Highway bridge maintenance spraying device

Abstract

A highway bridge maintenance spraying device comprises a storage box, a contraction mechanism, a fixed spraying frame, telescopic spraying frames, a length adjusting mechanism, a water tank and a conveying mechanism, the contraction mechanism is arranged in the storage box, the fixed spraying frame is arranged below the contraction mechanism, and the two telescopic spraying frames are arranged on the two sides of the fixed spraying frame in an inserted mode; the length adjusting mechanism is arranged between the fixed spraying frame and the telescopic spraying frame, and the telescopic spraying frame horizontally slides along the fixed spraying frame through the length adjusting mechanism; the length adjusting mechanism comprises transverse frames and a first sliding block, the transverse frames are fixedly arranged on the two sides of the top face of the fixed spraying frame, the first sliding block is fixedly arranged on one side of the top face of the telescopic spraying frame, and the two ends of the first sliding block are inserted into the transverse frames and horizontally slide along the transverse frames. According to the spraying device, the transverse frame and the first sliding block are arranged, the telescopic spraying frame horizontally slides along the fixed spraying frame through matched use of the transverse frame and the first sliding block, then the spraying range can be adjusted according to the use environment, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridge construction equipment, and more specifically, particularly relates to a highway bridge maintenance spraying device. Background Art

[0002] Highway bridge engineering refers to all the work related to the planning, design, construction, maintenance, and repair of highway structures that cross water areas, valleys, and all traffic passages. During the construction of highway bridges, after the concrete pouring of the highway bridge is completed, in order to prevent the concrete from cracking, the poured concrete needs to be sprayed with water for maintenance.

[0003] The patent with authorization announcement number CN221029484U discloses a highway bridge maintenance spray device, including a frame, a water tank is arranged at the upper end of the frame, a water inlet and a water outlet are respectively arranged on the side and lower end face of the water tank, a spray mechanism is connected to the lower end face of the water outlet, a contraction mechanism is arranged on the side face of the frame, and the contraction mechanism is connected to the spray mechanism. This patent realizes control of the water mist nozzles at the lower end and on both sides by setting a diversion pipe and setting valves at the upper ends of the first diversion joint and the second diversion joint respectively. However, the length of the spray mechanism in this patent is fixed, and the spray range cannot be adjusted according to the use environment, and the applicability is low. Utility Model Content

[0004] The utility model aims to provide a highway bridge maintenance spraying device to overcome the problems of being unable to adjust the spraying range according to the use environment and having low applicability.

[0005] A highway bridge maintenance spray device comprises a storage box, a contraction mechanism, a fixed spray rack, a telescopic spray rack, a length adjustment mechanism, a water tank and a conveying mechanism, wherein the contraction mechanism is arranged inside the storage box, the fixed spray rack is arranged below the contraction mechanism, two telescopic spray racks are inserted at both sides of the fixed spray rack, the length adjustment mechanism is arranged between the fixed spray rack and the telescopic spray rack, and the telescopic spray rack slides horizontally along the fixed spray rack through the length adjustment mechanism, support columns are fixedly arranged at the four corners of the bottom surface of the water tank, the support columns are fixedly connected to the top surface of the storage box, and the conveying mechanism is arranged between the water tank, the fixed spray rack and the telescopic spray rack;

[0006] The length adjustment mechanism includes a transverse frame and a first slider. The transverse frame is fixedly arranged on both sides of the top surface of the fixed spray frame. The first slider is fixedly arranged on one side of the top surface of the telescopic spray frame. Both ends of the first slider are inserted into the transverse frame and slide horizontally along the transverse frame.

[0007] Furthermore, the length adjustment mechanism also includes a first threaded rod, which is inserted into the interior of the transverse frame and rotatably connected to the transverse frame. The first sliding block is sleeved on the first threaded rod and slides horizontally along the transverse frame through the first threaded rod.

[0008] Furthermore, a first groove is opened at one end of the transverse frame, one end of the first threaded rod passes through the first groove and a first motor for rotating the first threaded rod is fixedly arranged thereon.

