Maintenance device for roads and bridges

Abstract

The utility model relates to the technical field of road and bridge maintenance, and discloses a road and bridge maintenance device which comprises spray pipes and supporting frames arranged at the two ends of the spray pipes, the spray pipes are provided with water spraying openings, walking wheels are arranged at the bottoms of the supporting frames, and each spray pipe is provided with a water inlet end and a water outlet end opposite to the water inlet end. The multiple spraying pipes are sequentially arranged in the axial direction, the water inlet end of the next spraying pipe communicates with the water outlet end of the previous spraying pipe in a butt joint mode, and therefore when the maintenance device is used, the number of the spraying pipes needing to be assembled can be selected according to the width of the road surface, the situation that the spraying pipes need to be cut off is avoided, the spraying pipes can be recycled, and the maintenance efficiency is improved. Therefore, the situation of waste of the spray pipes is reduced, the applicability of the maintenance device is improved, and the maintenance cost of roads and bridges is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of road and bridge maintenance, and specifically relates to a road and bridge maintenance device. Background Art

[0002] Roads and bridges are generally composed of several major components: the roadbed, pavement, bridges, tunnels, and transportation engineering facilities. The roadbed is a linear structure built of soil or stone, while the pavement is a layered structure constructed of various road-building materials or mixtures, laid in layers on the roadbed for vehicles to travel on. After completing road and bridge construction, construction units need to use water spraying equipment to maintain the road and bridge to increase its strength and durability.

[0003] Existing maintenance devices include a nozzle and support frames located at both ends of the nozzle. The length of the nozzle is cut according to the width of the road surface. A water outlet is provided at the bottom of the nozzle, and rolling wheels are provided at the bottom of the support frame. When maintaining roads and bridges, a water supply pipe is connected to one end of the nozzle so that water in the water supply pipe enters the nozzle. The water entering the nozzle is sprayed out through the water outlet to maintain the road surface. At the same time, as the water is sprayed out through the water outlet, it pushes the support frames at both ends, causing the support frames to move the nozzle along the length of the road and bridge. However, since the length of the nozzle is cut according to the width of the road surface, and the width of the road surface may vary from one construction to another, this results in waste of nozzles and increases maintenance costs. Utility Model Content

[0004] The present application provides a maintenance device for roads and bridges to increase the applicability of the maintenance device and reduce the maintenance cost of roads and bridges.

[0005] The technical solutions adopted in this application are:

[0006] A maintenance device for roads and bridges, comprising a nozzle and a support frame arranged at both ends of the nozzle, the nozzle being provided with a water spray port, the bottom of the support frame being provided with a walking wheel, a plurality of nozzles being provided, each of the nozzles having a water inlet end and a water outlet end opposite to the water inlet end, the plurality of nozzles being arranged in sequence along the axial direction, and the water inlet end of the next nozzle being connected to the water outlet end of the previous nozzle.

[0007] By adopting the above-mentioned technical solution, when using the maintenance device in this application, the number of nozzles to be spliced ​​is first selected according to the width of the road surface, and then the assembled nozzles are connected to the support frame, and then the support frame supports the nozzles, and then the water supply pipe is connected to the water inlet end of a nozzle located at the end, so that the water in the water supply pipe enters the nozzle, and the water flows along the axial direction of the nozzle and is sprayed onto the road surface through the water nozzle, thereby realizing the maintenance of the road surface.

[0008] Since there are multiple nozzles in the present application, the multiple nozzles are arranged in sequence along the axial direction, and the water inlet end of the next nozzle is connected to the water outlet end of the previous nozzle. When using the maintenance device in the present application, the number of nozzles to be assembled can be selected according to the width of the road surface to avoid the need to intercept the nozzles so that the nozzles can be recycled, thereby reducing the waste of nozzles and increasing the applicability of the maintenance device to reduce the maintenance cost of roads and bridges.

[0009] Optionally, the water outlet end of each nozzle is provided with a blocking structure for blocking the water outlet end, and the water inlet end of each nozzle is provided with an unlocking structure. When the water outlet end is docked with the water inlet end, the unlocking structure acts on the blocking structure to enable the blocking structure to open the water outlet end.

