A municipal road paving device

Abstract

The present invention relates to the technical field of brick-laying devices, and discloses a municipal road brick-laying device, which includes a paving machine. Inside the paving machine, there is a brick-arranging wall fixedly arranged. In the brick-arranging area of the brick-arranging wall, there are brick-detecting convex mechanisms and brick-discarding mechanisms. One brick-detecting convex mechanism and one brick-discarding mechanism form a group and are aligned with each other. There are several groups. The brick-detecting convex mechanisms detect whether there are convex defects on the two walls of the bricks placed by the staff. The bricks with convex defects are discarded when passing through the area of the brick-discarding mechanisms. In the present invention, the staff continuously place the bricks on the brick-supporting plates of the brick-detecting convex mechanisms. The paving machine can continuously detect defects through several brick-detecting wall air bags, improving the overall work efficiency and avoiding the phenomena of brick misalignment and excessive gaps between adjacent bricks caused by using defective bricks for paving. It can accurately detect whether there are convex defects on the two walls of the bricks, ensuring that each brick used for paving meets the quality requirements.

Description

Technical Field

[0001] The present invention relates to the field of brick-laying devices, and more specifically, it relates to a municipal road brick-laying device. Background Art

[0002] The paving of many brick roads is often carried out manually, one brick at a time. Moreover, as roads are getting wider and wider nowadays, the requirement for the flatness of road paving is also getting higher and higher. The road surface to be paved is not only very large in area but also very difficult in terms of technology. First, an automatic brick-laying machine is used. An automatic brick-laying machine is a mechanical device for paving bricks on the ground such as sidewalks, residential areas, and garden squares. The automatic brick-laying machine for sidewalks can greatly improve the brick-laying efficiency and reduce the demand for manual labor.

[0003] The worker stacks the bricks neatly, and the automatic brick-laying machine moves along the route to be paved, so that the neatly stacked bricks automatically slide onto the ground.

[0004] However, when the worker manually stacks the bricks, there are raised defects on the two walls of some bricks. If the worker does not notice and uses the defective bricks for paving, it often leads to an uneven road surface after paving and misalignment of adjacent bricks, resulting in the problem of needing to rework and repair. For this reason, we propose a municipal road brick-laying device. Summary of the Invention

[0005] The present invention provides a municipal road brick-laying device to solve the technical problem that using defective bricks for paving in the related art often leads to an uneven road surface after paving and misalignment of adjacent bricks, resulting in the need for rework and repair.

[0006] The present invention provides a municipal road brick-laying device, which includes a paving machine. There are several brick-stacking areas on the paving machine. An oscillating wall is fixedly arranged inside the paving machine. An adjusting arm column is fixedly arranged above the oscillating wall. An adjustable width-limiting arm is arranged on the adjusting arm column. A brick-inspecting convex mechanism and a brick-discarding mechanism are arranged in the brick-oscillating area of the oscillating wall. One brick-inspecting convex mechanism and one brick-discarding mechanism form a group and are aligned with each other. There are several groups. The brick-inspecting convex mechanism detects whether there are raised defects on the two walls of the bricks placed by the worker. The bricks with raised defects are discarded when passing through the area of the brick-discarding mechanism.

[0007] The brick-inspecting convex mechanism includes a brick-supporting plate and a control member. Limiting plates are fixedly arranged on both sides of the upper wall of the brick-supporting plate. Several brick-inspecting wall air bags are fixedly arranged on the inner walls of the two limiting plates. Several brick-inspecting wall air bags are all connected to the control member. When the bricks with raised defects are placed between the two limiting plates, several brick-inspecting wall air bags cannot be fully squeezed, and the amount of gas entering the control member decreases. The control member controls the brick-supporting plate to shake.

[0008] The brick discarding mechanism includes a brick discarding plate and a releasing member. A second rotating column is fixedly arranged at one end of the brick discarding plate close to the brick supporting plate. A second rotating cylinder is rotatably arranged outside the second rotating column. A releasing member is movably arranged inside the second rotating column. The releasing member is connected to the control member. The brick with a convex flaw slides onto the brick discarding plate between the two limiting plates. By controlling the control member to make the releasing member work, under the gravity of the brick, the brick discarding plate rotates counterclockwise, and the brick with a convex flaw falls into the space below the brick placing wall.

