Anti-slag-falling tool for dismantling inspection well shaft
By designing an anti-slag tool that includes a support tube, a sealing structure, a suspension structure, a positioning structure and a collection structure, the problem of waste materials and waste residue falling into the well chamber when the inspection well shaft is dismantled is solved, improving the safety of the operation and making it easier to handle. Debris.
Patent Information
- Application Number
- CN202411654144.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-01-21
AI Technical Summary
During the construction of reconstruction and expansion projects, when the old inspection well bore is removed, it is difficult to prevent waste and waste slag from falling into the well room, and the operators have safety hazards of falling into the well.
A tool for preventing slag falling in the demolition inspection wellbore including a support tube, a sealing structure, a suspension structure, a positioning structure and a collection structure is designed. The wellhead is closed by the sealing structure of the support tube, the suspension structure provides fixed stability, and the collection structure collects falling debris.
It effectively prevents debris from falling into the inspection well, improves operational safety, facilitates debris handling, and reduces safety hazards.
Smart Images
Figure CN119332962A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of protective devices, in particular to a tool for preventing slag from falling from a shaft of a dismantling inspection well. Background Art
[0002] Inspection wells are set up for the maintenance of urban underground infrastructure such as power supply, water supply, drainage, sewage, communication, cable TV, gas pipes, street light lines, etc., and are easy to install. They are generally set up at pipeline intersections, bends, places where pipe diameters or slopes change, and at regular intervals on straight pipe sections to facilitate regular inspection of ancillary structures.
[0003] However, in the construction of reconstruction and expansion projects, old inspection well shafts are often demolished and rebuilt. Even if the inspection well shaft is dismantled manually, it is inevitable that waste materials and slag will fall into the well chamber, and there is also a safety hazard of workers at the wellhead falling into the well. Summary of the invention
[0004] In view of the problems in the prior art, the present invention provides a tool for preventing debris from falling when dismantling a shaft of an inspection well.
[0005] The technical solution adopted by the present invention to solve its technical problem is: a tool for dismantling the shaft of an inspection well to prevent debris falling, comprising a support tube, a sealing structure is provided on the side of the support tube, a hanging structure is installed on the top side of the support tube, the hanging structure is connected to a positioning structure, and a collecting structure is provided on the inner side of the support tube.
[0006] Specifically, the sealing structure includes a support frame, a connecting frame is provided on the bottom side of the support tube, a support plate is fixedly connected to the end of the connecting frame, an inner tube is sleeved on the side of the support tube, the inner tube and the support plate are in conflict with each other, an air valve is installed on the side of the inner tube, and a plurality of limit blocks are fixedly connected to the side of the support tube, and the top side of the inner tube is in conflict with the limit blocks.
[0007] Specifically, a fixing groove is provided on the bottom side of the support tube, and the fixing groove is in an "L"-shaped structure. The connecting frame is slidably connected to the support tube through the fixing groove. A pushing block is slidably connected to the inner side of the support tube. A first spring is fixedly connected between the pushing block and the support tube, and the end of the pushing block is in an inclined structure, and the inclined end of the pushing block conflicts with the connecting frame.
[0008] Specifically, the suspension structure includes a suspension rod, which is in an "L" shape. The suspension rod passes through a support tube. A sliding groove is provided on the side of the suspension rod. The suspension rod is slidably connected to a sliding sleeve through the sliding groove. The sliding sleeve is rotatably connected to the support tube, and a torsion spring is fixedly connected between the sliding sleeve and the support tube.
[0009] Specifically, the inner side of the support tube is rotatably connected to a gear ring, the top of the sliding sleeve is fixedly connected to a gear, the gear is slidably connected to the suspension rod, the side of the gear is meshed with the gear ring, the bottom side of the sliding sleeve is fixedly connected to a limiting slider, a limiting groove is provided on the support tube, the limiting groove is a semicircular structure, and the limiting slider is slidably connected to the support tube through the limiting groove.
[0010] Specifically, a threaded sleeve is threadedly connected to the bottom side of the hanging rod, a positioning groove is provided on the side of the threaded sleeve, a positioning block is slidably connected to the inner side of the support tube, a second spring is fixedly connected between the positioning block and the support tube, the end of the positioning block is in contact with the threaded sleeve through the positioning groove, and the top of the threaded sleeve is in contact with the support tube.
