A spraying device with an automatic nozzle displacement function for municipal road construction

Abstract

The present invention relates to the field of municipal road construction, and specifically to a spraying device with an automatic nozzle displacement function for municipal road construction, including a mobile base mechanism. A control mechanism is fixedly installed on the mobile base mechanism. A stirring mechanism is fixedly installed on the upper surface of the mobile base mechanism. A spraying mechanism is arranged on the outer side wall of the stirring mechanism. The double-headed driving motor can be driven to rise by the driving cylinder. At this time, the marking glue inside the stirring barrel can be stirred by the double-headed driving motor. When the nozzle needs to be adjusted, the double-headed driving motor can be driven to descend by the driving cylinder, so that the double-headed driving motor can drive the third annular block to rotate, thereby driving the third annular block and the spraying head to rotate 90° for direction adjustment, so that the fixed pipe and the connecting hole can be aligned with the discharge pipes in other directions, and then the marking glue in the stirring barrel can be injected into the spraying head for spraying operation.

Description

Technical Field

[0001] The present invention relates to the field of municipal road construction, and specifically relates to a spraying device with an automatic nozzle displacement function for municipal road construction. Background Art

[0002] Traffic markings mainly include lane center lines, lane demarcation lines, lane edge lines, and other markings such as crosswalk lines. A line marker is one of the equipment used in municipal road construction, and it is a road construction machine widely used in roads, parking lots, squares, and runways to draw different restrictive, guiding, and warning rules and limit signs on a flat ground.

[0003] However, the nozzles of existing line markers are generally fixed in position, so that when facing certain dead corners, the nozzles cannot be moved to the predetermined positions, resulting in the inability to spray the markings at one time and requiring manual secondary repair, which is inconvenient for people to use. Moreover, the movement of existing line markers is generally carried out through universal wheels, so that during the movement process, the markings are likely to shift due to the rotation of the universal wheels, and directly fixing the direction of the universal wheels will affect their direction adjustment. To solve the above problems, a spraying device with an automatic nozzle displacement function for municipal road construction is proposed. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a spraying device with an automatic nozzle displacement function for municipal road construction.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a spraying device with an automatic nozzle displacement function for municipal road construction, including a moving base mechanism, a control mechanism is fixedly installed on the moving base mechanism, a stirring mechanism is fixedly installed on the upper surface of the moving base mechanism, a spraying mechanism is arranged on the outer side wall of the stirring mechanism, a driving mechanism is fixedly installed on the upper surface of the moving base mechanism, and both ends of the driving mechanism are respectively abutted against the stirring mechanism and the spraying mechanism.

[0006] Specifically, the moving base mechanism includes a base, an installation groove is opened inside each of the four corners of the base, a bearing is fixedly installed at the notch of each of the four installation grooves, a first rotating rod is fixedly sleeved inside each of the four bearings, the lower ends of the four first rotating rods all penetrate and extend outside the base, a rotating groove is opened at the lower end of each of the four first rotating rods, a rotating shaft is fixedly installed between the groove walls of the four rotating grooves, a wheel is fixedly installed on each of the four rotating shafts, and the lower ends of the four wheels all penetrate and extend outside the first rotating rod.

[0007] Specifically, the upper ends of the four first rotating rods all penetrate and extend into the installation grooves and are fixedly sleeved with a rotating wheel. An installation cavity is respectively opened inside the base on one side of the four installation grooves. Four installation holes are commonly penetrated and opened between the four installation cavities and the four installation grooves. A mounting block is slidably connected in each of the four installation cavities. A spring is fixedly connected between the four mounting blocks and the installation cavities. A connecting rope is fixedly connected to the side wall of one side of each of the four mounting blocks. The four connecting ropes respectively penetrate through the spring, the installation holes in sequence and extend into the installation grooves and are fixedly connected to the rotating wheel.

[0008] Specifically, the control mechanism includes two support rods and an installation box. The two support rods are both fixedly connected to the side wall of one side of the base. The ends of the two support rods far away from the base are commonly fixedly connected with a cart handle. A controller is fixedly installed on the cart handle. The installation box is fixedly installed on the lower surface of the base. A storage battery is fixedly installed inside the installation box.

