:

[0008] A stirring assembly, the stirring assembly comprising a stirring ring coaxially arranged in the material tank, a plurality of stirring rings are arranged in a vertical direction, and the stirring rings are rotatably arranged in the material tank;

[0009] The transmission assembly is arranged in the material tank and is used to drive the stirring ring located below the raw material liquid level to rotate.

[0010] By adopting the above technical solution, the raw materials are added into the material tank, and the transmission component drives the stirring ring located below the raw material liquid level to rotate according to the liquid level of the raw materials in the material tank. The stirring ring rotates to form a vortex to stir the raw materials in the material tank, so that the operation of the stirring ring can be intelligently adjusted according to the liquid level of the raw materials in the material tank, thereby reducing the phenomenon of idling of the stirring ring. The operation is simple and convenient, and it can greatly save energy.

[0011] Optionally, the top of the material tank is open, a discharge port is provided on the bottom wall of the material tank, a receiving cavity is provided inside the bottom wall of the material tank, an active cavity is formed between the outer wall of the stirring ring and the inner wall of the material tank, and the active cavity is connected to the receiving cavity; the transmission assembly includes:

[0012] A telescopic rod, the telescopic rod being rotatably disposed at a connection point between the movable cavity and the accommodating cavity;

[0013] An elastic member, wherein the elastic member is rotatably disposed in the accommodating cavity, and the movable end of the telescopic rod is telescoped to different degrees under the action of the elastic member;

[0014] An abutment plate, wherein the abutment plate is fixedly arranged on the outer wall of the stirring ring, and the movable end of the telescopic rod abuts against the abutment plate arranged on the stirring ring below the raw material liquid level;

[0015] It also includes a driving assembly, which is used to drive the telescopic rod and the elastic member to rotate.

[0016] By adopting the above technical solution, the driving component drives the elastic part and the telescopic rod to rotate in the accommodating chamber, and then the elastic part applies different degrees of force to the telescopic rod according to different rotation speeds, thereby controlling the telescopic length of the movable end of the telescopic rod. When the movable end of the telescopic rod is extended to different heights, it abuts against the abutment plate provided on the corresponding stirring ring, thereby driving the corresponding stirring ring to rotate to stir the raw materials.

[0017] Optionally, the fixed end of the telescopic rod is filled with fluid, and a plurality of clearance grooves are provided on the side wall of the fixed end of the telescopic rod, wherein the clearance grooves are through grooves provided along the thickness direction of the side wall of the fixed end of the telescopic rod;

[0018] The elastic member includes a plurality of springs arranged in the accommodating cavity, the elastic coefficients of the plurality of springs are different, abutment blocks are arranged on one end of the plurality of springs close to the telescopic rod, and the plurality of abutment blocks are slidably connected in the corresponding give-way grooves.

[0019] By adopting the above technical solution, springs with different elastic coefficients move at a specific rotation speed of the driving component to squeeze the fluid in the fixed end of the telescopic rod, thereby controlling the extension length of the movable end of the telescopic rod, and then driving the corresponding stirring ring to rotate, which is simple and convenient to operate.

[0020] Optionally, the driving component includes:

[0021] A driving rod, the driving rod is coaxially arranged in the material tank, and a connecting rod is arranged at the bottom end of the driving rod;

[0022] A driving motor, wherein a mounting plate is disposed at the top of the material tank, and the driving motor is disposed on the mounting plate, and the driving motor is used to drive the driving rod to rotate around its own axis direction;

[0023] A fixed plate, the fixed plate is rotatably disposed on the side wall of the discharge port and is located in the accommodating cavity, the fixed plate is connected to the driving rod through the connecting rod, the plurality of springs are fixedly connected to the fixed plate, and the bottom of the fixed end of the telescopic rod is fixedly disposed on the fixed plate through a connecting plate.

[0024] By adopting the above technical solution, when the raw materials are stirred, the driving motor is started, the driving motor drives the driving rod to rotate, the driving rod drives the connecting rod to rotate, the connecting rod drives the slider to rotate in the slide groove, the fixed plate rotates in the accommodating cavity, the telescopic rod and the spring both rotate in the accommodating cavity, so that the telescopic rod can drive the corresponding stirring ring to rotate to stir the raw materials.

[0025] Optionally, a detection component is also included, which includes a liquid level sensor and a controller arranged on the side wall of the material tank, and the controller is electrically connected to the liquid level sensor and the drive motor. The controller responds to the liquid level signal emitted by the liquid level sensor and controls the working state of the drive motor.

