Road maintenance spraying mechanism for roads, bridges and tunnels

By designing a combination of water supply, clamping, filtering, and levering mechanisms, the problem of traditional spraying mechanisms being unable to be quickly replaced is solved, enabling rapid adaptation and convenient disassembly and assembly of spraying components, thus improving road maintenance efficiency.

CN223646989UActive Publication Date: 2025-12-09HEILONGJIANG HONGQIANG ENG QUALITY TESTING CO LTD
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Patent Information

Application Number
CN202423266663.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-12-09
Estimated Expiration
2034-12-27

AI Technical Summary

Technical Problem

Traditional road maintenance spraying systems have fixed-length spray pipes, making them difficult to replace quickly and unable to adapt to roads of different widths.

Method used

A road maintenance spraying mechanism for bridges and tunnels has been designed, comprising a water supply mechanism, a tee pipe, a clamping mechanism, a drive mechanism, a filtration mechanism, and a lever mechanism. The clamping mechanism and the drive mechanism work together to enable quick replacement of the spraying components; the filtration mechanism is used to filter impurities in the water; and the lever mechanism facilitates disassembly and assembly.

Benefits of technology

It enables quick replacement and sealed connection of spraying components, adapts to different road widths, avoids nozzle clogging, simplifies disassembly and assembly steps, and improves spraying efficiency and convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a road maintenance spraying mechanism for roads, bridges and tunnels. The top end of the three-way pipe is connected with the water supply mechanism, and the left end and the right end of the three-way pipe are each sleeved with a detachable spraying assembly; the clamping mechanism is used for pressing the spraying assembly so that the spraying assembly can abut against the three-way pipe; the driving mechanism is connected with the clamping mechanism, and a knob is arranged at the input end of the driving mechanism; the filtering mechanism is arranged in the spraying assembly, and one end of the filtering mechanism is in threaded connection with the spraying assembly; and the pulling mechanism is accommodated in one end of the filtering mechanism. The spraying assembly is clamped on the three-way pipe through the clamping mechanism, meanwhile, the clamping mechanism is connected with the driving mechanism, the clamping mechanism can be driven by rotating a rotary knob on the driving mechanism, the clamping mechanism is loosened or clamped, only the rotary knob needs to be rotated in the spraying assembly replacement process, and the replacement, disassembly and assembly operation steps are simplified.
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Description

Technical Field

[0001] This utility model relates to the field of road maintenance, and in particular to a road maintenance spraying mechanism for roads, bridges and tunnels. Background Technology

[0002] Road maintenance spraying for roads, bridges, and tunnels is an important maintenance measure. By spraying water, dust on the road can be washed away, dust can be reduced and suppressed, and the road surface can be cooled to prevent damage to the road surface material due to high temperature.

[0003] Traditional road maintenance spraying equipment is usually mounted on vehicles and sprays the road surface while the vehicle is in motion. However, in actual spraying operations, the width of roads varies in different sections, while the length of the spraying pipes is generally fixed and they are usually flanged and fixed with multiple screws. This makes it difficult to disassemble and replace spraying pipes of different lengths, and thus it is not easy to quickly adapt to the maintenance spraying of roads of different widths. Utility Model Content

[0004] This utility model provides a road maintenance spraying mechanism for roads, bridges, and tunnels to solve the technical problem of the difficulty in quickly replacing spraying pipe fittings.

[0005] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0006] This utility model provides a road maintenance spraying mechanism for roads, bridges, and tunnels, including a water supply mechanism; it also includes: a tee pipe, the top end of which is connected to the water supply mechanism, and detachable spraying components are fitted on both the left and right ends of the tee pipe; a clamping mechanism for pressing the spraying components so that the spraying components abut against the tee pipe; a driving mechanism connected to the clamping mechanism, and a knob provided at the input end of the driving mechanism; a filtering mechanism disposed inside the spraying components, and one end of the filtering mechanism is threadedly connected to the spraying components; and a lever mechanism retracted into one end of the filtering mechanism.

[0007] In this technical solution, a clamping mechanism is used to hold the spraying component on the three-way pipe. At the same time, the clamping mechanism is connected to the drive mechanism. By rotating the knob on the drive mechanism, the clamping mechanism can be driven to loosen or tighten. This simplifies the replacement and disassembly process by simply turning the knob during the replacement of the spraying component.