[0009] Specifically, the stirring mechanism includes a stirring barrel with an open upper end. The stirring barrel is fixedly installed on the upper surface of the base. A first annular block is sleeved on the outer side wall of the top end of the stirring barrel. A first annular groove is opened on the inner ring wall of the first annular block. A second annular block is fixedly sleeved on the outer side wall of the top end of the stirring barrel corresponding to the position of the first annular groove. The outer ring of the second annular block penetrates and extends into the first annular groove and is rotatably connected in the first annular groove. An installation rod is fixedly connected to the upper end of the first annular block. A second rotating rod is fixedly connected to the center of the lower end of the installation rod. The lower end of the second rotating rod penetrates and extends into the stirring barrel and is fixedly connected with a plurality of stirring rods.

[0010] Specifically, the spraying mechanism includes a second annular groove and a collection groove. The second annular groove is opened on the outer side wall of the stirring barrel. A third annular block is rotatably connected in the second annular groove. The outer ring of the third annular block penetrates and extends out of the stirring barrel and is fixedly connected with a fixed pipe. The end of the fixed pipe far away from the third annular block is fixedly connected with a spray head. The collection groove is opened at the inner bottom of the stirring barrel. Three discharge pipes are commonly penetrated and opened between the collection groove and the second annular groove. A connection hole is penetrated through the third annular block corresponding to the position of the fixed pipe. The orifice of the connection hole corresponds to the position of one of the discharge pipes. The three discharge pipes are arranged in a surrounding shape with respect to the collection groove. And a right angle is formed between each adjacent discharge pipe. An annular driving block is fixedly connected to the outer side of the third annular block.

[0011] Specifically, the driving mechanism includes a mounting frame fixedly installed on the upper surface of the base. A driving cylinder is fixedly installed on the mounting frame. The two output ends of the driving cylinder are jointly and movably connected to a piston rod. The upper end of the piston rod is fixedly connected to a fixing frame. A double-headed driving motor is fixedly installed on the fixing frame. The two output ends of the double-headed driving motor are fixedly connected to a driving rod through couplings respectively. One end of each of the two driving rods away from the double-headed driving motor is fixedly connected to a driving wheel. The lower end of the piston rod is fixedly connected to a fixing plate. A rubber pad is fixedly connected to the fixing plate. The rubber pad abuts against the outer side wall of the third annular block.

[0012] Specifically, a plurality of ball grooves are formed in the upper groove wall and the lower groove wall of the first annular groove. A ball is rotatably connected in each of the plurality of ball grooves. One end of each of the plurality of balls penetrates and extends into the first annular groove and abuts against the second annular block.

[0013] Advantages of the present invention:

[0014] (1) For the spraying device with an automatic nozzle displacement function for municipal road construction of the present invention, by setting the mobile base mechanism, control mechanism, stirring mechanism, spraying mechanism and driving mechanism, during use, the driving cylinder can be used to drive the double-headed driving motor to rise. At this time, the marking glue inside the stirring barrel can be stirred by the double-headed driving motor. When the nozzle needs to be adjusted, the driving cylinder can be used to drive the double-headed driving motor to descend, so that the double-headed driving motor can drive the third annular block to rotate, thereby driving the third annular block and the spraying head to rotate 90° for direction adjustment, so that the fixed pipe and the connection hole can be aligned with the discharge pipes in other directions. Furthermore, the marking glue in the stirring barrel can be injected into the spraying head for spraying operation.

[0015] (2) For the spraying device with an automatic nozzle displacement function for municipal road construction of the present invention, by setting the mobile base mechanism, control mechanism, stirring mechanism, spraying mechanism and driving mechanism, during use, the base can be pushed to roll on the ground through the wheels. When a linear movement is required, the spring will push the mounting block, and the mounting block will pull the rotating wheel through the connecting rope, so that the side of the rotating wheel connected to the connecting rope remains on the side close to the mounting cavity. Furthermore, when the cart is moving and there is no external force, it can keep straight and prevent the base from moving and deviating. When a turn is needed, the base can be directly pushed to one side, and the wheels drive the rotating wheel to rotate through the rotating rod and adjust the direction of the wheels. At the same time, the rotating wheel can wind up the connecting rope, so that after the turn is completed, the spring will pull the rotating wheel to reset and keep the wheels straight. Description of the Drawings