[0026] By adopting the above technical solution, the rotation speed of the driving motor can be adjusted according to the liquid level signal detected by the liquid level sensor, and then the rotation of the stirring ring can be intelligently adjusted, which can save energy consumption.

[0027] Optionally, an elastic membrane is provided on the inner wall of each of the clearance grooves.

[0028] By adopting the above technical solution, while the abutment block can still squeeze the fluid inside the fixed end of the telescopic rod, the elastic membrane can reduce the leakage of the fluid from the fixed end of the telescopic rod.

[0029] Optionally, a stirring rod is horizontally arranged on the inner wall of each stirring ring.

[0030] By adopting the above technical solution, the arrangement of the stirring rod increases the contact area between the stirring ring and the raw material, so that the stirring ring has a better stirring effect on the raw material in the material tank.

[0031] Optionally, an annular slider is provided on the side wall of the fixed plate, and an annular slide groove for installing the slider is opened on the side wall of the discharge port, and the slide groove is a through groove opened along the side wall of the discharge port, and one end of the connecting rod away from the driving rod is fixed on the slider; a scraper is fixed on the slider, and the scraper is vertically arranged on the inner wall of the discharge port.

[0032] By adopting the above technical solution, when the slider rotates in the slide groove, it drives the scraper to rotate circumferentially, so that the scraper can scrape the raw materials accumulated on the side wall of the discharge port, reduce the blockage of the discharge port, and thus ensure the normal operation of the road paving device.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. Add the raw materials into the material tank. The transmission component drives the stirring ring located below the raw material liquid level to rotate according to the liquid level of the raw materials in the material tank. The stirring ring rotates to form a vortex to stir the raw materials in the material tank. Therefore, the operation of the stirring ring can be intelligently adjusted according to the liquid level of the raw materials in the material tank, reducing the phenomenon of idling of the stirring ring. The operation is simple and convenient, and it can greatly save energy.

[0035] 2. Springs with different elastic coefficients move at a specific speed of the drive assembly to squeeze the fluid in the fixed end of the telescopic rod, thereby controlling the extension length of the movable end of the telescopic rod, and then driving the corresponding stirring ring to rotate;

[0036] 3. The speed of the driving motor can be adjusted according to the liquid level signal detected by the liquid level sensor, and then the rotation of the stirring ring can be intelligently adjusted to save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of a road paving device for municipal road construction according to an embodiment of the present application;

[0038] Figure 2 This is a schematic diagram of the cross-sectional structure of the material tank of the embodiment of the present application;

[0039] Figure 3 This is a partial schematic diagram of a material tank according to an embodiment of the present application;

[0040] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0041] Figure 5 for Figure 3 A local enlarged schematic diagram of point B in the middle.

[0042] Description of reference numerals:

[0043] 1. Frame; 2. Material tank; 21. Material outlet; 22. Accommodating chamber; 23. Movable chamber; 24. Slide; 25. Mounting plate; 26. Fixed rod; 3. Scraping mechanism; 4. Vibrating mechanism; 5. Stirring assembly; 51. Stirring ring; 52. Stirring rod; 6. Transmission assembly; 61. Telescopic rod; 611. Giving groove; 612. Elastic membrane; 62. Elastic member; 621. Spring; 622. Abutment block; 63. Abutment plate; 64. Connecting plate; 7. Driving assembly; 71. Driving rod; 72. Driving motor; 73. Fixed plate; 731. Sliding block; 732. Scraper; 74. Connecting rod; 8. Detection assembly; 81. Liquid level sensor; 82. Controller. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-5 This application is described in further detail.

[0045] Reference Figure 1 and Figure 2 The embodiment of the present application discloses a road paving device for municipal road construction, including a frame 1, a material tank 2 fixedly arranged on the frame 1, a scraping mechanism 3, and a vibrating mechanism 4 rotatably arranged on the frame 1; it also includes a stirring component 5 and a transmission component 6; the stirring component 5 is rotatably arranged in the material tank 2 and stirs the raw materials, the transmission component 6 is arranged in the material tank 2 and is used to drive the stirring component 5 to rotate, thereby stirring the raw materials in the material tank 2; the raw materials stirred in the material tank 2 are poured onto the ground, the scraping mechanism 3 preliminarily scrapes the raw materials on the ground, and finally the vibrating mechanism 4 vibrates the scraped raw materials to complete the paving of the road.