[0011] Specifically, the positioning structure includes a snap-fit block, the inner side of the support tube is slidably connected with the snap-fit block, a third spring is fixedly connected between the snap-fit block and the support tube, a snap-fit groove is provided on the bottom side of the gear ring, and the top end of the snap-fit block is snap-fitted with the gear ring through the snap-fit groove.
[0012] Specifically, a rotary block is rotatably connected to the support cylinder, a hanging ear is fixedly connected to the top of the rotary block, a protrusion is fixedly connected to the bottom side of the rotary block, a receiving groove is provided on the top side of the engaging block, and the protrusion is engaged with the engaging block through the receiving groove.
[0013] Specifically, the collecting structure includes a collecting bucket, the inner side of the supporting tube is a conical structure, the collecting bucket is in conflict with the inner side of the supporting tube, and two telescopic rods are provided on the collecting bucket, and the ends of the two telescopic rods are rotatably connected to lifting rods.
[0014] Specifically, a sliding groove is provided on the inner side of the support tube, the telescopic rod is slidably connected to the support tube via the sliding groove, and a fourth spring is fixedly connected between the bottom end of the telescopic rod and the support tube.
[0015] The beneficial effects of the present invention are:
[0016] (1) The tool for preventing debris from falling when dismantling the shaft of an inspection well described in the present invention has a sealing structure on the side of the support tube, through which the wellhead of the inspection well to be repaired can be fully sealed to prevent debris from falling into the well.
[0017] (2) The present invention relates to a tool for preventing debris from falling when dismantling an inspection well shaft. A hanging structure is installed on the top side of the support tube. The hanging structure is connected to a positioning structure. The hanging structure can provide a fixing effect for the support tube to ensure the stability of the support tube fixed on the inspection well. The positioning structure can be used to conveniently lift the device and fix the position of the hanging rod at the same time, making it easy to use.
[0018] (3) The tool for preventing debris from falling during the dismantling of an inspection well described in the present invention has a collecting structure on the inner side of the support tube, through which the fallen debris can be conveniently collected, which facilitates the handling and prevents the debris from falling into the inspection well. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0020] Figure 1 A schematic diagram of the overall structure provided by the present invention;
[0021] Figure 2 It is a schematic diagram of the connection structure between the support cylinder and the collection barrel of the present invention;
[0022] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A shown;
[0023] Figure 4 It is a schematic diagram of the connection structure between the support tube and the suspension rod of the present invention;
[0024] Figure 5 for Figure 4 The enlarged structural diagram of part B is shown;
[0025] Figure 6 It is a schematic diagram of the connection structure between the support tube and the connection frame of the present invention;
[0026] Figure 7 for Figure 6 The enlarged structural diagram of the C part shown;
[0027] Figure 8 It is a schematic diagram of the connection structure of the support plate of the connection frame of the present invention;
[0028] Fig. 9 It is a schematic diagram of the connection structure between the support tube and the inner tube of the present invention;
[0029] Fig.10 for Fig. 9 The enlarged structural diagram of part D is shown.
[0030] In the figure: 1, support tube; 2, sealing structure; 201, inner tube; 202, limit block; 203, connecting frame; 204, support plate; 205, air valve; 206, fixing groove; 207, pushing block; 208, first spring; 3, suspension structure; 301, suspension rod; 302, gear ring; 303, sliding groove; 304, gear; 305, sliding sleeve; 306, torsion spring; 307, limit groove; 308, screw Sleeve; 309, positioning groove; 310, positioning block; 311, second spring; 312, limit slider; 4, positioning structure; 401, hanging ear; 402, rotating block; 403, protrusion; 404, engaging block; 405, third spring; 406, receiving groove; 407, clamping groove; 5, collecting structure; 501, collecting bucket; 502, lifting rod; 503, telescopic rod; 504, sliding groove; 505, fourth spring. DETAILED DESCRIPTION
[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0032] like Figure 1 , Figure 3 , Figure 7 As shown, a tool for preventing debris from falling during the dismantling of an inspection well shaft described in the present invention comprises a support tube 1, a sealing structure 2 is provided on the side of the support tube 1, a hanging structure 3 is installed on the top side of the support tube 1, the hanging structure 3 is connected to a positioning structure 4, and a collecting structure 5 is provided on the inner side of the support tube 1.