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 Schematic structural diagram of a spraying device with an automatic nozzle displacement function for municipal road construction provided by the present invention;

[0018] Figure 2 Schematic structural diagram of a mixing barrel of a spraying device with an automatic nozzle displacement function for municipal road construction provided by the present invention;

[0019] Figure 3 Schematic structural diagram of a third annular block of a spraying device with an automatic nozzle displacement function for municipal road construction provided by the present invention;

[0020] Figure 4 Schematic structural diagram of a driving mechanism of a spraying device with an automatic nozzle displacement function for municipal road construction provided by the present invention;

[0021] Figure 5 Schematic installation structure diagram of a first rotating rod of a spraying device with an automatic nozzle displacement function for municipal road construction provided by the present invention;

[0022] Figure 6 Schematic cross-sectional structure diagram of a first annular block of a spraying device with an automatic nozzle displacement function for municipal road construction provided by the present invention;

[0023] Figure 7 For a spraying device with an automatic nozzle displacement function for municipal road construction provided by the present invention Figure 1 Enlarged structural diagram of part A.

[0024] In the figure: 1. Moving base mechanism; 11. Base; 12. Installation groove; 13. Bearing; 14. First rotating rod; 16. Rotating shaft; 17. Wheel; 18. Rotating wheel; 19. Installation cavity; 110. Installation hole; 111. Installation block; 112. Spring; 113. Connecting rope; 2. Control mechanism; 21. Support rod; 22. Installation box; 23. Trolley handle; 24. Controller; 25. Battery; 3. Mixing mechanism; 31. Mixing barrel; 32. First annular block; 33. First annular groove; 34. Second annular block; 35. Installation rod; 36. Second rotating rod; 37. Mixing rod; 38. Ball groove; 39. Ball; 4. Spraying mechanism; 41. Second annular groove; 42. Third annular block; 43. Fixed pipe; 44. Spraying head; 45. Collection tank; 46. Drain pipe; 47. Connecting hole; 48. Driving block; 5. Driving mechanism; 51. Installation frame; 52. Driving cylinder; 53. Piston rod; 54. Fixed frame; 55. Double-headed driving motor; 56. Driving rod; 57. Driving wheel; 58. Fixed plate; 59. Rubber pad. Detailed implementation manners

[0025] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0026] As Figures 1-7 shown, a spraying device with an automatic nozzle displacement function for municipal road construction according to the present invention includes a moving base mechanism 1, a control mechanism 2 is fixedly installed on the moving base mechanism 1, a stirring mechanism 3 is fixedly installed on the upper surface of the moving base mechanism 1, a spraying mechanism 4 is arranged on the outer side wall of the stirring mechanism 3, a driving mechanism 5 is fixedly installed on the upper surface of the moving base mechanism 1, and both ends of the driving mechanism 5 are respectively abutted against the stirring mechanism 3 and the spraying mechanism 4.

[0027] Among them, the moving base mechanism 1 includes a base 11, installation grooves 12 are respectively opened inside the base 11 near the four corners, a bearing 13 is fixedly installed at the notch of each of the four installation grooves 12, a first rotating rod 14 is fixedly sleeved inside each of the four bearings 13, the lower ends of the four first rotating rods 14 all penetrate and extend outside the base 11, a rotating groove is opened at the lower end of each of the four first rotating rods 14, a rotating shaft 16 is fixedly installed between the groove walls of the four rotating grooves, a wheel 17 is fixedly installed on each of the four rotating shafts 16, and the lower ends of the four wheels 17 all penetrate and extend outside the first rotating rod 14.

