Multifunctional well lid convenient to disassemble and assemble

Abstract

The multifunctional well lid comprises a fixed groove drum, a rotating groove plate is welded to the end face of the outer side of the fixed groove drum, a rotating hole is formed in the inner side of the rotating groove plate, a rotating shaft is rotationally installed on the inner side of the rotating hole, and a rotating block is welded to one end of the rotating shaft; a rotating groove is formed in the inner side of a rotating block, the rotating block is rotationally embedded into the inner side of the rotating groove, a forward and reverse groove plate is welded to one end of a connecting rod, and a doodle board is embedded into the inner side of a mounting groove. The content part of the manhole cover only needs to be replaced, the manhole cover dismounting and mounting steps are reduced, the working time is shortened, the content main body attribute of a theme park is improved, after the graffiti board is replaced, the pulling handle is pressed to the initial position, meanwhile, the forward and reverse groove board is plugged into the inner side of the clamping groove again, and therefore replacement is completed.

Description

Technical Field

[0001] The invention relates to the technical field of manhole covers, in particular to a multifunctional manhole cover which is easy to assemble and disassemble. Background Art

[0002] Manhole covers refer to multi-purpose facilities set up in urban roads or theme parks for communication, sewage and wire laying, and artistic manhole covers are one of them. However, decorations are added to the surface of the manhole cover to make it more beautiful and integrated into the use environment. The design of artistic manhole covers can reflect elements such as regional culture, historical heritage, and urban characteristics, forming a city style with local characteristics. In terms of design, carving, casting, painting and other processes can be used to make the manhole cover an artistic landscape, so that it can be integrated into the urban environment and coordinated with the surrounding buildings and streets. Therefore, in some theme parks, artistic manhole covers need to frequently replace the graffiti on their surfaces according to the theme;

[0003] However, the existing manhole cover system is very troublesome to replace. It takes a lot of time to remove the manhole cover and then paint it. Finally, the painted manhole cover is installed, which consumes a lot of time and is very inconvenient to use. In order to avoid the above technical problems, it is necessary to provide a multifunctional manhole cover that is easy to disassemble and assemble to overcome the above defects in the prior art. Summary of the invention

[0004] The present invention provides a multifunctional manhole cover that is easy to disassemble and assemble, which can effectively solve the problem that the existing manhole cover system proposed in the above background technology is very troublesome to replace, and it takes a lot of time to remove the manhole cover and then paint it, and finally install the painted manhole cover, which consumes a lot of time and is very inconvenient to use.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multifunctional manhole cover that is easy to disassemble and assemble, comprising a fixed groove cylinder, and a disassembly assembly is installed inside the fixed groove cylinder;

[0006] The disassembly assembly includes a rotating slot plate, a rotating hole, a rotating shaft, a rotating block, a rotating slot, a rotating block, a connecting rod, a positive and negative slot plate, a clamping slot, a load-bearing plate, a display slot, an installation slot, a graffiti board, a buckle slot, a magnetic slot, a magnetic block, a sliding rod, a sliding slot plate, a positioning rod, a push-out spring, a positioning slot, a pulling handle and a connecting slot;

[0007] A rotating groove plate is welded to the outer end surface of the fixed groove cylinder, a rotating hole is opened on the inner side of the rotating groove plate, a rotating shaft is rotatably installed on the inner side of the rotating hole, a rotating block is welded to one end of the rotating shaft, a rotating groove is opened on the inner side of the rotating block, a rotating block is rotatably embedded in the inner side of the rotating groove, a connecting rod is welded to one end of the rotating block, and a positive and negative groove plate is welded to one end of the connecting rod;

[0008] The top of the front and back groove plates is provided with a display groove, the inner side of the front and back groove plates is provided with a mounting groove, the inner side of the mounting groove is embedded with a graffiti board, and the top side of the front and back groove plates is provided with a buckle groove;

[0009] A magnetic suction groove is provided on the outer side of the graffiti board, a magnetic suction block is magnetically attracted on the inner side of the magnetic suction groove, a sliding rod is welded on one end face of the magnetic suction block, a sliding groove plate is slidably sleeved on the outer side of the sliding rod, a positioning rod is welded on the outer side of the sliding rod, a pushing spring is sleeved on the outer side of the sliding groove plate, a positioning groove is provided on the outer side of the sliding groove plate at a position corresponding to the positioning rod, a pulling handle is welded on one end of the sliding groove plate, and a connecting groove is provided on the inner side of the magnetic suction block at a position corresponding to the sliding rod.

