In-situ breaking and replacing device for underground plastic disease blow-off pipe
The device, consisting of a guide drill bit and a cutting blade, cuts and enlarges the hole inside the damaged sewage pipe. Combined with a jacking mechanism, the new sewage pipe is installed in situ, which solves the problems of large construction volume and high cost in the existing technology, improves construction efficiency and reduces costs.
Patent Information
- Application Number
- CN202520379704.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing technologies, the replacement of damaged underground plastic sewage pipes requires large-scale earthwork excavation and backfilling, resulting in high construction costs and low efficiency.
A device consisting of a guide reaming drill bit and a cutting blade is used to cut and enlarge the hole inside the damaged sewage pipe by traction with a steel wire rope, forming an installation channel for the new sewage pipe. The new sewage pipe is then installed section by section using a jacking mechanism, achieving in-situ replacement.
This method allows for the direct replacement of damaged sewage pipes without breaking ground, eliminating the need for excavation and backfilling, thus improving construction efficiency, reducing costs, and making it applicable to the construction of damaged sewage pipes of different sizes and specifications.
Smart Images
Figure CN223853481U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pipeline maintenance technical field especially relates to a kind of in-situ breaking replacement device of underground plastic disease sewage pipe. BACKGROUND
[0002] As an important part of urban infrastructure, the health of underground plastic sewage pipeline is directly related to the normal operation of urban drainage system. However, with the increase of service life, construction quality, geological conditions and other factors, plastic sewage pipeline often appears diseases such as blockage, rupture and deformation, which seriously affects the drainage efficiency and even leads to urban waterlogging.
[0003] Currently, the replacement method for underground plastic disease sewage pipe mainly includes the following steps: digging the soil around the disease sewage pipe by artificial, taking out the disease sewage pipe, replacing the new sewage pipe, and backfilling the soil.
[0004] However, the above-mentioned prior art has the following problems: the construction amount is large, the cost is high, and the replacement efficiency is low. INVENTION CONTENTS
[0005] In view of the above problems, the utility model aims to provide an in-situ breaking replacement device for underground plastic disease sewage pipe, which can directly install a new sewage pipe in-situ to replace the disease sewage pipe without breaking the soil and taking out the disease sewage pipe and limiting the construction space, thereby saving the earth excavation and earth backfilling processes and improving the construction efficiency.
[0006] The utility model realizes the following technical scheme.
[0007] An in-situ breaking replacement device for underground plastic disease sewage pipe includes a winch, a steel wire rope connected to the drum of the winch at one end and connected to a guide drill bit at the other end, characterized in that it further comprises a guide reaming drill bit, a cutting knife, a middle connection occupying head, a pipeline adapter for inserting a new sewage pipe, and a pushing mechanism for pushing the new sewage pipe. The guide reaming drill bit is a conical structure, which is assembled by a guide drill bit and a plurality of reaming drill bodies in sequence. The top surface diameter of the reaming drill body at the tail is smaller than the outer diameter of the disease sewage pipe, and the bottom surface diameter is larger than the outer diameter of the disease sewage pipe. The cutting knife is detachably arranged on the side of any reaming drill body to cut the disease sewage pipe. The middle connection occupying head is a cylindrical structure, and its diameter is the same as the bottom surface diameter of the reaming drill body at the tail. The one end of the middle connection occupying head is coaxially detachably connected to the reaming drill body at the tail, and the other end is coaxially detachably connected to the pipeline adapter.
[0008] Preferably, 3-4 cutting blades are evenly arranged along the periphery of the reaming drill body, and the cutting edge direction of the cutting blade is the same as the length direction of the guide reaming drill bit.
[0009] Preferably, the reaming drill bit has an internal cavity.
[0010] Preferably, the cutting blade includes a cutting edge and connecting pieces disposed on both sides of the cutting edge; the side walls of several of the reaming drill bodies are provided with grooves for inserting the cutting edge; the cutting blade is inserted into the grooves through the cutting edge and is detachably fixed to the periphery of the reaming drill body by means of the connecting pieces and bolts.