[0033] Specifically, Figure 1 , Figure 2 , Figure 6 , Figure 8 , Fig. 9 As shown, the sealing structure 2 includes a support frame, a connecting frame 203 is provided on the bottom side of the support tube 1, a support plate 204 is fixedly connected to the end of the connecting frame 203, an inner tube 201 is sleeved on the side of the support tube 1, the inner tube 201 and the support plate 204 are in abutment with each other, an air valve 205 is installed on the side of the inner tube 201, and a plurality of limit blocks 202 are fixedly connected to the side of the support tube 1, and the top side of the inner tube 201 and the limit blocks 202 are in abutment with each other. A fixing groove 206 is provided on the bottom side of the support tube 1, and the fixing groove 206 is in an "L"-shaped structure. The connecting frame 203 is slidably connected to the support tube 1 through the fixing groove 206. A pushing block 207 is slidably connected to the inner side of the support tube 1. A first spring 208 is fixedly connected between the pushing block 207 and the support tube 1. The end of the pushing block 207 is in an inclined structure, and the inclined end of the pushing block 207 is in conflict with the connecting frame 203.
[0034] The diameter of the support tube 1 is slightly smaller than the shaft of the inspection well, and an inner tube 201 is provided on the outer side of the support tube 1. After the support tube 1 is placed in the shaft, air is inflated into the inner tube 201 through the air valve 205. As the inner tube 201 is inflated, the inner tube 201 fully contacts the inner wall of the shaft, thereby preventing debris from falling into the inspection well through the gap between the support tube 1 and the shaft. At the same time, since the inner tube 201 will continue to be worn during repeated use, in order to facilitate the replacement of the inner tube 201, the bottom side of the inner tube 201 is supported by the connecting frame 203 and the support plate 204 arranged at the end, and the limit block 202 on the top side is combined to prevent the inner tube 201 from shifting when the support tube 1 is placed. When the inner tube 201 needs to be inspected or replaced, the user can rotate the connecting frame 203 so that the connecting frame 203 pushes the pushing block 207 on the inner side of the sliding groove 303 to one side. At this time, the connecting frame 203 can be taken out, and then the inner tube 201 can be disassembled.
[0035] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig.10 As shown, the suspension structure 3 includes a suspension rod 301, and the suspension rod 301 is in an "L" shape. The suspension rod 301 passes through the support tube 1. A sliding groove 303 is provided on the side of the suspension rod 301. The suspension rod 301 is slidably connected with a sliding sleeve 305 through the sliding groove 303. The sliding sleeve 305 is rotationally connected to the support tube 1. A torsion spring 306 is fixedly connected between the sliding sleeve 305 and the support tube 1. A gear ring 302 is rotationally connected to the inner side of the support tube 1. A gear 304 is fixedly connected to the top of the sliding sleeve 305. The gear 304 is slidably connected to the suspension rod 301, and the side of the gear 304 is meshed with the gear ring 302. The bottom side of the sliding sleeve 305 is fixedly connected with a limiting slider 312, and a limiting groove 307 is provided on the support tube 1. The limiting groove 307 is a semicircular structure. The limiting slider 312 is slidably connected with the support tube 1 through the limiting groove 307. The bottom side of the suspension rod 301 is threadedly connected with a threaded sleeve 308, and a positioning groove 309 is provided on the side of the threaded sleeve 308. A positioning block 310 is slidably connected to the inner side of the support tube 1. A second spring 311 is fixedly connected between the positioning block 310 and the support tube 1. The end of the positioning block 310 conflicts with the threaded sleeve 308 through the positioning groove 309, and the top of the threaded sleeve 308 conflicts with the support tube 1.
