Mechanical pipe breaking and backfilling equipment
By designing a mechanical equipment for pipeline crushing and crushing and backfilling through backward walking, the problem of ground collapse and water inflow risks in the prior art is solved, and a safe and efficient pipeline renewal process is achieved.
Patent Information
- Application Number
- CN202421042272.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The prior art has the risk of ground collapse and water and mud gushing during pipeline crushing and backfilling, resulting in losses of construction personnel and machinery and equipment, and the need to open-cut foundation pits increase construction complexity.
Design a mechanical pipe breaking and backfilling equipment, which uses a backward walking method to break through the shell and rotating cutter plate in the pipe section, and is equipped with a walking mechanism, a conveying mechanism and a pressure gauge to avoid exposure of the palm surface and realize that it is not necessary to be clear. Brokening and backfilling of foundation pits.
It effectively reduces the risks of ground collapse and water and mud gushing, and performs tunnel backfilling simultaneously, reduces the losses of personnel and mechanical equipment, and monitors soil pressure balance through pressure gauge to prevent ground settlement.
Smart Images
Figure CN222288314U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of underground pipeline construction, and in particular to a mechanical pipe breaking and backfilling device. Background Art
[0002] With the continuous advancement of urbanization, old urban pipelines (such as rainwater, sewage, power pipelines, etc.) have become old and broken over the years, or the diameter of the original pipelines is too small to meet the subsequent use needs, and pipeline renewal faces major challenges.
[0003] At present, for operations that require pipe crushing and foundation pit backfilling, most of them adopt open excavation of foundation pits, manual crushing and backfilling. This method will cause the face to be exposed for a long time, with a greater risk of ground collapse and water and mud gushing, causing irreparable losses to construction personnel and mechanical equipment. Utility Model Content
[0004] In order to reduce the risk of pipeline breakage and tunnel backfilling, the present application provides a mechanical pipe breaking and backfilling device.
[0005] The mechanical pipe breaking and backfilling equipment provided in this application adopts the following technical solution:
[0006] A mechanical pipe breaking and backfilling device comprises a shell arranged in a pipe section, the shell comprising a cylindrical side plate and a breast plate located at the end of the side plate, a crushing mechanism for crushing the pipe section is installed on the breast plate, the crushing mechanism comprises a driving member installed on the breast plate and a cutter disc driven to rotate by the driving member, the cutter disc is located outside the pipe section, a walking mechanism and a conveying mechanism are arranged on the shell, a feed port of the conveying mechanism is penetrated through the breast plate, a discharge port of the conveying mechanism is located outside the shell, and a gas injection hole and a mud injection hole are also arranged on the breast plate.
[0007] By adopting the above technical solution, the pipe breaking equipment adopts a backward walking method, moving from one end of the pipe section to the other end, breaking while walking, without the need for open excavation of the foundation pit, avoiding exposure of the heading face, reducing the risk of ground collapse and water and mud gushing, and backfilling the tunnel while breaking, reducing the risk of loss of personnel and mechanical equipment.
[0008] Optionally, a pressure gauge is provided on the chest plate.
[0009] By adopting the above technical solution, the pressure gauge is used to monitor the gas pressure and soil pressure in the tunnel after the pipe is broken, so that the pressure reaches the soil pressure balance to limit the ground settlement.
[0010] Optionally, an observation hole is provided on the chest plate.
[0011] By adopting the above technical solution, the staff can enter the shell and observe through the observation hole whether there is any problem with the cutter disc and perform repairs in time.
[0012] Optionally, the walking mechanism includes a plurality of telescopic parts fixed in the shell and a support part fixed to one end of the telescopic parts away from the chest plate, the telescopic parts and the support part both have telescopic functions, the telescopic direction of the telescopic parts is the same as the length direction of the pipe section, and the telescopic direction of the support part is perpendicular to the telescopic direction of the telescopic parts.
[0013] By adopting the above technical solution, the telescopic member and the supporting member cooperate with each other and circulate back and forth, thereby achieving the purpose of continuous movement of the pipe breaking device.
[0014] Optionally, the telescopic member and the supporting member are both oil cylinders.
[0015] By adopting the above technical solution, the oil cylinder can be easily obtained and has stable performance.
[0016] Optionally, the conveying mechanism is a screw conveyor.
[0017] By adopting the above technical solution, the screw conveyor is easy to obtain materials and has stable performance.
[0018] Optionally, the driving member is a combination structure of a motor and a reducer.
[0019] By adopting the above technical solution, the motor and the reducer are easy to obtain and have stable performance.
[0020] Optionally, the cutter disc includes a support frame connected to the driving member, and a plurality of cutters are mounted around the support frame.