[0028] Among them, the upper ends of the four first rotating rods 14 all penetrate and extend into the installation groove 12 and are fixedly sleeved with a rotating wheel 18, an installation cavity 19 is respectively opened inside the base 11 on one side of the four installation grooves 12, four installation holes 110 are jointly penetrated and opened between the four installation cavities 19 and the four installation grooves 12, a mounting block 111 is slidably connected inside each of the four installation cavities 19, a spring 112 is fixedly connected between the four mounting blocks 111 and the installation cavity 19, a connecting rope 113 is fixedly connected to the side wall of one side of each of the four mounting blocks 111, and the four connecting ropes 113 respectively penetrate through the spring 112, the installation hole 110 in sequence and extend into the installation groove 12 and are fixedly connected to the rotating wheel 18.

[0029] Among them, the control mechanism 2 includes two support rods 21 and an installation box 22, the two support rods 21 are both fixedly connected to the side wall of one side of the base 11, and a trolley handle 23 is jointly fixedly connected to the ends of the two support rods 21 far away from the base 11, a controller 24 is fixedly installed on the trolley handle 23, the installation box 22 is fixedly installed on the lower surface of the base 11, and a storage battery 25 is fixedly installed inside the installation box 22.

[0030] Among them, the stirring mechanism 3 includes a stirring barrel 31 with an open upper end. The stirring barrel 31 is fixedly installed on the upper surface of the base 11, and a first annular block 32 is sleeved on the outer side wall of the top end of the stirring barrel 31. A first annular groove 33 is formed on the inner annular wall of the first annular block 32. A second annular block 34 is fixedly sleeved on the outer side wall of the top end of the stirring barrel 31 corresponding to the position of the first annular groove 33. The outer ring of the second annular block 34 extends through and is rotatably connected in the first annular groove 33. The upper end of the first annular block 32 is fixedly connected with a mounting rod 35. The center of the lower end of the mounting rod 35 is fixedly connected with a second rotating rod 36. The lower end of the second rotating rod 36 extends through and is fixedly connected with a plurality of stirring rods 37 in the stirring barrel 31. The double-headed drive motor 55 can be started. The double-headed drive motor 55 drives the drive wheel 57 to rotate through the drive rod 56. The drive wheel 57 drives the first annular block 32 to rotate by abutting against the first annular block 32. The first annular block 32 rotates in place under the support of the second annular block 34 and the first annular groove 33. The first annular block 32 drives the second rotating rod 36 to rotate through the mounting rod 35. The second rotating rod 36 drives the stirring rods 37 to rotate. The stirring rods 37 stir the raw materials in the stirring barrel 31 and form marking glue.

[0031] Among them, the spraying mechanism 4 includes a second annular groove 41 and a collection groove 45. The second annular groove 41 is opened on the outer side wall of the stirring barrel 31. A third annular block 42 is rotatably connected in the second annular groove 41. The outer ring of the third annular block 42 extends through the stirring barrel 31 and is fixedly connected with a fixed pipe 43. One end of the fixed pipe 43 away from the third annular block 42 is fixedly connected with a spray head 44. The collection groove 45 is opened on the inner bottom of the stirring barrel 31. Three discharge pipes 46 are commonly opened through between the collection groove 45 and the second annular groove 41. A connection hole 47 is opened through the third annular block 42 corresponding to the position of the fixed pipe 43. The orifice of the connection hole 47 corresponds to the position of one of the discharge pipes 46. The three discharge pipes 46 are arranged in a surrounding shape with respect to the collection groove 45, and each adjacent discharge pipe 46 is arranged at a right angle. A driving block 48 arranged in a ring shape is fixedly connected to the outer side of the third annular block 42. The double-headed driving motor 55 can be started. The double-headed driving motor 55 drives the driving wheel 57 to rotate through the driving rod 56. The driving wheel 57 drives the third annular block 42 to rotate by abutting against the driving block 48, and the third annular block 42 drives the fixed pipe 43 and the spray head 44 to rotate, and the connection hole 47 on the third annular block 42 abuts against one of the discharge pipes 46, then the operation of the double-headed driving motor 55 is stopped, so that the marking glue in the stirring barrel 31 can be injected into the spray head 44 through the collection groove 45, the discharge pipe 46, the connection hole 47 and the fixed pipe 43 for spraying operation, and when it is necessary to adjust the direction of the spray head 44, the double-headed driving motor 55 can be started to drive it to rotate for adjustment, so as to facilitate its spraying operation at multiple positions.