[0046] Reference Figure 2 The material tank 2 is fixedly arranged on the vehicle frame 1. The material tank 2 is a cylindrical structure with an opening at the top and a discharge port 21 at the center of the bottom wall of the material tank 2. During the construction process, the raw materials are poured into the material tank 2 from the top, and after being stirred in the material tank 2, they are discharged through the discharge port 21 and poured onto the ground, and then the road surface is paved.

[0047] The bottom wall of the tank 2 is provided with a receiving chamber 22, and an active chamber 23 is formed between the outer wall of the stirring ring 51 and the inner wall of the tank 2, and the active chamber 23 is connected with the receiving chamber 22. A mounting plate 25 is fixedly provided on the top of the tank 2, and a fixing rod 26 is fixedly provided on the upper surface of the top of the receiving chamber 22, and the top end of the fixing rod 26 is fixedly connected with the mounting plate 25.

[0048] The stirring assembly 5 includes a stirring ring 51 and a stirring rod 52. The cross section of the stirring ring 51 is a circular ring structure, the stirring ring 51 is coaxially arranged in the material tank 2, and the stirring ring 51 is rotatably arranged on the inner wall of the material tank 2. There are several stirring rings 51 arranged in the material tank 2 along the vertical direction. In the present embodiment, there are three stirring rings 51 arranged in the material tank 2, and the three stirring rings 51 are of the same size and shape. The stirring ring 51 at the top is rotatably connected to the top of the material tank 2, and the stirring ring 51 at the bottom is rotatably connected to the bottom of the material tank 2, and the two adjacent stirring rings 51 are rotatably connected; a stirring rod 52 is fixedly arranged on the inner wall of each stirring ring 51, the stirring rod 52 is arranged horizontally, and there are multiple groups of stirring rods 52 arranged on the inner wall of the stirring ring 51 along the circumferential direction.

[0049] During the process of stirring the raw materials, the transmission assembly 6 drives the stirring ring 51 located below the raw material liquid level to rotate. The stirring ring 51 rotates to form a vortex to stir the raw materials in the material tank 2. At the same time, the setting of the stirring rod 52 increases the contact area between the stirring ring 51 and the raw materials, so that the stirring ring 51 has a better stirring effect on the raw materials in the material tank 2.

[0050] Reference Figure 2 and Figure 3 The transmission assembly 6 includes a telescopic rod 61 , an elastic member 62 and an abutment plate 63 .

[0051] The telescopic rod 61 is rotatably arranged at the connection point between the movable cavity 23 and the accommodating cavity 22. The fixed end of the telescopic rod 61 is filled with fluid, which may be gas, liquid or other flowable substances. A plurality of makeshift grooves 611 are provided on the side wall of the fixed end of the telescopic rod 61. The plurality of makeshift grooves 611 are arranged in a linear array along the vertical direction, and the makeshift grooves 611 are through grooves provided along the thickness direction of the side wall of the fixed end of the telescopic rod 61.

[0052] The elastic member 62 is rotatably disposed in the accommodating chamber 22. The elastic member 62 includes a plurality of springs 621 disposed in the accommodating chamber 22. The elastic coefficients of the plurality of springs 621 are different. The plurality of springs 621 are arranged in an array along the vertical direction in the accommodating chamber 22, and a contact block 622 is fixedly disposed on one end of each spring 621 close to the telescopic rod 61. In the present embodiment, three springs 621 are disposed, and the elastic coefficients of the three springs 621 gradually decrease from top to bottom. Accordingly, three clearance grooves 611 are opened on the side wall of the telescopic rod 61, and each of the contact blocks 622 is slidably connected to the inner wall of the corresponding clearance groove 611.

[0053] The abutment plate 63 is fixedly arranged on the outer wall of the stirring ring 51, and the abutment plate 63 is vertically arranged in the movable cavity 23, and a gap is left between the abutment plate 63 and the side wall of the material tank 2. The movable end of the telescopic rod 61 extends under the action of the elastic member 62 and abuts against the abutment plate 63 arranged on the stirring ring 51 below the raw material liquid level.

[0054] The device further comprises a driving assembly 7 which is arranged on the material tank 2 and is used for driving the telescopic rod 61 and the elastic member 62 to rotate.