[0011] Preferably, the guide drill bit and several reaming drill bodies are assembled in a detachable manner via threads; one end of the central occupant head is detachably connected to the tail of the guide reaming drill bit via threads, and the other end is detachably connected to the pipe connector via threads.
[0012] Preferably, the length of the guide drill bit and the reaming drill body is 20-40 cm.
[0013] Preferably, the jacking mechanism includes a support base plate, a hydraulic cylinder, and a jacking plate connected to the working end of the hydraulic cylinder for jacking the newly connected sewage pipe.
[0014] Preferably, the bottom diameter of the reaming drill bit at the tail end is 3-10 cm larger than the outer diameter of the sewage pipe in the affected area.
[0015] Preferably, both the newly connected sewage pipe and the damaged sewage pipe are plastic pipes.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1) This utility model has a simple structure and ingenious design. It uses a winch to drive a wire rope to guide the reaming drill bit through the damaged sewage pipe along the pipe's direction. This allows the damaged sewage pipe to be cut and broken in situ and the hole to be enlarged to form an installation channel for the new sewage pipe. At the same time, a jacking mechanism is used to push the new sewage pipe section by section to follow the tail of the reaming drill bit in the installation channel, so as to realize the in-situ installation of the new sewage pipe. In this way, the new sewage pipe can be directly installed in situ to replace the damaged sewage pipe without breaking the soil to remove it. This can save the earthwork excavation and backfilling process, resulting in higher construction efficiency and significantly reduced construction costs.
[0018] 2) the utility model discloses, and the guide reaming drill bit is assembled in proper order by a guide drill bit and a plurality of reaming drill body, and cutting knife can be detachably arranged at the circumferential side of any one reaming drill body, thereby can be assembled and install cutting knife through guide drill bit and different number of reaming drill body, and the overall length of guide reaming drill bit is flexibly adjusted or its tail diameter is adjusted to be suitable for the construction of the disease sewage pipe of different size specifications, and for the construction of the pipeline between adjacent rainwater and sewage well of limited construction space, guide drill bit and reaming drill body can be hoisted and sent to rainwater and sewage well in proper order in block, and are installed and sent into the disease sewage pipe piece by piece, and the use flexibility and practicality of the utility model are greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.
[0020] Figure 1 It is the structural schematic diagram of the utility model;
[0021] Figure 2 It is the structural schematic diagram of guide reaming drill bit;
[0022] Figure 3 It is Figure 2 It is the sectional view of A-A in the utility model;
[0023] Figure 4 It is the front view of the utility model;
[0024] Figure 5 It is the three-dimensional structural schematic diagram of reaming drill body;
[0025] Figure 6 It is the structural schematic diagram of the utility model after installing new sewage pipe;
[0026] Figure 7 It is the structural schematic diagram of guide reaming drill bit assembled in proper order by a guide drill bit and two reaming drill bodies;
[0027] Figure 8 It is the schematic diagram of guide reaming drill bit hoisted and sent in proper order;
[0028] Figure 9 It is the schematic diagram of the utility model pulling and jacking new sewage pipe;
[0029] The meanings of the respective indications in the above figures are as follows: winch 1, pushing mechanism 2, support base plate 201, hydraulic cylinder 202, pushing plate 203, rainwater and sewage well 3, steel wire rope 4, guide reamer 5, guide drill bit 501, reamer body 502, intermediate joint occupying head 6, pipeline joint head 7, cutting knife 8, newly connected sewage pipe 9, diseased sewage pipe 10. DETAILED DESCRIPTION
[0030] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model and cannot be understood as a limitation of the utility model.