[0010] Preferably, a clamping groove is provided on the inner side of the fixed groove cylinder, a load-bearing plate is welded on the inner side of the clamping groove, and buckle grooves are provided on the top edges of the positive and negative groove plates.

[0011] Preferably, there are two display slots, which are symmetrically arranged on the top and bottom surfaces of the front and back slot plates, and the diameter of the graffiti board is 1.2 times the diameter of the display slot.

[0012] Preferably, a movable groove is provided on the inner side of the rotating block at a position corresponding to the connecting rod, and the connecting rod is rotatably connected to the rotating block through the movable groove.

[0013] Preferably, one end of the ejection spring is spot-welded to the magnetic attraction block, and the other end of the ejection spring is not connected to the pulling handle.

[0014] Preferably, the inner diameter of the sliding groove plate is equal to the diameter of the sliding rod, and the contact surfaces of the sliding groove plate and the sliding rod are both smooth curved surfaces.

[0015] Preferably, there are two positioning grooves, which are symmetrically arranged on the outer end surface of the sliding groove plate, and a magnetic iron sheet is embedded in the inner side of the magnetic suction groove.

[0016] Preferably, a decorative component is installed on the top of the fixed groove drum;

[0017] The decoration assembly includes a thread block, a decoration plate, a thread groove, a limit groove, a positive clamping rod, an extended groove barrel, an extended slide groove, an extended spring, an extended slide rod, a secondary clamping rod, a torsion block, a torsion groove and an observation groove;

[0018] A threaded block is welded to the top of the fixed groove cylinder, and a decorative plate is threadedly connected to the outer side of the threaded block. A threaded groove is provided at the bottom of the decorative plate at a position corresponding to the threaded block. A limiting groove is provided at the top of the decorative plate, and a positive clamping rod is embedded in the inner side of the limiting groove. An extension groove cylinder is welded to one end of the positive clamping rod, and an extension slide groove is provided on the inner side of the extension groove cylinder. An extension spring is embedded in the inner side of the extension slide groove, and an extension slide rod is slidably embedded in the inner side of the extension groove cylinder. A secondary clamping rod is welded to one end of the extension slide rod, and a torsion block is installed on the inner side of the limiting groove, a torsion groove is provided at the inner side of the positive clamping rod at a position corresponding to the torsion block, and an observation groove is provided on the inner side of the decorative plate.

[0019] Preferably, there are two limiting grooves, which are symmetrically arranged at the top of the decorative plate, and the diameter of the observation groove is equal to the diameter of the display groove.

[0020] Preferably, the diameter of the extended slide rod is equal to the inner diameter of the extended groove barrel, one end of the extended spring is spot welded to the extended groove barrel, and the other end of the extended spring is spot welded to the extended slide rod.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0022] 1. A disassembly component is provided, and the operator can replace the graffiti board by inserting the graffiti board with new content into the inner side of the front and back slot boards, so as to quickly replace the graffiti board, that is, replace the graffiti content. The replacement process is simple and convenient. The manhole cover can be separated. Every time the theme needs to be changed, only the content part of the manhole cover needs to be replaced, which reduces the steps of manhole cover disassembly and assembly, reduces working time, and improves the main content attributes of the theme park. After replacing the graffiti board, press and pull the handle to return to the initial position and reinsert the front and back slot boards into the inner side of the card slot to complete the replacement.

[0023] 2. A decorative component is provided. By rotating the extended groove barrel and the extended slide rod, the decorative plate is driven to rotate on the outside of the threaded block, so that the decorative plate can be removed from the top of the fixed groove barrel. It is simple and quick. The installation of the decorative plate can decorate the wellhead and reduce the exposed parts of other accessories of the well, thereby making the entire artistic manhole cover more beautiful. The decorative plate can only be quickly removed using a special extended groove barrel, which not only improves the disassembly efficiency, but also can play a certain anti-theft role and improve the safety of the park.