[0009] Furthermore, the retraction mechanism includes a second slider, a first connecting ear plate, a connecting rod and a second connecting ear plate. A sliding groove is opened on the inner wall of the top end of the storage box. The top end of the second slider is inserted into the sliding groove and slides horizontally along the sliding groove. The first connecting ear plate is fixedly arranged at the bottom end of the second slider, and the second connecting ear plate is fixedly arranged on the top surface of the fixed spray rack. One end of the connecting rod is hinged to the first connecting ear plate, and the other end of the connecting rod is hinged to the second connecting ear plate.

[0010] Furthermore, the retracting mechanism also includes a second threaded rod, which is inserted into the slide groove and rotatably connected to the storage box. The second sliding block is sleeved on the second threaded rod and slides horizontally along the slide groove through the second threaded rod.

[0011] Furthermore, a second groove is opened inside the storage box near the slide groove, one end of the second threaded rod passes through the second groove and a second motor for rotating the second threaded rod is fixedly arranged.

[0012] Furthermore, the conveying mechanism includes a water pump, a shunt pipe, a first connecting pipe and a second connecting pipe. A water outlet is fixedly arranged on the bottom surface of the water tank, the water outlet is connected to the inside of the water tank, the top of the water pump is connected to the water outlet, the shunt pipe is fixedly arranged on the inner wall of the top of the storage box, a first connecting port is fixedly arranged on the top surface of the shunt pipe, the first connecting port is connected to the inside of the shunt pipe, the first connecting port passes through the storage box and is connected to the bottom end of the water pump, a second connecting port is fixedly arranged at the center position of the bottom surface of the shunt pipe, the second connecting port is connected to the inside of the shunt pipe, and the first connecting port is fixedly arranged on the bottom surface of the shunt pipe. The top of the tube is connected to the second connection port, a third connection port is fixedly arranged at the center position of the top surface of the fixed spray rack, the third connection port is connected to the interior of the fixed spray rack, the bottom end of the first connecting tube is connected to the third connection port, fourth connection ports are fixedly arranged at both ends of the bottom surface of the diversion tube, the fourth connection port is connected to the interior of the diversion tube, the top of the second connecting tube is connected to the fourth connection port, a fifth connection port is fixedly arranged at one end of the top surface of the telescopic spray rack, the fifth connection port is connected to the interior of the telescopic spray rack, and the bottom end of the second connecting tube is connected to the fifth connection port.

[0013] Furthermore, a water filling port is fixedly arranged on the top surface of the water tank, and the water filling port is connected with the interior of the water tank.

[0014] Furthermore, an insertion frame is fixedly arranged at the top of the water filling port, and a sealing door for closing the water tank is inserted in the insertion frame.

[0015] Furthermore, a mounting plate is fixedly provided on the side wall of the storage box.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] ① The highway bridge maintenance spray device provided by the utility model is provided with a transverse frame and a first slider, and the telescopic spray frame is used in cooperation between the transverse frame and the first slider to slide horizontally along the fixed spray frame, so that the spray range can be adjusted according to the use environment, thereby improving the applicability of the device.

[0018] ② The highway bridge maintenance spray device provided by the utility model is provided with a second slider and a connecting rod. The second slider and the connecting rod are used in cooperation to retract the fixed spray frame and the telescopic spray frame into the storage box, thereby preventing external factors from damaging the fixed spray frame and the telescopic spray frame and improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of the highway bridge maintenance spraying device.

[0021] Figure 2 It is a specific structural schematic diagram of the length adjustment mechanism in the utility model.

[0022] Figure 3 It is a specific structural schematic diagram of the contraction mechanism in the utility model.