[0036] Before placing the support tube 1 in the shaft of the inspection well, in order to ensure that the support tube 1 is fixed at the top position of the shaft, a hanging rod 301 is provided on the top side of the support tube 1. The hanging rod 301 is an "L"-shaped structure. By hanging the top of the hanging rod 301 on the top of the inspection well, a hanging effect can be provided for the support tube 1 to maintain the stability of the support tube 1. At the same time, according to different wellhead heights, the user can adjust the hanging height of the top of the hanging rod 301 by rotating the threaded sleeve 308 on the bottom side of the hanging rod 301. The side of the threaded sleeve 308 The positioning block 310 can locate the current position of the hanging rod 301, so as to facilitate the adjustment of the height of the whole hanging rod 301. On the other hand, in order to facilitate the movement of the device, the hanging rod 301 can be rotated inward. At the same time, through the gear ring 302 arranged on the inner side of the supporting tube 1, the rotation of any hanging rod 301 can drive all the hanging rods 301 to rotate at the same time through the transmission effect of the gear 304 and the gear 304. When the top end of the hanging rod 301 rotates inward, the area of the top side of the device can be reduced, so as to facilitate placement and movement.
[0037] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 As shown, the positioning structure 4 includes a snap-fit block 404, the inner side of the support tube 1 is slidably connected with the snap-fit block 404, a third spring 405 is fixedly connected between the snap-fit block 404 and the support tube 1, a snap-fit groove 407 is provided on the bottom side of the gear ring 302, the top of the snap-fit block 404 is snap-fitted with the gear ring 302 through the snap-fit groove 407, a rotary block 402 is rotatably connected to the support tube 1, the top of the rotary block 402 is fixedly connected with a hanging ear 401, the bottom side of the rotary block 402 is fixedly connected with a protrusion 403, the top side of the snap-fit block 404 is provided with a receiving groove 406, the protrusion 403 is snap-fitted with the snap-fit block 404 through the receiving groove 406;
[0038] When the rotation of the suspension rod 301 is completed and the device needs to be moved, as the suspension rod 301 turns inward, the locking block 404 on the inner side of the support tube 1 will engage with the locking groove 407 on the gear ring 302. At this time, the gear ring 302 cannot continue to rotate, thereby maintaining the state of the suspension rod 301 rotated inward. When it is needed, the user can rotate the rotating blocks 402 on both sides, and the protrusions 403 on the bottom side of the rotating block 402 will disengage from the receiving groove 406 on the locking block 404, and push the locking block 404 to the bottom side, releasing the locking state of the locking block 404 and the gear ring 302. At this time, through the effect of the torsion spring 306 between the sliding sleeve 305 on the suspension rod 301 and the support tube 1, the suspension rod 301 will automatically adjust the direction, cooperate with the limiting effect of the limiting groove 307 and the limiting slider 312, and convert to the supporting state, which is convenient for the deployment of the device, and the hanging ear 401 on the top side of the rotating block 402 is convenient for hoisting the device.
[0039] Specifically, Figure 1 , Figure 4 , Figure 6 , Fig.10 As shown, the collecting structure 5 includes a collecting barrel 501, the inner side of the supporting tube 1 is a conical structure, the collecting barrel 501 conflicts with the inner side of the supporting tube 1, two telescopic rods 503 are arranged on the collecting barrel 501, the ends of the two telescopic rods 503 are rotatably connected with a lifting rod 502, a slide groove 504 is opened on the inner side of the supporting tube 1, the telescopic rod 503 is slidably connected with the supporting tube 1 through the slide groove 504, and a fourth spring 505 is fixedly connected between the bottom end of the telescopic rod 503 and the supporting tube 1;
[0040] A collecting bucket 501 is provided on the inner side of the supporting tube 1. Since the inner side of the supporting tube 1 is a conical structure, the collecting bucket 501 can be conveniently fixed on the supporting tube 1 and taken out. At the same time, a telescopic rod 503 that can be extended is provided on the collecting bucket 501, which is convenient for the operator to clean up the debris in the collecting bucket 501 in time.