[0021] By adopting the above technical solution, multiple tools work together to improve efficiency.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. The pipe breaking equipment adopts a backward walking mode, moving from one end of the pipe section to the other end, breaking while walking, without the need for open excavation of the foundation pit, avoiding the exposure of the tunnel face, reducing the risk of ground collapse and water and mud gushing, and backfilling the tunnel while breaking, reducing the risk of loss of personnel and mechanical equipment;
[0024] 2. The pressure gauge is used to monitor the gas pressure and soil pressure in the tunnel after the pipe is broken, so that the pressure reaches the soil pressure balance to limit the ground settlement;
[0025] 3. The staff can enter the shell and observe through the observation hole whether there is any problem with the cutter disc and perform repairs in time. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1It is a structural schematic diagram of a mechanical pipe breaking and backfilling device according to an embodiment of the present application.
[0027] Figure 2 It is a schematic diagram of the structure of the cutter disc of an embodiment of the present application.
[0028] Explanation of the reference numerals: 1. pipe joint; 2. shell; 20. side plate; 21. chest plate; 3. crushing mechanism; 30. driving member; 31. cutter disc; 310. support frame; 311. cutter; 4. walking mechanism; 40. telescopic member; 41. support member; 5. conveying mechanism; 6. gas injection hole; 7. mud injection hole; 8. pressure gauge; 9. observation hole. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1 -Attached Figure 2 This application is described in further detail.
[0030] The present application embodiment discloses a mechanical pipe breaking and backfilling device. Figure 1 A mechanical pipe breaking and backfilling device is placed at one end of a pipe segment 1, and the pipe segment 1 is broken by moving backward. The pipe diameter of the pipe segment 1 is generally 2-4m, and the pipe breaking device is selected according to the pipe diameter of the pipe segment 1. The pipe breaking device includes a shell 2, a crushing mechanism 3 for crushing the reinforced concrete pipe segment 1, a walking mechanism 4 for driving the whole device to move forward, and a conveying mechanism 5 for discharging the broken materials.
[0031] Reference Figure 1 and Figure 2 The housing 2 includes a cylindrical side plate 20 and a breast plate 21 disposed at one end of the side plate 20. The crushing mechanism 3 includes a driving member 30 mounted on the breast plate 21 and a cutter disc 31 driven to rotate by the driving member 30. The driving member 30 in this embodiment is a structure in the form of a combination of a motor and a reducer. The cutter disc 31 includes a support frame 310 and a plurality of cutters 311 mounted around the support frame 310. The cutters 311 in this embodiment are commercially available cutter heads that have the performance of crushing concrete and cutting steel bars.
[0032] Reference Figure 1 The walking mechanism 4 includes a plurality of telescopic members 40 mounted around the inside of the side plate 20. The telescopic direction of the telescopic members 40 is the same as the length direction of the pipe segment 1. The telescopic members 40 in this embodiment are telescopic oil cylinders. A support member 41 is vertically mounted at one end of the telescopic member 40 away from the breast plate 21. The support member 41 is located outside the housing 2. The support member 41 in this embodiment is a support oil cylinder. The support member 41 can be retracted and supported on the inner wall of the pipe segment 1, thereby fixing the entire pipe breaking device.
[0033] Reference Figure 1The conveying mechanism 5 in this embodiment is a screw conveyor. The feed port of the conveying mechanism 5 is fixed at the bottom of the breast plate 21 and is connected to the inside of the tunnel. The discharge port of the conveying mechanism 5 extends to the outside of the shell 2. The conveying mechanism 5 transfers the slag crushed by the cutter disc 31 to the inside of the pipe section 1. Transport equipment (such as a mobile rail car and a belt conveyor) can be set in the pipe section 1 to receive the slag and transport it to the outside of the tunnel.
[0034] Reference Figure 1 , a gas injection hole 6 and a mud injection hole 7 are provided on the top of the breast plate 21. The staff can install an air compressor in the shell 2, and introduce high-pressure air into the tunnel after the broken pipe section 1 through the gas injection hole 6 to maintain the pressure balance of the space area and prevent the ground from collapsing. The staff stirs the low-plasticity mud with a mud mixer off-site, extends the mud conveying pipe from the unbroken end of the pipe section 1 into the pipe section 1 and connects it to the mud injection hole 7. The mud is pumped into the tunnel face for filling through the mud conveying pump. At this time, the injection of compressed air in the face can be reduced accordingly, so that the broken space in the tunnel is backfilled with mud.
[0035] Reference Figure 1 A pressure gauge 8 is installed at the bottom of the chest plate 21. The pressure gauge 8 is used to monitor the gas pressure and soil pressure in the tunnel after the pipe is broken, so that the pressure reaches the soil pressure balance to limit the ground settlement. An observation hole 9 is also provided at the top of the chest plate 21. The staff can enter the shell 2 and observe whether there is any problem with the cutter head 31 through the observation hole 9 and perform maintenance in time.