[0024] To sum up, when the front and back slot plates are flipped, the connecting rods and rotating blocks connected to the front and back slot plates will rotate on the inside of the rotating blocks, thereby completing the flipping of the front and back slot plates and displaying the content that needs to be replaced, or when the next theme pattern needs to be changed in a short time, the same operation can be performed to ensure the clarity of the picture, and cooperate with the modification of the decorative panel to reduce the exposure of the remaining part of the manhole cover, thereby enhancing the immersion of the theme park and improving the efficiency of replacing the theme manhole covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0026] In the attached picture:

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the installation structure of the graffiti board of the present invention;

[0029] Figure 3 It is a schematic diagram of the installation structure of the rotating block of the present invention;

[0030] Figure 4 It is a schematic diagram of the installation structure of the load-bearing plate of the present invention;

[0031] Figure 5 It is a schematic diagram of the installation structure of the rotating block of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the disassembly assembly of the present invention;

[0033] Figure 7 It is a schematic diagram of the installation structure of the ejection spring of the present invention;

[0034] Figure 8 It is a schematic diagram of the opening of the thread groove of the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the decorative assembly of the present invention;

[0036] Numbers in the figure: 1, fixed groove drum;

[0037] 2. Disassembly components; 201. Rotation slot plate; 202. Rotation hole; 203. Rotation shaft; 204. Rotation block; 205. Rotation slot; 206. Rotation block; 207. Connecting rod; 208. Front and back slot plates; 209. Snap-on slot; 210. Load-bearing plate; 211. Display slot; 212. Installation slot; 213. Graffiti board; 214. Buckle slot; 215. Magnetic slot; 216. Magnetic block; 217. Sliding rod; 218. Sliding slot plate; 219. Positioning rod; 220. Push-out spring; 221. Positioning slot; 222. Pull handle; 223. Connecting slot;

[0038] 3. Decorative assembly; 301. Threaded block; 302. Decorative plate; 303. Threaded groove; 304. Limiting groove; 305. Positive clamping rod; 306. Extended groove cylinder; 307. Extended slide groove; 308. Extended spring; 309. Extended slide rod; 310. Auxiliary clamping rod; 311. Twist block; 312. Twist groove; 313. Observation groove. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0040] Example: Figure 1-9 As shown, the present invention provides a technical solution, a multifunctional manhole cover that is easy to disassemble and assemble, comprising a fixed groove drum 1, and a disassembly component 2 is installed inside the fixed groove drum 1;

[0041] The disassembly assembly 2 includes a rotating slot plate 201, a rotating hole 202, a rotating shaft 203, a rotating block 204, a rotating slot 205, a rotating block 206, a connecting rod 207, a positive and negative slot plate 208, a clamping slot 209, a load-bearing plate 210, a display slot 211, a mounting slot 212, a graffiti board 213, a buckle slot 214, a magnetic slot 215, a magnetic block 216, a sliding rod 217, a sliding slot plate 218, a positioning rod 219, a push-out spring 220, a positioning slot 221, a pulling handle 222 and a connecting slot 223;

[0042] A rotating groove plate 201 is welded to the outer end surface of the fixed groove drum 1, a rotating hole 202 is provided on the inner side of the rotating groove plate 201, a rotating shaft 203 is rotatably installed on the inner side of the rotating hole 202, a rotating block 204 is welded to one end of the rotating shaft 203, a rotating groove 205 is provided on the inner side of the rotating block 204, a rotating block 206 is rotatably embedded in the inner side of the rotating groove 205, a connecting rod 207 is welded to one end of the rotating block 206, a movable groove is provided on the inner side of the rotating block 204 at a position corresponding to the connecting rod 207, the connecting rod 207 is rotatably connected to the rotating block 204 through the movable groove, so as to facilitate the rotation of the positive and negative groove plates 208, and the positive and negative groove plates 208 are welded to one end of the connecting rod 207;

[0043] A display slot 211 is provided at the top of the front and back slot plates 208, a mounting slot 212 is provided on the inner side of the front and back slot plates 208, a graffiti board 213 is embedded in the inner side of the mounting slot 212, two display slots 211 are provided, and the two display slots 211 are symmetrically provided on the top and bottom end surfaces of the front and back slot plates 208, the diameter of the graffiti board 213 is 1.2 times the diameter of the display slot 211, to prevent the graffiti board 213 from moving, and a buckle slot 214 is provided on the top side of the front and back slot plates 208;