[0023] In the figure: 1. storage box; 2. fixed spray rack; 3. telescopic spray rack; 4. water tank; 5. support column; 6. cross frame; 7. first slider; 8. first threaded rod; 9. first groove; 10. first motor; 11. second slider; 12. first connecting ear plate; 13. connecting rod; 14. second connecting ear plate; 15. slide groove; 16. second threaded rod; 17. second groove; 18. second motor; 19. water pump; 20. shunt pipe; 21. first connecting pipe; 22. second connecting pipe; 23. water outlet; 24. first connecting port; 25. second connecting port; 26. third connecting port; 27. fourth connecting port; 28. fifth connecting port; 29. ​​water filling port; 30. plug-in frame; 31. sealing door; 32. mounting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 As shown, a highway bridge maintenance spray device comprises a storage box 1, a contraction mechanism, a fixed spray frame 2, a telescopic spray frame 3, a length adjustment mechanism, a water tank 4 and a conveying mechanism, the contraction mechanism is arranged inside the storage box 1, the fixed spray frame 2 is arranged below the contraction mechanism, two telescopic spray frames 3 are inserted at both sides of the fixed spray frame 2, the length adjustment mechanism is arranged between the fixed spray frame 2 and the telescopic spray frame 3, and the telescopic spray frame 3 slides horizontally along the fixed spray frame 2 through the length adjustment mechanism, support columns 5 are fixedly arranged at the four corners of the bottom surface of the water tank 4, the support columns 5 are fixedly connected to the top surface of the storage box 1, and the conveying mechanism is provided. The conveying mechanism is arranged between the water tank 4, the fixed spray rack 2 and the telescopic spray rack 3. Specifically, a retracting mechanism is arranged inside the storage box 1, a fixed spray rack 2 is arranged below the retracting mechanism, two telescopic spray racks 3 are inserted on both sides of the fixed spray rack 2, a length adjustment mechanism is arranged between the fixed spray rack 2 and the telescopic spray rack 3, and the telescopic spray rack 3 slides horizontally along the fixed spray rack 2 through the length adjustment mechanism, support columns 5 are welded at the four corners of the bottom surface of the water tank 4, and the support columns 5 are welded to the top surface of the storage box 1, and a conveying mechanism is arranged between the water tank 4, the fixed spray rack 2 and the telescopic spray rack 3.

[0026] like Figure 2 As shown, the length adjustment mechanism includes a transverse frame 6 and a first slider 7. The transverse frame 6 is fixedly arranged on both sides of the top surface of the fixed spray frame 2, the first slider 7 is fixedly arranged on one side of the top surface of the telescopic spray frame 3, and both ends of the first slider 7 are inserted into the transverse frame 6 and slide horizontally along the transverse frame 6. Specifically, the transverse frame 6 is welded to both sides of the top surface of the fixed spray frame 2, the first slider 7 is welded to one side of the top surface of the telescopic spray frame 3, and both ends of the first slider 7 are inserted into the transverse frame 6 and slide horizontally along the transverse frame 6.

[0027] In the present invention, by setting the transverse frame 6 and the first slider 7, the telescopic spray frame 3 slides horizontally along the fixed spray frame 2 through the cooperation between the transverse frame 6 and the first slider 7, so that the spray range can be adjusted according to the use environment, thereby improving the applicability of the device.

[0028] The length adjustment mechanism also includes a first threaded rod 8, which is inserted into the interior of the transverse frame 6 and is rotatably connected to the transverse frame 6. The first slider 7 is sleeved on the first threaded rod 8 and slides horizontally along the transverse frame 6 through the first threaded rod 8. Specifically, the first threaded rod 8 is inserted into the interior of the transverse frame 6 and is rotatably connected to the transverse frame 6. Through holes are provided at both ends of the first slider 7. The first slider 7 is sleeved on the first threaded rod 8 through the through holes and slides horizontally along the transverse frame 6 through the first threaded rod 8.

[0029] A first groove 9 is provided at one end of the transverse frame 6, one end of the first threaded rod 8 passes through the first groove 9 and is fixedly provided with a first motor 10 for rotating the first threaded rod 8. Preferably, the first motor 10 has a self-locking function, which is specifically manifested in that a first groove 9 is provided at one end of the transverse frame 6, the first motor 10 is fixed inside the first groove 9 through a motor seat, and one end of the first threaded rod 8 passes through the first groove 9 and is connected and fixed to the output shaft of the first motor 10.

[0030] like Figure 3 As shown, the retracting mechanism includes a second slider 11, a first connecting ear plate 12, a connecting rod 13 and a second connecting ear plate 14. A slide groove 15 is provided on the inner wall of the top end of the storage box 1. The top end of the second slider 11 is inserted into the slide groove 15 and slides horizontally along the slide groove 15. The first connecting ear plate 12 is fixedly arranged at the bottom end of the second slider 11. The second connecting ear plate 14 is fixedly arranged on the top surface of the fixed spray rack 2. One end of the connecting rod 13 is hinged to the first connecting ear plate 12, and the other end of the connecting rod 13 is hinged to the second connecting ear plate 14. Specifically, It is manifested as a slide groove 15 being opened on the inner wall of the top end of the storage box 1, the top end of the second slider 11 is inserted in the slide groove 15 and slides horizontally along the slide groove 15, the first connecting ear plate 12 is welded to the bottom end of the second slider 11, a pin is inserted on the first connecting ear plate 12, one end of the connecting rod 13 is hinged to the first connecting ear plate 12 through the pin, the second connecting ear plate 14 is welded to the top surface of the fixed spray frame 2, a pin is inserted on the second connecting ear plate 14, and the other end of the connecting rod 13 is hinged to the second connecting ear plate 14 through the pin.