[0031] The embodiment provides an in-situ breaking and replacing device for an underground plastic diseased sewage pipe, please refer to Figures 1 to 4 , which comprises: a winch 1, a steel wire rope 4 connected at one end with a winding drum of the winch 1 and at the other end with a guide drill bit 501, a guide reamer 5, a cutting knife 8, an intermediate joint occupying head 6, a pipeline joint head 7 for inserting a newly connected sewage pipe 9, and a pushing mechanism 2 for pushing the newly connected sewage pipe 9; wherein the guide reamer 5 is in the form of a whole conical body, which is assembled by a guide drill bit 501 and a plurality of reamer bodies 502 in sequence and detachable; the top surface diameter of the reamer body 502 at the tail is smaller than the outer diameter of the diseased sewage pipe, and the bottom surface diameter is larger than the outer diameter of the diseased sewage pipe; the cutting knife 8 is detachably arranged on the circumferential side of any one of the reamer bodies 502 for cutting the diseased sewage pipe 10; the intermediate joint occupying head 6 is in the form of a cylinder, the diameter of which is the same as the bottom surface diameter of the reamer body 502 at the tail, and the intermediate joint occupying head 6 is coaxially and detachably connected at one end with the reamer body 502 at the tail and at the other end with the pipeline joint head 7; in the above structure, the guide reamer 5 is in the form of a whole conical body, so that the guide reamer 5 can easily pass through the diseased sewage pipe 10 which is blocked or deformed; please refer to Figure 8 , generally, the construction space in the rainwater and sewage well 3 is limited, so the guide reamer 5 is difficult to be hoisted as a whole into the rainwater and sewage well 3 and smoothly sent into the diseased sewage pipe 10, and the guide reamer 5 is assembled by a guide drill bit 501 and a plurality of reamer bodies 502 in sequence and detachable, so the guide drill bit 501 and the plurality of reamer bodies 502 can be hoisted and sent into the rainwater and sewage well 3 in blocks in sequence and installed and sent into the diseased sewage pipe 10 in blocks; at the same time, please refer to Figure 6 and Figure 7Since the cutting knife 8 is detachably arranged on the circumferential side of any one of the reamers 502, the guide reamer head 5 can be assembled with different numbers of the reamers 502, and the cutting knife 8 is arranged on the last reamer 502 or the second last reamer 502, so that the overall length of the guide reamer head 5 or the tail diameter of the guide reamer head 5 is flexibly adjusted to adapt to different specifications of the disease drainage pipe 10, and the intermediate occupying head 6 and the pipe adapter head 7 should be simultaneously arranged in different sizes for use; generally, the guide reamer head 5 is assembled by one guide drill bit 501 and 1-5 reamers 502 in sequence; in order to achieve the reaming effect, the top diameter and the bottom diameter of the reamer at the tail are respectively smaller and larger than the outer diameter of the disease drainage pipe, when the disease drainage pipe 10 abuts against the reamer 502 at the tail of the guide reamer head 5, the disease drainage pipe 10 will be cut by the cutting knife 8 first, and then be extruded into the circumferential soil by the reamer 502 at the tail to realize the in-situ reaming of the pipe, and then the installation channel of the new connection drainage pipe 9 is formed; the intermediate occupying head 6 is a cylindrical structure, and the diameter of the intermediate occupying head 6 is the same as the bottom diameter of the reamer 502 at the tail, so as to be beneficial to maintaining the shape of the installation channel formed by the reaming; in the working process, one end of the new connection drainage pipe 9 is sleeved and fixed on the pipe adapter head 7, and the other end abuts against the jacking mechanism 2, the winch 1 drives the guide reamer head 5 to move along the pipeline in the disease drainage pipe 10 through the steel wire rope 6, so as to cut and break the disease drainage pipe 10 in-situ and form the installation channel of the new connection drainage pipe 9, the jacking mechanism 2 drives the new connection drainage pipe 9 to move in the installation channel following the guide reamer head 5 at the tail, and under the driving of the jacking mechanism 2 and the pipe adapter head 7, the new connection drainage pipe 9 slowly enters the installation channel formed by the reaming, so as to realize the in-situ installation of the new connection drainage pipe 9 replacing the disease drainage pipe 10;