[0008] Preferably, the water supply mechanism includes a water tank and a water pump; the water inlet of the water pump is connected to the water tank through an inlet pipe, the water outlet of the water pump is connected to an outlet pipe, and the outlet pipe is connected to the top of a three-way pipe; the top of the water tank is provided with a liquid filling port, and a sealing cap is provided on the liquid filling port.

[0009] In this technical solution, the water supply mechanism is used to supply water to the three-way pipe, through which the water enters the spraying assembly.

[0010] Preferably, the system also includes a carrier frame, wherein the water pump and the water tank are both fixedly installed on the top surface of the carrier frame, and mounting brackets are fixedly installed at the four corners of the bottom surface of the carrier frame, and mounting holes are provided on the mounting brackets.

[0011] In this technical solution, a mounting bracket is used for fixed installation on an external vehicle.

[0012] Preferably, the spraying assembly includes a circular tube, with a plurality of first nozzles evenly spaced along the length of the bottom of the circular tube, the inner wall of one end of the circular tube being connected to the outer wall of the end of the tee pipe, and a retaining ring being seamlessly welded to the inner wall of the circular tube; a pressure seat is fixedly installed on the outer wall of the end of the circular tube near the tee pipe.

[0013] In this technical solution, the round tube of the spraying component is matched with the port of the tee pipe, and the spraying component is pressed against the tee pipe by the clamping mechanism, and the retaining ring and the second sealing gasket provide a seal for the connection.

[0014] Preferably, a second sealing gasket is provided on both the left and right end faces of the three-way pipe, and the second sealing gasket abuts against the retaining ring; a second nozzle is installed at the bottom of the three-way pipe.

[0015] In this technical solution, the second nozzle is used for spraying below the three-way pipe.

[0016] Preferably, the clamping mechanism includes a fixed frame, screws, nuts, guide sleeves, guide posts, and pressure blocks; two screws with opposite thread directions are rotatably installed inside the fixed frame, each screw is threaded with a nut, the nut is fixedly connected to a pressure block, the pressure block presses against the pressure seat, the nut is fixedly connected to a guide sleeve, the guide sleeve is fitted with a guide post, and the guide post is arranged parallel to the screws, with one end of the guide post fixedly connected to the fixed frame.

[0017] In this technical solution, the clamping mechanism presses the spraying assembly against the end of the tee pipe.

[0018] Preferably, the drive mechanism includes a housing, a worm gear, a worm wheel, and a rotating shaft; the housing is fixedly connected to the outer wall of the tee pipe, the housing is fixedly connected to the fixing frame, the rotating shaft is rotatably installed inside the housing, the worm wheel is also provided inside the housing, the worm wheel is fixedly sleeved with the rotating shaft, the worm wheel is meshed with the worm gear, and the worm gear is rotatably installed inside the housing, the two ends of the rotating shaft are respectively fixedly connected to the ends of two screws, one end of the worm gear is fixedly connected to a knob, and the knob is located outside the housing, and the knob is provided with a ring of anti-slip texture.

[0019] In this technical solution, the drive mechanism provides drive for the clamping mechanism.

[0020] Preferably, the filtration mechanism includes a head and a filter screen cylinder. The head is fixedly connected to one end of the filter screen cylinder, and the head is threadedly connected to the end of the round tube away from the tee pipe. A first sealing gasket is provided on the head, and the outer wall of the filter screen cylinder is fitted and connected to the inner wall of the round tube.

[0021] In this technical solution, a filter screen is used to filter water, preventing impurities and sand from entering the nozzle.

[0022] Preferably, the actuating mechanism includes an actuating rod, and a storage groove is provided inside the end cap, with the actuating rod slidably installed into the storage groove.

[0023] Preferably, a magnetic block is fixedly installed at one end of the storage slot inside the end cap, one end of the lever is magnetically connected to the magnetic block, and the other end of the lever extends to the outside of the opening end of the storage slot. A stop block is fixedly connected to the inner wall of the opening end of the storage slot, and a sliding groove is opened on the rod surface of the lever along the length direction. The stop block is slidably connected to the sliding groove.