[0032] Among them, the driving mechanism 5 includes a mounting frame 51 fixedly installed on the upper surface of the base 11. A driving cylinder 52 is fixedly installed on the mounting frame 51. The two output ends of the driving cylinder 52 are jointly movably connected with a piston rod 53. The upper end of the piston rod 53 is fixedly connected with a fixing frame 54. A double-headed driving motor 55 is fixedly installed on the fixing frame 54. The two output ends of the double-headed driving motor 55 are fixedly connected with a driving rod 56 through couplings respectively. One end of each of the two driving rods 56 away from the double-headed driving motor 55 is fixedly connected with a driving wheel 57. The lower end of the piston rod 53 is fixedly connected with a fixing plate 58. A rubber pad 59 is fixedly connected to the fixing plate 58. The rubber pad 59 abuts against the outer side wall of the third annular block 42. The driving cylinder 52 can be started. The driving cylinder 52 drives the double-headed driving motor 55, the driving rods 56 and the driving wheels 57 through the piston rod 53, and makes the driving wheels 57 rise to abut against the outer side wall of the first annular block 32. Then the driving cylinder 52 can be started. The driving cylinder 52 drives the double-headed driving motor 55, the driving rods 56 and the driving wheels 57 to descend through the piston rod 53, and makes the driving wheels 57 descend to abut against the outer side wall of the driving block 48. After the spraying head 44 is adjusted, the driving cylinder 52 can be started. The driving cylinder 52 drives the double-headed driving motor 55, the driving rods 56 and the driving wheels 57 to rise through the piston rod 53, and makes the driving wheels 57 rise to abut against the outer side wall of the first annular block 32. Then the double-headed driving motor 55 can be started to drive the stirring rod 37 to rotate in the stirring barrel 31 to prevent precipitation. At the same time, the driving cylinder 52 will drive the fixing plate 58 and the rubber pad 59 to rise through the piston rod 53, so that the rubber pad 59 abuts against the third annular block 42 to prevent it from rotating.

[0033] Among them, a plurality of ball grooves 38 are opened on both the upper groove wall and the lower groove wall of the first annular groove 33. A ball 39 is rotatably connected in each of the plurality of ball grooves 38. One end of each of the plurality of balls 39 penetrates and extends into the first annular groove 33 and abuts against the second annular block 34. The first annular block 32 can be supported by the second annular block 34 and the first annular groove 33, so that the first annular block 32 rotates in place. At the same time, when the first annular block 32 rotates, it can be supported by the balls 39, thereby reducing the friction force during its rotation.