[0032] Based on the above structure, the working principle or construction method of the utility model is as follows: the utility model is usually applicable to the replacement of the disease drainage pipe 10 between the adjacent rainwater and sewage wells 3, or the situation that the operation space of the winch 1 and the jacking mechanism 2 exists at both ends of the disease drainage pipe 10, and the pipeline of the disease drainage pipe 10 is linear or has small curvature; taking the replacement of the disease drainage pipe 10 between the adjacent rainwater and sewage wells 3 as an example, the specific construction steps of the utility model for in-situ breaking and replacing the underground plastic disease drainage pipe are as follows:
[0033] S1, please refer to Figure 9 The winch 1 is fixedly installed in the upstream rainwater and sewage well 3, one end of the steel wire rope 4 is connected with the winding drum of the winch 1, and the other end can be tied with a floating wood to float and pass through to the downstream rainwater and sewage well 3 along the water flow;
[0034] S2, hoist the guide drill bit 501 to the downstream rainwater and sewage well 3, connect the head of the guide drill bit 501 with the steel wire rope 4, start the winch 1 to slowly pull the guide drill bit 501, until the guide drill bit 501 just enters the disease sewage pipe 10 port, stop the winch; then hoist the to-be-spliced reaming body 502 to the downstream rainwater and sewage well 3, connect the reaming body 502 with the guide drill bit 501, start the winch 1 to slowly pull the spliced reaming body 502, until the spliced reaming body 502 just enters the disease sewage pipe 10 port, stop the winch; repeat the above steps, hoist, splice and pull the remaining reaming bodies 502 and the intermediate occupying head 6 block by block, then connect the pipeline adapter head 7 at the tail of the reaming body 502, and fix and install the pushing mechanism 2 against the side wall of the rainwater and sewage well 3 away from the guide reaming bit 5, so as to ensure that the pushing mechanism 2 has stable stress conditions, and the working end of the pushing mechanism 2 is aligned with the tail of the pipeline adapter head 7;
[0035] S3, one end of a new sewage pipe 9 with appropriate length is sleeved and fixed on the pipeline adapter head 7, and the other end is abutted with the working end of the pushing mechanism 2, so that the preliminary preparation of the device of the utility model is completed;
[0036] S4, start the winch 1, slowly pull the guide reaming bit 5 in the disease sewage pipe 10 along the pipeline direction through the steel wire rope 6, and at the same time, the pushing mechanism 2 pushes the new sewage pipe 9 to move in the installation channel following the tail of the guide reaming bit 5; during the process, every time a new sewage pipe 9 is pulled and jacked in, the machine needs to be stopped to install the next new sewage pipe 9 between the tail of the last new sewage pipe 9 and the pushing mechanism 2, and then the next new sewage pipe 9 is pulled and jacked in according to the above method, until the replacement construction of the new sewage pipe 9 is completed for the whole pipeline of the disease sewage pipe 10;
[0037] S5, after the construction is completed, the guide reaming bit 5, the winch 1, the pushing mechanism 2 and the like are sequentially disassembled and taken out from the rainwater and sewage well 3.
[0038] In order to reduce the weight of the reaming body 502, so as to facilitate the underground handling and assembly operation, the reaming body 502 has a cavity inside; in addition, in order to facilitate the size of the guide drill bit and the reaming body to be handled and assembled underground, the length of the guide drill bit 501 and the reaming body 502 should be appropriate, and the length of the two is usually set to 20-40 cm; and the surfaces of the guide drill bit 501 and the reaming body 502 are smooth surfaces, so as to reduce the friction between them and the pipeline or the soil around the pipeline.
[0039] Further, in a preferred embodiment, please refer to Figures 2 to 5The cutting knife 8 comprises a cutting edge 801 and connecting pieces 802 arranged on both sides of the cutting edge; the sidewalls of the reamer body 502 are provided with knife grooves 5021 for inserting the cutting edge 801; the cutting knife 8 is inserted into the knife grooves 5021 through the cutting edge 801 and is detachably fixed and installed on the sidewall of the reamer body 502 by cooperating with the bolts through the connecting pieces 802.
[0040] In order to facilitate the assembly of the pilot drill bit 501 and the reamer body 502 and ensure the connection strength, further, in a preferred embodiment, the pilot drill bit 501 and the reamer bodies 502 are threadedly connected and can be detachably connected in sequence; specifically, as shown in Figure 2 and Figure 5 , the head and the tail of the pilot drill bit 501 and the reamer body 502 have adaptive threaded connection structures; similarly, in order to facilitate the sequential connection of the pilot reamer bit, the intermediate occupying head and the pipeline adapter head, one end of the intermediate occupying head 6 is threadedly connected and detachable with the tail of the pilot reamer bit 5, and the other end is threadedly connected and detachable with the pipeline adapter head 7.