[0010] By adopting the above technical solution, after multiple nozzles are spliced ​​together, the unlocking structure acts on the blocking structure, and then the blocking structure opens the corresponding water outlet end, so that water can enter the next nozzle through the water outlet end, thereby realizing the connection between the two adjacent nozzles. The nozzles whose water outlet ends are not spliced ​​with nozzles are blocked by the blocking structure to ensure the water pressure in the nozzles, thereby ensuring the spraying area of ​​the maintenance device, and then ensuring the maintenance effect on roads and bridges.

[0011] Optionally, the sealing structure includes a sealing plate, a sealing head and an elastic member, the sealing plate has a connecting hole, the sealing head can be extended into the connecting hole to seal the connecting hole, the elastic member acts on the sealing head, and when the sealing head is separated from the connecting hole, the elastic member is in a deformed state and applies an elastic force to the sealing head toward the connecting hole.

[0012] By adopting the above technical solution, when the two nozzles are spliced ​​together, the unlocking structure of the next nozzle acts on the blocking head, thereby separating the blocking head from the connecting hole, and the blocking head applies pressure to the elastic part, causing the elastic part to deform, thereby causing the blocking head to open the connecting hole and connect the two nozzles. After the two nozzles are separated, the elastic part gradually recovers its deformation, and the blocking head gradually extends into the connecting hole under the action of the elastic part to block the connecting hole, thereby achieving blocking of the water outlet.

[0013] Optionally, the elastic member is located on a side of the plugging head away from the sealing sheet, the aperture of the communicating hole gradually increases in a direction approaching the elastic member, and the plugging head is adapted to the communicating hole.

[0014] By adopting the above technical solution, since the aperture of the connecting hole gradually increases in the direction approaching the elastic member, the connection stability between the sealing head and the connecting hole is increased when the sealing head is extended into the connecting hole, thereby avoiding the occurrence of transitional movement of the sealing head under the action of the elastic member. At the same time, the contact area between the sealing head and the connecting hole is increased, thereby increasing the sealing effect of the sealing head on the connecting hole.

[0015] Optionally, the water outlet is provided with a guide plate located on the side of the plugging head away from the sealing plate, the guide plate is provided with a water-permeable hole, and the plugging head is provided with a guide column passing through the guide plate.

[0016] By adopting the above technical solution, since the guide plate is provided with a water-permeable hole, the water in the nozzle can pass through the water-permeable hole and flow in the nozzle, and when the plugging head moves, the plugging head drives the guide column to move, and the guide column and the guide plate slide relative to each other, so that the sliding cooperation of the guide column and the guide plate guides the plugging head, so as to increase the stability of the plugging head movement and ensure the resetting effect of the plugging head.

[0017] Optionally, the unlocking structure includes an unlocking rod, the blocking structure includes a sealing plate and a blocking head, and the unlocking structure includes an unlocking rod. When the water outlet end is docked with the water inlet end, the unlocking rod acts on the blocking head to separate the blocking head from the sealing plate.

[0018] By adopting the above technical solution, when two adjacent nozzles are spliced ​​together, the unlocking rod acts on the blocking head, which then separates the blocking head from the sealing sheet to release the blockage of the water outlet and simultaneously achieve connectivity between the two adjacent nozzles.

[0019] Optionally, the water inlet end is provided with a fixing plate, the fixing plate is provided with a through hole, and the unlocking rod is provided on the fixing plate.

[0020] By adopting the above technical solution, since the fixing plate is provided with a through hole, the water in the nozzle can pass through the through hole and flow in the nozzle, and the unlocking rod is provided on the fixing plate, thereby increasing the connection stability between the unlocking rod and the nozzle.

[0021] Optionally, a connecting pipe is provided on the outside of the water inlet end, and the connecting pipe can be threadedly connected to the water outlet end.

[0022] By adopting the above technical solution, since a connecting pipe that can be threadedly connected to the water outlet end is provided on the outside of the water inlet end, the two adjacent nozzles are connected together by threaded connection, thereby increasing the connection stability of the two adjacent nozzles and increasing the structural strength of multiple nozzles spliced ​​together.

[0023] Optionally, a first connecting portion and a second connecting portion detachably connected to the first connecting portion are provided on the top of the support frame, and the first connecting portion and the second connecting portion together form an accommodating space for accommodating the nozzle.