[0031] In the utility model, by setting the second slider 11 and the connecting rod 13, the second slider 11 and the connecting rod 13 are used in cooperation to retract the fixed spray rack 2 and the telescopic spray rack 3 into the storage box 1, thereby preventing external factors from damaging the fixed spray rack 2 and the telescopic spray rack 3 and improving the service life of the device.

[0032] The retraction mechanism also includes a second threaded rod 16, which is inserted into the slide groove 15 and is rotatably connected to the storage box 1. The second slider 11 is sleeved on the second threaded rod 16 and slides horizontally along the slide groove 15 through the second threaded rod 16. Specifically, the second threaded rod 16 is inserted into the slide groove 15 and is rotatably connected to the storage box 1. A through hole is opened on the second slider 11. The second slider 11 is sleeved on the second threaded rod 16 through the through hole and slides horizontally along the slide groove 15 through the second threaded rod 16.

[0033] A second groove 17 is opened inside the storage box 1 near the slide groove 15, one end of the second threaded rod 16 passes through the second groove 17 and is fixedly provided with a second motor 18 for rotating the second threaded rod 16. Preferably, the second motor 18 has a self-locking function, which is specifically manifested in that a second groove 17 is opened inside the storage box 1 near the slide groove 15, the second motor 18 is fixed inside the second groove 17 through a motor seat, and one end of the second threaded rod 16 passes through the second groove 17 and is connected and fixed to the output shaft of the second motor 18.

[0034] The conveying mechanism includes a water pump 19, a shunt pipe 20, a first connecting pipe 21 and a second connecting pipe 22. A water outlet 23 is fixedly arranged on the bottom surface of the water tank 4, and the water outlet 23 is connected to the inside of the water tank 4. The top of the water pump 19 is connected to the water outlet 23. The shunt pipe 20 is fixedly arranged on the inner wall of the top of the storage box 1. A first connecting port 24 is fixedly arranged on the top surface of the shunt pipe 20, and the first connecting port 24 is connected to the inside of the shunt pipe 20. The first connecting port 24 passes through the storage box 1 and is connected to the bottom end of the water pump 19. A second connecting port 25 is fixedly arranged at the center of the bottom surface of the shunt pipe 20, and the second connecting port 25 is connected to the inside of the shunt pipe 20. The top of the first connecting pipe 21 is connected to the second connecting port 25, a third connecting port 26 is fixedly provided at the center of the top surface of the fixed spray frame 2, and the third connecting port 26 is connected to the inside of the fixed spray frame 2, the bottom end of the first connecting pipe 21 is connected to the third connecting port 26, and fourth connecting ports 27 are fixedly provided at both ends of the bottom surface of the shunt pipe 20, and the fourth connecting port 27 is connected to the inside of the shunt pipe 20, the top of the second connecting pipe 22 is connected to the fourth connecting port 27, and a fifth connecting port 28 is fixedly provided at one end of the top surface of the telescopic spray frame 3, and the fifth connecting port 28 is connected to the inside of the telescopic spray frame 3, and the bottom end of the second connecting pipe 22 The water tank 4 is connected to the fifth connection port 28, specifically, the bottom surface of the water tank 4 is welded with a water outlet 23, the water outlet 23 is connected to the inside of the water tank 4, the top of the water pump 19 is connected to the water outlet 23, the shunt pipe 20 is welded to the top inner wall of the storage box 1, the top surface of the shunt pipe 20 is welded with a first connection port 24, the first connection port 24 is connected to the inside of the shunt pipe 20, the first connection port 24 passes through the storage box 1 and is connected to the bottom end of the water pump 19, the bottom surface center of the shunt pipe 20 is welded with a second connection port 25, the second connection port 25 is connected to the inside of the shunt pipe 20, the top of the first connection pipe 21 is connected to the second The third connection port 25 is connected, a third connection port 26 is welded at the center position of the top surface of the fixed spray frame 2, the third connection port 26 is connected to the interior of the fixed spray frame 2, the bottom end of the first connecting pipe 21 is connected to the third connection port 26, fourth connection ports 27 are welded at both ends of the bottom surface of the diverter pipe 20, the fourth connection port 27 is connected to the interior of the diverter pipe 20, the top of the second connecting pipe 22 is connected to the fourth connection port 27, a fifth connection port 28 is welded at one end of the top surface of the telescopic spray frame 3, the fifth connection port 28 is connected to the interior of the telescopic spray frame 3, and the bottom end of the second connecting pipe 22 is connected to the fifth connection port 28.