[0009] Further, a first rotating column is fixedly arranged at one end of the brick supporting plate away from the brick discarding plate. A first torsion spring is fixedly arranged at both ends of the first rotating column. A first rotating cylinder is rotatably arranged outside the first rotating column. A first limiting opening is formed in the side wall of the first rotating cylinder. A first supporting plate is fixedly arranged below the first rotating cylinder, and the first supporting plate is fixedly connected to the paving machine.

[0010] Further, a second torsion spring is fixedly arranged at both ends of the second rotating column. A second limiting opening is formed in the side wall of the second rotating cylinder. A second supporting plate is fixedly arranged below the second rotating cylinder, and the second supporting plate is fixedly connected to the first supporting plate. The size of the second limiting opening is larger than that of the first limiting opening.

[0011] Further, a pressure receiving plate is slidably arranged inside the second rotating column. A pushing box is fixedly arranged above the pressure receiving plate. A limiting head penetrating through the second rotating column is arranged on the pushing box, and the limiting head is fixedly connected to the pressure receiving plate through a connecting column. The connecting column penetrates through the pushing box. A plurality of springs are fixedly arranged below the pressure receiving plate.

[0012] Further, a clamping groove is formed in the inner wall of the second rotating cylinder corresponding to the position of the limiting head. The upper wall of the limiting head is of an inclined structure.

[0013] Further, the control member includes a control box. A pressure charging cylinder is fixedly arranged in the upper space inside the control box. An air storage bag is fixedly arranged in the upper space inside the pressure charging cylinder. The wall thickness of the air storage bag gradually increases from top to bottom. The air inlet end of the air storage bag is fixedly connected with a return pipe. The air storage bag is communicated with a plurality of brick detecting wall air bags through the return pipe.

[0014] Further, an electromagnetic column is fixedly arranged in the lower space inside the pressure charging cylinder. The telescopic column of the electromagnetic column penetrates through the bottom plate of the pressure charging cylinder and the partition plate of the control box. A gas separating plate is fixedly arranged on the telescopic column of the electromagnetic column. An air charging port is formed inside the gas separating plate. A film is rotatably arranged at the air outlet end of the air charging port.

[0015] Further, a switch three is fixedly arranged on the side wall of the electromagnetic column. A sealing film is arranged below the switch three. A switch one and a switch two are fixedly arranged on the outer wall of the pressure charging cylinder. The switch one and the switch two are connected to the electromagnetic column through wires. The touch end of the switch one is close to the lower part of the air storage bag, and the touch end of the switch two is close to the upper part of the air storage bag.

[0016] Further, an electromagnet is fixedly arranged in the lower space inside the control box, a liquid storage box is fixedly arranged above the electromagnet, an extrusion plate parallel to the electromagnet is arranged above the liquid storage box, and the extrusion plate is attracted to the electromagnet during operation. Switch three is connected to the electromagnet through a wire.

[0017] Further, a liquid filling pipe is connected to the air outlet end of the extrusion plate, a shaking wire is fixedly arranged on the side wall of the extrusion plate, the end of the shaking wire far away from the control box is fixedly connected to the lower wall of the brick supporting plate, and the end of the liquid filling pipe far away from the control box is connected to the releasing member.

[0018] The beneficial effects of the present invention are as follows:

[0019] In the present invention, the staff continuously place bricks on the brick supporting plate of the brick detecting convex mechanism. The paving machine can continuously detect defects through a number of brick detecting wall air bags, improving the overall working efficiency, avoiding the phenomena of brick dislocation and excessive gaps between adjacent bricks caused by using defective bricks for paving, being able to accurately detect whether there are convex defects on both walls of the bricks, ensuring that each brick used for paving meets the quality requirements, reducing the link of manual brick screening, and reducing the errors caused by human factors.

[0020] The brick discarding mechanism is closely matched with the brick detecting convex mechanism. Once the brick detecting convex mechanism detects convex defects on both walls of the brick, when the brick slides down to the brick discarding mechanism, the brick discarding plate of the brick discarding mechanism will immediately open to discard the defective brick. This immediate detection and screening mechanism ensures that only qualified bricks are used for paving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall structural schematic diagram of the present invention;

[0022] Figure 2 is the three-dimensional structural schematic diagram of the brick placing wall of the present invention;

[0023] Figure 3 is the structural schematic diagram of the positional relationship between the brick discarding plate and the brick discarding plate of the present invention;

[0024] Figure 4 is the structural schematic diagram of the first and second rotating cylinders of the present invention;

[0025] Figure 5 is the structural schematic diagram of the second rotating column of the present invention;

[0026] Figure 6 is the structural schematic diagram of the first rotating column of the present invention;

[0027] Figure 7 is the structural schematic diagram of the limiting head of the present invention;

[0028] Figure 8 is the structural schematic diagram of the control box of the present invention;

[0029] Figure 9 is a schematic structural diagram of the pressure charging cylinder of the present invention;

[0030] Figure 10 is a schematic internal structure diagram of the brick wall measuring airbag of the present invention;

[0031] Figure 11 is a schematic connection structure diagram of the brick wall measuring airbag and the control box of the present invention;

[0032] Figure 12 is a schematic connection structure diagram of the liquid filling pipe of the present invention.