[0041] When the present invention is in use, first, the diameter of the support tube 1 is slightly smaller than the shaft of the inspection well, and an inner tube 201 is provided on the outer side of the support tube 1. After the support tube 1 is placed in the shaft, air is inflated into the inner tube 201 through the air valve 205. As the inner tube 201 is inflated and expanded, the inner tube 201 fully contacts the inner wall of the shaft, thereby preventing debris from falling into the inspection well through the gap between the support tube 1 and the shaft. At the same time, since the inner tube 201 will continue to be worn during repeated use, in order to facilitate the replacement of the inner tube 201, the bottom side of the inner tube 201 is supported by the connecting frame 203 and the support plate 204 arranged at the end, and the limit block 202 on the top side is combined to prevent the inner tube 201 from shifting when the support tube 1 is placed. When replacing, the user can rotate the connecting frame 203 so that the connecting frame 203 pushes the pushing block 207 inside the sliding groove 303 to one side. At this time, the connecting frame 203 can be taken out, and then the inner tube 201 can be disassembled. Before placing the support tube 1 in the shaft of the inspection well, in order to ensure that the support tube 1 is fixed at the top position of the shaft, a hanging rod 301 is provided on the top side of the support tube 1. The hanging rod 301 is an "L"-shaped structure. By hanging the top end of the hanging rod 301 on the top end of the inspection well, a hanging effect can be provided for the support tube 1 to maintain the stability of the support tube 1. At the same time, according to different wellhead heights, the user can adjust the hanging height of the top of the hanging rod 301 by rotating the threaded sleeve 308 located on the bottom side of the hanging rod 301. The positioning block 310 on the side of the threaded sleeve 308 can position the current position of the hanging rod 301, so as to facilitate the adjustment of the height of the entire hanging rod 301. On the other hand, in order to facilitate the movement of the device, the hanging rod 301 can be rotated inwardly. At the same time, through the toothed ring 302 arranged on the inner side of the supporting tube 1, the rotation of any hanging rod 301 can drive all the hanging rods 301 to rotate at the same time through the gear 304 and the transmission effect of the gear 304. When the top end of the hanging rod 301 is rotated inwardly, the area of the top side of the device can be reduced, so as to facilitate placement and movement. When the rotation of the hanging rod 301 is completed and the device needs to be moved, as the hanging rod 301 turns inward, the engaging block 404 on the inner side of the supporting tube 1 will engage with the toothed ring The locking groove 407 on the 302 is locked, and the gear ring 302 cannot continue to rotate, thereby maintaining the state of being rotated inward with respect to the suspension rod 301. When it is needed, the user can rotate the rotary blocks 402 on both sides, and the protrusions 403 on the bottom side of the rotary block 402 will disengage from the receiving groove 406 on the locking block 404, and push the locking block 404 to the bottom side, releasing the locking state of the locking block 404 and the gear ring 302. At this time, through the effect of the torsion spring 306 between the sliding sleeve 305 on the suspension rod 301 and the support tube 1, the suspension rod 301 will automatically adjust the direction, cooperate with the limiting effect of the limiting groove 307 and the limiting slider 312, and convert it into a supporting state, which is convenient for the deployment of the device, and the hanging ear 401 on the top side of the rotary block 402 is convenient for hoisting the device.A collection bucket 501 is provided on the inner side of the support tube 1. Since the inner side of the support tube 1 is a conical structure, the collection bucket 501 can be easily fixed on the support tube 1 and taken out. At the same time, a telescopic rod 503 is provided on the collection bucket 501, which is convenient for the operator to clean up the debris in the collection bucket 501 in time.
[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A tool for preventing slag from falling when dismantling a manhole, characterized in that: It comprises a support tube (1), a sealing structure (2) is provided on the side of the support tube (1), a hanging structure (3) is installed on the top side of the support tube (1), the hanging structure (3) is connected to a positioning structure (4), and a collecting structure (5) is provided on the inner side of the support tube (1); The sealing structure (2) comprises a support frame, a connecting frame (203) is provided on the bottom side of the support tube (1), a support plate (204) is fixedly connected to the end of the connecting frame (203), an inner tube (201) is sleeved on the side of the support tube (1), the inner tube (201) and the support plate (204) are in contact with each other, an air valve (205) is installed on the side of the inner tube (201), and a plurality of limit blocks (202) are fixedly connected to the side of the support tube (1), and the top side of the inner tube (201) and the limit blocks (202) are in contact with each other.