[0024] In this technical solution, the lever can extend or retract within the end cap. During use, it extends and is operated by lever to facilitate tightening or loosening the filter mechanism.

[0025] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0026] The positive and progressive effects of this utility model are as follows:

[0027] The aforementioned road maintenance spraying mechanism for bridges and tunnels supplies water to the spraying components via a water supply system, which then perform road maintenance spraying operations. The spraying components are clamped in place by a clamping mechanism, which is connected to a drive mechanism, which in turn connects to a knob. When replacing spraying components of different lengths to fit roads of varying widths, simply turning the knob activates the clamping mechanism, allowing for easy clamping or unclamping of the spraying components. This simplifies replacement and disassembly. Furthermore, a filtration mechanism is included to filter the water entering the spraying components, preventing impurities from entering the nozzles and causing blockages. The filtration mechanism is threaded into the spraying components, and a lever mechanism facilitates easy threading during replacement. The lever mechanism also incorporates a retractable design, extending when in use and retracting when not in use, ensuring convenient operation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0029] Figure 2 This is a schematic diagram of the structure at the bottom of the carrier frame of this utility model.

[0030] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model in the state of clamping the spraying component.

[0031] Figure 4 This is a schematic diagram of the drive mechanism of this utility model.

[0032] Figure 5 This is a schematic diagram of the internal structure of the circular tube of this utility model.

[0033] Figure 6 This utility model Figure 5 Enlarged structural diagram of section A in the middle.

[0034] Figure 7 This is a schematic diagram of the structure of the lever in the extended state of this utility model.

[0035] Explanation of reference numerals in the attached figures

[0036] 1. Water tank; 101. Filling port; 102. Sealing cap;

[0037] 2. Carrier; 201. Mounting bracket;

[0038] 3. Water pump;

[0039] 4. Water inlet pipe;

[0040] 5. Water outlet pipe;

[0041] 6. Spraying assembly; 601. Circular pipe; 602. First nozzle; 603. Retaining ring; 604. Pressure seat;

[0042] 7. Filter mechanism; 701. End cap; 7011. Receiving trough; 702. Filter screen cylinder; 703. First sealing gasket;

[0043] 8. Clamping mechanism; 801. Fixing frame; 802. Screw; 803. Nut; 804. Guide sleeve; 805. Guide post; 806. Pressure block;

[0044] 9. Tee pipe; 901. Second sealing gasket; 902. Second nozzle;

[0045] 10. Drive mechanism; 1001. Housing; 1002. Knob; 1003. Worm gear; 1004. Worm wheel; 1005. Shaft;

[0046] 11. Actuating lever; 1101. Slide groove;

[0047] 12. Stop;

[0048] 13. Magnetic block. Detailed Implementation

[0049] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0050] like Figure 1-7 As shown, a road maintenance spraying mechanism for roads, bridges, and tunnels includes a water supply mechanism; it also includes: a three-way pipe 9, the top end of which is connected to the water supply mechanism, and both ends of the three-way pipe 9 are fitted with detachable spraying components 6; a clamping mechanism 8, which is used to press the spraying components 6 so that the spraying components 6 abut against the three-way pipe 9; a drive mechanism 10, which is connected to the clamping mechanism 8, and the input end of the drive mechanism 10 is provided with a knob 1002; a filter mechanism 7, which is disposed inside the spraying components 6, and one end of the filter mechanism 7 is threadedly connected to the spraying components 6; and an actuating mechanism, which is housed inside one end of the filter mechanism 7.

[0051] like Figure 1 As shown, the water supply mechanism includes a water tank 1 and a water pump 3; the water inlet of the water pump 3 is connected to the water tank 1 through a water inlet pipe 4, and the water outlet of the water pump 3 is connected to a water outlet pipe 5, which is connected to the top of a three-way pipe 9; a liquid filling port 101 is provided on the top of the water tank 1, and a sealing cap 102 is provided on the liquid filling port 101.

[0052] In practice, the water pump 3 draws water from the water tank 1 through the inlet pipe 4, enters the three-way pipe 9 through the outlet pipe 5, and then enters the round pipe 601 through the three-way pipe 9. Water is then sprayed downwards through the first nozzle 602 and the second nozzle 902 to carry out road spraying and maintenance.