[0024] By adopting the above technical solution, multiple nozzles spliced ​​together are connected to the support frame. The nozzle is first placed on the top of the first connecting part, and then the second connecting part is installed to the first connecting part, so that the nozzle is located in the accommodating space to achieve the connection between the nozzle and the support frame, thereby increasing the connection stability between the nozzle and the support frame.

[0025] Optionally, extension pieces are extended from both ends of the first connecting part and the second connecting part, a limiting pin is provided on the extension piece of the first connecting part, and a limiting groove is provided on the extension piece of the second connecting part, and the limiting groove passes through the side of the extension piece so that the second connecting part can be installed to the first connecting part from the side.

[0026] By adopting the above technical solution, after the nozzle is placed on the first connecting part, the second connecting part is installed along the side of the first connecting part, and then the limit pin is located in the limit groove, so that the limit pin and the limit groove cooperate to limit the second connecting part, thereby increasing the connection stability between the nozzle and the support frame, and reducing the difficulty of installing the second connecting part.

[0027] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0028] 1. The maintenance device in the present application includes a nozzle and a support frame provided at both ends of the nozzle, the nozzle is provided with a water spray port, the bottom of the support frame is provided with a walking wheel, a plurality of nozzles are provided, each nozzle is provided with a water spray port, the bottom of the support frame is provided with a walking wheel, a plurality of nozzles are provided, each nozzle has a water inlet end and a water outlet end opposite to the water inlet end, and the plurality of nozzles are arranged in sequence along the axial direction, and the water inlet end of the next nozzle is connected to the water outlet end of the previous nozzle. Then, when using the maintenance device in the present application, the number of nozzles to be assembled can be selected according to the width of the road surface to avoid the need to intercept the nozzles, so that the nozzles can be recycled, thereby reducing the waste of nozzles, thereby increasing the applicability of the maintenance device and reducing the maintenance cost of roads and bridges.

[0029] 2. In this application, the water outlet of each water sprayer is provided with a blocking structure for blocking the water outlet, and the water inlet of each nozzle is provided with an unlocking structure. When the water outlet is connected to the water inlet, the unlocking structure acts on the blocking structure to open the water outlet so that water can enter the next nozzle through the water outlet to achieve connectivity between the two adjacent nozzles. The water outlet of the nozzle that is not spliced ​​with the nozzle is blocked by the blocking structure to ensure the water pressure in the nozzle, thereby ensuring the spraying area of ​​the maintenance device and further ensuring the maintenance effect on the road and bridge.

[0030] 3. The sealing structure in the present application includes a sealing plate, a sealing head and an elastic part. The sealing plate has a connecting hole. The sealing head can be extended into the connecting hole to seal the connecting hole. The elastic part acts on the sealing head. When the sealing head is separated from the connecting hole, the elastic part is in a deformed state and applies an elastic force toward the connecting hole to the corresponding sealing head. When the two nozzles are spliced ​​together, the unlocking structure of the next nozzle acts on the sealing head, thereby separating the sealing head from the connecting hole, and the sealing head applies pressure to the elastic part, and the elastic part is deformed, so that the sealing head opens the connecting hole and the two nozzles are connected. After the two nozzles are separated, the elastic part gradually recovers its deformation, and the sealing head gradually extends into the connecting hole under the action of the elastic part to seal the connecting hole, so as to achieve sealing of the water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 This is a schematic structural diagram of the maintenance device according to one embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the connection structure of two adjacent nozzles in one embodiment of the present application, where the direction indicated by the dotted arrow is the direction of water flow;

[0034] Figure 3 This is a partial structural diagram of the nozzle according to one embodiment of the present application, mainly showing the blocking structure;

[0035] Figure 4 This is a schematic structural diagram of the support frame according to one embodiment of the present application;

[0036] Figure 5 This is a schematic structural diagram of the first connecting portion in one embodiment of the present application;

[0037] Figure 6 This is a schematic structural diagram of the second connecting portion in one embodiment of the present application.