[0041] In order to ensure the cutting effect of the cutting knife 8 on the disease drain pipe 10 and avoid excessive resistance caused by the cutting knife 8, further, in a preferred embodiment, the cutting knife 8 is evenly arranged at 3-4 along the sidewall of the reamer body 502, and the direction of the cutting edge of the cutting knife 8 is the same as the length direction of the pilot reamer bit 5.
[0042] Further, in a preferred embodiment, the pushing mechanism 2 comprises a supporting bottom plate 201, a hydraulic cylinder 202, and a pushing plate 203 connected with the working end of the hydraulic cylinder 202 for pushing the new drain pipe 9.
[0043] In order to ensure that the installation channel formed by the in-situ reaming has a proper size, further, in a preferred embodiment, the diameter of the tail of the pilot reamer bit 5 is 3-10 cm larger than the diameter of the disease drain pipe 10.
[0044] Further, in a preferred embodiment, the new drain pipe 9 and the disease drain pipe 10 are both plastic pipes.
[0045] The above disclosure is only a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, and those skilled in the art can understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.
Claims
1. An in-situ breaking and replacing device for a plastic underground disease drain, comprising a winch, a steel wire rope with one end connected to a winding drum of the winch and the other end connected to a guide drill bit, characterized in that, Also include: A guide reaming drill head, a cutting knife, a middle connection placeholder head, a pipeline adapter for inserting a new connection sewage pipe, and a pushing mechanism for pushing a new connection sewage pipe; The guide reaming drill head is a whole conical structure, which is assembled by a guide drill head and a plurality of reaming drill bodies in sequence; the top surface diameter and the bottom surface diameter of the reaming drill body at the tail are respectively smaller and larger than the outer diameter of the disease sewage pipe; the cutting knife is detachably arranged on the side of any reaming drill body, for cutting the disease sewage pipe; the middle connection placeholder head is a cylindrical structure, the diameter of which is the same as the bottom surface diameter of the reaming drill body at the tail, and one end of the middle connection placeholder head is coaxially and detachably connected with the reaming drill body at the tail, and the other end is coaxially and detachably connected with the pipeline adapter.
2. An in situ breaking and replacing device for underground plastic disease drain according to claim 1, characterized in that, The cutting knife is evenly arranged on the side of the reaming drill body, and the direction of the cutting edge of the cutting knife is the same as the length direction of the guide reaming drill head.
3. An in situ breaking and replacing device for an underground plastic disease drain according to claim 1, characterized in that, The reaming drill body has a cavity inside.
4. An in situ breaking and replacing device for an underground plastic disease drain according to claim 1, characterized in that, The cutting knife includes a cutting edge and connecting pieces arranged on both sides of the cutting edge; the side walls of the reaming drill bodies are provided with knife grooves for inserting the cutting edge; the cutting knife is inserted into the knife grooves through the cutting edge, and is detachably fixed and installed on the side of the reaming drill body by the connecting pieces and bolts.
5. An in situ breaking and replacing device for an underground plastic disease drain according to claim 1, characterized in that, The guide drill head and the plurality of reaming drill bodies are assembled in sequence by threads; one end of the middle connection placeholder head is detachably connected with the tail of the guide reaming drill head by threads, and the other end is detachably connected with the pipeline adapter by threads.
6. An in situ breaking and replacing device for an underground plastic disease drain according to claim 1, characterized in that, The length of the guide drill head and the reaming drill body is 20-40 cm.
7. An in situ breaking and replacing device for an underground plastic disease drain according to claim 1, characterized in that, The pushing mechanism includes a support bottom plate, a hydraulic cylinder, and a pushing plate connected with the working end of the hydraulic cylinder for pushing the new connection sewage pipe.
8. An in situ breaking and replacing device for an underground plastic disease drain according to claim 1, characterized in that, The bottom surface diameter of the reaming drill body at the tail is 3-10 cm larger than the outer diameter of the disease sewage pipe.
9. An in situ breaking and replacing device for an underground plastic disease drain according to claim 1, characterized in that, The new connection sewage pipe and the disease sewage pipe are both plastic pipes.