[0033] In the figure: 11, paver; 12, brick stacking area; 13, width limiting arm; 14, arm adjusting column; 15, brick placing wall; 2, brick measuring convex mechanism; 21, brick supporting plate; 22, limiting plate; 23, brick wall measuring airbag; 24, first supporting plate; 25, first rotating cylinder; 26, first limiting port; 27, first rotating column; 28, first torsion spring; 29, return pipe; 3, brick discarding mechanism; 31, brick discarding plate; 32, second supporting plate; 33, second rotating column; 34, second torsion spring; 35, second rotating cylinder; 36, second limiting port; 41, control box; 42, liquid filling pipe; 43, electromagnet; 44, liquid storage box; 45, extrusion plate; 46, pressure charging cylinder; 47, film; 48, first switch; 49, air storage bag; 401, second switch; 402, electromagnetic column; 403, third switch; 404, air separation plate; 405, air inlet; 406, pulling and shaking wire; 51, limiting head; 52, pushing box; 53, pressure receiving plate. Detailed implementation manners

[0034] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0035] As Figure 1 and Figure 2As shown, a municipal road paving device includes a paver 11. There are several brick stacking areas 12 on the paver 11. Inside the paver 11, a brick placing wall 15 is fixedly arranged. Above the brick placing wall 15, an adjustable arm column 14 is fixedly arranged. An adjustable width-limiting arm 13 is arranged on the adjustable arm column 14. A brick detecting convex mechanism 2 and a brick discarding mechanism 3 are arranged in the brick placing area of the brick placing wall 15. One brick detecting convex mechanism 2 and one brick discarding mechanism 3 form a group and are aligned with each other. There are several groups. The brick detecting convex mechanism 2 detects whether there are convex defects on the two walls of the bricks placed by the workers. The bricks with convex defects are discarded when passing through the area of the brick discarding mechanism 3;

[0036] As Figure 1 - Figure 3 , Figure 8 and Figure 12 As shown, the brick detecting convex mechanism 2 includes a brick supporting plate 21 and a control member. On both sides of the upper wall of the brick supporting plate 21, limiting plates 22 are fixedly arranged. On the inner walls of the two limiting plates 22, several brick detecting wall air bags 23 are fixedly arranged. Several brick detecting wall air bags 23 are all connected to the control member. The bricks with convex defects are placed between the two limiting plates 22. Several brick detecting wall air bags 23 cannot be all squeezed, and the amount of gas entering the control member decreases. The control member controls the brick supporting plate 21 to vibrate;

[0037] The brick discarding mechanism 3 includes a brick discarding plate 31 and a releasing member. One end of the brick discarding plate 31 close to the brick supporting plate 21 is fixedly provided with a second rotating column 33. An outer rotating cylinder 35 is rotatably arranged outside the second rotating column 33. A releasing member is movably arranged inside the second rotating column 33. The releasing member is connected to the control member. The bricks with convex defects slide from between the two limiting plates 22 onto the brick discarding plate 31. The control member controls the releasing member to work. Under the gravity of the bricks, the brick discarding plate 31 rotates counterclockwise. The bricks with convex defects fall into the space below the brick placing wall 15.

[0038] The workers continuously place the bricks on the brick supporting plate 21 of the brick detecting convex mechanism 2. The paver 11 can continuously detect defects through several brick detecting wall air bags 23, improving the overall work efficiency, avoiding the phenomenon of brick misalignment and excessive gaps between adjacent bricks caused by using defective bricks for paving, being able to accurately detect whether there are convex defects on the two walls of the bricks, ensuring that each brick used for paving meets the quality requirements, reducing the link of manual brick screening, and reducing the errors caused by human factors;

[0039] The brick discarding mechanism 3 closely cooperates with the brick detecting convex mechanism 2. Once the brick detecting convex mechanism 2 detects convex defects on the two walls of the bricks, when the bricks slide down to the brick discarding mechanism 3, the brick discarding plate 31 of the brick discarding mechanism 3 will immediately open to discard the defective bricks. This immediate detection and screening mechanism ensures that only qualified bricks are used for paving.