2. A tool for preventing debris from falling when dismantling a manhole according to claim 1, characterized in that: The bottom side of the support tube (1) is provided with a fixing groove (206), and the fixing groove (206) is in an "L"-shaped structure. The connecting frame (203) is slidably connected to the support tube (1) via the fixing groove (206). A pushing block (207) is slidably connected to the inner side of the support tube (1). A first spring (208) is fixedly connected between the pushing block (207) and the support tube (1). The end of the pushing block (207) is in an inclined structure, and the inclined end of the pushing block (207) is in contact with the connecting frame (203).
3. The tool for preventing slag from falling when dismantling a manhole according to claim 1 is characterized by: The suspension structure (3) comprises a suspension rod (301), the suspension rod (301) is in an "L"-shaped structure, the suspension rod (301) passes through the support tube (1), a sliding groove (303) is provided on the side of the suspension rod (301), the suspension rod (301) is slidably connected to a sliding sleeve (305) through the sliding groove (303), the sliding sleeve (305) and the support tube (1) are rotationally connected, and a torsion spring (306) is fixedly connected between the sliding sleeve (305) and the support tube (1).
4. A tool for preventing debris from falling when dismantling a manhole according to claim 3, characterized in that: The inner side of the support tube (1) is rotatably connected to a gear ring (302); the top end of the sliding sleeve (305) is fixedly connected to a gear (304); the gear (304) is slidably connected to the suspension rod (301); the side surface of the gear (304) is meshed with the gear ring (302); the bottom side of the sliding sleeve (305) is fixedly connected to a limiting slider (312); a limiting groove (307) is provided on the support tube (1); the limiting groove (307) is of a semicircular structure; the limiting slider (312) is slidably connected to the support tube (1) via the limiting groove (307).
5. A tool for preventing debris from falling when dismantling a manhole according to claim 4, characterized in that: The bottom side of the suspension rod (301) is threadedly connected to a threaded sleeve (308), a positioning groove (309) is provided on the side of the threaded sleeve (308), a positioning block (310) is slidably connected to the inner side of the support tube (1), a second spring (311) is fixedly connected between the positioning block (310) and the support tube (1), the end of the positioning block (310) is in contact with the threaded sleeve (308) through the positioning groove (309), and the top of the threaded sleeve (308) is in contact with the support tube (1).
6. A tool for preventing debris from falling when dismantling a manhole according to claim 4, characterized in that: The positioning structure (4) comprises a snap-fit block (404), the inner side of the support tube (1) is slidably connected with the snap-fit block (404), a third spring (405) is fixedly connected between the snap-fit block (404) and the support tube (1), a snap-fit groove (407) is provided on the bottom side of the toothed ring (302), and the top end of the snap-fit block (404) is snap-fitted with the toothed ring (302) via the snap-fit groove (407).
7. A tool for preventing debris from falling when dismantling a manhole according to claim 6, characterized in that: The support tube (1) is rotatably connected to a rotary block (402), the top end of the rotary block (402) is fixedly connected to a hanging ear (401), the bottom side of the rotary block (402) is fixedly connected to a protrusion (403), the top side of the locking block (404) is provided with a receiving groove (406), and the protrusion (403) is locked with the locking block (404) through the receiving groove (406).
8. The tool for preventing debris from falling when dismantling a manhole according to claim 1, characterized in that: The collecting structure (5) comprises a collecting bucket (501), the inner side of the supporting tube (1) is a conical structure, the collecting bucket (501) is in contact with the inner side of the supporting tube (1), and two telescopic rods (503) are provided on the collecting bucket (501), and the ends of the two telescopic rods (503) are rotatably connected to lifting rods (502).
9. A tool for preventing debris from falling when dismantling a manhole according to claim 8, characterized in that: A sliding groove (504) is provided on the inner side of the support tube (1), and the telescopic rod (503) is slidably connected to the support tube (1) via the sliding groove (504), and a fourth spring (505) is fixedly connected between the bottom end of the telescopic rod (503) and the support tube (1).