[0053] The filling port 101 is used to replenish the water in the water tank 1, while the sealing cap 102 is used to close the filling port 101.

[0054] like Figure 1-2 As shown, it also includes a carrier frame 2. The water pump 3 and the water tank 1 are both fixedly installed on the top surface of the carrier frame 2. Mounting brackets 201 are fixedly installed at the four corners of the bottom surface of the carrier frame 2, and mounting holes are provided on the mounting brackets 201.

[0055] The carrier 2 and mounting bracket 201 are used for fixing to an external vehicle, and the mounting bracket 201 provides mounting holes. A power supply and control switch are also provided on the vehicle for powering and electrically controlling the water pump 3.

[0056] like Figure 3As shown, the spraying assembly 6 includes a circular tube 601, and a plurality of first nozzles 602 are evenly spaced along the length of the bottom of the circular tube 601. The inner wall of one end of the circular tube 601 is connected to the outer wall of the end of the tee pipe 9, and a retaining ring 603 is seamlessly welded to the inner wall of the circular tube 601. A pressure seat 604 is fixedly installed on the outer wall of the end of the circular tube 601 near the tee pipe 9.

[0057] The left and right end faces of the three-way pipe 9 are provided with second sealing gaskets 901, and the second sealing gaskets 901 abut against the retaining ring 603; a second nozzle 902 is installed at the bottom of the three-way pipe 9.

[0058] With the spraying assembly 6 clamped at the end of the tee pipe 9, the round tube 601 on it mates with the end of the tee pipe 9, and the retaining ring 603 is pressed against the second sealing gasket 901, providing a seal in the clamped state and ensuring the connection sealing effect.

[0059] like Figure 3-4 As shown, the clamping mechanism 8 includes a fixed frame 801, a screw 802, a nut 803, a guide sleeve 804, a guide post 805, and a pressure block 806. Two screws 802 with opposite thread directions are rotatably mounted inside the fixed frame 801. Nuts 803 are threaded onto both screws 802. The pressure block 806 is fixedly connected to the nut 803, and the pressure block 806 presses against the pressure seat 604. The guide sleeve 804 is fixedly connected to the nut 803, and the guide post 805 is connected to the guide sleeve 804. The guide post 805 is parallel to the screw 802, and one end of the guide post 805 is fixedly connected to the fixed frame 801.

[0060] The drive mechanism 10 includes a housing 1001, a worm gear 1003, a worm wheel 1004, and a rotating shaft 1005. The housing 1001 is fixedly connected to the outer wall of the three-way pipe 9 and to the fixing frame 801. The rotating shaft 1005 is rotatably installed inside the housing 1001. The worm wheel 1004 is also provided inside the housing 1001. The worm wheel 1004 is fixedly sleeved with the rotating shaft 1005. The worm wheel 1004 is meshed with the worm gear 1003, and the worm gear 1003 is rotatably installed inside the housing 1001. Both ends of the rotating shaft 1005 are fixedly connected to the ends of two screws 802, respectively. One end of the worm gear 1003 is fixedly connected to a knob 1002, and the knob 1002 is located outside the housing 1001. The knob 1002 has a ring of anti-slip texture.

[0061] To adapt to roads of different widths, the vehicle is equipped with multiple spraying components 6 of different lengths to accommodate roads with different numbers of lanes. The number of first nozzles 602 on different spraying components 6 needs to increase with the length of the circular tube 601. Specifically, the nozzles are designed to be spaced 30 cm apart.

[0062] Before spraying the road, the appropriate spraying assembly 6 is installed according to the width of the road. Specifically, by rotating the knob 1002 in the forward direction, the worm gear 1003 is rotated. Through the meshing transmission between the worm gear 1003 and the worm wheel 1004, the rotating shaft 1005 drives the two screws 802 to rotate. Since the threads of the two screws 802 are opposite, and the two nuts 803 are respectively adapted to the two screws 802, with the guiding action of the guide sleeve 804 and the guide post 805, the two nuts 803 drive the pressure block 806 to move away from each other, so that the pressure seat 604 loses its clamping force. Then, the round tube 601 is rotated so that the pressure seat 604 and the pressure block 806 are misaligned. The round tube 601 is pulled so that it is pulled away from the end of the tee pipe 9. The misalignment of the pressure seat 604 and the pressure block 806 will not cause obstruction, and the disassembly is completed.