[0040] As Figure 4- Figure 6 and Figure 12 As shown in Figure 6 and Figure 12 , at one end of the brick supporting plate 21 away from the brick discarding plate 31, a first rotating column 27 is fixedly arranged. At both ends of the first rotating column 27, a first torsion spring 28 is fixedly arranged. An outer part of the first rotating column 27 is rotatably provided with a first rotating cylinder 25. A first limiting opening 26 is formed in a side wall of the first rotating cylinder 25. Below the first rotating cylinder 25, a first supporting plate 24 is fixedly arranged, and the first supporting plate 24 is fixedly connected with the paver 11.

[0041] At both ends of the second rotating column 33, a second torsion spring 34 is fixedly arranged. A second limiting opening 36 is formed in a side wall of the second rotating cylinder 35. Below the second rotating cylinder 35, a second supporting plate 32 is fixedly arranged, and the second supporting plate 32 is fixedly connected with the first supporting plate 24. The size of the second limiting opening 36 is larger than that of the first limiting opening 26.

[0042] A pressure receiving plate 53 is slidably arranged inside the second rotating column 33. Above the pressure receiving plate 53, a pushing box 52 is fixedly arranged. A limiting head 51 penetrating through the second rotating column 33 is arranged on the pushing box 52, and the limiting head 51 and the pressure receiving plate 53 are fixedly connected through a connecting column. The connecting column penetrates through the pushing box 52. Below the pressure receiving plate 53, a plurality of springs are fixedly arranged.

[0043] At a position of an inner wall of the second rotating cylinder 35 corresponding to the limiting head 51, a clamping groove is formed. An upper wall of the limiting head 51 is of an inclined structure.

[0044] The staff inserts the bricks on the brick stacking area 12 into the two limiting plates 22 one by one. If there are raised defects on the side wall of this brick, the side wall of the brick cannot all contact the six air bags 23 for measuring the brick walls. The air in the air bags 23 for measuring the brick walls being squeezed flows into the control part. Through the control part, the brick supporting plate 21 vibrates within the size of the first limiting opening 26, so that the defective bricks in the two limiting plates 22 automatically slide down onto the brick discarding plate 31;

[0045] When the defective bricks slide onto the brick discarding plate 31, the liquid in the control part flows into the pushing box 52, causing the pushing box 52 to expand. Through the expansion of the pushing box 52, the pressure receiving plate 53 is pushed to slide downward. Through the pressure receiving plate 53, the limiting head 51 is pulled back into the second rotating column 33. At this time, under the gravity of the bricks, the brick discarding plate 31 rotates counterclockwise by 90° with the second rotating column 33 as the center, and the bricks with raised defects automatically fall into the space below the brick placing wall 15;

[0046] After the bricks with raised defects automatically fall into the space below the brick placing wall 15, the brick discarding plate 31 is driven by the rebounding force of the two second torsion springs 34 to rotate clockwise by 90° for resetting;

[0047] If the two walls of the brick inserted between the two limiting plates 22 have no convex flaws, the brick automatically slides onto the waste brick plate 31. At this time, the limiting head 51 has not retracted into the second rotating column 33, and the waste brick plate 31 does not rotate, so the brick continues to slide downwards.

[0048] As Figure 7 - Figure 10 and Figure 11 shown, the control member includes a control box 41. In the upper space inside the control box 41, a pressure charging cylinder 46 is fixedly arranged. In the upper space inside the pressure charging cylinder 46, an air storage bag 49 is fixedly arranged, and the wall thickness dimension of the air storage bag 49 gradually increases from top to bottom. The air inlet end of the air storage bag 49 is fixedly connected with a return pipe 29, and the air storage bag 49 is interconnected with a plurality of brick wall measuring air bags 23 through the return pipe 29.

[0049] In the lower space inside the pressure charging cylinder 46, an electromagnetic column 402 is fixedly arranged, and the telescopic column of the electromagnetic column 402 penetrates through the bottom plate of the pressure charging cylinder 46 and the partition plate of the control box 41. A gas separation plate 404 is fixedly arranged on the telescopic column of the electromagnetic column 402. An air inflation port 405 is opened inside the gas separation plate 404, and a film 47 is rotatably arranged at the air outlet end of the air inflation port 405.