[0044] A magnetic suction groove 215 is provided on the outside of the graffiti board 213, and a magnetic suction block 216 is magnetically attracted on the inside of the magnetic suction groove 215. A sliding rod 217 is welded on one end face of the magnetic suction block 216. A sliding groove plate 218 is slidably sleeved on the outside of the sliding rod 217. A positioning rod 219 is welded on the outside of the sliding rod 217. A push-out spring 220 is sleeved on the outside of the sliding groove plate 218. The inner diameter of the sliding groove plate 218 is equal to the diameter of the sliding rod 217. The contact surfaces of the sliding groove plate 218 and the sliding rod 217 are both smooth curved surfaces, which is conducive to the sliding of the pull handle 222. The outer side of the sliding groove plate 218 A positioning groove 221 is provided at a position corresponding to the positioning rod 219. There are two positioning grooves 221, and the two positioning grooves 221 are symmetrically provided on the outer end surface of the sliding groove plate 218. A magnetic iron sheet is embedded in the inner side of the magnetic suction groove 215 to improve the disassembly speed and convenience. A pulling handle 222 is welded at one end of the sliding groove plate 218, and one end of the ejection spring 220 is spot welded to the magnetic suction block 216. The other end of the ejection spring 220 is not connected to the pulling handle 222, which is convenient for pulling the graffiti board 213. A connecting groove 223 is provided on the inner side of the magnetic suction block 216 at a position corresponding to the sliding rod 217.

[0045] A clamping groove 209 is provided on the inner side of the fixed groove drum 1 , a load-bearing plate 210 is welded on the inner side of the clamping groove 209 , and a buckle groove 214 is provided on the top side of the positive and negative groove plates 208 .

[0046] A decorative component 3 is installed on the top of the fixed groove drum 1;

[0047] The decoration component 3 includes a thread block 301, a decoration plate 302, a thread groove 303, a limit groove 304, a positive clamping rod 305, an extended groove cylinder 306, an extended slide groove 307, an extended spring 308, an extended slide rod 309, a secondary clamping rod 310, a twisting block 311, a twisting groove 312 and an observation groove 313;

[0048] A thread block 301 is welded to the top of the fixed groove barrel 1, and a decorative plate 302 is connected to the outer side of the thread block 301 through a thread. A thread groove 303 is provided at the bottom of the decorative plate 302 at a position corresponding to the thread block 301. A limiting groove 304 is provided at the top of the decorative plate 302. There are two limiting grooves 304, which are symmetrically provided at the top position of the decorative plate 302. The diameter of the observation groove 313 is equal to the diameter of the display groove 211, which is convenient for displaying graffiti content. A positive clamping rod 305 is embedded in the inner side of the limiting groove 304, and an extension groove barrel 306 is welded to one end of the positive clamping rod 305. An extension slide groove 303 is provided on the inner side of the extension groove barrel 306. 7. An extension spring 308 is embedded in the inner side of the extension slide groove 307, and an extension slide rod 309 is slidably embedded in the inner side of the extension groove cylinder 306. The diameter of the extension slide rod 309 is equal to the inner diameter of the extension groove cylinder 306. One end of the extension spring 308 is spot-welded to the extension groove cylinder 306, and the other end of the extension spring 308 is spot-welded to the extension slide rod 309, which is conducive to fixing the extension slide rod 309. A secondary clamping rod 310 is welded to one end of the extension slide rod 309, a torsion block 311 is installed on the inner side of the limiting groove 304, a torsion groove 312 is opened at the inner side of the positive clamping rod 305 at the position corresponding to the torsion block 311, and an observation groove 313 is opened on the inner side of the decorative plate 302.

[0049] The working principle and use process of the present invention are as follows: First, when the operator needs to replace the content on the graffiti board 213, he first uses the special extension groove cylinder 306 to remove the decorative plate 302 from the top of the fixed groove cylinder 1, and then the operator inserts his hand into the inner side of the buckle groove 214 to buckle the positive and negative groove plates 208 and lift the positive and negative groove plates 208 upward. At this time, the positive and negative groove plates 208 will rotate on the inner side of the rotating hole 202 through the rotating block 204 and the rotating shaft 203. At this time, when the rotating block 20 When the front and back groove plates 208 are rotated to a certain angle, they are completely rotated out from the inner side of the fixed groove cylinder 1. When the front and back groove plates 208 are completely rotated out from the fixed groove cylinder 1, the ejection spring 220 pushes the pull handle 222 outward, and the pull handle 222 pops out from the inner side of the mounting groove 212. At this time, people can pull the pull handle 222 outward, thereby driving the sliding groove plate 218 to move outward through the pull handle 222. At this time, the sliding groove plate 218 and the positioning rod 219 are connected through the positioning groove 222. 1 are mutually engaged, so when the sliding slot plate 218 is pulled to the maximum position, the sliding rod 217 can be pulled by the sliding slot plate 218, at this time, the magnetic block 216 can be driven to move by the sliding rod 217, and then the graffiti board 213 can be pulled out from the inner side of the positive and negative slot plates 208. At this time, the operator can replace the graffiti board 213 and insert the graffiti board 213 with new content into the inner side of the positive and negative slot plates 208, so as to quickly replace the graffiti board 213, that is, to replace the graffiti content. The replacement process is simple and convenient. The manhole cover is separated. When the theme needs to be changed each time, only the content part of the manhole cover needs to be replaced, which reduces the steps of disassembling and assembling the manhole cover and reduces the working time, and improves the content main attributes of the theme park. After replacing the graffiti board 213, press and pull the handle 222 to the initial position and reinsert the positive and negative slot plates 208 into the inner side of the card slot 209, thereby completing the replacement;