[0038] Reference numerals:

[0039] 1. Nozzle; 11. Water outlet; 12. Guide plate; 121. Water hole; 13. Connecting pipe; 2. Support frame; 21. Travel wheel; 22. First connecting part; 221. Extension plate; 222. Limit pin; 223. Limit groove; 224. Limit plate; 23. Second connecting part; 3. Blocking structure; 31. Sealing plate; 311. Connecting hole; 32. Blocking head; 321. Guide column; 33. Elastic member; 331. Matching column; 4. Unlocking structure; 41. Unlocking rod; 42. Fixing plate; 421. Through hole. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0041] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0042] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0043] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0045] Reference Figures 1 to 6 Disclosed is a maintenance device for roads and bridges, which includes a nozzle 1 and a support frame 2 arranged at both ends of the nozzle 1, the nozzle 1 is provided with a water spray port 11, and a walking wheel 21 is provided at the bottom of the support frame 2. A plurality of nozzles 1 are provided, each nozzle 1 has a water inlet end and a water outlet end opposite to the water inlet end, and the plurality of nozzles 1 are arranged in sequence along the axial direction, and the water inlet end of the next nozzle 1 is connected to the water outlet end of the previous nozzle 1.

[0046] It should be noted that the aforementioned butt connection means that two adjacent nozzles 1 can be fixedly connected together along their own axial directions, and the two connected nozzles 1 can be connected to each other.

[0047] When using the maintenance device in the present application, first select the number of nozzles 1 that need to be spliced ​​according to the width of the road surface, and then connect the assembled nozzles 1 to the support frame 2, and then make the support frame 2 support the nozzles 1, and then connect the water supply pipe to the water inlet end of a nozzle 1 located at the end, so that the water in the water supply pipe enters the nozzle 1, and the water flows along the axial direction of the nozzle 1 and is sprayed onto the road surface through the water nozzle 11, thereby achieving maintenance of the road surface.

[0048] Since there are multiple nozzles 1 in the present application, the multiple nozzles 1 are arranged in sequence along the axial direction, and the water inlet end of the next nozzle 1 is connected to the water outlet end of the previous nozzle 1. When using the maintenance device in the present application, the number of nozzles 1 to be assembled can be selected according to the width of the road surface to avoid the need to intercept the nozzles 1, so that the nozzles 1 can be recycled, thereby reducing the waste of the nozzles 1, and further increasing the applicability of the maintenance device to reduce the maintenance cost of roads and bridges.

[0049] In a preferred embodiment, referring to Figure 2 and Figure 3The water outlet end of each nozzle 1 is provided with a blocking structure 3 for blocking the water outlet end, and the water inlet end of each nozzle 1 is provided with an unlocking structure 4. When the water outlet end is docked with the water inlet end, the unlocking structure 4 acts on the blocking structure 3 to enable the blocking structure 3 to open the water outlet end.

[0050] Specifically, after multiple nozzles 1 are spliced ​​together, the unlocking structure 4 acts on the blocking structure 3, and then the blocking structure 3 opens the corresponding water outlet end, so that water can enter the next nozzle 1 through the water outlet end, so as to achieve the connection between the two adjacent nozzles 1. For the nozzle 1 whose water outlet end is not spliced ​​with the nozzle 1, its water outlet end is blocked by the blocking structure 3 to ensure the water pressure in the nozzle 1, thereby ensuring the spraying area of ​​the maintenance device, and then ensuring the maintenance effect on the road and bridge.

[0051] This application does not make any specific limitation on the blocking structure 3. Preferably, refer to Figure 2 and Figure 3 The sealing structure 3 includes a sealing sheet 31, a sealing head 32 and an elastic member 33. The sealing sheet 31 has a connecting hole 311. The sealing head 32 can extend into the connecting hole 311 to seal the connecting hole 311. The elastic member 33 acts on the sealing head 32. When the sealing head 32 is separated from the connecting hole 311, the elastic member 33 is in a deformed state and applies an elastic force to the sealing head 32 toward the connecting hole 311.

[0052] It can be understood that the circumferential side of the sealing plate 31 is sealed and fixedly connected to the inner wall of the nozzle 1, and the sealing head 32 has a sealing position extending into the connecting hole 311 and contacting the connecting hole 311 and an opening position separating from the sealing plate 31 and opening the connecting hole 311.