[0050] A switch three 403 is fixedly arranged on the side wall of the electromagnetic column 402. A sealing and expanding sheet is arranged below the switch three 403. A switch one 48 and a switch two 401 are fixedly arranged on the outer wall of the pressure charging cylinder 46. The switch one 48 and the switch two 401 are connected to the electromagnetic column 402 through wires, and the touch end of the switch one 48 is close to the lower part of the air storage bag 49, and the touch end of the switch two 401 is close to the upper part of the air storage bag 49.

[0051] An electromagnet 43 is fixedly arranged in the lower space inside the control box 41. An liquid storage box 44 is fixedly arranged above the electromagnet 43. An extrusion plate 45 parallel to the electromagnet 43 during operation is arranged above the liquid storage box 44, and the extrusion plate 45 is attracted to the electromagnet 43 during operation. The switch three 403 is connected to the electromagnet 43 through a wire.

[0052] The air outlet end of the extrusion plate 45 is connected with a liquid charging pipe 42. A pulling and shaking wire 406 is fixedly arranged on the side wall of the extrusion plate 45. The end of the pulling and shaking wire 406 far away from the control box 41 is fixedly connected to the lower wall of the brick supporting plate 21. The end of the liquid charging pipe 42 far away from the control box 41 is connected to the releasing member.

[0053] When the worker inserts the brick into the two limit plates 22, if there are raised defects on the two walls of the brick, the air in the brick wall airbag 23 is squeezed, and the air flows into the air storage bag 49 through the return pipe 29. Since the wall thickness of the air storage bag 49 gradually increases from top to bottom, the upper part of the air storage bag 49 expands first, so that the air storage bag 49 squeezes the touch end of the switch two 401, controls the electromagnetic column 402 to work through the switch two 401, and makes the telescopic column of the electromagnetic column 402 stretch and contract repeatedly. Each time the telescopic column of the electromagnetic column 402 extends, it pushes down the extrusion plate 45 once, pulls the shaking line 406 through the extrusion plate 45, makes the shaking line 406 pull the brick supporting plate 21 to rotate downward, and then under the elasticity of the torsion spring one 28, makes the brick supporting plate 21 reset. Therefore, the reciprocating shaking of the brick supporting plate 21 is beneficial to the sliding of the brick;

[0054] And when the brick supporting plate 21 shakes, it drives the brick to shake. If the bumps on the two walls of the brick are not firm, there is a possibility of shaking off the bumps under the shaking, reducing the possibility of misjudgment;

[0055] If there are no raised defects on the two walls of the brick, the air in all six brick wall airbags 23 is squeezed into the air storage bag 49. At this time, the bottom of the air storage bag 49 also expands, and through the expansion of the bottom of the air storage bag 49, it contacts the touch end of the switch one 48 to control the electromagnetic column 402 to stop shaking;

[0056] When the telescopic column of the electromagnetic column 402 stretches and contracts multiple times, the air isolation plate 404 slides up and down reciprocally. Each time the air isolation plate 404 slides down, the air below the air isolation plate 404 enters above the air isolation plate 404 through the air inlet 405. At this time, the air above the air isolation plate 404 is blocked by the film 47 and enters quickly and exits slowly. As the air above the air isolation plate 404 increases, the sealed expansion piece gradually expands until it squeezes the switch three 403. Controls the electromagnet 43 to work through the switch three 403, adsorbs the extrusion plate 45 through the work of the electromagnet 43, thereby squeezes the liquid storage box 44, makes the liquid flow into the pushing box 52 through the liquid filling pipe 42, and controls the release part to work.