[0035] A water inlet 29 is fixedly provided on the top surface of the water tank 4 , and the water inlet 29 is connected to the inside of the water tank 4 . Specifically, the water inlet 29 is welded on the top surface of the water tank 4 , and the water inlet 29 is connected to the inside of the water tank 4 .

[0036] An insert frame 30 is fixedly provided at the top of the water filling port 29, and a sealing door 31 for closing the water tank 4 is inserted in the insert frame 30. Specifically, an insert frame 30 is welded to the top of the water filling port 29, and a sealing door 31 for closing the water tank 4 is inserted in the insert frame 30, and the sealing door 31 slides horizontally along the inside of the insert frame 30.

[0037] A mounting plate 32 is fixedly provided on the side wall of the storage box 1 . Specifically, the mounting plate 32 is welded on the side wall of the storage box 1 for mounting the device on the maintenance vehicle.

[0038] The working principle of the highway bridge maintenance spraying device in this embodiment is:

[0039] The staff installs the device on the maintenance vehicle through the mounting plate 32, the second motor 18 rotates the output shaft, the second threaded rod 16 rotates with the output shaft, the second slider 11 rotates with the second threaded rod 16 and slides horizontally along the slide groove 15, the first connecting ear plate 12 moves horizontally with the second slider 11, one end of the connecting rod 13 moves with the first connecting ear plate 12 and rotates along the first connecting ear plate 12, the other end of the connecting rod 13 rotates along the second connecting ear plate 14, the fixed spray frame 2 rotates vertically with the connecting rod 13 and extends out of the storage box 1, the first motor 10 rotates the output shaft, the first threaded rod 8 rotates with the output shaft, the first slider 7 rotates with the first threaded rod 8 and slides horizontally along the cross frame 6, the telescopic spray frame 3 slides horizontally along the fixed spray frame 2 with the first slider 7, the water pump 19 pumps water, and the water flows through the diversion pipe 20 into the first connecting pipe 21 and the second connecting pipe 22 and is sprayed from the fixed spray frame 2 and the telescopic spray frame 3 to perform the spraying work.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A highway bridge maintenance spraying device, characterized in that: The invention comprises a storage box (1), a contraction mechanism, a fixed spray rack (2), a telescopic spray rack (3), a length adjustment mechanism, a water tank (4) and a conveying mechanism, wherein the contraction mechanism is arranged inside the storage box (1), the fixed spray rack (2) is arranged below the contraction mechanism, two telescopic spray racks (3) are inserted on both sides of the fixed spray rack (2), the length adjustment mechanism is arranged between the fixed spray rack (2) and the telescopic spray rack (3), and the telescopic spray rack (3) slides horizontally along the fixed spray rack (2) through the length adjustment mechanism, support columns (5) are fixedly arranged at the four corners of the bottom surface of the water tank (4), and the support columns (5) are fixedly connected to the top surface of the storage box (1), and the conveying mechanism is arranged between the water tank (4), the fixed spray rack (2) and the telescopic spray rack (3); The length adjustment mechanism comprises a transverse frame (6) and a first slide block (7); the transverse frame (6) is fixedly arranged on both sides of the top surface of the fixed spray frame (2); the first slide block (7) is fixedly arranged on one side of the top surface of the telescopic spray frame (3); and both ends of the first slide block (7) are inserted into the transverse frame (6) and slide horizontally along the transverse frame (6).