[0053] Specifically, when the two nozzles 1 are spliced ​​together, the unlocking structure 4 of the next nozzle 1 acts on the blocking head 32, thereby separating the blocking head 32 from the connecting hole 311, and the blocking head 32 applies pressure to the elastic member 33, and the elastic member 33 is deformed, so that the blocking head 32 opens the connecting hole 311, and the two nozzles 1 are connected. After the two nozzles 1 are separated, the elastic member 33 gradually recovers its deformation, and the blocking head 32 gradually extends into the connecting hole 311 under the action of the elastic member 33 to block the connecting hole 311, thereby achieving blocking of the water outlet.

[0054] Further, refer to Figure 2 and Figure 3 The elastic member 33 is located on the side of the plugging head 32 away from the sealing sheet 31 , and the aperture of the communicating hole 311 gradually increases in the direction approaching the elastic member 33 , and the plugging head 32 is adapted to the communicating hole 311 .

[0055] Since the aperture of the connecting hole 311 gradually increases in the direction approaching the elastic member 33, the connection stability between the sealing head 32 and the connecting hole 311 is increased when the sealing head 32 extends into the connecting hole 311, thereby avoiding the occurrence of transitional movement of the sealing head 32 under the action of the elastic member 33, and at the same time increasing the contact area between the sealing head 32 and the connecting hole 311, thereby increasing the sealing effect of the sealing head 32 on the connecting hole 311.

[0056] The present application does not specifically limit the structure of the elastic member 33. Preferably, refer to Figure 2 and Figure 3 The elastic member 33 is a spring to ensure the connection stability between the plugging head 32 and the communicating hole 311 when the plugging head 32 is in the blocking position. In other embodiments, the elastic member 33 can also be an elastic column, an elastic sheet, or other elastic structures.

[0057] Further, refer to Figure 2 and Figure 3 The water outlet is provided with a guide piece 12 located on the side of the plugging head 32 away from the sealing piece 31 , the guide piece 12 is provided with a water-permeable hole 121 , and the plugging head 32 is provided with a guide column 321 passing through the guide piece 12 .

[0058] Since the guide piece 12 is provided with a water-permeable hole 121, the water in the nozzle 1 can pass through the water-permeable hole 121 and flow in the nozzle 1. When the plugging head 32 moves, the plugging head 32 drives the guide column 321 to move, and the guide column 321 and the guide piece 12 slide relative to each other, so that the sliding cooperation between the guide column 321 and the guide piece 12 guides the plugging head 32, so as to increase the stability of the movement of the plugging head 32 and ensure the resetting effect of the plugging head 32.

[0059] Preferably, the elastic member 33 is sleeved on the outside of the guide column 321, so that the guide column 321 can guide the deformation direction of the elastic member 33 to increase the stability of the elastic member 33 when it is deformed, thereby ensuring the resetting effect of the plugging head 32.

[0060] Better, refer to Figure 2 and Figure 3 A mating column 331 that cooperates with the unlocking structure 4 is provided on the side of the blocking head 32 facing away from the elastic member 33. The diameter of the mating column 331 is smaller than the diameter of the blocking head 32, and the length of the mating column 331 is greater than the length of the sealing sheet 31, so that the blocking head 32 can be completely detached from the connecting hole 311 to ensure the flow area of ​​the connecting hole 311, thereby ensuring the maintenance effect on the road and bridge.

[0061] In other embodiments, the blocking structure 3 can also be a flexible sealing membrane provided at the water outlet, and a plurality of separation grooves are provided in the middle position of the sealing membrane so that when the unlocking structure 4 acts on the sealing membrane, the sealing membrane at the separation groove is deformed to open the water outlet.

[0062] In a preferred embodiment, referring to Figure 2 The unlocking structure 4 includes an unlocking rod 41, and the blocking structure 3 includes a sealing sheet 31 and a blocking head 32. The unlocking structure 4 includes an unlocking rod 41. When the water outlet end is docked with the water inlet end, the unlocking rod 41 acts on the blocking head 32 to separate the blocking head 32 from the sealing sheet 31.