[0034] During use, first, the operation of the device can be controlled by the controller 24. Then, the driving cylinder 52 can be started. The driving cylinder 52 drives the double-headed driving motor 55, the driving rod 56, and the driving wheel 57 to rise through the piston rod 53, and the driving wheel 57 rises to abut against the outer wall of the first annular block 32. At this time, raw materials can be injected into the mixing barrel 31. Then, the double-headed driving motor 55 can be started. The double-headed driving motor 55 drives the driving wheel 57 to rotate through the driving rod 56. The driving wheel 57 drives the first annular block 32 to rotate by abutting against the first annular block 32. The first annular block 32 rotates in place under the support of the second annular block 34 and the first annular groove 33. The first annular block 32 drives the second rotating rod 36 to rotate through the mounting rod 35. The second rotating rod 36 drives the stirring rod 37 to rotate. The stirring rod 37 stirs the raw materials in the mixing barrel 31 to form marking glue. Then, the driving cylinder 52 can be started. The driving cylinder 52 drives the double-headed driving motor 55, the driving rod 56, and the driving wheel 57 to descend through the piston rod 53, and the driving wheel 57 descends to abut against the outer wall of the driving block 48. At this time, the double-headed driving motor 55 can be started. The double-headed driving motor 55 drives the driving wheel 57 to rotate through the driving rod 56. The driving wheel 57 drives the third annular block 42 to rotate by abutting against the driving block 48, and the third annular block 42 drives the fixed pipe 43 and the spraying head 44 to rotate. After the connecting hole 47 on the third annular block 42 abuts against one of the discharge pipes 46, the operation of the double-headed driving motor 55 is stopped. Thus, the marking glue in the mixing barrel 31 can be injected into the spraying head 44 through the collecting groove 45, the discharge pipe 46, the connecting hole 47, and the fixed pipe 43 for spraying operations. And when it is necessary to adjust the direction of the spraying head 44, the double-headed driving motor 55 can be started to drive it to rotate for adjustment, thus facilitating its spraying operations at multiple positions. After the adjustment of the spraying head 44 is completed, the driving cylinder 52 can be started. The driving cylinder 52 drives the double-headed driving motor 55, the driving rod 56, and the driving wheel 57 to rise through the piston rod 53, and the driving wheel 57 rises to abut against the outer wall of the first annular block 32. Then, the double-headed driving motor 55 can be started to drive the stirring rod 37 to rotate in the mixing barrel 31 to prevent it from settling. At the same time, the driving cylinder 52 drives the fixing plate 58 and the rubber pad 59 to rise through the piston rod 53, so that the rubber pad 59 abuts against the third annular block 42 to prevent it from rotating, thus facilitating the position adjustment of the spraying head 44 and spraying operations in different directions.When the spraying head 44 is fixed, the support rod 21 can be pushed by the trolley handle 23, and the support rod 21 pushes the base 11, so that the wheels 17 roll on the ground to drive the base 11 to move. At this time, the spring 112 will push the mounting block 111, and the mounting block 111 will pull the rotating wheel 18 through the connecting rope 113, so that the side of the rotating wheel 18 connected to the connecting rope 113 remains on the side close to the installation cavity 19. Furthermore, the wheels 17 are kept in a straight-line driving state, so that during the movement of the device, it can maintain a straight line and prevent the base 11 from moving and deviating without external force. When it needs to turn, the base 11 can be directly pushed by the trolley handle 23 to turn. At this time, the wheels 17 will drive the rotating wheel 18 through the first rotating rod 14 to wind up the connecting rope 113 and pull the spring 112 so that it can turn. After the direction adjustment is completed, the rotating wheel 18, the first rotating rod 14 and the wheels 17 will be pulled back and kept in a straight line under the elasticity of the spring 112, so that the universal wheels will not easily deviate when in an adjustable state.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A spraying device with an automatic nozzle displacement function for municipal road construction, including a mobile base mechanism (1), characterized in that, A control mechanism (2) is fixedly installed on the movable base mechanism (1). A stirring mechanism (3) is fixedly installed on the upper surface of the movable base mechanism (1). A spraying mechanism (4) is arranged on the outer side wall of the stirring mechanism (3). A driving mechanism (5) is fixedly installed on the upper surface of the movable base mechanism (1). The two ends of the driving mechanism (5) are respectively abutted against the stirring mechanism (3) and the spraying mechanism (4). The movable base mechanism (1) includes a base (11). The stirring mechanism (3) includes a stirring barrel (31) with an open upper end. The stirring barrel (31) is fixedly installed on the upper surface of the base (11). A first annular block (32) is sleeved on the outer side wall of the top end of the stirring barrel (31). A first annular groove (33) is formed on the inner ring wall of the first annular block (32). A second annular block (34) is fixedly sleeved on the outer side wall of the top end of the stirring barrel (31) corresponding to the position of the first annular groove (33). The outer ring of the second annular block (34) extends through and is rotatably connected in the first annular groove (33). An installation rod (35) is fixedly connected to the upper end of the first annular block (32). A second rotating rod (36) is fixedly connected to the center of the lower end of the installation rod (35). The lower end of the second rotating rod (36) extends through and is fixedly connected to a plurality of stirring rods (37) in the stirring barrel (31). The spraying mechanism (4) includes a second annular groove (41) and a collection tank (45). The second annular groove (41) is formed on the outer side wall of the stirring barrel (31). A third annular block (42) is rotatably connected in the second annular groove (41). The outer ring of the third annular block (42) extends through and is fixedly connected to a fixed pipe (43) outside the stirring barrel (31). A spray head (44) is fixedly connected to the end of the fixed pipe (43) away from the third annular block (42). An annular driving block (48) is fixedly connected to the outer side of the third annular block (42). The collection tank (45) is formed on the inner bottom of the stirring barrel (31). Three discharge pipes (46) are commonly formed through between the collection tank (45) and the second annular groove (41). A connection hole (47) is formed through the third annular block (42) corresponding to the position of the fixed pipe (43). The orifice of the connection hole (47) corresponds to the position of one of the discharge pipes (46). The three discharge pipes (46) are arranged in a surrounding shape with respect to the collection tank (45), and each adjacent discharge pipe (46) is arranged at a right angle. The driving mechanism (5) includes a mounting frame (51), the mounting frame (51) is fixedly mounted on the upper surface of the base (11), a driving cylinder (52) is fixedly mounted on the mounting frame (51), the two output ends of the driving cylinder (52) are jointly and movably connected with a piston rod (53), the upper end of the piston rod (53) is fixedly connected with a fixing frame (54), a double-headed driving motor (55) is fixedly mounted on the fixing frame (54), the two output ends of the double-headed driving motor (55) are fixedly connected with a driving rod (56) through couplings respectively, one end of each of the two driving rods (56) far away from the double-headed driving motor (55) is fixedly connected with a driving wheel (57), the two driving wheels (57) are respectively abutted against the first annular block (32) and the driving block (48), the lower end of the piston rod (53) is fixedly connected with a fixing plate (58), a rubber pad (59) is fixedly connected to the fixing plate (58), and the rubber pad (59) is abutted against the outer side wall of the third annular block (42).