[0050] Next, graffiti content can be drawn on both sides of each graffiti board 213. The same or different content can be drawn on both sides of the graffiti board 213 according to the use requirements. When drawing the same content, if the content on the front side of the graffiti board 213 is worn out, the front and back slot plates 208 can be rotated, and then the front and back slot plates 208 can be turned over. At this time, the connecting rod 207 and the rotating block 206 connected to the front and back slot plates 208 will rotate on the inner side of the rotating block 204, thereby completing the turning over of the front and back slot plates 208, and displaying the content that needs to be replaced. Or when the next theme pattern needs to be replaced in a short time, the same operation can be performed to ensure the clarity of the picture, thereby improving the immersion of the theme park and improving the efficiency of replacing the theme manhole covers.

[0051] Finally, each time the manhole cover is disassembled, the operator can use professional equipment to replace the decorative plate 302 on the surface of the manhole cover. At this time, the operator inserts the twisting groove 312 on the inner side of the positive clamping rod 305 into the inner side of one of the limiting grooves 304, so that the twisting groove 312 on the inner side of the positive clamping rod 305 is clamped with the twisting block 311, and then presses the extension slide bar 309 to compress the extension spring 308, thereby reducing the overall length, and then inserts the twisting groove 312 on one side of the auxiliary clamping rod 310 into the inner side of the corresponding limiting groove 304, thereby fixing the extension groove cylinder 304. 06. At this time, rotate the extended groove barrel 306 and the extended slide rod 309, thereby driving the decorative plate 302 to rotate on the outside of the threaded block 301, so that the decorative plate 302 can be removed from the top of the fixed groove barrel 1. It is simple and quick. The installation of the decorative plate 302 can play a decorative role on the wellhead and reduce the exposed parts of other accessories of the well, thereby making the entire artistic manhole cover more beautiful. In addition, the decorative plate 302 can only be quickly removed using a dedicated extended groove barrel 306, which not only improves the disassembly efficiency, but also can play a certain anti-theft role and improve the safety of the park.

[0052] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned 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 present invention shall be included in the protection scope of the present invention.

Claims

1. A multifunctional manhole cover that is easy to assemble and disassemble, comprising a fixed groove drum (1), characterized in that: A disassembly assembly (2) is installed on the inner side of the fixed grooved barrel (1); The disassembly assembly (2) comprises a rotating slot plate (201), a rotating hole (202), a rotating shaft (203), a rotating block (204), a rotating slot (205), a rotating block (206), a connecting rod (207), a front and back slot plate (208), a clamping slot (209), a load-bearing plate (210), a display slot (211), an installation slot (212), a graffiti board (213), a buckle slot (214), a magnetic slot (215), a magnetic block (216), a sliding rod (217), a sliding slot plate (218), a positioning rod (219), an ejection spring (220), a positioning slot (221), a pulling handle (222) and a connecting slot (223); A rotating groove plate (201) is welded to the outer end surface of the fixed groove cylinder (1), a rotating hole (202) is provided on the inner side of the rotating groove plate (201), a rotating shaft (203) is rotatably mounted on the inner side of the rotating hole (202), a rotating block (204) is welded to one end of the rotating shaft (203), a rotating groove (205) is provided on the inner side of the rotating block (204), a rotating block (206) is rotatably embedded in the inner side of the rotating groove (205), a connecting rod (207) is welded to one end of the rotating block (206), and a positive and negative groove plate (208) is welded to one end of the connecting rod (207); The top of the front and back groove plates (208) is provided with a display groove (211), the inner side of the front and back groove plates (208) is provided with a mounting groove (212), the inner side of the mounting groove (212) is embedded with a graffiti board (213), and the top side of the front and back groove plates (208) is provided with a buckle groove (214); The outer side of the graffiti board (213) is provided with a magnetic suction groove (215), the inner side of the magnetic suction groove (215) is magnetically attracted with a magnetic suction block (216), a sliding rod (217) is welded to one end face of the magnetic suction block (216), the outer side of the sliding rod (217) is slidably sleeved with a sliding groove plate (218), the outer side of the sliding rod (217) is welded with a positioning rod (219), the outer side of the sliding groove plate (218) is sleeved with a push-out spring (220), the outer side of the sliding groove plate (218) is provided with a positioning groove (221) at a position corresponding to the positioning rod (219), one end of the sliding groove plate (218) is welded with a pulling handle (222), and the inner side of the magnetic suction block (216) is provided with a connecting groove (223) at a position corresponding to the sliding rod (217).

2. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 1 is characterized in that: A clamping groove (209) is provided on the inner side of the fixed groove cylinder (1), a load-bearing plate (210) is welded on the inner side of the clamping groove (209), and a buckle groove (214) is provided on the top side of the positive and negative groove plates (208).

3. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 1 is characterized in that: There are two display slots (211), which are symmetrically arranged on the top and bottom surfaces of the front and back slot plates (208). The diameter of the graffiti board (213) is 1.2 times the diameter of the display slot (211).

4. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 1 is characterized in that: A movable groove is provided on the inner side of the rotating block (204) at a position corresponding to the connecting rod (207), and the connecting rod (207) is rotatably connected to the rotating block (204) via the movable groove.

5. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 1 is characterized in that: One end of the ejection spring (220) is spot welded to the magnetic attraction block (216), and the other end of the ejection spring (220) is not connected to the pulling handle (222).

6. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 1 is characterized in that: The inner diameter of the sliding groove plate (218) is equal to the diameter of the sliding rod (217), and the contact surfaces of the sliding groove plate (218) and the sliding rod (217) are both smooth curved surfaces.

7. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 1 is characterized in that: There are two positioning grooves (221), which are symmetrically arranged on the outer end surface of the sliding groove plate (218), and a magnetic attraction sheet is embedded in the inner side of the magnetic attraction groove (215).

8. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 1 is characterized in that: A decorative component (3) is installed on the top end of the fixed groove drum (1); The decoration component (3) comprises a threaded block (301), a decoration plate (302), a threaded groove (303), a limiting groove (304), a positive clamping rod (305), an extended groove cylinder (306), an extended sliding groove (307), an extended spring (308), an extended sliding rod (309), a secondary clamping rod (310), a twisting block (311), a twisting groove (312) and an observation groove (313); A threaded block (301) is welded to the top of the fixed groove cylinder (1); the outer side of the threaded block (301) is threadedly connected to a decorative plate (302); a threaded groove (303) is provided at the bottom of the decorative plate (302) at a position corresponding to the threaded block (301); a limiting groove (304) is provided at the top of the decorative plate (302); a positive clamping rod (305) is embedded in the inner side of the limiting groove (304); an extended groove cylinder (306) is welded to one end of the positive clamping rod (305); and a threaded groove cylinder (306) is provided on the inner side of the extended groove cylinder (306). An extended slide groove (307) is provided, an extended spring (308) is embedded in the inner side of the extended slide groove (307), an extended slide rod (309) is slidably embedded in the inner side of the extended groove cylinder (306), a secondary clamping rod (310) is welded to one end of the extended slide rod (309), a torsion block (311) is installed in the inner side of the limit groove (304), a torsion groove (312) is provided in the inner side of the positive clamping rod (305) at a position corresponding to the torsion block (311), and an observation groove (313) is provided in the inner side of the decorative plate (302).

9. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 8, characterized in that: There are two limit grooves (304), which are symmetrically arranged at the top of the decorative plate (302). The diameter of the observation groove (313) is equal to the diameter of the display groove (211).

10. The multifunctional manhole cover that is easy to assemble and disassemble according to claim 8, characterized in that: The diameter of the extended slide bar (309) is equal to the inner diameter of the extended groove barrel (306), one end of the extended spring (308) is spot welded to the extended groove barrel (306), and the other end of the extended spring (308) is spot welded to the extended slide bar (309).

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