[0063] Specifically, when two adjacent nozzles 1 are spliced ​​together, the unlocking rod 41 acts on the matching column 331 on the blocking head 32, thereby separating the blocking head 32 from the sealing sheet 31 to release the blockage of the water outlet end and realize the connection between the two adjacent nozzles 1.

[0064] Further, refer to Figure 2 A fixing plate 42 is provided at the water inlet end, the fixing plate 42 is provided with a through hole 421 , and the unlocking rod 41 is provided on the fixing plate 42 .

[0065] Since the fixing plate 42 is provided with a through hole 421 , water in the nozzle 1 can pass through the through hole 421 and flow in the nozzle 1 , and the unlocking rod 41 is provided on the fixing plate 42 , thereby increasing the connection stability between the unlocking rod 41 and the nozzle 1 .

[0066] The present application does not make any specific limitation on the method of splicing two adjacent nozzles 1. Preferably, refer to Figure 2 A connecting pipe 13 is provided on the outside of the water inlet end, and the connecting pipe 13 can be threadedly connected to the water outlet end.

[0067] Since a connecting pipe 13 that can be threadedly connected to the water outlet is provided on the outside of the water inlet end, the two adjacent nozzles 1 are connected together by threaded connection, thereby increasing the connection stability of the two adjacent nozzles 1 and increasing the structural strength of multiple nozzles 1 spliced ​​together.

[0068] In other embodiments, two adjacent nozzles 1 may be spliced ​​together by snapping.

[0069] This application does not make any specific limitation on the structure of the support frame 2. Preferably, refer to Figure 4 、 Figure 5 and Figure 6 A first connecting portion 22 and a second connecting portion 23 detachably connected to the first connecting portion 22 are provided on the top of the support frame 2. The first connecting portion 22 and the second connecting portion 23 together form an accommodating space for accommodating the nozzle 1.

[0070] Connect multiple spliced ​​nozzles 1 to the support frame 2, first place the nozzle 1 on the top of the first connecting part 22, and then install the second connecting part 23 to the first connecting part 22, so that the nozzle 1 is located in the accommodating space to achieve the connection between the nozzle 1 and the support frame 2, thereby increasing the connection stability between the nozzle 1 and the support frame 2.

[0071] The present application does not specifically limit the structures of the first connecting portion 22 and the second connecting portion 23. Preferably, refer to Figure 4 、 Figure 5 and Figure 6 The first connecting portion 22 and the second connecting portion 23 both have a semicircular cross-section, so that the first connecting portion 22 and the second connecting portion 23 together form a circular accommodation space, thereby increasing the connection area between the nozzle 1 and the support frame 2 and ensuring the stability of the connection between the nozzle 1 and the support frame 2. In other embodiments, the first connecting portion 22 and the second connecting portion 23 can also have other cross-sectional shapes, as long as they can together form an accommodation space.

[0072] In a preferred embodiment, referring to Figure 5 and Figure 6 An extension piece 221 is extended from both ends of the first connecting part 22 and the second connecting part 23. A limiting pin 222 is provided on the extension piece 221 of the first connecting part 22, and a limiting groove 223 is provided on the extension piece 221 of the second connecting part 23. The limiting groove 223 passes through the side of the extension piece 221 so that the second connecting part 23 can be installed to the first connecting part 22 from the side.

[0073] Specifically, after placing the nozzle 1 on the first connecting part 22, the second connecting part 23 is installed along the side of the first connecting part 22, and then the limiting pin 222 is located in the limiting groove 223, so that the limiting pin 222 and the limiting groove 223 cooperate to limit the second connecting part 23, thereby increasing the connection stability between the nozzle 1 and the support frame 2, and reducing the difficulty of installing the second connecting part 23.

[0074] It can be understood that the limiting pin 222 includes a limiting section located in the limiting groove 223 and a blocking section located outside the limiting groove 223 and on the side of the extension piece 221 of the second connecting part 23 facing away from the first connecting part 22, and the diameter of the blocking section is larger than the diameter of the limiting section so that the blocking section can block the second connecting part 23.