[0063] Next, install the spray assembly 6 adapted to the road width. Specifically, the round tube 601 is inserted into the end of the three-way pipe 9. Rotate the round tube 601 so that the first nozzle 602 faces the road and the pressure seat 604 is aligned with the pressure block 806. By rotating the knob 1002 in the opposite direction, the pressure block 806 is pressed against the pressure seat 604 through the drive mechanism 10 and the clamping mechanism 8 for clamping. The retaining ring 603 presses against the second sealing gasket 901, completing the installation.

[0064] like Figure 5 As shown, the filter mechanism 7 includes a head 701 and a filter cylinder 702. The head 701 is fixedly connected to one end of the filter cylinder 702. The head 701 is threadedly connected to the end of the round tube 601 away from the tee tube 9. A first sealing gasket 703 is provided on the head 701. The outer wall of the filter cylinder 702 is connected to the inner wall of the round tube 601.

[0065] The filter cylinder 702 is cylindrical with a number of filter holes evenly distributed on it for filtering impurities. It should be noted that a filter mechanism 7 is provided in the spray assembly 6 of different lengths, and the length of the filter cylinder 702 must be sufficient to cover the interface between all the first nozzles 602 and the circular tube 601.

[0066] By setting up the filtration mechanism 7, water enters the circular pipe 601 and is filtered through the filter screen 702 to prevent impurities and sand from entering the nozzle and thus prevent the nozzle from clogging.

[0067] like Figure 5-7 As shown, the actuation mechanism includes an actuation rod 11, and a storage groove 7011 is provided in the end cap 701. The actuation rod 11 is slidably installed in the storage groove 7011.

[0068] A magnetic block 13 is fixedly installed at one end of the storage groove 7011 located inside the end cap 701. One end of the lever 11 is magnetically connected to the magnetic block 13, and the other end of the lever 11 extends to the outside of the opening end of the storage groove 7011. A stop block 12 is fixedly connected to the inner wall of the opening end of the storage groove 7011. A sliding groove 1101 is opened on the rod surface of the lever 11 along the length direction. The stop block 12 is slidably connected to the sliding groove 1101.

[0069] The end cap 701 of the filter mechanism 7 is threadedly connected to the end of the round tube 601 away from the tee tube 9. When disassembling the filter mechanism 7, the end cap 701 needs to be screwed on to unscrew the end cap 701 from the round tube 601 and screw it on.

[0070] By designing a lever mechanism, when disassembling the filter mechanism 7, the lever 11 is pulled out of the storage slot 7011. After being pulled out, as... Figure 7 As shown, the stop block 12 is attached to the end wall of the slide groove 1101. By turning the lever 11, the end cap 701 and the round tube 601 are twisted to separate the end cap 701 from the round tube 601, and the filter screen cylinder 702 is pulled out from the round tube 601 to complete the disassembly. After disassembly, the filter screen cylinder 702 is cleaned.

[0071] After cleaning, the filter screen 702 is reinstalled into the round tube 601. By turning the lever 11, the end cap 701 is screwed to make the end cap 701 threadedly connected to the round tube 601.

[0072] Finally, the lever 11 is retracted into the storage slot 7011. The lever 11 is made of iron and contacts the magnet 13 for magnetic attraction and positioning, maintaining the storage state.

[0073] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A road maintenance spraying mechanism for roads, bridges, and tunnels, including a water supply mechanism; characterized in that, Also includes: A three-way pipe (9) is provided, the top end of which is connected to the water supply mechanism, and both the left and right ends of the three-way pipe (9) are fitted with detachable spraying components (6). A clamping mechanism (8) is used to press the spraying assembly (6) so that the spraying assembly (6) abuts against the tee pipe (9); A drive mechanism (10) is connected to the clamping mechanism (8), and a knob (1002) is provided at the input end of the drive mechanism (10); A filter mechanism (7) is provided inside the spray assembly (6), and one end of the filter mechanism (7) is threadedly connected to the spray assembly (6). A lever mechanism is housed within one end of the filter mechanism (7).

2. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 1, characterized in that: The water supply mechanism includes a water tank (1) and a water pump (3); the water inlet of the water pump (3) is connected to the water tank (1) through a water inlet pipe (4), the water outlet of the water pump (3) is connected to a water outlet pipe (5), and the water outlet pipe (5) is connected to the top of a three-way pipe (9); the top of the water tank (1) is provided with a liquid filling port (101), and a sealing cap (102) is provided on the liquid filling port (101).

3. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 2, characterized in that: It also includes a carrier frame (2), the water pump (3) and the water tank (1) are both fixedly installed on the top surface of the carrier frame (2), and mounting brackets (201) are fixedly installed at the four corners of the bottom surface of the carrier frame (2), and mounting holes are provided on the mounting brackets (201).

4. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 1, characterized in that: The spraying assembly (6) includes a circular tube (601), and a plurality of first nozzles (602) are evenly spaced along the length of the bottom of the circular tube (601). The inner wall of one end of the circular tube (601) is connected to the outer wall of the end of the tee pipe (9), and a retaining ring (603) is seamlessly welded on the inner wall of the circular tube (601). A pressure seat (604) is fixedly installed on the outer wall of the end of the circular tube (601) near the tee pipe (9).

5. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 4, characterized in that: The left and right end faces of the three-way pipe (9) are provided with second sealing gaskets (901), and the second sealing gaskets (901) abut against the retaining ring (603); the bottom of the three-way pipe (9) is equipped with a second nozzle (902).

6. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 4, characterized in that: The clamping mechanism (8) includes a fixed frame (801), a screw (802), a nut (803), a guide sleeve (804), a guide post (805), and a pressure block (806). The fixed frame (801) has two screws (802) with opposite thread directions rotatably installed inside. Each screw (802) is threaded with a nut (803). The nut (803) is fixedly connected to the pressure block (806). The pressure block (806) presses against the pressure seat (604). The nut (803) is fixedly connected to the guide sleeve (804). The guide sleeve (804) is connected to the guide post (805). The guide post (805) is parallel to the screw (802). One end of the guide post (805) is fixedly connected to the fixed frame (801).

7. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 6, characterized in that: The drive mechanism (10) includes a housing (1001), a worm gear (1003), a worm wheel (1004), and a rotating shaft (1005); the housing (1001) is fixedly connected to the outer wall of the three-way pipe (9), the housing (1001) is fixedly connected to the fixing frame (801), the rotating shaft (1005) is rotatably installed inside the housing (1001), and the worm wheel (1004) is also provided inside the housing (1001), the worm wheel (1004) and the rotating shaft (1005) Fixed sleeve connection, the worm wheel (1004) is meshed with the worm (1003), and the worm (1003) is rotatably installed inside the housing (1001). The two ends of the rotating shaft (1005) are respectively fixedly connected to the ends of the two screws (802). One end of the worm (1003) is fixedly connected to the knob (1002), and the knob (1002) is located outside the housing (1001). The knob (1002) is provided with a ring of anti-slip texture.

8. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 4, characterized in that: The filtering mechanism (7) includes a head (701) and a filter cylinder (702). The head (701) is fixed to one end of the filter cylinder (702). The head (701) is threaded to the end of the round tube (601) away from the tee tube (9). A first sealing gasket (703) is provided on the head (701). The outer wall of the filter cylinder (702) is connected to the inner wall of the round tube (601).

9. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 8, characterized in that: The actuation mechanism includes an actuation rod (11), and a storage groove (7011) is provided in the end cap (701). The actuation rod (11) is slidably installed in the storage groove (7011).

10. The road maintenance spraying mechanism for roads, bridges, and tunnels as described in claim 9, characterized in that: A magnetic block (13) is fixedly installed at one end of the storage groove (7011) inside the end cap (701). One end of the lever (11) is magnetically connected to the magnetic block (13), and the other end of the lever (11) extends to the outside of the opening end of the storage groove (7011). A stop block (12) is fixedly connected to the inner wall of the opening end of the storage groove (7011). A sliding groove (1101) is opened on the rod surface of the lever (11) along the length direction. The stop block (12) is slidably connected to the sliding groove (1101).