[0057] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation manners. The above specific implementation manners are only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A municipal road brick paving device, comprising a paver (11), the paver (11) being provided with a plurality of brick stacking areas (12), a brick placing wall (15) being fixedly arranged inside the paver (11), an adjusting arm column (14) being fixedly arranged above the brick placing wall (15), and an adjustable width limiting arm (13) being arranged on the adjusting arm column (14), characterized in that: The brick placing area of ​​the brick placing wall (15) is provided with a brick measuring convex mechanism (2) and a brick discarding mechanism (3); The brick measuring convex mechanism (2) comprises a brick supporting plate (21) and a control member, both sides of the upper wall of the brick supporting plate (21) are fixedly provided with limit plates (22), the inner walls of the two limit plates (22) are fixedly provided with a plurality of brick measuring wall air bags (23), and the plurality of brick measuring wall air bags (23) are connected to the control member, and when a brick with a protruding defect is placed between the two limit plates (22), the plurality of brick measuring wall air bags (23) cannot be completely squeezed, and the amount of gas entering the control member is reduced, and the brick supporting plate (21) is controlled to vibrate by the control member; The brick discarding mechanism (3) comprises a brick discarding plate (31) and a release member. A second rotating column (33) is fixedly provided at one end of the brick discarding plate (31) close to the brick supporting plate (21). A release member is movably provided inside the second rotating column (33). The brick with the protruding defect slides from between the two limiting plates (22) onto the brick discarding plate (31). The control member controls the release so that the brick discarding plate (31) rotates counterclockwise, and the brick with the protruding defect falls into the space below the brick placing wall (15). A rotating column (27) is fixedly provided at one end of the brick supporting plate (21) away from the discarding brick plate (31), and torsion springs (28) are fixedly provided at both ends of the rotating column (27). A rotating drum (25) is rotatably provided outside the rotating column (27), and a limiting opening (26) is provided on the side wall of the rotating drum (25). A supporting plate (24) is fixedly provided below the rotating drum (25), and the supporting plate (24) is fixedly connected to the paver (11). A rotating drum (35) is rotatably provided outside the rotating column (33); Torsion springs (34) are fixedly arranged at both ends of the second rotating column (33), a limiting opening (36) is provided on the side wall of the second rotating cylinder (35), a supporting plate (32) is fixedly arranged below the second rotating cylinder (35), and the supporting plate (32) is fixedly connected to the first supporting plate (24), and the size of the limiting opening (36) is larger than the size of the limiting opening (26).

2. A municipal road paving device according to claim 1, characterized in that: A pressure plate (53) is slidably arranged inside the rotating column (33), a push box (52) is fixedly arranged above the pressure plate (53), a limit head (51) penetrating the rotating column (33) is arranged above the push box (52), and the limit head (51) and the pressure plate (53) are fixedly connected via a connecting column, the connecting column passes through the push box (52), and a plurality of springs are fixedly arranged below the pressure plate (53).

3. A municipal road paving device according to claim 2, characterized in that: A slot is provided on the inner wall of the second rotating drum (35) at a position corresponding to the limit head (51), and the upper wall of the limit head (51) is an inclined structure.

4. A municipal road paving device according to claim 1, characterized in that: The control component comprises a control box (41), a pressure cylinder (46) is fixedly arranged in the upper space inside the control box (41), an air storage bag (49) is fixedly arranged in the upper space inside the pressure cylinder (46), and the wall thickness of the air storage bag (49) gradually increases from top to bottom, an air inlet end of the air storage bag (49) is fixedly connected to a return pipe (29), and the air storage bag (49) is interconnected with a plurality of brick wall air bags (23) through the return pipe (29).

5. A municipal road paving device according to claim 4, characterized in that: An electromagnetic column (402) is fixedly arranged in the lower space inside the pressure cylinder (46), and the telescopic column of the electromagnetic column (402) penetrates the bottom plate of the pressure cylinder (46) and the partition plate of the control box (41), and an air baffle plate (404) is fixedly arranged on the telescopic column of the electromagnetic column (402), and an air inlet (405) is opened inside the air inlet (404), and a film (47) is rotatably arranged at the air outlet end of the air inlet (405).

6. A municipal road paving device according to claim 5, characterized in that: A switch three (403) is fixedly provided on the side wall of the electromagnetic column (402), a sealing film is provided below the switch three (403), and a switch one (48) and a switch two (401) are fixedly provided on the outer wall of the pressure charging cylinder (46), the switch one (48) and the switch two (401) are connected to the electromagnetic column (402) through a wire, and the touch end of the switch one (48) is close to the lower part of the air storage bag (49), and the touch end of the switch two (401) is close to the upper part of the air storage bag (49).

7. A municipal road paving device according to claim 6, characterized in that: An electromagnet (43) is fixedly disposed in the lower space inside the control box (41), a liquid storage box (44) is fixedly disposed above the electromagnet (43), an extrusion plate (45) parallel to the electromagnet (43) is disposed above the liquid storage box (44), and the extrusion plate (45) and the electromagnet (43) are attracted to each other when in operation, and the switch three (403) is connected to the electromagnet (43) via a wire.

8. A municipal road paving device according to claim 7, characterized in that: The air outlet end of the extrusion plate (45) is connected to a liquid filling pipe (42), a pulling and shaking wire (406) is fixedly arranged on the side wall of the extrusion plate (45), one end of the pulling and shaking wire (406) away from the control box (41) is fixedly connected to the lower wall of the brick supporting plate (21), and one end of the liquid filling pipe (42) away from the control box (41) is connected to a release member.

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