[0075] Better, refer to Figure 6The extension piece 221 of the second connection part 23 is extended to the side where the opening of the limiting groove 223 is located, and a limiting piece 224 is provided. The limiting piece 224 is provided with a pin hole, so that after the second connection part 23 is installed to the first connection part 22, a pin shaft can be passed through the pin hole so that the pin shaft can limit the second connection part 23 to prevent the second connection part 23 from separating from the first connection part 22 from the side, thereby ensuring the connection stability of the second connection part 23 and the first connection part 22, and further ensuring the connection stability of the support frame 2 and the nozzle 1.

[0076] In other embodiments, a limiting tube is provided on the top of the support frame 2 , and the nozzle 1 is passed through the limiting tube to achieve the connection between the nozzle 1 and the support frame 2 .

[0077] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0078] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0079] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A road and bridge maintenance device, comprising a nozzle (1) and support frames (2) provided at both ends of the nozzle (1), wherein the nozzle (1) is provided with a water spray port (11), and the bottom of the support frame (2) is provided with a walking wheel (21), characterized in that: A plurality of nozzles (1) are provided, each of the nozzles (1) having a water inlet end and a water outlet end opposite to the water inlet end. The plurality of nozzles (1) are arranged in sequence along the axial direction, and the water inlet end of the next nozzle (1) is connected to the water outlet end of the previous nozzle (1).

2. A road and bridge maintenance device according to claim 1, characterized in that: The water outlet end of each nozzle (1) is provided with a blocking structure (3) for blocking the water outlet end, and the water inlet end of each nozzle (1) is provided with an unlocking structure (4). When the water outlet end is docked with the water inlet end, the unlocking structure (4) acts on the blocking structure (3) so that the blocking structure (3) opens the water outlet end.

3. A road and bridge maintenance device according to claim 2, characterized in that: The sealing structure (3) comprises a sealing sheet (31), a sealing head (32) and an elastic member (33); the sealing sheet (31) has a connecting hole (311); the sealing head (32) can extend into the connecting hole (311) to seal the connecting hole (311); the elastic member (33) acts on the sealing head (32); when the sealing head (32) is separated from the connecting hole (311), the elastic member (33) is in a deformed state and applies an elastic force to the sealing head (32) in the direction of the connecting hole (311).

4. A road and bridge maintenance device according to claim 3, characterized in that: The elastic member (33) is located on a side of the plugging head (32) facing away from the sealing sheet (31), the aperture of the communicating hole (311) gradually increases in a direction approaching the elastic member (33), and the plugging head (32) is adapted to the communicating hole (311).

5. A road and bridge maintenance device according to claim 3, characterized in that: The water outlet end is provided with a guide piece (12) located on the side of the plugging head (32) away from the sealing piece (31), the guide piece (12) is provided with a water-permeable hole (121), and the plugging head (32) is provided with a guide column (321) penetrating the guide piece (12).

6. A road and bridge maintenance device according to claim 2, characterized in that: The unlocking structure (4) includes an unlocking rod (41), and the blocking structure (3) includes a sealing sheet (31) and a blocking head (32). The unlocking structure (4) includes an unlocking rod (41), and when the water outlet end is docked with the water inlet end, the unlocking rod (41) acts on the blocking head (32) to separate the blocking head (32) from the sealing sheet (31).

7. A road and bridge maintenance device according to claim 6, characterized in that: The water inlet end is provided with a fixing plate (42), the fixing plate (42) is provided with a through hole (421), and the unlocking rod (41) is provided on the fixing plate (42).

8. A road and bridge maintenance device according to claim 1, characterized in that: A connecting pipe (13) is provided outside the water inlet end, and the connecting pipe (13) can be threadedly connected to the water outlet end.

9. A road and bridge maintenance device according to claim 1, characterized in that: The top of the support frame (2) is provided with a first connecting portion (22) and a second connecting portion (23) detachably connected to the first connecting portion (22), and the first connecting portion (22) and the second connecting portion (23) together form an accommodating space for accommodating the nozzle (1).

10. A road and bridge maintenance device according to claim 9, characterized in that: Both ends of the first connecting portion (22) and the second connecting portion (23) are provided with extension pieces (221), a limiting pin (222) is provided on the extension piece (221) of the first connecting portion (22), and a limiting slot (223) is provided on the extension piece (221) of the second connecting portion (23), and the limiting slot (223) passes through the side of the extension piece (221) so that the second connecting portion (23) is installed on the first connecting portion (22) from the side.

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