2. The spraying device with an automatic nozzle displacement function for municipal road construction according to claim 1, characterized in that: An installation groove (12) is respectively opened inside the base (11) near the four corners, a bearing (13) is fixedly mounted at the notch of each of the four installation grooves (12), a first rotating rod (14) is fixedly sleeved inside each of the four bearings (13), the lower ends of the four first rotating rods (14) all penetrate and extend outside the base (11), a rotating groove is opened at the lower end of each of the four first rotating rods (14), a rotating shaft (16) is fixedly mounted between the groove walls of the four rotating grooves, a wheel (17) is fixedly mounted on each of the four rotating shafts (16), and the lower ends of the four wheels (17) all penetrate and extend outside the first rotating rod (14).

3. A spraying device with an automatic nozzle displacement function for municipal road construction according to claim 2, characterized in that: The upper ends of the four first rotating rods (14) all penetrate and extend into the installation groove (12) and are fixedly sleeved with a rotating wheel (18), an installation cavity (19) is respectively opened inside the base (11) on one side of the four installation grooves (12), four installation holes (110) are jointly opened between the four installation cavities (19) and the four installation grooves (12), a mounting block (111) is slidably connected inside each of the four installation cavities (19), a spring (112) is jointly fixedly connected between the four mounting blocks (111) and the installation cavity (19), a connecting rope (113) is fixedly connected to the side wall of one side of each of the four mounting blocks (111), the four connecting ropes (113) respectively penetrate through the spring (112), the installation hole (110) in sequence and extend into the installation groove (12) and are fixedly connected to the rotating wheel (18).

4. A spraying device with an automatic nozzle displacement function for municipal road construction according to claim 1, characterized in that: The control mechanism (2) includes two support rods (21) and an installation box (22). Both of the two support rods (21) are fixedly connected to the side wall of one side of the base (11), and a cart handle (23) is fixedly connected to the ends of the two support rods (21) away from the base (11). A controller (24) is fixedly installed on the cart handle (23). The installation box (22) is fixedly installed on the lower surface of the base (11), and a storage battery (25) is fixedly installed in the installation box (22).

5. A spraying device with an automatic nozzle displacement function for municipal road construction according to claim 1, characterized in that: A plurality of ball grooves (38) are provided on both the upper groove wall and the lower groove wall of the first annular groove (33). A ball (39) is rotatably connected in each of the plurality of ball grooves (38). One end of each of the plurality of balls (39) penetrates and extends into the first annular groove (33) and abuts against the second annular block (34).

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