2. A highway bridge maintenance spraying device according to claim 1, characterized in that: The length adjustment mechanism further comprises a first threaded rod (8), the first threaded rod (8) being inserted into the interior of the transverse frame (6) and being rotatably connected to the transverse frame (6), and the first sliding block (7) being sleeved on the first threaded rod (8) and sliding horizontally along the transverse frame (6) through the first threaded rod (8).

3. A highway bridge maintenance spraying device according to claim 2, characterized in that: A first groove (9) is formed at one end of the transverse frame (6); one end of the first threaded rod (8) passes through the first groove (9) and is fixedly provided with a first motor (10) for rotating the first threaded rod (8).

4. A highway bridge maintenance spraying device according to claim 1, characterized in that: The retracting mechanism comprises a second slider (11), a first connecting ear plate (12), a connecting rod (13) and a second connecting ear plate (14); a slide groove (15) is provided on the inner wall of the top end of the storage box (1); the top end of the second slider (11) is inserted into the slide groove (15) and slides horizontally along the slide groove (15); the first connecting ear plate (12) is fixedly arranged at the bottom end of the second slider (11); the second connecting ear plate (14) is fixedly arranged on the top surface of the fixed spray rack (2); one end of the connecting rod (13) is hinged to the first connecting ear plate (12); and the other end of the connecting rod (13) is hinged to the second connecting ear plate (14).

5. A highway bridge maintenance spraying device according to claim 4, characterized in that: The retracting mechanism also includes a second threaded rod (16), which is inserted into the slide groove (15) and is rotatably connected to the storage box (1), and the second sliding block (11) is sleeved on the second threaded rod (16) and slides horizontally along the slide groove (15) through the second threaded rod (16).

6. A highway bridge maintenance spraying device according to claim 5, characterized in that: A second groove (17) is provided inside the storage box (1) near the slide groove (15); one end of the second threaded rod (16) passes through the second groove (17) and is fixedly provided with a second motor (18) for rotating the second threaded rod (16).

7. A highway bridge maintenance spraying device according to claim 1, characterized in that: The conveying mechanism comprises a water pump (19), a shunt pipe (20), a first connecting pipe (21) and a second connecting pipe (22); a water outlet (23) is fixedly arranged on the bottom surface of the water tank (4); the water outlet (23) is communicated with the inside of the water tank (4); the top of the water pump (19) is connected to the water outlet (23); the shunt pipe (20) is fixedly arranged on the inner wall of the top of the storage box (1); a first connecting port (24) is fixedly arranged on the top surface of the shunt pipe (20); the first connecting port (24) is communicated with the inside of the shunt pipe (20); the first connecting port (24) passes through the storage box (1) and is connected to the bottom end of the water pump (19); a second connecting port (25) is fixedly arranged at the center position of the bottom surface of the shunt pipe (20); the second connecting port (25) is communicated with the inside of the shunt pipe (20); The top end of the first connecting pipe (21) is connected to the second connecting port (25); a third connecting port (26) is fixedly provided at the center position of the top surface of the fixed spray frame (2); the third connecting port (26) is communicated with the interior of the fixed spray frame (2); the bottom end of the first connecting pipe (21) is connected to the third connecting port (26); fourth connecting ports (27) are fixedly provided at both ends of the bottom surface of the diverter pipe (20); the fourth connecting port (27) is communicated with the interior of the diverter pipe (20); the top end of the second connecting pipe (22) is connected to the fourth connecting port (27); a fifth connecting port (28) is fixedly provided at one end of the top surface of the telescopic spray frame (3); the fifth connecting port (28) is communicated with the interior of the telescopic spray frame (3); the bottom end of the second connecting pipe (22) is connected to the fifth connecting port (28).

8. A highway bridge maintenance spraying device according to claim 7, characterized in that: A water injection port (29) is fixedly provided on the top surface of the water tank (4), and the water injection port (29) is communicated with the interior of the water tank (4).

9. A highway bridge maintenance spraying device according to claim 8, characterized in that: An insert frame (30) is fixedly arranged at the top of the water injection port (29), and a sealing door (31) for closing the water tank (4) is inserted in the insert frame (30).

10. A highway bridge maintenance spraying device according to claim 1, characterized in that: A mounting plate (32) is fixedly provided on the side wall of the storage box (1).

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