[0055] During the raw material stirring process, the driving component 7 drives the spring 621 to rotate in the accommodating chamber 22. Under the action of centrifugal force, the spring 621 is stretched, and the abutment block 622 set at the end of the spring 621 moves in the direction away from the spring 621, that is, it enters the movable end of the telescopic rod 61 through the giving way groove 611. At this time, the fluid inside the movable end of the telescopic rod 61 is squeezed, and the movable end of the telescopic rod 61 is pushed upward, and the telescopic rod 61 is continuously rotated circumferentially under the action of the driving component 7, that is, the movable end of the telescopic rod 61 is continuously rotated circumferentially along the movable chamber 23. The movable end of the telescopic rod 61 abuts against the abutment plate 63 during the rotation, and then exerts a force on the abutment plate 63 to rotate the abutment plate 63, thereby driving the corresponding stirring ring 51 to rotate.

[0056] Among them, when the speed of the driving component 7 is the first speed, the spring 621 located at the bottom of the accommodating chamber 22, that is, the spring 621 with the smallest elastic coefficient, is stretched, and the corresponding abutment block 622 enters the fixed end of the telescopic rod 61. At this time, the movable end of the telescopic rod 61 extends to the first length, and the stirring ring 51 at the bottom of the tank 2 rotates; when the speed of the driving component 7 is the second speed (the second speed is greater than the first speed), the spring 621 located in the middle and below the accommodating chamber 22, that is, the spring 621 with a moderate elastic coefficient and a small elastic coefficient are all stretched, and the corresponding abutment block 622 enters the fixed end of the telescopic rod 61. At this time, the movable end of the telescopic rod 61 extends to the second length and abuts against the abutment plate 63 in the middle of the active chamber 23, and the stirring ring 51 in the middle of the material tank 2 rotates accordingly; when the speed of the driving component 7 is the third speed (the third speed is greater than the second speed), the springs 621 located at and below the top of the accommodating chamber 22, that is, the springs 621 with the largest, moderate and smallest elastic coefficients are all stretched, and the corresponding abutment block 622 enters the fixed end of the telescopic rod 61. At this time, the movable end of the telescopic rod 61 extends to the third length and abuts against the abutment plate 63 at the top of the active chamber 23, and the stirring ring 51 at the top of the material tank 2 rotates accordingly.

[0057] It should be noted that, in the present embodiment, the telescopic rod 61 is rotatably arranged at the connection point between the active chamber 23 and the accommodating chamber 22, and a portion of the telescopic rod 61 is located in the active chamber 23 and rotates in the active chamber 23. When the raw material enters the material tank 2, the driving assembly 7 is started, and the active end of the telescopic rod 61 extends to the first length. At this time, the telescopic rod 61 rotates, and the fixed end of the telescopic rod 61 abuts against the abutment plate 63 at the bottom of the active chamber 23, and drives the rotating ring at the bottom of the material tank 2 to rotate, thereby stirring the raw material.

[0058] Reference Figure 3and Figure 4 An elastic membrane 612 is fixedly disposed on the inner wall of each of the clearance grooves 611. The elastic membrane 612 is made of an elastic material such as rubber. The elastic membrane 612 seals the fixed end of the telescopic rod 61, and the abutment block 622 abuts against the outer surface of the elastic membrane 612. While the abutment block 622 can still squeeze the fluid inside the fixed end of the telescopic rod 61, the elastic membrane 612 can reduce the leakage of the fluid from the fixed end of the telescopic rod 61.

[0059] Reference Figure 2 and Figure 5 The driving assembly 7 includes a driving motor 72, a driving rod 71, a fixing plate 73 and a connecting rod 74. The driving rod 71 is coaxially arranged in the material tank 2; the driving motor 72 is fixedly arranged in the center of the mounting plate 25, and the driving motor 72 is used to drive the driving rod 71 to rotate around its own axis direction; the cross section of the fixing plate 73 is an arc-shaped structure, and an annular slider 731 is arranged on the side wall of the fixing plate 73, and an annular slide groove 24 for installing the slider 731 is opened on the side wall of the discharge port 21, and the slide groove 24 is a through groove opened along the side wall of the discharge port 21, and the fixing plate 73 is located in the accommodating cavity 22, and the ends of the plurality of springs 621 away from the telescopic rod 61 are fixedly installed on the fixing plate 73, and the bottom of the telescopic rod 61 is fixedly installed on the fixing plate 73 through the connecting plate 64; the connecting rod 74 is fixedly arranged at the bottom end of the driving rod 71, and the connecting rod 74 is arranged horizontally, and the end of the connecting rod 74 away from the driving rod 71 is fixedly arranged on the slider 731.