[0036] The implementation principle of a mechanical pipe breaking and backfilling device in an embodiment of the present application is as follows: the pipe breaking device adopts a backward crushing method, and the pipe breaking device is first installed at one end of the pipe segment 1, so that the cutter disc 31 is located outside the pipe segment 1, and the rest of the pipe breaking device is located inside the pipe segment 1. The tunnel entrance where the pipe breaking device is installed is blocked with a concrete or brick wall, thereby enclosing the pipe breaking device in the tunnel, while the other opening of the tunnel remains open.
[0037] When the pipe breaking device is started, the telescopic member 40 is extended first, and then the supporting member 41 is extended and supported on the inner wall of the pipe section 1, thereby fixing the entire pipe breaking device. The driving member 30 drives the cutter head 31 to rotate, and the telescopic member 40 is contracted synchronously. The purpose of mobile crushing is achieved through the cooperation of the rotation of the cutter head 31 and the contraction of the telescopic member 40.
[0038] At the same time, compressed air is injected into the tunnel after the pipe is broken through the gas injection hole 6 to maintain the pressure balance in the space area and prevent the ground from collapsing. After completing a working section (a cycle length), the support member 41 is now in an extended state and against the inner wall of the pipe section 1, and the telescopic member 40 is completely retracted. Then the support member 41 is controlled to shorten so that the support member 41 is suspended in the air. The telescopic member 40 is extended again to push the support member 41 away from the cutter head 31. The support member 41 is extended again and supported on the inner wall of the pipe section 1, thereby completing the re-fixation of the pipe breaking device. The subsequent reciprocating cycle of this operation can move the pipe breaking device.
[0039] After the pipe is broken, the debris falls to the bottom and is taken out to the rear pipe section 1 by the conveying mechanism 5, and then transported to the outside of the tunnel by transportation equipment. After a cycle of crushing is completed, mud is injected into the tunnel through the mud injection hole 7 to backfill the broken space, while reducing the injection of high-pressure air, and monitoring the pressure in the tunnel through the pressure gauge 8 to prevent ground subsidence.
[0040] After the work section is completed, the next work section will be broken and filled, and the cycle will be repeated until the whole tunnel is broken and backfilled. By using this pipe breaking equipment, the tunnel face exposure can be effectively avoided, the risk of ground collapse and water and mud gushing can be reduced, and the tunnel can be backfilled at the same time, reducing the risk of loss of personnel and mechanical equipment.
[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A mechanical pipe breaking and backfilling device, characterized in that: The invention comprises a shell (2) arranged in a pipe section (1), the shell (2) comprising a cylindrical side plate (20) and a breast plate (21) located at the end of the side plate (20), a crushing mechanism (3) for crushing the pipe section (1) is installed on the breast plate (21), the crushing mechanism (3) comprises a driving member (30) installed on the breast plate (21) and a cutter disc (31) driven to rotate by the driving member (30), the cutter disc (31) is located outside the pipe section (1), a walking mechanism (4) and a conveying mechanism (5) are arranged on the shell (2), a feed port of the conveying mechanism (5) is penetrated through the breast plate (21), a discharge port of the conveying mechanism (5) is located outside the shell (2), and a gas injection hole (6) and a mud injection hole (7) are also arranged on the breast plate (21).
2. A mechanical pipe breaking and backfilling device according to claim 1, characterized in that: The chest plate (21) is provided with a pressure gauge (8).
3. The mechanical pipe breaking and backfilling device according to claim 1 is characterized in that: The breast plate (21) is provided with an observation hole (9).
4. The mechanical pipe breaking and backfilling device according to claim 1 is characterized in that: The walking mechanism (4) comprises a plurality of telescopic parts (40) fixed in the shell (2) and a support part (41) fixed to one end of the telescopic parts (40) away from the chest plate (21); the telescopic parts (40) and the support part (41) both have a telescopic function; the telescopic direction of the telescopic parts (40) is the same as the length direction of the pipe section (1); and the telescopic direction of the support part (41) is perpendicular to the telescopic direction of the telescopic parts (40).
5. A mechanical pipe breaking and backfilling device according to claim 4, characterized in that: The telescopic member (40) and the supporting member (41) are both oil cylinders.
6. The mechanical pipe breaking and backfilling device according to claim 1, characterized in that: The conveying mechanism (5) is a screw conveyor.
7. The mechanical pipe breaking and backfilling device according to claim 1, characterized in that: The driving member (30) is a combined structure of a motor and a reducer.
8. The mechanical pipe breaking and backfilling device according to claim 1, characterized in that: The cutter disc (31) comprises a support frame (310) connected to the driving member (30), and a plurality of cutters (311) are mounted around the support frame (310).