[0060] When the raw materials are stirred, the driving motor 72 is started, the driving motor 72 drives the driving rod 71 to rotate, the driving rod 71 drives the connecting rod 74 to rotate, and the connecting rod 74 drives the sliding block 731 to rotate in the sliding groove 24, so that the fixing plate 73 rotates in the accommodating chamber 22, and the telescopic rod 61 and the spring 621 both rotate in the accommodating chamber 22. When the rotation speed of the driving motor 72 is different, that is, when the driving motor 72 is at a first rotation speed, the movable end of the telescopic rod 61 extends to a first length, and the telescopic rod 61 abuts against the abutting plate 63 at the bottom of the accommodating chamber 22; when the driving motor 72 is at a second rotation speed, the movable end of the telescopic rod 61 extends to a second length and abuts against the abutting plate 63 in the middle of the accommodating chamber 22; when the driving motor 72 is at a third rotation speed, the movable end of the telescopic rod 61 extends to a third length and abuts against the abutting plate 63 at the top of the accommodating chamber 22; thus, by adjusting the rotation speed of the driving motor 72, the rotation of the stirring ring 51 can be intelligently adjusted, thereby saving energy consumption.

[0061] A scraper 732 is fixedly provided on one side of the slider 731 close to the connecting rod 74, and the scraper 732 is vertically provided on the side wall of the discharge port 21. The raw materials are discharged from the discharge port 21 after being stirred in the material tank 2. During the discharge process, the raw materials may accumulate on the side wall of the discharge port 21. As the use time increases, the discharge port 21 may be blocked; when the slider 731 rotates in the chute 24, the scraper 732 is driven to rotate circumferentially, so that the scraper 732 can scrape the raw materials accumulated on the side wall of the discharge port 21, reduce the blockage of the discharge port 21, and thus ensure the normal operation of the road paving device.

[0062] Reference Figure 2 , and also includes a detection component 8, which includes a liquid level sensor 81 and a controller 82. The liquid level sensor 81 is installed on the inner wall of the material tank 2 and is located at the top of the material tank 2. The liquid level sensor 81 detects the liquid level height of the raw material in the material tank 2; the controller 82 is installed on the outer wall of the material tank 2, and the controller 82 is electrically connected to the drive motor 72 and the liquid level sensor 81. The controller 82 receives the liquid level signal from the liquid level sensor 81 and controls the working state of the drive motor 72 according to the corresponding liquid level signal.

[0063] During the construction process, the liquid level sensor 81 detects the liquid level of the raw material in the material tank 2; when it is detected that the liquid level of the raw material is less than or equal to one third of the height of the material tank 2, the liquid level sensor 81 transmits the liquid level signal to the controller 82, and the controller 82 controls the drive motor 72 to run at the first speed; when the liquid level of the raw material in the material tank 2 is greater than one third of the height of the material tank 2 and less than or equal to two thirds of the height of the material tank 2, the controller 82 controls the drive motor 72 to run at the second speed; similarly, when the liquid level of the raw material in the material tank 2 is greater than two thirds of the height of the material tank 2, the controller 82 controls the drive motor 72 to run at the third speed; thereby, the speed of the drive motor 72 can be adjusted according to the liquid level signal detected by the liquid level sensor 81, and then the rotation of the stirring ring 51 can be intelligently adjusted, which can save energy consumption.

[0064] The implementation principle of a road paving device for municipal road construction in an embodiment of the present application is as follows: when paving a municipal road, first, the raw materials used are poured into the material tank 2, the liquid level sensor 81 detects the liquid level height of the raw materials in the material tank 2, and transmits the liquid level signal to the controller 82, the controller 82 controls the driving motor 72 to operate at a corresponding speed, and then drives the corresponding spring 621 to stretch, so that the corresponding abutment block 622 enters the fixed end of the telescopic rod 61, drives the movable end of the telescopic rod 61 to extend, and abuts against the abutment plate 63 provided on the corresponding stirring ring 51, so that the stirring ring 51 located below the raw material liquid level rotates to stir the raw materials in the material tank 2; on the ground where the stirred raw materials are poured, the scraping mechanism 3 preliminarily scrapes the raw materials on the ground; finally, the vibrating mechanism 4 vibrates the scraped raw materials, and the road paving is completed; by adjusting the speed of the driving motor 72, the rotation of the stirring ring 51 can be intelligently adjusted, thereby saving energy consumption, and the operation is simple and convenient.

[0065] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A road paving device for municipal road construction, comprising a frame (1), a material tank (2) arranged on the frame (1), a scraping mechanism (3) and a vibrating mechanism (4), characterized in that: Also includes: A stirring assembly (5), the stirring assembly (5) comprising a stirring ring (51) coaxially arranged in the material tank (2), a plurality of the stirring rings (51) being arranged in a vertical direction, and the stirring rings (51) being rotatably arranged in the material tank (2); a transmission assembly (6), the transmission assembly (6) being arranged in the material tank (2) and being used for driving the stirring ring (51) located below the raw material liquid level to rotate; The material tank (2) has an opening at the top, a material outlet (21) is provided on the bottom wall of the material tank (2), a receiving cavity (22) is provided inside the bottom wall of the material tank (2), an active cavity (23) is formed between the outer wall of the stirring ring (51) and the inner wall of the material tank (2), and the active cavity (23) is communicated with the receiving cavity (22); the transmission assembly (6) comprises: a telescopic rod (61), the telescopic rod (61) being rotatably disposed at a connection point between the movable cavity (23) and the accommodating cavity (22); an elastic member (62), the elastic member (62) being rotatably disposed in the accommodating cavity (22), and the movable end of the telescopic rod (61) being telescoped to different degrees under the action of the elastic member (62); an abutment plate (63), the abutment plate (63) being fixedly arranged on the outer wall of the stirring ring (51), and the movable end of the telescopic rod (61) abuts against the abutment plate (63) arranged on the stirring ring (51) below the raw material liquid level; It also includes a driving assembly (7), wherein the driving assembly (7) is used to drive the telescopic rod (61) and the elastic member (62) to rotate; The fixed end of the telescopic rod (61) is filled with fluid, and a plurality of clearance grooves (611) are provided on the side wall of the fixed end of the telescopic rod (61), wherein the clearance grooves (611) are through grooves provided along the thickness direction of the side wall of the fixed end of the telescopic rod (61); The elastic member (62) comprises a plurality of springs (621) arranged in the accommodating cavity (22), the elastic coefficients of the plurality of springs (621) being different, and abutment blocks (622) being arranged on one end of the plurality of springs (621) close to the telescopic rod (61), and the plurality of abutment blocks (622) being slidably connected to the corresponding clearance grooves (611).

2. A road paving device for municipal road construction according to claim 1, characterized in that: The driving assembly (7) comprises: A driving rod (71), the driving rod (71) being coaxially arranged in the material tank (2), and a connecting rod (74) being arranged at the bottom end of the driving rod (71); A driving motor (72), wherein a mounting plate (25) is provided at the top of the material tank (2), and the driving motor (72) is arranged on the mounting plate (25), and the driving motor (72) is used to drive the driving rod (71) to rotate around its own axis direction; A fixed plate (73), the fixed plate (73) is rotatably disposed on the side wall of the discharge port (21) and is located in the accommodating cavity (22), the fixed plate (73) is connected to the driving rod (71) via the connecting rod (74), the plurality of springs (621) are all fixedly connected to the fixed plate (73), and the bottom of the fixed end of the telescopic rod (61) is fixedly disposed on the fixed plate (73) via the connecting plate (64).

3. A road paving device for municipal road construction according to claim 2, characterized in that: The invention also comprises a detection component (8), wherein the detection component (8) comprises a liquid level sensor (81) and a controller (82) arranged on the side wall of the material tank (2), wherein the controller (82) is electrically connected to the liquid level sensor (81) and the drive motor (72), and the controller (82) responds to the liquid level signal emitted by the liquid level sensor (81) and controls the working state of the drive motor (72).

4. A road paving device for municipal road construction according to claim 1, characterized in that: An elastic membrane (612) is provided on the inner wall of each of the clearance grooves (611).

5. A road paving device for municipal road construction according to claim 1, characterized in that: A stirring rod (52) is horizontally arranged on the inner wall of each stirring ring (51).

6. A road paving device for municipal road construction according to claim 2, characterized in that: An annular sliding block (731) is arranged on the side wall of the fixed plate (73); an annular sliding groove (24) for mounting the sliding block (731) is provided on the side wall of the discharge port (21); the sliding groove (24) is a through groove provided along the side wall of the discharge port (21); one end of the connecting rod (74) away from the driving rod (71) is fixedly arranged on the sliding block (731); a scraper (732) is fixedly arranged on the sliding block (731); the scraper (732) is vertically arranged on the inner wall of the discharge port (21).

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